gtk/auto/

text_view.rs

// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::{
    Adjustment, Align, Buildable, Container, DeleteType, InputHints, InputPurpose, Justification,
    MovementStep, ResizeMode, ScrollStep, Scrollable, ScrollablePolicy, TextAttributes, TextBuffer,
    TextChildAnchor, TextExtendSelection, TextIter, TextMark, TextWindowType, Widget, WrapMode,
    ffi,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// You may wish to begin by reading the
    /// [text widget conceptual overview](TextWidget.html)
    /// which gives an overview of all the objects and data
    /// types related to the text widget and how they work together.
    ///
    /// # CSS nodes
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// textview.view
    /// ├── border.top
    /// ├── border.left
    /// ├── text
    /// │   ╰── [selection]
    /// ├── border.right
    /// ├── border.bottom
    /// ╰── [window.popup]
    /// ```
    ///
    /// GtkTextView has a main css node with name textview and style class .view,
    /// and subnodes for each of the border windows, and the main text area,
    /// with names border and text, respectively. The border nodes each get
    /// one of the style classes .left, .right, .top or .bottom.
    ///
    /// A node representing the selection will appear below the text node.
    ///
    /// If a context menu is opened, the window node will appear as a subnode
    /// of the main node.
    ///
    /// ## Properties
    ///
    ///
    /// #### `accepts-tab`
    ///  Readable | Writable
    ///
    ///
    /// #### `bottom-margin`
    ///  The bottom margin for text in the text view.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-bottom`][struct@crate::Widget#margin-bottom].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `buffer`
    ///  Readable | Writable
    ///
    ///
    /// #### `cursor-visible`
    ///  Readable | Writable
    ///
    ///
    /// #### `editable`
    ///  Readable | Writable
    ///
    ///
    /// #### `im-module`
    ///  Which IM (input method) module should be used for this text_view.
    /// See [`IMContext`][crate::IMContext].
    ///
    /// Setting this to a non-[`None`] value overrides the
    /// system-wide IM module setting. See the GtkSettings
    /// [`gtk-im-module`][struct@crate::Settings#gtk-im-module] property.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `indent`
    ///  Readable | Writable
    ///
    ///
    /// #### `input-hints`
    ///  Additional hints (beyond [`input-purpose`][struct@crate::TextView#input-purpose]) that
    /// allow input methods to fine-tune their behaviour.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `input-purpose`
    ///  The purpose of this text field.
    ///
    /// This property can be used by on-screen keyboards and other input
    /// methods to adjust their behaviour.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `justification`
    ///  Readable | Writable
    ///
    ///
    /// #### `left-margin`
    ///  The default left margin for text in the text view.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-left`][struct@crate::Widget#margin-left].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `monospace`
    ///  Readable | Writable
    ///
    ///
    /// #### `overwrite`
    ///  Readable | Writable
    ///
    ///
    /// #### `pixels-above-lines`
    ///  Readable | Writable
    ///
    ///
    /// #### `pixels-below-lines`
    ///  Readable | Writable
    ///
    ///
    /// #### `pixels-inside-wrap`
    ///  Readable | Writable
    ///
    ///
    /// #### `populate-all`
    ///  If :populate-all is [`true`], the [`populate-popup`][struct@crate::TextView#populate-popup]
    /// signal is also emitted for touch popups.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `right-margin`
    ///  The default right margin for text in the text view.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-right`][struct@crate::Widget#margin-right].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tabs`
    ///  Readable | Writable
    ///
    ///
    /// #### `top-margin`
    ///  The top margin for text in the text view.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-top`][struct@crate::Widget#margin-top].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `wrap-mode`
    ///  Readable | Writable
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `border-width`
    ///  Readable | Writable
    ///
    ///
    /// #### `child`
    ///  Writable
    ///
    ///
    /// #### `resize-mode`
    ///  Readable | Writable
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `app-paintable`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `composite-child`
    ///  Readable
    ///
    ///
    /// #### `double-buffered`
    ///  Whether the widget is double buffered.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `events`
    ///  Readable | Writable
    ///
    ///
    /// #### `expand`
    ///  Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `focus-on-click`
    ///  Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] on `widget`.
    /// A value of [`true`] indicates that `widget` can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to determine
    /// whether it will provide a tooltip or not.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `height-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `is-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `margin`
    ///  Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-bottom`
    ///  Margin on bottom side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-end`
    ///  Margin on end of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-left`
    ///  Margin on left side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-right`
    ///  Margin on right side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-start`
    ///  Margin on start of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-top`
    ///  Margin on top side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `name`
    ///  Readable | Writable
    ///
    ///
    /// #### `no-show-all`
    ///  Readable | Writable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `parent`
    ///  Readable | Writable
    ///
    ///
    /// #### `receives-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget. See [`WidgetExt::scale_factor()`][crate::prelude::WidgetExt::scale_factor()] for
    /// more details about widget scaling.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Readable | Writable
    ///
    ///
    /// #### `style`
    ///  The style of the widget, which contains information about how it will look (colors, etc).
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-markup`
    ///  Sets the text of tooltip to be the given string, which is marked up
    /// with the [Pango text markup language][PangoMarkupFormat].
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-text`
    ///  Sets the text of tooltip to be the given string.
    ///
    /// Also see [`Tooltip::set_text()`][crate::Tooltip::set_text()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `valign`
    ///  How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `visible`
    ///  Readable | Writable
    ///
    ///
    /// #### `width-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `window`
    ///  The widget's window if it is realized, [`None`] otherwise.
    ///
    /// Readable
    /// </details>
    /// <details><summary><h4>Scrollable</h4></summary>
    ///
    ///
    /// #### `hadjustment`
    ///  Horizontal [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is
    /// shared between the scrollable widget and its parent.
    ///
    /// Readable | Writable | Construct
    ///
    ///
    /// #### `hscroll-policy`
    ///  Determines whether horizontal scrolling should start once the scrollable
    /// widget is allocated less than its minimum width or less than its natural width.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vadjustment`
    ///  Verical [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is shared
    /// between the scrollable widget and its parent.
    ///
    /// Readable | Writable | Construct
    ///
    ///
    /// #### `vscroll-policy`
    ///  Determines whether vertical scrolling should start once the scrollable
    /// widget is allocated less than its minimum height or less than its natural height.
    ///
    /// Readable | Writable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `backspace`
    ///  The ::backspace signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user asks for it.
    ///
    /// The default bindings for this signal are
    /// Backspace and Shift-Backspace.
    ///
    /// Action
    ///
    ///
    /// #### `copy-clipboard`
    ///  The ::copy-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to copy the selection to the clipboard.
    ///
    /// The default bindings for this signal are
    /// Ctrl-c and Ctrl-Insert.
    ///
    /// Action
    ///
    ///
    /// #### `cut-clipboard`
    ///  The ::cut-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to cut the selection to the clipboard.
    ///
    /// The default bindings for this signal are
    /// Ctrl-x and Shift-Delete.
    ///
    /// Action
    ///
    ///
    /// #### `delete-from-cursor`
    ///  The ::delete-from-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a text deletion.
    ///
    /// If the `type_` is [`DeleteType::Chars`][crate::DeleteType::Chars], GTK+ deletes the selection
    /// if there is one, otherwise it deletes the requested number
    /// of characters.
    ///
    /// The default bindings for this signal are
    /// Delete for deleting a character, Ctrl-Delete for
    /// deleting a word and Ctrl-Backspace for deleting a word
    /// backwords.
    ///
    /// Action
    ///
    ///
    /// #### `extend-selection`
    ///  The ::extend-selection signal is emitted when the selection needs to be
    /// extended at `location`.
    ///
    ///
    ///
    ///
    /// #### `insert-at-cursor`
    ///  The ::insert-at-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates the insertion of a
    /// fixed string at the cursor.
    ///
    /// This signal has no default bindings.
    ///
    /// Action
    ///
    ///
    /// #### `insert-emoji`
    ///  The ::insert-emoji signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to present the Emoji chooser for the `text_view`.
    ///
    /// The default bindings for this signal are Ctrl-. and Ctrl-;
    ///
    /// Action
    ///
    ///
    /// #### `move-cursor`
    ///  The ::move-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a cursor movement.
    /// If the cursor is not visible in `text_view`, this signal causes
    /// the viewport to be moved instead.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control the cursor
    /// programmatically.
    ///
    /// The default bindings for this signal come in two variants,
    /// the variant with the Shift modifier extends the selection,
    /// the variant without the Shift modifer does not.
    /// There are too many key combinations to list them all here.
    /// - Arrow keys move by individual characters/lines
    /// - Ctrl-arrow key combinations move by words/paragraphs
    /// - Home/End keys move to the ends of the buffer
    /// - PageUp/PageDown keys move vertically by pages
    /// - Ctrl-PageUp/PageDown keys move horizontally by pages
    ///
    /// Action
    ///
    ///
    /// #### `move-viewport`
    ///  The ::move-viewport signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which can be bound to key combinations to allow the user
    /// to move the viewport, i.e. change what part of the text view
    /// is visible in a containing scrolled window.
    ///
    /// There are no default bindings for this signal.
    ///
    /// Action
    ///
    ///
    /// #### `paste-clipboard`
    ///  The ::paste-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to paste the contents of the clipboard
    /// into the text view.
    ///
    /// The default bindings for this signal are
    /// Ctrl-v and Shift-Insert.
    ///
    /// Action
    ///
    ///
    /// #### `populate-popup`
    ///  The ::populate-popup signal gets emitted before showing the
    /// context menu of the text view.
    ///
    /// If you need to add items to the context menu, connect
    /// to this signal and append your items to the `popup`, which
    /// will be a [`Menu`][crate::Menu] in this case.
    ///
    /// If [`populate-all`][struct@crate::TextView#populate-all] is [`true`], this signal will
    /// also be emitted to populate touch popups. In this case,
    /// `popup` will be a different container, e.g. a [`Toolbar`][crate::Toolbar].
    ///
    /// The signal handler should not make assumptions about the
    /// type of `widget`, but check whether `popup` is a [`Menu`][crate::Menu]
    /// or [`Toolbar`][crate::Toolbar] or another kind of container.
    ///
    ///
    ///
    ///
    /// #### `preedit-changed`
    ///  If an input method is used, the typed text will not immediately
    /// be committed to the buffer. So if you are interested in the text,
    /// connect to this signal.
    ///
    /// This signal is only emitted if the text at the given position
    /// is actually editable.
    ///
    /// Action
    ///
    ///
    /// #### `select-all`
    ///  The ::select-all signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to select or unselect the complete
    /// contents of the text view.
    ///
    /// The default bindings for this signal are Ctrl-a and Ctrl-/
    /// for selecting and Shift-Ctrl-a and Ctrl-\ for unselecting.
    ///
    /// Action
    ///
    ///
    /// #### `set-anchor`
    ///  The ::set-anchor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates setting the "anchor"
    /// mark. The "anchor" mark gets placed at the same position as the
    /// "insert" mark.
    ///
    /// This signal has no default bindings.
    ///
    /// Action
    ///
    ///
    /// #### `toggle-cursor-visible`
    ///  The ::toggle-cursor-visible signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to toggle the [`cursor-visible`][struct@crate::TextView#cursor-visible]
    /// property.
    ///
    /// The default binding for this signal is F7.
    ///
    /// Action
    ///
    ///
    /// #### `toggle-overwrite`
    ///  The ::toggle-overwrite signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to toggle the overwrite mode of the text view.
    ///
    /// The default bindings for this signal is Insert.
    ///
    /// Action
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `add`
    ///
    ///
    ///
    /// #### `check-resize`
    ///
    ///
    ///
    /// #### `remove`
    ///
    ///
    ///
    /// #### `set-focus-child`
    ///
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `accel-closures-changed`
    ///
    ///
    ///
    /// #### `button-press-event`
    ///  The ::button-press-event signal will be emitted when a button
    /// (typically from a mouse) is pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_PRESS_MASK`][crate::gdk::EventMask::BUTTON_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `button-release-event`
    ///  The ::button-release-event signal will be emitted when a button
    /// (typically from a mouse) is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_RELEASE_MASK`][crate::gdk::EventMask::BUTTON_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `can-activate-accel`
    ///  Determines whether an accelerator that activates the signal
    /// identified by `signal_id` can currently be activated.
    /// This signal is present to allow applications and derived
    /// widgets to override the default [`Widget`][crate::Widget] handling
    /// for determining whether an accelerator can be activated.
    ///
    ///
    ///
    ///
    /// #### `child-notify`
    ///  The ::child-notify signal is emitted for each
    /// [child property][child-properties] that has
    /// changed on an object. The signal's detail holds the property name.
    ///
    /// Detailed
    ///
    ///
    /// #### `composited-changed`
    ///  The ::composited-changed signal is emitted when the composited
    /// status of `widgets` screen changes.
    /// See [`Screen::is_composited()`][crate::gdk::Screen::is_composited()].
    ///
    /// Action
    ///
    ///
    /// #### `configure-event`
    ///  The ::configure-event signal will be emitted when the size, position or
    /// stacking of the `widget`'s window has changed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `damage-event`
    ///  Emitted when a redirected window belonging to `widget` gets drawn into.
    /// The region/area members of the event shows what area of the redirected
    /// drawable was drawn into.
    ///
    ///
    ///
    ///
    /// #### `delete-event`
    ///  The ::delete-event signal is emitted if a user requests that
    /// a toplevel window is closed. The default handler for this signal
    /// destroys the window. Connecting [`WidgetExtManual::hide_on_delete()`][crate::prelude::WidgetExtManual::hide_on_delete()] to
    /// this signal will cause the window to be hidden instead, so that
    /// it can later be shown again without reconstructing it.
    ///
    ///
    ///
    ///
    /// #### `destroy`
    ///  Signals that all holders of a reference to the widget should release
    /// the reference that they hold. May result in finalization of the widget
    /// if all references are released.
    ///
    /// This signal is not suitable for saving widget state.
    ///
    ///
    ///
    ///
    /// #### `destroy-event`
    ///  The ::destroy-event signal is emitted when a [`gdk::Window`][crate::gdk::Window] is destroyed.
    /// You rarely get this signal, because most widgets disconnect themselves
    /// from their window before they destroy it, so no widget owns the
    /// window at destroy time.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  The ::direction-changed signal is emitted when the text direction
    /// of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `drag-begin`
    ///  The ::drag-begin signal is emitted on the drag source when a drag is
    /// started. A typical reason to connect to this signal is to set up a
    /// custom drag icon with e.g. [`WidgetExt::drag_source_set_icon_pixbuf()`][crate::prelude::WidgetExt::drag_source_set_icon_pixbuf()].
    ///
    /// Note that some widgets set up a drag icon in the default handler of
    /// this signal, so you may have to use `g_signal_connect_after()` to
    /// override what the default handler did.
    ///
    ///
    ///
    ///
    /// #### `drag-data-delete`
    ///  The ::drag-data-delete signal is emitted on the drag source when a drag
    /// with the action [`gdk::DragAction::MOVE`][crate::gdk::DragAction::MOVE] is successfully completed. The signal
    /// handler is responsible for deleting the data that has been dropped. What
    /// "delete" means depends on the context of the drag operation.
    ///
    ///
    ///
    ///
    /// #### `drag-data-get`
    ///  The ::drag-data-get signal is emitted on the drag source when the drop
    /// site requests the data which is dragged. It is the responsibility of
    /// the signal handler to fill `data` with the data in the format which
    /// is indicated by `info`. See [`SelectionData::set()`][crate::SelectionData::set()] and
    /// [`SelectionData::set_text()`][crate::SelectionData::set_text()].
    ///
    ///
    ///
    ///
    /// #### `drag-data-received`
    ///  The ::drag-data-received signal is emitted on the drop site when the
    /// dragged data has been received. If the data was received in order to
    /// determine whether the drop will be accepted, the handler is expected
    /// to call `gdk_drag_status()` and not finish the drag.
    /// If the data was received in response to a [`drag-drop`][struct@crate::Widget#drag-drop] signal
    /// (and this is the last target to be received), the handler for this
    /// signal is expected to process the received data and then call
    /// `gtk_drag_finish()`, setting the `success` parameter depending on
    /// whether the data was processed successfully.
    ///
    /// Applications must create some means to determine why the signal was emitted
    /// and therefore whether to call `gdk_drag_status()` or `gtk_drag_finish()`.
    ///
    /// The handler may inspect the selected action with
    /// [`DragContext::selected_action()`][crate::gdk::DragContext::selected_action()] before calling
    /// `gtk_drag_finish()`, e.g. to implement [`gdk::DragAction::ASK`][crate::gdk::DragAction::ASK] as
    /// shown in the following example:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// void
    /// drag_data_received (GtkWidget          *widget,
    ///                     GdkDragContext     *context,
    ///                     gint                x,
    ///                     gint                y,
    ///                     GtkSelectionData   *data,
    ///                     guint               info,
    ///                     guint               time)
    /// {
    ///   if ((data->length >= 0) && (data->format == 8))
    ///     {
    ///       GdkDragAction action;
    ///
    ///       // handle data here
    ///
    ///       action = gdk_drag_context_get_selected_action (context);
    ///       if (action == GDK_ACTION_ASK)
    ///         {
    ///           GtkWidget *dialog;
    ///           gint response;
    ///
    ///           dialog = gtk_message_dialog_new (NULL,
    ///                                            GTK_DIALOG_MODAL |
    ///                                            GTK_DIALOG_DESTROY_WITH_PARENT,
    ///                                            GTK_MESSAGE_INFO,
    ///                                            GTK_BUTTONS_YES_NO,
    ///                                            "Move the data ?\n");
    ///           response = gtk_dialog_run (GTK_DIALOG (dialog));
    ///           gtk_widget_destroy (dialog);
    ///
    ///           if (response == GTK_RESPONSE_YES)
    ///             action = GDK_ACTION_MOVE;
    ///           else
    ///             action = GDK_ACTION_COPY;
    ///          }
    ///
    ///       gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time);
    ///     }
    ///   else
    ///     gtk_drag_finish (context, FALSE, FALSE, time);
    ///  }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `drag-drop`
    ///  The ::drag-drop signal is emitted on the drop site when the user drops
    /// the data onto the widget. The signal handler must determine whether
    /// the cursor position is in a drop zone or not. If it is not in a drop
    /// zone, it returns [`false`] and no further processing is necessary.
    /// Otherwise, the handler returns [`true`]. In this case, the handler must
    /// ensure that `gtk_drag_finish()` is called to let the source know that
    /// the drop is done. The call to `gtk_drag_finish()` can be done either
    /// directly or in a [`drag-data-received`][struct@crate::Widget#drag-data-received] handler which gets
    /// triggered by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] to receive the data for one
    /// or more of the supported targets.
    ///
    ///
    ///
    ///
    /// #### `drag-end`
    ///  The ::drag-end signal is emitted on the drag source when a drag is
    /// finished. A typical reason to connect to this signal is to undo
    /// things done in [`drag-begin`][struct@crate::Widget#drag-begin].
    ///
    ///
    ///
    ///
    /// #### `drag-failed`
    ///  The ::drag-failed signal is emitted on the drag source when a drag has
    /// failed. The signal handler may hook custom code to handle a failed DnD
    /// operation based on the type of error, it returns [`true`] is the failure has
    /// been already handled (not showing the default "drag operation failed"
    /// animation), otherwise it returns [`false`].
    ///
    ///
    ///
    ///
    /// #### `drag-leave`
    ///  The ::drag-leave signal is emitted on the drop site when the cursor
    /// leaves the widget. A typical reason to connect to this signal is to
    /// undo things done in [`drag-motion`][struct@crate::Widget#drag-motion], e.g. undo highlighting
    /// with [`WidgetExt::drag_unhighlight()`][crate::prelude::WidgetExt::drag_unhighlight()].
    ///
    ///
    /// Likewise, the [`drag-leave`][struct@crate::Widget#drag-leave] signal is also emitted before the
    /// ::drag-drop signal, for instance to allow cleaning up of a preview item
    /// created in the [`drag-motion`][struct@crate::Widget#drag-motion] signal handler.
    ///
    ///
    ///
    ///
    /// #### `drag-motion`
    ///  The ::drag-motion signal is emitted on the drop site when the user
    /// moves the cursor over the widget during a drag. The signal handler
    /// must determine whether the cursor position is in a drop zone or not.
    /// If it is not in a drop zone, it returns [`false`] and no further processing
    /// is necessary. Otherwise, the handler returns [`true`]. In this case, the
    /// handler is responsible for providing the necessary information for
    /// displaying feedback to the user, by calling `gdk_drag_status()`.
    ///
    /// If the decision whether the drop will be accepted or rejected can't be
    /// made based solely on the cursor position and the type of the data, the
    /// handler may inspect the dragged data by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] and
    /// defer the `gdk_drag_status()` call to the [`drag-data-received`][struct@crate::Widget#drag-data-received]
    /// handler. Note that you must pass [`DestDefaults::DROP`][crate::DestDefaults::DROP],
    /// [`DestDefaults::MOTION`][crate::DestDefaults::MOTION] or [`DestDefaults::ALL`][crate::DestDefaults::ALL] to [`WidgetExtManual::drag_dest_set()`][crate::prelude::WidgetExtManual::drag_dest_set()]
    /// when using the drag-motion signal that way.
    ///
    /// Also note that there is no drag-enter signal. The drag receiver has to
    /// keep track of whether he has received any drag-motion signals since the
    /// last [`drag-leave`][struct@crate::Widget#drag-leave] and if not, treat the drag-motion signal as
    /// an "enter" signal. Upon an "enter", the handler will typically highlight
    /// the drop site with [`WidgetExt::drag_highlight()`][crate::prelude::WidgetExt::drag_highlight()].
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// drag_motion (GtkWidget      *widget,
    ///              GdkDragContext *context,
    ///              gint            x,
    ///              gint            y,
    ///              guint           time)
    /// {
    ///   GdkAtom target;
    ///
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (!private_data->drag_highlight)
    ///    {
    ///      private_data->drag_highlight = 1;
    ///      gtk_drag_highlight (widget);
    ///    }
    ///
    ///   target = gtk_drag_dest_find_target (widget, context, NULL);
    ///   if (target == GDK_NONE)
    ///     gdk_drag_status (context, 0, time);
    ///   else
    ///    {
    ///      private_data->pending_status
    ///         = gdk_drag_context_get_suggested_action (context);
    ///      gtk_drag_get_data (widget, context, target, time);
    ///    }
    ///
    ///   return TRUE;
    /// }
    ///
    /// static void
    /// drag_data_received (GtkWidget        *widget,
    ///                     GdkDragContext   *context,
    ///                     gint              x,
    ///                     gint              y,
    ///                     GtkSelectionData *selection_data,
    ///                     guint             info,
    ///                     guint             time)
    /// {
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (private_data->suggested_action)
    ///    {
    ///      private_data->suggested_action = 0;
    ///
    ///      // We are getting this data due to a request in drag_motion,
    ///      // rather than due to a request in drag_drop, so we are just
    ///      // supposed to call gdk_drag_status(), not actually paste in
    ///      // the data.
    ///
    ///      str = gtk_selection_data_get_text (selection_data);
    ///      if (!data_is_acceptable (str))
    ///        gdk_drag_status (context, 0, time);
    ///      else
    ///        gdk_drag_status (context,
    ///                         private_data->suggested_action,
    ///                         time);
    ///    }
    ///   else
    ///    {
    ///      // accept the drop
    ///    }
    /// }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `draw`
    ///  This signal is emitted when a widget is supposed to render itself.
    /// The `widget`'s top left corner must be painted at the origin of
    /// the passed in context and be sized to the values returned by
    /// [`WidgetExt::allocated_width()`][crate::prelude::WidgetExt::allocated_width()] and
    /// [`WidgetExt::allocated_height()`][crate::prelude::WidgetExt::allocated_height()].
    ///
    /// Signal handlers connected to this signal can modify the cairo
    /// context passed as `cr` in any way they like and don't need to
    /// restore it. The signal emission takes care of calling `cairo_save()`
    /// before and `cairo_restore()` after invoking the handler.
    ///
    /// The signal handler will get a `cr` with a clip region already set to the
    /// widget's dirty region, i.e. to the area that needs repainting. Complicated
    /// widgets that want to avoid redrawing themselves completely can get the full
    /// extents of the clip region with `gdk_cairo_get_clip_rectangle()`, or they can
    /// get a finer-grained representation of the dirty region with
    /// `cairo_copy_clip_rectangle_list()`.
    ///
    ///
    ///
    ///
    /// #### `enter-notify-event`
    ///  The ::enter-notify-event will be emitted when the pointer enters
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::ENTER_NOTIFY_MASK`][crate::gdk::EventMask::ENTER_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `event`
    ///  The GTK+ main loop will emit three signals for each GDK event delivered
    /// to a widget: one generic ::event signal, another, more specific,
    /// signal that matches the type of event delivered (e.g.
    /// [`key-press-event`][struct@crate::Widget#key-press-event]) and finally a generic
    /// [`event-after`][struct@crate::Widget#event-after] signal.
    ///
    ///
    ///
    ///
    /// #### `event-after`
    ///  After the emission of the [`event`][struct@crate::Widget#event] signal and (optionally)
    /// the second more specific signal, ::event-after will be emitted
    /// regardless of the previous two signals handlers return values.
    ///
    ///
    ///
    ///
    /// #### `focus`
    ///
    ///
    ///
    /// #### `focus-in-event`
    ///  The ::focus-in-event signal will be emitted when the keyboard focus
    /// enters the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `focus-out-event`
    ///  The ::focus-out-event signal will be emitted when the keyboard focus
    /// leaves the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `grab-broken-event`
    ///  Emitted when a pointer or keyboard grab on a window belonging
    /// to `widget` gets broken.
    ///
    /// On X11, this happens when the grab window becomes unviewable
    /// (i.e. it or one of its ancestors is unmapped), or if the same
    /// application grabs the pointer or keyboard again.
    ///
    ///
    ///
    ///
    /// #### `grab-focus`
    ///  Action
    ///
    ///
    /// #### `grab-notify`
    ///  The ::grab-notify signal is emitted when a widget becomes
    /// shadowed by a GTK+ grab (not a pointer or keyboard grab) on
    /// another widget, or when it becomes unshadowed due to a grab
    /// being removed.
    ///
    /// A widget is shadowed by a [`WidgetExt::grab_add()`][crate::prelude::WidgetExt::grab_add()] when the topmost
    /// grab widget in the grab stack of its window group is not
    /// its ancestor.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  The ::hide signal is emitted when `widget` is hidden, for example with
    /// [`WidgetExt::hide()`][crate::prelude::WidgetExt::hide()].
    ///
    ///
    ///
    ///
    /// #### `hierarchy-changed`
    ///  The ::hierarchy-changed signal is emitted when the
    /// anchored state of a widget changes. A widget is
    /// “anchored” when its toplevel
    /// ancestor is a [`Window`][crate::Window]. This signal is emitted when
    /// a widget changes from un-anchored to anchored or vice-versa.
    ///
    ///
    ///
    ///
    /// #### `key-press-event`
    ///  The ::key-press-event signal is emitted when a key is pressed. The signal
    /// emission will reoccur at the key-repeat rate when the key is kept pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_PRESS_MASK`][crate::gdk::EventMask::KEY_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `key-release-event`
    ///  The ::key-release-event signal is emitted when a key is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_RELEASE_MASK`][crate::gdk::EventMask::KEY_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Gets emitted if keyboard navigation fails.
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `leave-notify-event`
    ///  The ::leave-notify-event will be emitted when the pointer leaves
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::LEAVE_NOTIFY_MASK`][crate::gdk::EventMask::LEAVE_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  The ::map signal is emitted when `widget` is going to be mapped, that is
    /// when the widget is visible (which is controlled with
    /// [`WidgetExt::set_visible()`][crate::prelude::WidgetExt::set_visible()]) and all its parents up to the toplevel widget
    /// are also visible. Once the map has occurred, [`map-event`][struct@crate::Widget#map-event] will
    /// be emitted.
    ///
    /// The ::map signal can be used to determine whether a widget will be drawn,
    /// for instance it can resume an animation that was stopped during the
    /// emission of [`unmap`][struct@crate::Widget#unmap].
    ///
    ///
    ///
    ///
    /// #### `map-event`
    ///  The ::map-event signal will be emitted when the `widget`'s window is
    /// mapped. A window is mapped when it becomes visible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  The default handler for this signal activates `widget` if `group_cycling`
    /// is [`false`], or just makes `widget` grab focus if `group_cycling` is [`true`].
    ///
    ///
    ///
    ///
    /// #### `motion-notify-event`
    ///  The ::motion-notify-event signal is emitted when the pointer moves
    /// over the widget's [`gdk::Window`][crate::gdk::Window].
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::POINTER_MOTION_MASK`][crate::gdk::EventMask::POINTER_MOTION_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Action
    ///
    ///
    /// #### `parent-set`
    ///  The ::parent-set signal is emitted when a new parent
    /// has been set on a widget.
    ///
    ///
    ///
    ///
    /// #### `popup-menu`
    ///  This signal gets emitted whenever a widget should pop up a context
    /// menu. This usually happens through the standard key binding mechanism;
    /// by pressing a certain key while a widget is focused, the user can cause
    /// the widget to pop up a menu. For example, the [`Entry`][crate::Entry] widget creates
    /// a menu with clipboard commands. See the
    /// [Popup Menu Migration Checklist][checklist-popup-menu]
    /// for an example of how to use this signal.
    ///
    /// Action
    ///
    ///
    /// #### `property-notify-event`
    ///  The ::property-notify-event signal will be emitted when a property on
    /// the `widget`'s window has been changed or deleted.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROPERTY_CHANGE_MASK`][crate::gdk::EventMask::PROPERTY_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `proximity-in-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_IN_MASK`][crate::gdk::EventMask::PROXIMITY_IN_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `proximity-out-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_OUT_MASK`][crate::gdk::EventMask::PROXIMITY_OUT_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when [`has-tooltip`][struct@crate::Widget#has-tooltip] is [`true`] and the hover timeout
    /// has expired with the cursor hovering "above" `widget`; or emitted when `widget` got
    /// focus in keyboard mode.
    ///
    /// Using the given coordinates, the signal handler should determine
    /// whether a tooltip should be shown for `widget`. If this is the case
    /// [`true`] should be returned, [`false`] otherwise. Note that if
    /// `keyboard_mode` is [`true`], the values of `x` and `y` are undefined and
    /// should not be used.
    ///
    /// The signal handler is free to manipulate `tooltip` with the therefore
    /// destined function calls.
    ///
    ///
    ///
    ///
    /// #### `realize`
    ///  The ::realize signal is emitted when `widget` is associated with a
    /// [`gdk::Window`][crate::gdk::Window], which means that [`WidgetExt::realize()`][crate::prelude::WidgetExt::realize()] has been called or the
    /// widget has been mapped (that is, it is going to be drawn).
    ///
    ///
    ///
    ///
    /// #### `screen-changed`
    ///  The ::screen-changed signal gets emitted when the
    /// screen of a widget has changed.
    ///
    ///
    ///
    ///
    /// #### `scroll-event`
    ///  The ::scroll-event signal is emitted when a button in the 4 to 7
    /// range is pressed. Wheel mice are usually configured to generate
    /// button press events for buttons 4 and 5 when the wheel is turned.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::SCROLL_MASK`][crate::gdk::EventMask::SCROLL_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `selection-clear-event`
    ///  The ::selection-clear-event signal will be emitted when the
    /// the `widget`'s window has lost ownership of a selection.
    ///
    ///
    ///
    ///
    /// #### `selection-get`
    ///
    ///
    ///
    /// #### `selection-notify-event`
    ///
    ///
    ///
    /// #### `selection-received`
    ///
    ///
    ///
    /// #### `selection-request-event`
    ///  The ::selection-request-event signal will be emitted when
    /// another client requests ownership of the selection owned by
    /// the `widget`'s window.
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  The ::show signal is emitted when `widget` is shown, for example with
    /// [`WidgetExt::show()`][crate::prelude::WidgetExt::show()].
    ///
    ///
    ///
    ///
    /// #### `show-help`
    ///  Action
    ///
    ///
    /// #### `size-allocate`
    ///
    ///
    ///
    /// #### `state-changed`
    ///  The ::state-changed signal is emitted when the widget state changes.
    /// See `gtk_widget_get_state()`.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  The ::state-flags-changed signal is emitted when the widget state
    /// changes, see [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `style-set`
    ///  The ::style-set signal is emitted when a new style has been set
    /// on a widget. Note that style-modifying functions like
    /// `gtk_widget_modify_base()` also cause this signal to be emitted.
    ///
    /// Note that this signal is emitted for changes to the deprecated
    /// `GtkStyle`. To track changes to the [`StyleContext`][crate::StyleContext] associated
    /// with a widget, use the [`style-updated`][struct@crate::Widget#style-updated] signal.
    ///
    ///
    ///
    ///
    /// #### `style-updated`
    ///  The ::style-updated signal is a convenience signal that is emitted when the
    /// [`changed`][struct@crate::StyleContext#changed] signal is emitted on the `widget`'s associated
    /// [`StyleContext`][crate::StyleContext] as returned by [`WidgetExt::style_context()`][crate::prelude::WidgetExt::style_context()].
    ///
    /// Note that style-modifying functions like `gtk_widget_override_color()` also
    /// cause this signal to be emitted.
    ///
    ///
    ///
    ///
    /// #### `touch-event`
    ///
    ///
    ///
    /// #### `unmap`
    ///  The ::unmap signal is emitted when `widget` is going to be unmapped, which
    /// means that either it or any of its parents up to the toplevel widget have
    /// been set as hidden.
    ///
    /// As ::unmap indicates that a widget will not be shown any longer, it can be
    /// used to, for example, stop an animation on the widget.
    ///
    ///
    ///
    ///
    /// #### `unmap-event`
    ///  The ::unmap-event signal will be emitted when the `widget`'s window is
    /// unmapped. A window is unmapped when it becomes invisible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  The ::unrealize signal is emitted when the [`gdk::Window`][crate::gdk::Window] associated with
    /// `widget` is destroyed, which means that [`WidgetExt::unrealize()`][crate::prelude::WidgetExt::unrealize()] has been
    /// called or the widget has been unmapped (that is, it is going to be
    /// hidden).
    ///
    ///
    ///
    ///
    /// #### `visibility-notify-event`
    ///  The ::visibility-notify-event will be emitted when the `widget`'s
    /// window is obscured or unobscured.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::VISIBILITY_NOTIFY_MASK`][crate::gdk::EventMask::VISIBILITY_NOTIFY_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `window-state-event`
    ///  The ::window-state-event will be emitted when the state of the
    /// toplevel window associated to the `widget` changes.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable
    /// this mask automatically for all new windows.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`TextViewExt`][trait@crate::prelude::TextViewExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ScrollableExt`][trait@crate::prelude::ScrollableExt], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkTextView")]
    pub struct TextView(Object<ffi::GtkTextView, ffi::GtkTextViewClass>) @extends Container, Widget, @implements Buildable, Scrollable;

    match fn {
        type_ => || ffi::gtk_text_view_get_type(),
    }
}

impl TextView {
    pub const NONE: Option<&'static TextView> = None;

    /// Creates a new [`TextView`][crate::TextView]. If you don’t call [`TextViewExt::set_buffer()`][crate::prelude::TextViewExt::set_buffer()]
    /// before using the text view, an empty default buffer will be created
    /// for you. Get the buffer with [`TextViewExt::buffer()`][crate::prelude::TextViewExt::buffer()]. If you want
    /// to specify your own buffer, consider [`with_buffer()`][Self::with_buffer()].
    ///
    /// # Returns
    ///
    /// a new [`TextView`][crate::TextView]
    #[doc(alias = "gtk_text_view_new")]
    pub fn new() -> TextView {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_text_view_new()).unsafe_cast() }
    }

    /// Creates a new [`TextView`][crate::TextView] widget displaying the buffer
    /// `buffer`. One buffer can be shared among many widgets.
    /// `buffer` may be [`None`] to create a default buffer, in which case
    /// this function is equivalent to [`new()`][Self::new()]. The
    /// text view adds its own reference count to the buffer; it does not
    /// take over an existing reference.
    /// ## `buffer`
    /// a [`TextBuffer`][crate::TextBuffer]
    ///
    /// # Returns
    ///
    /// a new [`TextView`][crate::TextView].
    #[doc(alias = "gtk_text_view_new_with_buffer")]
    #[doc(alias = "new_with_buffer")]
    pub fn with_buffer(buffer: &impl IsA<TextBuffer>) -> TextView {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_text_view_new_with_buffer(
                buffer.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`TextView`] objects.
    ///
    /// This method returns an instance of [`TextViewBuilder`](crate::builders::TextViewBuilder) which can be used to create [`TextView`] objects.
    pub fn builder() -> TextViewBuilder {
        TextViewBuilder::new()
    }
}

impl Default for TextView {
    fn default() -> Self {
        Self::new()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`TextView`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct TextViewBuilder {
    builder: glib::object::ObjectBuilder<'static, TextView>,
}

impl TextViewBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    pub fn accepts_tab(self, accepts_tab: bool) -> Self {
        Self {
            builder: self.builder.property("accepts-tab", accepts_tab),
        }
    }

    /// The bottom margin for text in the text view.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-bottom`][struct@crate::Widget#margin-bottom].
    pub fn bottom_margin(self, bottom_margin: i32) -> Self {
        Self {
            builder: self.builder.property("bottom-margin", bottom_margin),
        }
    }

    pub fn buffer(self, buffer: &impl IsA<TextBuffer>) -> Self {
        Self {
            builder: self.builder.property("buffer", buffer.clone().upcast()),
        }
    }

    pub fn cursor_visible(self, cursor_visible: bool) -> Self {
        Self {
            builder: self.builder.property("cursor-visible", cursor_visible),
        }
    }

    pub fn editable(self, editable: bool) -> Self {
        Self {
            builder: self.builder.property("editable", editable),
        }
    }

    /// Which IM (input method) module should be used for this text_view.
    /// See [`IMContext`][crate::IMContext].
    ///
    /// Setting this to a non-[`None`] value overrides the
    /// system-wide IM module setting. See the GtkSettings
    /// [`gtk-im-module`][struct@crate::Settings#gtk-im-module] property.
    pub fn im_module(self, im_module: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("im-module", im_module.into()),
        }
    }

    pub fn indent(self, indent: i32) -> Self {
        Self {
            builder: self.builder.property("indent", indent),
        }
    }

    /// Additional hints (beyond [`input-purpose`][struct@crate::TextView#input-purpose]) that
    /// allow input methods to fine-tune their behaviour.
    pub fn input_hints(self, input_hints: InputHints) -> Self {
        Self {
            builder: self.builder.property("input-hints", input_hints),
        }
    }

    /// The purpose of this text field.
    ///
    /// This property can be used by on-screen keyboards and other input
    /// methods to adjust their behaviour.
    pub fn input_purpose(self, input_purpose: InputPurpose) -> Self {
        Self {
            builder: self.builder.property("input-purpose", input_purpose),
        }
    }

    pub fn justification(self, justification: Justification) -> Self {
        Self {
            builder: self.builder.property("justification", justification),
        }
    }

    /// The default left margin for text in the text view.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-left`][struct@crate::Widget#margin-left].
    pub fn left_margin(self, left_margin: i32) -> Self {
        Self {
            builder: self.builder.property("left-margin", left_margin),
        }
    }

    pub fn monospace(self, monospace: bool) -> Self {
        Self {
            builder: self.builder.property("monospace", monospace),
        }
    }

    pub fn overwrite(self, overwrite: bool) -> Self {
        Self {
            builder: self.builder.property("overwrite", overwrite),
        }
    }

    pub fn pixels_above_lines(self, pixels_above_lines: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("pixels-above-lines", pixels_above_lines),
        }
    }

    pub fn pixels_below_lines(self, pixels_below_lines: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("pixels-below-lines", pixels_below_lines),
        }
    }

    pub fn pixels_inside_wrap(self, pixels_inside_wrap: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("pixels-inside-wrap", pixels_inside_wrap),
        }
    }

    /// If :populate-all is [`true`], the [`populate-popup`][struct@crate::TextView#populate-popup]
    /// signal is also emitted for touch popups.
    pub fn populate_all(self, populate_all: bool) -> Self {
        Self {
            builder: self.builder.property("populate-all", populate_all),
        }
    }

    /// The default right margin for text in the text view.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-right`][struct@crate::Widget#margin-right].
    pub fn right_margin(self, right_margin: i32) -> Self {
        Self {
            builder: self.builder.property("right-margin", right_margin),
        }
    }

    pub fn tabs(self, tabs: &pango::TabArray) -> Self {
        Self {
            builder: self.builder.property("tabs", tabs),
        }
    }

    /// The top margin for text in the text view.
    ///
    /// Note that this property is confusingly named. In CSS terms,
    /// the value set here is padding, and it is applied in addition
    /// to the padding from the theme.
    ///
    /// Don't confuse this property with [`margin-top`][struct@crate::Widget#margin-top].
    pub fn top_margin(self, top_margin: i32) -> Self {
        Self {
            builder: self.builder.property("top-margin", top_margin),
        }
    }

    pub fn wrap_mode(self, wrap_mode: WrapMode) -> Self {
        Self {
            builder: self.builder.property("wrap-mode", wrap_mode),
        }
    }

    pub fn border_width(self, border_width: u32) -> Self {
        Self {
            builder: self.builder.property("border-width", border_width),
        }
    }

    pub fn child(self, child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self.builder.property("child", child.clone().upcast()),
        }
    }

    pub fn resize_mode(self, resize_mode: ResizeMode) -> Self {
        Self {
            builder: self.builder.property("resize-mode", resize_mode),
        }
    }

    pub fn app_paintable(self, app_paintable: bool) -> Self {
        Self {
            builder: self.builder.property("app-paintable", app_paintable),
        }
    }

    pub fn can_default(self, can_default: bool) -> Self {
        Self {
            builder: self.builder.property("can-default", can_default),
        }
    }

    pub fn can_focus(self, can_focus: bool) -> Self {
        Self {
            builder: self.builder.property("can-focus", can_focus),
        }
    }

    pub fn events(self, events: gdk::EventMask) -> Self {
        Self {
            builder: self.builder.property("events", events),
        }
    }

    /// Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    pub fn expand(self, expand: bool) -> Self {
        Self {
            builder: self.builder.property("expand", expand),
        }
    }

    /// Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    pub fn focus_on_click(self, focus_on_click: bool) -> Self {
        Self {
            builder: self.builder.property("focus-on-click", focus_on_click),
        }
    }

    /// How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    pub fn halign(self, halign: Align) -> Self {
        Self {
            builder: self.builder.property("halign", halign),
        }
    }

    pub fn has_default(self, has_default: bool) -> Self {
        Self {
            builder: self.builder.property("has-default", has_default),
        }
    }

    pub fn has_focus(self, has_focus: bool) -> Self {
        Self {
            builder: self.builder.property("has-focus", has_focus),
        }
    }

    /// Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] on `widget`.
    /// A value of [`true`] indicates that `widget` can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to determine
    /// whether it will provide a tooltip or not.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    pub fn has_tooltip(self, has_tooltip: bool) -> Self {
        Self {
            builder: self.builder.property("has-tooltip", has_tooltip),
        }
    }

    pub fn height_request(self, height_request: i32) -> Self {
        Self {
            builder: self.builder.property("height-request", height_request),
        }
    }

    /// Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    pub fn hexpand(self, hexpand: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand", hexpand),
        }
    }

    /// Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    pub fn hexpand_set(self, hexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand-set", hexpand_set),
        }
    }

    pub fn is_focus(self, is_focus: bool) -> Self {
        Self {
            builder: self.builder.property("is-focus", is_focus),
        }
    }

    /// Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    pub fn margin(self, margin: i32) -> Self {
        Self {
            builder: self.builder.property("margin", margin),
        }
    }

    /// Margin on bottom side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_bottom(self, margin_bottom: i32) -> Self {
        Self {
            builder: self.builder.property("margin-bottom", margin_bottom),
        }
    }

    /// Margin on end of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_end(self, margin_end: i32) -> Self {
        Self {
            builder: self.builder.property("margin-end", margin_end),
        }
    }

    /// Margin on start of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_start(self, margin_start: i32) -> Self {
        Self {
            builder: self.builder.property("margin-start", margin_start),
        }
    }

    /// Margin on top side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_top(self, margin_top: i32) -> Self {
        Self {
            builder: self.builder.property("margin-top", margin_top),
        }
    }

    pub fn name(self, name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("name", name.into()),
        }
    }

    pub fn no_show_all(self, no_show_all: bool) -> Self {
        Self {
            builder: self.builder.property("no-show-all", no_show_all),
        }
    }

    /// The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    pub fn opacity(self, opacity: f64) -> Self {
        Self {
            builder: self.builder.property("opacity", opacity),
        }
    }

    pub fn parent(self, parent: &impl IsA<Container>) -> Self {
        Self {
            builder: self.builder.property("parent", parent.clone().upcast()),
        }
    }

    pub fn receives_default(self, receives_default: bool) -> Self {
        Self {
            builder: self.builder.property("receives-default", receives_default),
        }
    }

    pub fn sensitive(self, sensitive: bool) -> Self {
        Self {
            builder: self.builder.property("sensitive", sensitive),
        }
    }

    /// Sets the text of tooltip to be the given string, which is marked up
    /// with the [Pango text markup language][PangoMarkupFormat].
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    pub fn tooltip_markup(self, tooltip_markup: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("tooltip-markup", tooltip_markup.into()),
        }
    }

    /// Sets the text of tooltip to be the given string.
    ///
    /// Also see [`Tooltip::set_text()`][crate::Tooltip::set_text()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    pub fn tooltip_text(self, tooltip_text: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("tooltip-text", tooltip_text.into()),
        }
    }

    /// How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    pub fn valign(self, valign: Align) -> Self {
        Self {
            builder: self.builder.property("valign", valign),
        }
    }

    /// Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    pub fn vexpand(self, vexpand: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand", vexpand),
        }
    }

    /// Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    pub fn vexpand_set(self, vexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand-set", vexpand_set),
        }
    }

    pub fn visible(self, visible: bool) -> Self {
        Self {
            builder: self.builder.property("visible", visible),
        }
    }

    pub fn width_request(self, width_request: i32) -> Self {
        Self {
            builder: self.builder.property("width-request", width_request),
        }
    }

    /// Horizontal [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is
    /// shared between the scrollable widget and its parent.
    pub fn hadjustment(self, hadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("hadjustment", hadjustment.clone().upcast()),
        }
    }

    /// Determines whether horizontal scrolling should start once the scrollable
    /// widget is allocated less than its minimum width or less than its natural width.
    pub fn hscroll_policy(self, hscroll_policy: ScrollablePolicy) -> Self {
        Self {
            builder: self.builder.property("hscroll-policy", hscroll_policy),
        }
    }

    /// Verical [`Adjustment`][crate::Adjustment] of the scrollable widget. This adjustment is shared
    /// between the scrollable widget and its parent.
    pub fn vadjustment(self, vadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("vadjustment", vadjustment.clone().upcast()),
        }
    }

    /// Determines whether vertical scrolling should start once the scrollable
    /// widget is allocated less than its minimum height or less than its natural height.
    pub fn vscroll_policy(self, vscroll_policy: ScrollablePolicy) -> Self {
        Self {
            builder: self.builder.property("vscroll-policy", vscroll_policy),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`TextView`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> TextView {
        assert_initialized_main_thread!();
        self.builder.build()
    }
}

/// Trait containing all [`struct@TextView`] methods.
///
/// # Implementors
///
/// [`TextView`][struct@crate::TextView]
pub trait TextViewExt: IsA<TextView> + 'static {
    /// Adds a child widget in the text buffer, at the given `anchor`.
    /// ## `child`
    /// a [`Widget`][crate::Widget]
    /// ## `anchor`
    /// a [`TextChildAnchor`][crate::TextChildAnchor] in the [`TextBuffer`][crate::TextBuffer] for `self`
    #[doc(alias = "gtk_text_view_add_child_at_anchor")]
    fn add_child_at_anchor(&self, child: &impl IsA<Widget>, anchor: &impl IsA<TextChildAnchor>) {
        unsafe {
            ffi::gtk_text_view_add_child_at_anchor(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                anchor.as_ref().to_glib_none().0,
            );
        }
    }

    /// Adds a child at fixed coordinates in one of the text widget's
    /// windows.
    ///
    /// The window must have nonzero size (see
    /// [`set_border_window_size()`][Self::set_border_window_size()]). Note that the child
    /// coordinates are given relative to scrolling. When
    /// placing a child in [`TextWindowType::Widget`][crate::TextWindowType::Widget], scrolling is
    /// irrelevant, the child floats above all scrollable areas. But when
    /// placing a child in one of the scrollable windows (border windows or
    /// text window) it will move with the scrolling as needed.
    /// ## `child`
    /// a [`Widget`][crate::Widget]
    /// ## `which_window`
    /// which window the child should appear in
    /// ## `xpos`
    /// X position of child in window coordinates
    /// ## `ypos`
    /// Y position of child in window coordinates
    #[doc(alias = "gtk_text_view_add_child_in_window")]
    fn add_child_in_window(
        &self,
        child: &impl IsA<Widget>,
        which_window: TextWindowType,
        xpos: i32,
        ypos: i32,
    ) {
        unsafe {
            ffi::gtk_text_view_add_child_in_window(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                which_window.into_glib(),
                xpos,
                ypos,
            );
        }
    }

    /// Moves the given `iter` backward by one display (wrapped) line.
    /// A display line is different from a paragraph. Paragraphs are
    /// separated by newlines or other paragraph separator characters.
    /// Display lines are created by line-wrapping a paragraph. If
    /// wrapping is turned off, display lines and paragraphs will be the
    /// same. Display lines are divided differently for each view, since
    /// they depend on the view’s width; paragraphs are the same in all
    /// views, since they depend on the contents of the [`TextBuffer`][crate::TextBuffer].
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` was moved and is not on the end iterator
    #[doc(alias = "gtk_text_view_backward_display_line")]
    fn backward_display_line(&self, iter: &mut TextIter) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_backward_display_line(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
            ))
        }
    }

    /// Moves the given `iter` backward to the next display line start.
    /// A display line is different from a paragraph. Paragraphs are
    /// separated by newlines or other paragraph separator characters.
    /// Display lines are created by line-wrapping a paragraph. If
    /// wrapping is turned off, display lines and paragraphs will be the
    /// same. Display lines are divided differently for each view, since
    /// they depend on the view’s width; paragraphs are the same in all
    /// views, since they depend on the contents of the [`TextBuffer`][crate::TextBuffer].
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` was moved and is not on the end iterator
    #[doc(alias = "gtk_text_view_backward_display_line_start")]
    fn backward_display_line_start(&self, iter: &mut TextIter) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_backward_display_line_start(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
            ))
        }
    }

    /// Converts coordinate (`buffer_x`, `buffer_y`) to coordinates for the window
    /// `win`, and stores the result in (`window_x`, `window_y`).
    ///
    /// Note that you can’t convert coordinates for a nonexisting window (see
    /// [`set_border_window_size()`][Self::set_border_window_size()]).
    /// ## `win`
    /// a [`TextWindowType`][crate::TextWindowType], except [`TextWindowType::Private`][crate::TextWindowType::Private]
    /// ## `buffer_x`
    /// buffer x coordinate
    /// ## `buffer_y`
    /// buffer y coordinate
    ///
    /// # Returns
    ///
    ///
    /// ## `window_x`
    /// window x coordinate return location or [`None`]
    ///
    /// ## `window_y`
    /// window y coordinate return location or [`None`]
    #[doc(alias = "gtk_text_view_buffer_to_window_coords")]
    fn buffer_to_window_coords(
        &self,
        win: TextWindowType,
        buffer_x: i32,
        buffer_y: i32,
    ) -> (i32, i32) {
        unsafe {
            let mut window_x = std::mem::MaybeUninit::uninit();
            let mut window_y = std::mem::MaybeUninit::uninit();
            ffi::gtk_text_view_buffer_to_window_coords(
                self.as_ref().to_glib_none().0,
                win.into_glib(),
                buffer_x,
                buffer_y,
                window_x.as_mut_ptr(),
                window_y.as_mut_ptr(),
            );
            (window_x.assume_init(), window_y.assume_init())
        }
    }

    /// Moves the given `iter` forward by one display (wrapped) line.
    /// A display line is different from a paragraph. Paragraphs are
    /// separated by newlines or other paragraph separator characters.
    /// Display lines are created by line-wrapping a paragraph. If
    /// wrapping is turned off, display lines and paragraphs will be the
    /// same. Display lines are divided differently for each view, since
    /// they depend on the view’s width; paragraphs are the same in all
    /// views, since they depend on the contents of the [`TextBuffer`][crate::TextBuffer].
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` was moved and is not on the end iterator
    #[doc(alias = "gtk_text_view_forward_display_line")]
    fn forward_display_line(&self, iter: &mut TextIter) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_forward_display_line(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
            ))
        }
    }

    /// Moves the given `iter` forward to the next display line end.
    /// A display line is different from a paragraph. Paragraphs are
    /// separated by newlines or other paragraph separator characters.
    /// Display lines are created by line-wrapping a paragraph. If
    /// wrapping is turned off, display lines and paragraphs will be the
    /// same. Display lines are divided differently for each view, since
    /// they depend on the view’s width; paragraphs are the same in all
    /// views, since they depend on the contents of the [`TextBuffer`][crate::TextBuffer].
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` was moved and is not on the end iterator
    #[doc(alias = "gtk_text_view_forward_display_line_end")]
    fn forward_display_line_end(&self, iter: &mut TextIter) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_forward_display_line_end(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
            ))
        }
    }

    /// Returns whether pressing the Tab key inserts a tab characters.
    /// [`set_accepts_tab()`][Self::set_accepts_tab()].
    ///
    /// # Returns
    ///
    /// [`true`] if pressing the Tab key inserts a tab character,
    ///  [`false`] if pressing the Tab key moves the keyboard focus.
    #[doc(alias = "gtk_text_view_get_accepts_tab")]
    #[doc(alias = "get_accepts_tab")]
    #[doc(alias = "accepts-tab")]
    fn accepts_tab(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_get_accepts_tab(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the width of the specified border window. See
    /// [`set_border_window_size()`][Self::set_border_window_size()].
    /// ## `type_`
    /// window to return size from
    ///
    /// # Returns
    ///
    /// width of window
    #[doc(alias = "gtk_text_view_get_border_window_size")]
    #[doc(alias = "get_border_window_size")]
    fn border_window_size(&self, type_: TextWindowType) -> i32 {
        unsafe {
            ffi::gtk_text_view_get_border_window_size(
                self.as_ref().to_glib_none().0,
                type_.into_glib(),
            )
        }
    }

    /// Gets the bottom margin for text in the `self`.
    ///
    /// # Returns
    ///
    /// bottom margin in pixels
    #[doc(alias = "gtk_text_view_get_bottom_margin")]
    #[doc(alias = "get_bottom_margin")]
    #[doc(alias = "bottom-margin")]
    fn bottom_margin(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_bottom_margin(self.as_ref().to_glib_none().0) }
    }

    /// Returns the [`TextBuffer`][crate::TextBuffer] being displayed by this text view.
    /// The reference count on the buffer is not incremented; the caller
    /// of this function won’t own a new reference.
    ///
    /// # Returns
    ///
    /// a [`TextBuffer`][crate::TextBuffer]
    #[doc(alias = "gtk_text_view_get_buffer")]
    #[doc(alias = "get_buffer")]
    fn buffer(&self) -> Option<TextBuffer> {
        unsafe {
            from_glib_none(ffi::gtk_text_view_get_buffer(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Given an `iter` within a text layout, determine the positions of the
    /// strong and weak cursors if the insertion point is at that
    /// iterator. The position of each cursor is stored as a zero-width
    /// rectangle. The strong cursor location is the location where
    /// characters of the directionality equal to the base direction of the
    /// paragraph are inserted. The weak cursor location is the location
    /// where characters of the directionality opposite to the base
    /// direction of the paragraph are inserted.
    ///
    /// If `iter` is [`None`], the actual cursor position is used.
    ///
    /// Note that if `iter` happens to be the actual cursor position, and
    /// there is currently an IM preedit sequence being entered, the
    /// returned locations will be adjusted to account for the preedit
    /// cursor’s offset within the preedit sequence.
    ///
    /// The rectangle position is in buffer coordinates; use
    /// [`buffer_to_window_coords()`][Self::buffer_to_window_coords()] to convert these
    /// coordinates to coordinates for one of the windows in the text view.
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    ///
    /// ## `strong`
    /// location to store the strong
    ///  cursor position (may be [`None`])
    ///
    /// ## `weak`
    /// location to store the weak
    ///  cursor position (may be [`None`])
    #[doc(alias = "gtk_text_view_get_cursor_locations")]
    #[doc(alias = "get_cursor_locations")]
    fn cursor_locations(&self, iter: Option<&TextIter>) -> (gdk::Rectangle, gdk::Rectangle) {
        unsafe {
            let mut strong = gdk::Rectangle::uninitialized();
            let mut weak = gdk::Rectangle::uninitialized();
            ffi::gtk_text_view_get_cursor_locations(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none().0,
                strong.to_glib_none_mut().0,
                weak.to_glib_none_mut().0,
            );
            (strong, weak)
        }
    }

    /// Find out whether the cursor should be displayed.
    ///
    /// # Returns
    ///
    /// whether the insertion mark is visible
    #[doc(alias = "gtk_text_view_get_cursor_visible")]
    #[doc(alias = "get_cursor_visible")]
    #[doc(alias = "cursor-visible")]
    fn is_cursor_visible(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_get_cursor_visible(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Obtains a copy of the default text attributes. These are the
    /// attributes used for text unless a tag overrides them.
    /// You’d typically pass the default attributes in to
    /// [`TextIter::is_attributes()`][crate::TextIter::is_attributes()] in order to get the
    /// attributes in effect at a given text position.
    ///
    /// The return value is a copy owned by the caller of this function,
    /// and should be freed with `gtk_text_attributes_unref()`.
    ///
    /// # Returns
    ///
    /// a new [`TextAttributes`][crate::TextAttributes]
    #[doc(alias = "gtk_text_view_get_default_attributes")]
    #[doc(alias = "get_default_attributes")]
    fn default_attributes(&self) -> TextAttributes {
        unsafe {
            from_glib_full(ffi::gtk_text_view_get_default_attributes(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the default editability of the [`TextView`][crate::TextView]. Tags in the
    /// buffer may override this setting for some ranges of text.
    ///
    /// # Returns
    ///
    /// whether text is editable by default
    #[doc(alias = "gtk_text_view_get_editable")]
    #[doc(alias = "get_editable")]
    #[doc(alias = "editable")]
    fn is_editable(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_get_editable(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the default indentation of paragraphs in `self`.
    /// Tags in the view’s buffer may override the default.
    /// The indentation may be negative.
    ///
    /// # Returns
    ///
    /// number of pixels of indentation
    #[doc(alias = "gtk_text_view_get_indent")]
    #[doc(alias = "get_indent")]
    fn indent(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_indent(self.as_ref().to_glib_none().0) }
    }

    /// Gets the value of the [`input-hints`][struct@crate::TextView#input-hints] property.
    #[doc(alias = "gtk_text_view_get_input_hints")]
    #[doc(alias = "get_input_hints")]
    #[doc(alias = "input-hints")]
    fn input_hints(&self) -> InputHints {
        unsafe {
            from_glib(ffi::gtk_text_view_get_input_hints(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the value of the [`input-purpose`][struct@crate::TextView#input-purpose] property.
    #[doc(alias = "gtk_text_view_get_input_purpose")]
    #[doc(alias = "get_input_purpose")]
    #[doc(alias = "input-purpose")]
    fn input_purpose(&self) -> InputPurpose {
        unsafe {
            from_glib(ffi::gtk_text_view_get_input_purpose(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Retrieves the iterator at buffer coordinates `x` and `y`. Buffer
    /// coordinates are coordinates for the entire buffer, not just the
    /// currently-displayed portion. If you have coordinates from an
    /// event, you have to convert those to buffer coordinates with
    /// [`window_to_buffer_coords()`][Self::window_to_buffer_coords()].
    /// ## `x`
    /// x position, in buffer coordinates
    /// ## `y`
    /// y position, in buffer coordinates
    ///
    /// # Returns
    ///
    /// [`true`] if the position is over text
    ///
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    #[doc(alias = "gtk_text_view_get_iter_at_location")]
    #[doc(alias = "get_iter_at_location")]
    fn iter_at_location(&self, x: i32, y: i32) -> Option<TextIter> {
        unsafe {
            let mut iter = TextIter::uninitialized();
            let ret = from_glib(ffi::gtk_text_view_get_iter_at_location(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
                x,
                y,
            ));
            if ret { Some(iter) } else { None }
        }
    }

    /// Retrieves the iterator pointing to the character at buffer
    /// coordinates `x` and `y`. Buffer coordinates are coordinates for
    /// the entire buffer, not just the currently-displayed portion.
    /// If you have coordinates from an event, you have to convert
    /// those to buffer coordinates with
    /// [`window_to_buffer_coords()`][Self::window_to_buffer_coords()].
    ///
    /// Note that this is different from [`iter_at_location()`][Self::iter_at_location()],
    /// which returns cursor locations, i.e. positions between
    /// characters.
    /// ## `x`
    /// x position, in buffer coordinates
    /// ## `y`
    /// y position, in buffer coordinates
    ///
    /// # Returns
    ///
    /// [`true`] if the position is over text
    ///
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// ## `trailing`
    /// if non-[`None`], location to store an integer indicating where
    ///  in the grapheme the user clicked. It will either be
    ///  zero, or the number of characters in the grapheme.
    ///  0 represents the trailing edge of the grapheme.
    #[doc(alias = "gtk_text_view_get_iter_at_position")]
    #[doc(alias = "get_iter_at_position")]
    fn iter_at_position(&self, x: i32, y: i32) -> Option<(TextIter, i32)> {
        unsafe {
            let mut iter = TextIter::uninitialized();
            let mut trailing = std::mem::MaybeUninit::uninit();
            let ret = from_glib(ffi::gtk_text_view_get_iter_at_position(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
                trailing.as_mut_ptr(),
                x,
                y,
            ));
            if ret {
                Some((iter, trailing.assume_init()))
            } else {
                None
            }
        }
    }

    /// Gets a rectangle which roughly contains the character at `iter`.
    /// The rectangle position is in buffer coordinates; use
    /// [`buffer_to_window_coords()`][Self::buffer_to_window_coords()] to convert these
    /// coordinates to coordinates for one of the windows in the text view.
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    ///
    /// ## `location`
    /// bounds of the character at `iter`
    #[doc(alias = "gtk_text_view_get_iter_location")]
    #[doc(alias = "get_iter_location")]
    fn iter_location(&self, iter: &TextIter) -> gdk::Rectangle {
        unsafe {
            let mut location = gdk::Rectangle::uninitialized();
            ffi::gtk_text_view_get_iter_location(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none().0,
                location.to_glib_none_mut().0,
            );
            location
        }
    }

    /// Gets the default justification of paragraphs in `self`.
    /// Tags in the buffer may override the default.
    ///
    /// # Returns
    ///
    /// default justification
    #[doc(alias = "gtk_text_view_get_justification")]
    #[doc(alias = "get_justification")]
    fn justification(&self) -> Justification {
        unsafe {
            from_glib(ffi::gtk_text_view_get_justification(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the default left margin size of paragraphs in the `self`.
    /// Tags in the buffer may override the default.
    ///
    /// # Returns
    ///
    /// left margin in pixels
    #[doc(alias = "gtk_text_view_get_left_margin")]
    #[doc(alias = "get_left_margin")]
    #[doc(alias = "left-margin")]
    fn left_margin(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_left_margin(self.as_ref().to_glib_none().0) }
    }

    /// Gets the [`TextIter`][crate::TextIter] at the start of the line containing
    /// the coordinate `y`. `y` is in buffer coordinates, convert from
    /// window coordinates with [`window_to_buffer_coords()`][Self::window_to_buffer_coords()].
    /// If non-[`None`], `line_top` will be filled with the coordinate of the top
    /// edge of the line.
    /// ## `y`
    /// a y coordinate
    ///
    /// # Returns
    ///
    ///
    /// ## `target_iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// ## `line_top`
    /// return location for top coordinate of the line
    #[doc(alias = "gtk_text_view_get_line_at_y")]
    #[doc(alias = "get_line_at_y")]
    fn line_at_y(&self, y: i32) -> (TextIter, i32) {
        unsafe {
            let mut target_iter = TextIter::uninitialized();
            let mut line_top = std::mem::MaybeUninit::uninit();
            ffi::gtk_text_view_get_line_at_y(
                self.as_ref().to_glib_none().0,
                target_iter.to_glib_none_mut().0,
                y,
                line_top.as_mut_ptr(),
            );
            (target_iter, line_top.assume_init())
        }
    }

    /// Gets the y coordinate of the top of the line containing `iter`,
    /// and the height of the line. The coordinate is a buffer coordinate;
    /// convert to window coordinates with [`buffer_to_window_coords()`][Self::buffer_to_window_coords()].
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    ///
    /// ## `y`
    /// return location for a y coordinate
    ///
    /// ## `height`
    /// return location for a height
    #[doc(alias = "gtk_text_view_get_line_yrange")]
    #[doc(alias = "get_line_yrange")]
    fn line_yrange(&self, iter: &TextIter) -> (i32, i32) {
        unsafe {
            let mut y = std::mem::MaybeUninit::uninit();
            let mut height = std::mem::MaybeUninit::uninit();
            ffi::gtk_text_view_get_line_yrange(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none().0,
                y.as_mut_ptr(),
                height.as_mut_ptr(),
            );
            (y.assume_init(), height.assume_init())
        }
    }

    /// Gets the value of the [`monospace`][struct@crate::TextView#monospace] property.
    ///
    /// # Returns
    ///
    /// [`true`] if monospace fonts are desired
    #[doc(alias = "gtk_text_view_get_monospace")]
    #[doc(alias = "get_monospace")]
    #[doc(alias = "monospace")]
    fn is_monospace(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_get_monospace(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns whether the [`TextView`][crate::TextView] is in overwrite mode or not.
    ///
    /// # Returns
    ///
    /// whether `self` is in overwrite mode or not.
    #[doc(alias = "gtk_text_view_get_overwrite")]
    #[doc(alias = "get_overwrite")]
    #[doc(alias = "overwrite")]
    fn overwrites(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_get_overwrite(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the default number of pixels to put above paragraphs.
    /// Adding this function with [`pixels_below_lines()`][Self::pixels_below_lines()]
    /// is equal to the line space between each paragraph.
    ///
    /// # Returns
    ///
    /// default number of pixels above paragraphs
    #[doc(alias = "gtk_text_view_get_pixels_above_lines")]
    #[doc(alias = "get_pixels_above_lines")]
    #[doc(alias = "pixels-above-lines")]
    fn pixels_above_lines(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_pixels_above_lines(self.as_ref().to_glib_none().0) }
    }

    /// Gets the value set by [`set_pixels_below_lines()`][Self::set_pixels_below_lines()].
    ///
    /// The line space is the sum of the value returned by this function and the
    /// value returned by [`pixels_above_lines()`][Self::pixels_above_lines()].
    ///
    /// # Returns
    ///
    /// default number of blank pixels below paragraphs
    #[doc(alias = "gtk_text_view_get_pixels_below_lines")]
    #[doc(alias = "get_pixels_below_lines")]
    #[doc(alias = "pixels-below-lines")]
    fn pixels_below_lines(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_pixels_below_lines(self.as_ref().to_glib_none().0) }
    }

    /// Gets the value set by [`set_pixels_inside_wrap()`][Self::set_pixels_inside_wrap()].
    ///
    /// # Returns
    ///
    /// default number of pixels of blank space between wrapped lines
    #[doc(alias = "gtk_text_view_get_pixels_inside_wrap")]
    #[doc(alias = "get_pixels_inside_wrap")]
    #[doc(alias = "pixels-inside-wrap")]
    fn pixels_inside_wrap(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_pixels_inside_wrap(self.as_ref().to_glib_none().0) }
    }

    /// Gets the default right margin for text in `self`. Tags
    /// in the buffer may override the default.
    ///
    /// # Returns
    ///
    /// right margin in pixels
    #[doc(alias = "gtk_text_view_get_right_margin")]
    #[doc(alias = "get_right_margin")]
    #[doc(alias = "right-margin")]
    fn right_margin(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_right_margin(self.as_ref().to_glib_none().0) }
    }

    /// Gets the default tabs for `self`. Tags in the buffer may
    /// override the defaults. The returned array will be [`None`] if
    /// “standard” (8-space) tabs are used. Free the return value
    /// with `pango_tab_array_free()`.
    ///
    /// # Returns
    ///
    /// copy of default tab array, or [`None`] if
    ///  “standard" tabs are used; must be freed with `pango_tab_array_free()`.
    #[doc(alias = "gtk_text_view_get_tabs")]
    #[doc(alias = "get_tabs")]
    fn tabs(&self) -> Option<pango::TabArray> {
        unsafe { from_glib_full(ffi::gtk_text_view_get_tabs(self.as_ref().to_glib_none().0)) }
    }

    /// Gets the top margin for text in the `self`.
    ///
    /// # Returns
    ///
    /// top margin in pixels
    #[doc(alias = "gtk_text_view_get_top_margin")]
    #[doc(alias = "get_top_margin")]
    #[doc(alias = "top-margin")]
    fn top_margin(&self) -> i32 {
        unsafe { ffi::gtk_text_view_get_top_margin(self.as_ref().to_glib_none().0) }
    }

    /// Fills `visible_rect` with the currently-visible
    /// region of the buffer, in buffer coordinates. Convert to window coordinates
    /// with [`buffer_to_window_coords()`][Self::buffer_to_window_coords()].
    ///
    /// # Returns
    ///
    ///
    /// ## `visible_rect`
    /// rectangle to fill
    #[doc(alias = "gtk_text_view_get_visible_rect")]
    #[doc(alias = "get_visible_rect")]
    fn visible_rect(&self) -> gdk::Rectangle {
        unsafe {
            let mut visible_rect = gdk::Rectangle::uninitialized();
            ffi::gtk_text_view_get_visible_rect(
                self.as_ref().to_glib_none().0,
                visible_rect.to_glib_none_mut().0,
            );
            visible_rect
        }
    }

    /// Retrieves the [`gdk::Window`][crate::gdk::Window] corresponding to an area of the text view;
    /// possible windows include the overall widget window, child windows
    /// on the left, right, top, bottom, and the window that displays the
    /// text buffer. Windows are [`None`] and nonexistent if their width or
    /// height is 0, and are nonexistent before the widget has been
    /// realized.
    /// ## `win`
    /// window to get
    ///
    /// # Returns
    ///
    /// a [`gdk::Window`][crate::gdk::Window], or [`None`]
    #[doc(alias = "gtk_text_view_get_window")]
    #[doc(alias = "get_window")]
    fn window(&self, win: TextWindowType) -> Option<gdk::Window> {
        unsafe {
            from_glib_none(ffi::gtk_text_view_get_window(
                self.as_ref().to_glib_none().0,
                win.into_glib(),
            ))
        }
    }

    /// Usually used to find out which window an event corresponds to.
    ///
    /// If you connect to an event signal on `self`, this function
    /// should be called on `event->window` to see which window it was.
    /// ## `window`
    /// a window type
    ///
    /// # Returns
    ///
    /// the window type.
    #[doc(alias = "gtk_text_view_get_window_type")]
    #[doc(alias = "get_window_type")]
    fn window_type(&self, window: &gdk::Window) -> TextWindowType {
        unsafe {
            from_glib(ffi::gtk_text_view_get_window_type(
                self.as_ref().to_glib_none().0,
                window.to_glib_none().0,
            ))
        }
    }

    /// Gets the line wrapping for the view.
    ///
    /// # Returns
    ///
    /// the line wrap setting
    #[doc(alias = "gtk_text_view_get_wrap_mode")]
    #[doc(alias = "get_wrap_mode")]
    #[doc(alias = "wrap-mode")]
    fn wrap_mode(&self) -> WrapMode {
        unsafe {
            from_glib(ffi::gtk_text_view_get_wrap_mode(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Allow the [`TextView`][crate::TextView] input method to internally handle key press
    /// and release events. If this function returns [`true`], then no further
    /// processing should be done for this key event. See
    /// [`IMContextExt::filter_keypress()`][crate::prelude::IMContextExt::filter_keypress()].
    ///
    /// Note that you are expected to call this function from your handler
    /// when overriding key event handling. This is needed in the case when
    /// you need to insert your own key handling between the input method
    /// and the default key event handling of the [`TextView`][crate::TextView].
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static gboolean
    /// gtk_foo_bar_key_press_event (GtkWidget   *widget,
    ///                              GdkEventKey *event)
    /// {
    ///   guint keyval;
    ///
    ///   gdk_event_get_keyval ((GdkEvent*)event, &keyval);
    ///
    ///   if (keyval == GDK_KEY_Return || keyval == GDK_KEY_KP_Enter)
    ///     {
    ///       if (gtk_text_view_im_context_filter_keypress (GTK_TEXT_VIEW (widget), event))
    ///         return TRUE;
    ///     }
    ///
    ///   // Do some stuff
    ///
    ///   return GTK_WIDGET_CLASS (gtk_foo_bar_parent_class)->key_press_event (widget, event);
    /// }
    /// ```
    /// ## `event`
    /// the key event
    ///
    /// # Returns
    ///
    /// [`true`] if the input method handled the key event.
    #[doc(alias = "gtk_text_view_im_context_filter_keypress")]
    fn im_context_filter_keypress(&self, event: &gdk::EventKey) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_im_context_filter_keypress(
                self.as_ref().to_glib_none().0,
                mut_override(event.to_glib_none().0),
            ))
        }
    }

    /// Updates the position of a child, as for [`add_child_in_window()`][Self::add_child_in_window()].
    /// ## `child`
    /// child widget already added to the text view
    /// ## `xpos`
    /// new X position in window coordinates
    /// ## `ypos`
    /// new Y position in window coordinates
    #[doc(alias = "gtk_text_view_move_child")]
    fn move_child(&self, child: &impl IsA<Widget>, xpos: i32, ypos: i32) {
        unsafe {
            ffi::gtk_text_view_move_child(
                self.as_ref().to_glib_none().0,
                child.as_ref().to_glib_none().0,
                xpos,
                ypos,
            );
        }
    }

    /// Moves a mark within the buffer so that it's
    /// located within the currently-visible text area.
    /// ## `mark`
    /// a [`TextMark`][crate::TextMark]
    ///
    /// # Returns
    ///
    /// [`true`] if the mark moved (wasn’t already onscreen)
    #[doc(alias = "gtk_text_view_move_mark_onscreen")]
    fn move_mark_onscreen(&self, mark: &impl IsA<TextMark>) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_move_mark_onscreen(
                self.as_ref().to_glib_none().0,
                mark.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Move the iterator a given number of characters visually, treating
    /// it as the strong cursor position. If `count` is positive, then the
    /// new strong cursor position will be `count` positions to the right of
    /// the old cursor position. If `count` is negative then the new strong
    /// cursor position will be `count` positions to the left of the old
    /// cursor position.
    ///
    /// In the presence of bi-directional text, the correspondence
    /// between logical and visual order will depend on the direction
    /// of the current run, and there may be jumps when the cursor
    /// is moved off of the end of a run.
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    /// ## `count`
    /// number of characters to move (negative moves left,
    ///  positive moves right)
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` moved and is not on the end iterator
    #[doc(alias = "gtk_text_view_move_visually")]
    fn move_visually(&self, iter: &mut TextIter, count: i32) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_move_visually(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
                count,
            ))
        }
    }

    /// Moves the cursor to the currently visible region of the
    /// buffer, it it isn’t there already.
    ///
    /// # Returns
    ///
    /// [`true`] if the cursor had to be moved.
    #[doc(alias = "gtk_text_view_place_cursor_onscreen")]
    fn place_cursor_onscreen(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_place_cursor_onscreen(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Ensures that the cursor is shown (i.e. not in an 'off' blink
    /// interval) and resets the time that it will stay blinking (or
    /// visible, in case blinking is disabled).
    ///
    /// This function should be called in response to user input
    /// (e.g. from derived classes that override the textview's
    /// [`key-press-event`][struct@crate::Widget#key-press-event] handler).
    #[doc(alias = "gtk_text_view_reset_cursor_blink")]
    fn reset_cursor_blink(&self) {
        unsafe {
            ffi::gtk_text_view_reset_cursor_blink(self.as_ref().to_glib_none().0);
        }
    }

    /// Reset the input method context of the text view if needed.
    ///
    /// This can be necessary in the case where modifying the buffer
    /// would confuse on-going input method behavior.
    #[doc(alias = "gtk_text_view_reset_im_context")]
    fn reset_im_context(&self) {
        unsafe {
            ffi::gtk_text_view_reset_im_context(self.as_ref().to_glib_none().0);
        }
    }

    /// Scrolls `self` the minimum distance such that `mark` is contained
    /// within the visible area of the widget.
    /// ## `mark`
    /// a mark in the buffer for `self`
    #[doc(alias = "gtk_text_view_scroll_mark_onscreen")]
    fn scroll_mark_onscreen(&self, mark: &impl IsA<TextMark>) {
        unsafe {
            ffi::gtk_text_view_scroll_mark_onscreen(
                self.as_ref().to_glib_none().0,
                mark.as_ref().to_glib_none().0,
            );
        }
    }

    /// Scrolls `self` so that `iter` is on the screen in the position
    /// indicated by `xalign` and `yalign`. An alignment of 0.0 indicates
    /// left or top, 1.0 indicates right or bottom, 0.5 means center.
    /// If `use_align` is [`false`], the text scrolls the minimal distance to
    /// get the mark onscreen, possibly not scrolling at all. The effective
    /// screen for purposes of this function is reduced by a margin of size
    /// `within_margin`.
    ///
    /// Note that this function uses the currently-computed height of the
    /// lines in the text buffer. Line heights are computed in an idle
    /// handler; so this function may not have the desired effect if it’s
    /// called before the height computations. To avoid oddness, consider
    /// using [`scroll_to_mark()`][Self::scroll_to_mark()] which saves a point to be
    /// scrolled to after line validation.
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    /// ## `within_margin`
    /// margin as a [0.0,0.5) fraction of screen size
    /// ## `use_align`
    /// whether to use alignment arguments (if [`false`],
    ///  just get the mark onscreen)
    /// ## `xalign`
    /// horizontal alignment of mark within visible area
    /// ## `yalign`
    /// vertical alignment of mark within visible area
    ///
    /// # Returns
    ///
    /// [`true`] if scrolling occurred
    #[doc(alias = "gtk_text_view_scroll_to_iter")]
    fn scroll_to_iter(
        &self,
        iter: &mut TextIter,
        within_margin: f64,
        use_align: bool,
        xalign: f64,
        yalign: f64,
    ) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_scroll_to_iter(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
                within_margin,
                use_align.into_glib(),
                xalign,
                yalign,
            ))
        }
    }

    /// Scrolls `self` so that `mark` is on the screen in the position
    /// indicated by `xalign` and `yalign`. An alignment of 0.0 indicates
    /// left or top, 1.0 indicates right or bottom, 0.5 means center.
    /// If `use_align` is [`false`], the text scrolls the minimal distance to
    /// get the mark onscreen, possibly not scrolling at all. The effective
    /// screen for purposes of this function is reduced by a margin of size
    /// `within_margin`.
    /// ## `mark`
    /// a [`TextMark`][crate::TextMark]
    /// ## `within_margin`
    /// margin as a [0.0,0.5) fraction of screen size
    /// ## `use_align`
    /// whether to use alignment arguments (if [`false`], just
    ///  get the mark onscreen)
    /// ## `xalign`
    /// horizontal alignment of mark within visible area
    /// ## `yalign`
    /// vertical alignment of mark within visible area
    #[doc(alias = "gtk_text_view_scroll_to_mark")]
    fn scroll_to_mark(
        &self,
        mark: &impl IsA<TextMark>,
        within_margin: f64,
        use_align: bool,
        xalign: f64,
        yalign: f64,
    ) {
        unsafe {
            ffi::gtk_text_view_scroll_to_mark(
                self.as_ref().to_glib_none().0,
                mark.as_ref().to_glib_none().0,
                within_margin,
                use_align.into_glib(),
                xalign,
                yalign,
            );
        }
    }

    /// Sets the behavior of the text widget when the Tab key is pressed.
    /// If `accepts_tab` is [`true`], a tab character is inserted. If `accepts_tab`
    /// is [`false`] the keyboard focus is moved to the next widget in the focus
    /// chain.
    /// ## `accepts_tab`
    /// [`true`] if pressing the Tab key should insert a tab
    ///  character, [`false`], if pressing the Tab key should move the
    ///  keyboard focus.
    #[doc(alias = "gtk_text_view_set_accepts_tab")]
    #[doc(alias = "accepts-tab")]
    fn set_accepts_tab(&self, accepts_tab: bool) {
        unsafe {
            ffi::gtk_text_view_set_accepts_tab(
                self.as_ref().to_glib_none().0,
                accepts_tab.into_glib(),
            );
        }
    }

    /// Sets the width of [`TextWindowType::Left`][crate::TextWindowType::Left] or [`TextWindowType::Right`][crate::TextWindowType::Right],
    /// or the height of [`TextWindowType::Top`][crate::TextWindowType::Top] or [`TextWindowType::Bottom`][crate::TextWindowType::Bottom].
    /// Automatically destroys the corresponding window if the size is set
    /// to 0, and creates the window if the size is set to non-zero. This
    /// function can only be used for the “border windows”, and it won’t
    /// work with [`TextWindowType::Widget`][crate::TextWindowType::Widget], [`TextWindowType::Text`][crate::TextWindowType::Text], or
    /// [`TextWindowType::Private`][crate::TextWindowType::Private].
    /// ## `type_`
    /// window to affect
    /// ## `size`
    /// width or height of the window
    #[doc(alias = "gtk_text_view_set_border_window_size")]
    fn set_border_window_size(&self, type_: TextWindowType, size: i32) {
        unsafe {
            ffi::gtk_text_view_set_border_window_size(
                self.as_ref().to_glib_none().0,
                type_.into_glib(),
                size,
            );
        }
    }

    /// Sets the bottom margin for text in `self`.
    ///
    /// Note that this function is confusingly named.
    /// In CSS terms, the value set here is padding.
    /// ## `bottom_margin`
    /// bottom margin in pixels
    #[doc(alias = "gtk_text_view_set_bottom_margin")]
    #[doc(alias = "bottom-margin")]
    fn set_bottom_margin(&self, bottom_margin: i32) {
        unsafe {
            ffi::gtk_text_view_set_bottom_margin(self.as_ref().to_glib_none().0, bottom_margin);
        }
    }

    /// Sets `buffer` as the buffer being displayed by `self`. The previous
    /// buffer displayed by the text view is unreferenced, and a reference is
    /// added to `buffer`. If you owned a reference to `buffer` before passing it
    /// to this function, you must remove that reference yourself; [`TextView`][crate::TextView]
    /// will not “adopt” it.
    /// ## `buffer`
    /// a [`TextBuffer`][crate::TextBuffer]
    #[doc(alias = "gtk_text_view_set_buffer")]
    #[doc(alias = "buffer")]
    fn set_buffer(&self, buffer: Option<&impl IsA<TextBuffer>>) {
        unsafe {
            ffi::gtk_text_view_set_buffer(
                self.as_ref().to_glib_none().0,
                buffer.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Toggles whether the insertion point should be displayed. A buffer with
    /// no editable text probably shouldn’t have a visible cursor, so you may
    /// want to turn the cursor off.
    ///
    /// Note that this property may be overridden by the
    /// [`gtk-keynave-use-caret`][struct@crate::Settings#gtk-keynave-use-caret] settings.
    /// ## `setting`
    /// whether to show the insertion cursor
    #[doc(alias = "gtk_text_view_set_cursor_visible")]
    #[doc(alias = "cursor-visible")]
    fn set_cursor_visible(&self, setting: bool) {
        unsafe {
            ffi::gtk_text_view_set_cursor_visible(
                self.as_ref().to_glib_none().0,
                setting.into_glib(),
            );
        }
    }

    /// Sets the default editability of the [`TextView`][crate::TextView]. You can override
    /// this default setting with tags in the buffer, using the “editable”
    /// attribute of tags.
    /// ## `setting`
    /// whether it’s editable
    #[doc(alias = "gtk_text_view_set_editable")]
    #[doc(alias = "editable")]
    fn set_editable(&self, setting: bool) {
        unsafe {
            ffi::gtk_text_view_set_editable(self.as_ref().to_glib_none().0, setting.into_glib());
        }
    }

    /// Sets the default indentation for paragraphs in `self`.
    /// Tags in the buffer may override the default.
    /// ## `indent`
    /// indentation in pixels
    #[doc(alias = "gtk_text_view_set_indent")]
    #[doc(alias = "indent")]
    fn set_indent(&self, indent: i32) {
        unsafe {
            ffi::gtk_text_view_set_indent(self.as_ref().to_glib_none().0, indent);
        }
    }

    /// Sets the [`input-hints`][struct@crate::TextView#input-hints] property, which
    /// allows input methods to fine-tune their behaviour.
    /// ## `hints`
    /// the hints
    #[doc(alias = "gtk_text_view_set_input_hints")]
    #[doc(alias = "input-hints")]
    fn set_input_hints(&self, hints: InputHints) {
        unsafe {
            ffi::gtk_text_view_set_input_hints(self.as_ref().to_glib_none().0, hints.into_glib());
        }
    }

    /// Sets the [`input-purpose`][struct@crate::TextView#input-purpose] property which
    /// can be used by on-screen keyboards and other input
    /// methods to adjust their behaviour.
    /// ## `purpose`
    /// the purpose
    #[doc(alias = "gtk_text_view_set_input_purpose")]
    #[doc(alias = "input-purpose")]
    fn set_input_purpose(&self, purpose: InputPurpose) {
        unsafe {
            ffi::gtk_text_view_set_input_purpose(
                self.as_ref().to_glib_none().0,
                purpose.into_glib(),
            );
        }
    }

    /// Sets the default justification of text in `self`.
    /// Tags in the view’s buffer may override the default.
    /// ## `justification`
    /// justification
    #[doc(alias = "gtk_text_view_set_justification")]
    #[doc(alias = "justification")]
    fn set_justification(&self, justification: Justification) {
        unsafe {
            ffi::gtk_text_view_set_justification(
                self.as_ref().to_glib_none().0,
                justification.into_glib(),
            );
        }
    }

    /// Sets the default left margin for text in `self`.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this function is confusingly named.
    /// In CSS terms, the value set here is padding.
    /// ## `left_margin`
    /// left margin in pixels
    #[doc(alias = "gtk_text_view_set_left_margin")]
    #[doc(alias = "left-margin")]
    fn set_left_margin(&self, left_margin: i32) {
        unsafe {
            ffi::gtk_text_view_set_left_margin(self.as_ref().to_glib_none().0, left_margin);
        }
    }

    /// Sets the [`monospace`][struct@crate::TextView#monospace] property, which
    /// indicates that the text view should use monospace
    /// fonts.
    /// ## `monospace`
    /// [`true`] to request monospace styling
    #[doc(alias = "gtk_text_view_set_monospace")]
    #[doc(alias = "monospace")]
    fn set_monospace(&self, monospace: bool) {
        unsafe {
            ffi::gtk_text_view_set_monospace(self.as_ref().to_glib_none().0, monospace.into_glib());
        }
    }

    /// Changes the [`TextView`][crate::TextView] overwrite mode.
    /// ## `overwrite`
    /// [`true`] to turn on overwrite mode, [`false`] to turn it off
    #[doc(alias = "gtk_text_view_set_overwrite")]
    #[doc(alias = "overwrite")]
    fn set_overwrite(&self, overwrite: bool) {
        unsafe {
            ffi::gtk_text_view_set_overwrite(self.as_ref().to_glib_none().0, overwrite.into_glib());
        }
    }

    /// Sets the default number of blank pixels above paragraphs in `self`.
    /// Tags in the buffer for `self` may override the defaults.
    /// ## `pixels_above_lines`
    /// pixels above paragraphs
    #[doc(alias = "gtk_text_view_set_pixels_above_lines")]
    #[doc(alias = "pixels-above-lines")]
    fn set_pixels_above_lines(&self, pixels_above_lines: i32) {
        unsafe {
            ffi::gtk_text_view_set_pixels_above_lines(
                self.as_ref().to_glib_none().0,
                pixels_above_lines,
            );
        }
    }

    /// Sets the default number of pixels of blank space
    /// to put below paragraphs in `self`. May be overridden
    /// by tags applied to `self`’s buffer.
    /// ## `pixels_below_lines`
    /// pixels below paragraphs
    #[doc(alias = "gtk_text_view_set_pixels_below_lines")]
    #[doc(alias = "pixels-below-lines")]
    fn set_pixels_below_lines(&self, pixels_below_lines: i32) {
        unsafe {
            ffi::gtk_text_view_set_pixels_below_lines(
                self.as_ref().to_glib_none().0,
                pixels_below_lines,
            );
        }
    }

    /// Sets the default number of pixels of blank space to leave between
    /// display/wrapped lines within a paragraph. May be overridden by
    /// tags in `self`’s buffer.
    /// ## `pixels_inside_wrap`
    /// default number of pixels between wrapped lines
    #[doc(alias = "gtk_text_view_set_pixels_inside_wrap")]
    #[doc(alias = "pixels-inside-wrap")]
    fn set_pixels_inside_wrap(&self, pixels_inside_wrap: i32) {
        unsafe {
            ffi::gtk_text_view_set_pixels_inside_wrap(
                self.as_ref().to_glib_none().0,
                pixels_inside_wrap,
            );
        }
    }

    /// Sets the default right margin for text in the text view.
    /// Tags in the buffer may override the default.
    ///
    /// Note that this function is confusingly named.
    /// In CSS terms, the value set here is padding.
    /// ## `right_margin`
    /// right margin in pixels
    #[doc(alias = "gtk_text_view_set_right_margin")]
    #[doc(alias = "right-margin")]
    fn set_right_margin(&self, right_margin: i32) {
        unsafe {
            ffi::gtk_text_view_set_right_margin(self.as_ref().to_glib_none().0, right_margin);
        }
    }

    /// Sets the default tab stops for paragraphs in `self`.
    /// Tags in the buffer may override the default.
    /// ## `tabs`
    /// tabs as a [`pango::TabArray`][crate::pango::TabArray]
    #[doc(alias = "gtk_text_view_set_tabs")]
    #[doc(alias = "tabs")]
    fn set_tabs(&self, tabs: &pango::TabArray) {
        unsafe {
            ffi::gtk_text_view_set_tabs(
                self.as_ref().to_glib_none().0,
                mut_override(tabs.to_glib_none().0),
            );
        }
    }

    /// Sets the top margin for text in `self`.
    ///
    /// Note that this function is confusingly named.
    /// In CSS terms, the value set here is padding.
    /// ## `top_margin`
    /// top margin in pixels
    #[doc(alias = "gtk_text_view_set_top_margin")]
    #[doc(alias = "top-margin")]
    fn set_top_margin(&self, top_margin: i32) {
        unsafe {
            ffi::gtk_text_view_set_top_margin(self.as_ref().to_glib_none().0, top_margin);
        }
    }

    /// Sets the line wrapping for the view.
    /// ## `wrap_mode`
    /// a [`WrapMode`][crate::WrapMode]
    #[doc(alias = "gtk_text_view_set_wrap_mode")]
    #[doc(alias = "wrap-mode")]
    fn set_wrap_mode(&self, wrap_mode: WrapMode) {
        unsafe {
            ffi::gtk_text_view_set_wrap_mode(self.as_ref().to_glib_none().0, wrap_mode.into_glib());
        }
    }

    /// Determines whether `iter` is at the start of a display line.
    /// See [`forward_display_line()`][Self::forward_display_line()] for an explanation of
    /// display lines vs. paragraphs.
    /// ## `iter`
    /// a [`TextIter`][crate::TextIter]
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` begins a wrapped line
    #[doc(alias = "gtk_text_view_starts_display_line")]
    fn starts_display_line(&self, iter: &TextIter) -> bool {
        unsafe {
            from_glib(ffi::gtk_text_view_starts_display_line(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none().0,
            ))
        }
    }

    /// Converts coordinates on the window identified by `win` to buffer
    /// coordinates, storing the result in (`buffer_x`,`buffer_y`).
    ///
    /// Note that you can’t convert coordinates for a nonexisting window (see
    /// [`set_border_window_size()`][Self::set_border_window_size()]).
    /// ## `win`
    /// a [`TextWindowType`][crate::TextWindowType] except [`TextWindowType::Private`][crate::TextWindowType::Private]
    /// ## `window_x`
    /// window x coordinate
    /// ## `window_y`
    /// window y coordinate
    ///
    /// # Returns
    ///
    ///
    /// ## `buffer_x`
    /// buffer x coordinate return location or [`None`]
    ///
    /// ## `buffer_y`
    /// buffer y coordinate return location or [`None`]
    #[doc(alias = "gtk_text_view_window_to_buffer_coords")]
    fn window_to_buffer_coords(
        &self,
        win: TextWindowType,
        window_x: i32,
        window_y: i32,
    ) -> (i32, i32) {
        unsafe {
            let mut buffer_x = std::mem::MaybeUninit::uninit();
            let mut buffer_y = std::mem::MaybeUninit::uninit();
            ffi::gtk_text_view_window_to_buffer_coords(
                self.as_ref().to_glib_none().0,
                win.into_glib(),
                window_x,
                window_y,
                buffer_x.as_mut_ptr(),
                buffer_y.as_mut_ptr(),
            );
            (buffer_x.assume_init(), buffer_y.assume_init())
        }
    }

    /// Which IM (input method) module should be used for this text_view.
    /// See [`IMContext`][crate::IMContext].
    ///
    /// Setting this to a non-[`None`] value overrides the
    /// system-wide IM module setting. See the GtkSettings
    /// [`gtk-im-module`][struct@crate::Settings#gtk-im-module] property.
    #[doc(alias = "im-module")]
    fn im_module(&self) -> Option<glib::GString> {
        ObjectExt::property(self.as_ref(), "im-module")
    }

    /// Which IM (input method) module should be used for this text_view.
    /// See [`IMContext`][crate::IMContext].
    ///
    /// Setting this to a non-[`None`] value overrides the
    /// system-wide IM module setting. See the GtkSettings
    /// [`gtk-im-module`][struct@crate::Settings#gtk-im-module] property.
    #[doc(alias = "im-module")]
    fn set_im_module(&self, im_module: Option<&str>) {
        ObjectExt::set_property(self.as_ref(), "im-module", im_module)
    }

    /// If :populate-all is [`true`], the [`populate-popup`][struct@crate::TextView#populate-popup]
    /// signal is also emitted for touch popups.
    #[doc(alias = "populate-all")]
    fn populates_all(&self) -> bool {
        ObjectExt::property(self.as_ref(), "populate-all")
    }

    /// If :populate-all is [`true`], the [`populate-popup`][struct@crate::TextView#populate-popup]
    /// signal is also emitted for touch popups.
    #[doc(alias = "populate-all")]
    fn set_populate_all(&self, populate_all: bool) {
        ObjectExt::set_property(self.as_ref(), "populate-all", populate_all)
    }

    /// The ::backspace signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user asks for it.
    ///
    /// The default bindings for this signal are
    /// Backspace and Shift-Backspace.
    #[doc(alias = "backspace")]
    fn connect_backspace<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn backspace_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"backspace".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    backspace_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_backspace(&self) {
        self.emit_by_name::<()>("backspace", &[]);
    }

    /// The ::copy-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to copy the selection to the clipboard.
    ///
    /// The default bindings for this signal are
    /// Ctrl-c and Ctrl-Insert.
    #[doc(alias = "copy-clipboard")]
    fn connect_copy_clipboard<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn copy_clipboard_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"copy-clipboard".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    copy_clipboard_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_copy_clipboard(&self) {
        self.emit_by_name::<()>("copy-clipboard", &[]);
    }

    /// The ::cut-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to cut the selection to the clipboard.
    ///
    /// The default bindings for this signal are
    /// Ctrl-x and Shift-Delete.
    #[doc(alias = "cut-clipboard")]
    fn connect_cut_clipboard<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn cut_clipboard_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"cut-clipboard".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    cut_clipboard_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_cut_clipboard(&self) {
        self.emit_by_name::<()>("cut-clipboard", &[]);
    }

    /// The ::delete-from-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a text deletion.
    ///
    /// If the `type_` is [`DeleteType::Chars`][crate::DeleteType::Chars], GTK+ deletes the selection
    /// if there is one, otherwise it deletes the requested number
    /// of characters.
    ///
    /// The default bindings for this signal are
    /// Delete for deleting a character, Ctrl-Delete for
    /// deleting a word and Ctrl-Backspace for deleting a word
    /// backwords.
    /// ## `type_`
    /// the granularity of the deletion, as a [`DeleteType`][crate::DeleteType]
    /// ## `count`
    /// the number of `type_` units to delete
    #[doc(alias = "delete-from-cursor")]
    fn connect_delete_from_cursor<F: Fn(&Self, DeleteType, i32) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn delete_from_cursor_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, DeleteType, i32) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            type_: ffi::GtkDeleteType,
            count: std::ffi::c_int,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(type_),
                    count,
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"delete-from-cursor".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    delete_from_cursor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_delete_from_cursor(&self, type_: DeleteType, count: i32) {
        self.emit_by_name::<()>("delete-from-cursor", &[&type_, &count]);
    }

    /// The ::extend-selection signal is emitted when the selection needs to be
    /// extended at `location`.
    /// ## `granularity`
    /// the granularity type
    /// ## `location`
    /// the location where to extend the selection
    /// ## `start`
    /// where the selection should start
    /// ## `end`
    /// where the selection should end
    ///
    /// # Returns
    ///
    /// `GDK_EVENT_STOP` to stop other handlers from being invoked for the
    ///  event. `GDK_EVENT_PROPAGATE` to propagate the event further.
    #[doc(alias = "extend-selection")]
    fn connect_extend_selection<
        F: Fn(&Self, TextExtendSelection, &TextIter, &TextIter, &TextIter) -> glib::Propagation
            + 'static,
    >(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn extend_selection_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, TextExtendSelection, &TextIter, &TextIter, &TextIter) -> glib::Propagation
                + 'static,
        >(
            this: *mut ffi::GtkTextView,
            granularity: ffi::GtkTextExtendSelection,
            location: *mut ffi::GtkTextIter,
            start: *mut ffi::GtkTextIter,
            end: *mut ffi::GtkTextIter,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(granularity),
                    &from_glib_borrow(location),
                    &from_glib_borrow(start),
                    &from_glib_borrow(end),
                )
                .into_glib()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"extend-selection".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    extend_selection_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// The ::insert-at-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates the insertion of a
    /// fixed string at the cursor.
    ///
    /// This signal has no default bindings.
    /// ## `string`
    /// the string to insert
    #[doc(alias = "insert-at-cursor")]
    fn connect_insert_at_cursor<F: Fn(&Self, &str) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn insert_at_cursor_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, &str) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            string: *mut std::ffi::c_char,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    &glib::GString::from_glib_borrow(string),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"insert-at-cursor".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    insert_at_cursor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_insert_at_cursor(&self, string: &str) {
        self.emit_by_name::<()>("insert-at-cursor", &[&string]);
    }

    /// The ::insert-emoji signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to present the Emoji chooser for the `text_view`.
    ///
    /// The default bindings for this signal are Ctrl-. and Ctrl-;
    #[doc(alias = "insert-emoji")]
    fn connect_insert_emoji<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn insert_emoji_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"insert-emoji".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    insert_emoji_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_insert_emoji(&self) {
        self.emit_by_name::<()>("insert-emoji", &[]);
    }

    /// The ::move-cursor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates a cursor movement.
    /// If the cursor is not visible in `text_view`, this signal causes
    /// the viewport to be moved instead.
    ///
    /// Applications should not connect to it, but may emit it with
    /// `g_signal_emit_by_name()` if they need to control the cursor
    /// programmatically.
    ///
    /// The default bindings for this signal come in two variants,
    /// the variant with the Shift modifier extends the selection,
    /// the variant without the Shift modifer does not.
    /// There are too many key combinations to list them all here.
    /// - Arrow keys move by individual characters/lines
    /// - Ctrl-arrow key combinations move by words/paragraphs
    /// - Home/End keys move to the ends of the buffer
    /// - PageUp/PageDown keys move vertically by pages
    /// - Ctrl-PageUp/PageDown keys move horizontally by pages
    /// ## `step`
    /// the granularity of the move, as a [`MovementStep`][crate::MovementStep]
    /// ## `count`
    /// the number of `step` units to move
    /// ## `extend_selection`
    /// [`true`] if the move should extend the selection
    #[doc(alias = "move-cursor")]
    fn connect_move_cursor<F: Fn(&Self, MovementStep, i32, bool) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_cursor_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, MovementStep, i32, bool) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            step: ffi::GtkMovementStep,
            count: std::ffi::c_int,
            extend_selection: glib::ffi::gboolean,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(step),
                    count,
                    from_glib(extend_selection),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-cursor".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_cursor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_cursor(&self, step: MovementStep, count: i32, extend_selection: bool) {
        self.emit_by_name::<()>("move-cursor", &[&step, &count, &extend_selection]);
    }

    /// The ::move-viewport signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which can be bound to key combinations to allow the user
    /// to move the viewport, i.e. change what part of the text view
    /// is visible in a containing scrolled window.
    ///
    /// There are no default bindings for this signal.
    /// ## `step`
    /// the granularity of the movement, as a [`ScrollStep`][crate::ScrollStep]
    /// ## `count`
    /// the number of `step` units to move
    #[doc(alias = "move-viewport")]
    fn connect_move_viewport<F: Fn(&Self, ScrollStep, i32) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_viewport_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, ScrollStep, i32) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            step: ffi::GtkScrollStep,
            count: std::ffi::c_int,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(step),
                    count,
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-viewport".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_viewport_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_viewport(&self, step: ScrollStep, count: i32) {
        self.emit_by_name::<()>("move-viewport", &[&step, &count]);
    }

    /// The ::paste-clipboard signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to paste the contents of the clipboard
    /// into the text view.
    ///
    /// The default bindings for this signal are
    /// Ctrl-v and Shift-Insert.
    #[doc(alias = "paste-clipboard")]
    fn connect_paste_clipboard<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn paste_clipboard_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"paste-clipboard".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    paste_clipboard_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_paste_clipboard(&self) {
        self.emit_by_name::<()>("paste-clipboard", &[]);
    }

    /// The ::populate-popup signal gets emitted before showing the
    /// context menu of the text view.
    ///
    /// If you need to add items to the context menu, connect
    /// to this signal and append your items to the `popup`, which
    /// will be a [`Menu`][crate::Menu] in this case.
    ///
    /// If [`populate-all`][struct@crate::TextView#populate-all] is [`true`], this signal will
    /// also be emitted to populate touch popups. In this case,
    /// `popup` will be a different container, e.g. a [`Toolbar`][crate::Toolbar].
    ///
    /// The signal handler should not make assumptions about the
    /// type of `widget`, but check whether `popup` is a [`Menu`][crate::Menu]
    /// or [`Toolbar`][crate::Toolbar] or another kind of container.
    /// ## `popup`
    /// the container that is being populated
    #[doc(alias = "populate-popup")]
    fn connect_populate_popup<F: Fn(&Self, &Widget) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn populate_popup_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, &Widget) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            popup: *mut ffi::GtkWidget,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    &from_glib_borrow(popup),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"populate-popup".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    populate_popup_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// If an input method is used, the typed text will not immediately
    /// be committed to the buffer. So if you are interested in the text,
    /// connect to this signal.
    ///
    /// This signal is only emitted if the text at the given position
    /// is actually editable.
    /// ## `preedit`
    /// the current preedit string
    #[doc(alias = "preedit-changed")]
    fn connect_preedit_changed<F: Fn(&Self, &str) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn preedit_changed_trampoline<
            P: IsA<TextView>,
            F: Fn(&P, &str) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            preedit: *mut std::ffi::c_char,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    &glib::GString::from_glib_borrow(preedit),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"preedit-changed".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    preedit_changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_preedit_changed(&self, preedit: &str) {
        self.emit_by_name::<()>("preedit-changed", &[&preedit]);
    }

    /// The ::select-all signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to select or unselect the complete
    /// contents of the text view.
    ///
    /// The default bindings for this signal are Ctrl-a and Ctrl-/
    /// for selecting and Shift-Ctrl-a and Ctrl-\ for unselecting.
    /// ## `select`
    /// [`true`] to select, [`false`] to unselect
    #[doc(alias = "select-all")]
    fn connect_select_all<F: Fn(&Self, bool) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn select_all_trampoline<P: IsA<TextView>, F: Fn(&P, bool) + 'static>(
            this: *mut ffi::GtkTextView,
            select: glib::ffi::gboolean,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    TextView::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(select),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"select-all".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    select_all_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_select_all(&self, select: bool) {
        self.emit_by_name::<()>("select-all", &[&select]);
    }

    /// The ::set-anchor signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when the user initiates setting the "anchor"
    /// mark. The "anchor" mark gets placed at the same position as the
    /// "insert" mark.
    ///
    /// This signal has no default bindings.
    #[doc(alias = "set-anchor")]
    fn connect_set_anchor<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn set_anchor_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"set-anchor".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    set_anchor_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_set_anchor(&self) {
        self.emit_by_name::<()>("set-anchor", &[]);
    }

    /// The ::toggle-cursor-visible signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to toggle the [`cursor-visible`][struct@crate::TextView#cursor-visible]
    /// property.
    ///
    /// The default binding for this signal is F7.
    #[doc(alias = "toggle-cursor-visible")]
    fn connect_toggle_cursor_visible<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn toggle_cursor_visible_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"toggle-cursor-visible".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    toggle_cursor_visible_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_toggle_cursor_visible(&self) {
        self.emit_by_name::<()>("toggle-cursor-visible", &[]);
    }

    /// The ::toggle-overwrite signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to toggle the overwrite mode of the text view.
    ///
    /// The default bindings for this signal is Insert.
    #[doc(alias = "toggle-overwrite")]
    fn connect_toggle_overwrite<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn toggle_overwrite_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"toggle-overwrite".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    toggle_overwrite_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_toggle_overwrite(&self) {
        self.emit_by_name::<()>("toggle-overwrite", &[]);
    }

    #[doc(alias = "accepts-tab")]
    fn connect_accepts_tab_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_accepts_tab_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::accepts-tab".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_accepts_tab_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "bottom-margin")]
    fn connect_bottom_margin_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_bottom_margin_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::bottom-margin".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_bottom_margin_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "buffer")]
    fn connect_buffer_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_buffer_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::buffer".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_buffer_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "cursor-visible")]
    fn connect_cursor_visible_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_cursor_visible_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::cursor-visible".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_cursor_visible_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "editable")]
    fn connect_editable_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_editable_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::editable".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_editable_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "im-module")]
    fn connect_im_module_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_im_module_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::im-module".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_im_module_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "indent")]
    fn connect_indent_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_indent_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::indent".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_indent_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "input-hints")]
    fn connect_input_hints_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_input_hints_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::input-hints".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_input_hints_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "input-purpose")]
    fn connect_input_purpose_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_input_purpose_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::input-purpose".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_input_purpose_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "justification")]
    fn connect_justification_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_justification_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::justification".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_justification_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "left-margin")]
    fn connect_left_margin_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_left_margin_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::left-margin".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_left_margin_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "monospace")]
    fn connect_monospace_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_monospace_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::monospace".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_monospace_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "overwrite")]
    fn connect_overwrite_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_overwrite_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::overwrite".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_overwrite_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "pixels-above-lines")]
    fn connect_pixels_above_lines_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_pixels_above_lines_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::pixels-above-lines".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_pixels_above_lines_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "pixels-below-lines")]
    fn connect_pixels_below_lines_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_pixels_below_lines_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::pixels-below-lines".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_pixels_below_lines_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "pixels-inside-wrap")]
    fn connect_pixels_inside_wrap_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_pixels_inside_wrap_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::pixels-inside-wrap".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_pixels_inside_wrap_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "populate-all")]
    fn connect_populate_all_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_populate_all_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::populate-all".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_populate_all_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "right-margin")]
    fn connect_right_margin_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_right_margin_trampoline<
            P: IsA<TextView>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::right-margin".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_right_margin_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "tabs")]
    fn connect_tabs_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_tabs_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::tabs".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_tabs_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "top-margin")]
    fn connect_top_margin_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_top_margin_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::top-margin".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_top_margin_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "wrap-mode")]
    fn connect_wrap_mode_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_wrap_mode_trampoline<P: IsA<TextView>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkTextView,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(TextView::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::wrap-mode".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_wrap_mode_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<TextView>> TextViewExt for O {}