Struct gtk4::TreeView

#[repr(transparent)]
pub struct TreeView { /* private fields */ }

Use ListView for lists, and ColumnView for tabular lists A widget for displaying both trees and lists

Widget that displays any object that implements the TreeModel interface.

Please refer to the tree widget conceptual overview for an overview of all the objects and data types related to the tree widget and how they work together.

Coordinate systems in GtkTreeView API

Several different coordinate systems are exposed in the TreeView API. These are:

• Widget coordinates: Coordinates relative to the widget (usually widget->window).

• Bin window coordinates: Coordinates relative to the window that GtkTreeView renders to.

• Tree coordinates: Coordinates relative to the entire scrollable area of GtkTreeView. These coordinates start at (0, 0) for row 0 of the tree.

Several functions are available for converting between the different coordinate systems. The most common translations are between widget and bin window coordinates and between bin window and tree coordinates. For the former you can use TreeViewExt::convert_widget_to_bin_window_coords() (and vice versa), for the latter TreeViewExt::convert_bin_window_to_tree_coords() (and vice versa).

TreeView as Buildable

The TreeView implementation of the Buildable interface accepts TreeViewColumn objects as <child> elements and exposes the internal TreeSelection in UI definitions.

An example of a UI definition fragment with TreeView:

<object class="GtkTreeView" id="treeview">
  <property name="model">liststore1</property>
  <child>
    <object class="GtkTreeViewColumn" id="test-column">
      <property name="title">Test</property>
      <child>
        <object class="GtkCellRendererText" id="test-renderer"/>
        <attributes>
          <attribute name="text">1</attribute>
        </attributes>
      </child>
    </object>
  </child>
  <child internal-child="selection">
    <object class="GtkTreeSelection" id="selection">
      <signal name="changed" handler="on_treeview_selection_changed"/>
    </object>
  </child>
</object>

CSS nodes

treeview.view
├── header
│   ├── button
│   │   ╰── [sort-indicator]
┊   ┊
│   ╰── button
│       ╰── [sort-indicator]
│
├── [rubberband]
╰── [dndtarget]

TreeView has a main CSS node with name treeview and style class .view. It has a subnode with name header, which is the parent for all the column header widgets’ CSS nodes.

Each column header consists of a button, which among other content, has a child with name sort-indicator, which carries the .ascending or .descending style classes when the column header should show a sort indicator. The CSS is expected to provide a suitable image using the -gtk-icon-source property.

For rubberband selection, a subnode with name rubberband is used.

For the drop target location during DND, a subnode with name dndtarget is used.

Properties

activate-on-single-click

The activate-on-single-click property specifies whether the “row-activated” signal will be emitted after a single click.

Readable | Writeable

enable-grid-lines

Readable | Writeable

enable-search

Readable | Writeable

enable-tree-lines

Readable | Writeable

expander-column

Readable | Writeable

fixed-height-mode

Setting the ::fixed-height-mode property to true speeds up TreeView by assuming that all rows have the same height. Only enable this option if all rows are the same height. Please see gtk_tree_view_set_fixed_height_mode() for more information on this option.

Readable | Writeable

headers-clickable

Readable | Writeable

headers-visible

Readable | Writeable

hover-expand

Enables or disables the hover expansion mode of @tree_view. Hover expansion makes rows expand or collapse if the pointer moves over them.

This mode is primarily intended for treeviews in popups, e.g. in ComboBox or EntryCompletion.

Readable | Writeable

hover-selection

Enables or disables the hover selection mode of @tree_view. Hover selection makes the selected row follow the pointer. Currently, this works only for the selection modes SelectionMode::Single and SelectionMode::Browse.

This mode is primarily intended for treeviews in popups, e.g. in ComboBox or EntryCompletion.

Readable | Writeable

level-indentation

Extra indentation for each level.

Readable | Writeable

model

Readable | Writeable

reorderable

Readable | Writeable

rubber-banding

Readable | Writeable

search-column

Readable | Writeable

show-expanders

true if the view has expanders.

Readable | Writeable

tooltip-column

Readable | Writeable

Widget

can-focus

Whether the widget or any of its descendents can accept the input focus.

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

can-target

Whether the widget can receive pointer events.

Readable | Writeable

css-classes

A list of css classes applied to this widget.

Readable | Writeable

css-name

The name of this widget in the CSS tree.

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable | Construct Only

cursor

The cursor used by @widget.

Readable | Writeable

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.

Readable | Writeable

focusable

Whether this widget itself will accept the input focus.

Readable | Writeable

halign

How to distribute horizontal space if widget gets extra space.

Readable | Writeable

has-default

Whether the widget is the default widget.

Readable

has-focus

Whether the widget has the input focus.

Readable

has-tooltip

Enables or disables the emission of the ::query-tooltip signal on @widget.

A value of true indicates that @widget can have a tooltip, in this case the widget will be queried using query-tooltip to determine whether it will provide a tooltip or not.

Readable | Writeable

height-request

Override for height request of the widget.

If this is -1, the natural request will be used.

Readable | Writeable

hexpand

Whether to expand horizontally.

Readable | Writeable

hexpand-set

Whether to use the hexpand property.

Readable | Writeable

layout-manager

The LayoutManager instance to use to compute the preferred size of the widget, and allocate its children.

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

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() for example.

Readable | Writeable

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() for example.

Readable | Writeable

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() for example.

Readable | Writeable

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() for example.

Readable | Writeable

name

The name of the widget.

Readable | Writeable

opacity

The requested opacity of the widget.

Readable | Writeable

overflow

How content outside the widget’s content area is treated.

This property is meant to be set by widget implementations, typically in their instance init function.

Readable | Writeable

parent

The parent widget of this widget.

Readable

receives-default

Whether the widget will receive the default action when it is focused.

Readable | Writeable

root

The Root widget of the widget tree containing this widget.

This will be None if the widget is not contained in a root widget.

Readable

scale-factor

The scale factor of the widget.

Readable

sensitive

Whether the widget responds to input.

Readable | Writeable

tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

Also see 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 will automatically be set to true and there will be taken care of query-tooltip in the default signal handler.

Note that if both tooltip-text and tooltip-markup are set, the last one wins.

Readable | Writeable

tooltip-text

Sets the text of tooltip to be the given string.

Also see 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 will automatically be set to true and there will be taken care of query-tooltip in the default signal handler.

Note that if both tooltip-text and tooltip-markup are set, the last one wins.

Readable | Writeable

valign

How to distribute vertical space if widget gets extra space.

Readable | Writeable

vexpand

Whether to expand vertically.

Readable | Writeable

vexpand-set

Whether to use the vexpand property.

Readable | Writeable

visible

Whether the widget is visible.

Readable | Writeable

width-request

Override for width request of the widget.

If this is -1, the natural request will be used.

Readable | Writeable

Accessible

accessible-role

The accessible role of the given Accessible implementation.

The accessible role cannot be changed once set.

Readable | Writeable

Scrollable

hadjustment

Horizontal Adjustment of the scrollable widget.

This adjustment is shared between the scrollable widget and its parent.

Readable | Writeable | Construct

hscroll-policy

Determines when horizontal scrolling should start.

Readable | Writeable

vadjustment

Vertical Adjustment of the scrollable widget.

This adjustment is shared between the scrollable widget and its parent.

Readable | Writeable | Construct

vscroll-policy

Determines when vertical scrolling should start.

Readable | Writeable

Signals

columns-changed

The number of columns of the treeview has changed.

cursor-changed

The position of the cursor (focused cell) has changed.

expand-collapse-cursor-row

Action

move-cursor

The TreeView::move-cursor signal is a [keybinding signal]SignalAction which gets emitted when the user presses one of the cursor keys.

Applications should not connect to it, but may emit it with g_signal_emit_by_name() if they need to control the cursor programmatically. In contrast to gtk_tree_view_set_cursor() and gtk_tree_view_set_cursor_on_cell() when moving horizontally TreeView::move-cursor does not reset the current selection.

Action

row-activated

The “row-activated” signal is emitted when the method [method@Gtk.TreeView.row_activated] is called.

This signal is emitted when the user double-clicks a treeview row with the activate-on-single-click property set to false, or when the user single-clicks a row when that property set to true.

This signal is also emitted when a non-editable row is selected and one of the keys: Space, Shift+Space, Return or Enter is pressed.

For selection handling refer to the tree widget conceptual overview as well as TreeSelection.

Action

row-collapsed

The given row has been collapsed (child nodes are hidden).

row-expanded

The given row has been expanded (child nodes are shown).

select-all

Action

select-cursor-parent

Action

select-cursor-row

Action

start-interactive-search

Action

test-collapse-row

The given row is about to be collapsed (hide its children nodes). Use this signal if you need to control the collapsibility of individual rows.

test-expand-row

The given row is about to be expanded (show its children nodes). Use this signal if you need to control the expandability of individual rows.

toggle-cursor-row

Action

unselect-all

Action

Widget

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.

direction-changed

Emitted when the text direction of a widget changes.

hide

Emitted when @widget is hidden.

keynav-failed

Emitted if keyboard navigation fails.

See WidgetExt::keynav_failed() for details.

map

Emitted when @widget is going to be mapped.

A widget is mapped when the widget is visible (which is controlled with visible) and all its parents up to the toplevel widget are also visible.

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.

mnemonic-activate

Emitted when a widget is activated via a mnemonic.

The default handler for this signal activates @widget if @group_cycling is false, or just makes @widget grab focus if @group_cycling is true.

move-focus

Emitted when the focus is moved.

Action

query-tooltip

Emitted when the widgets tooltip is about to be shown.

This happens when the has-tooltip property 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

Emitted when @widget is associated with a gdk::Surface.

This means that WidgetExt::realize() has been called or the widget has been mapped (that is, it is going to be drawn).

show

Emitted when @widget is shown.

state-flags-changed

Emitted when the widget state changes.

See WidgetExt::state_flags().

unmap

Emitted when @widget is going to be unmapped.

A widget is unmapped when 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.

unrealize

Emitted when the gdk::Surface associated with @widget is destroyed.

This means that WidgetExt::unrealize() has been called or the widget has been unmapped (that is, it is going to be hidden).

Implements

TreeViewExt, WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, ScrollableExt, TreeViewExtManual, WidgetExtManual, AccessibleExtManual

Implementations

impl TreeView

pub const NONE: Option<&'static TreeView> = None

pub fn new() -> TreeView

Creates a new TreeView widget.

Deprecated since 4.10

Use ListView or ColumnView instead

Returns

A newly created TreeView widget.

pub fn with_model(model: &impl IsA<TreeModel>) -> TreeView

Creates a new TreeView widget with the model initialized to @model.

Deprecated since 4.10

Use ListView or ColumnView instead

model

the model.

Returns

A newly created TreeView widget.

pub fn builder() -> TreeViewBuilder

Creates a new builder-pattern struct instance to construct TreeView objects.

This method returns an instance of TreeViewBuilder which can be used to create TreeView objects.

Trait Implementations

impl Clone for TreeView

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TreeView

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TreeView

fn default() -> Self

Returns the “default value” for a type.

impl Display for TreeView

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HasParamSpec for TreeView

type ParamSpec = ParamSpecObject

type SetValue = TreeView

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, TreeView>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for TreeView

fn hash<H>(&self, state: &mut H)where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: TreeViewImpl> IsSubclassable<T> for TreeView

fn class_init(class: &mut Class<Self>)

Override the virtual methods of this class for the given subclass and do other class initialization.

fn instance_init(instance: &mut InitializingObject<T>)

Instance specific initialization.

impl Ord for TreeView

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for TreeView

type Parent = Widget

impl<OT: ObjectType> PartialEq<OT> for TreeView

fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for TreeView

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for TreeView

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for TreeView

impl IsA<Accessible> for TreeView

impl IsA<Buildable> for TreeView

impl IsA<ConstraintTarget> for TreeView

impl IsA<Scrollable> for TreeView

impl IsA<Widget> for TreeView