Trait ComboBoxExt 

pub trait ComboBoxExt:
    IsA<ComboBox>
    + Sealed
    + 'static {
    // Provided methods
    fn active_id(&self) -> Option<GString> { ... }
    fn active_iter(&self) -> Option<TreeIter> { ... }
    fn button_sensitivity(&self) -> SensitivityType { ... }
    fn column_span_column(&self) -> i32 { ... }
    fn entry_text_column(&self) -> i32 { ... }
    fn has_entry(&self) -> bool { ... }
    fn id_column(&self) -> i32 { ... }
    fn model(&self) -> Option<TreeModel> { ... }
    fn popup_accessible(&self) -> Option<Object> { ... }
    fn is_popup_fixed_width(&self) -> bool { ... }
    fn row_span_column(&self) -> i32 { ... }
    fn wrap_width(&self) -> i32 { ... }
    fn popdown(&self) { ... }
    fn popup(&self) { ... }
    fn popup_for_device(&self, device: &Device) { ... }
    fn set_active_id(&self, active_id: Option<&str>) -> bool { ... }
    fn set_active_iter(&self, iter: Option<&TreeIter>) { ... }
    fn set_button_sensitivity(&self, sensitivity: SensitivityType) { ... }
    fn set_column_span_column(&self, column_span: i32) { ... }
    fn set_entry_text_column(&self, text_column: i32) { ... }
    fn set_id_column(&self, id_column: i32) { ... }
    fn set_model(&self, model: Option<&impl IsA<TreeModel>>) { ... }
    fn set_popup_fixed_width(&self, fixed: bool) { ... }
    fn set_row_separator_func<P: Fn(&TreeModel, &TreeIter) -> bool + 'static>(
        &self,
        func: P,
    ) { ... }
    fn set_row_span_column(&self, row_span: i32) { ... }
    fn set_wrap_width(&self, width: i32) { ... }
    fn cell_area(&self) -> Option<CellArea> { ... }
    fn has_frame(&self) -> bool { ... }
    fn set_has_frame(&self, has_frame: bool) { ... }
    fn is_popup_shown(&self) -> bool { ... }
    fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId { ... }
    fn connect_format_entry_text<F: Fn(&Self, &str) -> String + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_move_active<F: Fn(&Self, ScrollType) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn emit_move_active(&self, scroll_type: ScrollType) { ... }
    fn connect_popdown<F: Fn(&Self) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn emit_popdown(&self) -> bool { ... }
    fn connect_popup<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId { ... }
    fn emit_popup(&self) { ... }
    fn connect_active_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_active_id_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_button_sensitivity_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_column_span_column_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_entry_text_column_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_has_frame_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_id_column_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_model_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_popup_fixed_width_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_popup_shown_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_row_span_column_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
    fn connect_wrap_width_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId { ... }
}

Trait containing all ComboBox methods.

Implementors

AppChooserButton, ComboBoxText, ComboBox

Provided Methods

fn active_id(&self) -> Option<GString>

Returns the ID of the active row of self. This value is taken from the active row and the column specified by the id-column property of self (see set_id_column()).

The returned value is an interned string which means that you can compare the pointer by value to other interned strings and that you must not free it.

If the id-column property of self is not set, or if no row is active, or if the active row has a None ID value, then None is returned.

Returns

the ID of the active row, or None

fn active_iter(&self) -> Option<TreeIter>

Sets iter to point to the currently active item, if any item is active. Otherwise, iter is left unchanged.

Returns

true if iter was set, false otherwise

iter

A TreeIter

fn button_sensitivity(&self) -> SensitivityType

Returns whether the combo box sets the dropdown button sensitive or not when there are no items in the model.

Returns

SensitivityType::On if the dropdown button is sensitive when the model is empty, SensitivityType::Off if the button is always insensitive or SensitivityType::Auto if it is only sensitive as long as the model has one item to be selected.

fn column_span_column(&self) -> i32

Returns the column with column span information for self.

Returns

the column span column.

fn entry_text_column(&self) -> i32

Returns the column which self is using to get the strings from to display in the internal entry.

Returns

A column in the data source model of self.

fn has_entry(&self) -> bool

Returns whether the combo box has an entry.

Returns

whether there is an entry in self.

fn id_column(&self) -> i32

Returns the column which self is using to get string IDs for values from.

Returns

A column in the data source model of self.

fn model(&self) -> Option<TreeModel>

Returns the TreeModel which is acting as data source for self.

Returns

A TreeModel which was passed during construction.

fn popup_accessible(&self) -> Option<Object>

Gets the accessible object corresponding to the combo box’s popup.

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

Returns

the accessible object corresponding to the combo box’s popup.

fn is_popup_fixed_width(&self) -> bool

Gets whether the popup uses a fixed width matching the allocated width of the combo box.

Returns

true if the popup uses a fixed width

fn row_span_column(&self) -> i32

Returns the column with row span information for self.

Returns

the row span column.

fn wrap_width(&self) -> i32

Returns the wrap width which is used to determine the number of columns for the popup menu. If the wrap width is larger than 1, the combo box is in table mode.

Returns

the wrap width.

fn popdown(&self)

Hides the menu or dropdown list of self.

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

fn popup(&self)

Pops up the menu or dropdown list of self.

This function is mostly intended for use by accessibility technologies; applications should have little use for it.

Before calling this, self must be mapped, or nothing will happen.

fn popup_for_device(&self, device: &Device)

Pops up the menu or dropdown list of self, the popup window will be grabbed so only device and its associated pointer/keyboard are the only GdkDevices able to send events to it.

device

a gdk::Device

fn set_active_id(&self, active_id: Option<&str>) -> bool

Changes the active row of self to the one that has an ID equal to active_id, or unsets the active row if active_id is None. Rows having a None ID string cannot be made active by this function.

If the id-column property of self is unset or if no row has the given ID then the function does nothing and returns false.

active_id

the ID of the row to select, or None

Returns

true if a row with a matching ID was found. If a None active_id was given to unset the active row, the function always returns true.

fn set_active_iter(&self, iter: Option<&TreeIter>)

Sets the current active item to be the one referenced by iter, or unsets the active item if iter is None.

iter

The TreeIter, or None

fn set_button_sensitivity(&self, sensitivity: SensitivityType)

Sets whether the dropdown button of the combo box should be always sensitive (SensitivityType::On), never sensitive (SensitivityType::Off) or only if there is at least one item to display (SensitivityType::Auto).

sensitivity

specify the sensitivity of the dropdown button

fn set_column_span_column(&self, column_span: i32)

Sets the column with column span information for self to be column_span. The column span column contains integers which indicate how many columns an item should span.

column_span

A column in the model passed during construction

fn set_entry_text_column(&self, text_column: i32)

Sets the model column which self should use to get strings from to be text_column. The column text_column in the model of self must be of type G_TYPE_STRING.

This is only relevant if self has been created with has-entry as true.

text_column

A column in model to get the strings from for the internal entry

fn set_id_column(&self, id_column: i32)

Sets the model column which self should use to get string IDs for values from. The column id_column in the model of self must be of type G_TYPE_STRING.

id_column

A column in model to get string IDs for values from

fn set_model(&self, model: Option<&impl IsA<TreeModel>>)

Sets the model used by self to be model. Will unset a previously set model (if applicable). If model is None, then it will unset the model.

Note that this function does not clear the cell renderers, you have to call CellLayoutExt::clear() yourself if you need to set up different cell renderers for the new model.

model

A TreeModel

fn set_popup_fixed_width(&self, fixed: bool)

Specifies whether the popup’s width should be a fixed width matching the allocated width of the combo box.

fixed

whether to use a fixed popup width

fn set_row_separator_func<P: Fn(&TreeModel, &TreeIter) -> bool + 'static>( &self, func: P, )

Sets the row separator function, which is used to determine whether a row should be drawn as a separator. If the row separator function is None, no separators are drawn. This is the default value.

func

a GtkTreeViewRowSeparatorFunc

fn set_row_span_column(&self, row_span: i32)

Sets the column with row span information for self to be row_span. The row span column contains integers which indicate how many rows an item should span.

row_span

A column in the model passed during construction.

fn set_wrap_width(&self, width: i32)

Sets the wrap width of self to be width. The wrap width is basically the preferred number of columns when you want the popup to be layed out in a table.

width

Preferred number of columns

fn cell_area(&self) -> Option<CellArea>

The CellArea used to layout cell renderers for this combo box.

If no area is specified when creating the combo box with ComboBox::with_area() a horizontally oriented CellAreaBox will be used.

fn has_frame(&self) -> bool

The has-frame property controls whether a frame is drawn around the entry.

fn set_has_frame(&self, has_frame: bool)

The has-frame property controls whether a frame is drawn around the entry.

fn is_popup_shown(&self) -> bool

Whether the combo boxes dropdown is popped up. Note that this property is mainly useful, because it allows you to connect to notify::popup-shown.

fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

The changed signal is emitted when the active item is changed. The can be due to the user selecting a different item from the list, or due to a call to set_active_iter(). It will also be emitted while typing into the entry of a combo box with an entry.

fn connect_format_entry_text<F: Fn(&Self, &str) -> String + 'static>( &self, f: F, ) -> SignalHandlerId

For combo boxes that are created with an entry (See GtkComboBox:has-entry).

A signal which allows you to change how the text displayed in a combo box’s entry is displayed.

Connect a signal handler which returns an allocated string representing path. That string will then be used to set the text in the combo box’s entry. The default signal handler uses the text from the GtkComboBox::entry-text-column model column.

Here’s an example signal handler which fetches data from the model and displays it in the entry.

⚠️ The following code is in C ⚠️

static gchar*
format_entry_text_callback (GtkComboBox *combo,
                            const gchar *path,
                            gpointer     user_data)
{
  GtkTreeIter iter;
  GtkTreeModel model;
  gdouble      value;

  model = gtk_combo_box_get_model (combo);

  gtk_tree_model_get_iter_from_string (model, &iter, path);
  gtk_tree_model_get (model, &iter,
                      THE_DOUBLE_VALUE_COLUMN, &value,
                      -1);

  return g_strdup_printf ("%g", value);
}

path

the GtkTreePath string from the combo box’s current model to format text for

Returns

a newly allocated string representing path for the current GtkComboBox model.

fn connect_move_active<F: Fn(&Self, ScrollType) + 'static>( &self, f: F, ) -> SignalHandlerId

The ::move-active signal is a [keybinding signal][GtkBindingSignal] which gets emitted to move the active selection.

scroll_type

a ScrollType

fn emit_move_active(&self, scroll_type: ScrollType)

fn connect_popdown<F: Fn(&Self) -> bool + 'static>( &self, f: F, ) -> SignalHandlerId

The ::popdown signal is a [keybinding signal][GtkBindingSignal] which gets emitted to popdown the combo box list.

The default bindings for this signal are Alt+Up and Escape.

fn emit_popdown(&self) -> bool

fn connect_popup<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

The ::popup signal is a [keybinding signal][GtkBindingSignal] which gets emitted to popup the combo box list.

The default binding for this signal is Alt+Down.

fn emit_popup(&self)

fn connect_active_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

fn connect_active_id_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_button_sensitivity_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_column_span_column_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_entry_text_column_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_has_frame_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_id_column_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_model_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId

fn connect_popup_fixed_width_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_popup_shown_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_row_span_column_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

fn connect_wrap_width_notify<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<O: IsA<ComboBox>> ComboBoxExt for O