Struct gtk4::ListBox

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

ListBox is a vertical list.

A ListBox only contains ListBoxRow children. These rows can by dynamically sorted and filtered, and headers can be added dynamically depending on the row content. It also allows keyboard and mouse navigation and selection like a typical list.

Using ListBox is often an alternative to TreeView, especially when the list contents has a more complicated layout than what is allowed by a CellRenderer, or when the contents is interactive (i.e. has a button in it).

Although a ListBox must have only ListBoxRow children, you can add any kind of widget to it via prepend(), append() and insert() and a ListBoxRow widget will automatically be inserted between the list and the widget.

GtkListBoxRows can be marked as activatable or selectable. If a row is activatable, signal::ListBox::row-activated will be emitted for it when the user tries to activate it. If it is selectable, the row will be marked as selected when the user tries to select it.

GtkListBox as GtkBuildable

The ListBox implementation of the Buildable interface supports setting a child as the placeholder by specifying “placeholder” as the “type” attribute of a element. See set_placeholder() for info.

CSS nodes

⚠️ The following code is in plain ⚠️

list[.separators][.rich-list][.navigation-sidebar]
╰── row[.activatable]

ListBox uses a single CSS node named list. It may carry the .separators style class, when the property::ListBox::show-separators property is set. Each ListBoxRow uses a single CSS node named row. The row nodes get the .activatable style class added when appropriate.

The main list node may also carry style classes to select the style of list presentation: .rich-list, .navigation-sidebar or .data-table.

Accessibility

ListBox uses the AccessibleRole::List role and ListBoxRow uses the AccessibleRole::ListItem role.

Implements

WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, WidgetExtManual, AccessibleExtManual

Implementations

impl ListBox

pub fn new() -> ListBox

Creates a new ListBox container.

Returns

a new ListBox

pub fn builder() -> ListBoxBuilder

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

This method returns an instance of ListBoxBuilder which can be used to create ListBox objects.

pub fn append(&self, child: &impl IsA<Widget>)

Append a widget to the list.

If a sort function is set, the widget will actually be inserted at the calculated position.

child

the Widget to add

pub fn bind_model<P: Fn(&Object) -> Widget + 'static>( &self, model: Option<&impl IsA<ListModel>>, create_widget_func: P )

Binds @model to @self.

If @self was already bound to a model, that previous binding is destroyed.

The contents of @self are cleared and then filled with widgets that represent items from @model. @self is updated whenever @model changes. If @model is None, @self is left empty.

It is undefined to add or remove widgets directly (for example, with insert()) while @self is bound to a model.

Note that using a model is incompatible with the filtering and sorting functionality in ListBox. When using a model, filtering and sorting should be implemented by the model.

model

the GListModel to be bound to @self

create_widget_func

a function that creates widgets for items or None in case you also passed None as @model

pub fn drag_highlight_row(&self, row: &impl IsA<ListBoxRow>)

Add a drag highlight to a row.

This is a helper function for implementing DnD onto a ListBox. The passed in @row will be highlighted by setting the StateFlags::DROP_ACTIVE state and any previously highlighted row will be unhighlighted.

The row will also be unhighlighted when the widget gets a drag leave event.

row

a ListBoxRow

pub fn drag_unhighlight_row(&self)

If a row has previously been highlighted via gtk_list_box_drag_highlight_row(), it will have the highlight removed.

pub fn activates_on_single_click(&self) -> bool

Returns whether rows activate on single clicks.

Returns

true if rows are activated on single click, false otherwise

pub fn adjustment(&self) -> Option<Adjustment>

Gets the adjustment (if any) that the widget uses to for vertical scrolling.

Returns

the adjustment

pub fn row_at_index(&self, index_: i32) -> Option<ListBoxRow>

Gets the n-th child in the list (not counting headers).

If @index_ is negative or larger than the number of items in the list, None is returned.

index_

the index of the row

Returns

the child Widget

pub fn row_at_y(&self, y: i32) -> Option<ListBoxRow>

Gets the row at the @y position.

y

position

Returns

the row

pub fn selected_row(&self) -> Option<ListBoxRow>

Gets the selected row, or None if no rows are selected.

Note that the box may allow multiple selection, in which case you should use selected_foreach() to find all selected rows.

Returns

the selected row

pub fn selected_rows(&self) -> Vec<ListBoxRow>

Creates a list of all selected children.

Returns

A GList containing the Widget for each selected child. Free with g_list_free() when done.

pub fn selection_mode(&self) -> SelectionMode

Gets the selection mode of the listbox.

Returns

a SelectionMode

pub fn shows_separators(&self) -> bool

Returns whether the list box should show separators between rows.

Returns

true if the list box shows separators

pub fn insert(&self, child: &impl IsA<Widget>, position: i32)

Insert the @child into the @self at @position.

If a sort function is set, the widget will actually be inserted at the calculated position.

If @position is -1, or larger than the total number of items in the @self, then the @child will be appended to the end.

child

the Widget to add

position

the position to insert @child in

pub fn invalidate_filter(&self)

Update the filtering for all rows.

Call this when result of the filter function on the @self is changed due to an external factor. For instance, this would be used if the filter function just looked for a specific search string and the entry with the search string has changed.

pub fn invalidate_headers(&self)

Update the separators for all rows.

Call this when result of the header function on the @self is changed due to an external factor.

pub fn invalidate_sort(&self)

Update the sorting for all rows.

Call this when result of the sort function on the @self is changed due to an external factor.

pub fn prepend(&self, child: &impl IsA<Widget>)

Prepend a widget to the list.

If a sort function is set, the widget will actually be inserted at the calculated position.

child

the Widget to add

pub fn remove(&self, child: &impl IsA<Widget>)

Removes a child from @self.

child

the child to remove

pub fn select_all(&self)

Select all children of @self, if the selection mode allows it.

pub fn select_row(&self, row: Option<&impl IsA<ListBoxRow>>)

Make @row the currently selected row.

row

The row to select

pub fn selected_foreach<P: FnMut(&ListBox, &ListBoxRow)>(&self, func: P)

Calls a function for each selected child.

Note that the selection cannot be modified from within this function.

func

the function to call for each selected child

pub fn set_activate_on_single_click(&self, single: bool)

If @single is true, rows will be activated when you click on them, otherwise you need to double-click.

single

a boolean

pub fn set_adjustment(&self, adjustment: Option<&impl IsA<Adjustment>>)

Sets the adjustment (if any) that the widget uses to for vertical scrolling.

For instance, this is used to get the page size for PageUp/Down key handling.

In the normal case when the @self is packed inside a ScrolledWindow the adjustment from that will be picked up automatically, so there is no need to manually do that.

adjustment

the adjustment

pub fn set_filter_func<P: Fn(&ListBoxRow) -> bool + 'static>( &self, filter_func: P )

By setting a filter function on the @self one can decide dynamically which of the rows to show.

For instance, to implement a search function on a list that filters the original list to only show the matching rows.

The @filter_func will be called for each row after the call, and it will continue to be called each time a row changes (via ListBoxRowExt::changed()) or when invalidate_filter() is called.

Note that using a filter function is incompatible with using a model (see bind_model()).

filter_func

callback that lets you filter which rows to show

pub fn set_header_func<P: Fn(&ListBoxRow, Option<&ListBoxRow>) + 'static>( &self, update_header: P )

Sets a header function.

By setting a header function on the @self one can dynamically add headers in front of rows, depending on the contents of the row and its position in the list.

For instance, one could use it to add headers in front of the first item of a new kind, in a list sorted by the kind.

The @update_header can look at the current header widget using ListBoxRowExt::header() and either update the state of the widget as needed, or set a new one using ListBoxRowExt::set_header(). If no header is needed, set the header to None.

Note that you may get many calls @update_header to this for a particular row when e.g. changing things that don’t affect the header. In this case it is important for performance to not blindly replace an existing header with an identical one.

The @update_header function will be called for each row after the call, and it will continue to be called each time a row changes (via ListBoxRowExt::changed()) and when the row before changes (either by ListBoxRowExt::changed() on the previous row, or when the previous row becomes a different row). It is also called for all rows when invalidate_headers() is called.

update_header

callback that lets you add row headers

pub fn set_placeholder(&self, placeholder: Option<&impl IsA<Widget>>)

Sets the placeholder widget that is shown in the list when it doesn’t display any visible children.

placeholder

a Widget

pub fn set_selection_mode(&self, mode: SelectionMode)

Sets how selection works in the listbox.

mode

The SelectionMode

pub fn set_show_separators(&self, show_separators: bool)

Sets whether the list box should show separators between rows.

show_separators

true to show separators

pub fn unselect_all(&self)

Unselect all children of @self, if the selection mode allows it.

pub fn unselect_row(&self, row: &impl IsA<ListBoxRow>)

Unselects a single row of @self, if the selection mode allows it.

row

the row to unselected

pub fn accepts_unpaired_release(&self) -> bool

Whether to accept unpaired release events.

pub fn set_accept_unpaired_release(&self, accept_unpaired_release: bool)

Whether to accept unpaired release events.

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

pub fn emit_activate_cursor_row(&self)

pub fn connect_move_cursor<F: Fn(&Self, MovementStep, i32, bool, bool) + 'static>( &self, f: F ) -> SignalHandlerId

pub fn emit_move_cursor( &self, object: MovementStep, p0: i32, p1: bool, p2: bool )

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

Emitted when a row has been activated by the user.

row

the activated row

pub fn connect_row_selected<F: Fn(&Self, Option<&ListBoxRow>) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when a new row is selected, or (with a None @row) when the selection is cleared.

When the @box_ is using SelectionMode::Multiple, this signal will not give you the full picture of selection changes, and you should use the signal::ListBox::selected-rows-changed signal instead.

row

the selected row

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

Emitted to select all children of the box, if the selection mode permits it.

This is a keybinding signal.

The default binding for this signal is Ctrl-a.

pub fn emit_select_all(&self)

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

Emitted when the set of selected rows changes.

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

pub fn emit_toggle_cursor_row(&self)

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

Emitted to unselect all children of the box, if the selection mode permits it.

This is a keybinding signal.

The default binding for this signal is Ctrl-Shift-a.

pub fn emit_unselect_all(&self)

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

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

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

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

impl ListBox

pub fn unbind_model(&self)

pub fn unset_filter_func(&self)

pub fn unset_header_func(&self)

pub fn set_sort_func<P: Fn(&ListBoxRow, &ListBoxRow) -> Ordering + 'static>( &self, sort_func: P )

Sets a sort function.

By setting a sort function on the @self one can dynamically reorder the rows of the list, based on the contents of the rows.

The @sort_func will be called for each row after the call, and will continue to be called each time a row changes (via ListBoxRowExt::changed()) and when invalidate_sort() is called.

Note that using a sort function is incompatible with using a model (see bind_model()).

sort_func

the sort function

pub fn unset_sort_func(&self)

Trait Implementations

impl Clone for ListBox

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 ListBox

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

Formats the value using the given formatter.

impl Default for ListBox

fn default() -> Self

Returns the “default value” for a type.

impl Display for ListBox

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

Formats the value using the given formatter.

impl Hash for ListBox

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 Ord for ListBox

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 ListBox

type Parent = Widget

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

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 ListBox

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 ListBox

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for ListBox

impl IsA<Accessible> for ListBox

impl IsA<Buildable> for ListBox

impl IsA<ConstraintTarget> for ListBox

impl IsA<Widget> for ListBox