Struct gtk4::ListItem[][src]

pub struct ListItem(_);
Expand description

ListItem is used by list widgets to represent items in a GListModel.

The ListItems are managed by the list widget (with its factory) and cannot be created by applications, but they need to be populated by application code. This is done by calling set_child().

ListItems exist in 2 stages:

  1. The unbound stage where the listitem is not currently connected to an item in the list. In that case, the property::ListItem::item property is set to None.

  2. The bound stage where the listitem references an item from the list. The property::ListItem::item property is not None.

Implements

glib::ObjectExt

Implementations

Checks if a list item has been set to be activatable via set_activatable().

Returns

true if the item is activatable

Gets the child previously set via set_child() or None if none was set.

Returns

The child

Gets the model item that associated with self.

If self is unbound, this function returns None.

Returns

The item displayed

Gets the position in the model that self currently displays.

If self is unbound, GTK_INVALID_LIST_POSITION is returned.

Returns

The position of this item

Checks if a list item has been set to be selectable via set_selectable().

Do not confuse this function with is_selected().

Returns

true if the item is selectable

Checks if the item is displayed as selected.

The selected state is maintained by the liste widget and its model and cannot be set otherwise.

Returns

true if the item is selected.

Sets self to be activatable.

If an item is activatable, double-clicking on the item, using the Return key or calling WidgetExt::activate() will activate the item. Activating instructs the containing view to handle activation. ListView for example will be emitting the signal::ListView::activate signal.

By default, list items are activatable.

activatable

if the item should be activatable

Sets the child to be used for this listitem.

This function is typically called by applications when setting up a listitem so that the widget can be reused when binding it multiple times.

child

The list item’s child or None to unset

Sets self to be selectable.

If an item is selectable, clicking on the item or using the keyboard will try to select or unselect the item. If this succeeds is up to the model to determine, as it is managing the selected state.

Note that this means that making an item non-selectable has no influence on the selected state at all. A non-selectable item may still be selected.

By default, list items are selectable. When rebinding them to a new item, they will also be reset to be selectable by GTK.

selectable

if the item should be selectable

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

Returns the type identifier of Self.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Upcasts an object to a superclass or interface T. Read more

Upcasts an object to a reference of its superclass or interface T. Read more

Tries to downcast to a subclass or interface implementor T. Read more

Tries to downcast to a reference of its subclass or interface implementor T. Read more

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more

Casts to T unconditionally. Read more

Casts to &T unconditionally. Read more

Performs the conversion.

Performs the conversion.

Returns true if the object is an instance of (can be cast to) T.

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Same as connect but takes a SignalId instead of a signal name.

Same as connect_local but takes a SignalId instead of a signal name.

Same as connect_unsafe but takes a SignalId instead of a signal name.

Emit signal by signal id.

Same as emit but takes Value for the arguments.

Emit signal by its name.

Same as emit_by_name but takes Value for the arguments.

Emit signal with details by signal id.

Same as emit_with_details but takes Value for the arguments.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

Returns a SendValue clone of self.

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.