#[repr(transparent)]pub struct DropDown { /* private fields */ }Expand description
DropDown is a widget that allows the user to choose an item
from a list of options.
The DropDown displays the selected choice.
The options are given to DropDown in the form of GListModel
and how the individual options are represented is determined by
a ListItemFactory. The default factory displays simple strings.
DropDown knows how to obtain strings from the items in a
StringList; for other models, you have to provide an expression
to find the strings via set_expression().
DropDown can optionally allow search in the popup, which is
useful if the list of options is long. To enable the search entry,
use set_enable_search().
Here is a UI definition example for DropDown with a simple model:
<object class="GtkDropDown">
<property name="model">
<object class="GtkStringList">
<items>
<item translatable="yes">Factory</item>
<item translatable="yes">Home</item>
<item translatable="yes">Subway</item>
</items>
</object>
</property>
</object>
CSS nodes
DropDown has a single CSS node with name dropdown,
with the button and popover nodes as children.
Accessibility
DropDown uses the AccessibleRole::ComboBox role.
Implements
WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, WidgetExtManual, AccessibleExtManual
Implementations§
source§impl DropDown
impl DropDown
sourcepub fn new(
model: Option<&impl IsA<ListModel>>,
expression: Option<impl AsRef<Expression>>
) -> DropDown
pub fn new(
model: Option<&impl IsA<ListModel>>,
expression: Option<impl AsRef<Expression>>
) -> DropDown
Creates a new DropDown.
You may want to call set_factory()
to set up a way to map its items to widgets.
model
the model to use
expression
the expression to use
Returns
a new DropDown
sourcepub fn from_strings(strings: &[&str]) -> DropDown
pub fn from_strings(strings: &[&str]) -> DropDown
sourcepub fn builder() -> DropDownBuilder
pub fn builder() -> DropDownBuilder
Creates a new builder-pattern struct instance to construct DropDown objects.
This method returns an instance of DropDownBuilder which can be used to create DropDown objects.
sourcepub fn enables_search(&self) -> bool
pub fn enables_search(&self) -> bool
sourcepub fn expression(&self) -> Option<Expression>
pub fn expression(&self) -> Option<Expression>
sourcepub fn factory(&self) -> Option<ListItemFactory>
pub fn factory(&self) -> Option<ListItemFactory>
Gets the factory that’s currently used to populate list items.
The factory returned by this function is always used for the
item in the button. It is also used for items in the popup
if property::DropDown::list-factory is not set.
Returns
The factory in use
sourcepub fn list_factory(&self) -> Option<ListItemFactory>
pub fn list_factory(&self) -> Option<ListItemFactory>
Gets the factory that’s currently used to populate list items in the popup.
Returns
The factory in use
sourcepub fn selected(&self) -> u32
pub fn selected(&self) -> u32
Gets the position of the selected item.
Returns
the position of the selected item, or GTK_INVALID_LIST_POSITION
if not item is selected
sourcepub fn selected_item(&self) -> Option<Object>
pub fn selected_item(&self) -> Option<Object>
sourcepub fn shows_arrow(&self) -> bool
Available on crate feature v4_6 only.
pub fn shows_arrow(&self) -> bool
v4_6 only.sourcepub fn set_enable_search(&self, enable_search: bool)
pub fn set_enable_search(&self, enable_search: bool)
Sets whether a search entry will be shown in the popup that allows to search for items in the list.
Note that property::DropDown::expression must be set for
search to work.
enable_search
whether to enable search
sourcepub fn set_expression(&self, expression: Option<impl AsRef<Expression>>)
pub fn set_expression(&self, expression: Option<impl AsRef<Expression>>)
Sets the expression that gets evaluated to obtain strings from items.
This is used for search in the popup. The expression must have
a value type of G_TYPE_STRING.
expression
sourcepub fn set_factory(&self, factory: Option<&impl IsA<ListItemFactory>>)
pub fn set_factory(&self, factory: Option<&impl IsA<ListItemFactory>>)
sourcepub fn set_list_factory(&self, factory: Option<&impl IsA<ListItemFactory>>)
pub fn set_list_factory(&self, factory: Option<&impl IsA<ListItemFactory>>)
sourcepub fn set_selected(&self, position: u32)
pub fn set_selected(&self, position: u32)
Selects the item at the given position.
position
the position of the item to select, or GTK_INVALID_LIST_POSITION
sourcepub fn set_show_arrow(&self, show_arrow: bool)
Available on crate feature v4_6 only.
pub fn set_show_arrow(&self, show_arrow: bool)
v4_6 only.Sets whether an arrow will be displayed within the widget.
show_arrow
whether to show an arrow within the widget
sourcepub fn connect_activate<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
Available on crate feature v4_6 only.
pub fn connect_activate<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId
v4_6 only.Emitted to when the drop down is activated.
The ::activate signal on DropDown is an action signal and
emitting it causes the drop down to pop up its dropdown.
pub fn emit_activate(&self)
Available on crate feature
v4_6 only.pub fn connect_enable_search_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_expression_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_factory_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_list_factory_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_model_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_selected_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_selected_item_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
pub fn connect_show_arrow_notify<F: Fn(&Self) + 'static>(
&self,
f: F
) -> SignalHandlerId
Available on crate feature
v4_6 only.Trait Implementations§
source§impl Ord for DropDown
impl Ord for DropDown
source§impl<OT: ObjectType> PartialEq<OT> for DropDown
impl<OT: ObjectType> PartialEq<OT> for DropDown
source§impl<OT: ObjectType> PartialOrd<OT> for DropDown
impl<OT: ObjectType> PartialOrd<OT> for DropDown
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self and other) and is used by the <=
operator. Read moresource§impl StaticType for DropDown
impl StaticType for DropDown
source§fn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of
Self.impl Eq for DropDown
impl IsA<Accessible> for DropDown
impl IsA<Buildable> for DropDown
impl IsA<ConstraintTarget> for DropDown
impl IsA<Widget> for DropDown
Auto Trait Implementations§
impl RefUnwindSafe for DropDown
impl !Send for DropDown
impl !Sync for DropDown
impl Unpin for DropDown
impl UnwindSafe for DropDown
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