Struct gtk4::ComboBoxText [−][src]
pub struct ComboBoxText(_);
Expand description
A ComboBoxText
is a simple variant of ComboBox
for text-only
use cases.
ComboBoxText
hides the model-view complexity of ComboBox
.
To create a ComboBoxText
, use new()
or
with_entry()
.
You can add items to a ComboBoxText
with
append_text()
,
insert_text()
or
prepend_text()
and remove options with
remove()
.
If the ComboBoxText
contains an entry (via the
property::ComboBox::has-entry
property), its contents can be retrieved
using active_text()
.
You should not call ComboBoxExt::set_model()
or attempt to pack more
cells into this combo box via its CellLayout
interface.
GtkComboBoxText as GtkBuildable
The ComboBoxText
implementation of the Buildable
interface supports
adding items directly using the <items>
element and specifying <item>
elements for each item. Each <item>
element can specify the “id”
corresponding to the appended text and also supports the regular
translation attributes “translatable”, “context” and “comments”.
Here is a UI definition fragment specifying ComboBoxText
items:
<object class="GtkComboBoxText">
<items>
<item translatable="yes" id="factory">Factory</item>
<item translatable="yes" id="home">Home</item>
<item translatable="yes" id="subway">Subway</item>
</items>
</object>
CSS nodes
combobox
╰── box.linked
├── entry.combo
├── button.combo
╰── window.popup
ComboBoxText
has a single CSS node with name combobox. It adds
the style class .combo to the main CSS nodes of its entry and button
children, and the .linked class to the node of its internal box.
Implements
ComboBoxExt
, WidgetExt
, glib::ObjectExt
, AccessibleExt
, BuildableExt
, ConstraintTargetExt
, CellEditableExt
, CellLayoutExt
, ComboBoxExtManual
, WidgetExtManual
, AccessibleExtManual
, CellEditableExtManual
, CellLayoutExtManual
Implementations
Creates a new builder-pattern struct instance to construct ComboBoxText
objects.
This method returns an instance of ComboBoxTextBuilder
which can be used to create ComboBoxText
objects.
Appends text
to the list of strings stored in self
.
This is the same as calling insert_text()
with a position of -1.
text
A string
Returns the currently active string in self
.
If no row is currently selected, None
is returned.
If self
contains an entry, this function will
return its contents (which will not necessarily
be an item from the list).
Returns
a newly allocated
string containing the currently active text.
Must be freed with g_free()
.
Prepends text
to the list of strings stored in self
.
This is the same as calling insert_text()
with a position of 0.
text
A string
Removes all the text entries from the combo box.
Trait Implementations
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
Returns the type identifier of Self
.
Auto Trait Implementations
impl RefUnwindSafe for ComboBoxText
impl !Send for ComboBoxText
impl !Sync for ComboBoxText
impl Unpin for ComboBoxText
impl UnwindSafe for ComboBoxText
Blanket Implementations
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
Returns true
if the object is an instance of (can be cast to) T
.
pub fn set_property<'a, N, V>(
&self,
property_name: N,
value: V
) -> Result<(), BoolError> where
N: Into<&'a str>,
V: ToValue,
pub fn set_property_from_value<'a, N>(
&self,
property_name: N,
value: &Value
) -> Result<(), BoolError> where
N: Into<&'a str>,
pub fn set_properties_from_value(
&self,
property_values: &[(&str, Value)]
) -> Result<(), BoolError>
pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,
pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,
Safety Read more
Safety Read more
Safety Read more
Safety Read more
pub fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: 'static + Fn(&[Value]) -> Option<Value> + Send + Sync,
Same as connect
but takes a SignalId
instead of a signal name.
pub fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: 'static + Fn(&[Value]) -> Option<Value>,
Same as connect_local
but takes a SignalId
instead of a signal name.
pub unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
N: Into<&'a str>,
F: Fn(&[Value]) -> Option<Value>,
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.
pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec) + Send + Sync,
pub fn connect_notify_local<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec),
pub unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
pub fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
O: ObjectType,
N: Into<&'a str>,
M: Into<&'a str>,
Returns a SendValue
clone of self
.