Struct gtk4::TreeListModel [−][src]
pub struct TreeListModel(_);Expand description
TreeListModel is a list model that can create child models on demand.
Implements
Implementations
Creates a new empty TreeListModel displaying root
with all rows collapsed.
root
The GListModel to use as root
passthrough
true to pass through items from the models
autoexpand
true to set the autoexpand property and expand the root model
create_func
Function to call to create the GListModel for the children
of an item
Returns
a newly created TreeListModel.
Creates a new builder-pattern struct instance to construct TreeListModel objects.
This method returns an instance of TreeListModelBuilder which can be used to create TreeListModel objects.
Gets whether the model is set to automatically expand new rows that get added.
This can be either rows added by changes to the underlying
models or via TreeListRow::set_expanded().
Returns
true if the model is set to autoexpand
Gets whether the model is passing through original row items.
If this function returns false, the GListModel functions for self
return custom TreeListRow objects. You need to call
TreeListRow::item() on these objects to get the original
item.
If true, the values of the child models are passed through in their
original state. You then need to call row()
to get the custom TreeListRows.
Returns
true if the model is passing through original row items
Gets the row object for the given row.
If position is greater than the number of items in self,
None is returned.
The row object can be used to expand and collapse rows as well as to inspect its position in the tree. See its documentation for details.
This row object is persistent and will refer to the current
item as long as the row is present in self, independent of
other rows being added or removed.
If self is set to not be passthrough, this function is
equivalent to calling g_list_model_get_item().
Do not confuse this function with child_row().
position
the position of the row to fetch
Returns
The row item
Sets whether the model should autoexpand.
If set to true, the model will recursively expand all rows that
get added to the model. This can be either rows added by changes
to the underlying models or via TreeListRow::set_expanded().
autoexpand
true to make the model autoexpand its rows
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 TreeListModel
impl !Send for TreeListModel
impl !Sync for TreeListModel
impl Unpin for TreeListModel
impl UnwindSafe for TreeListModel
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
pub fn connect_items_changed<F>(&self, f: F) -> SignalHandlerId where
F: 'static + Fn(&O, u32, u32, u32),
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.