[−]Struct gtk::TreeModelSort
The TreeModelSort
is a model which implements the TreeSortable
interface. It does not hold any data itself, but rather is created with
a child model and proxies its data. It has identical column types to
this child model, and the changes in the child are propagated. The
primary purpose of this model is to provide a way to sort a different
model without modifying it. Note that the sort function used by
TreeModelSort
is not guaranteed to be stable.
The use of this is best demonstrated through an example. In the
following sample code we create two TreeView
widgets each with a
view of the same data. As the model is wrapped here by a
TreeModelSort
, the two GtkTreeViews
can each sort their
view of the data without affecting the other. By contrast, if we
simply put the same model in each widget, then sorting the first would
sort the second.
Using a TreeModelSort
{
GtkTreeView *tree_view1;
GtkTreeView *tree_view2;
GtkTreeModel *sort_model1;
GtkTreeModel *sort_model2;
GtkTreeModel *child_model;
// get the child model
child_model = get_my_model ();
// Create the first tree
sort_model1 = gtk_tree_model_sort_new_with_model (child_model);
tree_view1 = gtk_tree_view_new_with_model (sort_model1);
// Create the second tree
sort_model2 = gtk_tree_model_sort_new_with_model (child_model);
tree_view2 = gtk_tree_view_new_with_model (sort_model2);
// Now we can sort the two models independently
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model1),
COLUMN_1, GTK_SORT_ASCENDING);
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model2),
COLUMN_1, GTK_SORT_DESCENDING);
}
To demonstrate how to access the underlying child model from the sort
model, the next example will be a callback for the TreeSelection
TreeSelection::changed
signal. In this callback, we get a string
from COLUMN_1 of the model. We then modify the string, find the same
selected row on the child model, and change the row there.
Accessing the child model of in a selection changed callback
void
selection_changed (GtkTreeSelection *selection, gpointer data)
{
GtkTreeModel *sort_model = NULL;
GtkTreeModel *child_model;
GtkTreeIter sort_iter;
GtkTreeIter child_iter;
char *some_data = NULL;
char *modified_data;
// Get the current selected row and the model.
if (! gtk_tree_selection_get_selected (selection,
&sort_model,
&sort_iter))
return;
// Look up the current value on the selected row and get
// a new value to change it to.
gtk_tree_model_get (GTK_TREE_MODEL (sort_model), &sort_iter,
COLUMN_1, &some_data,
-1);
modified_data = change_the_data (some_data);
g_free (some_data);
// Get an iterator on the child model, instead of the sort model.
gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (sort_model),
&child_iter,
&sort_iter);
// Get the child model and change the value of the row. In this
// example, the child model is a GtkListStore. It could be any other
// type of model, though.
child_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (sort_model));
gtk_list_store_set (GTK_LIST_STORE (child_model), &child_iter,
COLUMN_1, &modified_data,
-1);
g_free (modified_data);
}
Implements
TreeModelSortExt
, glib::object::ObjectExt
, TreeDragSourceExt
, TreeModelExt
, TreeSortableExt
, TreeSortableExtManual
Implementations
impl TreeModelSort
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pub fn new<P: IsA<TreeModel>>(child_model: &P) -> TreeModelSort
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Creates a new TreeModelSort
, with child_model
as the child model.
child_model
A TreeModel
Returns
A new TreeModelSort
.
Trait Implementations
impl Clone for TreeModelSort
fn clone(&self) -> TreeModelSort
fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl Debug for TreeModelSort
impl Display for TreeModelSort
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impl Eq for TreeModelSort
impl Hash for TreeModelSort
fn hash<__H: Hasher>(&self, state: &mut __H)
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
impl IsA<TreeDragSource> for TreeModelSort
impl IsA<TreeModel> for TreeModelSort
impl IsA<TreeSortable> for TreeModelSort
impl Ord for TreeModelSort
fn cmp(&self, other: &TreeModelSort) -> Ordering
#[must_use]fn max(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn min(self, other: Self) -> Self
1.21.0[src]
#[must_use]fn clamp(self, min: Self, max: Self) -> Self
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impl<T: ObjectType> PartialEq<T> for TreeModelSort
impl<T: ObjectType> PartialOrd<T> for TreeModelSort
fn partial_cmp(&self, other: &T) -> Option<Ordering>
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
impl StaticType for TreeModelSort
fn static_type() -> Type
Auto Trait Implementations
impl RefUnwindSafe for TreeModelSort
impl !Send for TreeModelSort
impl !Sync for TreeModelSort
impl Unpin for TreeModelSort
impl UnwindSafe for TreeModelSort
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<Super, Sub> CanDowncast<Sub> for Super where
Sub: IsA<Super>,
Super: IsA<Super>,
Sub: IsA<Super>,
Super: IsA<Super>,
impl<T> Cast for T where
T: ObjectType,
T: ObjectType,
fn upcast<T>(self) -> T where
Self: IsA<T>,
T: ObjectType,
Self: IsA<T>,
T: ObjectType,
fn upcast_ref<T>(&self) -> &T where
Self: IsA<T>,
T: ObjectType,
Self: IsA<T>,
T: ObjectType,
fn downcast<T>(self) -> Result<T, Self> where
Self: CanDowncast<T>,
T: ObjectType,
Self: CanDowncast<T>,
T: ObjectType,
fn downcast_ref<T>(&self) -> Option<&T> where
Self: CanDowncast<T>,
T: ObjectType,
Self: CanDowncast<T>,
T: ObjectType,
fn dynamic_cast<T>(self) -> Result<T, Self> where
T: ObjectType,
T: ObjectType,
fn dynamic_cast_ref<T>(&self) -> Option<&T> where
T: ObjectType,
T: ObjectType,
unsafe fn unsafe_cast<T>(self) -> T where
T: ObjectType,
T: ObjectType,
unsafe fn unsafe_cast_ref<T>(&self) -> &T where
T: ObjectType,
T: ObjectType,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ObjectExt for T where
T: ObjectType,
T: ObjectType,
fn is<U>(&self) -> bool where
U: StaticType,
U: StaticType,
fn get_type(&self) -> Type
fn get_object_class(&self) -> &ObjectClass
fn set_properties(
&self,
property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>
&self,
property_values: &[(&str, &dyn ToValue)]
) -> Result<(), BoolError>
fn set_property<'a, N>(
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>,
&self,
property_name: N,
value: &dyn ToValue
) -> Result<(), BoolError> where
N: Into<&'a str>,
fn get_property<'a, N>(&self, property_name: N) -> Result<Value, BoolError> where
N: Into<&'a str>,
N: Into<&'a str>,
unsafe fn set_qdata<QD>(&self, key: Quark, value: QD) where
QD: 'static,
QD: 'static,
unsafe fn get_qdata<QD>(&self, key: Quark) -> Option<&QD> where
QD: 'static,
QD: 'static,
unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD> where
QD: 'static,
QD: 'static,
unsafe fn set_data<QD>(&self, key: &str, value: QD) where
QD: 'static,
QD: 'static,
unsafe fn get_data<QD>(&self, key: &str) -> Option<&QD> where
QD: 'static,
QD: 'static,
unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD> where
QD: 'static,
QD: 'static,
fn block_signal(&self, handler_id: &SignalHandlerId)
fn unblock_signal(&self, handler_id: &SignalHandlerId)
fn stop_signal_emission(&self, signal_name: &str)
fn disconnect(&self, handler_id: SignalHandlerId)
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Send + Sync + Fn(&T, &ParamSpec),
F: 'static + Send + Sync + Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec),
fn notify<'a, N>(&self, property_name: N) where
N: Into<&'a str>,
N: Into<&'a str>,
fn notify_by_pspec(&self, pspec: &ParamSpec)
fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>,
N: Into<&'a str>,
fn get_property_type<'a, N>(&self, property_name: N) -> Option<Type> where
N: Into<&'a str>,
N: Into<&'a str>,
fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>,
N: Into<&'a str>,
fn list_properties(&self) -> Vec<ParamSpec>
fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>,
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>,
fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>,
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>,
unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>,
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>,
fn emit<'a, N>(
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,
&self,
signal_name: N,
args: &[&dyn ToValue]
) -> Result<Option<Value>, BoolError> where
N: Into<&'a str>,
fn downgrade(&self) -> WeakRef<T>
fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType,
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
M: Into<&'a str>,
N: Into<&'a str>,
O: ObjectType,
fn ref_count(&self) -> u32
impl<'a, T> ToGlibContainerFromSlice<'a, *const GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
_t: &'a [T]
) -> (*const GList, <T as ToGlibContainerFromSlice<'a, *const GList>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GList
impl<'a, T> ToGlibContainerFromSlice<'a, *const GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_container_from_slice(
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
_t: &'a [T]
) -> (*const GPtrArray, <T as ToGlibContainerFromSlice<'a, *const GPtrArray>>::Storage)
fn to_glib_full_from_slice(_t: &[T]) -> *const GPtrArray
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<Array>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
t: &'a [T]
) -> (*mut GArray, <T as ToGlibContainerFromSlice<'a, *mut GArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GArray
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GList> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<List>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
t: &'a [T]
) -> (*mut GList, <T as ToGlibContainerFromSlice<'a, *mut GList>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GList
impl<'a, T> ToGlibContainerFromSlice<'a, *mut GPtrArray> for T where
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
T: GlibPtrDefault + ToGlibPtr<'a, <T as GlibPtrDefault>::GlibType>,
type Storage = (Option<PtrArray>, Vec<Stash<'a, <T as GlibPtrDefault>::GlibType, T>>)
fn to_glib_none_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_container_from_slice(
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
t: &'a [T]
) -> (*mut GPtrArray, <T as ToGlibContainerFromSlice<'a, *mut GPtrArray>>::Storage)
fn to_glib_full_from_slice(t: &[T]) -> *mut GPtrArray
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T> ToValue for T where
T: SetValue + ?Sized,
T: SetValue + ?Sized,
fn to_value(&self) -> Value
fn to_value_type(&self) -> Type
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,