gtk4

Struct TreeModelSort

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pub struct TreeModelSort { /* private fields */ }
👎Deprecated: Since 4.10
Expand description

Use SortListModel instead A GtkTreeModel which makes an underlying tree model sortable

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 TreeViews 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

⚠️ The following code is in C ⚠️

{
  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 GtkTreeSelection::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

⚠️ The following code is in C ⚠️

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);
}

§Properties

§model

The model of the tree model sort.

Readable | Writeable | Construct Only

§Implements

TreeModelSortExt, [trait@glib::ObjectExt], TreeDragSourceExt, TreeModelExt, TreeSortableExt, TreeModelExtManual, TreeSortableExtManual

GLib type: GObject with reference counted clone semantics.

Implementations§

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impl TreeModelSort

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pub const NONE: Option<&'static TreeModelSort> = None

👎Deprecated: Since 4.10
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pub fn with_model(child_model: &impl IsA<TreeModel>) -> TreeModelSort

👎Deprecated: Since 4.10

Creates a new TreeModelSort, with @child_model as the child model.

§child_model

A TreeModel

§Returns

A new TreeModelSort.

Trait Implementations§

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impl Clone for TreeModelSort

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fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

1.6.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for TreeModelSort

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for TreeModelSort

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type ParamSpec = ParamSpecObject

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type SetValue = TreeModelSort

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, TreeModelSort>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for TreeModelSort

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fn hash<H>(&self, state: &mut H)
where H: Hasher,

Hashes the memory address of this object.

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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for TreeModelSort

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fn cmp(&self, other: &Self) -> Ordering

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for TreeModelSort

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impl<OT: ObjectType> PartialEq<OT> for TreeModelSort

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fn eq(&self, other: &OT) -> bool

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

1.6.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for TreeModelSort

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

1.6.0 · source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for TreeModelSort

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for TreeModelSort

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impl IsA<TreeDragSource> for TreeModelSort

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impl IsA<TreeModel> for TreeModelSort

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impl IsA<TreeSortable> for TreeModelSort

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impl<O> GObjectPropertyExpressionExt for O
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fn property_expression(&self, property_name: &str) -> PropertyExpression

Create an expression looking up an object’s property.
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Create an expression looking up an object’s property with a weak reference.
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Get the ParamSpec of the property property_name of this object.
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Return all ParamSpec of the properties of this object.
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Disconnect a previously connected signal handler.
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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Notify that the given property has changed its value. Read more
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Downgrade this object to a weak reference.
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type Value = T

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type Value = T

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TransparentType for T

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impl<O> TreeDragSourceExt for O
where O: IsA<TreeDragSource>,

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fn drag_data_delete(&self, path: &TreePath) -> bool

👎Deprecated: Since 4.10
Asks the TreeDragSource to delete the row at @path, because it was moved somewhere else via drag-and-drop. Returns false if the deletion fails because @path no longer exists, or for some model-specific reason. Should robustly handle a @path no longer found in the model! Read more
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fn drag_data_get(&self, path: &TreePath) -> Option<ContentProvider>

👎Deprecated: Since 4.10
Asks the TreeDragSource to return a gdk::ContentProvider representing the row at @path. Should robustly handle a @path no longer found in the model! Read more
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fn row_draggable(&self, path: &TreePath) -> bool

👎Deprecated: Since 4.10
Asks the TreeDragSource whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable. Read more
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impl<O> TreeModelExt for O
where O: IsA<TreeModel>,

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fn foreach<P: FnMut(&TreeModel, &TreePath, &TreeIter) -> bool>(&self, func: P)

👎Deprecated: Since 4.10
Calls @func on each node in model in a depth-first fashion. Read more
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fn column_type(&self, index_: i32) -> Type

👎Deprecated: Since 4.10
Returns the type of the column. Read more
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fn flags(&self) -> TreeModelFlags

👎Deprecated: Since 4.10
Returns a set of flags supported by this interface. Read more
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fn iter(&self, path: &TreePath) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @iter to a valid iterator pointing to @path. Read more
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fn iter_first(&self) -> Option<TreeIter>

👎Deprecated: Since 4.10
Initializes @iter with the first iterator in the tree (the one at the path “0”). Read more
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fn iter_from_string(&self, path_string: &str) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @iter to a valid iterator pointing to @path_string, if it exists. Read more
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fn n_columns(&self) -> i32

👎Deprecated: Since 4.10
Returns the number of columns supported by @self. Read more
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fn path(&self, iter: &TreeIter) -> TreePath

👎Deprecated: Since 4.10
Returns a newly-created TreePath referenced by @iter. Read more
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fn string_from_iter(&self, iter: &TreeIter) -> Option<GString>

👎Deprecated: Since 4.10
Generates a string representation of the iter. Read more
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fn iter_children(&self, parent: Option<&TreeIter>) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @iter to point to the first child of @parent. Read more
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fn iter_has_child(&self, iter: &TreeIter) -> bool

👎Deprecated: Since 4.10
Returns true if @iter has children, false otherwise. Read more
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fn iter_n_children(&self, iter: Option<&TreeIter>) -> i32

👎Deprecated: Since 4.10
Returns the number of children that @iter has. Read more
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fn iter_next(&self, iter: &TreeIter) -> bool

👎Deprecated: Since 4.10
Sets @iter to point to the node following it at the current level. Read more
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fn iter_nth_child(&self, parent: Option<&TreeIter>, n: i32) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @iter to be the child of @parent, using the given index. Read more
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fn iter_parent(&self, child: &TreeIter) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @iter to be the parent of @child. Read more
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fn iter_previous(&self, iter: &TreeIter) -> bool

👎Deprecated: Since 4.10
Sets @iter to point to the previous node at the current level. Read more
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fn row_changed(&self, path: &TreePath, iter: &TreeIter)

👎Deprecated: Since 4.10
Emits the ::row-changed signal on @self. Read more
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fn row_deleted(&self, path: &TreePath)

👎Deprecated: Since 4.10
Emits the ::row-deleted signal on @self. Read more
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fn row_has_child_toggled(&self, path: &TreePath, iter: &TreeIter)

👎Deprecated: Since 4.10
Emits the ::row-has-child-toggled signal on @self. Read more
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fn row_inserted(&self, path: &TreePath, iter: &TreeIter)

👎Deprecated: Since 4.10
Emits the ::row-inserted signal on @self. Read more
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fn connect_row_changed<F: Fn(&Self, &TreePath, &TreeIter) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 4.10
This signal is emitted when a row in the model has changed. Read more
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fn connect_row_deleted<F: Fn(&Self, &TreePath) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 4.10
This signal is emitted when a row has been deleted. Read more
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fn connect_row_has_child_toggled<F: Fn(&Self, &TreePath, &TreeIter) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 4.10
This signal is emitted when a row has gotten the first child row or lost its last child row. Read more
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fn connect_row_inserted<F: Fn(&Self, &TreePath, &TreeIter) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 4.10
This signal is emitted when a new row has been inserted in the model. Read more
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impl<O> TreeModelExtManual for O
where O: IsA<TreeModel>,

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fn get_value(&self, iter: &TreeIter, column: i32) -> Value

👎Deprecated: Since 4.10
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fn get<V: for<'b> FromValue<'b> + 'static>( &self, iter: &TreeIter, column: i32, ) -> V

👎Deprecated: Since 4.10
Similar to Self::get_value but panics if the value is of a different type. Gets the value of one or more cells in the row referenced by @iter. Read more
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impl<O> TreeModelSortExt for O
where O: IsA<TreeModelSort>,

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fn clear_cache(&self)

👎Deprecated: Since 4.10
This function should almost never be called. It clears the @self of any cached iterators that haven’t been reffed with gtk_tree_model_ref_node(). This might be useful if the child model being sorted is static (and doesn’t change often) and there has been a lot of unreffed access to nodes. As a side effect of this function, all unreffed iters will be invalid. Read more
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fn convert_child_iter_to_iter(&self, child_iter: &TreeIter) -> Option<TreeIter>

👎Deprecated: Since 4.10
Sets @sort_iter to point to the row in @self that corresponds to the row pointed at by @child_iter. If @sort_iter was not set, false is returned. Note: a boolean is only returned since 2.14. Read more
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fn convert_child_path_to_path(&self, child_path: &TreePath) -> Option<TreePath>

👎Deprecated: Since 4.10
Converts @child_path to a path relative to @self. That is, @child_path points to a path in the child model. The returned path will point to the same row in the sorted model. If @child_path isn’t a valid path on the child model, then None is returned. Read more
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fn convert_iter_to_child_iter(&self, sorted_iter: &TreeIter) -> TreeIter

👎Deprecated: Since 4.10
Sets @child_iter to point to the row pointed to by @sorted_iter. Read more
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fn convert_path_to_child_path(&self, sorted_path: &TreePath) -> Option<TreePath>

👎Deprecated: Since 4.10
Converts @sorted_path to a path on the child model of @self. That is, @sorted_path points to a location in @self. The returned path will point to the same location in the model not being sorted. If @sorted_path does not point to a location in the child model, None is returned. Read more
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fn model(&self) -> TreeModel

👎Deprecated: Since 4.10
Returns the model the TreeModelSort is sorting. Read more
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fn iter_is_valid(&self, iter: &TreeIter) -> bool

👎Deprecated: Since 4.10
This function is slow. Only use it for debugging and/or testing purposes.
Read more
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fn reset_default_sort_func(&self)

👎Deprecated: Since 4.10
This resets the default sort function to be in the “unsorted” state. That is, it is in the same order as the child model. It will re-sort the model to be in the same order as the child model only if the TreeModelSort is in “unsorted” state. Read more
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impl<O> TreeSortableExt for O
where O: IsA<TreeSortable>,

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fn has_default_sort_func(&self) -> bool

👎Deprecated: Since 4.10
Returns true if the model has a default sort function. This is used primarily by GtkTreeViewColumns in order to determine if a model can go back to the default state, or not. Read more
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fn sort_column_changed(&self)

👎Deprecated: Since 4.10
Emits a GtkTreeSortable::sort-column-changed signal on @self. Read more
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fn connect_sort_column_changed<F: Fn(&Self) + 'static>( &self, f: F, ) -> SignalHandlerId

👎Deprecated: Since 4.10
The ::sort-column-changed signal is emitted when the sort column or sort order of @sortable is changed. The signal is emitted before the contents of @sortable are resorted.
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impl<O> TreeSortableExtManual for O
where O: IsA<TreeSortable>,

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fn set_default_sort_func<F>(&self, sort_func: F)
where F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static,

👎Deprecated: Since 4.10
Sets the default comparison function used when sorting to be @sort_func. If the current sort column id of @self is GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, then the model will sort using this function. Read more
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fn set_sort_func<F>(&self, sort_column_id: SortColumn, sort_func: F)
where F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static,

👎Deprecated: Since 4.10
Sets the comparison function used when sorting to be @sort_func. If the current sort column id of @self is the same as @sort_column_id, then the model will sort using this function. Read more
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fn sort_column_id(&self) -> Option<(SortColumn, SortType)>

👎Deprecated: Since 4.10
Fills in @sort_column_id and @order with the current sort column and the order. It returns true unless the @sort_column_id is GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID or GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID. Read more
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fn set_sort_column_id(&self, sort_column_id: SortColumn, order: SortType)

👎Deprecated: Since 4.10
Sets the current sort column to be @sort_column_id. The @self will resort itself to reflect this change, after emitting a GtkTreeSortable::sort-column-changed signal. @sort_column_id may either be a regular column id, or one of the following special values: Read more
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fn set_unsorted(&self)

👎Deprecated: Since 4.10
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,