Trait gtk::prelude::TreeModelExt

source · [−]
pub trait TreeModelExt: 'static {

Show 26 methods    fn foreach<P: FnMut(&TreeModel, &TreePath, &TreeIter) -> bool>(
        &self,
        func: P
    );
    fn column_type(&self, index_: i32) -> Type;
    fn flags(&self) -> TreeModelFlags;
    fn iter(&self, path: &TreePath) -> Option<TreeIter>;
    fn iter_first(&self) -> Option<TreeIter>;
    fn iter_from_string(&self, path_string: &str) -> Option<TreeIter>;
    fn n_columns(&self) -> i32;
    fn path(&self, iter: &TreeIter) -> Option<TreePath>;
    fn string_from_iter(&self, iter: &TreeIter) -> Option<GString>;
    fn value(&self, iter: &TreeIter, column: i32) -> Value;
    fn iter_children(&self, parent: Option<&TreeIter>) -> Option<TreeIter>;
    fn iter_has_child(&self, iter: &TreeIter) -> bool;
    fn iter_n_children(&self, iter: Option<&TreeIter>) -> i32;
    fn iter_next(&self, iter: &TreeIter) -> bool;
    fn iter_nth_child(
        &self,
        parent: Option<&TreeIter>,
        n: i32
    ) -> Option<TreeIter>;
    fn iter_parent(&self, child: &TreeIter) -> Option<TreeIter>;
    fn iter_previous(&self, iter: &TreeIter) -> bool;
    fn row_changed(&self, path: &TreePath, iter: &TreeIter);
    fn row_deleted(&self, path: &TreePath);
    fn row_has_child_toggled(&self, path: &TreePath, iter: &TreeIter);
    fn row_inserted(&self, path: &TreePath, iter: &TreeIter);
    fn rows_reordered_with_length(
        &self,
        path: &TreePath,
        iter: Option<&TreeIter>,
        new_order: &[i32]
    );
    fn connect_row_changed<F: Fn(&Self, &TreePath, &TreeIter) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_row_deleted<F: Fn(&Self, &TreePath) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_row_has_child_toggled<F: Fn(&Self, &TreePath, &TreeIter) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;
    fn connect_row_inserted<F: Fn(&Self, &TreePath, &TreeIter) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId;

}
Expand description

Trait containing all TreeModel methods.

Implementors

ListStore, TreeModelFilter, TreeModelSort, TreeModel, TreeSortable, TreeStore

Required Methods

Calls func on each node in model in a depth-first fashion.

If func returns true, then the tree ceases to be walked, and foreach() returns.

func

a function to be called on each row

Returns the type of the column.

index_

the column index

Returns

the type of the column

Returns a set of flags supported by this interface.

The flags are a bitwise combination of TreeModelFlags. The flags supported should not change during the lifetime of the self.

Returns

the flags supported by this interface

Sets iter to a valid iterator pointing to path. If path does not exist, iter is set to an invalid iterator and false is returned.

path

the TreePath-struct

Returns

true, if iter was set

iter

the uninitialized TreeIter-struct

Initializes iter with the first iterator in the tree (the one at the path “0”) and returns true. Returns false if the tree is empty.

Returns

true, if iter was set

iter

the uninitialized TreeIter-struct

Sets iter to a valid iterator pointing to path_string, if it exists. Otherwise, iter is left invalid and false is returned.

path_string

a string representation of a TreePath-struct

Returns

true, if iter was set

iter

an uninitialized TreeIter-struct

Returns the number of columns supported by self.

Returns

the number of columns

Returns a newly-created TreePath-struct referenced by iter.

This path should be freed with gtk_tree_path_free().

iter

the TreeIter-struct

Returns

a newly-created TreePath-struct

Generates a string representation of the iter.

This string is a “:” separated list of numbers. For example, “4:10:0:3” would be an acceptable return value for this string.

iter

a TreeIter-struct

Returns

a newly-allocated string. Must be freed with g_free().

Initializes and sets value to that at column.

When done with value, [glib::Value::unset()][crate::glib::Value::unset()] needs to be called to free any allocated memory.

iter

the TreeIter-struct

column

the column to lookup the value at

Returns
value

an empty glib::Value to set

Sets iter to point to the first child of parent.

If parent has no children, false is returned and iter is set to be invalid. parent will remain a valid node after this function has been called.

If parent is None returns the first node, equivalent to gtk_tree_model_get_iter_first (tree_model, iter);

parent

the TreeIter-struct, or None

Returns

true, if iter has been set to the first child

iter

the new TreeIter-struct to be set to the child

Returns true if iter has children, false otherwise.

iter

the TreeIter-struct to test for children

Returns

true if iter has children

Returns the number of children that iter has.

As a special case, if iter is None, then the number of toplevel nodes is returned.

iter

the TreeIter-struct, or None

Returns

the number of children of iter

Sets iter to point to the node following it at the current level.

If there is no next iter, false is returned and iter is set to be invalid.

iter

the TreeIter-struct

Returns

true if iter has been changed to the next node

Sets iter to be the child of parent, using the given index.

The first index is 0. If n is too big, or parent has no children, iter is set to an invalid iterator and false is returned. parent will remain a valid node after this function has been called. As a special case, if parent is None, then the n-th root node is set.

parent

the TreeIter-struct to get the child from, or None.

n

the index of the desired child

Returns

true, if parent has an n-th child

iter

the TreeIter-struct to set to the nth child

Sets iter to be the parent of child.

If child is at the toplevel, and doesn’t have a parent, then iter is set to an invalid iterator and false is returned. child will remain a valid node after this function has been called.

iter will be initialized before the lookup is performed, so child and iter cannot point to the same memory location.

child

the TreeIter-struct

Returns

true, if iter is set to the parent of child

iter

the new TreeIter-struct to set to the parent

Sets iter to point to the previous node at the current level.

If there is no previous iter, false is returned and iter is set to be invalid.

iter

the TreeIter-struct

Returns

true if iter has been changed to the previous node

Emits the signal::TreeModel::row-changed signal on self.

path

a TreePath-struct pointing to the changed row

iter

a valid TreeIter-struct pointing to the changed row

Emits the signal::TreeModel::row-deleted signal on self.

This should be called by models after a row has been removed. The location pointed to by path should be the location that the row previously was at. It may not be a valid location anymore.

Nodes that are deleted are not unreffed, this means that any outstanding references on the deleted node should not be released.

path

a TreePath-struct pointing to the previous location of the deleted row

Emits the signal::TreeModel::row-has-child-toggled signal on self. This should be called by models after the child state of a node changes.

path

a TreePath-struct pointing to the changed row

iter

a valid TreeIter-struct pointing to the changed row

Emits the signal::TreeModel::row-inserted signal on self.

path

a TreePath-struct pointing to the inserted row

iter

a valid TreeIter-struct pointing to the inserted row

Emits the signal::TreeModel::rows-reordered signal on self.

This should be called by models when their rows have been reordered.

path

a TreePath-struct pointing to the tree node whose children have been reordered

iter

a valid TreeIter-struct pointing to the node whose children have been reordered, or None if the depth of path is 0

new_order

an array of integers mapping the current position of each child to its old position before the re-ordering, i.e. new_order``[newpos] = oldpos

This signal is emitted when a row in the model has changed.

path

a TreePath-struct identifying the changed row

iter

a valid TreeIter-struct pointing to the changed row

This signal is emitted when a row has been deleted.

Note that no iterator is passed to the signal handler, since the row is already deleted.

This should be called by models after a row has been removed. The location pointed to by path should be the location that the row previously was at. It may not be a valid location anymore.

path

a TreePath-struct identifying the row

This signal is emitted when a row has gotten the first child row or lost its last child row.

path

a TreePath-struct identifying the row

iter

a valid TreeIter-struct pointing to the row

This signal is emitted when a new row has been inserted in the model.

Note that the row may still be empty at this point, since it is a common pattern to first insert an empty row, and then fill it with the desired values.

path

a TreePath-struct identifying the new row

iter

a valid TreeIter-struct pointing to the new row

Implementors