AtkSelection

## AtkSelection AtkSelection — The ATK interface implemented by container objects whose AtkObject children can be selected. |

## Synopsis

                        AtkSelection;
    gboolean            atk_selection_add_selection         (AtkSelection *selection,
                                                             gint i);
    gboolean            atk_selection_clear_selection       (AtkSelection *selection);
    AtkObject *         atk_selection_ref_selection         (AtkSelection *selection,
                                                             gint i);
    gint                atk_selection_get_selection_count   (AtkSelection *selection);
    gboolean            atk_selection_is_child_selected     (AtkSelection *selection,
                                                             gint i);
    gboolean            atk_selection_remove_selection      (AtkSelection *selection,
                                                             gint i);
    gboolean            atk_selection_select_all_selection  (AtkSelection *selection);

## Object Hierarchy

      GInterface
       +----AtkSelection

## Known Implementations

AtkSelection is implemented by AtkNoOpObject.

## Signals

      "selection-changed"                              : Run Last

## Description

AtkSelection should be implemented by UI components with children which are exposed by atk_object_ref_child and atk_object_get_n_children, if the use of the parent UI component ordinarily involves selection of one or more of the objects corresponding to those AtkObject children - for example, selectable lists.

Note that other types of "selection" (for instance text selection) are accomplished a other ATK interfaces - AtkSelection is limited to the selection/deselection of children.

## Details

### AtkSelection

    typedef struct _AtkSelection AtkSelection;

### atk_selection_add_selection ()

    gboolean            atk_selection_add_selection         (AtkSelection *selection,
                                                             gint i);

Adds the specified accessible child of the object to the object's selection.

`selection` : | a GObject instance that implements AtkSelectionIface
`i` : | a gint specifying the child index.
Returns : | TRUE if success, FALSE otherwise.

### atk_selection_clear_selection ()

    gboolean            atk_selection_clear_selection       (AtkSelection *selection);

Clears the selection in the object so that no children in the object are selected.

`selection` : | a GObject instance that implements AtkSelectionIface
Returns : | TRUE if success, FALSE otherwise.

### atk_selection_ref_selection ()

    AtkObject *         atk_selection_ref_selection         (AtkSelection *selection,
                                                             gint i);

Gets a reference to the accessible object representing the specified selected child of the object. Note: callers should not rely on `NULL` or on a zero value for indication of whether AtkSelectionIface is implemented, they should use type checking/interface checking macros or the `atk_get_accessible_value()` convenience method.

`selection` : | a GObject instance that implements AtkSelectionIface
`i` : | a gint specifying the index in the selection set. (e.g. the ith selection as opposed to the ith child).
Returns : | an AtkObject representing the selected accessible , or `NULL` if `selection` does not implement this interface. [transfer full]

### atk_selection_get_selection_count ()

    gint                atk_selection_get_selection_count   (AtkSelection *selection);

Gets the number of accessible children currently selected. Note: callers should not rely on `NULL` or on a zero value for indication of whether AtkSelectionIface is implemented, they should use type checking/interface checking macros or the `atk_get_accessible_value()` convenience method.

`selection` : | a GObject instance that implements AtkSelectionIface
Returns : | a gint representing the number of items selected, or 0 if `selection` does not implement this interface.

### atk_selection_is_child_selected ()

    gboolean            atk_selection_is_child_selected     (AtkSelection *selection,
                                                             gint i);

Determines if the current child of this object is selected Note: callers should not rely on `NULL` or on a zero value for indication of whether AtkSelectionIface is implemented, they should use type checking/interface checking macros or the `atk_get_accessible_value()` convenience method.

`selection` : | a GObject instance that implements AtkSelectionIface
`i` : | a gint specifying the child index.
Returns : | a gboolean representing the specified child is selected, or 0 if `selection` does not implement this interface.

### atk_selection_remove_selection ()

    gboolean            atk_selection_remove_selection      (AtkSelection *selection,
                                                             gint i);

Removes the specified child of the object from the object's selection.

`selection` : | a GObject instance that implements AtkSelectionIface
`i` : | a gint specifying the index in the selection set. (e.g. the ith selection as opposed to the ith child).
Returns : | TRUE if success, FALSE otherwise.

### atk_selection_select_all_selection ()

    gboolean            atk_selection_select_all_selection  (AtkSelection *selection);

Causes every child of the object to be selected if the object supports multiple selections.

`selection` : | a GObject instance that implements AtkSelectionIface
Returns : | TRUE if success, FALSE otherwise.

## Signal Details

### The `"selection-changed"` signal

    void                user_function                      (AtkSelection *atkselection,
                                                            gpointer      user_data)         : Run Last

The "selection-changed" signal is emitted by an object which implements AtkSelection interface when the selection changes.

`atkselection` : | the object which received the signal.
`user_data` : | user data set when the signal handler was connected.