nsIAccessibleSelectable 编辑

accessible/public/nsIAccessibleSelectable.idlScriptable An interface for the accessibility module and in-process accessibility clients for dealing with getting and changing the selection of accessible nodes. Inherits from: nsISupports Last changed in Gecko 1.7

Method overview

void addChildToSelection(in long index);

void clearSelection();

nsIArray GetSelectedChildren();

boolean isChildSelected(in long index);

nsIAccessible refSelection(in long index);

void removeChildFromSelection(in long index);

boolean selectAllSelection();

Attributes

Attribute	Type	Description
selectionCount	long	The number of accessible children currently selected. Read only.

Constants

Constant	Value	Description
eSelection_Add	0
eSelection_Remove	1
eSelection_GetState	2

Methods

addChildToSelection()

Adds the specified accessible child of the object to the object's selection. If the specified object is already selected, then it does nothing.

void addChildToSelection(
  in long index
);

Parameters

index

The zero-based accessible child index.

Exceptions thrown

NS_ERROR_FAILURE

If the specified object is not selectable.

clearSelection()

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

void clearSelection();

Parameters

None.

GetSelectedChildren()

Returns an nsIArray of the selected nsIAccessible children.

nsIArray GetSelectedChildren();

Parameters

None.

Return value

An nsIArray.

isChildSelected()

Determines if the current child of this object is selected.

boolean isChildSelected(
  in long index
);

Parameters

index

The zero-based accessible child index.

Return value

True if the child is selected, false if not.

refSelection()

Returns a reference to the accessible object representing the specified selected child of the object.

nsIAccessible refSelection(
  in long index
);

Parameters

index

Zero-based selected accessible child index.

Return value

The selected accessible child.

removeChildFromSelection()

Removes the specified child of the object from the object's selection. If the specified object was not selected, then it does nothing.

void removeChildFromSelection(
  in long index
);

Parameters

index

Zero-based accessible child index.

Exceptions thrown

NS_ERROR_FAILURE

If the specified object is not selectable.

selectAllSelection()

Select all children.

boolean selectAllSelection();

Parameters

None.

Return value

If the object does not accept multiple selection, return false. Otherwise, returns true.