Class DndUtil

Field Detail

• DND_CONNECTOR

  public static final String DND_CONNECTOR

  Resource path for importing dnd connector.

  See Also:

  Constant Field Values

• EFFECT_ALLOWED_ELEMENT_PROPERTY

  public static final String EFFECT_ALLOWED_ELEMENT_PROPERTY

  Property name for storing the EffectAllowed on element level.

  See Also:

  Constant Field Values

• DRAG_SOURCE_DATA_KEY

  public static final String DRAG_SOURCE_DATA_KEY

  Key for storing server side drag data for a DragSource.

  See Also:

  Constant Field Values

• START_LISTENER_REGISTRATION_KEY

  public static final String START_LISTENER_REGISTRATION_KEY

  Key for storing an internal drag start listener registration for a DragSource.

  See Also:

  Constant Field Values

• END_LISTENER_REGISTRATION_KEY

  public static final String END_LISTENER_REGISTRATION_KEY

  Key for storing an internal drag end listener registration for a DragSource.

  See Also:

  Constant Field Values

• DROP_TARGET_ACTIVE_PROPERTY

  public static final String DROP_TARGET_ACTIVE_PROPERTY

  Property name for storing drop target activity data for an element.

  See Also:

  Constant Field Values

• DROP_EFFECT_ELEMENT_PROPERTY

  public static final String DROP_EFFECT_ELEMENT_PROPERTY

  Property name for storing the DropEffect on element level.

  See Also:

  Constant Field Values

Method Detail

• addMobileDndPolyfillIfNeeded

  public static void addMobileDndPolyfillIfNeeded​(Component component)

  Adds the mobile dnd polyfills when a iOS device is used. Calling this is NOOP for non-iOS devices. The polyfills are only loaded once per page.

  Parameters:

  component - the component using dnd

• updateDragSourceActivation

  public static <T extends Component> void updateDragSourceActivation​(DragSource<T> dragSource)

  Triggers drag source activation method in JS connector once when the component has been attached.

  Type Parameters:

  T - the type of the drag source component

  Parameters:

  dragSource - the drag source to update active status on

• updateDropTargetActivation

  public static <T extends Component> void updateDropTargetActivation​(DropTarget<T> dropTarget)

  Triggers drop target activation method in JS connector once when the component has been attached. Will make sure the activation in JS is done again when the component is detached and attached again, because otherwise the element will not be a drop target again.

  Type Parameters:

  T - the type of the drop target component

  Parameters:

  dropTarget - the drop target to update active status on

• reportUsage

  public static void reportUsage()

  Reports DnD feature usage from mixin interfaces.