public interface ClickMask
ClickMaskMode
Canvas.showClickMask(com.smartgwt.client.core.Function, com.smartgwt.client.types.ClickMaskMode, com.smartgwt.client.widgets.Canvas[])
Canvas.hideClickMask()
Canvas.clickMaskUp()
EventHandler.targetIsMasked(com.smartgwt.client.widgets.Canvas)