Source Code for Module library.pyjamas.dnd.DragEvent

  1  from pyjamas import DOM 
  2   
  3 -class DragEvent(object): 
  4      """ 
  5      emulates a drag event. 
  6      http://dev.w3.org/html5/spec/dnd.html#dragevent 
  7      """ 
  8      relatedTarget = None 
  9      detail = 0 
 10      returnValue = True 
 11 -    def __init__(self, evt, type, dataTransfer, target=None): 
 12          self.evt = evt 
 13          self.type = type 
 14          self.setTarget(target) 
 15          self.dataTransfer = dataTransfer 
 16          self.canBubble = True 
 17          if self.type in ['dragleave', 'dragend']: 
 18              self.cancelable = False 
 19          else: 
 20              self.cancelable = True 
 21   
 22 -    def setTarget(self, target=None): 
 23          if target is not None: 
 24              self.target = target 
 25          else: 
 26              self.target = DOM.eventGetTarget(self.evt) 
 27   
 28      # rather than copying a bunch of attributes on init, we provide a bunch 
 29      # of property statements.  These properties hardly ever get looked at 
 30      # during dnd events anyway, but they're there if we need them. 
 31   
 32 -    def stopPropagation(self): 
 33          self.evt.stopPropagation() 
 34   
 35      @property 
 36 -    def screenX(self): 
 37          return self.evt.screenX 
 38   
 39      @property 
 40 -    def screenY(self): 
 41          return self.evt.screenY 
 42   
 43      @property 
 44 -    def pageX(self): 
 45          return self.evt.pageX 
 46   
 47      @property 
 48 -    def pageY(self): 
 49          return self.evt.pageY 
 50   
 51      @property 
 52 -    def clientX(self): 
 53          return self.evt.clientX 
 54   
 55      @property 
 56 -    def clientY(self): 
 57          return self.evt.clientY 
 58   
 59      @property 
 60 -    def altKey(self): 
 61          return self.evt.altKey 
 62   
 63      @property 
 64 -    def ctrlKey(self): 
 65          return self.evt.ctrlKey 
 66   
 67      @property 
 68 -    def shiftKey(self): 
 69          return self.evt.shiftKey 
 70   
 71      @property 
 72 -    def metaKey(self): 
 73          return self.evt.metaKey 
 74   
 75      @property 
 76 -    def button(self): 
 77          return self.evt.button 
 78   
 79 -    def preventDefault(self): 
 80          """ 
 81          ie6 sets returnValue to False, so we do, too. 
 82          """ 
 83          self.returnValue = False 
 84   
 85 -    def initDragEvent(self, type, canBubble, cancelable, dummy, detail, screenX, 
 86                        screenY, clientX, clientY, ctrlKey, altKey, shiftKey, 
 87                        metaKey, button, relatedTarget, dataTransfer): 
 88          """ 
 89          Just raise NotImplemented.  Provided only for completeness with the 
 90          Interface. 
 91          """ 
 92          raise NotImplemented("Instanciate this class with a mouse event.") 
 93  #        self.type = type 
 94  #        self.canBubble = canBubble 
 95  #        self.cancelable = cancelable 
 96  #        self.dummy = dummy 
 97  #        self.detail = detail 
 98  #        self.screenX = screenX 
 99  #        self.screenY = screenY 
100  #        self.clientX = clientX 
101  #        self.clientY = clientY 
102  #        self.ctrlKey = ctrlKey 
103  #        self.altKey = altKey 
104  #        self.shiftKey = shiftKey 
105  #        self.metaKey = metaKey 
106  #        self.button = button 
107  #        self.relatedTarget = relatedTarget 
108  #        self.dataTransfer = dataTransfer 
109