Source Code for Module library.pyjamas.ui.ClickListener

 1  """ 
 2      Copyright (C) 2008, 2009 - Luke Kenneth Casson Leighton <lkcl@lkcl.net> 
 3   
 4  """ 
 5  from pyjamas import DOM 
 6  from pyjamas.ui import Event 
 7   
 8 -class ClickHandler(object): 
 9   
10 -    def __init__(self, preventDefault=False): 
11          self._clickListeners = [] 
12          self._doubleclickListeners = [] 
13          self._clickPreventDefault = preventDefault 
14   
15          self.sinkEvents(Event.ONCLICK) 
16          self.sinkEvents(Event.ONDBLCLICK) 
17   
18 -    def onClick(self, sender=None): 
19          pass 
20   
21 -    def onDoubleClick(self, sender=None): 
22          pass 
23   
24 -    def addDoubleClickListener(self, listener): 
25          self._doubleclickListeners.append(listener) 
26   
27 -    def addClickListener(self, listener): 
28          stylename = self.getStyleName() 
29          if stylename: 
30              self.addStyleName("%s-clickable" % stylename.split()[0]) 
31          self._clickListeners.append(listener) 
32   
33 -    def onBrowserEvent(self, event): 
34          """Listen to events raised by the browser and call the appropriate 
35          method of the listener (widget, ..) object. 
36          """ 
37          type = DOM.eventGetType(event) 
38          if type == "click": 
39              if self._clickPreventDefault: 
40                  DOM.eventPreventDefault(event) 
41              for listener in self._clickListeners: 
42                  if hasattr(listener, "onClick"): 
43                      listener.onClick(self) 
44                  else: 
45                      listener(self) 
46          elif type == "dblclick": 
47              if self._clickPreventDefault: 
48                  DOM.eventPreventDefault(event) 
49              for listener in self._doubleclickListeners: 
50                  if hasattr(listener, "onDoubleClick"): 
51                      listener.onDoubleClick(self) 
52                  else: 
53                      listener(self) 
54   
55 -    def removeClickListener(self, listener): 
56          self._clickListeners.remove(listener) 
57   
58 -    def removeDoubleClickListener(self, listener): 
59          self._doubleclickListeners.remove(listener) 
60   
61 -    def clearClickListener(self): 
62          self._clickListeners[:] = [] 
63   
64 -    def clearDoubleClickListener(self): 
65          self._doubleclickListeners.remove(listener)[:] = [] 
66