add click override example

examples/clickoverride/Override.py

@@ -0,0 +1,61 @@
+""" This example shows how to check in onBrowserEvent whether the
+    event targets a child, and if so refuse to handle it, so that
+    the child widget will be the only widget dealing with it.
+
+    see _event_targets_title() for details.
+"""
+
+import pyjd # dummy in pyjs
+
+from pyjamas.ui.VerticalPanel import VerticalPanel
+from pyjamas.ui.HTML import HTML
+from pyjamas.ui.ClickListener import ClickHandler
+from pyjamas.ui.RootPanel import RootPanel
+from pyjamas.ui import Event
+from pyjamas import log
+from pyjamas import DOM
+
+class Board(VerticalPanel, ClickHandler):
+    def __init__(self):
+        """ Standard initialiser.
+        """
+        VerticalPanel.__init__(self)
+        ClickHandler.__init__(self)
+        self.addClickListener(self)
+        self.title=Text('Board')
+        self.title.setzIndex(100)
+        self.add(self.title)
+        self.setSize("100%", "50%")        
+        self.setBorderWidth(1)
+
+    def onClick(self, sender):
+        log.writebr('Text'+str(sender))
+
+    def _event_targets_title(self, event):
+        target = DOM.eventGetTarget(event)
+        return target and DOM.isOrHasChild(self.title.getElement(), target)
+
+    def onBrowserEvent(self, event):
+        etype = DOM.eventGetType(event)
+        if etype == "click":
+            if self._event_targets_title(event):
+                return
+        ClickHandler.onBrowserEvent(self, event)
+
+
+class Text(HTML, ClickHandler):
+    def __init__(self, text):
+        HTML.__init__(self, text)
+        ClickHandler.__init__(self, preventDefault=True)
+        self.addClickListener(self)        
+
+    def onClick(self, sender):
+        log.writebr('Text'+str(sender))
+
+
+if __name__ == "__main__":
+    pyjd.setup("./Override.html")
+    board = Board()
+    RootPanel().add(board)
+    pyjd.run()
+

library/pyjamas/ui/__init__.py

@@ -78,14 +78,7 @@ def __init__(self, **kwargs):
 
     def applyValues(self, **kwargs):
 
-        if not kwargs:
-            return
-        k = kwargs.keys()
-        l = len(k)
-        i = -1
-        while i < l-1:
-            i += 1
-            prop = k[i]
+        for (prop, args) in kwargs.items():
             fn = getattr(self, "set%s" % prop, None)
             if not fn:
                 return