Source Code for Module pyjamas.ui.SimplePanel

 1  # Copyright 2006 James Tauber and contributors 
 2  # Copyright (C) 2009 Luke Kenneth Casson Leighton <lkcl@lkcl.net> 
 3  # 
 4  # Licensed under the Apache License, Version 2.0 (the "License"); 
 5  # you may not use this file except in compliance with the License. 
 6  # You may obtain a copy of the License at 
 7  # 
 8  #     http://www.apache.org/licenses/LICENSE-2.0 
 9  # 
10  # Unless required by applicable law or agreed to in writing, software 
11  # distributed under the License is distributed on an "AS IS" BASIS, 
12  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
13  # See the License for the specific language governing permissions and 
14  # limitations under the License. 
15  from pyjamas import DOM 
16  from pyjamas import Factory 
17  from __pyjamas__ import console 
18  from pyjamas.ui.Panel import Panel 
19   
20 -class SimplePanel(Panel): 
21      """ 
22      A panel which contains a single widget.  Useful if you have an area where 
23      you'd like to be able to replace the widget with another, or if you need to 
24      wrap something in a DIV. 
25      """ 
26 -    def __init__(self, Element=None, **kwargs): 
27          if Element is None: 
28              Element = DOM.createDiv() 
29          self.setElement(Element) 
30          Panel.__init__(self, **kwargs) 
31   
32 -    def add(self, widget): 
33          if self.getWidget() is not None: 
34              console.error("SimplePanel can only contain one child widget") 
35              return 
36          self.setWidget(widget) 
37   
38 -    def getWidget(self): 
39          if len(self.children): 
40              return self.children[0] 
41          return None 
42   
43 -    def remove(self, widget): 
44          if self.getWidget() != widget: 
45              return False 
46          self.disown(widget) 
47          del self.children[0] 
48          return True 
49   
50 -    def getContainerElement(self): 
51          return self.getElement() 
52   
53 -    def setWidget(self, widget): 
54          if self.getWidget() == widget: 
55              return 
56   
57          if self.getWidget() is not None: 
58              self.remove(self.getWidget()) 
59   
60          if widget is not None: 
61              self.adopt(widget, self.getContainerElement()) 
62              self.children.append(widget) 
63   
64  Factory.registerClass('pyjamas.ui.SimplePanel', 'SimplePanel', SimplePanel) 
65