Source Code for Module pyjamas.ui.HTMLPanel

 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.ui.InnerHTML import InnerHTML 
18   
19  from pyjamas.ui.ComplexPanel import ComplexPanel 
20   
21  HTMLPanel_sUid = 0 
22   
23 -def _check_tagname(element, tagname): 
24      try: 
25          element_tagname = element.nodeName 
26          element_tagname = str(element_tagname).lower() 
27      except: 
28          element_tagname = None 
29      if element_tagname is not None and element_tagname == tagname: 
30          return element 
31      return None 
32   
33 -def getElementsByTagName(element, tagname): 
34      res = [] 
35      el = _check_tagname(element, tagname) 
36      if el: 
37          res.append(el) 
38   
39      it = DOM.walkChildren(element) 
40      while True: 
41          try: 
42              child = it.next() 
43          except StopIteration: 
44              break 
45          el = _check_tagname(child, tagname) 
46          if el: 
47              res.append(el) 
48      return res 
49   
50 -def getElementById(element, id): 
51      try: 
52          element_id = DOM.getAttribute(element, "id") 
53      except: 
54          element_id = None 
55      if element_id is not None and element_id == id: 
56          return element 
57   
58      child = DOM.getFirstChild(element) 
59      while child is not None: 
60          ret = getElementById(child, id) 
61          if ret is not None: 
62              return ret 
63          child = DOM.getNextSibling(child) 
64   
65      return None 
66   
67   
68 -class HTMLPanel(ComplexPanel, InnerHTML): 
69 -    def __init__(self, html, **ka): 
70          # NOTE! don't set a default style on this panel, because the 
71          # HTML might expect to have one already.  Explicitly add a StyleName 
72          # if one is needed. 
73          #if not ka.has_key('StyleName'): ka['StyleName']="gwt-HTMLPanel" 
74          if html: ka['HTML'] = html 
75          element = ka.pop('Element', None) or DOM.createDiv() 
76          self.setElement(element) 
77          ComplexPanel.__init__(self, **ka) 
78   
79 -    def add(self, widget, id): 
80          element = getElementById(self.getElement(), id) 
81          if element is None: 
82              raise Exception("HTMLPanel.add: no element with id '%s'" % str(id)) 
83          ComplexPanel.add(self, widget, element) 
84   
85 -    def findTags(self, tagname): 
86          return getElementsByTagName(self.getElement(), tagname) 
87   
88      @staticmethod 
89 -    def createUniqueId(): 
90          global HTMLPanel_sUid 
91   
92          HTMLPanel_sUid += 1 
93          return "HTMLPanel_%d" % HTMLPanel_sUid 
94   
95  Factory.registerClass('pyjamas.ui.HTMLPanel', 'HTMLPanel', HTMLPanel) 
96