Source Code for Module pyjamas.ui.FlowTabBar

  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.Composite import Composite 
 18  from pyjamas.ui import Event 
 19  from pyjamas.ui.HTML import HTML 
 20  from pyjamas.ui.Label import Label 
 21  from pyjamas.ui.FlowPanel import FlowPanel 
 22  from pyjamas.ui.ClickDelegatePanel import ClickDelegatePanel 
 23  from pyjamas.ui import HasAlignment 
 24   
 25 -class FlowTabBar(Composite): 
 26   
 27      STYLENAME_DEFAULT = "gwt-TabBarItem" 
 28   
 29 -    def __init__(self, **kwargs): 
 30   
 31          if not kwargs.has_key('StyleName'): kwargs['StyleName']="gwt-TabBar" 
 32   
 33          # this is awkward: FlowPanel is the composite, 
 34          # so we either the element here, and pass it in to FlowPanel. 
 35          element = None 
 36          if kwargs.has_key('Element'): 
 37              element = kwargs.pop('Element') 
 38   
 39          self.panel = FlowPanel(Element=element) 
 40          self.selectedTab = None 
 41          self.tabListeners = [] 
 42   
 43          #self.panel.setVerticalAlignment(HasAlignment.ALIGN_BOTTOM) 
 44   
 45          first = HTML("&nbsp;", True) 
 46          rest = HTML("&nbsp;", True) 
 47          first.setStyleName("gwt-TabBarFirst") 
 48          rest.setStyleName("gwt-TabBarRest") 
 49          first.setHeight("100%") 
 50          rest.setHeight("100%") 
 51   
 52          self.panel.add(first) 
 53          self.panel.add(rest) 
 54          first.setHeight("100%") 
 55          #self.panel.setCellHeight(first, "100%") 
 56          #self.panel.setCellWidth(rest, "100%") 
 57   
 58          Composite.__init__(self, self.panel, **kwargs) 
 59          self.sinkEvents(Event.ONCLICK) 
 60   
 61 -    def addTab(self, text, asHTML=False): 
 62          self.insertTab(text, asHTML, self.getTabCount()) 
 63   
 64 -    def addTabListener(self, listener): 
 65          self.tabListeners.append(listener) 
 66   
 67 -    def getSelectedTab(self): 
 68          if self.selectedTab is None: 
 69              return -1 
 70          return self.panel.getWidgetIndex(self.selectedTab) - 1 
 71   
 72 -    def getTabCount(self): 
 73          return self.panel.getWidgetCount() - 2 
 74   
 75 -    def getTabHTML(self, index): 
 76          if index >= self.getTabCount(): 
 77              return None 
 78          delPanel = self.panel.getWidget(index + 1) 
 79          focusablePanel = delPanel.getFocusablePanel() 
 80          widget = focusablePanel.getWidget() 
 81          if hasattr(widget, "getHTML"): 
 82              return widget.getHTML() 
 83          elif hasattr(widget, "getText"): # assume it's a Label if it has getText 
 84              return widget.getText() 
 85          else: 
 86              fpe = DOM.getParent(self.focusablePanel.getElement()) 
 87              return DOM.getInnerHTML(fpe) 
 88   
 89 -    def createTabTextWrapper(self): 
 90          return None 
 91   
 92 -    def insertTab(self, text, asHTML, beforeIndex=None): 
 93          """ 1st arg can, instead of being 'text', be a widget 
 94          """ 
 95          if beforeIndex is None: 
 96              beforeIndex = asHTML 
 97              asHTML = False 
 98   
 99          if (beforeIndex < 0) or (beforeIndex > self.getTabCount()): 
100              #throw new IndexOutOfBoundsException(); 
101              pass 
102   
103          if isinstance(text, basestring): 
104              if asHTML: 
105                  item = HTML(text) 
106              else: 
107                  item = Label(text) 
108              item.setWordWrap(False) 
109          else: 
110              # passing in a widget, it's expected to have its own style 
111              item = text 
112   
113          self.insertTabWidget(item, beforeIndex) 
114   
115 -    def insertTabWidget(self, widget, beforeIndex): 
116   
117          delWidget = ClickDelegatePanel(self, widget, self, self) 
118          delWidget.setStyleName(self.STYLENAME_DEFAULT) 
119   
120          focusablePanel = delWidget.getFocusablePanel() 
121          self.panel.insert(delWidget, self.panel.getElement(), beforeIndex + 1) 
122   
123          parent = DOM.getParent(delWidget.getElement()) 
124          #DOM.setStyleAttribute(parent, "flow", "left") 
125          #DOM.setStyleAttribute(parent, "display", "inline") 
126          self.setStyleName(parent, 
127                            self.STYLENAME_DEFAULT + "-wrapper", True) 
128   
129          #print "insertTabWidget", DOM.getParent(delWidget.getElement()), DOM.getAttribute(DOM.getParent(delWidget.getElement()), "className") 
130   
131   
132 -    def onClick(self, sender=None): 
133          for i in range(1, self.panel.getWidgetCount() - 1): 
134              if DOM.isOrHasChild(self.panel.getWidget(i).getElement(), 
135                                  sender.getElement()): 
136                  return self.selectTab(i - 1) 
137          return False 
138   
139 -    def removeTab(self, index): 
140          self.checkTabIndex(index) 
141   
142          toRemove = self.panel.getWidget(index + 1) 
143          if toRemove == self.selectedTab: 
144              self.selectedTab = None 
145          self.panel.remove(toRemove) 
146   
147 -    def removeTabListener(self, listener): 
148          self.tabListeners.remove(listener) 
149   
150 -    def selectTab(self, index): 
151          self.checkTabIndex(index) 
152   
153          for listener in self.tabListeners: 
154              if not listener.onBeforeTabSelected(self, index): 
155                  return False 
156   
157          self.setSelectionStyle(self.selectedTab, False) 
158          if index == -1: 
159              self.selectedTab = None 
160              return True 
161   
162          self.selectedTab = self.panel.getWidget(index + 1) 
163          self.setSelectionStyle(self.selectedTab, True) 
164   
165          for listener in self.tabListeners: 
166              listener.onTabSelected(self, index) 
167   
168          return True 
169   
170 -    def checkTabIndex(self, index): 
171          if (index < -1) or (index >= self.getTabCount()): 
172              #throw new IndexOutOfBoundsException(); 
173              pass 
174   
175 -    def setSelectionStyle(self, item, selected): 
176          if item is not None: 
177              if selected: 
178                  item.addStyleName("gwt-TabBarItem-selected") 
179                  self.setStyleName(DOM.getParent(item.getElement()), 
180                                  "gwt-TabBarItem-wrapper-selected", True) 
181   
182              else: 
183                  item.removeStyleName("gwt-TabBarItem-selected") 
184                  self.setStyleName(DOM.getParent(item.getElement()), 
185                                  "gwt-TabBarItem-wrapper-selected", False) 
186   
187  Factory.registerClass('pyjamas.ui.FlowTabBar', 'FlowTabBar', FlowTabBar) 
188