Source Code for Module pyjamas.ui.StackPanel

  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   
 16  from pyjamas import DOM 
 17  from pyjamas import Factory 
 18   
 19  from ComplexPanel import ComplexPanel 
 20  from pyjamas.ui import Event 
 21   
 22 -class StackPanel(ComplexPanel): 
 23   
 24 -    def __init__(self, **kwargs): 
 25          self.body = None 
 26          self.visibleStack = -1 
 27          self.indices = {} 
 28   
 29          if kwargs.has_key('Element'): 
 30              table = kwargs.pop('Element') 
 31              fc = DOM.getFirstChild(table) 
 32              if fc: 
 33                  self.body = fc 
 34              else: 
 35                  self.body = DOM.createTBody() 
 36                  DOM.appendChild(table, self.body) 
 37          else: 
 38              table = DOM.createTable() 
 39              self.body = DOM.createTBody() 
 40              DOM.appendChild(table, self.body) 
 41   
 42          self.setElement(table) 
 43   
 44          if not kwargs.has_key('Spacing'): kwargs['Spacing'] = 0 
 45          if not kwargs.has_key('Padding'): kwargs['Padding'] = 0 
 46          if not kwargs.has_key('StyleName'): kwargs['StyleName'] = "gwt-StackPanel" 
 47   
 48          DOM.sinkEvents(table, Event.ONCLICK) 
 49   
 50          ComplexPanel.__init__(self, **kwargs) 
 51   
 52 -    def add(self, widget, stackText="", asHTML=False): 
 53          widget.removeFromParent() 
 54          index = self.getWidgetCount() 
 55   
 56          tr = DOM.createTR() 
 57          td = DOM.createTD() 
 58          DOM.appendChild(self.body, tr) 
 59          DOM.appendChild(tr, td) 
 60          self.setStyleName(td, "gwt-StackPanelItem", True) 
 61          self._setIndex(td, index) 
 62          DOM.setAttribute(td, "height", "1px") 
 63   
 64          tr = DOM.createTR() 
 65          td = DOM.createTD() 
 66          DOM.appendChild(self.body, tr) 
 67          DOM.appendChild(tr, td) 
 68          DOM.setAttribute(td, "height", "100%") 
 69          DOM.setAttribute(td, "vAlign", "top") 
 70   
 71          ComplexPanel.add(self, widget, td) 
 72   
 73          self.setStackVisible(index, False) 
 74          if self.visibleStack == -1: 
 75              self.showStack(0) 
 76   
 77          if stackText != "": 
 78              self.setStackText(self.getWidgetCount() - 1, stackText, asHTML) 
 79   
 80 -    def onBrowserEvent(self, event): 
 81          if DOM.eventGetType(event) == "click": 
 82              index = self.getDividerIndex(DOM.eventGetTarget(event)) 
 83              if index != -1: 
 84                  self.showStack(index) 
 85   
 86      # also callable as remove(child) and remove(index) 
 87 -    def remove(self, child, index=None): 
 88          if index is None: 
 89              if isinstance(child, int): 
 90                  index = child 
 91                  child = self.getWidget(child) 
 92              else: 
 93                  index = self.getWidgetIndex(child) 
 94   
 95          if child.getParent() != self: 
 96              return False 
 97   
 98          if self.visibleStack == index: 
 99              self.visibleStack = -1 
100          elif self.visibleStack > index: 
101              self.visibleStack -= 1 
102   
103          rowIndex = 2 * index 
104          tr = DOM.getChild(self.body, rowIndex) 
105          DOM.removeChild(self.body, tr) 
106          tr = DOM.getChild(self.body, rowIndex) 
107          DOM.removeChild(self.body, tr) 
108          ComplexPanel.remove(self, child) 
109          rows = self.getWidgetCount() * 2 
110   
111          #for (int i = rowIndex; i < rows; i = i + 2) { 
112          for i in range(rowIndex, rows, 2): 
113              childTR = DOM.getChild(self.body, i) 
114              td = DOM.getFirstChild(childTR) 
115              curIndex = self._getIndex(td) 
116              self._setIndex(td, index) 
117              index += 1 
118   
119          return True 
120   
121 -    def _setIndex(self, td, index): 
122          self.indices[td] = index 
123   
124 -    def _getIndex(self, td): 
125          return self.indices.get(td) 
126   
127 -    def setStackText(self, index, text, asHTML=False): 
128          if index >= self.getWidgetCount(): 
129              return 
130   
131          td = DOM.getChild(DOM.getChild(self.body, index * 2), 0) 
132          if asHTML: 
133              DOM.setInnerHTML(td, text) 
134          else: 
135              DOM.setInnerText(td, text) 
136   
137 -    def showStack(self, index): 
138          if (index >= self.getWidgetCount()) or (index == self.visibleStack): 
139              return 
140   
141          if self.visibleStack >= 0: 
142              self.setStackVisible(self.visibleStack, False) 
143   
144          self.visibleStack = index 
145          self.setStackVisible(self.visibleStack, True) 
146   
147 -    def getDividerIndex(self, elem): 
148          while (elem is not None) and not DOM.compare(elem, self.getElement()): 
149              expando = self._getIndex(elem) 
150              if expando is not None: 
151                  return int(expando) 
152   
153              elem = DOM.getParent(elem) 
154   
155          return -1 
156   
157 -    def setStackVisible(self, index, visible): 
158          tr = DOM.getChild(self.body, (index * 2)) 
159          if tr is None: 
160              return 
161   
162          td = DOM.getFirstChild(tr) 
163          self.setStyleName(td, "gwt-StackPanelItem-selected", visible) 
164   
165          tr = DOM.getChild(self.body, (index * 2) + 1) 
166          self.setVisible(tr, visible) 
167          self.getWidget(index).setVisible(visible) 
168   
169 -    def getSelectedIndex(self): 
170          return self.visibleStack 
171   
172  Factory.registerClass('pyjamas.ui.StackPanel', StackPanel) 
173