Source Code for Module library.pyjamas.ui.TextBoxBase

  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, JS 
 18  from pyjamas.ui.FocusWidget import FocusWidget 
 19  from pyjamas.ui.ChangeListener import ChangeHandler 
 20  from pyjamas.ui.InputListener import InputHandler 
 21  from pyjamas.ui import Event 
 22   
 23 -class TextBoxBase(FocusWidget, ChangeHandler, InputHandler): 
 24      ALIGN_CENTER = "center" 
 25      ALIGN_JUSTIFY = "justify" 
 26      ALIGN_LEFT = "left" 
 27      ALIGN_RIGHT = "right" 
 28   
 29      _props = [("name", "Name", "Name", None), 
 30               ("align", "Text Alignment", "TextAlign", None), 
 31              ] 
 32   
 33 -    def __init__(self, element, **kwargs): 
 34          self.currentEvent = None 
 35   
 36          FocusWidget.__init__(self, element, **kwargs) 
 37          ChangeHandler.__init__(self) 
 38          InputHandler.__init__(self) 
 39   
 40      @classmethod 
 41 -    def _getProps(self): 
 42          return FocusWidget._getProps() + self._props 
 43   
 44 -    def cancelKey(self): 
 45          if self.currentEvent is not None: 
 46              DOM.eventPreventDefault(self.currentEvent) 
 47   
 48 -    def getCursorPos(self): 
 49          element = self.getElement() 
 50          try: 
 51              return element.selectionStart 
 52          except: 
 53              return 0 
 54   
 55 -    def getName(self): 
 56          return DOM.getAttribute(self.getElement(), "name") 
 57   
 58 -    def getSelectedText(self): 
 59          start = self.getCursorPos() 
 60          length = self.getSelectionLength() 
 61          text = self.getText() 
 62          return text[start:start + length] 
 63   
 64 -    def getSelectionLength(self): 
 65          element = self.getElement() 
 66          try: 
 67              return element.selectionEnd - element.selectionStart 
 68          except: 
 69              return 0 
 70   
 71      # have to override Focus here for TextBoxBase 
 72      # because FocusWidget (actually FocusMixin) assumes that 
 73      # CreateFocusable has been used to create the element. 
 74      # in "input box" type scenarios, it hasn't: it's created 
 75      # by TextBox class etc. 
 76 -    def setFocus(self, focused): 
 77          if (focused): 
 78              self.getElement().focus() 
 79          else: 
 80              self.getElement().blur() 
 81   
 82 -    def getText(self): 
 83          return DOM.getAttribute(self.getElement(), "value") 
 84   
 85 -    def selectAll(self): 
 86          length = len(self.getText()) 
 87          if length > 0: 
 88              self.setSelectionRange(0, length) 
 89   
 90 -    def setCursorPos(self, pos): 
 91          self.setSelectionRange(pos, 0) 
 92   
 93 -    def setKey(self, key): 
 94          if self.currentEvent is not None: 
 95              DOM.eventSetKeyCode(self.currentEvent, key) 
 96   
 97 -    def setName(self, name): 
 98          DOM.setAttribute(self.getElement(), "name", name) 
 99   
100 -    def setSelectionRange(self, pos, length): 
101          if length < 0: 
102              # throw new IndexOutOfBoundsException("Length must be a positive integer. Length: " + length); 
103              console.error("Length must be a positive integer. Length: " + length) 
104   
105          if (pos < 0) or (length + pos > len(self.getText())): 
106              #throw new IndexOutOfBoundsException("From Index: " + pos + "  To Index: " + (pos + length) + "  Text Length: " + getText().length()); 
107              console.error("From Index: %d " % pos + "  To Index: %d " % (pos + length) + "  Text Length: %d " % len(self.getText())) 
108   
109          element = self.getElement() 
110          element.setSelectionRange(pos, pos + length) 
111   
112 -    def setText(self, text): 
113          DOM.setAttribute(self.getElement(), "value", text) 
114   
115 -    def setTextAlignment(self, align): 
116          DOM.setStyleAttribute(self.getElement(), "textAlign", align) 
117   
118 -    def getTextAlignment(self, align): 
119          return DOM.getStyleAttribute(self.getElement(), "textAlign") 
120   
121   
122  # TODO: work out if TextBoxBase is appropriate to create in Factory. 
123  # Factory.registerClass('pyjamas.ui.TextBoxBase', 'TextBoxBase', TextBoxBase) 
124