Sun, 10 Feb 2013 18:31:31 +0100
Continued implementing the delayed import.
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1  # * coding: utf8 * 
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2  
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Updated copyright for 2013.
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3  # Copyright (c) 2012  2013 Detlev Offenbach <detlev@dieoffenbachs.de> 
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4  # 
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5  
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6  """ 
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7  Module implementing the speed dial. 
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8  """ 
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9  
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10  import os 
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11  
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12  from PyQt4.QtCore import pyqtSignal, pyqtSlot, QObject, QCryptographicHash, QByteArray, \ 
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13  QUrl, qWarning 
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14  from PyQt4.QtWebKit import QWebPage 
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15  
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16  from E5Gui import E5MessageBox 
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17  
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18  from Utilities.AutoSaver import AutoSaver 
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19  import Utilities 
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20  
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21  
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22  class SpeedDial(QObject): 
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23  """ 
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24  Class implementing the speed dial. 
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25  
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26  @signal pagesChanged() emitted after the list of pages changed 
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27  @signal speedDialSaved() emitted after the speed dial data was saved 
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28  """ 
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29  pagesChanged = pyqtSignal() 
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30  speedDialSaved = pyqtSignal() 
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31  
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32  def __init__(self, parent=None): 
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33  """ 
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34  Constructor 
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35  
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36  @param parent reference to the parent object (QObject) 
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37  """ 
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38  super().__init__(parent) 
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39  
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40  self.__regenerateScript = True 
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41  
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42  self.__webPages = [] 
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43  self.__webFrames = [] 
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44  
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45  self.__initialScript = "" 
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46  self.__thumbnailsDirectory = "" 
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47  
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48  self.__thumbnailers = [] 
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49  
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50  self.__initialize() 
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51  
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52  self.pagesChanged.connect(self.__pagesChanged) 
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53  
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54  self.__saveTimer = AutoSaver(self, self.save) 
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55  self.pagesChanged.connect(self.__saveTimer.changeOccurred) 
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56  
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57  def addWebFrame(self, frame): 
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58  """ 
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59  Public method to add a web frame. 
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60  
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61  @param frame reference to the frame to be added (QWebFrame) 
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62  """ 
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63  if frame not in self.__webFrames: 
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64  self.__webFrames.append(frame) 
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65  
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66  def addPage(self, url, title): 
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67  """ 
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68  Public method to add a page for the given data. 
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69  
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70  @param url URL of the page (QUrl) 
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71  @param title title of the page (string) 
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72  """ 
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73  if url.isEmpty(): 
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74  return 
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75  
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76  from .Page import Page 
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77  page = Page(url.toString(), title) 
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78  self.__webPages.append(page) 
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79  
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80  self.pagesChanged.emit() 
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81  
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82  def removePage(self, url): 
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83  """ 
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84  Public method to remove a page. 
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85  
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86  @param url URL of the page (QUrl) 
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87  """ 
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88  page = self.pageForUrl(url) 
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89  if not page.url: 
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90  return 
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91  
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92  self.removeImageForUrl(page.url) 
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93  self.__webPages.remove(page) 
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94  
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95  self.pagesChanged.emit() 
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96  
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97  def __imageFileName(self, url): 
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98  """ 
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99  Private method to generate the image file name for a URL. 
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100  
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101  @param url URL to generate the file name from (string) 
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102  @return name of the image file (string) 
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103  """ 
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104  return os.path.join(self.__thumbnailsDirectory, 
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105  str(QCryptographicHash.hash(QByteArray(url.encode("utf8")), 
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106  QCryptographicHash.Md5).toHex(), encoding="utf8") + ".png") 
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107  
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108  def initialScript(self): 
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109  """ 
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110  Public method to get the 'initial' JavaScript script. 
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111  
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112  @return initial JavaScript script (string) 
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113  """ 
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114  if self.__regenerateScript: 
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115  self.__regenerateScript = False 
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116  self.__initialScript = "" 
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117  
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118  for page in self.__webPages: 
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119  if page.broken: 
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120  imgSource = "qrc:icons/brokenPage.png" 
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121  else: 
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122  imgSource = self.__imageFileName(page.url) 
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123  if not os.path.exists(imgSource): 
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124  self.loadThumbnail(page.url) 
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125  imgSource = "qrc:icons/loading.gif" 
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126  
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127  if not page.url: 
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128  imgSource = "" 
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129  else: 
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130  imgSource = QUrl.fromLocalFile(imgSource).toString() 
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131  
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132  self.__initialScript += "addBox('{0}', '{1}', '{2}');\n".format( 
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133  page.url, page.title, imgSource) 
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134  
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135  return self.__initialScript 
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136  
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137  def getFileName(self): 
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138  """ 
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139  Public method to get the file name of the user agents file. 
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140  
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141  @return name of the user agents file (string) 
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142  """ 
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143  return os.path.join(Utilities.getConfigDir(), "browser", "speedDial.xml") 
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144  
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145  def __initialize(self): 
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146  """ 
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147  Private method to initialize the speed dial. 
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148  """ 
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149  self.__thumbnailsDirectory = os.path.join( 
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150  Utilities.getConfigDir(), "browser", "thumbnails") 
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151  # Create directory if it does not exist yet 
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152  if not os.path.exists(self.__thumbnailsDirectory): 
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153  os.makedirs(self.__thumbnailsDirectory) 
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154  
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155  self.__load() 
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156  
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157  def reload(self): 
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158  """ 
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159  Public method to reload the speed dial data. 
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160  """ 
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161  self.__load() 
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162  
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163  def __load(self): 
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164  """ 
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165  Private method to load the speed dial configuration. 
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166  """ 
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167  allPages, pagesPerRow, speedDialSize = [], 0, 0 
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168  
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169  speedDialFile = self.getFileName() 
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170  if os.path.exists(speedDialFile): 
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171  from .SpeedDialReader import SpeedDialReader 
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172  reader = SpeedDialReader() 
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173  allPages, pagesPerRow, speedDialSize = reader.read(speedDialFile) 
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174  
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175  self.__pagesPerRow = pagesPerRow if pagesPerRow else 4 
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176  self.__speedDialSize = speedDialSize if speedDialSize else 231 
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177  
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178  if allPages: 
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179  self.__webPages = allPages 
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180  self.pagesChanged.emit() 
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181  else: 
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182  allPages = \ 
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183  'url:"http://ericide.pythonprojects.org/"title:"Eric Web Site";'\ 
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184  'url:"http://www.riverbankcomputing.com/"title:"PyQt4 Web Site";'\ 
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185  'url:"http://qt.digia.com/"title:"Qt Web Site";'\ 
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186  'url:"http://blog.qt.digia.com/"title:"Qt Blog";'\ 
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187  'url:"http://www.python.org"title:"Python Language Website";'\ 
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188  'url:"http://www.google.com"title:"Google";' 
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189  self.changed(allPages) 
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190  
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191  def save(self): 
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192  """ 
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193  Public method to save the speed dial configuration. 
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194  """ 
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195  from .SpeedDialWriter import SpeedDialWriter 
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196  speedDialFile = self.getFileName() 
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197  writer = SpeedDialWriter() 
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198  if not writer.write(speedDialFile, 
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199  self.__webPages, self.__pagesPerRow, self.__speedDialSize): 
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200  E5MessageBox.critical(None, 
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201  self.trUtf8("Saving Speed Dial data"), 
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202  self.trUtf8("""<p>Speed Dial data could not be saved to <b>{0}</b></p>""" 
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203  ).format(speedDialFile)) 
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204  else: 
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205  self.speedDialSaved.emit() 
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206  
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207  def close(self): 
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208  """ 
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209  Public method to close the user agents manager. 
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210  """ 
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211  self.__saveTimer.saveIfNeccessary() 
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212  
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213  def pageForUrl(self, url): 
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214  """ 
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215  Public method to get the page for the given URL. 
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216  
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217  @param url URL to be searched for (QUrl) 
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218  @return page for the URL (Page) 
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219  """ 
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220  urlString = url.toString() 
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221  for page in self.__webPages: 
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222  if page.url == urlString: 
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223  return page 
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224  
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225  from .Page import Page 
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226  return Page() 
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227  
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228  def urlForShortcut(self, key): 
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229  """ 
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230  Public method to get the URL for the given shortcut key. 
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231  
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232  @param key shortcut key (integer) 
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233  @return URL for the key (QUrl) 
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234  """ 
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235  if key < 0 or len(self.__webPages) <= key: 
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236  return QUrl() 
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237  
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238  return QUrl.fromEncoded(self.__webPages[key].url.encode("utf8")) 
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239  
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240  @pyqtSlot(str) 
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241  def changed(self, allPages): 
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242  """ 
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243  Public slot to react on changed pages. 
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244  
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245  @param allPages string giving all pages (string) 
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246  """ 
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247  if not allPages: 
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248  return 
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249  
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250  entries = allPages.split('";') 
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251  self.__webPages = [] 
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252  
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253  from .Page import Page 
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254  for entry in entries: 
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255  if not entry: 
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256  continue 
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257  
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258  tmp = entry.split('"') 
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259  if len(tmp) == 2: 
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260  broken = False 
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261  elif len(tmp) == 3: 
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262  broken = "brokenPage" in tmp[2][5:] 
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263  else: 
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264  continue 
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265  
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266  page = Page(tmp[0][5:], tmp[1][7:], broken) 
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267  self.__webPages.append(page) 
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268  
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269  self.pagesChanged.emit() 
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270  
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271  @pyqtSlot(str) 
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272  @pyqtSlot(str, bool) 
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273  def loadThumbnail(self, url, loadTitle=False): 
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274  """ 
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275  Public slot to load a thumbnail of the given URL. 
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276  
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277  @param url URL of the thumbnail (string) 
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278  @param loadTitle flag indicating to get the title for the thumbnail 
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279  from the site (boolean) 
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280  """ 
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281  if not url: 
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282  return 
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283  
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284  from .PageThumbnailer import PageThumbnailer 
1670
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285  thumbnailer = PageThumbnailer(self) 
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286  thumbnailer.setUrl(QUrl.fromEncoded(url.encode("utf8"))) 
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287  thumbnailer.setLoadTitle(loadTitle) 
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288  thumbnailer.thumbnailCreated.connect(self.__thumbnailCreated) 
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289  self.__thumbnailers.append(thumbnailer) 
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290  
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291  thumbnailer.start() 
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292  
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293  @pyqtSlot(str) 
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294  def removeImageForUrl(self, url): 
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295  """ 
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296  Public slot to remove the image for a URL. 
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297  
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298  @param url URL to remove the image for (string) 
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299  """ 
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300  fileName = self.__imageFileName(url) 
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301  if os.path.exists(fileName): 
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302  os.remove(fileName) 
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303  
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304  @pyqtSlot(str, result=str) 
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305  def urlFromUserInput(self, url): 
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306  """ 
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307  Public slot to get the URL from user input. 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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308  
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309  @param url URL entered by the user (string) 
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310  @return sanitized URL (string) 
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311  """ 
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312  return QUrl.fromUserInput(url).toString() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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313  
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314  @pyqtSlot(int) 
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315  def setPagesInRow(self, count): 
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316  """ 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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317  Public slot to set the number of pages per row. 
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318  
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319  @param count number of pages per row (integer) 
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320  """ 
1699
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321  self.__pagesPerRow = count 
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322  self.__saveTimer.changeOccurred() 
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323  
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324  def pagesInRow(self): 
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325  """ 
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326  Public method to get the number of dials per row. 
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327  
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328  @return number of dials per row (integer) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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329  """ 
1699
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330  return self.__pagesPerRow 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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331  
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332  @pyqtSlot(int) 
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333  def setSdSize(self, size): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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334  """ 
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335  Public slot to set the size of the speed dial. 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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336  
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337  @param size size of the speed dial (integer) 
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338  """ 
1699
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339  self.__speedDialSize = size 
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340  self.__saveTimer.changeOccurred() 
1670
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341  
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342  def sdSize(self): 
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343  """ 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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344  Public method to get the speed dial size. 
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345  
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346  @return speed dial size (integer) 
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347  """ 
1699
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348  return self.__speedDialSize 
1670
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349  
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350  def __thumbnailCreated(self, image): 
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351  """ 
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352  Private slot to handle the creation of a thumbnail image. 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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353  
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354  @param image thumbnail image (QPixmap) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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355  """ 
2403
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Continued implementing the delayed import.
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diff
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356  from .PageThumbnailer import PageThumbnailer 
1670
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357  thumbnailer = self.sender() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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358  if not isinstance(thumbnailer, PageThumbnailer) or \ 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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359  thumbnailer not in self.__thumbnailers: 
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360  return 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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361  
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362  loadTitle = thumbnailer.loadTitle() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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363  title = thumbnailer.title() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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364  url = thumbnailer.url().toString() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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365  fileName = self.__imageFileName(url) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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366  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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367  if image.isNull(): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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368  fileName = "qrc:icons/brokenPage.png" 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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369  title = self.trUtf8("Unable to load") 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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370  loadTitle = True 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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371  page = self.pageForUrl(thumbnailer.url()) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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372  page.broken = True 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

373  else: 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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374  if not image.save(fileName): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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375  qWarning("SpeedDial.__thumbnailCreated: Cannot save thumbnail to {0}" 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

376  .format(fileName)) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

377  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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diff
changeset

378  fileName = QUrl.fromLocalFile(fileName).toString() 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

379  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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diff
changeset

380  self.__regenerateScript = True 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

381  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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parents:
diff
changeset

382  for frame in self.__cleanFrames(): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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changeset

383  frame.evaluateJavaScript("setImageToUrl('{0}', '{1}');".format( 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

384  url, fileName)) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

385  if loadTitle: 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
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parents:
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changeset

386  frame.evaluateJavaScript("setTitleToUrl('{0}', '{1}');".format( 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

387  url, title)) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

388  
2318
3a3ee7cc2ad6
Changed some signal handlings (disconnect).
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
2302
diff
changeset

389  ## thumbnailer.thumbnailCreated.disconnect(self.__thumbnailCreated) 
3a3ee7cc2ad6
Changed some signal handlings (disconnect).
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
2302
diff
changeset

390  thumbnailer.deleteLater() 
1670
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

391  self.__thumbnailers.remove(thumbnailer) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

392  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

393  def __cleanFrames(self): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

394  """ 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

395  Private method to clean all frames. 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

396  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

397  @return list of speed dial frames (list of QWebFrame) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

398  """ 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

399  frames = [] 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

400  
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

401  for frame in self.__webFrames[:]: 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

402  if frame.url().toString() == "eric:speeddial": 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

403  frames.append(frame) 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

404  else: 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

405  self.__webFrames.remove(frame) 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

406  
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

407  return frames 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

408  
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

409  def __pagesChanged(self): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

410  """ 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

411  Private slot to react on a change of the pages configuration. 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

412  """ 
1699
10706f6ad9d2
Changed the speedial to store the data into an XML file.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
1670
diff
changeset

413  # update all speed dial pages 
1670
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

414  self.__regenerateScript = True 
6fd889391d2c
Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

415  for frame in self.__cleanFrames(): 
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Added a Speed Dial to the web browser including the capability to select the first ten pages by pressing Meta+1 to Meta+0.
Detlev Offenbach <detlev@dieoffenbachs.de>
parents:
diff
changeset

416  frame.page().triggerAction(QWebPage.Reload) 