eric6/WebBrowser/ZoomManager/ZoomManager.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
169e65a6787c
parent 7923
91e843545d9a
child 8218
7c09585bd960
permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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91e843545d9a Updated copyright for 2021.
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3 # Copyright (c) 2015 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a manager for site specific zoom level settings.
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8 """
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9
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10 import json
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11
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12 from PyQt5.QtCore import pyqtSignal, QObject
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13
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14 from Utilities.AutoSaver import AutoSaver
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15 import Preferences
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16
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17
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18 class ZoomManager(QObject):
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19 """
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20 Class implementing a manager for site specific zoom level settings.
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21
e1dbd217214a Fixed a few source docu issues (forgotten signals and exceptions).
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22 @signal changed() emitted to indicate a change of the zoom level
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23 """
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24 changed = pyqtSignal()
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25
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26 def __init__(self, parent=None):
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27 """
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28 Constructor
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29
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30 @param parent reference to the parent object (QObject)
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31 """
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32 super(ZoomManager, self).__init__(parent)
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33
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34 self.__zoomDB = {}
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35
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36 self.__saveTimer = AutoSaver(self, self.save)
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37
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38 self.changed.connect(self.__saveTimer.changeOccurred)
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39
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40 self.__loaded = False
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41
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42 def close(self):
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43 """
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44 Public method to close the zoom manager.
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45 """
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46 self.__saveTimer.saveIfNeccessary()
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47
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48 def load(self):
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49 """
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50 Public method to load the bookmarks.
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51 """
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52 if self.__loaded:
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53 return
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54
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55 dbString = Preferences.getWebBrowser("ZoomValuesDB")
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56 if dbString:
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57 try:
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58 db = json.loads(dbString)
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59 self.__zoomDB = db
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60 except ValueError:
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61 # ignore silently
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62 pass
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63
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64 self.__loaded = True
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65
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66 def save(self):
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67 """
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68 Public method to save the zoom values.
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69 """
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70 if not self.__loaded:
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71 return
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72
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73 from WebBrowser.WebBrowserWindow import WebBrowserWindow
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74 if not WebBrowserWindow.isPrivate():
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75 dbString = json.dumps(self.__zoomDB)
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76 Preferences.setWebBrowser("ZoomValuesDB", dbString)
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77
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78 def __keyFromUrl(self, url):
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79 """
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80 Private method to generate a DB key for an URL.
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81
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82 @param url URL to generate a key for
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83 @type QUrl
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84 @return key for the given URL
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85 @rtype str
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86 """
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87 if url.isEmpty():
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88 key = ""
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89 else:
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90 scheme = url.scheme()
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91 host = url.host()
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92 if host:
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93 key = host
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94 elif scheme == "file":
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95 path = url.path()
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96 key = path.rsplit("/", 1)[0]
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97 else:
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98 key = ""
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99
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100 return key
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101
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102 def setZoomValue(self, url, zoomValue):
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103 """
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104 Public method to record the zoom value for the given URL.
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105
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106 Note: Only zoom values not equal 100% are recorded.
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107
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108 @param url URL of the page to remember the zoom value for
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109 @type QUrl
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110 @param zoomValue zoom value for the URL
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111 @type int
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112 """
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113 self.load()
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114
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115 key = self.__keyFromUrl(url)
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116 if not key:
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117 return
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118
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119 if ((zoomValue == 100 and key not in self.__zoomDB) or
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120 (key in self.__zoomDB and self.__zoomDB[key] == zoomValue)):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
121 return
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
122
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
123 if zoomValue == 100:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
124 del self.__zoomDB[key]
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
125 else:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
126 self.__zoomDB[key] = zoomValue
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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127
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
128 self.changed.emit()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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129
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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130 def zoomValue(self, url):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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131 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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132 Public method to get the zoom value for an URL.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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133
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
134 @param url URL of the page to get the zoom value for
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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135 @type QUrl
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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136 @return zoomValue zoom value for the URL
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
137 @rtype int
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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138 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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139 self.load()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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140
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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141 key = self.__keyFromUrl(url)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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142 if not key:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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143 zoom = 100
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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144
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
145 if key in self.__zoomDB:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
146 zoom = self.__zoomDB[key]
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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147 else:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
148 # default zoom value (i.e. no zoom)
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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149 zoom = 100
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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150
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
151 return zoom
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
152
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
153 def clear(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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154 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
155 Public method to clear the saved zoom values.
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
156 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
157 self.__zoomDB = {}
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
158 self.__loaded = True
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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159
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
160 self.changed.emit()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
161
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
162 def removeZoomValue(self, site):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
163 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
164 Public method to remove a zoom value entry.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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165
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
166 @param site web site name
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
167 @type str
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
168 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
169 self.load()
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parents:
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170
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
171 if site in self.__zoomDB:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
172 del self.__zoomDB[site]
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
173 self.changed.emit()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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174
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
175 def allSiteNames(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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176 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
177 Public method to get a list of all site names.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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178
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
179 @return sorted list of all site names
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
180 @rtype list of str
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
181 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
182 self.load()
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parents:
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183
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
184 return sorted(self.__zoomDB.keys())
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parents:
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185
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
186 def sitesCount(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
187 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
188 Public method to get the number of available sites.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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189
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
190 @return number of sites
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
191 @rtype int
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
192 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
193 self.load()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
194
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
195 return len(self.__zoomDB)
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parents:
diff changeset
196
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
197 def siteInfo(self, site):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
198 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
199 Public method to get the zoom value for the site.
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
200
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
201 @param site web site name
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
202 @type str
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
203 @return zoom value for the site
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
204 @rtype int
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
205 """
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
206 self.load()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
207
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
208 if site not in self.__zoomDB:
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
209 return None
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
210
c9982bcd00f8 Added capability to remember the zoom values for each site (incl. a dialog to manage these).
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
211 return self.__zoomDB[site]
4726
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
212
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
213
4971
0f21662c0d2d Added a class to extract all top level domains from a file provided by Mozilla.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4817
diff changeset
214 _ZoomManager = None
4726
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
215
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
216
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
217 def instance():
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
218 """
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
219 Global function to get a reference to the zoom manager and create it, if
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
220 it hasn't been yet.
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
221
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
222 @return reference to the zoom manager object
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
223 @rtype ZoomManager
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
224 """
4971
0f21662c0d2d Added a class to extract all top level domains from a file provided by Mozilla.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4817
diff changeset
225 global _ZoomManager
4726
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
226
4971
0f21662c0d2d Added a class to extract all top level domains from a file provided by Mozilla.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4817
diff changeset
227 if _ZoomManager is None:
0f21662c0d2d Added a class to extract all top level domains from a file provided by Mozilla.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4817
diff changeset
228 _ZoomManager = ZoomManager()
4726
c26e2a2dc0cb Continued porting the web browser.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4631
diff changeset
229
4971
0f21662c0d2d Added a class to extract all top level domains from a file provided by Mozilla.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 4817
diff changeset
230 return _ZoomManager

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