E5Gui/E5Application.py

Wed, 02 Jan 2013 10:31:48 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 02 Jan 2013 10:31:48 +0100
changeset 2302
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parent 2084
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child 2525
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child 2990
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child 3163
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permissions
-rw-r--r--

Updated copyright for 2013.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2013 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 Class implementing a specialized application class.
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8 """
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9
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10 from PyQt4.QtCore import QCoreApplication
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11 from PyQt4.QtGui import QApplication
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12
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13
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14 class E5Application(QApplication):
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15 """
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16 Eric application class with an object registry.
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17 """
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18 def __init__(self, argv):
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19 """
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20 Constructor
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21
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22 @param argv command line arguments
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23 """
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24 super().__init__(argv)
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26 self.__objectRegistry = {}
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27 self.__pluginObjectRegistry = {}
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28
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29 def registerObject(self, name, object):
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30 """
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31 Public method to register an object in the object registry.
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32
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33 @param name name of the object (string)
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34 @param object reference to the object
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35 @exception KeyError raised when the given name is already in use
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36 """
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37 if name in self.__objectRegistry:
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38 raise KeyError('Object "{0}" already registered.'.format(name))
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39 else:
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40 self.__objectRegistry[name] = object
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41
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42 def getObject(self, name):
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43 """
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44 Public method to get a reference to a registered object.
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45
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46 @param name name of the object (string)
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47 @return reference to the registered object
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48 @exception KeyError raised when the given name is not known
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49 """
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50 if name in self.__objectRegistry:
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51 return self.__objectRegistry[name]
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52 else:
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53 raise KeyError('Object "{0}" is not registered.'.format(name))
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55 def registerPluginObject(self, name, object, pluginType=None):
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56 """
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57 Public method to register a plugin object in the object registry.
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58
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59 @param name name of the plugin object (string)
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60 @param object reference to the plugin object
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61 @keyparam pluginType type of the plugin object (string)
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62 @exception KeyError raised when the given name is already in use
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63 """
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64 if name in self.__pluginObjectRegistry:
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65 raise KeyError('Pluginobject "{0}" already registered.'.format(name))
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66 else:
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67 self.__pluginObjectRegistry[name] = (object, pluginType)
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68
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69 def unregisterPluginObject(self, name):
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70 """
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71 Public method to unregister a plugin object in the object registry.
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72
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73 @param name name of the plugin object (string)
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74 """
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75 if name in self.__pluginObjectRegistry:
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76 del self.__pluginObjectRegistry[name]
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77
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78 def getPluginObject(self, name):
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79 """
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80 Public method to get a reference to a registered plugin object.
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81
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82 @param name name of the plugin object (string)
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83 @return reference to the registered plugin object
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84 @exception KeyError raised when the given name is not known
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85 """
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86 if name in self.__pluginObjectRegistry:
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87 return self.__pluginObjectRegistry[name][0]
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88 else:
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89 raise KeyError('Pluginobject "{0}" is not registered.'.format(name))
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90
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91 def getPluginObjects(self):
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92 """
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93 Public method to get a list of (name, reference) pairs of all
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94 registered plugin objects.
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95
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96 @return list of (name, reference) pairs
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97 """
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98 objects = []
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99 for name in self.__pluginObjectRegistry:
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100 objects.append((name, self.__pluginObjectRegistry[name][0]))
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101 return objects
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102
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103 def getPluginObjectType(self, name):
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104 """
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105 Public method to get the type of a registered plugin object.
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106
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107 @param name name of the plugin object (string)
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108 @return type of the plugin object (string)
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109 @exception KeyError raised when the given name is not known
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110 """
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111 if name in self.__pluginObjectRegistry:
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112 return self.__pluginObjectRegistry[name][1]
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113 else:
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114 raise KeyError('Pluginobject "{0}" is not registered.'.format(name))
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115
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116 e5App = QCoreApplication.instance

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