Graphics/UMLClassDiagramBuilder.py

Wed, 12 Sep 2012 19:41:50 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 12 Sep 2012 19:41:50 +0200
changeset 2039
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parent 2034
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child 2094
88620e11c67c
permissions
-rw-r--r--

Added the capability to rebuild a diagram without losing the current item positions.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2007 - 2012 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 dialog showing a UML like class diagram.
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8 """
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9
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10 import itertools
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11
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12 from PyQt4.QtGui import QGraphicsTextItem
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14 import Utilities
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15 import Utilities.ModuleParser
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16 import Preferences
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18 from .UMLDiagramBuilder import UMLDiagramBuilder
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19 from .ClassItem import ClassItem, ClassModel
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20 from .AssociationItem import AssociationItem, Generalisation
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21 from . import GraphicsUtilities
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22
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23
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24 class UMLClassDiagramBuilder(UMLDiagramBuilder):
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25 """
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26 Class implementing a builder for UML like class diagrams.
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27 """
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28 def __init__(self, dialog, view, project, file, noAttrs=False):
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29 """
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30 Constructor
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31
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32 @param dialog reference to the UML dialog (UMLDialog)
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33 @param view reference to the view object (UMLGraphicsView)
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34 @param project reference to the project object (Project)
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35 @param file file name of a python module to be shown (string)
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36 @keyparam noAttrs flag indicating, that no attributes should be shown (boolean)
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37 """
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38 super().__init__(dialog, view, project)
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39 self.setObjectName("UMLClassDiagramBuilder")
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40
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41 self.file = file
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42 self.noAttrs = noAttrs
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43
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44 def initialize(self):
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45 """
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46 Public method to initialize the object.
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47 """
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48 pname = self.project.getProjectName()
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49 if pname and self.project.isProjectSource(self.file):
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50 name = self.trUtf8("Class Diagram {0}: {1}").format(
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51 pname, self.project.getRelativePath(self.file))
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52 else:
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53 name = self.trUtf8("Class Diagram: {0}").format(self.file)
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54 self.umlView.setDiagramName(name)
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55
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56 def __getCurrentShape(self, name):
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57 """
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58 Private method to get the named shape.
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59
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60 @param name name of the shape (string)
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61 @return shape (QGraphicsItem)
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62 """
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63 return self.allClasses.get(name)
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64
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65 def buildDiagram(self):
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66 """
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67 Public method to build the class shapes of the class diagram.
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68
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69 The algorithm is borrowed from Boa Constructor.
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70 """
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71 self.allClasses = {}
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72 self.allModules = {}
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73
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74 try:
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75 extensions = Preferences.getPython("PythonExtensions") + \
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76 Preferences.getPython("Python3Extensions") + ['.rb']
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77 module = Utilities.ModuleParser.readModule(self.file, extensions=extensions,
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78 caching=False)
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79 except ImportError:
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80 ct = QGraphicsTextItem(None, self.scene)
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81 ct.setHtml(
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82 self.trUtf8("The module <b>'{0}'</b> could not be found.")
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83 .format(self.file))
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84 return
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85
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86 if self.file not in self.allModules:
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87 self.allModules[self.file] = []
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88
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89 routes = []
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90 nodes = []
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91 todo = [module.createHierarchy()]
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92 classesFound = False
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93 while todo:
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94 hierarchy = todo[0]
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95 for className in hierarchy:
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96 classesFound = True
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97 cw = self.__getCurrentShape(className)
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98 if not cw and className.find('.') >= 0:
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99 cw = self.__getCurrentShape(className.split('.')[-1])
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100 if cw:
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101 self.allClasses[className] = cw
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102 if className not in self.allModules[self.file]:
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103 self.allModules[self.file].append(className)
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104 if cw and cw.noAttrs != self.noAttrs:
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105 cw = None
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106 if cw and not (cw.external and \
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107 (className in module.classes or
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108 className in module.modules)
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109 ):
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110 if cw.scene() != self.scene:
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111 self.scene.addItem(cw)
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112 cw.setPos(10, 10)
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113 if className not in nodes:
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114 nodes.append(className)
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115 else:
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116 if className in module.classes:
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117 # this is a local class (defined in this module)
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118 self.__addLocalClass(
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119 className, module.classes[className], 0, 0)
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120 elif className in module.modules:
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121 # this is a local module (defined in this module)
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122 self.__addLocalClass(
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123 className, module.modules[className], 0, 0, True)
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124 else:
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125 self.__addExternalClass(className, 0, 0)
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126 nodes.append(className)
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127
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128 if hierarchy.get(className):
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129 todo.append(hierarchy.get(className))
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1d8dd9706f46 First commit after changing to Python 3.1.
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parents: 0
diff changeset
130 children = list(hierarchy.get(className).keys())
0
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Detlev Offenbach <detlev@die-offenbachs.de>
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131 for child in children:
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Detlev Offenbach <detlev@die-offenbachs.de>
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132 if (className, child) not in routes:
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Detlev Offenbach <detlev@die-offenbachs.de>
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133 routes.append((className, child))
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Detlev Offenbach <detlev@die-offenbachs.de>
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134
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Detlev Offenbach <detlev@die-offenbachs.de>
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135 del todo[0]
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Detlev Offenbach <detlev@die-offenbachs.de>
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136
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Detlev Offenbach <detlev@die-offenbachs.de>
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137 if classesFound:
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Detlev Offenbach <detlev@die-offenbachs.de>
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138 self.__arrangeClasses(nodes, routes[:])
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Detlev Offenbach <detlev@die-offenbachs.de>
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139 self.__createAssociations(routes)
2027
144463496a54 A few fixes for issues with the graphics dialogs.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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140 self.umlView.autoAdjustSceneSize(limit=True)
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141 else:
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Detlev Offenbach <detlev@die-offenbachs.de>
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142 ct = QGraphicsTextItem(None, self.scene)
564
b3d966393ba9 Did some code cleanup.
Detlev Offenbach <detlev@die-offenbachs.de>
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143 ct.setHtml(
0
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Detlev Offenbach <detlev@die-offenbachs.de>
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144 self.trUtf8("The module <b>'{0}'</b> does not contain any classes.")\
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Detlev Offenbach <detlev@die-offenbachs.de>
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145 .format(self.file))
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146
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147 def __arrangeClasses(self, nodes, routes, whiteSpaceFactor=1.2):
0
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Detlev Offenbach <detlev@die-offenbachs.de>
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148 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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149 Private method to arrange the shapes on the canvas.
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Detlev Offenbach <detlev@die-offenbachs.de>
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150
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Detlev Offenbach <detlev@die-offenbachs.de>
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151 The algorithm is borrowed from Boa Constructor.
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Detlev Offenbach <detlev@die-offenbachs.de>
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152 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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153 generations = GraphicsUtilities.sort(nodes, routes)
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154
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Detlev Offenbach <detlev@die-offenbachs.de>
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155 # calculate width and height of all elements
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Detlev Offenbach <detlev@die-offenbachs.de>
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156 sizes = []
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Detlev Offenbach <detlev@die-offenbachs.de>
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157 for generation in generations:
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Detlev Offenbach <detlev@die-offenbachs.de>
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158 sizes.append([])
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Detlev Offenbach <detlev@die-offenbachs.de>
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159 for child in generation:
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Detlev Offenbach <detlev@die-offenbachs.de>
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160 sizes[-1].append(self.__getCurrentShape(child).sceneBoundingRect())
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161
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162 # calculate total width and total height
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163 width = 0
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164 height = 0
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Detlev Offenbach <detlev@die-offenbachs.de>
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165 widths = []
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Detlev Offenbach <detlev@die-offenbachs.de>
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166 heights = []
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Detlev Offenbach <detlev@die-offenbachs.de>
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167 for generation in sizes:
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Detlev Offenbach <detlev@die-offenbachs.de>
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168 currentWidth = 0
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Detlev Offenbach <detlev@die-offenbachs.de>
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169 currentHeight = 0
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170
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Detlev Offenbach <detlev@die-offenbachs.de>
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171 for rect in generation:
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Detlev Offenbach <detlev@die-offenbachs.de>
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172 if rect.bottom() > currentHeight:
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Detlev Offenbach <detlev@die-offenbachs.de>
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173 currentHeight = rect.bottom()
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Detlev Offenbach <detlev@die-offenbachs.de>
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174 currentWidth = currentWidth + rect.right()
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Detlev Offenbach <detlev@die-offenbachs.de>
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175
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Detlev Offenbach <detlev@die-offenbachs.de>
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176 # update totals
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Detlev Offenbach <detlev@die-offenbachs.de>
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177 if currentWidth > width:
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Detlev Offenbach <detlev@die-offenbachs.de>
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178 width = currentWidth
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Detlev Offenbach <detlev@die-offenbachs.de>
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179 height = height + currentHeight
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180
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Detlev Offenbach <detlev@die-offenbachs.de>
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181 # store generation info
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Detlev Offenbach <detlev@die-offenbachs.de>
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182 widths.append(currentWidth)
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Detlev Offenbach <detlev@die-offenbachs.de>
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183 heights.append(currentHeight)
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184
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Detlev Offenbach <detlev@die-offenbachs.de>
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185 # add in some whitespace
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Detlev Offenbach <detlev@die-offenbachs.de>
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186 width = width * whiteSpaceFactor
2027
144463496a54 A few fixes for issues with the graphics dialogs.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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187 ## rawHeight = height
0
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188 height = height * whiteSpaceFactor - 20
2027
144463496a54 A few fixes for issues with the graphics dialogs.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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189 ## verticalWhiteSpace = max(
144463496a54 A few fixes for issues with the graphics dialogs.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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190 ## (height - rawHeight) / (len(generations) - 1.0 or 2.0),
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Detlev Offenbach <detlev@die-offenbachs.de>
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191 ## 40.0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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192 ## )
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2026
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193 verticalWhiteSpace = 40.0
0
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194
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195 sceneRect = self.umlView.sceneRect()
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196 width += 50.0
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197 height += 50.0
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198 swidth = width < sceneRect.width() and sceneRect.width() or width
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199 sheight = height < sceneRect.height() and sceneRect.height() or height
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200 self.umlView.setSceneSize(swidth, sheight)
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201
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202 # distribute each generation across the width and the
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Detlev Offenbach <detlev@die-offenbachs.de>
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203 # generations across height
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Detlev Offenbach <detlev@die-offenbachs.de>
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204 y = 10.0
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Detlev Offenbach <detlev@die-offenbachs.de>
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205 for currentWidth, currentHeight, generation in \
35
42f5cfc851da Ported the UML like diagrams.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 13
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206 itertools.zip_longest(widths, heights, generations):
0
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207 x = 10.0
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208 # whiteSpace is the space between any two elements
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209 whiteSpace = (width - currentWidth - 20) / (len(generation) - 1.0 or 2.0)
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Detlev Offenbach <detlev@die-offenbachs.de>
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210 for className in generation:
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Detlev Offenbach <detlev@die-offenbachs.de>
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211 cw = self.__getCurrentShape(className)
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Detlev Offenbach <detlev@die-offenbachs.de>
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212 cw.setPos(x, y)
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Detlev Offenbach <detlev@die-offenbachs.de>
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213 rect = cw.sceneBoundingRect()
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Detlev Offenbach <detlev@die-offenbachs.de>
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214 x = x + rect.width() + whiteSpace
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Detlev Offenbach <detlev@die-offenbachs.de>
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215 y = y + currentHeight + verticalWhiteSpace
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216
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217 def __addLocalClass(self, className, _class, x, y, isRbModule=False):
0
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Detlev Offenbach <detlev@die-offenbachs.de>
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218 """
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219 Private method to add a class defined in the module.
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220
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221 @param className name of the class to be as a dictionary key (string)
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222 @param _class class to be shown (ModuleParser.Class)
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223 @param x x-coordinate (float)
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224 @param y y-coordinate (float)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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225 @param isRbModule flag indicating a Ruby module (boolean)
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Detlev Offenbach <detlev@die-offenbachs.de>
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226 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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227 meths = sorted(_class.methods.keys())
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228 attrs = sorted(_class.attributes.keys())
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Detlev Offenbach <detlev@die-offenbachs.de>
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229 name = _class.name
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230 if isRbModule:
413
3d82e6eb3516 Did some more string format conversions.
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231 name = "{0} (Module)".format(name)
0
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232 cl = ClassModel(name, meths[:], attrs[:])
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Detlev Offenbach <detlev@die-offenbachs.de>
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233 cw = ClassItem(cl, False, x, y, noAttrs=self.noAttrs, scene=self.scene)
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2027
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234 cw.setId(self.umlView.getItemId())
0
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235 self.allClasses[className] = cw
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236 if _class.name not in self.allModules[self.file]:
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237 self.allModules[self.file].append(_class.name)
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238
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239 def __addExternalClass(self, _class, x, y):
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240 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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241 Private method to add a class defined outside the module.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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242
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243 If the canvas is too small to take the shape, it
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244 is enlarged.
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245
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parents:
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246 @param _class class to be shown (string)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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247 @param x x-coordinate (float)
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Detlev Offenbach <detlev@die-offenbachs.de>
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248 @param y y-coordinate (float)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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249 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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250 cl = ClassModel(_class)
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parents: 791
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251 cw = ClassItem(cl, True, x, y, noAttrs=self.noAttrs, scene=self.scene)
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2027
diff changeset
252 cw.setId(self.umlView.getItemId())
0
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parents:
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253 self.allClasses[_class] = cw
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parents:
diff changeset
254 if _class not in self.allModules[self.file]:
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diff changeset
255 self.allModules[self.file].append(_class)
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256
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257 def __createAssociations(self, routes):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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258 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
259 Private method to generate the associations between the class shapes.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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260
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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261 @param routes list of relationsships
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262 """
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263 for route in routes:
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264 if len(route) > 1:
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265 assoc = AssociationItem(
0
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266 self.__getCurrentShape(route[1]),
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267 self.__getCurrentShape(route[0]),
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268 Generalisation,
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269 topToBottom=True)
0
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270 self.scene.addItem(assoc)
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271
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272 def getPersistenceData(self):
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273 """
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274 Public method to get a string for data to be persisted.
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275
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276 @return persisted data string (string)
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277 """
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278 return "file={0}, no_attributes={1}".format(self.file, self.noAttrs)
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279
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280 def parsePersistenceData(self, version, data):
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281 """
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282 Public method to parse persisted data.
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283
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284 @param version version of the data (string)
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285 @param data persisted data to be parsed (string)
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286 @return flag indicating success (boolean)
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287 """
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288 parts = data.split(", ")
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289 if len(parts) != 2 or \
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290 not parts[0].startswith("file=") or \
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291 not parts[1].startswith("no_attributes="):
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292 return False
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293
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294 self.file = parts[0].split("=", 1)[1].strip()
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295 self.noAttrs = Utilities.toBool(parts[1].split("=", 1)[1].strip())
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296
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297 self.initialize()
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298
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299 return True

eric ide

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