Graphics/ModuleItem.py

Thu, 10 Jan 2019 14:18:48 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Thu, 10 Jan 2019 14:18:48 +0100
changeset 6645
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parent 6048
82ad8ec9548c
permissions
-rw-r--r--

Updated copyright for 2019.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2007 - 2019 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 module item.
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8 """
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9
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10 from __future__ import unicode_literals
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11
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12 from PyQt5.QtGui import QFont
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13 from PyQt5.QtWidgets import QGraphicsSimpleTextItem, QStyle
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15 from .UMLItem import UMLModel, UMLItem
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16
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17
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18 class ModuleModel(UMLModel):
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19 """
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20 Class implementing the module model.
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21 """
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22 def __init__(self, name, classlist=None):
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23 """
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24 Constructor
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25
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26 @param name the module name (string)
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27 @param classlist list of class names (list of strings)
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28 """
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29 super(ModuleModel, self).__init__(name)
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30
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31 self.classlist = [] if classlist is None else classlist[:]
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32
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33 def addClass(self, classname):
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34 """
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35 Public method to add a class to the module model.
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36
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37 @param classname class name to be added (string)
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38 """
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39 self.classlist.append(classname)
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40
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41 def getClasses(self):
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42 """
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43 Public method to retrieve the classes of the module.
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44
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45 @return list of class names (list of strings)
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46 """
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47 return self.classlist[:]
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48
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49
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50 class ModuleItem(UMLItem):
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51 """
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52 Class implementing a module item.
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53 """
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54 ItemType = "module"
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55
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56 def __init__(self, model=None, x=0, y=0, rounded=False,
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57 parent=None, scene=None):
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58 """
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59 Constructor
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60
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61 @param model module model containing the module data (ModuleModel)
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62 @param x x-coordinate (integer)
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63 @param y y-coordinate (integer)
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64 @keyparam rounded flag indicating a rounded corner (boolean)
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65 @keyparam parent reference to the parent object (QGraphicsItem)
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66 @keyparam scene reference to the scene object (QGraphicsScene)
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67 """
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68 UMLItem.__init__(self, model, x, y, rounded, parent)
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69
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70 scene.addItem(self)
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71
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72 if self.model:
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73 self.__createTexts()
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74 self.__calculateSize()
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75
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76 def __createTexts(self):
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77 """
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78 Private method to create the text items of the module item.
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79 """
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80 if self.model is None:
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81 return
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82
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83 boldFont = QFont(self.font)
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84 boldFont.setBold(True)
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85
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86 classes = self.model.getClasses()
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87
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88 x = self.margin + self.rect().x()
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89 y = self.margin + self.rect().y()
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90 self.header = QGraphicsSimpleTextItem(self)
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91 self.header.setFont(boldFont)
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92 self.header.setText(self.model.getName())
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93 self.header.setPos(x, y)
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94 y += self.header.boundingRect().height() + self.margin
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95 if classes:
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96 txt = "\n".join(classes)
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97 else:
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98 txt = " "
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99 self.classes = QGraphicsSimpleTextItem(self)
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100 self.classes.setFont(self.font)
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101 self.classes.setText(txt)
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102 self.classes.setPos(x, y)
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103
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104 def __calculateSize(self):
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105 """
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106 Private method to calculate the size of the module item.
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107 """
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108 if self.model is None:
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109 return
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110
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111 width = self.header.boundingRect().width()
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112 height = self.header.boundingRect().height()
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113 if self.classes:
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114 width = max(width, self.classes.boundingRect().width())
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115 height = height + self.classes.boundingRect().height()
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116 self.setSize(width + 2 * self.margin, height + 2 * self.margin)
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117
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118 def setModel(self, model):
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119 """
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120 Public method to set the module model.
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121
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122 @param model module model containing the module data (ModuleModel)
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123 """
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124 self.scene().removeItem(self.header)
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125 self.header = None
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126 if self.classes:
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127 self.scene().removeItem(self.classes)
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128 self.meths = None
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129 self.model = model
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130 self.__createTexts()
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131 self.__calculateSize()
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132
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133 def paint(self, painter, option, widget=None):
0
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134 """
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135 Public method to paint the item in local coordinates.
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136
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137 @param painter reference to the painter object (QPainter)
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138 @param option style options (QStyleOptionGraphicsItem)
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139 @param widget optional reference to the widget painted on (QWidget)
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140 """
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141 pen = self.pen()
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142 if (option.state & QStyle.State_Selected) == \
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parents: 2302
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143 QStyle.State(QStyle.State_Selected):
0
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144 pen.setWidth(2)
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145 else:
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146 pen.setWidth(1)
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147
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148 painter.setPen(pen)
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149 painter.setBrush(self.brush())
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150 painter.setFont(self.font)
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151
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152 offsetX = self.rect().x()
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153 offsetY = self.rect().y()
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154 w = self.rect().width()
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155 h = self.rect().height()
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156
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157 painter.drawRect(offsetX, offsetY, w, h)
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158 y = self.margin + self.header.boundingRect().height()
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parents:
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159 painter.drawLine(offsetX, offsetY + y, offsetX + w - 1, offsetY + y)
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160
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161 self.adjustAssociations()
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162
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163 def buildItemDataString(self):
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parents: 1509
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164 """
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parents: 1509
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165 Public method to build a string to persist the specific item data.
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166
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167 This string must start with ", " and should be built like
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168 "attribute=value" with pairs separated by ", ". value must not
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169 contain ", " or newlines.
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170
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171 @return persistence data (string)
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parents: 1509
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172 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
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173 entries = [
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174 "name={0}".format(self.model.getName()),
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parents: 1509
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175 ]
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parents: 1509
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176 classes = self.model.getClasses()
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177 if classes:
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178 entries.append("classes={0}".format("||".join(classes)))
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179
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180 return ", " + ", ".join(entries)
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181
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182 def parseItemDataString(self, version, data):
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183 """
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parents: 1509
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184 Public method to parse the given persistence data.
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185
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186 @param version version of the data (string)
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187 @param data persisted data to be parsed (string)
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188 @return flag indicating success (boolean)
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189 """
2034
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190 parts = data.split(", ")
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191 if len(parts) < 1:
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192 return False
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193
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194 name = ""
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195 classes = []
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196
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197 for part in parts:
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198 key, value = part.split("=", 1)
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199 if key == "name":
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200 name = value.strip()
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201 elif key == "classes":
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202 classes = value.strip().split("||")
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203 else:
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204 return False
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205
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206 self.model = ModuleModel(name, classes)
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207 self.__createTexts()
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208 self.__calculateSize()
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209
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210 return True

eric ide

mercurial