Mon, 10 Sep 2012 18:42:28 +0200
Implemented functions to load UML graphics from disc.
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1 | # -*- coding: utf-8 -*- |
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2 | |
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Updated copyright for 2012.
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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 package item. |
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8 | """ |
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9 | |
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10 | from PyQt4.QtGui import QFont, QGraphicsSimpleTextItem, QStyle |
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11 | |
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First commit after changing to Python 3.1.
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12 | from .UMLItem import UMLItem |
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13 | |
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14 | import Utilities |
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15 | |
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16 | |
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17 | class PackageModel(object): |
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18 | """ |
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19 | Class implementing the package model. |
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20 | """ |
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21 | def __init__(self, name, moduleslist=[]): |
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22 | """ |
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23 | Constructor |
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24 | |
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25 | @param name package name (string) |
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26 | @param moduleslist list of module names (list of strings) |
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27 | """ |
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28 | self.name = name |
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29 | self.moduleslist = moduleslist |
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30 | |
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31 | def addModule(self, modulename): |
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32 | """ |
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33 | Method to add a module to the package model. |
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34 | |
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35 | @param modulename module name to be added (string) |
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36 | """ |
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37 | self.moduleslist.append(modulename) |
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38 | |
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39 | def getModules(self): |
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40 | """ |
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41 | Method to retrieve the modules of the package. |
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42 | |
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43 | @return list of module names (list of strings) |
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44 | """ |
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45 | return self.moduleslist[:] |
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46 | |
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47 | def getName(self): |
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48 | """ |
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49 | Method to retrieve the package name. |
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50 | |
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51 | @return package name (string) |
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52 | """ |
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53 | return self.name |
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54 | |
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55 | |
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56 | class PackageItem(UMLItem): |
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57 | """ |
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58 | Class implementing a package item. |
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59 | """ |
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60 | ItemType = "package" |
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61 | |
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62 | def __init__(self, model=None, x=0, y=0, rounded=False, |
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63 | noModules=False, parent=None, scene=None): |
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64 | """ |
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65 | Constructor |
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66 | |
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67 | @param model module model containing the module data (ModuleModel) |
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68 | @param x x-coordinate (integer) |
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69 | @param y y-coordinate (integer) |
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70 | @param rounded flag indicating a rounded corner (boolean) |
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71 | @keyparam noModules flag indicating, that no module names should be |
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72 | shown (boolean) |
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73 | @keyparam parent reference to the parent object (QGraphicsItem) |
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74 | @keyparam scene reference to the scene object (QGraphicsScene) |
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75 | """ |
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76 | UMLItem.__init__(self, x, y, rounded, parent) |
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77 | self.model = model |
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78 | self.noModules = noModules |
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79 | |
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80 | scene.addItem(self) |
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81 | |
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82 | if self.model: |
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83 | self.__createTexts() |
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84 | self.__calculateSize() |
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85 | |
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86 | def __createTexts(self): |
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87 | """ |
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88 | Private method to create the text items of the class item. |
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89 | """ |
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90 | if self.model is None: |
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91 | return |
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92 | |
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93 | boldFont = QFont(self.font) |
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94 | boldFont.setBold(True) |
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95 | |
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96 | modules = self.model.getModules() |
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97 | |
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98 | x = self.margin + self.rect().x() |
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99 | y = self.margin + self.rect().y() |
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100 | self.header = QGraphicsSimpleTextItem(self) |
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101 | self.header.setFont(boldFont) |
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102 | self.header.setText(self.model.getName()) |
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103 | self.header.setPos(x, y) |
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104 | y += self.header.boundingRect().height() + self.margin |
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105 | |
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106 | if not self.noModules: |
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107 | if modules: |
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108 | txt = "\n".join(modules) |
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109 | else: |
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110 | txt = " " |
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111 | self.modules = QGraphicsSimpleTextItem(self) |
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112 | self.modules.setFont(self.font) |
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113 | self.modules.setText(txt) |
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114 | self.modules.setPos(x, y) |
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115 | else: |
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116 | self.modules = None |
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117 | |
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118 | def __calculateSize(self): |
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119 | """ |
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120 | Method to calculate the size of the package widget. |
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121 | """ |
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122 | if self.model is None: |
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123 | return |
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124 | |
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125 | width = self.header.boundingRect().width() |
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126 | height = self.header.boundingRect().height() |
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127 | if self.modules: |
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128 | width = max(width, self.modules.boundingRect().width()) |
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129 | height = height + self.modules.boundingRect().height() |
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130 | latchW = width / 3.0 |
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131 | latchH = min(15.0, latchW) |
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132 | self.setSize(width + 2 * self.margin, height + latchH + 2 * self.margin) |
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133 | |
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134 | x = self.margin + self.rect().x() |
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135 | y = self.margin + self.rect().y() + latchH |
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136 | self.header.setPos(x, y) |
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137 | y += self.header.boundingRect().height() + self.margin |
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138 | if self.modules: |
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139 | self.modules.setPos(x, y) |
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140 | |
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141 | def setModel(self, model): |
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142 | """ |
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143 | Method to set the package model. |
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144 | |
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145 | @param model package model containing the package data (PackageModel) |
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146 | """ |
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147 | self.scene().removeItem(self.header) |
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148 | self.header = None |
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149 | if self.modules: |
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150 | self.scene().removeItem(self.modules) |
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151 | self.modules = None |
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152 | self.model = model |
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153 | self.__createTexts() |
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154 | self.__calculateSize() |
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155 | |
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156 | def paint(self, painter, option, widget=None): |
0
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157 | """ |
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158 | Public method to paint the item in local coordinates. |
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159 | |
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160 | @param painter reference to the painter object (QPainter) |
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161 | @param option style options (QStyleOptionGraphicsItem) |
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162 | @param widget optional reference to the widget painted on (QWidget) |
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163 | """ |
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164 | pen = self.pen() |
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165 | if (option.state & QStyle.State_Selected) == QStyle.State(QStyle.State_Selected): |
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166 | pen.setWidth(2) |
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167 | else: |
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168 | pen.setWidth(1) |
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169 | |
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170 | offsetX = self.rect().x() |
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171 | offsetY = self.rect().y() |
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172 | w = self.rect().width() |
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173 | latchW = w / 3.0 |
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174 | latchH = min(15.0, latchW) |
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175 | h = self.rect().height() - latchH + 1 |
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176 | |
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177 | painter.setPen(pen) |
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178 | painter.setBrush(self.brush()) |
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179 | painter.setFont(self.font) |
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180 | |
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181 | painter.drawRect(offsetX, offsetY, latchW, latchH) |
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182 | painter.drawRect(offsetX, offsetY + latchH, w, h) |
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183 | y = self.margin + self.header.boundingRect().height() + latchH |
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184 | painter.drawLine(offsetX, offsetY + y, offsetX + w - 1, offsetY + y) |
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185 | |
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186 | self.adjustAssociations() |
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187 | |
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188 | def buildItemDataString(self): |
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189 | """ |
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190 | Public method to build a string to persist the specific item data. |
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191 | |
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192 | This string must start with ", " and should be built like |
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193 | "attribute=value" with pairs separated by ", ". value must not contain ", " |
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194 | or newlines. |
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195 | |
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196 | @return persistence data (string) |
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197 | """ |
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198 | entries = [ |
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199 | "no_modules={0}".format(self.noModules), |
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200 | "name={0}".format(self.model.getName()), |
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201 | ] |
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202 | modules = self.model.getModules() |
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203 | if modules: |
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204 | entries.append("modules={0}".format("||".join(modules))) |
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205 | |
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206 | return ", " + ", ".join(entries) |
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207 | |
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208 | def parseItemDataString(self, version, data): |
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209 | """ |
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210 | Public method to parse the given persistence data. |
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211 | |
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212 | @param version version of the data (string) |
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213 | @param data persisted data to be parsed (string) |
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214 | @return flag indicating success (boolean) |
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215 | """ |
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216 | parts = data.split(", ") |
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217 | if len(parts) < 2: |
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218 | return False |
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219 | |
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220 | name = "" |
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221 | modules = [] |
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222 | |
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223 | for part in parts: |
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224 | key, value = part.split("=", 1) |
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225 | if key == "no_modules": |
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226 | self.external = Utilities.toBool(value.strip()) |
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227 | elif key == "name": |
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228 | name = value.strip() |
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229 | elif key == "modules": |
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230 | modules = value.strip().split("||") |
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231 | else: |
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parents:
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232 | return False |
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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233 | |
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
2033
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234 | self.model = PackageModel(name, modules) |
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parents:
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235 | self.__createTexts() |
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parents:
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236 | self.__calculateSize() |
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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237 | |
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Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
2033
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238 | return True |