Graphics/PackageItem.py

Sun, 09 Sep 2012 14:46:59 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 09 Sep 2012 14:46:59 +0200
changeset 2030
db11a2fe9bbc
parent 1509
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child 2032
704593d042fe
permissions
-rw-r--r--

Implemented functions to save the UML graphics to disc.

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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 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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1d8dd9706f46 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
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15 class PackageModel(object):
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16 """
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17 Class implementing the package model.
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18 """
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19 def __init__(self, name, moduleslist=[]):
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20 """
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21 Constructor
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22
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23 @param name package name (string)
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24 @param moduleslist list of module names (list of strings)
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25 """
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26 self.name = name
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27 self.moduleslist = moduleslist
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28
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29 def addModule(self, modulename):
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30 """
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31 Method to add a module to the package model.
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32
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33 @param modulename module name to be added (string)
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34 """
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35 self.moduleslist.append(modulename)
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36
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37 def getModules(self):
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38 """
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39 Method to retrieve the modules of the package.
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40
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41 @return list of module names (list of strings)
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42 """
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43 return self.moduleslist[:]
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44
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45 def getName(self):
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46 """
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47 Method to retrieve the package name.
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48
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49 @return package name (string)
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50 """
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51 return self.name
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52
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53
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54 class PackageItem(UMLItem):
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55 """
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56 Class implementing a package item.
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57 """
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58 def __init__(self, model=None, x=0, y=0, rounded=False,
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59 noModules=False, parent=None, scene=None):
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60 """
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61 Constructor
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62
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63 @param model module model containing the module data (ModuleModel)
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64 @param x x-coordinate (integer)
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65 @param y y-coordinate (integer)
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66 @param rounded flag indicating a rounded corner (boolean)
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67 @keyparam noModules flag indicating, that no module names should be
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68 shown (boolean)
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69 @keyparam parent reference to the parent object (QGraphicsItem)
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70 @keyparam scene reference to the scene object (QGraphicsScene)
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71 """
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72 UMLItem.__init__(self, x, y, rounded, parent)
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73 self.model = model
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74 self.noModules = noModules
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75
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76 scene.addItem(self)
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77
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78 if self.model:
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79 self.__createTexts()
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80 self.__calculateSize()
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81
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82 def __createTexts(self):
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83 """
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84 Private method to create the text items of the class item.
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85 """
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86 if self.model is None:
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87 return
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88
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89 boldFont = QFont(self.font)
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90 boldFont.setBold(True)
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91
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92 modules = self.model.getModules()
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93
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94 x = self.margin + self.rect().x()
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95 y = self.margin + self.rect().y()
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96 self.header = QGraphicsSimpleTextItem(self)
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97 self.header.setFont(boldFont)
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98 self.header.setText(self.model.getName())
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99 self.header.setPos(x, y)
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100 y += self.header.boundingRect().height() + self.margin
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101
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102 if not self.noModules:
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103 if modules:
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104 txt = "\n".join(modules)
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105 else:
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106 txt = " "
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107 self.modules = QGraphicsSimpleTextItem(self)
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108 self.modules.setFont(self.font)
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109 self.modules.setText(txt)
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110 self.modules.setPos(x, y)
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111 else:
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112 self.modules = None
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113
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114 def __calculateSize(self):
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115 """
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116 Method to calculate the size of the package widget.
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117 """
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118 if self.model is None:
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119 return
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120
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121 width = self.header.boundingRect().width()
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122 height = self.header.boundingRect().height()
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123 if self.modules:
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124 width = max(width, self.modules.boundingRect().width())
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125 height = height + self.modules.boundingRect().height()
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126 latchW = width / 3.0
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127 latchH = min(15.0, latchW)
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128 self.setSize(width + 2 * self.margin, height + latchH + 2 * self.margin)
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129
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130 x = self.margin + self.rect().x()
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131 y = self.margin + self.rect().y() + latchH
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132 self.header.setPos(x, y)
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133 y += self.header.boundingRect().height() + self.margin
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parents:
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134 if self.modules:
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parents:
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135 self.modules.setPos(x, y)
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parents:
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136
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parents:
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137 def setModel(self, model):
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parents:
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138 """
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parents:
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139 Method to set the package model.
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parents:
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140
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141 @param model package model containing the package data (PackageModel)
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parents:
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142 """
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parents:
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143 self.scene().removeItem(self.header)
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144 self.header = None
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parents:
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145 if self.modules:
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parents:
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146 self.scene().removeItem(self.modules)
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147 self.modules = None
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148 self.model = model
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149 self.__createTexts()
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150 self.__calculateSize()
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151
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parents: 791
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152 def paint(self, painter, option, widget=None):
0
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153 """
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154 Public method to paint the item in local coordinates.
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155
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156 @param painter reference to the painter object (QPainter)
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parents:
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157 @param option style options (QStyleOptionGraphicsItem)
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158 @param widget optional reference to the widget painted on (QWidget)
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159 """
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160 pen = self.pen()
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161 if (option.state & QStyle.State_Selected) == QStyle.State(QStyle.State_Selected):
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162 pen.setWidth(2)
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163 else:
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164 pen.setWidth(1)
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165
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166 offsetX = self.rect().x()
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167 offsetY = self.rect().y()
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168 w = self.rect().width()
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169 latchW = w / 3.0
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170 latchH = min(15.0, latchW)
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171 h = self.rect().height() - latchH + 1
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172
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173 painter.setPen(pen)
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174 painter.setBrush(self.brush())
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175 painter.setFont(self.font)
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176
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177 painter.drawRect(offsetX, offsetY, latchW, latchH)
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178 painter.drawRect(offsetX, offsetY + latchH, w, h)
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179 y = self.margin + self.header.boundingRect().height() + latchH
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180 painter.drawLine(offsetX, offsetY + y, offsetX + w - 1, offsetY + y)
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181
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182 self.adjustAssociations()
2030
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183
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184 def buildItemDataString(self):
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parents: 1509
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185 """
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parents: 1509
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186 Public method to build a string to persist the specific item data.
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187
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188 This string must start with ", " and should be built like
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parents: 1509
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189 "attribute=value" with pairs separated by ", ". value must not contain ", "
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190 or newlines.
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191
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192 @return persistence data (string)
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parents: 1509
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193 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
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194 entries = [
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parents: 1509
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195 "item_type=package",
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parents: 1509
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196 "no_modules={0}".format(self.noModules),
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parents: 1509
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197 "name={0}".format(self.model.getName()),
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parents: 1509
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198 ]
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parents: 1509
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199 modules = self.model.getModules()
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parents: 1509
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200 if modules:
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parents: 1509
diff changeset
201 entries.append("modules={0}".format("||".join(modules)))
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202
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parents: 1509
diff changeset
203 return ", " + ", ".join(entries)
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diff changeset
204
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parents: 1509
diff changeset
205 def parseItemDataString(self, data):
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parents: 1509
diff changeset
206 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
207 Public method to parse the given persistence data.
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parents: 1509
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208
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parents: 1509
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209 @param data persisted data to be parsed (string)
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210 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
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211 # TODO: implement this

eric ide

mercurial