Mercurial > fife-parpg

annotate engine/extensions/pychan/__init__.py @ 172:3fe0e68f4269

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* Fixing funny typo. Chewie works on the RGB Zero-Projekt.
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Thu, 22 Jan 2009 15:35:22 +0000
parents 456634bbc430
children 06dddc96ce54
rev   line source
0
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1 # coding: utf-8
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2
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3 """\
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4 Pythonic Guichan Wrapper - PyChan
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5 =================================
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6
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7 Pythonic GUI API.
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8
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9 Features
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10 --------
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11 - Simpler Interface
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12 - Very Basic XML Format support
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13 - Very Basic Layout Engine
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14 - Pseudo-Synchronous Dialogs.
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15 - Automagic background tiling (WIP)
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16 - Basic Styling support.
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17 - Simple Font Handling
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18
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19 TODO
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20 ----
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21 - Make setting parent attribute imply containment relation.
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22 - Finalize Widget.execute
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23
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24 - Documentation ( Allways not enough :-( )
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25 - Handle Image Fonts
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26 - Move Font config files to XML, too ...
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27 - Add support for fixed size 'Spacers'
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28 - Add messageBox(text)
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29
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30 - Implement real Menus
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31 - Implement StackWidget
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32 - Then implement TabWidget
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33
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34 - GridLayout
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35 - Table
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36
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37 BUGS
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38 ----
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39 - Focus problems with Widget.execute.
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40 - Layout Bugs where max_size of a parent widget get's ignored.
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41 - Font.glyph_spacing is rendered incorrectly.
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42 - It just looks ugly.
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43
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44 Problems
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45 --------
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46 - Reference counting problems again -sigh-
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47 ... and thus possible leaks.
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48 - High amount of code reuse -> Complex code
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49 - Needs at least new style classes and other goodies.
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50 - Missing documentation on:
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51 - Styling
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52 - ScrollArea
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53 - Fonts
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54
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55 How to use
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56 ==========
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57
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58 At its core you only need a few functions.
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59 After setting up FIFE you need to initalize
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60 pychan. After that you can load a GUI from an
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61 XML file. Please see the documentation of L{loadXML}
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62 for the details of the XML format
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63 ::
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64 import pychan
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65 pychan.init(fifeEngine)
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66 guiElement = pychan.loadXML("contents/gui/myform.xml")
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67
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68 The resulting guiElement can be shown and hidden with the
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69 obvious L{widgets.Widget.show} and L{widgets.Widget.hide} methods.
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70
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71 To get a specific widget you have to give it a name in the XML
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72 definition and use that to extract the widget from the returned
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73 GUI element.
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74 ::
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75 okButton = guiElement.findChild(name="okButton")
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76 myInput = guiElement.findChild(name="myInput")
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77
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78 The data is extracted and set via direct attribute access.
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79 These are using the python property technique to hide
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80 behind the scenes manipulations. Please keep in mind that
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81 the Layout engine and the exact way the widgets are displayed
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82 is somewhat limited.
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83 ::
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84 myInput.text = "Blahblah"
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85 myList.items = ["1","2"]
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86 guiElement.position = (80,90)
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87
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88 A dialog without an OK button would be futile - so here's how
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89 you hook widget events to function calls. Every widget
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90 has a L{widgets.Widget.capture} method, which will directly call the passed
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91 function when an widget event occurs. As a convenience a
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92 L{widgets.Widget.mapEvents} function will batch the L{widgets.Widget.findChild} and
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93 L{widgets.Widget.capture} calls in an obvious way.
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94 ::
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95 myButton.capture( application.quit )
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96 guiElement.mapEvents({
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97 'okButton' : self.applyAndClose,
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98 'closeButton': guiElement.hide
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99 })
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100
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101 Other important places to look for information:
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102 - L{widgets.Widget} - Attributes explained.
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103 - L{loadXML} - Explain the XML format.
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104 - L{LayoutBase} - Working of the layout engine.
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105
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106 Initialization, data distribution and collection
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107 ================================================
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108
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109 Very often a dialogs text fields, labels and listboxes have to be filled with data
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110 after the creation of the dialog. This can be a tiresome process.
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111 After a dialog has executed, B{other} attributes have to be read out again,
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112 this to can be tiresome. PyChan simplifies both processes. But it treats them as three
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113 processes. One is setting the data that will never be read out again - called B{initial data} -
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114 the text of a checkbox or the list of a listBox are good examples. The second is setting the
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115 data that is mutable by the user and may be read out again - for example the state of a checkbox
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116 or the selected index in a list. The third and final process is collection of the user-mutable data::
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117 guiElement.distributeInitialData({
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118 'myListBox' : choices,
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119 'myLabel' : map.name,
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120 })
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121 guiElement.distributeData({
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122 'myTextField' : map.description
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123 })
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124 # ... process dialog.
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125 map.description, choice = guiElement.collectData('myListBox','myTextField')
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126 print "You selected:",choice,", good choice!"
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127
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128 See L{widgets.Widget.distributeData},L{widgets.Widget.distributeInitialData},
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129 L{widgets.Widget.collectData} and L{widgets.Widget.collectDataAsDict}.
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130
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131 Styling and font handling
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132 =========================
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133
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134 Note: These features are B{work in progress} and likely to change.
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135
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136 A style is a set of rules for matching widgets and a set of attributes
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137 applied to them after creation. The attributes can be any of the given
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138 attributes. Matching happens currently only by the widget class name
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139 itself.
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140
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141 As an example the following style - written as a python data structure -
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142 will set the border size of all labels to 10::
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143 style = {
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144 'ListBox' : { # Matches all listboxes
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145 'border_size : 10 # After creation call lisbox.border_size = 10
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146 }
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147 }
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148
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149 As a convenience you can use the string B{default} to match all widget
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150 classes and thus - for example apply a common font::
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151 style = {
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152 'default' : {
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153 'font' : 'console_small'
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154 }
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155 }
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156
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157 The font is set via a string identifier pulled from a font definition
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158 in a PyChan configuration file. You have to load these by calling
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159 L{loadFonts} in your startup code::
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160 import pychan
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161 pychan.init( fifeEngine )
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162 pychan.loadFonts( "content/fonts/console.fontdef" )
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163
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164 The font definition files are in the following format::
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165 [Font/FIRST_FONT_NAME]
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166
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167 type: truetype
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168 source: path/to/font.ttf
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169 # The font size in point
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170 size: 30
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171
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172 [Font/SECOND_FONT_NAME]
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173
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174 type: truetype
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175 source: content/fonts/samanata.ttf
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176 size: 8
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177
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178 # And so on.
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179
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180 I hope the example is clear enough ... Other options you can set:
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181
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182 - color: A list of comma separated integers from 0 to 255. White (255,255,255) by default.
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183 - antialias: Zero or one - enable or disable antialialising. Enabled by default.
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184 - row_spacing: Extra height per row. Default is 0.
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185 - glyph_spacing: Extra space per glyph. Default is 0. B{Currently buggy in the engine!}
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186
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187
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188 Widget hierachy
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189 ===============
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190
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191 Every widget can be contained in another container widget like L{Window}, L{VBox},
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192 L{HBox}, L{Container} or L{ScrollArea}. Container widgets can contain any number
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193 of widgets. Thus we have a tree like structure of the widgets - which finally makes
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194 up the window or frame that is placed on the screen.
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195
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196 In PyChan widgets are supposed to be manipulated via the root of this hierachy,
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197 so that the actual layout can be changed in the XML files without hassle.
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198 It can be compared to how HTML works.
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199
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200 These bits and pieces connect things up::
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201 - name - A (hopefully) unique name in the widget hierachy
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202 - findChildren - The accessor method to find widgets by name or any other attribute.
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203 - _parent - The parent widget in the widget hierachy
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204 - deepApply - The method used to walk over the widget hierachy. You have to reimplement
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205 this in case you want to provide custom widgets.
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206
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207 Wrapping machinery
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208 ==================
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209
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210 The wrapping mechanism works be redirecting attribute access to the Widget
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211 derived classes to a C{real_widget} member variable which in turn is an instance
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212 of the SWIG wrapped Guichan widget.
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213
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214 To ensure the real widget has already been constructed, when the wrapping machinery
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215 is already in use, this has to be the first attribute to set in the constructors.
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216 This leads to a reversed construction sequence as the super classes constructor
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217 has to be invoked I{after} the subclass specific construction has taken place.
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218
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219 """
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220
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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221 __all__ = [
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222 'loadXML',
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
223 'loadFonts',
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
224 'init',
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
225 'manager'
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
226 ]
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227
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
228 import fife, pythonize
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229
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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230 from widgets import *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
231 from exceptions import *
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232
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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233 from fonts import loadFonts
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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234
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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235 # Text munging befor adding it to TextBoxes
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236
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
237 ### Initialisation ###
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238
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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239 manager = None
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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240 def init(engine,debug=False):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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241 """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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242 This has to be called before any other pychan methods can be used.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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243 It sets up a manager object which is available under pychan.manager.
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244
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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245 @param engine: The FIFE engine object.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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246 """
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
247 from manager import Manager
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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248 global manager
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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249 manager = Manager(engine,debug)
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250
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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251 # XML Loader
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252
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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253 from xml.sax import saxutils, handler
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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254 from traceback import print_exc
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255
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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256 def traced(f):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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257 """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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258 Simple decorator that prints tracebacks for any exceptions occuring in a
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
259 function. Useful to avoid the infamous 'finally pops bad exception'
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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260 that shadows the real cause of the error ...
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261 """
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262 def traced_f(*args,**kwargs):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
263 try:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
264 return f(*args,**kwargs)
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diff changeset
265 except:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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266 print_exc()
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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267 raise
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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268 return traced_f
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269
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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270 class _GuiLoader(object, handler.ContentHandler):
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271 def __init__(self):
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272 super(_GuiLoader,self).__init__()
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273 self.root = None
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274 self.indent = ""
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275 self.stack = []
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276
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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277 def _printTag(self,name,attrs):
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278 if not manager.debug: return
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279 attrstrings = map(lambda t: '%s="%s"' % tuple(map(str,t)),attrs.items())
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280 tag = "<%s " % name + " ".join(attrstrings) + ">"
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281 print self.indent + tag
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282
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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283 def _resolveTag(self,name):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
284 """ Resolve a XML Tag to a PyChan GUI class. """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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285 cls = WIDGETS.get(name,None)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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286 if cls is None and name == "Spacer":
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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287 cls = Spacer
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288 if cls is None:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
289 raise GuiXMLError("Unknown GUI Element: %s" % name)
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diff changeset
290 return cls
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291
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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292 def _setAttr(self,obj,name,value):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
293 if not hasattr(obj.__class__,'ATTRIBUTES'):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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294 raise PyChanException("The registered widget/spacer class %s does not supply an 'ATTRIBUTES'."
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295 % repr(obj))
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
296 try:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
297 for attr in obj.ATTRIBUTES:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
298 if attr.name == name:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
299 attr.set(obj,value)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
300 return
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
301 except GuiXMLError, e:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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302 raise GuiXMLError("Error parsing attr '%s'='%s' for '%s': '%s'" % (name,value,obj,e))
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
303 raise GuiXMLError("Unknown GUI Attribute '%s' on '%s'" % (name,repr(obj)))
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304
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
305 def startElement(self, name, attrs):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
306 self._printTag(name,attrs)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
307 cls = self._resolveTag(name)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
308 if issubclass(cls,Widget):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
309 self.stack.append('gui_element')
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
310 self._createInstance(cls,name,attrs)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
311 elif cls == Spacer:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
312 self.stack.append('spacer')
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
313 self._createSpacer(cls,name,attrs)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
314 else:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
315 self.stack.append('unknown')
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
316 self.indent += " "*4
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
317
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
318 def _createInstance(self,cls,name,attrs):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
319 obj = cls(parent=self.root)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
320 for k,v in attrs.items():
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
321 self._setAttr(obj,k,v)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
322
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
323 if self.root:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
324 self.root.addChild( obj )
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
325 self.root = obj
129
9a1529f9625e * Indentation patch by GreyGhost
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
326
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
327 def _createSpacer(self,cls,name,attrs):
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
328 obj = cls(parent=self.root)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
329 if hasattr(self.root,'add'):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
330 self.root.addSpacer(obj)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
331 else:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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332 raise GuiXMLError("A spacer needs to be added to a container widget!")
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333 self.root = obj
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334
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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335 def endElement(self, name):
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336 self.indent = self.indent[:-4]
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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337 if manager.debug: print self.indent + "</%s>" % name
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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338 if self.stack.pop() in ('gui_element','spacer'):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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339 self.root = self.root._parent or self.root
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340
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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341 def loadXML(filename_or_stream):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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342 """
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343 Loads a PyChan XML file and generates a widget from it.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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344
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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345 @param filename_or_stream: A filename or a file-like object (for example using StringIO).
129
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346
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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347 The XML format is very dynamic, in the sense, that the actual allowed tags and attributes
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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348 depend on the PyChan code.
129
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349
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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350 So when a tag C{Button} is encountered, an instance of class Button will be generated,
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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351 and added to the parent object.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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352 All attributes will then be parsed and then set in the following way:
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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353
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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354 - position,size,min_size,max_size,margins - These are assumed to be comma separated tuples
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355 of integers.
171
456634bbc430 - small fix for pychan documentation (colors can also be quadruples)
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
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356 - foreground_color,base_color,background_color - These are assumed to be triples or quadruples of comma
172
3fe0e68f4269 * Fixing funny typo. Chewie works on the RGB Zero-Projekt.
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357 separated integers. (triples: r,b,g; quadruples: r,b,g,a)
0
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358 - opaque,border_size,padding - These are assumed to be simple integers.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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359
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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360 All other attributes are set verbatim as strings on the generated instance.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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361 In case a Widget does not accept an attribute to be set or the attribute can not be parsed
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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362 correctly, the function will raise a GuiXMLError.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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363
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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364 In short::
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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365 <VBox>
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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366 <Button text="X" min_size="20,20" base_color="255,0,0" border_size="2" />
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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367 </VBox>
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
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368
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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369 This result in the following code executed::
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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370
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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371 vbox = VBox(parent=None)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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372 button = Button(parent=vbox)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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373 button.text = "X"
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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374 button.min_size = (20,20)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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375 button.base_color = (255,0,0)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
376 button.border_size = 2
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
377 vbox.add( button )
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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378 """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
379 from xml.sax import parse
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
380 loader = _GuiLoader()
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
381 parse(filename_or_stream,loader)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
382 return loader.root
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
383
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
384 def setupModalExecution(mainLoop,breakFromMainLoop):
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
385 """
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
386 Setup the synchronous dialog execution feature.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
387
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
388 You can enable synchronous dialog execution by
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
389 passing to functions to this function.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
390
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
391 @param mainLoop: Function - This is regarded as the applications
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
392 main loop, which should be able to be called recursively.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
393 It should not take no arguments and return the argument
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
394 passed to the second function (breakFromMainLoop).
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
395
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
396 @param breakFromMainLoop: Function -This function should cause the
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
397 first function to finish and return the passed argument.
129
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 0
diff changeset
398
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
399 With these to functions dialogs can be executed synchronously.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
400 See L{widgets.Widget.execute}.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
401 """
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
402 if not manager:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
403 raise InitializationError("PyChan is not initialized yet.")
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
404 manager.setupModalExecution(mainLoop,breakFromMainLoop)