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annotate engine/extensions/pychan/attrs.py @ 336:16112ef84609

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PyChan fixes: * Previous commits removed the ability to map events to unnamed widgets. Fixed.
author phoku@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 24 Aug 2009 15:34:23 +0000
parents 48c99636453e
children dfd48d49c044
rev   line source
331
48c99636453e Added Licence header to all pypthon modules in extension/
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 # ####################################################################
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5 # Copyright (C) 2005-2009 by the FIFE team
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6 # http://www.fifengine.de
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7 # This file is part of FIFE.
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8 #
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9 # FIFE is free software; you can redistribute it and/or
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10 # modify it under the terms of the GNU Lesser General Public
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11 # License as published by the Free Software Foundation; either
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12 # version 2.1 of the License, or (at your option) any later version.
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13 #
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14 # This library is distributed in the hope that it will be useful,
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15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
48c99636453e Added Licence header to all pypthon modules in extension/
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16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 # Lesser General Public License for more details.
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18 #
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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19 # You should have received a copy of the GNU Lesser General Public
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phoku@33b003aa-7bff-0310-803a-e67f0ece8222
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20 # License along with this library; if not, write to the
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21 # Free Software Foundation, Inc.,
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22 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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23 # ####################################################################
0
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24
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25 """
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26 Simple error checking attributes.
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27
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28 This module defines a set of Attribute classes
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29 which you can use to define possible values
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30 an attribute of an object accepts.
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31
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32 Usage::
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33 class SomeObject:
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34 nameAttr, posAttr = [ Attr("name"), PointAttr("pos") ]
188
06dddc96ce54 * Fixed some space and tab mixing
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35
0
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36 obj = SomeObject()
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37 obj.nameAttr.set(obj,"newName")
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38 obj.posAttr.set(obj,"89,89")
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39
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40 This is most useful for error checking parsing and defining
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41 accepted attributes in classes and is used by pychan internally.
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42
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43 """
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44
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45 from exceptions import ParserError
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46
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47 class Attr(object):
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48 """
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49 A simple text attribute.
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50 """
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51 def __init__(self,name):
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52 self.name = name
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53
0
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54 def set(self,obj,value):
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55 """
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56 Parses the given value with the L{parse} method
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57 and sets it on the given instance with C{setattr}.
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58 """
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59 value = self.parse(value)
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60 setattr(obj,self.name,value)
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61
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62 def parse(self,value):
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63 """
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64 Parses a value and checks for errors.
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65 Override with specialiced behaviour.
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66 """
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67 return str(value)
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68
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69 class UnicodeAttr(Attr):
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70 def parse(self,value):
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71 """
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72 Parses a value and checks for errors.
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73 Override with specialiced behaviour.
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74 """
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75 return unicode(value)
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76
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77
0
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78 class PointAttr(Attr):
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79 def parse(self,value):
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80 try:
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81 x,y = tuple(map(int,str(value).split(',')))
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82 return x,y
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83 except:
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84 raise ParserError("Expected a comma separated list of two integers.")
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85
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86 class ColorAttr(Attr):
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87 def parse(self,value):
123
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88 a = 255
0
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89 try:
123
ec653fde64d3 - modified pychan to accept r,g,b,a colors - default of a = 255, so you also just can use r, g, b
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90 try:
ec653fde64d3 - modified pychan to accept r,g,b,a colors - default of a = 255, so you also just can use r, g, b
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91 r,g,b,a = tuple(map(int,str(value).split(',')))
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92 for c in (r,g,b,a):
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93 if not 0 <= c < 256: raise ParserError("Expected a color (Failed: 0 <= %d <= 255)" %c)
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94 except:
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95 r,g,b = tuple(map(int,str(value).split(',')))
ec653fde64d3 - modified pychan to accept r,g,b,a colors - default of a = 255, so you also just can use r, g, b
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96 for c in (r,g,b):
ec653fde64d3 - modified pychan to accept r,g,b,a colors - default of a = 255, so you also just can use r, g, b
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97 if not 0 <= c < 256: raise ParserError("Expected a color (Failed: 0 <= %d <= 255)" %c)
0
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98 except:
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99 raise ParserError("Expected an color.")
123
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100
ec653fde64d3 - modified pychan to accept r,g,b,a colors - default of a = 255, so you also just can use r, g, b
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101 return r,g,b,a
0
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102
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103 class IntAttr(Attr):
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104 def parse(self,value):
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105 try:
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106 return int(value)
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107 except:
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108 raise ParserError("Expected a single integer.")
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109
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110 class BoolAttr(Attr):
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
111 def parse(self,value):
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
112 try:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
113 value = int(value)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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114 if value not in (0,1):
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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115 raise ParserError("Expected a 0 or 1.")
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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116 return value
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
117 except:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
118 raise ParserError("Expected a 0 or 1.")
188
06dddc96ce54 * Fixed some space and tab mixing
nihathrael@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 143
diff changeset
119
143
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
120 class FloatAttr(Attr):
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
121 def parse(self, value):
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
122 try:
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
123 return float(value)
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
124 except:
fe7ff4808529 - added guichan slider widget to pychan gui wrapper
chewie@33b003aa-7bff-0310-803a-e67f0ece8222
parents: 129
diff changeset
125 raise ParseError("Expected a float.")