annotate MoinMoin/macro/Navigation.py @ 4424:5ad5753ae311

pre-1.9: request.form has qs args and post data, 1.9: .form only post data, .args only qs args, .values both
author Thomas Waldmann <tw AT waldmann-edv DOT de>
date Sun, 16 Nov 2008 22:20:21 +0100
parents 21d9d7529304
children
rev   line source
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - Navigation Macro
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4
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5 @copyright: 2003 Juergen Hermann <jh@web.de>
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6 2008 MoinMoin:RadomirDopieralski
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7 @license: GNU GPL, see COPYING for details.
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8 """
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9
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10 import re
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11 from MoinMoin.Page import Page
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12 from MoinMoin import wikiutil
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13
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14 Dependencies = ["namespace"]
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15
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16 # helpers
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17 #!!! refactor these to an util module?
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18 def _getParent(pagename):
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19 """ Return parent of pagename.
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20 """
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21 pos = pagename.rfind('/')
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22 if pos >= 0:
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23 return pagename[:pos]
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24 return None
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25
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26
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27 def _getPages(request, filter_regex=None):
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28 """ Return a (filtered) list of pages names.
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29 """
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30 filterfn = None
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31 if filter_regex:
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32 filterfn = re.compile(filter_regex).match
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33 pages = request.rootpage.getPageList(filter=filterfn)
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34 pages.sort()
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35 return pages
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36
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37
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38 def _getLinks(request, pagename, filter_regex=None):
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39 """ Return pagename for up, first, prev, next, last; each can be None.
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40 """
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41 pos, first, prev, next, last = 0, None, None, None, None
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42
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43 all_pages = _getPages(request, filter_regex)
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44 size = len(all_pages)
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45
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46 if all_pages:
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47 try:
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48 pos = all_pages.index(pagename)
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49 except ValueError:
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50 # this should never happen in theory, but let's be sure
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51 pass
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52 else:
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53 if pos > 0:
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54 first = all_pages[0]
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55 prev = all_pages[pos-1]
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56 if pos+1 < len(all_pages):
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57 next = all_pages[pos+1]
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58 last = all_pages[-1]
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59
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60 return pos, size, (first, prev, next, last)
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61
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62
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63 class Navigation:
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64 """ Dispatcher class implementing the navigation schemes.
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65 """
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66
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67 # querystring for slideshow links
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68 PROJECTION = {'action': 'print', 'media': 'projection', }
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69
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70 def __init__(self, macro, scheme, depth):
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71 """ Prepare common values used during processing.
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72 """
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73 self.macro = macro
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74 self.scheme = scheme
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75 self.depth = depth
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76 self._ = self.macro.request.getText
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77
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78 self.pagename = self.macro.formatter.page.page_name
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79 self.print_mode = self.macro.request.action == 'print'
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80 self.media = self.macro.request.values.get('media')
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81 self.querystr = self.print_mode and self.PROJECTION or {}
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82
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83
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84 def dispatch(self):
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85 """ Return None if in plain print mode (no navigational
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86 elements in printouts), else the proper HTML code.
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87 """
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88 if self.print_mode and self.media != 'projection':
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89 return None
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90
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91 return getattr(self, 'do_%s' % self.scheme, self.badscheme)()
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92
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93
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94 def badscheme(self):
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95 """ Bad scheme argument.
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96 """
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97 _ = self._
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98 return (self.macro.formatter.sysmsg(1) +
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99 self.macro.formatter.text(
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100 _("Unsupported navigation scheme '%(scheme)s'!") %
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101 {'scheme': self.scheme}) +
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102 self.macro.formatter.sysmsg(0))
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103
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104
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105 def do_children(self):
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106 """ Navigate to subpages from a parent page.
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107 """
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108 # delegate to siblings code, setting the parent explicitely
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109 return self.do_siblings(root=self.pagename)
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110
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111
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112 def do_siblings(self, root=None):
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113 """ Navigate from a subpage to its siblings.
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114 """
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115 _ = self._
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116 request = self.macro.request
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117 # get parent page name
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118 parent = root or _getParent(self.pagename)
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119 if not parent:
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120 return (self.macro.formatter.sysmsg(1) +
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121 self.macro.formatter.text(_('No parent page found!'))+
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122 self.macro.formatter.sysmsg(0))
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123
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124 # iterate over children, adding links to all of them
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125 result = []
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126 children = _getPages(request, '^%s/' % re.escape(parent))
0
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127 for child in children:
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128 # display short page name, leaving out the parent path
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129 # (and make sure the name doesn't get wrapped)
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130 shortname = child[len(parent):]
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131
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132 # possibly limit depth
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133 if self.depth and shortname.count('/') > self.depth:
0
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134 continue
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135
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136 if child == self.pagename:
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137 # do not link to focus
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138 result.append(self.macro.formatter.text(shortname))
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139 else:
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140 # link to sibling / child
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141 result.append(Page(request, child).link_to(request, text=shortname, querystr=self.querystr))
0
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142 result.append(' &nbsp; ')
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143
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144 return ''.join(result)
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145
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146
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147 def do_slideshow(self, focus=None):
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148 """ Slideshow master page links.
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149
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150 If `focus` is set, it is the name of a slide page; these only
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151 get the mode toggle and edit links.
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152 """
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153 _ = self._
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154 curpage = focus or self.pagename
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155 result = []
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156 request = self.macro.request
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157 pg = Page(request, curpage)
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158 if self.print_mode:
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159 # projection mode
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160 label = _('Wiki')
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161 toggle = {}
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162 result.append(pg.link_to(request, text=_('Edit'), querystr={'action': 'edit'}))
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163 result.append(' &nbsp; ')
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164 else:
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165 # wiki mode
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166 label = _('Slideshow')
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167 toggle = self.PROJECTION
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168
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169 # add mode toggle link
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170 result.append(pg.link_to(request, text=label, querystr=toggle))
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171
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172 # leave out the following on slide pages
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173 if focus is None:
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174 children = _getPages(request, '^%s/' % re.escape(self.pagename))
0
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175 if children:
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176 # add link to first child if one exists
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177 result.append(' &nbsp; ')
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178 result.append(Page(request, children[0]).link_to(request, text=_('Start'), querystr=self.querystr))
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179
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180 return ''.join(result)
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181
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182
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183 def do_slides(self, root=None):
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184 """ Navigate within a slide show.
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185 """
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186 _ = self._
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187 request = self.macro.request
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188 parent = root or _getParent(self.pagename)
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189 if not parent:
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190 return (self.macro.formatter.sysmsg(1) +
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191 self.macro.formatter.text(_('No parent page found!')) +
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192 self.macro.formatter.sysmsg(0))
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193
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194 # prepare link generation
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195 result = []
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196 labels = ['^', '|<', '<<', '>>', '>|']
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197 filter_regex = '^%s/' % re.escape(parent)
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198 pos, size, links = _getLinks(request, self.pagename, filter_regex)
0
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199 pos += 1
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200 links = zip(labels, (parent, ) + links)
0
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201
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202 # generate links to neighborhood
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203 for label, name in links:
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204 result.append(' ')
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205 if name:
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206 # active link
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207 result.append(Page(request, name).link_to(request, text=label, querystr=self.querystr))
0
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208 else:
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209 # ghosted link
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210 result.append(self.macro.formatter.text(label))
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211 result.append(' ')
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212
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213 # position indicator in the middle
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214 if label == labels[2]:
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215 result.append(_('Slide %(pos)d of %(size)d') % {'pos': pos, 'size': size})
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216
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217 return self.do_slideshow(focus=self.pagename) + ''.join(result)
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218
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219
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220 def macro_Navigation(macro,
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221 scheme=wikiutil.required_arg((u'children', u'siblings',
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222 u'slideshow', u'slides')),
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223 depth=0):
0
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224 # get HTML code with the links
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diff changeset
225 navi = Navigation(macro, scheme, depth).dispatch()
0
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226
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227 if navi:
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228 # return links packed into a table
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229 return u'<table class="navigation"><tr><td>%s</td></tr></table>' % navi
0
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230
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231 # navigation disabled in plain print mode
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232 return u''
0
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233