diff app/helpers/wiki_helper.rb @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/helpers/wiki_helper.rb	Fri Jul 23 15:52:44 2010 +0100
@@ -0,0 +1,69 @@
+# redMine - project management software
+# Copyright (C) 2006-2007  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+module WikiHelper
+  
+  def wiki_page_options_for_select(pages, selected = nil, parent = nil, level = 0)
+    s = ''
+    pages.select {|p| p.parent == parent}.each do |page|
+      attrs = "value='#{page.id}'"
+      attrs << " selected='selected'" if selected == page
+      indent = (level > 0) ? ('&nbsp;' * level * 2 + '&#187; ') : nil
+      
+      s << "<option value='#{page.id}'>#{indent}#{h page.pretty_title}</option>\n" + 
+             wiki_page_options_for_select(pages, selected, page, level + 1)
+    end
+    s
+  end
+  
+  def html_diff(wdiff)
+    words = wdiff.words.collect{|word| h(word)}
+    words_add = 0
+    words_del = 0
+    dels = 0
+    del_off = 0
+    wdiff.diff.diffs.each do |diff|
+      add_at = nil
+      add_to = nil
+      del_at = nil
+      deleted = ""	    
+      diff.each do |change|
+        pos = change[1]
+        if change[0] == "+"
+          add_at = pos + dels unless add_at
+          add_to = pos + dels
+          words_add += 1
+        else
+          del_at = pos unless del_at
+          deleted << ' ' + h(change[2])
+          words_del	 += 1
+        end
+      end
+      if add_at
+        words[add_at] = '<span class="diff_in">' + words[add_at]
+        words[add_to] = words[add_to] + '</span>'
+      end
+      if del_at
+        words.insert del_at - del_off + dels + words_add, '<span class="diff_out">' + deleted + '</span>'
+        dels += 1
+        del_off += words_del
+        words_del = 0
+      end
+    end
+    simple_format_without_paragraph(words.join(' '))
+  end
+end