1  # encoding: utf-8
   2  #
   3  # Redmine - project management software
   4  # Copyright (C) 2006-2011  Jean-Philippe Lang
   5  #
   6  # This program is free software; you can redistribute it and/or
   7  # modify it under the terms of the GNU General Public License
   8  # as published by the Free Software Foundation; either version 2
   9  # of the License, or (at your option) any later version.
  10  #
  11  # This program is distributed in the hope that it will be useful,
  12  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  # GNU General Public License for more details.
  15  #
  16  # You should have received a copy of the GNU General Public License
  17  # along with this program; if not, write to the Free Software
  18  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19 
  20  module GanttHelper
  21 
  22    def gantt_zoom_link(gantt, in_or_out)
  23      case in_or_out
  24      when :in
  25        if gantt.zoom < 4
  26          link_to_content_update l(:text_zoom_in),
  27            params.merge(gantt.params.merge(:zoom => (gantt.zoom+1))),
  28            :class => 'icon icon-zoom-in'
  29        else
  30          content_tag('span', l(:text_zoom_in), :class => 'icon icon-zoom-in').html_safe
  31        end
  32 
  33      when :out
  34        if gantt.zoom > 1
  35          link_to_content_update l(:text_zoom_out),
  36            params.merge(gantt.params.merge(:zoom => (gantt.zoom-1))),
  37            :class => 'icon icon-zoom-out'
  38        else
  39          content_tag('span', l(:text_zoom_out), :class => 'icon icon-zoom-out').html_safe
  40        end
  41      end
  42    end
  43  end