Chris@0: # redMine - project management software
Chris@0: # Copyright (C) 2006-2007  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: module Redmine
Chris@0:   module Themes
Chris@0:   
Chris@0:     # Return an array of installed themes
Chris@0:     def self.themes
Chris@0:       @@installed_themes ||= scan_themes
Chris@0:     end
Chris@0:     
Chris@0:     # Rescan themes directory
Chris@0:     def self.rescan
Chris@0:       @@installed_themes = scan_themes
Chris@0:     end
Chris@0:     
Chris@0:     # Return theme for given id, or nil if it's not found
Chris@117:     def self.theme(id, options={})
Chris@117:       return nil if id.blank?
Chris@117:       
Chris@117:       found = themes.find {|t| t.id == id}
Chris@117:       if found.nil? && options[:rescan] != false
Chris@117:         rescan
Chris@117:         found = theme(id, :rescan => false)
Chris@117:       end
Chris@117:       found
Chris@0:     end
Chris@0:   
Chris@0:     # Class used to represent a theme
Chris@0:     class Theme
Chris@117:       attr_reader :path, :name, :dir
Chris@0:       
Chris@0:       def initialize(path)
Chris@117:         @path = path
Chris@0:         @dir = File.basename(path)
Chris@0:         @name = @dir.humanize
Chris@117:         @stylesheets = nil
Chris@117:         @javascripts = nil
Chris@0:       end
Chris@0:       
Chris@0:       # Directory name used as the theme id
Chris@0:       def id; dir end
Chris@117:       
Chris@117:       def ==(theme)
Chris@117:         theme.is_a?(Theme) && theme.dir == dir
Chris@117:       end
Chris@117:       
Chris@0:       def <=>(theme)
Chris@0:         name <=> theme.name
Chris@0:       end
Chris@117:       
Chris@117:       def stylesheets
Chris@117:         @stylesheets ||= assets("stylesheets", "css")
Chris@117:       end
Chris@117:       
Chris@117:       def javascripts
Chris@117:         @javascripts ||= assets("javascripts", "js")
Chris@117:       end
Chris@117:       
Chris@117:       def stylesheet_path(source)
Chris@117:         "/themes/#{dir}/stylesheets/#{source}"
Chris@117:       end
Chris@117:       
Chris@117:       def javascript_path(source)
Chris@117:         "/themes/#{dir}/javascripts/#{source}"
Chris@117:       end
Chris@117:       
Chris@117:       private
Chris@117:       
Chris@117:       def assets(dir, ext)
Chris@117:         Dir.glob("#{path}/#{dir}/*.#{ext}").collect {|f| File.basename(f).gsub(/\.#{ext}$/, '')}
Chris@117:       end
Chris@0:     end
Chris@0:     
Chris@0:     private
Chris@117:     
Chris@0:     def self.scan_themes
Chris@0:       dirs = Dir.glob("#{Rails.public_path}/themes/*").select do |f|
Chris@0:         # A theme should at least override application.css
Chris@0:         File.directory?(f) && File.exist?("#{f}/stylesheets/application.css")
Chris@0:       end
Chris@0:       dirs.collect {|dir| Theme.new(dir)}.sort
Chris@0:     end
Chris@0:   end
Chris@0: end
Chris@0: 
Chris@0: module ApplicationHelper
Chris@117:   def current_theme
Chris@117:     unless instance_variable_defined?(:@current_theme)
Chris@117:       @current_theme = Redmine::Themes.theme(Setting.ui_theme)
Chris@117:     end
Chris@117:     @current_theme
Chris@117:   end
Chris@117:   
Chris@0:   def stylesheet_path(source)
Chris@117:     if current_theme && current_theme.stylesheets.include?(source)
Chris@117:       super current_theme.stylesheet_path(source)
Chris@117:     else
Chris@117:       super
Chris@117:     end
Chris@0:   end
Chris@0:   
Chris@0:   def path_to_stylesheet(source)
Chris@0:     stylesheet_path source
Chris@0:   end
Chris@117:   
Chris@117:   # Returns the header tags for the current theme
Chris@117:   def heads_for_theme
Chris@117:     if current_theme && current_theme.javascripts.include?('theme')
Chris@117:       javascript_include_tag current_theme.javascript_path('theme')
Chris@117:     end
Chris@117:   end
Chris@0: end