Chris@1295: # Redmine - project management software
Chris@1295: # Copyright (C) 2006-2013  Jean-Philippe Lang
Chris@1295: #
Chris@1295: # This program is free software; you can redistribute it and/or
Chris@1295: # modify it under the terms of the GNU General Public License
Chris@1295: # as published by the Free Software Foundation; either version 2
Chris@1295: # of the License, or (at your option) any later version.
Chris@1295: #
Chris@1295: # This program is distributed in the hope that it will be useful,
Chris@1295: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@1295: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@1295: # GNU General Public License for more details.
Chris@1295: #
Chris@1295: # You should have received a copy of the GNU General Public License
Chris@1295: # along with this program; if not, write to the Free Software
Chris@1295: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@1295: 
Chris@1295: module Redmine
Chris@1295:   module Themes
Chris@1295: 
Chris@1295:     # Return an array of installed themes
Chris@1295:     def self.themes
Chris@1295:       @@installed_themes ||= scan_themes
Chris@1295:     end
Chris@1295: 
Chris@1295:     # Rescan themes directory
Chris@1295:     def self.rescan
Chris@1295:       @@installed_themes = scan_themes
Chris@1295:     end
Chris@1295: 
Chris@1295:     # Return theme for given id, or nil if it's not found
Chris@1295:     def self.theme(id, options={})
Chris@1295:       return nil if id.blank?
Chris@1295: 
Chris@1295:       found = themes.find {|t| t.id == id}
Chris@1295:       if found.nil? && options[:rescan] != false
Chris@1295:         rescan
Chris@1295:         found = theme(id, :rescan => false)
Chris@1295:       end
Chris@1295:       found
Chris@1295:     end
Chris@1295: 
Chris@1295:     # Class used to represent a theme
Chris@1295:     class Theme
Chris@1295:       attr_reader :path, :name, :dir
Chris@1295: 
Chris@1295:       def initialize(path)
Chris@1295:         @path = path
Chris@1295:         @dir = File.basename(path)
Chris@1295:         @name = @dir.humanize
Chris@1295:         @stylesheets = nil
Chris@1295:         @javascripts = nil
Chris@1295:       end
Chris@1295: 
Chris@1295:       # Directory name used as the theme id
Chris@1295:       def id; dir end
Chris@1295: 
Chris@1295:       def ==(theme)
Chris@1295:         theme.is_a?(Theme) && theme.dir == dir
Chris@1295:       end
Chris@1295: 
Chris@1295:       def <=>(theme)
Chris@1295:         name <=> theme.name
Chris@1295:       end
Chris@1295: 
Chris@1295:       def stylesheets
Chris@1295:         @stylesheets ||= assets("stylesheets", "css")
Chris@1295:       end
Chris@1295: 
Chris@1295:       def images
Chris@1295:         @images ||= assets("images")
Chris@1295:       end
Chris@1295: 
Chris@1295:       def javascripts
Chris@1295:         @javascripts ||= assets("javascripts", "js")
Chris@1295:       end
Chris@1295: 
Chris@1295:       def stylesheet_path(source)
Chris@1295:         "/themes/#{dir}/stylesheets/#{source}"
Chris@1295:       end
Chris@1295: 
Chris@1295:       def image_path(source)
Chris@1295:         "/themes/#{dir}/images/#{source}"
Chris@1295:       end
Chris@1295: 
Chris@1295:       def javascript_path(source)
Chris@1295:         "/themes/#{dir}/javascripts/#{source}"
Chris@1295:       end
Chris@1295: 
Chris@1295:       private
Chris@1295: 
Chris@1295:       def assets(dir, ext=nil)
Chris@1295:         if ext
Chris@1295:           Dir.glob("#{path}/#{dir}/*.#{ext}").collect {|f| File.basename(f).gsub(/\.#{ext}$/, '')}
Chris@1295:         else
Chris@1295:           Dir.glob("#{path}/#{dir}/*").collect {|f| File.basename(f)}
Chris@1295:         end
Chris@1295:       end
Chris@1295:     end
Chris@1295: 
Chris@1295:     private
Chris@1295: 
Chris@1295:     def self.scan_themes
Chris@1295:       dirs = Dir.glob("#{Rails.public_path}/themes/*").select do |f|
Chris@1295:         # A theme should at least override application.css
Chris@1295:         File.directory?(f) && File.exist?("#{f}/stylesheets/application.css")
Chris@1295:       end
Chris@1295:       dirs.collect {|dir| Theme.new(dir)}.sort
Chris@1295:     end
Chris@1295:   end
Chris@1295: end
Chris@1295: 
Chris@1295: module ApplicationHelper
Chris@1295:   def current_theme
Chris@1295:     unless instance_variable_defined?(:@current_theme)
Chris@1295:       @current_theme = Redmine::Themes.theme(Setting.ui_theme)
Chris@1295:     end
Chris@1295:     @current_theme
Chris@1295:   end
Chris@1295: 
Chris@1295:   # Returns the header tags for the current theme
Chris@1295:   def heads_for_theme
Chris@1295:     if current_theme && current_theme.javascripts.include?('theme')
Chris@1295:       javascript_include_tag current_theme.javascript_path('theme')
Chris@1295:     end
Chris@1295:   end
Chris@1295: end