view lib/redmine/themes.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# Redmine - project management software
# Copyright (C) 2006-2011  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 Redmine
  module Themes

    # Return an array of installed themes
    def self.themes
      @@installed_themes ||= scan_themes
    end

    # Rescan themes directory
    def self.rescan
      @@installed_themes = scan_themes
    end

    # Return theme for given id, or nil if it's not found
    def self.theme(id, options={})
      return nil if id.blank?

      found = themes.find {|t| t.id == id}
      if found.nil? && options[:rescan] != false
        rescan
        found = theme(id, :rescan => false)
      end
      found
    end

    # Class used to represent a theme
    class Theme
      attr_reader :path, :name, :dir

      def initialize(path)
        @path = path
        @dir = File.basename(path)
        @name = @dir.humanize
        @stylesheets = nil
        @javascripts = nil
      end

      # Directory name used as the theme id
      def id; dir end

      def ==(theme)
        theme.is_a?(Theme) && theme.dir == dir
      end

      def <=>(theme)
        name <=> theme.name
      end

      def stylesheets
        @stylesheets ||= assets("stylesheets", "css")
      end

      def javascripts
        @javascripts ||= assets("javascripts", "js")
      end

      def stylesheet_path(source)
        "/themes/#{dir}/stylesheets/#{source}"
      end

      def javascript_path(source)
        "/themes/#{dir}/javascripts/#{source}"
      end

      private

      def assets(dir, ext)
        Dir.glob("#{path}/#{dir}/*.#{ext}").collect {|f| File.basename(f).gsub(/\.#{ext}$/, '')}
      end
    end

    private

    def self.scan_themes
      dirs = Dir.glob("#{Rails.public_path}/themes/*").select do |f|
        # A theme should at least override application.css
        File.directory?(f) && File.exist?("#{f}/stylesheets/application.css")
      end
      dirs.collect {|dir| Theme.new(dir)}.sort
    end
  end
end

module ApplicationHelper
  def current_theme
    unless instance_variable_defined?(:@current_theme)
      @current_theme = Redmine::Themes.theme(Setting.ui_theme)
    end
    @current_theme
  end

  def stylesheet_path(source)
    if current_theme && current_theme.stylesheets.include?(source)
      super current_theme.stylesheet_path(source)
    else
      super
    end
  end

  def path_to_stylesheet(source)
    stylesheet_path source
  end

  # Returns the header tags for the current theme
  def heads_for_theme
    if current_theme && current_theme.javascripts.include?('theme')
      javascript_include_tag current_theme.javascript_path('theme')
    end
  end
end