Redmine 3.4.4

lib/redmine/themes.rb

@@ -0,0 +1,143 @@
+# Redmine - project management software
+# Copyright (C) 2006-2017  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 images
+        @images ||= assets("images")
+      end
+
+      def javascripts
+        @javascripts ||= assets("javascripts", "js")
+      end
+
+      def favicons
+        @favicons ||= assets("favicon")
+      end
+
+      def favicon
+        favicons.first
+      end
+
+      def favicon?
+        favicon.present?
+      end
+
+      def stylesheet_path(source)
+        "/themes/#{dir}/stylesheets/#{source}"
+      end
+
+      def image_path(source)
+        "/themes/#{dir}/images/#{source}"
+      end
+
+      def javascript_path(source)
+        "/themes/#{dir}/javascripts/#{source}"
+      end
+
+      def favicon_path
+        "/themes/#{dir}/favicon/#{favicon}"
+      end
+
+      private
+
+      def assets(dir, ext=nil)
+        if ext
+          Dir.glob("#{path}/#{dir}/*.#{ext}").collect {|f| File.basename(f).gsub(/\.#{ext}$/, '')}
+        else
+          Dir.glob("#{path}/#{dir}/*").collect {|f| File.basename(f)}
+        end
+      end
+    end
+
+    module Helper
+      def current_theme
+        unless instance_variable_defined?(:@current_theme)
+          @current_theme = Redmine::Themes.theme(Setting.ui_theme)
+        end
+        @current_theme
+      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
+
+    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