OpenProject is the leading open source project management software.
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openproject/lib/open_project/themes/theme_finder.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2017 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# 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.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
module OpenProject
module Themes
module ThemeFinder
class << self
##
# A list of all available themes.
# aliased to :all
def themes
@_themes ||= []
end
alias_method :all, :themes
##
# Returns a hash with theme identifiers as keys,
# pointing to their Theme objects.
def registered_themes
@_registered_themes ||= \
themes.each_with_object({}.with_indifferent_access) do |theme, themes|
themes[theme.identifier] = theme
end
end
delegate :fetch, to: :registered_themes
##
# Registers a theme instance, so that it is listed
# in `themes` and `registered_themes`.
# Every Theme, which is subclassed from OpenProject::Themes::Theme
# automatically registers itself using this method.
#
# params: theme (a OpenProject::Themes::Theme instance)
def register_theme(theme)
themes << theme
clear_cache
# register the theme's stylesheet manifest with rails' asset pipeline
# we need to wrap the call to #stylesheet_manifest in a Proc,
# because when this code is executed the theme instance (theme) hasn't had
# a chance to override the method yet
Rails.application.config.assets.precompile << -> (path, *_args) {
return if theme.abstract?
theme.stylesheet_manifest == path
}
end
def forget_theme(theme)
remove_asset_pipeline_proc(theme)
themes.delete(theme)
clear_cache
end
def clear_themes
remove_all_asset_pipeline_procs
themes.clear
clear_cache
end
include Enumerable
delegate :each, to: :themes
private
def remove_asset_pipeline_proc(theme)
Rails.application.config.assets.precompile.delete_if do |item|
item.is_a?(Proc) and extract_theme(item) == theme
end
end
def remove_all_asset_pipeline_procs
Rails.application.config.assets.precompile.delete_if do |item|
item.is_a?(Proc) and extract_theme(item).is_a?(OpenProject::Themes::Theme)
end
end
def extract_theme(proc)
proc.binding.eval('theme if local_variables.include? :theme')
end
def clear_cache
@_registered_themes = nil
end
end
end
end
end