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	git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4293 e93f8b46-1217-0410-a6f0-8f06a7374b81
		
			
				
	
	
		
			279 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			279 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| # redMine - project management software
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| # Copyright (C) 2006-2007  Jean-Philippe Lang
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| #
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| # This program is free software; you can redistribute it and/or
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| # modify it under the terms of the GNU General Public License
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| # as published by the Free Software Foundation; either version 2
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| # of the License, or (at your option) any later version.
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| # 
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| # This program is distributed in the hope that it will be useful,
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| # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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| # GNU General Public License for more details.
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| # 
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| # You should have received a copy of the GNU General Public License
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| # along with this program; if not, write to the Free Software
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| # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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| 
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| module Redmine #:nodoc:
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| 
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|   class PluginNotFound < StandardError; end
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|   class PluginRequirementError < StandardError; end
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|   
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|   # Base class for Redmine plugins.
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|   # Plugins are registered using the <tt>register</tt> class method that acts as the public constructor.
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|   # 
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|   #   Redmine::Plugin.register :example do
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|   #     name 'Example plugin'
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|   #     author 'John Smith'
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|   #     description 'This is an example plugin for Redmine'
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|   #     version '0.0.1'
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|   #     settings :default => {'foo'=>'bar'}, :partial => 'settings/settings'
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|   #   end
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|   # 
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|   # === Plugin attributes
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|   # 
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|   # +settings+ is an optional attribute that let the plugin be configurable.
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|   # It must be a hash with the following keys:
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|   # * <tt>:default</tt>: default value for the plugin settings
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|   # * <tt>:partial</tt>: path of the configuration partial view, relative to the plugin <tt>app/views</tt> directory
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|   # Example:
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|   #   settings :default => {'foo'=>'bar'}, :partial => 'settings/settings'
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|   # In this example, the settings partial will be found here in the plugin directory: <tt>app/views/settings/_settings.rhtml</tt>.
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|   # 
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|   # When rendered, the plugin settings value is available as the local variable +settings+
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|   class Plugin
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|     @registered_plugins = {}
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|     class << self
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|       attr_reader :registered_plugins
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|       private :new
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| 
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|       def def_field(*names)
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|         class_eval do 
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|           names.each do |name|
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|             define_method(name) do |*args| 
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|               args.empty? ? instance_variable_get("@#{name}") : instance_variable_set("@#{name}", *args)
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|             end
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|           end
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|         end
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|       end
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|     end
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|     def_field :name, :description, :url, :author, :author_url, :version, :settings
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|     attr_reader :id
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|     
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|     # Plugin constructor
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|     def self.register(id, &block)
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|       p = new(id)
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|       p.instance_eval(&block)
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|       # Set a default name if it was not provided during registration
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|       p.name(id.to_s.humanize) if p.name.nil?
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|       # Adds plugin locales if any
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|       # YAML translation files should be found under <plugin>/config/locales/
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|       ::I18n.load_path += Dir.glob(File.join(RAILS_ROOT, 'vendor', 'plugins', id.to_s, 'config', 'locales', '*.yml'))
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|       registered_plugins[id] = p
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|     end
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|     
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|     # Returns an array off all registered plugins
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|     def self.all
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|       registered_plugins.values.sort
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|     end
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|     
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|     # Finds a plugin by its id
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|     # Returns a PluginNotFound exception if the plugin doesn't exist
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|     def self.find(id)
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|       registered_plugins[id.to_sym] || raise(PluginNotFound)
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|     end
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|     
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|     # Clears the registered plugins hash
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|     # It doesn't unload installed plugins
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|     def self.clear
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|       @registered_plugins = {}
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|     end
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| 
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|     # Checks if a plugin is installed
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|     #
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|     # @param [String] id name of the plugin
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|     def self.installed?(id)
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|       registered_plugins[id.to_sym].present?
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|     end
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|     
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|     def initialize(id)
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|       @id = id.to_sym
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|     end
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|     
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|     def <=>(plugin)
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|       self.id.to_s <=> plugin.id.to_s
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|     end
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|     
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|     # Sets a requirement on Redmine version
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|     # Raises a PluginRequirementError exception if the requirement is not met
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|     #
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|     # Examples
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|     #   # Requires Redmine 0.7.3 or higher
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|     #   requires_redmine :version_or_higher => '0.7.3'
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|     #   requires_redmine '0.7.3'
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|     #
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|     #   # Requires a specific Redmine version
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|     #   requires_redmine :version => '0.7.3'              # 0.7.3 only
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|     #   requires_redmine :version => ['0.7.3', '0.8.0']   # 0.7.3 or 0.8.0
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|     def requires_redmine(arg)
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|       arg = { :version_or_higher => arg } unless arg.is_a?(Hash)
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|       arg.assert_valid_keys(:version, :version_or_higher)
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|       
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|       current = Redmine::VERSION.to_a
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|       arg.each do |k, v|
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|         v = [] << v unless v.is_a?(Array)
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|         versions = v.collect {|s| s.split('.').collect(&:to_i)}
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|         case k
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|         when :version_or_higher
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|           raise ArgumentError.new("wrong number of versions (#{versions.size} for 1)") unless versions.size == 1
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|           unless (current <=> versions.first) >= 0
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|             raise PluginRequirementError.new("#{id} plugin requires Redmine #{v} or higher but current is #{current.join('.')}")
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|           end
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|         when :version
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|           unless versions.include?(current.slice(0,3))
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|             raise PluginRequirementError.new("#{id} plugin requires one the following Redmine versions: #{v.join(', ')} but current is #{current.join('.')}")
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|           end
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|         end
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|       end
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|       true
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|     end
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| 
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|     # Sets a requirement on a Redmine plugin version
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|     # Raises a PluginRequirementError exception if the requirement is not met
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|     #
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|     # Examples
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|     #   # Requires a plugin named :foo version 0.7.3 or higher
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|     #   requires_redmine_plugin :foo, :version_or_higher => '0.7.3'
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|     #   requires_redmine_plugin :foo, '0.7.3'
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|     #
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|     #   # Requires a specific version of a Redmine plugin
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|     #   requires_redmine_plugin :foo, :version => '0.7.3'              # 0.7.3 only
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|     #   requires_redmine_plugin :foo, :version => ['0.7.3', '0.8.0']   # 0.7.3 or 0.8.0
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|     def requires_redmine_plugin(plugin_name, arg)
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|       arg = { :version_or_higher => arg } unless arg.is_a?(Hash)
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|       arg.assert_valid_keys(:version, :version_or_higher)
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| 
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|       plugin = Plugin.find(plugin_name)
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|       current = plugin.version.split('.').collect(&:to_i)
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| 
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|       arg.each do |k, v|
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|         v = [] << v unless v.is_a?(Array)
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|         versions = v.collect {|s| s.split('.').collect(&:to_i)}
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|         case k
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|         when :version_or_higher
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|           raise ArgumentError.new("wrong number of versions (#{versions.size} for 1)") unless versions.size == 1
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|           unless (current <=> versions.first) >= 0
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|             raise PluginRequirementError.new("#{id} plugin requires the #{plugin_name} plugin #{v} or higher but current is #{current.join('.')}")
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|           end
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|         when :version
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|           unless versions.include?(current.slice(0,3))
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|             raise PluginRequirementError.new("#{id} plugin requires one the following versions of #{plugin_name}: #{v.join(', ')} but current is #{current.join('.')}")
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|           end
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|         end
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|       end
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|       true
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|     end
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| 
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|     # Adds an item to the given +menu+.
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|     # The +id+ parameter (equals to the project id) is automatically added to the url.
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|     #   menu :project_menu, :plugin_example, { :controller => 'example', :action => 'say_hello' }, :caption => 'Sample'
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|     #   
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|     # +name+ parameter can be: :top_menu, :account_menu, :application_menu or :project_menu
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|     # 
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|     def menu(menu, item, url, options={})
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|       Redmine::MenuManager.map(menu).push(item, url, options)
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|     end
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|     alias :add_menu_item :menu
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|     
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|     # Removes +item+ from the given +menu+.
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|     def delete_menu_item(menu, item)
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|       Redmine::MenuManager.map(menu).delete(item)
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|     end
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| 
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|     # Defines a permission called +name+ for the given +actions+.
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|     # 
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|     # The +actions+ argument is a hash with controllers as keys and actions as values (a single value or an array):
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|     #   permission :destroy_contacts, { :contacts => :destroy }
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|     #   permission :view_contacts, { :contacts => [:index, :show] }
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|     # 
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|     # The +options+ argument can be used to make the permission public (implicitly given to any user)
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|     # or to restrict users the permission can be given to.
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|     # 
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|     # Examples
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|     #   # A permission that is implicitly given to any user
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|     #   # This permission won't appear on the Roles & Permissions setup screen
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|     #   permission :say_hello, { :example => :say_hello }, :public => true
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|     # 
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|     #   # A permission that can be given to any user
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|     #   permission :say_hello, { :example => :say_hello }
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|     #   
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|     #   # A permission that can be given to registered users only
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|     #   permission :say_hello, { :example => :say_hello }, :require => :loggedin
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|     #   
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|     #   # A permission that can be given to project members only
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|     #   permission :say_hello, { :example => :say_hello }, :require => :member
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|     def permission(name, actions, options = {})
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|       if @project_module
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|         Redmine::AccessControl.map {|map| map.project_module(@project_module) {|map|map.permission(name, actions, options)}}
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|       else
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|         Redmine::AccessControl.map {|map| map.permission(name, actions, options)}
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|       end
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|     end
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|     
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|     # Defines a project module, that can be enabled/disabled for each project.
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|     # Permissions defined inside +block+ will be bind to the module.
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|     # 
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|     #   project_module :things do
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|     #     permission :view_contacts, { :contacts => [:list, :show] }, :public => true
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|     #     permission :destroy_contacts, { :contacts => :destroy }
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|     #   end
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|     def project_module(name, &block)
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|       @project_module = name
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|       self.instance_eval(&block)
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|       @project_module = nil
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|     end
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|     
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|     # Registers an activity provider.
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|     #
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|     # Options:
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|     # * <tt>:class_name</tt> - one or more model(s) that provide these events (inferred from event_type by default)
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|     # * <tt>:default</tt> - setting this option to false will make the events not displayed by default
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|     # 
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|     # A model can provide several activity event types.
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|     # 
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|     # Examples:
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|     #   register :news
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|     #   register :scrums, :class_name => 'Meeting'
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|     #   register :issues, :class_name => ['Issue', 'Journal']
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|     # 
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|     # Retrieving events:
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|     # Associated model(s) must implement the find_events class method.
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|     # ActiveRecord models can use acts_as_activity_provider as a way to implement this class method.
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|     # 
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|     # The following call should return all the scrum events visible by current user that occured in the 5 last days: 
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|     #   Meeting.find_events('scrums', User.current, 5.days.ago, Date.today)
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|     #   Meeting.find_events('scrums', User.current, 5.days.ago, Date.today, :project => foo) # events for project foo only
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|     # 
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|     # Note that :view_scrums permission is required to view these events in the activity view.
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|     def activity_provider(*args)
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|       Redmine::Activity.register(*args)
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|     end
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|     
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|     # Registers a wiki formatter.
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|     #
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|     # Parameters:
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|     # * +name+ - human-readable name
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|     # * +formatter+ - formatter class, which should have an instance method +to_html+
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|     # * +helper+ - helper module, which will be included by wiki pages
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|     def wiki_format_provider(name, formatter, helper)
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|       Redmine::WikiFormatting.register(name, formatter, helper)
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|     end
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| 
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|     # Returns +true+ if the plugin can be configured.
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|     def configurable?
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|       settings && settings.is_a?(Hash) && !settings[:partial].blank?
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|     end
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|   end
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| end
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