Installing jrails

vendor/plugins/jrails/lib/jrails.rb

@@ -0,0 +1,421 @@
+module ActionView
+  module Helpers
+    
+    module JavaScriptHelper
+      
+      # This function can be used to render rjs inline
+      #
+      # <%= javascript_function do |page|
+      #   page.replace_html :list, :partial => 'list', :object => @list
+      # end %>
+      #
+      def javascript_function(*args, &block)
+        html_options = args.extract_options!
+        function = args[0] || ''
+
+        html_options.symbolize_keys!
+        function = update_page(&block) if block_given?
+        javascript_tag(function)
+      end
+      
+      def jquery_id(id)
+        id.to_s.count('#.*,>+~:[/ ') == 0 ? "##{id}" : id
+      end
+          
+      def jquery_ids(ids)
+        Array(ids).map{|id| jquery_id(id)}.join(',')
+      end
+
+    end
+    
+    module PrototypeHelper
+      
+      USE_PROTECTION = const_defined?(:DISABLE_JQUERY_FORGERY_PROTECTION) ? !DISABLE_JQUERY_FORGERY_PROTECTION : true
+
+      unless const_defined? :JQUERY_VAR
+        JQUERY_VAR = 'jQuery'
+      end
+          
+      unless const_defined? :JQCALLBACKS
+        JQCALLBACKS = Set.new([ :beforeSend, :complete, :error, :success ] + (100..599).to_a)
+        #instance_eval { remove_const :AJAX_OPTIONS }
+        remove_const(:AJAX_OPTIONS) if const_defined?(:AJAX_OPTIONS)
+        AJAX_OPTIONS = Set.new([ :before, :after, :condition, :url,
+                         :asynchronous, :method, :insertion, :position,
+                         :form, :with, :update, :script ]).merge(JQCALLBACKS)
+      end
+      
+      def periodically_call_remote(options = {})
+        frequency = options[:frequency] || 10 # every ten seconds by default
+        code = "setInterval(function() {#{remote_function(options)}}, #{frequency} * 1000)"
+        javascript_tag(code)
+      end
+      
+      def remote_function(options)
+        javascript_options = options_for_ajax(options)
+
+        update = ''
+        if options[:update] && options[:update].is_a?(Hash)
+          update  = []
+          update << "success:'#{options[:update][:success]}'" if options[:update][:success]
+          update << "failure:'#{options[:update][:failure]}'" if options[:update][:failure]
+          update  = '{' + update.join(',') + '}'
+        elsif options[:update]
+          update << "'#{options[:update]}'"
+        end
+
+        function = "#{JQUERY_VAR}.ajax(#{javascript_options})"
+
+        function = "#{options[:before]}; #{function}" if options[:before]
+        function = "#{function}; #{options[:after]}"  if options[:after]
+        function = "if (#{options[:condition]}) { #{function}; }" if options[:condition]
+        function = "if (confirm('#{escape_javascript(options[:confirm])}')) { #{function}; }" if options[:confirm]
+        return function
+      end
+      
+      class JavaScriptGenerator
+        module GeneratorMethods
+          
+          def insert_html(position, id, *options_for_render)
+            insertion = position.to_s.downcase
+            insertion = 'append' if insertion == 'bottom'
+            insertion = 'prepend' if insertion == 'top'
+            call "#{JQUERY_VAR}(\"#{jquery_id(id)}\").#{insertion}", render(*options_for_render)
+          end
+          
+          def replace_html(id, *options_for_render)
+            insert_html(:html, id, *options_for_render)
+          end
+          
+          def replace(id, *options_for_render)
+            call "#{JQUERY_VAR}(\"#{jquery_id(id)}\").replaceWith", render(*options_for_render)
+          end
+          
+          def remove(*ids)
+            call "#{JQUERY_VAR}(\"#{jquery_ids(ids)}\").remove"
+          end
+          
+          def show(*ids)
+            call "#{JQUERY_VAR}(\"#{jquery_ids(ids)}\").show"
+          end
+          
+          def hide(*ids)
+            call "#{JQUERY_VAR}(\"#{jquery_ids(ids)}\").hide"
+          end
+
+          def toggle(*ids)
+            call "#{JQUERY_VAR}(\"#{jquery_ids(ids)}\").toggle"
+          end
+          
+          def jquery_id(id)
+            id.to_s.count('#.*,>+~:[/ ') == 0 ? "##{id}" : id
+          end
+          
+          def jquery_ids(ids)
+            Array(ids).map{|id| jquery_id(id)}.join(',')
+          end
+          
+        end
+      end
+      
+    protected
+      def options_for_ajax(options)
+        js_options = build_callbacks(options)
+        
+        url_options = options[:url]
+        url_options = url_options.merge(:escape => false) if url_options.is_a?(Hash)
+        js_options['url'] = "'#{url_for(url_options)}'"
+        js_options['async'] = false if options[:type] == :synchronous
+        js_options['type'] = options[:method] ? method_option_to_s(options[:method]) : ( options[:form] ? "'post'" : nil )
+        js_options['dataType'] = options[:datatype] ? "'#{options[:datatype]}'" : (options[:update] ? nil : "'script'")
+        
+        if options[:form]
+          js_options['data'] = "#{JQUERY_VAR}.param(#{JQUERY_VAR}(this).serializeArray())"
+        elsif options[:submit]
+          js_options['data'] = "#{JQUERY_VAR}(\"##{options[:submit]} :input\").serialize()"
+        elsif options[:with]
+          js_options['data'] = options[:with].gsub("Form.serialize(this.form)","#{JQUERY_VAR}.param(#{JQUERY_VAR}(this.form).serializeArray())")
+        end
+        
+        js_options['type'] ||= "'post'"
+        if options[:method]
+          if method_option_to_s(options[:method]) == "'put'" || method_option_to_s(options[:method]) == "'delete'"
+            js_options['type'] = "'post'"
+            if js_options['data']
+              js_options['data'] << " + '&"
+            else
+              js_options['data'] = "'"
+            end
+            js_options['data'] << "_method=#{options[:method]}'"
+          end
+        end
+        
+        if USE_PROTECTION && respond_to?('protect_against_forgery?') && protect_against_forgery?
+          if js_options['data']
+            js_options['data'] << " + '&"
+          else
+            js_options['data'] = "'"
+          end
+          js_options['data'] << "#{request_forgery_protection_token}=' + encodeURIComponent('#{escape_javascript form_authenticity_token}')"
+        end
+        js_options['data'] = "''" if js_options['type'] == "'post'" && js_options['data'].nil?
+        options_for_javascript(js_options.reject {|key, value| value.nil?})
+      end
+      
+      def build_update_for_success(html_id, insertion=nil)
+        insertion = build_insertion(insertion)
+        "#{JQUERY_VAR}('#{jquery_id(html_id)}').#{insertion}(request);"
+      end
+
+      def build_update_for_error(html_id, insertion=nil)
+        insertion = build_insertion(insertion)
+        "#{JQUERY_VAR}('#{jquery_id(html_id)}').#{insertion}(request.responseText);"
+      end
+
+      def build_insertion(insertion)
+        insertion = insertion ? insertion.to_s.downcase : 'html'
+        insertion = 'append' if insertion == 'bottom'
+        insertion = 'prepend' if insertion == 'top'
+        insertion
+      end
+
+      def build_observer(klass, name, options = {})
+        if options[:with] && (options[:with] !~ /[\{=(.]/)
+          options[:with] = "'#{options[:with]}=' + value"
+        else
+          options[:with] ||= 'value' unless options[:function]
+        end
+
+        callback = options[:function] || remote_function(options)
+        javascript  = "#{JQUERY_VAR}('#{jquery_id(name)}').delayedObserver("
+        javascript << "#{options[:frequency] || 0}, "
+        javascript << "function(element, value) {"
+        javascript << "#{callback}}"
+        #javascript << ", '#{options[:on]}'" if options[:on]
+        javascript << ")"
+        javascript_tag(javascript)
+      end
+      
+      def build_callbacks(options)
+        callbacks = {}
+        options[:beforeSend] = '';
+        [:uninitialized,:loading].each do |key|
+          options[:beforeSend] << (options[key].last == ';' ? options.delete(key) : options.delete(key) << ';') if options[key]
+        end
+        options.delete(:beforeSend) if options[:beforeSend].blank?
+        options[:complete] = options.delete(:loaded) if options[:loaded] 
+        options[:error] = options.delete(:failure) if options[:failure]
+        if options[:update]
+          if options[:update].is_a?(Hash)
+            options[:update][:error] = options[:update].delete(:failure) if options[:update][:failure]
+            if options[:update][:success]
+              options[:success] = build_update_for_success(options[:update][:success], options[:position]) << (options[:success] ? options[:success] : '')
+            end
+            if options[:update][:error]
+              options[:error] = build_update_for_error(options[:update][:error], options[:position]) << (options[:error] ? options[:error] : '')
+            end
+          else
+            options[:success] = build_update_for_success(options[:update], options[:position]) << (options[:success] ? options[:success] : '')
+          end
+        end
+        options.each do |callback, code|
+          if JQCALLBACKS.include?(callback)
+            callbacks[callback] = "function(request){#{code}}"
+          end
+        end
+        callbacks
+      end
+      
+    end
+    
+    class JavaScriptElementProxy < JavaScriptProxy #:nodoc:
+      
+      unless const_defined? :JQUERY_VAR
+        JQUERY_VAR = PrototypeHelper::JQUERY_VAR
+      end
+      
+      def initialize(generator, id)
+        id = id.to_s.count('#.*,>+~:[/ ') == 0 ? "##{id}" : id
+        @id = id
+        super(generator, "#{JQUERY_VAR}(\"#{id}\")")
+      end
+      
+      def replace_html(*options_for_render)
+        call 'html', @generator.send(:render, *options_for_render)
+      end
+
+      def replace(*options_for_render)
+        call 'replaceWith', @generator.send(:render, *options_for_render)
+      end
+      
+      def reload(options_for_replace={})
+        replace(options_for_replace.merge({ :partial => @id.to_s.sub(/^#/,'') }))
+      end
+      
+      def value()
+        call 'val()'
+      end
+
+      def value=(value)
+        call 'val', value
+      end
+      
+    end
+    
+    class JavaScriptElementCollectionProxy < JavaScriptCollectionProxy #:nodoc:\
+      
+      unless const_defined? :JQUERY_VAR
+        JQUERY_VAR = PrototypeHelper::JQUERY_VAR
+      end
+      
+      def initialize(generator, pattern)
+        super(generator, "#{JQUERY_VAR}(#{pattern.to_json})")
+      end
+    end
+    
+    module ScriptaculousHelper
+      
+      unless const_defined? :JQUERY_VAR
+        JQUERY_VAR = PrototypeHelper::JQUERY_VAR
+      end
+      
+      unless const_defined? :SCRIPTACULOUS_EFFECTS
+        SCRIPTACULOUS_EFFECTS = {
+          :appear => {:method => 'fadeIn'},
+          :blind_down => {:method => 'blind', :mode => 'show', :options => {:direction => 'vertical'}},
+          :blind_up => {:method => 'blind', :mode => 'hide', :options => {:direction => 'vertical'}},
+          :blind_right => {:method => 'blind', :mode => 'show', :options => {:direction => 'horizontal'}},
+          :blind_left => {:method => 'blind', :mode => 'hide', :options => {:direction => 'horizontal'}},
+          :bounce_in => {:method => 'bounce', :mode => 'show', :options => {:direction => 'up'}},
+          :bounce_out => {:method => 'bounce', :mode => 'hide', :options => {:direction => 'up'}},
+          :drop_in => {:method => 'drop', :mode => 'show', :options => {:direction => 'up'}},
+          :drop_out => {:method => 'drop', :mode => 'hide', :options => {:direction => 'down'}},
+          :fade => {:method => 'fadeOut'},
+          :fold_in => {:method => 'fold', :mode => 'hide'},
+          :fold_out => {:method => 'fold', :mode => 'show'},
+          :grow => {:method => 'scale', :mode => 'show'},
+          :shrink => {:method => 'scale', :mode => 'hide'},
+          :slide_down => {:method => 'slide', :mode => 'show', :options => {:direction => 'up'}},
+          :slide_up => {:method => 'slide', :mode => 'hide', :options => {:direction => 'up'}},
+          :slide_right => {:method => 'slide', :mode => 'show', :options => {:direction => 'left'}},
+          :slide_left => {:method => 'slide', :mode => 'hide', :options => {:direction => 'left'}},
+          :squish => {:method => 'scale', :mode => 'hide', :options => {:origin => "['top','left']"}},
+          :switch_on => {:method => 'clip', :mode => 'show', :options => {:direction => 'vertical'}},
+          :switch_off => {:method => 'clip', :mode => 'hide', :options => {:direction => 'vertical'}},
+          :toggle_appear => {:method => 'fadeToggle'},
+          :toggle_slide => {:method => 'slide', :mode => 'toggle', :options => {:direction => 'up'}},
+          :toggle_blind => {:method => 'blind', :mode => 'toggle', :options => {:direction => 'vertical'}},
+        }
+      end
+      
+      def visual_effect(name, element_id = false, js_options = {})
+        element = element_id ? element_id : "this"
+        
+        if SCRIPTACULOUS_EFFECTS.has_key? name.to_sym
+          effect = SCRIPTACULOUS_EFFECTS[name.to_sym]
+          name = effect[:method]
+          mode = effect[:mode]
+          js_options = js_options.merge(effect[:options]) if effect[:options]
+        end
+        
+        [:color, :direction, :startcolor, :endcolor].each do |option|
+          js_options[option] = "'#{js_options[option]}'" if js_options[option]
+        end
+        
+        if js_options.has_key? :duration
+          speed = js_options.delete :duration
+          speed = (speed * 1000).to_i unless speed.nil?
+        else
+          speed = js_options.delete :speed
+        end
+        
+        if ['fadeIn','fadeOut','fadeToggle'].include?(name)
+          javascript = "#{JQUERY_VAR}('#{jquery_id(element_id)}').#{name}("
+          javascript << "#{speed}" unless speed.nil?
+          javascript << ");"
+        else
+          javascript = "#{JQUERY_VAR}('#{jquery_id(element_id)}').#{mode || 'effect'}('#{name}'"
+          javascript << ",#{options_for_javascript(js_options)}" unless speed.nil? && js_options.empty?
+          javascript << ",#{speed}" unless speed.nil?
+          javascript << ");"
+        end
+        
+      end
+      
+      def sortable_element_js(element_id, options = {}) #:nodoc:
+        #convert similar attributes
+        options[:handle] = ".#{options[:handle]}" if options[:handle]
+        if options[:tag] || options[:only]
+          options[:items] = "> "
+          options[:items] << options.delete(:tag) if options[:tag]
+          options[:items] << ".#{options.delete(:only)}" if options[:only]
+        end
+        options[:connectWith] = options.delete(:containment).map {|x| "##{x}"} if options[:containment]
+        options[:containment] = options.delete(:container) if options[:container]
+        options[:dropOnEmpty] = false unless options[:dropOnEmpty]
+        options[:helper] = "'clone'" if options[:ghosting] == true
+        options[:axis] = case options.delete(:constraint)
+          when "vertical", :vertical
+            "y"
+          when "horizontal", :horizontal
+            "x"
+          when false
+            nil
+          when nil
+            "y"
+        end
+        options.delete(:axis) if options[:axis].nil?
+        options.delete(:overlap)
+        options.delete(:ghosting)
+        
+        if options[:onUpdate] || options[:url]
+          if options[:format]
+            options[:with] ||= "#{JQUERY_VAR}(this).sortable('serialize',{key:'#{element_id}[]', expression:#{options[:format]}})"
+            options.delete(:format)
+          else
+            options[:with] ||= "#{JQUERY_VAR}(this).sortable('serialize',{key:'#{element_id}[]'})"
+          end
+          
+          options[:onUpdate] ||= "function(){" + remote_function(options) + "}"
+        end
+        
+        options.delete_if { |key, value| PrototypeHelper::AJAX_OPTIONS.include?(key) }
+        options[:update] = options.delete(:onUpdate) if options[:onUpdate]
+        
+        [:axis, :cancel, :containment, :cursor, :handle, :tolerance, :items, :placeholder].each do |option|
+          options[option] = "'#{options[option]}'" if options[option]
+        end
+        
+        options[:connectWith] = array_or_string_for_javascript(options[:connectWith]) if options[:connectWith]
+        
+        %(#{JQUERY_VAR}('#{jquery_id(element_id)}').sortable(#{options_for_javascript(options)});)
+      end
+      
+      def draggable_element_js(element_id, options = {})
+        %(#{JQUERY_VAR}("#{jquery_id(element_id)}").draggable(#{options_for_javascript(options)});)
+      end
+      
+      def drop_receiving_element_js(element_id, options = {})
+        #convert similar options
+        options[:hoverClass] = options.delete(:hoverclass) if options[:hoverclass]
+        options[:drop] = options.delete(:onDrop) if options[:onDrop]
+        
+        if options[:drop] || options[:url]
+          options[:with] ||= "'id=' + encodeURIComponent(#{JQUERY_VAR}(ui.draggable).attr('id'))"
+          options[:drop] ||= "function(ev, ui){" + remote_function(options) + "}"
+        end
+        
+        options.delete_if { |key, value| PrototypeHelper::AJAX_OPTIONS.include?(key) }
+
+        options[:accept] = array_or_string_for_javascript(options[:accept]) if options[:accept]    
+        [:activeClass, :hoverClass, :tolerance].each do |option|
+          options[option] = "'#{options[option]}'" if options[option]
+        end
+        
+        %(#{JQUERY_VAR}('#{jquery_id(element_id)}').droppable(#{options_for_javascript(options)});)
+      end
+      
+    end
+    
+  end
+end