001// Copyright 2012 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry5.internal.services.javascript; 016 017import org.apache.tapestry5.MarkupWriter; 018import org.apache.tapestry5.SymbolConstants; 019import org.apache.tapestry5.dom.Element; 020import org.apache.tapestry5.ioc.annotations.Symbol; 021import org.apache.tapestry5.ioc.services.ThreadLocale; 022import org.apache.tapestry5.services.MarkupRenderer; 023import org.apache.tapestry5.services.MarkupRendererFilter; 024 025/** 026 * Responsible for writing attributes needed to configure the client, into the 027 * HTML element. 028 * 029 * @since 5.4 030 */ 031public class ConfigureHTMLElementFilter implements MarkupRendererFilter 032{ 033 private final ThreadLocale threadLocale; 034 035 private final boolean debugEnabled; 036 037 public ConfigureHTMLElementFilter(ThreadLocale threadLocale, @Symbol(SymbolConstants.PRODUCTION_MODE) boolean productionMode) 038 { 039 this.threadLocale = threadLocale; 040 this.debugEnabled = !productionMode; 041 } 042 043 public void renderMarkup(MarkupWriter writer, MarkupRenderer renderer) 044 { 045 renderer.renderMarkup(writer); 046 047 // After that's done (i.e., pretty much all rendering), touch it up a little. 048 049 Element html = writer.getDocument().find("html"); 050 051 // If it is an HTML document, with a root HTML node, add attributes 052 // to describe locale, and if debug is enabled. 053 if (html != null) 054 { 055 html.attributes("data-locale", threadLocale.getLocale().toString()); 056 057 if (debugEnabled) 058 { 059 html.attributes("data-debug-enabled", "true"); 060 } 061 062 } 063 } 064}