001/*
002 *  Copyright 2012 GWT-Bootstrap
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package com.github.gwtbootstrap.client.ui.resources;
017
018import com.google.gwt.dom.client.Document;
019import com.google.gwt.dom.client.HeadElement;
020import com.google.gwt.dom.client.ScriptElement;
021
022/**
023 * Methods to inject JavaScript code into the document header.
024 * 
025 * @since 2.0.4.0
026 * 
027 * @author Carlos Alexandro Becker
028 */
029public class JavaScriptInjector extends AbstractInjector {
030
031        /**
032         * Injects the JavaScript code into a
033         * {@code <script type="text/javascript">...</script>} element in the
034         * document header.
035         * 
036         * @param javascript
037         *            the JavaScript code
038         */
039        public static void inject(String javascript) {
040                HeadElement head = getHead();
041                ScriptElement element = createScriptElement();
042                element.setText(javascript);
043                head.appendChild(element);
044        }
045
046        private static ScriptElement createScriptElement() {
047                ScriptElement script = Document.get().createScriptElement();
048                script.setAttribute("type", "text/javascript");
049        script.setAttribute("charset", "UTF-8");
050                return script;
051        }
052
053}