📄 embeddedportletheaderresponse.java
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/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.wicket.protocol.http.portlet;import java.util.Arrays;import java.util.List;import org.apache.wicket.RequestContext;import org.apache.wicket.Response;import org.apache.wicket.markup.html.internal.HeaderResponse;import org.apache.wicket.response.StringResponse;/** * @author Ate Douma */public class EmbeddedPortletHeaderResponse extends HeaderResponse{ private Response realResponse; private StringResponse bufferedResponse; public EmbeddedPortletHeaderResponse(Response realResponse) { this.realResponse = realResponse; bufferedResponse = new StringResponse(); } public void renderCSSReference(String url, String media) { if (!isClosed()) { List token = Arrays.asList(new Object[] { "css", url, media }); if (wasRendered(token) == false) { getResponse().write("<script type=\"text/javascript\">"); getResponse().write("var elem=document.createElement(\"link\");"); getResponse().write("elem.setAttribute(\"rel\",\"stylesheet\");"); getResponse().write("elem.setAttribute(\"type\",\"text/css\");"); getResponse().write("elem.setAttribute(\"href\",\"" + url + "\");"); if (media != null) { getResponse().write("elem.setAttribute(\"media\",\"" + media + "\");"); } getResponse() .write("document.getElementsByTagName(\"head\")[0].appendChild(elem);"); getResponse().println("</script>"); markRendered(token); } } } /** * @see org.apache.wicket.markup.html.internal.HeaderResponse#close() */ public void close() { super.close(); // Automatically add <head> if necessary CharSequence output = bufferedResponse.getBuffer(); if (output.length() > 0) { if (output.charAt(0) == '\r') { for (int i = 2; i < output.length(); i += 2) { char ch = output.charAt(i); if (ch != '\r') { output = output.subSequence(i - 2, output.length()); break; } } } else if (output.charAt(0) == '\n') { for (int i = 1; i < output.length(); i++) { char ch = output.charAt(i); if (ch != '\n') { output = output.subSequence(i - 1, output.length()); break; } } } } if (output.length() > 0) { realResponse.write("<span id=\"" + RequestContext.get().getNamespace() + "_embedded_head\" style=\"display:none\">"); realResponse.write(output); realResponse.write("</span>"); } bufferedResponse.reset(); } /** * @see org.apache.wicket.markup.html.internal.HeaderResponse#getRealResponse() */ protected Response getRealResponse() { return bufferedResponse; }}⌨️ 快捷键说明
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