| /* |
| * 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 wicket.extensions.explorerpngfix; |
| |
| import wicket.RequestCycle; |
| import wicket.ResourceReference; |
| import wicket.behavior.AbstractBehavior; |
| import wicket.markup.html.IHeaderContributor; |
| import wicket.markup.html.IHeaderResponse; |
| import wicket.protocol.http.ClientProperties; |
| import wicket.protocol.http.WebRequestCycle; |
| import wicket.protocol.http.request.WebClientInfo; |
| |
| /** |
| * A behavior that adds the necessary javascript to the page to make ie < 7.0 |
| * properly work with png transparency. |
| * |
| * @author ivaynberg |
| * |
| */ |
| public class ExplorerPngFix extends AbstractBehavior implements IHeaderContributor |
| { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final ResourceReference ref = new ResourceReference(ExplorerPngFix.class, |
| "explorerPngFix.js"); |
| |
| /** |
| * @see wicket.markup.html.IHeaderContributor#renderHead(wicket.markup.html.IHeaderResponse) |
| */ |
| public void renderHead(IHeaderResponse response) |
| { |
| if (response.wasRendered(ref) == false) |
| { |
| WebClientInfo info = ((WebRequestCycle)RequestCycle.get()).getClientInfo(); |
| ClientProperties properties = info.getProperties(); |
| |
| if (properties.isBrowserInternetExplorer() && properties.getBrowserVersionMajor() < 7) |
| { |
| response.getResponse().write("<!--[if lt IE 7.]> <script defer type=\"text/javascript\" src=\""); |
| response.getResponse().write(RequestCycle.get().urlFor(ref)); |
| response.getResponse().write("\"></script> <![endif]-->"); |
| |
| response.markRendered(ref); |
| } |
| } |
| } |
| } |