001    // Copyright 2004, 2005 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    
015    package org.apache.tapestry.contrib.link;
016    
017    import org.apache.hivemind.HiveMind;
018    import org.apache.hivemind.service.BodyBuilder;
019    import org.apache.tapestry.IRequestCycle;
020    import org.apache.tapestry.PageRenderSupport;
021    import org.apache.tapestry.TapestryUtils;
022    import org.apache.tapestry.components.ILinkComponent;
023    import org.apache.tapestry.engine.ILink;
024    import org.apache.tapestry.link.DefaultLinkRenderer;
025    
026    /**
027     * This renderer emits javascript to launch the link in a window.
028     * 
029     * @author David Solis
030     * @since 3.0.1
031     */
032    public class PopupLinkRenderer extends DefaultLinkRenderer
033    {
034    
035        private String _windowName;
036    
037        private String _features;
038    
039        public PopupLinkRenderer()
040        {
041        }
042    
043        /**
044         * Initializes the name and features for javascript window.open function.
045         * 
046         * @param windowName
047         *            the window name
048         * @param features
049         *            the window features
050         */
051        public PopupLinkRenderer(String windowName, String features)
052        {
053            _windowName = windowName;
054            _features = features;
055        }
056    
057        /**
058         * @see DefaultLinkRenderer#constructURL(org.apache.tapestry.engine.ILink, String,
059         *      org.apache.tapestry.IRequestCycle)
060         */
061        protected String constructURL(ILinkComponent component, IRequestCycle cycle)
062        {
063            String anchor = component.getAnchor();
064            ILink link = component.getLink(cycle);
065    
066            String url = link.getURL(anchor, true);
067    
068            PageRenderSupport support = TapestryUtils.getPageRenderSupport(cycle, component);
069    
070            String functionName = support.getUniqueString("popup_window");
071    
072            BodyBuilder builder = new BodyBuilder();
073    
074            builder.addln("function {0}()", functionName);
075            builder.begin();
076            builder.addln(
077                    "var newWindow = window.open({0}, {1}, {2});",
078                    TapestryUtils.enquote(url),
079                    TapestryUtils.enquote(getWindowName()),
080                    TapestryUtils.enquote(getFeatures()));
081            builder.addln("newWindow.focus();");
082            builder.end();
083    
084            support.addBodyScript(builder.toString());
085    
086            return "javascript:" + functionName + "();";
087        }
088    
089        public String getWindowName()
090        {
091            return _windowName;
092        }
093    
094        public void setWindowName(String windowName)
095        {
096            _windowName = windowName;
097        }
098    
099        public String getFeatures()
100        {
101            return _features;
102        }
103    
104        public void setFeatures(String features)
105        {
106            _features = features;
107        }
108    }