/**
* Licensed 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 com.sun.facelets.tag.ui;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import javax.faces.component.UIComponentBase;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.http.HttpServletResponse;
import com.sun.facelets.util.DevTools;
import com.sun.facelets.util.FastWriter;
/**
* @author Jacob Hookom
* @version $Id: UIDebug.java,v 1.6 2008/07/13 19:01:41 rlubke Exp $
*/
public final class UIDebug extends UIComponentBase {
public final static String COMPONENT_TYPE = "facelets.ui.Debug";
public final static String COMPONENT_FAMILY = "facelets";
private static long nextId = System.currentTimeMillis();
private final static String KEY = "facelets.ui.DebugOutput";
public final static String DEFAULT_HOTKEY = "D";
private String hotkey = DEFAULT_HOTKEY;
public UIDebug() {
super();
this.setTransient(true);
this.setRendered(true);
this.setRendererType(null);
}
public String getFamily() {
return COMPONENT_FAMILY;
}
public List getChildren() {
return new ArrayList() {
public boolean add(Object o) {
throw new IllegalStateException("<ui:debug> does not support children");
}
public void add(int index, Object o) {
throw new IllegalStateException("<ui:debug> does not support children");
}
};
}
public void encodeBegin(FacesContext faces) throws IOException {
String actionId = faces.getApplication().getViewHandler().getActionURL(faces, faces.getViewRoot().getViewId());
StringBuffer sb = new StringBuffer(512);
sb.append("<script language=\"javascript\" type=\"text/javascript\">\n");
sb.append("//<![CDATA[\n");
sb.append("function faceletsDebug(URL) { day = new Date(); id = day.getTime(); eval(\"page\" + id + \" = window.open(URL, '\" + id + \"', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=800,height=600,left = 240,top = 212');\"); };");
sb.append("var faceletsOrigKeyup = document.onkeyup; document.onkeyup = function(e) { if (window.event) e = window.event; if (String.fromCharCode(e.keyCode) == '" + this.getHotkey() + "' & e.shiftKey & e.ctrlKey) faceletsDebug('");
sb.append(actionId);
sb.append('?');
sb.append(KEY);
sb.append('=');
sb.append(writeDebugOutput(faces));
sb.append("'); else if (faceletsOrigKeyup) faceletsOrigKeyup(e); };\n");
sb.append("//]]>\n");
sb.append("</script>\n");
ResponseWriter writer = faces.getResponseWriter();
writer.write(sb.toString());
}
private static String writeDebugOutput(FacesContext faces) throws IOException {
FastWriter fw = new FastWriter();
DevTools.debugHtml(fw, faces);
Map session = faces.getExternalContext().getSessionMap();
Map debugs = (Map) session.get(KEY);
if (debugs == null) {
debugs = new LinkedHashMap() {
protected boolean removeEldestEntry(Entry eldest) {
return (this.size() > 5);
}
};
session.put(KEY, debugs);
}
String id = "" + nextId++;
debugs.put(id, fw.toString());
return id;
}
private static String fetchDebugOutput(FacesContext faces, String id) {
Map session = faces.getExternalContext().getSessionMap();
Map debugs = (Map) session.get(KEY);
if (debugs != null) {
return (String) debugs.get(id);
}
return null;
}
public static boolean debugRequest(FacesContext faces) {
String id = (String) faces.getExternalContext().getRequestParameterMap().get(KEY);
if (id != null) {
Object resp = faces.getExternalContext().getResponse();
if (!faces.getResponseComplete()
&& resp instanceof HttpServletResponse) {
try {
HttpServletResponse httpResp = (HttpServletResponse) resp;
String page = fetchDebugOutput(faces, id);
if (page != null) {
httpResp.setContentType("text/html");
httpResp.getWriter().write(page);
} else {
httpResp.setContentType("text/plain");
httpResp.getWriter().write("No Debug Output Available");
}
httpResp.flushBuffer();
faces.responseComplete();
} catch (IOException e) {
return false;
}
return true;
}
}
return false;
}
public String getHotkey() {
return this.hotkey;
}
public void setHotkey(String hotkey) {
this.hotkey = (hotkey != null) ? hotkey.toUpperCase() : "";
}
}