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package com.sun.faces.facelets.tag.ui;
import com.sun.faces.facelets.util.DevTools;
import com.sun.faces.facelets.util.FastWriter;
import javax.faces.component.UIComponentBase;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* @author Jacob Hookom
*/
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.setRendererType(null);
}
public String getFamily() {
return COMPONENT_FAMILY;
}
public List getChildren() {
return new ArrayList() {
public boolean add(Object o) {
throw new IllegalStateException(" does not support children");
}
public void add(int index, Object o) {
throw new IllegalStateException(" does not support children");
}
};
}
public void encodeBegin(FacesContext facesContext) throws IOException {
if (isRendered()) {
pushComponentToEL(facesContext, this);
String actionId = facesContext.getApplication().getViewHandler().getActionURL(facesContext, facesContext.getViewRoot().getViewId());
StringBuffer sb = new StringBuffer(512);
sb.append("//\n");
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement("span", this);
writer.writeAttribute("id", getClientId(facesContext), "id");
writer.startElement("script", this);
writer.writeAttribute("language", "javascript", "language");
writer.writeAttribute("type", "text/javascript", "type");
writer.writeText(sb.toString(), this, null);
writer.endElement("script");
writer.endElement("span");
}
}
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(Map.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() : "";
}
}