/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.richfaces.renderkit.html;
import java.io.IOException;
import java.io.Writer;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIParameter;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.component.JavaScriptParameter;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.javascript.JSReference;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
import org.ajax4jsf.resource.InternetResource;
import org.richfaces.component.UIContextMenu;
import org.richfaces.renderkit.TemplateEncoderRendererBase;
import org.xml.sax.ContentHandler;
/**
* @author Maksim Kaszynski
*
*/
public class ContextMenuRendererBase extends
TemplateEncoderRendererBase {
private final ContextMenuRendererDelegate delegate =
new ContextMenuRendererDelegate();
private final InternetResource[] ownScripts = {
getResource("/org/richfaces/renderkit/html/scripts/json/json-dom.js"),
getResource("/org/richfaces/renderkit/html/scripts/utils.js"),
getResource("/org/richfaces/renderkit/html/scripts/context-menu.js")
};
private final InternetResource[] scripts;
public ContextMenuRendererBase() {
InternetResource[] delegateScripts = delegate.getScripts();
scripts = new InternetResource[delegateScripts.length + ownScripts.length];
System.arraycopy(delegateScripts, 0, scripts, 0, delegateScripts.length);
System.arraycopy(ownScripts, 0, scripts, delegateScripts.length, ownScripts.length);
}
protected InternetResource[] getScripts() {
return scripts;
}
protected InternetResource[] getStyles() {
return delegate.getStyles();
}
protected Class getComponentClass() {
return delegate.getComponentClass();
}
protected void doEncodeBegin(ResponseWriter writer, FacesContext context,
UIComponent component) throws IOException {
writer.startElement(HTML.DIV_ELEM, component);
writer.writeAttribute(HTML.id_ATTRIBUTE, component.getClientId(context), "id");
}
public void renderChildren(FacesContext context, UIComponent component)
throws IOException {
delegate.encodeChildren(context, component);
}
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException {
UIContextMenu menu = (UIContextMenu) component;
ResponseWriter writer = context.getResponseWriter();
String event = menu.getEvent();
if (event == null) {
throw new FacesException("Attribute 'event' is not set for component " + component.getClientId(context));
}
writer.startElement("script", component);
writer.writeText("new Richfaces.ContextMenu('", null);
writer.writeText(component.getClientId(context), null);
writer.writeText("', ", null);
writer.writeText(menu.getShowDelay() + ", ", null);
writeScriptBody(context, component, true);
writer.writeText(")", null);
writer.writeText(getClientAttachmentOptions(context, menu), null);
writer.writeText(";", null);
if (menu.isDisableDefaultMenu()) {
writer.writeText("Richfaces.disableDefaultHandler('", null);
writer.writeText(event, null);
writer.writeText("');", null);
}
writer.endElement("script");
}
private String getClientAttachmentOptions(FacesContext context, UIContextMenu contextMenu) {
String result = "";
if (contextMenu.isAttached()) {
JSFunction function = new JSFunction(".attachToParent");
UIComponent parent = contextMenu.getParent();
String parentId = parent.getClientId(context);
function.addParameter(parentId);
String event = contextMenu.getEvent();
function.addParameter(event);
Map params = new LinkedHashMap();
List children = contextMenu.getChildren();
for (Iterator iterator = children.iterator(); iterator.hasNext();) {
UIComponent kid = (UIComponent) iterator.next();
if (kid instanceof UIParameter) {
UIParameter parameter = (UIParameter) kid;
String name = parameter.getName();
Object value = parameter.getValue();
if (parameter instanceof JavaScriptParameter &&
((JavaScriptParameter) parameter).isNoEscape()) {
value = new JSReference(String.valueOf(value));
}
params.put(name, value);
}
}
function.addParameter(params);
result = function.toScript();
}
return result;
}
protected void doEncodeEnd(ResponseWriter writer, FacesContext context,
UIComponent component) throws IOException {
writer.endElement(HTML.DIV_ELEM);
}
protected ContentHandler createContentHandler(Writer writer) {
return new ContextMenuContentHandler(writer, "Richfaces.evalMacro(\"", "\", context)");
}
}