/**
* 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 static org.ajax4jsf.renderkit.RendererUtils.HTML.SCRIPT_ELEM;
import static org.ajax4jsf.renderkit.RendererUtils.HTML.INPUT_ELEM;
import static org.ajax4jsf.renderkit.RendererUtils.HTML.NAME_ATTRIBUTE;
import static org.ajax4jsf.renderkit.RendererUtils.HTML.id_ATTRIBUTE;
import static org.richfaces.component.Mode.AJAX;
import static org.richfaces.component.Mode.CLIENT;
import static org.richfaces.component.Mode.SERVER;
import java.io.IOException;
import java.util.Map;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.component.UIDataAdaptor;
import org.ajax4jsf.context.AjaxContext;
import org.ajax4jsf.javascript.AjaxScript;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.javascript.JSReference;
import org.ajax4jsf.javascript.PrototypeScript;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
import org.ajax4jsf.renderkit.HeaderResourcesRendererBase;
import org.ajax4jsf.resource.InternetResource;
import org.richfaces.component.Mode;
import org.richfaces.component.UIDataTable;
import org.richfaces.component.UISortableControl;
import org.richfaces.event.sort.SortEvent2;
/**
* @author Maksim Kaszynski
*
*/
public class SortControlRenderer extends HeaderResourcesRendererBase{
interface RendererCommand {
void encodeMarkup(ResponseWriter writer, FacesContext context, UISortableControl control) throws IOException;
}
private final static InternetResource[] scripts = {
new AjaxScript(),
new PrototypeScript()
};
private RendererCommand[] commands = new RendererCommand[Mode.values().length];
public SortControlRenderer() {
commands[AJAX.ordinal()] = new RendererCommand() {
public void encodeMarkup(ResponseWriter writer, FacesContext context,
UISortableControl control) throws IOException {
JSFunction constructor = new JSFunction("new RichFaces.SortControl.Ajax");
JSFunction ajaxFunction = AjaxRendererUtils.buildAjaxFunction(control, context);
constructor.addParameter(control.getClientId(context));
constructor.addParameter(ajaxFunction);
writeScript(context, control, constructor);
}
};
commands[CLIENT.ordinal()] = new RendererCommand() {
public void encodeMarkup(ResponseWriter writer, FacesContext context,
UISortableControl control) throws IOException {
UIDataAdaptor table = control.getTable();
String sortBy = null;
ValueExpression sortExpression = control.getSortExpression();
if (sortExpression != null) {
sortBy = sortExpression.getExpressionString();
}
JSFunction function = new JSFunction("new RichFaces.SortControl");
function.addParameter(control.getClientId(context));
function.addParameter(table.getClientId(context));
function.addParameter(sortBy == null ? JSReference.NULL: new JSReference(sortBy));
function.addParameter(control.getParent().getClientId(context));
writeScript(context, control, function);
}
};
commands[SERVER.ordinal()] = new RendererCommand() {
public void encodeMarkup(ResponseWriter writer, FacesContext context,
UISortableControl control) throws IOException {
JSFunction constructor = new JSFunction("new RichFaces.SortControl.Server");
constructor.addParameter(control.getClientId(context));
writeScript(context, control, constructor);
writer.startElement(INPUT_ELEM, control);
writer.writeAttribute(NAME_ATTRIBUTE, control.getClientId(context), "name");
writer.writeAttribute(id_ATTRIBUTE, control.getClientId(context) + "s", "name");
writer.endElement(INPUT_ELEM);
}
};
}
private void writeScript(FacesContext context, UIComponent component, Object script)
throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement(SCRIPT_ELEM, component);
writer.writeAttribute(id_ATTRIBUTE, component.getClientId(context), "id");
writer.writeText(script, null);
writer.endElement(SCRIPT_ELEM);
}
@Override
protected Class<? extends UIComponent> getComponentClass() {
return UISortableControl.class;
}
@Override
protected InternetResource[] getScripts() {
return scripts;
}
@Override
protected void doDecode(FacesContext context, UIComponent component) {
UISortableControl control = (UISortableControl) component;
String clientId = control.getClientId(context);
ExternalContext externalContext = context.getExternalContext();
Map<String, String> parameterMap = externalContext.getRequestParameterMap();
String string = parameterMap.get(clientId);
if (string != null) {
UIDataTable table = control.getTable();
new SortEvent2(table, control.getSortExpression());
AjaxContext ajaxContext = AjaxContext.getCurrentInstance();
//TODO: AjaxEvent?
if (ajaxContext.isAjaxRequest()) {
ajaxContext.addComponentToAjaxRender(table);
}
}
}
@Override
public boolean getRendersChildren() {
return false;
}
@Override
protected void doEncodeEnd(ResponseWriter writer, FacesContext context,
UIComponent component) throws IOException {
UISortableControl control = (UISortableControl) component;
Mode mode = control.getMode();
if (mode == null) {
mode = SERVER;
}
RendererCommand rendererCommand = commands[mode.ordinal()];
if (rendererCommand != null) {
rendererCommand.encodeMarkup(writer, context, control);
}
}
}