/**
* License Agreement.
*
* JBoss RichFaces - Ajax4jsf Component Library
*
* 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;
import java.util.HashMap;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import org.ajax4jsf.javascript.DnDScript;
import org.ajax4jsf.javascript.PrototypeScript;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
import org.ajax4jsf.renderkit.RendererUtils;
import org.richfaces.component.Draggable;
import org.richfaces.component.Dropzone;
import org.richfaces.event.DnDEvent;
import org.richfaces.event.DragEvent;
import org.richfaces.renderkit.DnDEventsExchangeMailer.EventCallback;
/**
* @author shura
*
*/
public class DraggableRendererContributor implements RendererContributor {
public final static String DRAG_SOURCE_ID = "dragSourceId";
private static final EventCallback dragEventsCallback = new EventCallback() {
void processEvent(DnDEvent dndEvent, UIComponent source,
FacesContext facesContext, Object type, Object value) {
DragEvent dragEvent = (DragEvent) dndEvent;
dragEvent.setDropTarget((Dropzone) source);
dragEvent.setDropValue(value);
dragEvent.setAcceptedTypes(type);
}
};
private static DraggableRendererContributor instance;
private DraggableRendererContributor() {
super();
}
public static synchronized RendererContributor getInstance() {
if (instance == null) {
instance = new DraggableRendererContributor();
}
return instance;
}
public class DraggableOptions extends ScriptOptions {
public DraggableOptions(Draggable draggable) {
//TODO by nick - change this cast
super((UIComponent) draggable);
addOption("dragType", draggable.getDragType());
String grab = draggable.getGrabCursors();
if (!grab.equals("")) {
addOption("grab", grab);
}
String grabbing = draggable.getGrabbingCursors();
if (!grabbing.equals("")) {
addOption("grabbing",grabbing);
}
addEventHandler("ondragstart", draggable.getOndragstart());
addEventHandler("ondragend", draggable.getOndragend());
addEventHandler("ondropover",draggable.getOndropover());
addEventHandler("ondropout",draggable.getOndropout());
}
}
public void decode(FacesContext context, UIComponent component, CompositeRenderer compositeRenderer) {
DnDEventsExchangeMailer eventsExchanger = DnDEventsExchangeMailer.getInstance(context);
String clientId = component.getClientId(context);
Map paramMap = context.getExternalContext().getRequestParameterMap();
if(clientId.equals(paramMap.get(DRAG_SOURCE_ID))){
String dropTargetId = (String) paramMap.get(DropzoneRendererContributor.DROP_TARGET_ID);
if (compositeRenderer != null) {
compositeRenderer.contributorDecodeCallback(component, context, this, dropTargetId);
}
Draggable draggable = (Draggable) component;
eventsExchanger.mailEvent(dropTargetId, component,
context, new DragEvent(component), dragEventsCallback, draggable.getDragType(),
draggable.getDragValue(), true);
}
}
public String[] getStyleDependencies() {
return new String[] {
"/org/richfaces/renderkit/html/css/dragIndicator.xcss"
};
}
public String[] getScriptDependencies() {
return new String[] {
PrototypeScript.class.getName(),
"/org/richfaces/renderkit/html/scripts/json/json-mini.js",
DnDScript.class.getName(),
"/org/richfaces/renderkit/html/scripts/utils.js",
"/org/richfaces/renderkit/html/scripts/json/json-dom.js",
"/org/richfaces/renderkit/html/scripts/dnd/dnd-common.js",
"/org/richfaces/renderkit/html/scripts/dnd/dnd-draggable.js"
};
}
public ScriptOptions buildOptions(FacesContext context, UIComponent component) {
if (component instanceof Draggable) {
Draggable draggable = (Draggable) component;
DraggableOptions options = new DraggableOptions(draggable);
Map eventOptions = AjaxRendererUtils.buildEventOptions(context, component);
Map parameters = (Map) eventOptions.get("parameters");
if (parameters == null) {
parameters = new HashMap();
}
String clientId = component.getClientId(context);
parameters.put(DRAG_SOURCE_ID, clientId);
options.addOption("parameters", parameters);
String indicatorId = draggable.getResolvedDragIndicator(context);
if (indicatorId == null) {
String simpleId = draggable.getDragIndicator();
if (simpleId != null) {
UIComponent indicator = RendererUtils.getInstance().findComponentFor(component, simpleId);
if (indicator != null) {
indicatorId = indicator.getClientId(context);
}
}
}
if (indicatorId != null) {
options.addOption("dragIndicator", indicatorId);
}
return options;
}
return null;
}
public String getScriptContribution(FacesContext context,
UIComponent component) {
// TODO Auto-generated method stub
return null;
}
public Class getAcceptableClass() {
return Draggable.class;
}
}