Package org.richfaces.component

Source Code of org.richfaces.component.UIDragSupport

/**
* 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.component;

import javax.faces.context.FacesContext;
import javax.faces.el.MethodBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.FacesEvent;
import javax.faces.event.PhaseId;

import org.ajax4jsf.component.AjaxActionComponent;
import org.ajax4jsf.event.AjaxEvent;
import org.richfaces.event.DragEvent;
import org.richfaces.event.DragListener;

/**
* JSF component class
*
*/
public abstract class UIDragSupport extends AjaxActionComponent implements Draggable {
 
  private static final String COMPONENT_TYPE = "org.richfaces.DragSupport";
 
  private static final String COMPONENT_FAMILY = "org.richfaces.DragSupport";

  public void addDragListener(DragListener listener) {
    addFacesListener(listener);
  }

  public void removeDragListener(DragListener listener) {
    removeFacesListener(listener);
  }

  public DragListener[] getDragListeners() {
    return (DragListener[]) getFacesListeners(DragListener.class);
  }

  public void broadcast(FacesEvent event) throws AbortProcessingException {
    super.broadcast(event);
    if (event instanceof DragEvent) {
      DragEvent dragEvent = (DragEvent) event;
      if (dragEvent.isValid()) {
        MethodBinding binding = getDragListener();
        if (binding != null) {
          binding.invoke(getFacesContext(), new Object[] {event});
        }

        new AjaxEvent(this).queue();
        new ActionEvent(this).queue();
      }
    }
  }

  public void queueEvent(FacesEvent event) {
    if (event instanceof DragEvent) {
      if (isImmediate()) {
        event.setPhaseId(PhaseId.APPLY_REQUEST_VALUES);
      } else {
        event.setPhaseId(PhaseId.INVOKE_APPLICATION);
      }
    }
    super.queueEvent(event);
  }
 
  public String getResolvedDragIndicator(FacesContext facesContext) {
    return null;
  }
 
}
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