TaskDetailView.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.bpm.console.client.task;

import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.Widget;
import com.mvc4g.client.Controller;
import com.mvc4g.client.ViewInterface;
import org.gwt.mosaic.ui.client.Caption;
import org.gwt.mosaic.ui.client.CaptionLayoutPanel;
import org.gwt.mosaic.ui.client.DeckLayoutPanel;
import org.gwt.mosaic.ui.client.layout.BoxLayoutData;
import org.gwt.mosaic.ui.client.layout.MosaicPanel;
import org.jboss.bpm.console.client.LazyPanel;
import org.jboss.bpm.console.client.common.PropertyGrid;
import org.jboss.bpm.console.client.model.TaskRef;

/**
 * @author Heiko.Braun <heiko.braun@jboss.com>
 */
public class TaskDetailView extends CaptionLayoutPanel
    implements ViewInterface, LazyPanel
{
  public final static String ID = TaskDetailView.class.getName();

  private Controller controller;

  private TaskRef currentTask = null;

  private PropertyGrid grid;
  private ParticipantPanel participantPanel;

  private boolean openView;

  private boolean initialzed;

  public TaskDetailView(boolean openView)
  {

    // render
    super("Task details");    

    super.setStyleName("bpm-detail-panel");

    this.openView = openView;

  }

  public boolean isInitialized()
  {
    return initialzed;
  }

  public void initialize()
  {
    if(!this.initialzed)
    {

      grid = new PropertyGrid(
          new String[] {"ID:", "Process:", "Name:", "Assignee:", "Description:"}
      );

      if(openView)
      {
        // properties
        final DeckLayoutPanel deck = new DeckLayoutPanel();
        deck.add(grid);

        // participants
        participantPanel = new ParticipantPanel();
        participantPanel.setController(controller);

        // selection
        final com.google.gwt.user.client.ui.ListBox dropBox = new com.google.gwt.user.client.ui.ListBox(false);
        dropBox.setStyleName("bpm-operation-ui");
        dropBox.addItem("Properties");
        dropBox.addItem("Participants");
        dropBox.addChangeListener(new ChangeListener() {
          public void onChange(Widget sender) {
            deck.showWidget(dropBox.getSelectedIndex());
            deck.layout();
          }
        });

        deck.add(participantPanel);

        this.getHeader().add(dropBox, Caption.CaptionRegion.RIGHT);
        this.add(deck, new BoxLayoutData(BoxLayoutData.FillStyle.BOTH));

        deck.showWidget(dropBox.getSelectedIndex());
      }
      else
      {
        MosaicPanel p = new MosaicPanel();
        p.add(grid);
        this.add(p);
      }

      this.initialzed = true;
    }
  }

  public void setController(Controller controller)
  {
    this.controller = controller;
  }

  public void update(TaskRef task)
  {
    String description = task.getDescription()!=null? task.getDescription():"";

    String[] values = new String[] {
        String.valueOf(task.getId()),
        task.getProcessId(),
        task.getName(),
        task.getAssignee(),
        description
    };

    grid.update(values);

    if(openView && participantPanel !=null)
      participantPanel.update(task);
  }

  public void clearView()
  {
    grid.clear();

    if(openView && participantPanel !=null) // event handling is broken. The change listener fires too early
      participantPanel.clearView();

    currentTask = null;
  }

}