ParticipantPanel.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.*;
import com.mvc4g.client.Controller;
import com.mvc4g.client.Event;
import com.mvc4g.client.ViewInterface;
import org.gwt.mosaic.ui.client.ScrollLayoutPanel;
import org.gwt.mosaic.ui.client.layout.BoxLayout;
import org.gwt.mosaic.ui.client.layout.BoxLayoutData;
import org.gwt.mosaic.ui.client.layout.MosaicPanel;
import org.jboss.bpm.console.client.model.ParticipantRef;
import org.jboss.bpm.console.client.model.TaskRef;
import org.jboss.bpm.console.client.task.events.AssignEvent;

/**
 * @author Heiko.Braun <heiko.braun@jboss.com>
 */
class ParticipantPanel extends MosaicPanel implements ViewInterface
{

  public final static String ID = ParticipantPanel.class.getName();

  public final static String PARTICIPANTS = "Participants";
  public final static String GROUPS = "Groups";
  public final static String USERS = "Users";

  private Controller controller;

  private Tree tree;
  private Button assignmentBtn;
  private String selection = null;
  private TaskRef currentTask;

  public ParticipantPanel()
  {
    super(new BoxLayout(BoxLayout.Orientation.HORIZONTAL));
    setPadding(5);

    // particpants
    ScrollLayoutPanel treePanel = new ScrollLayoutPanel();

    treePanel.setStyleName("bpm-property-box");

    tree = new Tree();
    treePanel.add(tree);
    this.add(treePanel, new BoxLayoutData(BoxLayoutData.FillStyle.BOTH));

    tree.addTreeListener(
        new TreeListener()
        {
          public void onTreeItemSelected(TreeItem treeItem)
          {
            String name = treeItem.getText();
            if(
                !name.equals(PARTICIPANTS)
                    &! name.equals(GROUPS)
                    &! name.equals(USERS)
                )
            {
              selection = name;
              assignmentBtn.setEnabled(true);
            }
            else
            {
              selection = null;
              assignmentBtn.setEnabled(false);
            }
          }

          public void onTreeItemStateChanged(TreeItem treeItem)
          {

          }
        }
    );

    // operations
    assignmentBtn = new Button(
        "Assign",
        new ClickListener() {

          public void onClick(Widget widget)
          {
            if(selection!=null)
            {
              controller.handleEvent(
                  new Event(AssignTaskAction.ID, new AssignEvent(selection, currentTask))
              );
            }            
          }
        }
    );

    assignmentBtn.setStyleName("bpm-operation-ui");
    assignmentBtn.setEnabled(false);
    add(assignmentBtn);
  }


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

  public void update(TaskRef task)
  {
    currentTask = task;

    tree.clear();
    
    TreeItem root = tree.addItem(PARTICIPANTS);

    // groups
    TreeItem groups = root.addItem(GROUPS);
    for(ParticipantRef gref : task.getParticipantGroups())
    {
      groups.addItem(gref.getIdRef());
    }

    // users
    TreeItem users = root.addItem(USERS);
    for(ParticipantRef uref : task.getParticipantUsers())
    {
      users.addItem(uref.getIdRef());
    }

    root.setState(true); // open users
    
    this.invalidate();
  }

  public void clearView()
  {
    tree.clear();
    currentTask = null;
  }
}