/*--------------------------------------------------------------------------
    *  Copyright 2007 utgenome.org
    *
    *  Licensed under the Apache License, Version 2.0 (the "License");
    *  you may not use this file except in compliance with the License.
    *  You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *--------------------------------------------------------------------------*/
  //--------------------------------------
  // GenomeBrowser Project
  //
  // WindowControlTrack.java
  // Since: Jun 19, 2007
  //
  // $URL$ 
  // $Author$
  //--------------------------------------
  package org.utgenome.gwt.utgb.client.track.lib;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  
  import org.utgenome.gwt.utgb.client.track.Track;
  import org.utgenome.gwt.utgb.client.track.TrackBase;
  import org.utgenome.gwt.utgb.client.track.TrackFrame;
  import org.utgenome.gwt.utgb.client.track.TrackGroup;
  import org.utgenome.gwt.utgb.client.ui.FormLabel;
  
  import com.google.gwt.core.client.GWT;
  import com.google.gwt.event.dom.client.ClickEvent;
  import com.google.gwt.event.dom.client.ClickHandler;
  import com.google.gwt.event.dom.client.KeyCodes;
  import com.google.gwt.event.dom.client.KeyPressEvent;
  import com.google.gwt.event.dom.client.KeyPressHandler;
  import com.google.gwt.user.client.ui.Button;
  import com.google.gwt.user.client.ui.HorizontalPanel;
  import com.google.gwt.user.client.ui.TextBox;
  import com.google.gwt.user.client.ui.Widget;
  
  /**
   * Track window control buttons
   * 
   * @author leo
   * 
   */
  public class WindowControlTrack extends TrackBase {
  
  	public static TrackFactory factory() {
  		return new TrackFactory() {
  			public Track newInstance() {
  				return new WindowControlTrack();
  			}
  		};
  	}
  
  	private HorizontalPanel _panel = new HorizontalPanel();
  	private Button _hideAndShowButton = new Button("minimize tracks");
  	private Button _packAndUnPackButton = new Button("pack tracks");
  	private Button _closeAllButton = new Button("close tracks");
  	private TextBox _windowSizeInput = new TextBox();
  	private TrackGroup _rootTrackGroup;
  	private final Track _self = this;
  
  	public WindowControlTrack() {
  		super("Window Controller");
  
  		_hideAndShowButton.addClickHandler(new ClickHandler() {
  			private boolean _minimized = false;
  
  			public void onClick(ClickEvent e) {
  				_rootTrackGroup.setResizeNotification(false);
  				if (!_minimized) {
  					for (Track track : getTrackGroup().getAllTrackList()) {
  						if (track.equals(_self))
  							continue;
  						track.getFrame().minimize();
  					}
  					_hideAndShowButton.setText("open tracks");
  				}
  				else {
  					for (Track track : getTrackGroup().getAllTrackList()) {
  						if (track.equals(_self))
  							continue;
  						track.getFrame().open();
  					}
  					_hideAndShowButton.setText("minimize tracks");
  				}
  				_rootTrackGroup.setResizeNotification(true);
  				_rootTrackGroup.notifyResize();
  
  				_minimized = !_minimized;
  			}
 		});
 
 		_packAndUnPackButton.addClickHandler(new ClickHandler() {
 			private boolean _packed = false;
 
 			public void onClick(ClickEvent e) {
 				_rootTrackGroup.setResizeNotification(false);
 				if (!_packed) {
 					for (Track track : getTrackGroup().getAllTrackList()) {
 						if (track.equals(_self))
 							continue;
 						track.getFrame().pack();
 					}
 					_packAndUnPackButton.setText("unpack tracks");
 				}
 				else {
 					for (Track track : getTrackGroup().getAllTrackList()) {
 						if (track.equals(_self))
 							continue;
 						track.getFrame().unpack();
 					}
 					_packAndUnPackButton.setText("pack tracks");
 				}
 				_rootTrackGroup.setResizeNotification(true);
 				_rootTrackGroup.notifyResize();
 				_packed = !_packed;
 			}
 		});
 
 		_closeAllButton.addClickHandler(new ClickHandler() {
 			public void onClick(ClickEvent e) {
 				_rootTrackGroup.setResizeNotification(false);
 
 				// create a list of tracks to be closed
 				ArrayList<Track> closeTarget = new ArrayList<Track>();
 				for (Track track : getTrackGroup().getAllTrackList()) {
 					closeTarget.add(track);
 				}
 
 				// close tracks
 				TrackGroup trackGroup = getTrackGroup();
 				for (Iterator<Track> it = closeTarget.iterator(); it.hasNext();) {
 					Track track = it.next();
 					trackGroup.removeTrack(track);
 				}
 				_rootTrackGroup.setResizeNotification(true);
 				_rootTrackGroup.notifyResize();
 			}
 		});
 
 		_windowSizeInput.setMaxLength(4);
 		_windowSizeInput.addKeyPressHandler(new KeyPressHandler() {
 			public void onKeyPress(KeyPressEvent e) {
 				if (e.getCharCode() == KeyCodes.KEY_ENTER) {
 					try {
 						int windowSize = Integer.parseInt(_windowSizeInput.getText());
 						if (windowSize >= 500) {
 							getTrackGroup().setTrackWindowWidth(windowSize);
 						}
 					}
 					catch (NumberFormatException ex) {
 						GWT.log(_windowSizeInput.getText() + " is not a integer", ex);
 					}
 				}
 			}
 
 		});
 
 		_panel.add(_hideAndShowButton);
 		_panel.add(_packAndUnPackButton);
 		_panel.add(_closeAllButton);
 		_panel.add(new FormLabel("window size (>= 500): "));
 		_panel.add(_windowSizeInput);
 	}
 
 	public Widget getWidget() {
 		return _panel;
 	}
 
 	public void setUp(TrackFrame trackFrame, TrackGroup group) {
 		trackFrame.pack();
 		trackFrame.disablePack();
 
 		_rootTrackGroup = group.getRootTrackGroup();
 	}
 
 }