/*
 * TouchGraph LLC. Apache-Style Software License
 *
 *
 * Copyright (c) 2002 Alexander Shapiro. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by 
 *        TouchGraph LLC (http://www.touchgraph.com/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "TouchGraph" or "TouchGraph LLC" must not be used to endorse 
 *    or promote products derived from this software without prior written 
 *    permission.  For written permission, please contact 
 *    alex@touchgraph.com
 *
 * 5. Products derived from this software may not be called "TouchGraph",
 *    nor may "TouchGraph" appear in their name, without prior written
 *    permission of alex@touchgraph.com.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL TOUCHGRAPH OR ITS CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 */

package com.touchgraph.graphlayout.interaction;

import  com.touchgraph.graphlayout.*;
 
import  java.awt.event.*;
import  javax.swing.*;
import  javax.swing.event.*;

/** GLNavigateUI. User interface for moving around the graph, as opposed
  * to editing.
  *   
  * @author   Alexander Shapiro                                        
  * @version  1.20
  */
public class GLNavigateUI extends TGUserInterface {
	
	GLPanel glPanel;
	TGPanel tgPanel;	
	
	GLNavigateMouseListener ml;
		
	TGAbstractDragUI hvDragUI;
	TGAbstractDragUI rotateDragUI;
	TGAbstractDragUI hvRotateDragUI;
	
	TGAbstractClickUI hvScrollToCenterUI;
	DragNodeUI dragNodeUI;
	LocalityScroll localityScroll;
	JPopupMenu nodePopup;	
	JPopupMenu edgePopup;	
	Node popupNode;
	Edge popupEdge;
	
	public GLNavigateUI(GLPanel glp) {
		glPanel = glp;
		tgPanel = glPanel.getTGPanel();		
		
		localityScroll=glPanel.localityScroll;
		
		hvDragUI = glPanel.hvScroll.getHVDragUI();
		rotateDragUI = glPanel.rotateScroll.getRotateDragUI();
		hvRotateDragUI = new HVRotateDragUI(tgPanel, glPanel.hvScroll, glPanel.rotateScroll);
		
		hvScrollToCenterUI = glPanel.hvScroll.getHVScrollToCenterUI();
		
		dragNodeUI = new DragNodeUI(tgPanel);					
		
		ml = new GLNavigateMouseListener();
		setUpNodePopup();
		setUpEdgePopup();
	}
	
	public void activate() {		
		tgPanel.addMouseListener(ml);
	}
	
	public void deactivate() {
		tgPanel.removeMouseListener(ml);
	}
	
	class GLNavigateMouseListener extends MouseAdapter {
	
		public void mousePressed(MouseEvent e) {
			Node mouseOverN = tgPanel.getMouseOverN();
			
			if (e.getModifiers() == MouseEvent.BUTTON1_MASK) { 
				if (mouseOverN == null) 
					hvDragUI.activate(e);
				else 
					dragNodeUI.activate(e);					
			}
		}

		public void mouseClicked(MouseEvent e) {
			Node mouseOverN = tgPanel.getMouseOverN();
			if (e.getModifiers() == MouseEvent.BUTTON1_MASK) { 
				if ( mouseOverN != null) {						
						tgPanel.setSelect(mouseOverN);
						tgPanel.setLocale(mouseOverN, localityScroll.getRadius());						
						//hvScrollToCenterUI.activate(e);						
				}
			}	
		}	
		
		public void mouseReleased(MouseEvent e) {
       		if (e.isPopupTrigger()) {
       			popupNode = tgPanel.getMouseOverN();
       			popupEdge = tgPanel.getMouseOverE();
       			if (popupNode!=null) {
       				tgPanel.setMaintainMouseOver(true);
    	    		nodePopup.show(e.getComponent(), e.getX(), e.getY());
            	}
            	else if (popupEdge!=null) {
            		tgPanel.setMaintainMouseOver(true);
            		edgePopup.show(e.getComponent(), e.getX(), e.getY());
            	}
            	else {
            		glPanel.glPopup.show(e.getComponent(), e.getX(), e.getY());
            	}
           	}
        }	

	}

	private void setUpNodePopup() {	    
	    nodePopup = new JPopupMenu();
	    JMenuItem menuItem;
		
		menuItem = new JMenuItem("Expand Node");
        ActionListener expandAction = new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
					if(popupNode!=null) {
						tgPanel.expandNode(popupNode);
					}
    			}
			};
			
        menuItem.addActionListener(expandAction);
     	nodePopup.add(menuItem);
     	
     	menuItem = new JMenuItem("Hide Node");
        ActionListener hideAction = new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
					Node select = tgPanel.getSelect();
					if(popupNode!=null) {
						tgPanel.hideNode(popupNode, select);
					}
    			}
			};
			
        menuItem.addActionListener(hideAction);
     	nodePopup.add(menuItem);
   	
     	menuItem = new JMenuItem("Select Node");
        ActionListener selectAction = new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
					if(popupNode!=null) {
						tgPanel.setSelect(popupNode);
					}
    			}
			};
        menuItem.addActionListener(selectAction);
     	nodePopup.add(menuItem);

     	nodePopup.addPopupMenuListener(new PopupMenuListener() {
			public void popupMenuCanceled(PopupMenuEvent e) {}
			public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
				tgPanel.setMaintainMouseOver(false);
				tgPanel.setMouseOverN(null);
				tgPanel.repaint();		
			}
			public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}
		});
		
	}

	private void setUpEdgePopup() {	    
	    edgePopup = new JPopupMenu();
	    JMenuItem menuItem;
		     	
     	menuItem = new JMenuItem("Hide Edge");
        ActionListener hideAction = new ActionListener() {
    			public void actionPerformed(ActionEvent e) {
					if(popupEdge!=null) {
						tgPanel.hideEdge(popupEdge);
					}
    			}
			};
			
        menuItem.addActionListener(hideAction);
     	edgePopup.add(menuItem);		
     	
     	edgePopup.addPopupMenuListener(new PopupMenuListener() {
			public void popupMenuCanceled(PopupMenuEvent e) {}
			public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
				tgPanel.setMaintainMouseOver(false);
				tgPanel.setMouseOverE(null);
				tgPanel.repaint();		
			}
			public void popupMenuWillBecomeVisible(PopupMenuEvent e) {}
		});
	}

} // end com.touchgraph.graphlayout.interaction.GLNavigateUI