/*
 * TouchGraph LLC. Apache-Style Software License
 *
 *
 * Copyright (c) 2001-2002 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                                        
  * @author   Murray Altheim (abstracted GLPanel to TGScrollPane interface)
  * @version  1.21  $Id: GLNavigateUI.java,v 1.1.1.1 2007/01/07 07:58:19 andrew Exp $
  */
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.getLocalityScroll();
        hvDragUI = glPanel.getHVScroll().getHVDragUI();
        rotateDragUI = glPanel.getRotateScroll().getRotateDragUI();
        //hvRotateDragUI = new HVRotateDragUI(tgPanel, 
        //        glPanel.getHVScroll(), glPanel.getRotateScroll());
        hvScrollToCenterUI = glPanel.getHVScroll().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) {
        	if (e.isPopupTrigger()) {
            	triggerPopup(e);
            }
            else {
            	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);
                        try {
                            tgPanel.setLocale(mouseOverN, localityScroll.getLocalityRadius());                        
                        }
                        catch (TGException ex) {
                           System.out.println("Error setting locale");
                            ex.printStackTrace();
                        }
                        //hvScrollToCenterUI.activate(e);                        
                }
            }    
        }    
        
        public void mouseReleased(MouseEvent e) {
            if (e.isPopupTrigger()) {
            	triggerPopup(e);
            }
        }    

		private void triggerPopup(MouseEvent e) {
    		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("Collapse Node");
        ActionListener collapseAction = new ActionListener() {
                public void actionPerformed(ActionEvent e) {                    
                    if(popupNode!=null) {
                        tgPanel.collapseNode(popupNode );
                    }
                }
            };
            
        menuItem.addActionListener(collapseAction);
        nodePopup.add(menuItem);

        menuItem = new JMenuItem("Hide Node");
        ActionListener hideAction = new ActionListener() {
                public void actionPerformed(ActionEvent e) {                    
                    if(popupNode!=null) {
                        tgPanel.hideNode(popupNode );
                    }
                }
            };
            
        menuItem.addActionListener(hideAction);
        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
