/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.g2d.elementclass.slider;

import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;

import org.simantics.g2d.diagram.IDiagram;
import org.simantics.g2d.element.ElementClass;
import org.simantics.g2d.element.ElementUtils;
import org.simantics.g2d.element.IElement;
import org.simantics.g2d.element.SceneGraphNodeKey;
import org.simantics.g2d.element.handler.LifeCycle;
import org.simantics.g2d.element.handler.SceneGraph;
import org.simantics.g2d.element.handler.Stateful;
import org.simantics.g2d.element.handler.impl.DefaultTransform;
import org.simantics.g2d.element.handler.impl.Resizeable;
import org.simantics.scenegraph.Node;
import org.simantics.scenegraph.g2d.G2DParentNode;
import org.simantics.scenegraph.g2d.nodes.ShapeNode;
import org.simantics.utils.datastructures.hints.IHintContext.Key;

/**
 * @author Toni Kalajainen
 */
public class SliderClass {

	static final SliderInit INITIAL_VALUES = new SliderInit();

	public static final NarrowTrackPaint NARROW_TRACK = new NarrowTrackPaint(); 
	public static final WideTrackPaint WIDE_TRACK = new WideTrackPaint(); 
		
	public static final ElementClass SLIDER = 
		ElementClass.compile(
				DefaultTransform.INSTANCE,
			new Resizeable(new Rectangle2D.Double(0,0,100, 15), new Rectangle2D.Double(0,0,20, 8), null, null),
				NARROW_TRACK,
				SliderHandle.INSTANCE,
				INITIAL_VALUES,
				Stateful.ENABLED_BY_DEFAULT
		);	
	public static final ElementClass SLIDER2 = 
		ElementClass.compile(
				DefaultTransform.INSTANCE,
			new Resizeable(new Rectangle2D.Double(0,0,100, 15), new Rectangle2D.Double(0,0,20, 8), null, null),
				WIDE_TRACK,
				SliderHandle.INSTANCE,
				INITIAL_VALUES,
				Stateful.ENABLED_BY_DEFAULT				
		);	

	static class SliderInit implements LifeCycle {
        private static final long serialVersionUID = -5228742711389712263L;
        @Override
		public void onElementCreated(IElement e) {
			e.setHint(SliderHandle.KEY_SLIDER_COLOR_PROFILE, SliderColorProfile.DEFAULT);
			e.setHint(SliderHandle.KEY_SLIDER_POSITION, 1.0);
			e.setHint(SliderHandle.KEY_SLIDER_MIN_VALUE, 0.0);
			e.setHint(SliderHandle.KEY_SLIDER_MAX_VALUE, 3.0);			
		}
		@Override
		public void onElementActivated(IDiagram d, IElement e) {}
		@Override
		public void onElementDestroyed(IElement e) {}
		@Override
		public void onElementDeactivated(IDiagram d, IElement e) {}		
	}
	
	static class NarrowTrackPaint implements SceneGraph {
        private static final long serialVersionUID = -598729166071503815L;
        public static final Key SG_NODE = new SceneGraphNodeKey(Node.class, "SUB_SG_NODE");
	    
		@Override
		public void cleanup(IElement e) {
	       Node node = e.removeHint(SG_NODE);
	       if (node != null)
	           node.remove();
		}

		@Override
		public void init(IElement e, G2DParentNode parent) {
			G2DParentNode node = (G2DParentNode) e.getHint(SG_NODE);
			if (node == null) {
				node = parent.addNode(G2DParentNode.class);
	           	e.setHint(SG_NODE, node);
			}
			
			SliderColorProfile colors = e.getHint(SliderHandle.KEY_SLIDER_COLOR_PROFILE);
			
			Rectangle2D rect = ElementUtils.getElementBounds(e);
			double height = rect.getHeight() / 4;
			double width = rect.getWidth();
			Rectangle2D r = new Rectangle2D.Double(0, height, width, height*2);
			
			ShapeNode track1 = node.getOrCreateNode("track1", ShapeNode.class);
			ShapeNode track2 = node.getOrCreateNode("track2", ShapeNode.class);
			ShapeNode track2b = node.getOrCreateNode("track2b", ShapeNode.class);
			ShapeNode track3 = node.getOrCreateNode("track3", ShapeNode.class);

			track3.setColor(colors.TRACK3);
			track3.setFill(true);
			track3.setShape(r);
			track3.setZIndex(1);
			
			track1.setColor(colors.TRACK1);
			track1.setShape(r);
			track1.setZIndex(2);
			
			track2.setColor(colors.TRACK2);
			track2.setShape(new Line2D.Double(1, height+1, 1, height*3-1));
			track2.setZIndex(3);
			
			track2b.setColor(colors.TRACK2);
			track2b.setShape(new Line2D.Double(1, height+1, width-1, height+1));
			track2b.setZIndex(4);
		}
	}
	
	static class WideTrackPaint implements SceneGraph {
        private static final long serialVersionUID = -6644140765437819526L;
        public static final Key SG_NODE = new SceneGraphNodeKey(Node.class, "SUB_SG_NODE");

		@Override
		public void cleanup(IElement e) {
	       Node node = e.removeHint(SG_NODE);
	       if (node != null)
	           node.remove();
		}

		@Override
		public void init(IElement e, G2DParentNode parent) {
			G2DParentNode node = (G2DParentNode) e.getHint(SG_NODE);
			if (node == null) {
				node = parent.addNode(G2DParentNode.class);
	           	e.setHint(SG_NODE, node);
			}
			
			SliderColorProfile colors = e.getHint(SliderHandle.KEY_SLIDER_COLOR_PROFILE);
			Rectangle2D rect = ElementUtils.getElementBounds(e);
			
			double height = rect.getHeight();
			double width = rect.getWidth();
			Rectangle2D r = new Rectangle2D.Double(0, 0, width, height);
			
			ShapeNode track1 = node.getOrCreateNode("track1", ShapeNode.class);
			ShapeNode track2 = node.getOrCreateNode("track2", ShapeNode.class);
			ShapeNode track2b = node.getOrCreateNode("track2b", ShapeNode.class);
			ShapeNode track3 = node.getOrCreateNode("track3", ShapeNode.class);

			track3.setColor(colors.TRACK3);
			track3.setFill(true);
			track3.setShape(r);
			track3.setZIndex(1);
			
			track1.setColor(colors.TRACK1);
			track1.setShape(r);
			track1.setZIndex(2);
			
			track2.setColor(colors.TRACK2);
			track2.setShape(new Line2D.Double(1, 1, 1, height-1));
			track2.setZIndex(3);
			
			track2b.setColor(colors.TRACK2);
			track2b.setShape(new Line2D.Double(1, height-1, width-1, height-1));
			track2b.setZIndex(4);
		}
	}	
	
}