/*
 * Moonlight|3D
 * Copyright (C) 2008 The Moonlight|3D team
 * 
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Created on Jul 18, 2008
 */

package eu.moonlight3d.graph;

import com.trolltech.qt.gui.QBrush;
import com.trolltech.qt.gui.QColor;
import com.trolltech.qt.gui.QGraphicsItem;
import com.trolltech.qt.gui.QGraphicsItemInterface;
import com.trolltech.qt.gui.QGraphicsRectItem;

class NodeItem extends QGraphicsRectItem implements QGraphicsItemInterface {
	private QColor normalColor=QColor.darkBlue;
	private QColor selectedColor=QColor.darkCyan;
	private Node node;
	
	NodeItem(double x1, double y1, double x2, double y2, Node node) {
		super(x1,y1,x2,y2);
		this.node=node;
		setFlag(QGraphicsItem.GraphicsItemFlag.ItemIsMovable, true);
		setFlag(QGraphicsItem.GraphicsItemFlag.ItemIsSelectable,true);
		setBrush(new QBrush(normalColor));
	}
	
	@Override
	public Object itemChange(QGraphicsItem.GraphicsItemChange change, Object value) {
		if(change==QGraphicsItem.GraphicsItemChange.ItemPositionHasChanged) {
			for(Slot slot : node.getSlots()) {
				// update links
				slot.updateLinkEndpoint();
			}
		} else if(change==QGraphicsItem.GraphicsItemChange.ItemSelectedChange) {
			Integer selected=(Integer) value;
			GraphModel graphModel=(GraphModel) scene();
			if(selected==1) {
				// call graph model listeners
				graphModel.handleSelection(node,true);
				setBrush(new QBrush(selectedColor));
			} else {
				// call graph model listeners
				graphModel.handleSelection(node,false);
				setBrush(new QBrush(normalColor));
			}
		}
		return super.itemChange(change,value);
	}

	void setNormalColor(QColor normalColor) {
		if(normalColor==null) {
			this.normalColor=QColor.darkBlue;
		} else {
			this.normalColor=normalColor;
		}
		if(!isSelected()) {
			setBrush(new QBrush(this.normalColor));
		}
	}

	void setSelectedColor(QColor selectedColor) {
		if(selectedColor==null) {
			this.selectedColor=QColor.darkCyan;
		} else {
			this.selectedColor=selectedColor;
		}
		if(isSelected()) {
			setBrush(new QBrush(this.selectedColor));
		}
	}
}