DoWhileNodeGUI.java

/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.apache.airavata.xbaya.ui.graph.system;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Polygon;
import java.awt.Rectangle;
import java.awt.geom.GeneralPath;
import java.util.List;

import org.apache.airavata.workflow.model.graph.Node;
import org.apache.airavata.workflow.model.graph.Port;
import org.apache.airavata.workflow.model.graph.impl.PortImpl;
import org.apache.airavata.workflow.model.graph.system.DoWhileNode;
import org.apache.airavata.xbaya.graph.controller.NodeController;
import org.apache.airavata.xbaya.ui.XBayaGUI;
import org.apache.airavata.xbaya.ui.dialogs.graph.system.DoWhileConfigrationDialog;
import org.apache.airavata.xbaya.ui.graph.PortGUI;
import org.apache.airavata.xbaya.ui.utils.DrawUtils;

public class DoWhileNodeGUI extends ConfigurableNodeGUI {

	private static final String CONFIG_AREA_STRING = "Config";

	private DoWhileNode node;

	private DoWhileConfigrationDialog configurationWindow;

	private Polygon polygon;
	
    private GeneralPath generalPath;

	/**
	 * Constructs a DoWhileNodeGUI.
	 *
	 * @param node
	 */
	public DoWhileNodeGUI(DoWhileNode node) {
		super(node);
		this.node = node;
		setConfigurationText(CONFIG_AREA_STRING);
		this.polygon = new Polygon();
        generalPath = new GeneralPath();
	}

	/**
	 * Shows a configuration window when a user click the configuration area.
	 *
	 * @param engine
	 */
	@Override
	protected void showConfigurationDialog(XBayaGUI xbayaGUI) {
		if (this.configurationWindow == null) {
			this.configurationWindow = new DoWhileConfigrationDialog(this.node, xbayaGUI);
		}
		this.configurationWindow.show();
	}


	/**
	 * @see edu.indiana.extreme.xbaya.graph.system.gui.ConfigurableNodeGUI#calculatePositions(java.awt.Graphics)
	 */
	@Override
	protected void calculatePositions(Graphics g) {
		super.calculatePositions(g);
		calculatePositions();
		setPortPositions();
	}

	/**
	 * @see edu.indiana.extreme.xbaya.graph.gui.NodeGUI#getBounds()
	 */
	@Override
	protected Rectangle getBounds() {
		return this.polygon.getBounds();
	}

	/**
	 * @see edu.indiana.extreme.xbaya.graph.gui.NodeGUI#isIn(java.awt.Point)
	 */
	@Override
	protected boolean isIn(Point point) {
		return this.polygon.contains(point);
	}

	protected GeneralPath getComponentHeaderShape() {
		return DrawUtils.getRoundedShape(createHeader(getPosition()));
	}

	protected String getComponentHeaderText() {
		return node.getName();
	}

	protected Color getComponentHeaderColor() {
		return headColor;
	}

	protected GeneralPath getComponentShape() {
		return generalPath;
	}

	protected Node getNode() {
		return this.node;
	}

	private Polygon createHeader(Point position) {
		Polygon head = new Polygon();
		head.addPoint(position.x, position.y + this.headHeight / 2);
		head.addPoint(position.x, position.y + this.headHeight);
		head.addPoint(position.x + this.dimension.width, position.y + this.headHeight);
		head.addPoint(position.x + this.dimension.width, position.y + this.headHeight / 2);
		head.addPoint(position.x + this.dimension.width / 2, position.y);
		return head;
	}

	/**
	 * Sets up the position of ports
	 */
	@Override
	protected void setPortPositions() {
		List<? extends Port> inputPorts = this.node.getInputPorts();
		for (int i = 0; i < inputPorts.size(); i++) {
			Port port = inputPorts.get(i);
			Point offset = new Point(PortGUI.DATA_PORT_SIZE / 2, this.headHeight + PORT_INITIAL_GAP + PORT_GAP * i);
			NodeController.getGUI(port).setOffset(offset);
		}

		// outputs
		List<? extends Port> outputPorts = this.node.getOutputPorts();
		for (int i = 0; i < outputPorts.size(); i++) {
			Port port = outputPorts.get(i);
			// Use getBounds() instead of this.dimension because subclass might
			// overwrite getBounds() to have different shape.
			Point offset = new Point(this.getBounds().width
					- PortGUI.DATA_PORT_SIZE / 2, this.headHeight
					+ PORT_INITIAL_GAP + PORT_GAP * i);
			NodeController.getGUI(port).setOffset(offset);
		}

		PortImpl controlInPort = this.node.getControlInPort();
		if (controlInPort != null) {
			Point offset = new Point(0, this.headHeight / 2);
			NodeController.getGUI(controlInPort).setOffset(offset);
		}

		// There are two controlOutPorts.
		List<? extends Port> controlOutPorts = this.node.getControlOutPorts();
		Port controlOutPort1 = controlOutPorts.get(0);
		Point offset = new Point(getBounds().width, +this.headHeight / 2);
		NodeController.getGUI(controlOutPort1).setOffset(offset);

		Port controlOutPort2 = controlOutPorts.get(1);
		offset = new Point(this.getBounds().width, getBounds().height - this.headHeight / 2);
		NodeController.getGUI(controlOutPort2).setOffset(offset);
	}

	private void calculatePositions() {
		// Avoid instantiating a new polygon each time.
		this.polygon.reset();
		Point position = getPosition();
		this.polygon.addPoint(position.x, position.y + this.headHeight / 2);
		this.polygon.addPoint(position.x, position.y + this.dimension.height);
		this.polygon.addPoint(position.x + this.dimension.width / 2, position.y + this.dimension.height
				+ this.headHeight / 2);
		this.polygon.addPoint(position.x + this.dimension.width, position.y + this.dimension.height);
		this.polygon.addPoint(position.x + this.dimension.width, position.y + this.headHeight / 2);
		this.polygon.addPoint(position.x + this.dimension.width / 2, position.y);
		DrawUtils.setupRoundedGeneralPath(polygon, getComponentShape());
	}
}