/*
* The University of Wales, Cardiff Triana Project Software License (Based
* on the Apache Software License Version 1.1)
*
* Copyright (c) 2007 University of Wales, Cardiff. All rights reserved.
*
* Redistribution and use of the software 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 the University of Wales, Cardiff for the Triana
* Project (http://www.trianacode.org)." Alternately, this
* acknowledgment may appear in the software itself, if and wherever
* such third-party acknowledgments normally appear.
*
* 4. The names "Triana" and "University of Wales, Cardiff" must not be
* used to endorse or promote products derived from this software
* without prior written permission. For written permission, please
* contact triana@trianacode.org.
*
* 5. Products derived from this software may not be called "Triana," nor
* may Triana appear in their name, without prior written permission of
* the University of Wales, Cardiff.
*
* 6. This software may not be sold, used or incorporated into any product
* for sale to third parties.
*
* 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 UNIVERSITY OF WALES, CARDIFF 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.
*
* ------------------------------------------------------------------------
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Triana Project. For more information on the
* Triana Project, please see. http://www.trianacode.org.
*
* This license is based on the BSD license as adopted by the Apache
* Foundation and is governed by the laws of England and Wales.
*
*/
package org.trianacode.gui.hci;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.SwingUtilities;
import org.trianacode.gui.main.IndicationCableInterface;
import org.trianacode.gui.main.NodeComponent;
import org.trianacode.gui.main.TaskGraphPanel;
import org.trianacode.taskgraph.Node;
import org.trianacode.taskgraph.Task;
import org.trianacode.taskgraph.TaskGraphException;
import org.trianacode.taskgraph.TaskGraphUtils;
import org.trianacode.taskgraph.tool.Tool;
/**
* A class for handling mouse functions on a node. This functionality was originally in ToolMouseHandler
*
* @author Ian Wang
*/
public class NodeMouseHandler implements MouseListener, MouseMotionListener {
/**
* a reference to the taskgraph panel
*/
private TaskGraphPanel panel;
/**
* the node component a cable is being dragged from
*/
private NodeComponent output;
public NodeMouseHandler(TaskGraphPanel panel) {
this.panel = panel;
}
/**
* @return the node component an event is associated with (or null if unknown)
*/
private NodeComponent getNodeComponent(MouseEvent event) {
if (!(event.getSource() instanceof NodeComponent)) {
return null;
}
return (NodeComponent) event.getSource();
}
/**
* Invoked when the mouse button has been clicked (pressed and released) on a component.
*/
public void mouseClicked(MouseEvent event) {
NodeComponent comp = getNodeComponent(event);
if (comp == null) {
return;
}
if (SwingUtilities.isRightMouseButton(event)) {
if (comp.isOutputNode() && comp.isConnectable()) {
Task task = comp.getNode().getTask();
if (!task.isParameterName(Tool.OUTPUT_POLICY)) {
task.setParameter(Tool.OUTPUT_POLICY, Tool.COPY_OUTPUT);
} else if (task.getParameter(Tool.OUTPUT_POLICY).equals(Tool.COPY_OUTPUT)) {
task.setParameter(Tool.OUTPUT_POLICY, Tool.CLONE_MULTIPLE_OUTPUT);
} else {
task.setParameter(Tool.OUTPUT_POLICY, Tool.COPY_OUTPUT);
}
}
comp.getComponent().invalidate();
comp.getComponent().validate();
comp.getComponent().repaint();
}
if (event.getClickCount() == 2) {
try {
Node node = comp.getNode();
if (node.getTask().getParent() != null) {
TaskGraphUtils.disconnectControlTask(node.getTask().getParent());
if (node.getChildNode() != null) {
node.getChildNode().getTask().removeNode(node.getChildNode());
} else if (node.isConnected()) {
node.getTask().getParent().disconnect(node.getCable());
}
TaskGraphUtils.connectControlTask(node.getTask().getParent());
}
} catch (TaskGraphException except) {
except.printStackTrace();
}
}
}
/**
* Invoked when the mouse enters a component.
*/
public void mouseEntered(MouseEvent e) {
}
/**
* Invoked when the mouse exits a component.
*/
public void mouseExited(MouseEvent e) {
}
/**
* Invoked when a mouse button has been pressed on a component.
*/
public void mousePressed(MouseEvent event) {
if (panel instanceof IndicationCableInterface) {
NodeComponent comp = getNodeComponent(event);
if (comp == null) {
return;
}
if (comp.isOutputNode() && comp.isConnectable()) {
output = comp;
} else {
output = null;
}
}
}
/**
* Invoked when a mouse button has been released on a component.
*/
public void mouseReleased(MouseEvent event) {
if (panel instanceof IndicationCableInterface) {
if (output != null) {
NodeComponent comp = ((IndicationCableInterface) panel).getIndicationNode();
if ((comp != null) && comp.isInputNode() && comp.isConnectable()) {
TaskGraphHandler.connect(panel, output.getNode(), comp.getNode());
}
}
((IndicationCableInterface) panel).clearIndicationCableInterface();
output = null;
}
}
/**
* Invoked when a mouse button is pressed on a component and then dragged. <code>MOUSE_DRAGGED</code> events will
* continue to be delivered to the component where the drag originated until the mouse button is released
* (regardless of whether the mouse position is within the bounds of the component).
* <p/>
* Due to platform-dependent Drag&Drop implementations, <code>MOUSE_DRAGGED</code> events may not be delivered
* during a native Drag&Drop operation.
*/
public void mouseDragged(MouseEvent event) {
if ((output != null) && (panel instanceof IndicationCableInterface)) {
((IndicationCableInterface) panel).drawIndicationCableInterface(output.getComponent(), event.getPoint());
}
}
/**
* Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed.
*/
public void mouseMoved(MouseEvent e) {
}
}