/*
* 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.action.tools;
import org.trianacode.gui.action.ActionDisplayOptions;
import org.trianacode.gui.action.ToolSelectionHandler;
import org.trianacode.gui.util.Env;
import org.trianacode.taskgraph.Node;
import org.trianacode.taskgraph.Task;
import org.trianacode.taskgraph.tool.Tool;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
/**
* Action for deccrementing input nodes.
*
* @author Matthew Shields
* @version $Revision: 4048 $
*/
public class DecInNodeAction extends AbstractAction implements ActionDisplayOptions {
private ToolSelectionHandler selhandler;
public DecInNodeAction(ToolSelectionHandler selhandler) {
super();
this.selhandler = selhandler;
putValue(SHORT_DESCRIPTION, Env.getString("decInNode"));
putValue(ACTION_COMMAND_KEY, Env.getString("decInNode"));
putValue(NAME, Env.getString("decInNode"));
putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_COMMA,
Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()
+ InputEvent.SHIFT_DOWN_MASK));
}
/**
* Invoked when an action occurs.
*/
public void actionPerformed(ActionEvent e) {
Tool tool = null;
if (e.getSource() instanceof Tool) {
tool = (Tool) e.getSource();
} else if (selhandler.isSingleSelectedTool()) {
tool = selhandler.getSelectedTool();
}
if ((tool != null) && (tool instanceof Task)) {
Task task = (Task) tool;
if (isRemoveInputNodes(task)) {
Node lastNode = task.getDataInputNode(task.getDataInputNodeCount() - 1);
task.removeDataInputNode(lastNode);
}
}
}
/**
* @return true if it is valid to remove input nodes
*/
public boolean isRemoveInputNodes(Task task) {
return (task.getDataInputNodeCount() > task.getMinDataInputNodes());
}
}