/*******************************************************************************
* CogTool Copyright Notice and Distribution Terms
* CogTool 1.3, Copyright (c) 2005-2013 Carnegie Mellon University
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt).
*
* CogTool 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.
*
* CogTool 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 CogTool; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* CogTool makes use of several third-party components, with the
* following notices:
*
* Eclipse SWT version 3.448
* Eclipse GEF Draw2D version 3.2.1
*
* Unless otherwise indicated, all Content made available by the Eclipse
* Foundation is provided to you under the terms and conditions of the Eclipse
* Public License Version 1.0 ("EPL"). A copy of the EPL is provided with this
* Content and is also available at http://www.eclipse.org/legal/epl-v10.html.
*
* CLISP version 2.38
*
* Copyright (c) Sam Steingold, Bruno Haible 2001-2006
* This software is distributed under the terms of the FSF Gnu Public License.
* See COPYRIGHT file in clisp installation folder for more information.
*
* ACT-R 6.0
*
* Copyright (c) 1998-2007 Dan Bothell, Mike Byrne, Christian Lebiere &
* John R Anderson.
* This software is distributed under the terms of the FSF Lesser
* Gnu Public License (see LGPL.txt).
*
* Apache Jakarta Commons-Lang 2.1
*
* This product contains software developed by the Apache Software Foundation
* (http://www.apache.org/)
*
* jopt-simple version 1.0
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* Copyright (c) 2004-2013 Paul R. Holser, Jr.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
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* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Mozilla XULRunner 1.9.0.5
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (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.mozilla.org/MPL/.
* Software distributed under the License is distributed on an "AS IS"
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* under the License.
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* The J2SE(TM) Java Runtime Environment version 5.0
*
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* Network Circle, Santa Clara, California 95054, U.S.A. All
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* See the LICENSE file in the jre folder for more information.
******************************************************************************/
package edu.cmu.cs.hcii.cogtool.ui;
import java.util.Iterator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.graphics.Cursor;
import edu.cmu.cs.hcii.cogtool.uimodel.PERTChartOperatorBar;
import edu.cmu.cs.hcii.cogtool.util.WindowUtil;
import edu.cmu.cs.hcii.cogtool.view.PERTInteractivePanel;
import edu.cmu.cs.hcii.cogtool.view.PERTPanel;
/**
* Responds to mouse events on a PERTInteractivePanel in order to generate
* selection events. Processing mouse movements is possible to do here as well,
* although we are not using that capability at this point.
*
* @author jbc
*/
public class PERTChartMouseState extends SWTMouseState
{
protected PERTPanel panel;
protected PERTChartSelectionState selection;
protected PERTChartOperatorBar lastBar = null;
protected Cursor currentCursor;
protected Cursor handCursor;
protected Cursor arrowCursor;
/**
* Constructor
*/
public PERTChartMouseState(PERTInteractivePanel pertPanel,
PERTChartSelectionState selnState,
UI ui)
{
super(ui);
panel = pertPanel;
selection = selnState;
handCursor = WindowUtil.getCursor(SWT.CURSOR_HAND);
arrowCursor = WindowUtil.getCursor(SWT.CURSOR_ARROW);
currentCursor = arrowCursor;
}
/*
* Generates selection events based on mouse clicks.
*
* @see org.eclipse.swt.events.MouseListener#mouseDown
*/
@Override
protected void dealWithMouseDown(MouseEvent e)
{
super.dealWithMouseDown(e);
PERTChartOperatorBar bar = panel.findBarAt(e.x, e.y);
if (bar != null) {
// TODO: allow for shift click to support multiple selection
selection.setSelectedStep(bar.getStep());
}
else {
selection.deselectAll();
}
}
@Override
protected void dealWithMouseMove(MouseEvent e)
{
super.dealWithMouseMove(e);
Iterator<PERTChartOperatorBar> bIter =
panel.getOperatorBarList().iterator();
boolean found = false;
while ((! found) && bIter.hasNext()) {
PERTChartOperatorBar bar = bIter.next();
if (bar.containsPoint(e.x, e.y)) {
found = true;
if (currentCursor != handCursor) {
currentCursor = handCursor;
panel.setCursor(currentCursor);
}
}
}
if (! found) {
if (currentCursor != arrowCursor) {
currentCursor = arrowCursor;
panel.setCursor(currentCursor);
}
}
}
}