/* $Id: ModeBroomMessages.java 17875 2010-01-12 21:02:56Z linus $
*****************************************************************************
* Copyright (c) 2009 Contributors - see below
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* bobtarling
*****************************************************************************
*
* Some portions of this file was previously release using the BSD License:
*/
// Copyright (c) 2007 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
package org.argouml.sequence2.diagram;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import org.tigris.gef.base.FigModifyingModeImpl;
import org.tigris.gef.base.Globals;
import org.tigris.gef.presentation.FigNode;
/**
* Brooms all the message which y coordinate is upper than the position
* of the broom.
* TODO: Provide a ModeFactory and then this class can become package scope.
* @author penyaskito
*/
public class ModeBroomMessages extends FigModifyingModeImpl {
private static final int DIRECTION_UNDEFINED = 0;
private static final int DIRECTION_UPWARD = 1;
private static final int DIRECTION_DOWNWARD = 2;
private int currentDirection;
private boolean shouldDraw = true;
private int x1, x2, y;
private int lastX1, lastX2, lastY;
/**
*
*/
public ModeBroomMessages() {
currentDirection = DIRECTION_UNDEFINED;
}
/**
* Handle mouse down events by preparing for a drag.
* @param me The mouse event.
*/
public void mousePressed(MouseEvent me) {
if (me.isConsumed()) {
return;
}
// we initialize the coordinates.
x1 = me.getX();
x2 = me.getX();
y = me.getY();
lastX1 = x1 - 100;
lastY = y;
lastX2 = x1 + 100;
editor.damageAll();
me.consume();
start();
}
@Override
public void mouseDragged(MouseEvent me) {
me.consume();
editor.getSelectionManager().deselectAll();
int crY = 0;
List nodes = editor.getGraphModel().getNodes();
if (nodes.size() > 0) {
crY = (editor.getLayerManager().
getActiveLayer().presentationFor(nodes.get(0))).getY();
}
Point snapPt = me.getPoint();
snapPt.x = Math.max(0, snapPt.x);
snapPt.y = Math.max(crY, snapPt.y);
editor.snap(snapPt);
int dy = snapPt.y - lastY;
if (dy == 0) {
// we do nothing
x1 = me.getX();
x2 = me.getX();
editor.damageAll();
return;
}
// manage if cursor x is less than lastX1
lastX1 = Math.min(snapPt.x, lastX1);
// manage if cursor x is more than lastX2
lastX2 = Math.max(snapPt.x, lastX2);
// manage changes of direction...
if (currentDirection == DIRECTION_UPWARD
&& dy > 0) {
currentDirection = DIRECTION_DOWNWARD;
}
else if (currentDirection == DIRECTION_DOWNWARD
&& dy > 0) {
currentDirection = DIRECTION_UPWARD;
}
// I have no direction yet
if (currentDirection == DIRECTION_UNDEFINED) {
if (dy < 0) {
currentDirection = DIRECTION_UPWARD;
} else if (dy > 0) {
currentDirection = DIRECTION_DOWNWARD;
}
}
x1 = lastX1;
x2 = lastX2;
// we move down or up the messages that are downward the broom
if (currentDirection == DIRECTION_DOWNWARD
|| currentDirection == DIRECTION_UPWARD) {
List<FigMessage> messages = getAllFigMessagesDownward(lastY);
for (FigMessage message : messages) {
message.translate(0, dy);
// we recalculate all the activations
FigNode source = message.getSourceFigNode();
if (source != null && source instanceof FigClassifierRole) {
((FigClassifierRole) source).createActivations();
}
FigNode dest = message.getDestFigNode();
if (dest != null && !message.isSelfMessage()
&& dest instanceof FigClassifierRole) {
((FigClassifierRole) dest).createActivations();
}
}
}
lastY = snapPt.y;
editor.damageAll();
}
@Override
public void mouseReleased(MouseEvent me) {
// in this event we do nothing,
// only stop drawing the broom.
shouldDraw = false;
me.consume();
editor.damageAll();
done();
}
/**
* Gets all the messages that are downward to a y position
* @param position the coordinate
* @return the list with all the messages.
*/
private List<FigMessage> getAllFigMessagesDownward(int position) {
final List<FigMessage> messages = getAllFigMessages();
List<FigMessage> dMessages = new LinkedList<FigMessage>();
for (FigMessage message : messages) {
if (message.getY() > position) {
dMessages.add(message);
}
}
return dMessages;
}
/**
* Gets all the figmessages of the diagram.
* @return the list of FigMessages
*/
private List<FigMessage> getAllFigMessages() {
List edges = editor.getGraphModel().getEdges();
List<FigMessage> messages = new ArrayList<FigMessage>(edges.size());
for (Object message : edges) {
Object figM =
(editor.getLayerManager().
getActiveLayer().presentationFor(message));
messages.add((FigMessage) figM);
}
return messages;
}
@Override
public void paint(Graphics g) {
if (!shouldDraw) {
return;
}
Color selectRectColor = Globals.getPrefs().getRubberbandColor();
g.setColor(selectRectColor);
switch(currentDirection) {
case DIRECTION_UNDEFINED:
// we draw a cross
g.fillRect(x1 - 10, y - 2, 20, 4);
g.fillRect((x1 + x2) / 2 - 2, y - 10, 4, 20);
break;
case DIRECTION_UPWARD:
g.fillRect(lastX1, lastY - 2, lastX2 - lastX1, 4);
g.fillRect((lastX1 + lastX2) / 2 - 2, lastY, 4, 10);
break;
case DIRECTION_DOWNWARD:
g.fillRect(lastX1, lastY - 2, lastX2 - lastX1, 4);
g.fillRect((lastX1 + lastX2) / 2 - 2, lastY - 10, 4, 10);
break;
}
}
}