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/*****************************************************************************
* Copyright (c) 2017 CEA LIST and others.
*
* 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:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.util;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.gef.ConnectionEditPart;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramRootEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.papyrus.infra.gmfdiag.common.selection.SelectSeveralLinksEditPartTracker;
import org.eclipse.papyrus.uml.diagram.sequence.edit.parts.AbstractMessageEditPart;
import org.eclipse.papyrus.uml.diagram.sequence.part.UMLDiagramEditorPlugin;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.PlatformUI;
/**
* @author Patrick Tessier
* @since 3.0
*
*/
public class SelectMessagesEditPartTracker extends SelectSeveralLinksEditPartTracker {
protected Listener KeyDownListener = new Listener() {
@Override
public void handleEvent(Event event) {
// in case the SHIFT key is released, the creation mode goes back to normal
if (event.keyCode == SWT.SHIFT) {
allowReoder = true;
}
}
};
protected Listener KeyUPListener = new Listener() {
@Override
public void handleEvent(Event event) {
// in case the SHIFT key is released, the creation mode goes back to normal
if (event.keyCode == SWT.SHIFT) {
allowReoder = false;
}
}
};
protected int MinDistancetop = Integer.MAX_VALUE;
protected int MinDistancebottom = Integer.MAX_VALUE;
protected Dimension delta = null;
/**
* @see org.eclipse.gef.tools.AbstractTool#activate()
*
*/
@Override
public void activate() {
super.activate();
}
/**
* @see org.eclipse.papyrus.infra.gmfdiag.common.selection.SelectSeveralLinksEditPartTracker#handleButtonDown(int)
*
* @param button
* @return
*/
@Override
protected boolean handleButtonDown(int button) {
Dimension delta = null;
MinDistancetop = Integer.MAX_VALUE;
MinDistancebottom = Integer.MAX_VALUE;
// 1. look for all Nodes connected by connections
// and find the MinDistancetop (maximum mouvment without reorder to the top) and the MinDistancebottom (maximum distance without reorder to the bottom)
ArrayList<GraphicalEditPart> nodeEditPart = new ArrayList<>();
List selectedEditparts = getOperationSet();
for (int i = 0; i < selectedEditparts.size(); i++) {
Object currentEditPart = selectedEditparts.get(i);
if (currentEditPart instanceof org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart) {
org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart currentConnectionEdiPart = (org.eclipse.gmf.runtime.diagram.ui.editparts.ConnectionEditPart) currentEditPart;
nodeEditPart.add((GraphicalEditPart) currentConnectionEdiPart.getSource());
}
}
// 2. take all messages between this nodes
ArrayList<AbstractMessageEditPart> messageEditPartList = new ArrayList<>();
for (GraphicalEditPart anodeEditPart : nodeEditPart) {
for (Object connection : anodeEditPart.getSourceConnections()) {
if (connection instanceof AbstractMessageEditPart) {
if (!(selectedEditparts.contains(connection))) {
messageEditPartList.add((AbstractMessageEditPart) connection);
}
}
}
for (Object connection : anodeEditPart.getTargetConnections()) {
if (!(selectedEditparts.contains(connection))) {
if (connection instanceof AbstractMessageEditPart) {
messageEditPartList.add((AbstractMessageEditPart) connection);
}
}
}
}
// 3 calculate minimum distance
for (AbstractMessageEditPart abstractMessageEditPart : messageEditPartList) {
Point currentConnectionPosition = abstractMessageEditPart.getConnectionFigure().getPoints().getFirstPoint().getCopy();
for (Object selectedEditPart : selectedEditparts) {
if (selectedEditPart instanceof AbstractMessageEditPart) {
AbstractMessageEditPart currentSelectedMessage = (AbstractMessageEditPart) selectedEditPart;
Point currentSelectedConnectionPosition = currentSelectedMessage.getConnectionFigure().getPoints().getFirstPoint().getCopy();
// selected Message is below the currentConnection
if (currentConnectionPosition.y < currentSelectedConnectionPosition.y) {
if (MinDistancetop > (currentSelectedConnectionPosition.y - currentConnectionPosition.y)) {
MinDistancetop = (currentSelectedConnectionPosition.y - currentConnectionPosition.y);
}
}
}
}
}
return super.handleButtonDown(button);
}
/**
* Constructor.
*
* @param owner
*/
public SelectMessagesEditPartTracker(ConnectionEditPart owner) {
super(owner);
PlatformUI.getWorkbench().getDisplay().addFilter(SWT.KeyDown, KeyDownListener);
PlatformUI.getWorkbench().getDisplay().addFilter(SWT.KeyUp, KeyUPListener);
}
private boolean allowReoder = false;
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.Tool#deactivate()
*/
@Override
public void deactivate() {
PlatformUI.getWorkbench().getDisplay().removeFilter(SWT.KeyUp, KeyDownListener);
PlatformUI.getWorkbench().getDisplay().removeFilter(SWT.KeyUp, KeyUPListener);
super.deactivate();
}
/**
* @see org.eclipse.gef.tools.SimpleDragTracker#updateSourceRequest()
*/
@Override
protected void updateSourceRequest() {
if (!allowReoder) {
Dimension computedDelta = getLocation().getDifference(getStartLocation());
delta = null;
if (computedDelta.height < 0) {
UMLDiagramEditorPlugin.log.trace(LogOptions.SEQUENCE_DEBUG_UTIL, "Move " + computedDelta.height + " MinDistancetop" + MinDistancetop);//$NON-NLS-1$
if (MinDistancetop + computedDelta.height < 0) {
computedDelta.height = -MinDistancetop;
delta = computedDelta.getCopy();
}
} else {
UMLDiagramEditorPlugin.log.trace(LogOptions.SEQUENCE_DEBUG_UTIL, "Move " + computedDelta.height + " MinDistancebottom" + MinDistancebottom);//$NON-NLS-1$
if (MinDistancebottom - computedDelta.height - 10 < 0) {
computedDelta.height = MinDistancebottom - 10;
delta = computedDelta.getCopy();
}
}
}
super.updateSourceRequest();
}
@Override
protected Dimension getDragMoveDelta() {
if (delta == null) {
return getLocation().getDifference(getStartLocation());
} else {
return delta;
}
}
/**
* Walks up the editpart hierarchy to find and return the
* <code>TopGraphicEditPart</code> instance.
*/
public DiagramEditPart getDiagramEditPart(EditPart editPart) {
while (editPart instanceof IGraphicalEditPart) {
if (editPart instanceof DiagramEditPart) {
return (DiagramEditPart) editPart;
}
editPart = editPart.getParent();
}
if (editPart instanceof DiagramRootEditPart) {
return (DiagramEditPart) ((DiagramRootEditPart) editPart).getChildren().get(0);
}
return null;
}
}
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