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/*****************************************************************************
* Copyright (c) 2010 CEA
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Atos Origin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.locator;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gmf.runtime.diagram.ui.internal.figures.BorderItemContainerFigure;
import org.eclipse.gmf.runtime.gef.ui.figures.DefaultSizeNodeFigure;
import org.eclipse.papyrus.uml.diagram.common.locator.AdvancedBorderItemLocator;
import org.eclipse.papyrus.uml.diagram.sequence.figures.DestructionEventFigure;
/**
* This class is used to place all BorderItem node in the middle of the figure for the X but let the position Y
*
*/
public class CenterLocator extends AdvancedBorderItemLocator {
/**
* Constructor
*
* @param parentFigure
* the parent figure
* @param location
* ContinuationLocator.TOP or ContinuationLocator.BOTTOM
*/
public CenterLocator(IFigure parentFigure, int location) {
super(parentFigure, location);
}
/**
* The DestructionEventFigure.
*
* It must be access through the method {@link #getDestructionEventFigure()}
*/
private DestructionEventFigure destructionEventFigure = null;
/**
* The BorderItemContainerFigure. It must be access through the method {@link #getBorderItemContainerFigure()}
*/
private BorderItemContainerFigure borderItemContainerFigure = null;
/**
* Get the DestructionEventFigure of the lifeline, if it is drawn.
*
* @return the DestructionEventFigure or null
*/
private DestructionEventFigure getDestructionEventFigure() {
if (destructionEventFigure == null) {
BorderItemContainerFigure borderItemContainerFigure = getBorderItemContainerFigure();
if (borderItemContainerFigure != null) {
for (Object child : borderItemContainerFigure.getChildren()) {
if (child instanceof DefaultSizeNodeFigure) {
for (Object figure : ((DefaultSizeNodeFigure) child).getChildren()) {
if (figure instanceof DestructionEventFigure) {
destructionEventFigure = (DestructionEventFigure) figure;
return destructionEventFigure;
}
}
}
}
}
}
return destructionEventFigure;
}
/**
* Get the BorderItemContainerFigure
*
* @return the borderItemContainerFigure or null
*/
private BorderItemContainerFigure getBorderItemContainerFigure() {
if (borderItemContainerFigure == null) {
IFigure figure = getParentFigure().getParent();
for (Object object : figure.getChildren()) {
if (object instanceof BorderItemContainerFigure) {
borderItemContainerFigure = (BorderItemContainerFigure) object;
return borderItemContainerFigure;
}
}
}
return borderItemContainerFigure;
}
/**
* Overridden :
* - the destructionEventFigure is always drawn at the end of the figure
*
* @see org.eclipse.papyrus.uml.diagram.common.locator.AdvancedBorderItemLocator#getValidLocation(org.eclipse.draw2d.geometry.Rectangle, org.eclipse.draw2d.IFigure)
*/
@Override
public Rectangle getValidLocation(Rectangle proposedLocation, IFigure borderItem) {
// The valid position for destruction event is always the bottom
if (getDestructionEventFigure() != null) {
if (borderItem.equals(getDestructionEventFigure().getParent())) {
Rectangle realLocation = new Rectangle(proposedLocation);
Point point = new Point(getParentBorder().getCenter().x - realLocation.getSize().width / 2, getParentBorder().y + getParentBorder().height - realLocation.height / 2);
realLocation.setLocation(point);
return realLocation;
}
}
proposedLocation.setX(getParentFigure().getBounds().x + getParentFigure().getBounds().width / 2 - borderItem.getBounds().width() / 2);
if (proposedLocation.y - proposedLocation.height / 2 <= getParentFigure().getBounds().y) {
proposedLocation.setY(getParentFigure().getBounds().y);
}
if (proposedLocation.y - proposedLocation.height / 2 >= getParentFigure().getBounds().getBottomLeft().y) {
proposedLocation.setY(getParentFigure().getBounds().getBottomLeft().y);
}
return super.getValidLocation(proposedLocation, borderItem);
}
}
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