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/*******************************************************************************
* Copyright (c) 2020 THALES GLOBAL SERVICES.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.sirius.diagram.ui.edit.internal.part.layoutmanager;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.stream.Collectors;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout;
import org.eclipse.sirius.diagram.DNodeContainer;
import org.eclipse.sirius.ext.gmf.runtime.gef.ui.figures.SiriusWrapLabel;
/**
* Layout manager specific for compartment.
*
* @author lfasani
*/
public class RegionContainerConstrainedToolbarLayout extends ConstrainedToolbarLayout {
private DNodeContainer dNodeContainer;
/**
* Default constructor.
*
* @param dNodeContainer
* The DDiagramElement associated to the editPart using this layoutManager.
*/
public RegionContainerConstrainedToolbarLayout(DNodeContainer dNodeContainer) {
this.dNodeContainer = dNodeContainer;
}
/**
* Indicates if the current DNodeContainer contains children.
*/
private boolean containsRegions() {
return !dNodeContainer.getOwnedDiagramElements().isEmpty();
}
/*
* (non-Javadoc) Partly copied from super class. The change is about the way the prefSize is computed.
* @see
* org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout#calculatePreferredSize(org.eclipse.draw2d.
* IFigure, int, int)
*/
@SuppressWarnings({ "deprecation" })
@Override
protected Dimension calculatePreferredSize(IFigure container, int wHint, int hHint) {
Insets insets = container.getInsets();
if (!container.isVisible())
return new Dimension(insets.getWidth(), insets.getHeight());
if (isHorizontal()) {
// CHECKSTYLE:OFF
wHint = -1;
if (hHint >= 0)
hHint = Math.max(0, hHint - insets.getHeight());
} else {
hHint = -1;
if (wHint >= 0)
wHint = Math.max(0, wHint - insets.getWidth());
// CHECKSTYLE:ON
}
// The preferred size of the compartment is computed :
// * width: it is the preferred width of the region(s) except if there is no region (in this case the
// container's label width is used)
// * height: with whint=width previously computed, it is the preferred height of (the compartment label +
// the region)
List<IFigure> children = getChildren(container);
List<IFigure> childrenToConsider = children;
//
if (containsRegions()) {
//@formatter:off
// We remove the label of the region container
childrenToConsider = getChildren(container).stream()
.filter(figure -> !(figure instanceof SiriusWrapLabel))
.collect(Collectors.toList());
//@formatter:on
}
Dimension prefSize = calculateChildrenSize(childrenToConsider, wHint, hHint, true);
prefSize = calculateChildrenSize(children, prefSize.width, hHint, true);
// Do a second pass, if necessary
if (wHint >= 0 && prefSize.width > wHint) {
prefSize = calculateChildrenSize(childrenToConsider, prefSize.width, hHint, true);
} else if (hHint >= 0 && prefSize.height > hHint) {
prefSize = calculateChildrenSize(childrenToConsider, wHint, prefSize.height, true);
}
prefSize.height += Math.max(0, children.size() - 1) * spacing;
return transposer.t(prefSize).expand(insets.getWidth(), insets.getHeight()).union(getBorderPreferredSize(container));
}
/**
* Copied from org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout.calculateChildrenSize(List, int,
* int, boolean)
*/
private Dimension calculateChildrenSize(List<IFigure> children, int wHint, int hHint, boolean preferred) {
Dimension childSize;
IFigure child;
int height = 0;
int width = 0;
for (int i = 0; i < children.size(); i++) {
child = children.get(i);
childSize = transposer.t(preferred ? child.getPreferredSize(wHint, hHint) : child.getMinimumSize(wHint, hHint));
height += childSize.height;
width = Math.max(width, childSize.width);
}
return new Dimension(width, height);
}
/**
* Copied from org.eclipse.gmf.runtime.draw2d.ui.figures.ConstrainedToolbarLayout.getChildren(IFigure).
*/
private List<IFigure> getChildren(IFigure container) {
List<IFigure> children = new ArrayList<IFigure>(container.getChildren());
if (getIgnoreInvisibleChildren()) {
Iterator<IFigure> iter = children.iterator();
while (iter.hasNext()) {
IFigure f = iter.next();
if (!f.isVisible())
iter.remove();
}
}
if (isReversed())
Collections.reverse(children);
return children;
}
}
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