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/*****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
*
* 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
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.utils;
import java.util.ArrayList;
import java.util.List;
import java.util.TreeMap;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gmf.runtime.notation.View;
/**
* @since 3.0
*/
public class EditPartUtils {
public static EditPart findFirstChildEditPartWithId(final EditPart editPart, final String visualId) {
final List<? extends EditPart> result = findChildEditPartsWithId(editPart, visualId);
if (result.isEmpty()) {
return null;
}
return result.get(0);
}
public static List<? extends EditPart> findChildEditPartsWithId(final EditPart editPart, final String visualId) {
final List<EditPart> editParts = new ArrayList<>();
internalFindChildEditPartsWithId(editPart, visualId, editParts);
return editParts;
}
private static void internalFindChildEditPartsWithId(final EditPart editPart, final String visualId, final List<EditPart> result) {
final Object model = editPart.getModel();
if (model instanceof View) {
final View view = (View) model;
if (view.getType() != null) {
if (view.getType().equals(visualId)) {
result.add(editPart);
}
}
}
@SuppressWarnings("unchecked")
final List<EditPart> children = editPart.getChildren();
for (final EditPart child : children) {
internalFindChildEditPartsWithId(child, visualId, result);
}
}
public static EditPart findParentEditPartWithId(final EditPart editPart, final String visualId) {
EditPart parent = editPart;
while (parent != null) {
final Object model = parent.getModel();
if (model instanceof View) {
final View parentView = (View) model;
if (parentView.getType() != null) {
if (parentView.getType().equals(visualId)) {
return parent;
}
}
parent = parent.getParent();
} else {
break;
}
}
return null;
}
/**
* Find the EditPart whose Figure is closest to the given y-coordinate.
*
* @param ordinate
* the y-coordinate
* @param editParts
* the EditParts among which to choose
* @return the EditPart closest to the given vertical coordinate
*/
public static GraphicalEditPart findEditPartClosestToOrdinate(final int ordinate, final List<? extends GraphicalEditPart> editParts) {
if (editParts.isEmpty()) {
return null;
}
final TreeMap<Integer, GraphicalEditPart> distanceMap = new TreeMap<>();
for (final GraphicalEditPart editPart : editParts) {
final IFigure figure = editPart.getFigure();
final Rectangle bounds = new Rectangle(figure.getBounds());
figure.getParent().translateToAbsolute(bounds);
final int posY = bounds.y + bounds.height / 2;
final int distance = Math.abs(posY - ordinate);
distanceMap.put(Integer.valueOf(distance), editPart);
}
return distanceMap.values().iterator().next();
}
/** Reveals the given EditPart in its viewer */
public static void revealEditPart(final EditPart editPart) {
if (editPart != null && editPart.getViewer() != null) {
editPart.getViewer().reveal(editPart);
}
}
}
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