| /******************************************************************************* |
| * Copyright (c) 2005, 2012 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.bpel.ui.editparts.policies; |
| |
| import org.eclipse.bpel.ui.BPELUIPlugin; |
| import org.eclipse.bpel.ui.IBPELUIConstants; |
| import org.eclipse.bpel.ui.editparts.BPELEditPart; |
| import org.eclipse.draw2d.IFigure; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.GraphicalEditPart; |
| import org.eclipse.gef.Request; |
| import org.eclipse.gef.RequestConstants; |
| import org.eclipse.jface.resource.ColorRegistry; |
| import org.eclipse.swt.graphics.Color; |
| |
| |
| public class ContainerHighlightEditPolicy extends BPELSelectionEditPolicy { |
| |
| private Color revertColor = null; |
| private boolean revertOpaque; |
| private Color highlightColor = null; |
| |
| public ContainerHighlightEditPolicy(boolean resizable, boolean movable) { |
| super(resizable, movable); |
| } |
| |
| @Override |
| public void eraseTargetFeedback(Request request) { |
| if (revertColor != null) { |
| setContainerBackground(revertColor); |
| getContainerFigure().setOpaque(revertOpaque); |
| revertColor = null; |
| } |
| } |
| |
| @Override |
| public void activate() { |
| super.activate(); |
| if (highlightColor == null) { |
| BPELUIPlugin plugin = BPELUIPlugin.INSTANCE; |
| ColorRegistry colorRegistry = plugin.getColorRegistry(); |
| highlightColor = colorRegistry.get(IBPELUIConstants.COLOR_GRADIENT_TO); |
| } |
| } |
| |
| @Override |
| public void deactivate() { |
| super.deactivate(); |
| if (highlightColor != null) { |
| highlightColor = null; |
| } |
| |
| if (revertColor != null) { |
| setContainerBackground(revertColor); |
| getContainerFigure().setOpaque(revertOpaque); |
| revertColor = null; |
| } |
| |
| } |
| |
| private Color getContainerBackground() { |
| return getContainerFigure().getBackgroundColor(); |
| } |
| |
| private IFigure getContainerFigure() { |
| return ((GraphicalEditPart) getHost()).getContentPane(); |
| } |
| |
| @Override |
| public EditPart getTargetEditPart(Request request) { |
| return request.getType().equals(RequestConstants.REQ_SELECTION_HOVER) ? getHost() : null; |
| } |
| |
| private void setContainerBackground(Color c) { |
| getContainerFigure().setBackgroundColor(c); |
| } |
| |
| protected void showHighlight() { |
| if (revertColor == null) { |
| revertOpaque = getContainerFigure().isOpaque(); |
| revertColor = getContainerBackground(); |
| setContainerBackground(highlightColor); |
| getContainerFigure().setOpaque(true); |
| } |
| } |
| |
| @Override |
| public void showTargetFeedback(Request request) { |
| super.showTargetFeedback(request); |
| if (request.getType().equals(RequestConstants.REQ_MOVE) |
| || request.getType().equals(RequestConstants.REQ_ADD) |
| || request.getType().equals(RequestConstants.REQ_CREATE)) { |
| |
| if (((BPELEditPart) getHost()).canExecuteRequest(request)) { |
| showHighlight(); |
| } |
| } |
| } |
| } |