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/*****************************************************************************
* Copyright (c) 2014 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:
* Benoit Maggi (CEA LIST) benoit.maggi@cea.fr - Initial API and implementation
* Christian W. Damus (CEA) - bug 430701
* Gabriel Pascual (ALL4TEC) gabriel.pascual@all4tec.net - bug 441318, bug 455305
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.menu.handlers;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.parts.IDiagramWorkbenchPart;
import org.eclipse.gmf.runtime.diagram.ui.render.clipboard.AWTClipboardHelper;
import org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.commands.INonDirtying;
import org.eclipse.papyrus.commands.util.NonDirtyingUtils;
import org.eclipse.papyrus.commands.wrappers.EMFtoGEFCommandWrapper;
import org.eclipse.papyrus.commands.wrappers.GMFtoGEFCommandWrapper;
import org.eclipse.papyrus.infra.core.clipboard.PapyrusClipboard;
import org.eclipse.papyrus.infra.gmfdiag.common.commands.DefaultDiagramCopyCommand;
import org.eclipse.papyrus.infra.gmfdiag.common.strategy.IStrategy;
import org.eclipse.papyrus.infra.gmfdiag.common.strategy.paste.IPasteStrategy;
import org.eclipse.papyrus.infra.gmfdiag.common.strategy.paste.PasteStrategyManager;
import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramEditPartsUtil;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
/**
* Handler for the Copy Action in Diagram.
*/
public class CopyInDiagramHandler extends AbstractGraphicalCommandHandler {
/** The Constant COPY_COMMAND_LABEL. */
private static final String COPY_COMMAND_LABEL = "Copy In Diagram"; //$NON-NLS-1$
/** The Constant ACTIVE_SHELL_VARIABLE_KEY. */
private static final String ACTIVE_SHELL_VARIABLE_KEY = "activeShell"; //$NON-NLS-1$
/** The Constant ACTIVE_FOCUS_VARIABLE_KEY. */
private static final String ACTIVE_FOCUS_VARIABLE_KEY = "activeFocusControl"; //$NON-NLS-1$
/** The Constant COPY_IMAGE_COMMAND_LABEL. */
private static final String COPY_IMAGE_COMMAND_LABEL = "Create image to allow paste on system"; //$NON-NLS-1$
/** The active focus control. */
private Object activeFocusControl = null;
/** The active shell. */
private Object activeShell = null;
/**
* Construct copy command from the selection.
*
* @param editingDomain
* the editing domain
* @param selectedElements
* the selected elements
* @return the command
*/
public static Command buildCopyCommand(TransactionalEditingDomain editingDomain, Collection<IGraphicalEditPart> selectedElements) {
PapyrusClipboard<Object> papyrusClipboard = PapyrusClipboard.getNewInstance();
Command result;
DefaultDiagramCopyCommand defaultDiagramCopyCommand = new DefaultDiagramCopyCommand(editingDomain, papyrusClipboard, selectedElements);
result = EMFtoGEFCommandWrapper.wrap(defaultDiagramCopyCommand);
IDiagramWorkbenchPart activeDiagramWorkbenchPart = DiagramEditPartsUtil.getActiveDiagramWorkbenchPart();
Diagram diagram = activeDiagramWorkbenchPart.getDiagram();
DiagramEditPart diagramEditPart = activeDiagramWorkbenchPart.getDiagramEditPart();
List<Object> selectedElementModels = new ArrayList<Object>();
for (IGraphicalEditPart iGraphicalEditPart : selectedElements) {
selectedElementModels.add(iGraphicalEditPart.getModel());
}
PapyrusCopyImageCommand copyImageCommand = new PapyrusCopyImageCommand(COPY_IMAGE_COMMAND_LABEL, diagram, selectedElementModels, diagramEditPart);
if (copyImageCommand.canExecute()) {
Command gmFtoGEFCommandWrapper = GMFtoGEFCommandWrapper.wrap(copyImageCommand);
result = NonDirtyingUtils.chain(result, gmFtoGEFCommandWrapper);
} else {
copyImageCommand.dispose();
}
List<IStrategy> allStrategies = PasteStrategyManager.getInstance().getAllStrategies();
for (IStrategy iStrategy : allStrategies) {
IPasteStrategy iIPasteStrategy = (IPasteStrategy) iStrategy;
iIPasteStrategy.prepare(papyrusClipboard, null);
}
result.setLabel(COPY_COMMAND_LABEL);
return result;
}
/**
* Gets the command.
*
* @return the command
* @see org.eclipse.papyrus.views.modelexplorer.handler.AbstractCommandHandler#getCommand()
*/
@Override
protected Command getCommand() {
return CopyInDiagramHandler.buildCopyCommand(getEditingDomain(), getSelectedElements());
}
/**
* @see org.eclipse.papyrus.infra.gmfdiag.menu.handlers.AbstractGraphicalCommandHandler#setEnabled(java.lang.Object)
*
* @param evaluationContext
*/
@Override
public void setEnabled(Object evaluationContext) {
// Local handling
if (evaluationContext instanceof IEvaluationContext) {
IEvaluationContext iEvaluationContext = (IEvaluationContext) evaluationContext;
activeFocusControl = iEvaluationContext.getVariable(ACTIVE_FOCUS_VARIABLE_KEY);
activeShell = iEvaluationContext.getVariable(ACTIVE_SHELL_VARIABLE_KEY);
}
// Parent handling
super.setEnabled(evaluationContext);
}
/**
* @see org.eclipse.papyrus.infra.gmfdiag.menu.handlers.AbstractGraphicalCommandHandler#computeEnabled()
*
* @return
*/
@Override
protected boolean computeEnabled() {
boolean isEnable = false;
Control focusControl = null;
if (activeShell instanceof Shell) {
Shell shell = (Shell) activeShell;
Display display = shell.getDisplay();
if (display != null) {
focusControl = display.getFocusControl();
}
}
if (!(activeFocusControl instanceof StyledText) && !(focusControl instanceof Text)) { // false if the focus is on an internal xtext editor or a text edit
PapyrusClipboard<Object> instance = PapyrusClipboard.getInstance();
PapyrusClipboard.setInstance(instance);
isEnable = true;
}
return isEnable;
}
/**
* Papyrus implementation of {@link CopyImageCommand}.
*
* <p>
* Bug 441318 :<br/>
* Fix override {@link CopyImageCommand} to permit Undo. This workaround is used by GMF.
* </p>
*/
@SuppressWarnings("restriction")
static class PapyrusCopyImageCommand extends org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand implements INonDirtying {
/**
* Instantiates a new papyrus copy image command.
*
* @param label
* the label
* @param viewContext
* the view context
* @param source
* the source
* @param diagramEP
* the diagram ep
*/
PapyrusCopyImageCommand(String label, View viewContext, @SuppressWarnings("rawtypes") List source, DiagramEditPart diagramEP) {
super(label, viewContext, source, diagramEP);
}
/**
* @see org.eclipse.core.commands.operations.AbstractOperation#canExecute()
*
* @return
*/
@Override
public boolean canExecute() {
return AWTClipboardHelper.getInstance().isImageCopySupported();
}
/**
* Can undo.
*
* @return true, if successful
* @see org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand#canUndo()
*/
@Override
public boolean canUndo() {
return true;
}
/**
* @see org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand#canRedo()
*
* @return
*/
@Override
public boolean canRedo() {
return true;
}
/**
* @see org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand#doUndoWithResult(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
*
* @param progressMonitor
* @param info
* @return
* @throws ExecutionException
*/
@Override
protected CommandResult doUndoWithResult(
IProgressMonitor progressMonitor, IAdaptable info)
throws ExecutionException {
return CommandResult.newOKCommandResult();
}
/**
* @see org.eclipse.gmf.runtime.diagram.ui.render.internal.commands.CopyImageCommand#doRedoWithResult(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
*
* @param progressMonitor
* @param info
* @return
* @throws ExecutionException
*/
@Override
protected CommandResult doRedoWithResult(
IProgressMonitor progressMonitor, IAdaptable info)
throws ExecutionException {
return CommandResult.newOKCommandResult();
}
}
}
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