Bug 290261 - [Usability] Papyrus shall provide a copy/paste/cut feature

  - add cut for diagram and model explorer 
  - cut => copy + delete

Change-Id: I51680e4d4bdd775222a9d8c7fdf32ea35e3ce017
Signed-off-by: bmaggi <benoit.maggi@cea.fr>

1 files changed, 146 insertions, 48 deletions

diff --git a/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/handler/CutHandler.java b/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/handler/CutHandler.java
index 83961d6d626..09613a5afd4 100644
--- a/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/handler/CutHandler.java
+++ b/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/handler/CutHandler.java
@@ -1,48 +1,146 @@
-/*****************************************************************************

- * Copyright (c) 2011 CEA LIST.

- *

- *    

- * 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:

- *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation

- *

- *****************************************************************************/

-package org.eclipse.papyrus.views.modelexplorer.handler;

-

-import java.util.List;

-

-import org.eclipse.emf.common.command.Command;

-import org.eclipse.emf.ecore.EObject;

-import org.eclipse.emf.edit.command.CutToClipboardCommand;

-

-/**

- * Handler for the Cur Action

- * 

- * 

- * 

- */

-public class CutHandler extends AbstractCommandHandler {

-

-	/**

-	 * 

-	 * @see org.eclipse.papyrus.views.modelexplorer.handler.AbstractCommandHandler#getCommand()

-	 * 

-	 * @return

-	 */

-	@Override

-	protected Command getCommand() {

-		List<EObject> selection = getSelectedElements();

-		return CutToClipboardCommand.create(getEditingDomain(), selection);

-	}

-

-	@Override

-	protected boolean computeEnabled() {

-		//done explicitly inorder to desactivate it.

-		return false;

-	}

-

-}

+/*****************************************************************************
+ * Copyright (c) 2011 CEA LIST.
+ *
+ *    
+ * 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:
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.views.modelexplorer.handler;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.emf.common.command.Command;
+import org.eclipse.emf.common.command.CompoundCommand;
+import org.eclipse.emf.common.command.UnexecutableCommand;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.transaction.TransactionalEditingDomain;
+import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
+import org.eclipse.gmf.runtime.common.core.command.ICommand;
+import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
+import org.eclipse.papyrus.infra.core.clipboard.PapyrusClipboard;
+import org.eclipse.papyrus.infra.gmfdiag.common.commands.DefaultCopyCommand;
+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.services.edit.service.ElementEditServiceUtils;
+import org.eclipse.papyrus.infra.services.edit.service.IElementEditService;
+
+/**
+ * Handler for the Cut Action in Model Explorer : it's a copy followed by a delete
+ * 
+ */
+public class CutHandler extends AbstractCommandHandler {
+
+	/**
+	 * 
+	 * @see org.eclipse.papyrus.views.modelexplorer.handler.AbstractCommandHandler#getCommand()
+	 * 
+	 * @return
+	 */
+	@Override
+	protected Command getCommand() {
+		CompoundCommand cutInModelExplorerCommand = new CompoundCommand("Cut in Model Explorer Command"); //$NON-NLS-1$
+		DefaultCopyCommand copyCommand = buildCopyCommand();
+		cutInModelExplorerCommand.append(copyCommand);
+		Command create = buildDeleteCommand();
+		cutInModelExplorerCommand.append(create);
+		return cutInModelExplorerCommand;
+	}
+
+
+	/**
+	 * Construct a copy command with the cut selection
+	 * @return the copy command
+	 */
+	protected DefaultCopyCommand buildCopyCommand() {
+		List<EObject> selection = getSelectedElements();
+		TransactionalEditingDomain editingDomain = getEditingDomain();
+		PapyrusClipboard<Object> papyrusClipboard = PapyrusClipboard.getNewInstance();
+		DefaultCopyCommand defaultCopyCommand = new DefaultCopyCommand(editingDomain, papyrusClipboard, selection);
+		List<IStrategy> allStrategies = PasteStrategyManager.getInstance().getAllStrategies();
+		for(IStrategy iStrategy : allStrategies) {
+			IPasteStrategy iPasteStrategy = (IPasteStrategy)iStrategy;
+			iPasteStrategy.prepare(papyrusClipboard);
+		}
+		return defaultCopyCommand;
+	}
+
+
+	/**
+	 * Construct a delete command with the cut selection
+	 * @return the delete command
+	 */
+	protected Command buildDeleteCommand() {
+
+		ICommand gmfCommand = null;
+
+		// Parameters store the Request parameters of the previous request
+		// if multiple elements are selected for deletion.
+		Map parameters = new HashMap();
+
+		for(EObject selectedEObject : getSelectedElements()) {
+
+			if(selectedEObject == null) {
+				continue;
+			}
+
+			IElementEditService provider = ElementEditServiceUtils.getCommandProvider(selectedEObject);
+			if(provider == null) {
+				continue;
+			}
+
+			// Retrieve delete command from the Element Edit service
+			DestroyElementRequest request = new DestroyElementRequest(selectedEObject, false);
+			// Add parameters (contains the list of previously dependents to be deleted
+			// by previous commands.
+			request.getParameters().putAll(parameters);
+
+			ICommand deleteCommand = provider.getEditCommand(request);
+
+			// Add current EObject destroy command to the global command
+			gmfCommand = CompositeCommand.compose(gmfCommand, deleteCommand);
+
+			// Store the new parameters for next delete command.
+			parameters.clear();
+			parameters.putAll(request.getParameters());
+		}
+
+		if(gmfCommand == null) {
+			return UnexecutableCommand.INSTANCE;
+		}
+
+		Command emfCommand = new org.eclipse.papyrus.commands.wrappers.GMFtoEMFCommandWrapper(gmfCommand.reduce());
+		return emfCommand;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.papyrus.views.modelexplorer.handler.AbstractCommandHandler#computeEnabled()
+	 */
+	@Override
+	protected boolean computeEnabled() { // copy is enable as long as there is an EObject to put in the Clipboard
+		return !getSelectedElements().isEmpty();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.eclipse.papyrus.views.modelexplorer.handler.AbstractCommandHandler#setEnabled(java.lang.Object)
+	 */
+	@Override
+	public void setEnabled(Object evaluationContext) {
+		PapyrusClipboard<Object> instance = PapyrusClipboard.getInstance();
+		super.setEnabled(evaluationContext); // setEnabled should'nt clear/modify the clipboard
+		PapyrusClipboard.setInstance(instance);
+	}
+
+}