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/*******************************************************************************
* Copyright (c) 2003, 2005 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.jst.j2ee.internal.command;
import java.util.Iterator;
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.edit.command.CopyToClipboardCommand;
import org.eclipse.wst.common.internal.emf.utilities.EtoolsCopyUtility;
public class J2EECopyToClipboardOverrideCommand extends CopyToClipboardCommand {
//The collection of source objects, with bindings and extensions, if any exist
protected J2EEClipboard extendedSourceObjects;
protected boolean onlyRefObjects = true;
public J2EECopyToClipboardOverrideCommand(CopyToClipboardCommand cmd) {
super(cmd.getDomain(), cmd.getSourceObjects());
}
protected Command createCopyCommand() {
CompoundCommand cmd = new J2EECompoundCommand(CompoundCommand.MERGE_COMMAND_ALL);
Iterator it = extendedSourceObjects.iterator();
EtoolsCopyUtility copyUtil = new EtoolsCopyUtility();
while (it.hasNext()) {
Object o = it.next();
if (!(o instanceof EObject)) {
cmd.append(UnexecutableCommand.INSTANCE);
} else {
EObject r = (EObject) o;
cmd.append(new J2EECopyCommand(r, extendedSourceObjects.getBinding(r), extendedSourceObjects.getExtension(r), copyUtil));
}
}
return cmd.unwrap();
}
protected boolean prepare() {
prepareSourceObjects();
if (!onlyRefObjects) {
copyCommand = UnexecutableCommand.INSTANCE;
return copyCommand.canExecute();
}
if (!extendedSourceObjects.hasBindings() && !extendedSourceObjects.hasExtensions())
return super.prepare();
copyCommand = createCopyCommand();
return copyCommand.canExecute();
}
protected void prepareSourceObjects() {
extendedSourceObjects = new J2EEClipboard(getSourceObjects());
Iterator it = getSourceObjects().iterator();
while (it.hasNext()) {
Object o = it.next();
if (o instanceof EObject) {
// EObject r = (EObject) o;
// TODO switch to adaptable commands
// EObject bnd = BindingAndExtensionHelper.getBinding(r);
// EObject ext = BindingAndExtensionHelper.getExtension(r);
// if (bnd != null)
// extendedSourceObjects.addBinding(r, bnd);
// if (ext != null)
// extendedSourceObjects.addExtension(r, ext);
} else {
//Right now we can only handle ref objects in the tree
onlyRefObjects = false;
return;
}
}
}
}
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