plugins/org.eclipse.egf.model.edit/src/org/eclipse/egf/model/fcore/commands/resource/ResourceRemoveCommand.java

/**
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * 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:
 * Thales Corporate Services S.A.S - initial API and implementation
 */
package org.eclipse.egf.model.fcore.commands.resource;

import java.util.Collection;

import org.eclipse.egf.model.fcore.util.FcoreResourceImpl;
import org.eclipse.emf.edit.command.CommandActionDelegate;
import org.eclipse.emf.edit.command.RemoveCommand;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.provider.IItemLabelProvider;

/**
 * The FcoreResourceImpl supports multi-rooted resources
 * and therefore this command will remove a root from the resource..
 */
public class ResourceRemoveCommand extends RemoveCommand implements CommandActionDelegate {

    /**
     */
    private FcoreResourceImpl _resource = null;

    /**
     * Attribute for the adapter factory
     */
    private IItemLabelProvider _labelProvider = null;

    /**
     * Constructor
     * 
     * @param domain
     *          the editing domain
     * @param resource
     *          the resource to modify
     * @param collection
     *          the objects to be removed
     */
    public ResourceRemoveCommand(EditingDomain domain, FcoreResourceImpl resource, Collection<?> collection) {
        super(domain, resource.getContents(), collection);
        if (getDomain() instanceof AdapterFactoryEditingDomain) {
            _labelProvider = (IItemLabelProvider) ((AdapterFactoryEditingDomain) getDomain()).getAdapterFactory().adapt(getCollection().toArray()[0], IItemLabelProvider.class);
        }
        _resource = resource;
        setLabel(LABEL);
        setDescription(DESCRIPTION);
    }

    /**
     * @see org.eclipse.emf.edit.command.CommandActionDelegate#getImage()
     */
    public Object getImage() {
        return this._labelProvider != null ? this._labelProvider.getImage(getCollection().toArray()[0]) : null;
    }

    /**
     * @see org.eclipse.emf.edit.command.CommandActionDelegate#getText()
     */
    public String getText() {
        return this._labelProvider != null ? this._labelProvider.getText(getCollection().toArray()[0]) : null;
    }

    /**
     * @see org.eclipse.emf.edit.command.CommandActionDelegate#getToolTipText()
     */
    public String getToolTipText() {
        return getText();
    }

    @Override
    protected boolean prepare() {
        if (domain.isReadOnly(_resource)) {
            return false;
        }
        return super.prepare();
    }

}