org.eclipse.osbp.ecview.dsl/src/org/eclipse/osbp/ecview/dsl/scope/TypedBindableScope.java

/**
 * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *         Florian Pirchner - Initial implementation
 */

package org.eclipse.osbp.ecview.dsl.scope;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.osbp.ecview.semantic.uimodel.UiBeanSlot;
import org.eclipse.osbp.ecview.semantic.uimodel.UiView;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.impl.AbstractScope;

public class TypedBindableScope extends AbstractScope {

	private EObject context;

	protected TypedBindableScope(EObject context) {
		super(IScope.NULLSCOPE, true);
		this.context = context;
	}

	@Override
	protected Iterable<IEObjectDescription> getAllLocalElements() {
		List<IEObjectDescription> result = new ArrayList<IEObjectDescription>();

		UiView view = findView(context);
		if (view != null) {
			TreeIterator<EObject> iterator = EcoreUtil.getAllProperContents(
					view, false);
			while (iterator.hasNext()) {
				EObject object = iterator.next();
				if (object instanceof UiBeanSlot) {
					UiBeanSlot bindable = (UiBeanSlot) object;
					result.add(EObjectDescription.create(bindable.getName(),
							bindable));
				}
			}

		}

		return result;
	}

	private UiView findView(EObject def) {
		UiView result = null;
		while (def.eContainer() != null) {
			def = def.eContainer();
			if (def instanceof UiView) {
				result = (UiView) def;
				break;
			}
		}
		return result;
	}
}