/*=============================================================================#
 # Copyright (c) 2009-2016 Stephan Wahlbrink (WalWare.de) 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:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.ecommons.ltk.core.impl;

import org.eclipse.core.filesystem.IFileStore;

import de.walware.ecommons.text.ISourceFragment;

import de.walware.ecommons.ltk.ISourceUnitFactory;
import de.walware.ecommons.ltk.LTK;
import de.walware.ecommons.ltk.core.model.ISourceUnit;
import de.walware.ecommons.ltk.core.model.IWorkspaceSourceUnit;


/**
 * Abstract factory for {@link LTK#EDITOR_CONTEXT}.
 */
public abstract class AbstractEditorSourceUnitFactory implements ISourceUnitFactory {
	
	
	@Override
	public String createId(final Object from) {
		if (from instanceof IFileStore) {
			return AbstractFilePersistenceSourceUnitFactory.createResourceId(((IFileStore) from).toURI());
		}
		if (from instanceof ISourceFragment) {
			return ((ISourceFragment) from).getId();
		}
		return null;
	}
	
	@Override
	public ISourceUnit createSourceUnit(final String id, final Object from) {
		if (from instanceof IWorkspaceSourceUnit) {
			return createSourceUnit(id, (IWorkspaceSourceUnit) from);
		}
		if (from instanceof IFileStore) {
			return createSourceUnit(id, (IFileStore) from);
		}
		if (from instanceof ISourceFragment) {
			return createSourceUnit(id, (ISourceFragment) from);
		}
		return null;
	}
	
	
	protected abstract ISourceUnit createSourceUnit(final String id, final IWorkspaceSourceUnit su);
	
	protected abstract ISourceUnit createSourceUnit(final String id, final IFileStore file);
	
	protected ISourceUnit createSourceUnit(final String id, final ISourceFragment fragment) {
		return null;
	}
	
}