/*
 * Copyright 2009-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.groovy.eclipse.adapters;

import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.eclipse.core.GroovyCore;
import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.ui.IFileEditorInput;

/**
 * This class will take an FileEditorInput and adapt it to varios Groovy friendly
 * classes / interfaces.
 *
 * @author David Kerber
 */
public class GroovyIFileEditorInputAdapterFactory implements IAdapterFactory {

    private static final Class<?>[] classes = new Class[] {ClassNode.class};

    @SuppressWarnings({"rawtypes", "unchecked"})
    public Object getAdapter(Object adaptableObject, Class adapterType) {
        Object returnValue = null;
        if ((ClassNode.class.equals(adapterType) || ClassNode[].class.equals(adapterType)) && adaptableObject instanceof IFileEditorInput) {
            try {
                IFileEditorInput fileEditor = (IFileEditorInput) adaptableObject;
                returnValue = fileEditor.getFile().getAdapter(adapterType);
            } catch (Exception ex) {
                GroovyCore.logException("error adapting file to ClassNode", ex);
            }
        }
        return returnValue;
    }

    public Class<?>[] getAdapterList() {
        return classes;
    }
}