/*******************************************************************************
 * Copyright (c) 2007, 2011 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.che.ide.ext.java.jdt.templates;

import org.eclipse.che.ide.ext.java.jdt.templates.api.TemplateContext;
import org.eclipse.che.ide.ext.java.jdt.templates.api.TemplateVariable;
import org.eclipse.che.ide.ext.java.jdt.templates.api.TemplateVariableResolver;

import java.util.List;

/**
 * Resolves to either a simple type name and an import or a fully qualified type name if a conflicting import exists.
 *
 * @since 3.4
 */
public class TypeResolver extends TemplateVariableResolver {

    private final String fDefaultType;

    /** Default ctor for instantiation by the extension point. */
    public TypeResolver() {
        this("java.lang.Object"); //$NON-NLS-1$
    }

    TypeResolver(String defaultType) {
        fDefaultType = defaultType;
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.jface.text.templates.TemplateVariableResolver#resolve(org.eclipse.jface.text.templates.TemplateVariable,
     * org.eclipse.jface.text.templates.TemplateContext)
     */
    @Override
    public void resolve(TemplateVariable variable, TemplateContext context) {
        List<String> params = variable.getVariableType().getParams();
        String param;
        if (params.size() == 0)
            param = fDefaultType;
        else
            param = params.get(0);

        JavaContext jc = (JavaContext)context;
        MultiVariable mv = (MultiVariable)variable;

        String reference = jc.addImport(param);
        mv.setValue(reference);
        mv.setUnambiguous(true);
    }

}