/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you 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.apache.myfaces.test.mock;

import java.util.Locale;

import javax.faces.application.ViewHandler;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.render.RenderKitFactory;

/**
 * <p>Mock implementation of <code>ViewHandler</code>.</p>
 *
 * $Id$
 */

public class MockViewHandler extends ViewHandler {


    // ------------------------------------------------------------ Constructors


    /**
     * <p>Construct a default instance.</p>
     */
    public MockViewHandler() {
    }


    // ----------------------------------------------------- Mock Object Methods


    // ------------------------------------------------------ Instance Variables


    // ----------------------------------------------------- ViewHandler Methods


    /** {@inheritDoc} */
    public Locale calculateLocale(FacesContext context) {

        Locale locale = context.getApplication().getDefaultLocale();
        if (locale == null) {
            locale = Locale.getDefault();
        }
        return locale;

    }


    /** {@inheritDoc} */
    public String calculateRenderKitId(FacesContext context) {

        String renderKitId = context.getApplication().getDefaultRenderKitId();
        if (renderKitId == null) {
            renderKitId = RenderKitFactory.HTML_BASIC_RENDER_KIT;
        }
        return renderKitId;

    }


    /** {@inheritDoc} */
    public UIViewRoot createView(FacesContext context, String viewId) {

        // Save locale and renderKitId from previous view (if any), per spec
        Locale locale = null;
        String renderKitId = null;
        if (context.getViewRoot() != null) {
            locale = context.getViewRoot().getLocale();
            renderKitId = context.getViewRoot().getRenderKitId();
        }

        // Configure a new UIViewRoot instance
        UIViewRoot view = new UIViewRoot();
        view.setViewId(viewId);
        if (locale != null) {
            view.setLocale(locale);
        } else {
            view.setLocale
              (context.getApplication().getViewHandler().calculateLocale(context));
        }
        if (renderKitId != null) {
            view.setRenderKitId(renderKitId);
        } else {
            view.setRenderKitId
              (context.getApplication().getViewHandler().calculateRenderKitId(context));
        }

        // Return the configured instance
        return view;

    }


    /** {@inheritDoc} */
    public String getActionURL(FacesContext context, String viewId) {

        return FacesContext.getCurrentInstance().getExternalContext().
                getRequestContextPath() + viewId;

    }


    /** {@inheritDoc} */
    public String getResourceURL(FacesContext context, String path) {

        return FacesContext.getCurrentInstance().getExternalContext().
                getRequestContextPath() + path;

    }


    /** {@inheritDoc} */
    public void renderView(FacesContext context, UIViewRoot view) {

        throw new UnsupportedOperationException();

    }


    /** {@inheritDoc} */
    public UIViewRoot restoreView(FacesContext context, String viewId) {

        throw new UnsupportedOperationException();

    }


    /** {@inheritDoc} */
    public void writeState(FacesContext context) {

    }


}