com.seanchenxi.gwt.serenity.client.activity.mapper.ArticleActivityMapper.java Source code

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/*******************************************************************************
 * Copyright 2012 Xi CHEN
 *
 * 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 com.seanchenxi.gwt.serenity.client.activity.mapper;

import com.google.gwt.activity.shared.Activity;
import com.google.gwt.activity.shared.ActivityMapper;
import com.google.gwt.place.shared.Place;
import com.seanchenxi.gwt.serenity.client.SerenityFactory;
import com.seanchenxi.gwt.serenity.client.activity.ArticleActivity;
import com.seanchenxi.gwt.serenity.client.place.AboutPlace;
import com.seanchenxi.gwt.serenity.client.place.ArticlePlace;

public class ArticleActivityMapper implements ActivityMapper {

    private SerenityFactory clientFactory;

    public ArticleActivityMapper(SerenityFactory clientFactory) {
        this.clientFactory = clientFactory;
    }

    @Override
    public Activity getActivity(Place place) {
        String articleSlug = null;
        if (place instanceof ArticlePlace) {
            articleSlug = ((ArticlePlace) place).getSlug();
        } else if (place instanceof AboutPlace) {
            articleSlug = ((AboutPlace) place).getSlug();
        }
        if (articleSlug == null || articleSlug.isEmpty()) {
            return null;
        }
        return new ArticleActivity(articleSlug, clientFactory);
    }

}