ReaderPostList.java

package kr.kdev.dg1s.biowiki.models;

import org.json.JSONArray;
import org.json.JSONObject;

import java.util.ArrayList;

/**
 * Created by nbradbury on 6/27/13.
 */
public class ReaderPostList extends ArrayList<ReaderPost> {

    public static ReaderPostList fromJson(JSONObject json) {
        if (json == null)
            throw new IllegalArgumentException("null json post list");

        ReaderPostList posts = new ReaderPostList();
        JSONArray jsonPosts = json.optJSONArray("posts");
        if (jsonPosts != null) {
            for (int i = 0; i < jsonPosts.length(); i++)
                posts.add(ReaderPost.fromJson(jsonPosts.optJSONObject(i)));
        }

        return posts;
    }

    private int indexOfPost(long blogId, long postId) {
        for (int i = 0; i < size(); i++) {
            if (this.get(i).blogId == blogId && this.get(i).postId == postId)
                return i;
        }
        return -1;
    }

    public int indexOfPost(ReaderPost post) {
        if (post == null)
            return -1;
        return indexOfPost(post.blogId, post.postId);
    }

    /*
     * does passed list contain the same posts as this list?
     */
    public boolean isSameList(ReaderPostList posts) {
        if (posts == null || posts.size() != this.size())
            return false;

        for (ReaderPost post : posts) {
            if (indexOfPost(post.blogId, post.postId) == -1)
                return false;
        }

        return true;
    }
}