com.bdenney.locl.fragment.VenuePostsFragment.java Source code

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Here is the source code for com.bdenney.locl.fragment.VenuePostsFragment.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Tumblr
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.bdenney.locl.fragment;

import android.app.ActionBar;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.TextView;
import com.bdenney.locl.R;
import com.bdenney.locl.activity.LightboxActivity;
import com.bdenney.locl.adapter.PostAdapter;
import com.bdenney.locl.api.TumblrClient;
import com.bdenney.locl.model.Venue;
import com.etsy.android.grid.StaggeredGridView;
import com.tumblr.jumblr.types.PhotoPost;
import com.tumblr.jumblr.types.Post;

import java.util.List;

public class VenuePostsFragment extends Fragment implements PostAdapter.OnReachedEndListener {
    public static final String ARGS_VENUE = "args_venue";
    private TumblrClient mTumblrClient = new TumblrClient();
    private View mRoot;
    private StaggeredGridView mGrid;
    private TextView mEmptyTextView;
    private PostAdapter mAdapter;

    public static VenuePostsFragment create(final Venue venue) {
        VenuePostsFragment fragment = new VenuePostsFragment();
        final Bundle args = new Bundle();
        args.putParcelable(ARGS_VENUE, venue);
        fragment.setArguments(args);
        return fragment;
    }

    public Venue getVenue() {
        return getArguments().getParcelable(ARGS_VENUE);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        mRoot = inflater.inflate(R.layout.fragment_venue_posts, container, false);
        if (mRoot != null) {
            mGrid = (StaggeredGridView) mRoot.findViewById(R.id.grid);
            mGrid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    PostAdapter adapter = (PostAdapter) mGrid.getAdapter();
                    PhotoPost post = (PhotoPost) adapter.getItem(position);

                    final Intent intent = new Intent(getActivity(), LightboxActivity.class);
                    intent.putExtra(LightboxActivity.EXTRA_URL, post.getPhotos().get(0).getOriginalSize().getUrl());
                    intent.putExtra(LightboxActivity.EXTRA_BLOG_NAME, post.getBlogName());
                    intent.putExtra(LightboxActivity.EXTRA_POST_ID, post.getId());
                    startActivity(intent);
                }
            });
            mEmptyTextView = (TextView) mRoot.findViewById(R.id.posts_empty);

            if (savedInstanceState == null || mAdapter == null) {
                new PostLoadTask(0).execute();
            }

            setActionBarTitle(getVenue().getName());
        }
        return mRoot;
    }

    private void setActionBarTitle(final String title) {
        ActionBar actionBar = getActivity().getActionBar();
        if (actionBar != null) {
            actionBar.setTitle(title);
        }
    }

    private void showEmpty() {
        mEmptyTextView.setVisibility(View.VISIBLE);
        mRoot.setBackgroundResource(R.color.error_red);
        mGrid.setVisibility(View.GONE);
    }

    @Override
    public void onReachedEnd(long timestamp) {
        new PostLoadTask(timestamp).execute();
    }

    private class PostLoadTask extends AsyncTask<Void, Void, List<Post>> {

        private long mBefore;

        public PostLoadTask(final long before) {
            mBefore = before;
        }

        @Override
        protected List<Post> doInBackground(Void... params) {
            return mTumblrClient.getVenuePosts(getVenue(), mBefore);
        }

        @Override
        protected void onPostExecute(List<Post> posts) {
            if (mAdapter == null) {
                mAdapter = new PostAdapter(getActivity(), mGrid, posts, VenuePostsFragment.this);
                mGrid.setAdapter(mAdapter);
            } else {
                mAdapter.addPosts(posts);
            }

            if (mAdapter == null || mAdapter.getCount() == 0) {
                showEmpty();
            }
        }
    }
}