us.shandian.blacklight.ui.directmessage.DirectMessageUserFragment.java Source code

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Here is the source code for us.shandian.blacklight.ui.directmessage.DirectMessageUserFragment.java

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/* 
 * Copyright (C) 2014 Peter Cai
 *
 * This file is part of BlackLight
 *
 * BlackLight is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * BlackLight is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with BlackLight.  If not, see <http://www.gnu.org/licenses/>.
 */

package us.shandian.blacklight.ui.directmessage;

import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;

import android.support.v4.widget.SwipeRefreshLayout;

import us.shandian.blacklight.R;
import us.shandian.blacklight.cache.directmessages.DirectMessagesUserApiCache;
import us.shandian.blacklight.ui.common.SwipeUpAndDownRefreshLayout;
import us.shandian.blacklight.support.AsyncTask;
import us.shandian.blacklight.support.Settings;
import us.shandian.blacklight.support.Utility;
import us.shandian.blacklight.support.adapter.DirectMessageUserAdapter;

public class DirectMessageUserFragment extends Fragment
        implements SwipeRefreshLayout.OnRefreshListener, AdapterView.OnItemClickListener {
    private DirectMessagesUserApiCache mApiCache;
    private ListView mList;
    private SwipeUpAndDownRefreshLayout mSwipeRefresh;
    private DirectMessageUserAdapter mAdapter;
    private boolean mRefreshing = false;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Share the view
        ViewGroup v = (ViewGroup) inflater.inflate(R.layout.home_timeline, null);

        mList = (ListView) v.findViewById(R.id.home_timeline);

        mSwipeRefresh = new SwipeUpAndDownRefreshLayout(getActivity());

        // Move child to SwipeRefreshLayout, and add SwipeRefreshLayout to root view
        v.removeViewInLayout(mList);
        v.addView(mSwipeRefresh, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        mSwipeRefresh.addView(mList, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

        mSwipeRefresh.setOnRefreshListener(this);
        mSwipeRefresh.setColorScheme(R.color.ptr_green, R.color.ptr_orange, R.color.ptr_red, R.color.ptr_blue);

        mApiCache = new DirectMessagesUserApiCache(getActivity());
        mAdapter = new DirectMessageUserAdapter(getActivity(), mApiCache.mUsers);
        mList.setAdapter(mAdapter);
        mList.setOnItemClickListener(this);

        mApiCache.loadFromCache();

        if (mApiCache.mUsers.getSize() == 0) {
            onRefresh();
        }

        return v;
    }

    @Override
    public void onHiddenChanged(boolean hidden) {
        super.onHiddenChanged(hidden);

        if (!hidden) {
            getActivity().getActionBar().setTitle(R.string.direct_message);
            resume();
        }
    }

    @Override
    public void onResume() {
        super.onResume();

        resume();
    }

    public void resume() {

        Settings settings = Settings.getInstance(getActivity());

        boolean fs = settings.getBoolean(Settings.FAST_SCROLL, false);
        mList.setFastScrollEnabled(fs);

        if (fs) {
            // Scroller
            new Thread(new Runnable() {
                @Override
                public void run() {
                    while (!Utility.changeFastScrollColor(mList, getResources().getColor(R.color.gray)))
                        ;
                }
            }).start();
        }
    }

    @Override
    public void onStop() {
        super.onStop();
        mApiCache.cache();
    }

    @Override
    public void onRefresh() {
        if (!mRefreshing) {
            new Refresher().execute(!mSwipeRefresh.isDown());
        }
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Intent i = new Intent();
        i.setAction(Intent.ACTION_MAIN);
        i.setClass(getActivity(), DirectMessageConversationActivity.class);
        i.putExtra("user", mApiCache.mUsers.get(position).user);
        startActivity(i);
    }

    private class Refresher extends AsyncTask<Boolean, Void, Boolean> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            mRefreshing = true;
            mSwipeRefresh.setRefreshing(true);
        }

        @Override
        protected Boolean doInBackground(Boolean... params) {
            if (params[0]) {
                mApiCache.mUsers.getList().clear();
            }

            mApiCache.load(params[0]);
            return params[0];
        }

        @Override
        protected void onPostExecute(Boolean result) {
            super.onPostExecute(result);

            mRefreshing = false;
            mSwipeRefresh.setRefreshing(false);

            if (result) {
                mAdapter.notifyDataSetChangedAndClear();
            } else {
                mAdapter.notifyDataSetChanged();
            }
        }
    }
}