/*
* Firetweet - Twitter client for Android
*
* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.getlantern.firetweet.fragment.support;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.support.v7.widget.FixedLinearLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView.OnScrollListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.squareup.otto.Bus;
import org.getlantern.firetweet.R;
import org.getlantern.firetweet.adapter.AbsActivitiesAdapter;
import org.getlantern.firetweet.adapter.AbsActivitiesAdapter.ActivityAdapterListener;
import org.getlantern.firetweet.adapter.decorator.DividerItemDecoration;
import org.getlantern.firetweet.app.FiretweetApplication;
import org.getlantern.firetweet.fragment.iface.RefreshScrollTopInterface;
import org.getlantern.firetweet.model.ParcelableActivity;
import org.getlantern.firetweet.util.AsyncTwitterWrapper;
import org.getlantern.firetweet.util.SimpleDrawerCallback;
import org.getlantern.firetweet.util.ThemeUtils;
import org.getlantern.firetweet.util.Utils;
import org.getlantern.firetweet.view.HeaderDrawerLayout.DrawerCallback;
import org.getlantern.firetweet.view.holder.GapViewHolder;
/**
* Created by mariotaku on 14/11/5.
*/
public abstract class AbsActivitiesFragment<Data> extends BaseSupportFragment implements LoaderCallbacks<Data>,
OnRefreshListener, DrawerCallback, RefreshScrollTopInterface, ActivityAdapterListener {
private final Object mStatusesBusCallback;
protected AbsActivitiesFragment() {
mStatusesBusCallback = createMessageBusCallback();
}
private View mContentView;
private SharedPreferences mPreferences;
private View mProgressContainer;
private SwipeRefreshLayout mSwipeRefreshLayout;
private RecyclerView mRecyclerView;
private AbsActivitiesAdapter<Data> mAdapter;
private SimpleDrawerCallback mDrawerCallback;
private OnScrollListener mOnScrollListener = new OnScrollListener() {
private int mScrollState;
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
mScrollState = newState;
}
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
final LinearLayoutManager layoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
if (isRefreshing()) return;
if (mAdapter.isLoadMoreIndicatorVisible() && mScrollState != RecyclerView.SCROLL_STATE_IDLE
&& layoutManager.findLastVisibleItemPosition() == mAdapter.getItemCount() - 1) {
onLoadMoreStatuses();
}
}
};
@Override
public boolean canScroll(float dy) {
return mDrawerCallback.canScroll(dy);
}
@Override
public void cancelTouch() {
mDrawerCallback.cancelTouch();
}
@Override
public void fling(float velocity) {
mDrawerCallback.fling(velocity);
}
@Override
public boolean isScrollContent(float x, float y) {
return mDrawerCallback.isScrollContent(x, y);
}
@Override
public void onGapClick(GapViewHolder holder, int position) {
final ParcelableActivity activity = mAdapter.getActivity(position);
final long[] accountIds = {activity.account_id};
final long[] maxIds = {activity.min_position};
getActivities(accountIds, maxIds, null);
}
@Override
public void scrollBy(float dy) {
mDrawerCallback.scrollBy(dy);
}
@Override
public boolean shouldLayoutHeaderBottom() {
return mDrawerCallback.shouldLayoutHeaderBottom();
}
@Override
public void topChanged(int offset) {
mDrawerCallback.topChanged(offset);
}
public AbsActivitiesAdapter<Data> getAdapter() {
return mAdapter;
}
public SharedPreferences getSharedPreferences() {
if (mPreferences != null) return mPreferences;
return mPreferences = getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE);
}
public abstract int getActivities(long[] accountIds, long[] maxIds, long[] sinceIds);
public boolean isRefreshing() {
return mSwipeRefreshLayout.isRefreshing();
}
public void setRefreshing(boolean refreshing) {
mSwipeRefreshLayout.setRefreshing(refreshing);
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_recycler_view, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final View view = getView();
if (view == null) throw new AssertionError();
final Context context = view.getContext();
final boolean compact = Utils.isCompactCards(context);
mDrawerCallback = new SimpleDrawerCallback(mRecyclerView);
mSwipeRefreshLayout.setOnRefreshListener(this);
mSwipeRefreshLayout.setColorSchemeColors(ThemeUtils.getUserAccentColor(context));
mAdapter = onCreateAdapter(context, compact);
mAdapter.setLoadMoreIndicatorVisible(true);
mAdapter.setListener(this);
final LinearLayoutManager layoutManager = new FixedLinearLayoutManager(context);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(layoutManager);
if (compact) {
mRecyclerView.addItemDecoration(new DividerItemDecoration(context, layoutManager.getOrientation()));
}
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.setOnScrollListener(mOnScrollListener);
getLoaderManager().initLoader(0, getArguments(), this);
setListShown(false);
}
@Override
public void onStart() {
super.onStart();
final Bus bus = FiretweetApplication.getInstance(getActivity()).getMessageBus();
bus.register(mStatusesBusCallback);
}
@Override
public void onStop() {
final Bus bus = FiretweetApplication.getInstance(getActivity()).getMessageBus();
bus.unregister(mStatusesBusCallback);
super.onStop();
}
@Override
public void onLoadFinished(Loader<Data> loader, Data data) {
setRefreshing(false);
mAdapter.setData(data);
setListShown(true);
}
@Override
public void onLoaderReset(Loader<Data> loader) {
}
@Override
public void onRefresh() {
triggerRefresh();
}
@Override
public void onBaseViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onBaseViewCreated(view, savedInstanceState);
mContentView = view.findViewById(R.id.fragment_content);
mProgressContainer = view.findViewById(R.id.progress_container);
mSwipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_layout);
mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
}
@Override
protected void fitSystemWindows(Rect insets) {
super.fitSystemWindows(insets);
mContentView.setPadding(insets.left, insets.top, insets.right, insets.bottom);
}
@Override
public boolean scrollToStart() {
final AsyncTwitterWrapper twitter = getTwitterWrapper();
final int tabPosition = getTabPosition();
if (twitter != null && tabPosition != -1) {
twitter.clearUnreadCountAsync(tabPosition);
}
mRecyclerView.smoothScrollToPosition(0);
return true;
}
protected abstract long[] getAccountIds();
protected Data getAdapterData() {
return mAdapter.getData();
}
protected void setAdapterData(Data data) {
mAdapter.setData(data);
}
protected Object createMessageBusCallback() {
return new StatusesBusCallback();
}
protected abstract AbsActivitiesAdapter<Data> onCreateAdapter(Context context, boolean compact);
protected abstract void onLoadMoreStatuses();
private void setListShown(boolean shown) {
mProgressContainer.setVisibility(shown ? View.GONE : View.VISIBLE);
mSwipeRefreshLayout.setVisibility(shown ? View.VISIBLE : View.GONE);
}
protected final class StatusesBusCallback {
protected StatusesBusCallback() {
}
}
}