Tusky-App-Android/app/src/main/java/com/keylesspalace/tusky/NotificationsFragment.java

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/* Copyright 2017 Andrew Dawson
*
* This file is part of Tusky.
*
* Tusky 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.
*
* Tusky 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 Tusky. If not, see
* <http://www.gnu.org/licenses/>. */
package com.keylesspalace.tusky;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.TabLayout;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.DividerItemDecoration;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.volley.AuthFailureError;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import org.json.JSONArray;
import org.json.JSONException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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public class NotificationsFragment extends SFragment implements
SwipeRefreshLayout.OnRefreshListener, StatusActionListener, FooterActionListener {
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private static final String TAG = "Notifications"; // logging tag
private SwipeRefreshLayout swipeRefreshLayout;
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private RecyclerView recyclerView;
private LinearLayoutManager layoutManager;
private EndlessOnScrollListener scrollListener;
private NotificationsAdapter adapter;
private TabLayout.OnTabSelectedListener onTabSelectedListener;
public static NotificationsFragment newInstance() {
NotificationsFragment fragment = new NotificationsFragment();
Bundle arguments = new Bundle();
fragment.setArguments(arguments);
return fragment;
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_timeline, container, false);
// Setup the SwipeRefreshLayout.
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Context context = getContext();
swipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.swipe_refresh_layout);
swipeRefreshLayout.setOnRefreshListener(this);
// Setup the RecyclerView.
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recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view);
recyclerView.setHasFixedSize(true);
layoutManager = new LinearLayoutManager(context);
recyclerView.setLayoutManager(layoutManager);
DividerItemDecoration divider = new DividerItemDecoration(
context, layoutManager.getOrientation());
Drawable drawable = ThemeUtils.getDrawable(context, R.attr.status_divider_drawable,
R.drawable.status_divider_dark);
divider.setDrawable(drawable);
recyclerView.addItemDecoration(divider);
scrollListener = new EndlessOnScrollListener(layoutManager) {
@Override
public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
NotificationsAdapter adapter = (NotificationsAdapter) view.getAdapter();
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Notification notification = adapter.getItem(adapter.getItemCount() - 2);
if (notification != null) {
sendFetchNotificationsRequest(notification.getId());
} else {
sendFetchNotificationsRequest();
}
}
};
recyclerView.addOnScrollListener(scrollListener);
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adapter = new NotificationsAdapter(this, this);
recyclerView.setAdapter(adapter);
TabLayout layout = (TabLayout) getActivity().findViewById(R.id.tab_layout);
onTabSelectedListener = new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {}
@Override
public void onTabUnselected(TabLayout.Tab tab) {}
@Override
public void onTabReselected(TabLayout.Tab tab) {
jumpToTop();
}
};
layout.addOnTabSelectedListener(onTabSelectedListener);
sendFetchNotificationsRequest();
return rootView;
}
@Override
public void onDestroyView() {
TabLayout tabLayout = (TabLayout) getActivity().findViewById(R.id.tab_layout);
tabLayout.removeOnTabSelectedListener(onTabSelectedListener);
super.onDestroyView();
}
private void jumpToTop() {
layoutManager.scrollToPosition(0);
scrollListener.reset();
}
private void sendFetchNotificationsRequest(final String fromId) {
String endpoint = getString(R.string.endpoint_notifications);
String url = "https://" + domain + endpoint;
if (fromId != null) {
url += "?max_id=" + fromId;
}
JsonArrayRequest request = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
try {
List<Notification> notifications = Notification.parse(response);
onFetchNotificationsSuccess(notifications, fromId);
} catch (JSONException e) {
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onFetchNotificationsFailure(e);
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
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onFetchNotificationsFailure(error);
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Bearer " + accessToken);
return headers;
}
};
VolleySingleton.getInstance(getContext()).addToRequestQueue(request);
}
private void sendFetchNotificationsRequest() {
sendFetchNotificationsRequest(null);
}
private static boolean findNotification(List<Notification> notifications, String id) {
for (Notification notification : notifications) {
if (notification.getId().equals(id)) {
return true;
}
}
return false;
}
private void onFetchNotificationsSuccess(List<Notification> notifications, String fromId) {
if (fromId != null) {
if (notifications.size() > 0 && !findNotification(notifications, fromId)) {
setFetchTimelineState(FooterViewHolder.State.LOADING);
adapter.addItems(notifications);
} else {
setFetchTimelineState(FooterViewHolder.State.END_OF_TIMELINE);
}
} else {
adapter.update(notifications);
}
swipeRefreshLayout.setRefreshing(false);
}
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private void onFetchNotificationsFailure(Exception exception) {
setFetchTimelineState(FooterViewHolder.State.RETRY);
swipeRefreshLayout.setRefreshing(false);
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Log.e(TAG, "Fetch failure: " + exception.getMessage());
}
private void setFetchTimelineState(FooterViewHolder.State state) {
adapter.setFooterState(state);
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RecyclerView.ViewHolder viewHolder =
recyclerView.findViewHolderForAdapterPosition(adapter.getItemCount() - 1);
if (viewHolder != null) {
FooterViewHolder holder = (FooterViewHolder) viewHolder;
holder.setState(state);
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}
}
public void onRefresh() {
sendFetchNotificationsRequest();
}
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public void onLoadMore() {
Notification notification = adapter.getItem(adapter.getItemCount() - 2);
if (notification != null) {
sendFetchNotificationsRequest(notification.getId());
} else {
sendFetchNotificationsRequest();
}
}
public void onReply(int position) {
Notification notification = adapter.getItem(position);
super.reply(notification.getStatus());
}
public void onReblog(boolean reblog, int position) {
Notification notification = adapter.getItem(position);
super.reblog(notification.getStatus(), reblog, adapter, position);
}
public void onFavourite(boolean favourite, int position) {
Notification notification = adapter.getItem(position);
super.favourite(notification.getStatus(), favourite, adapter, position);
}
public void onMore(View view, int position) {
Notification notification = adapter.getItem(position);
super.more(notification.getStatus(), view, adapter, position);
}
public void onViewMedia(String url, Status.MediaAttachment.Type type) {
super.viewMedia(url, type);
}
public void onViewThread(int position) {
Notification notification = adapter.getItem(position);
super.viewThread(notification.getStatus());
}
public void onViewTag(String tag) {
super.viewTag(tag);
}
public void onViewAccount(String id, String username) {
super.viewAccount(id, username);
}
public void onViewAccount(int position) {
Status status = adapter.getItem(position).getStatus();
String id = status.getAccountId();
String username = status.getUsername();
super.viewAccount(id, username);
}
}