1/*
2 * Copyright (c) 2018, Daniel Gultsch All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation and/or
12 * other materials provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors
15 * may be used to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30package eu.siacs.conversations.ui;
31
32import android.app.Activity;
33import android.app.Fragment;
34import android.databinding.DataBindingUtil;
35import android.graphics.Canvas;
36import android.graphics.Paint;
37import android.os.Bundle;
38import android.support.design.widget.Snackbar;
39import android.support.v7.widget.LinearLayoutManager;
40import android.support.v7.widget.RecyclerView;
41import android.support.v7.widget.helper.ItemTouchHelper;
42import android.util.Log;
43import android.view.LayoutInflater;
44import android.view.View;
45import android.view.ViewGroup;
46
47import java.util.ArrayList;
48import java.util.List;
49
50import eu.siacs.conversations.Config;
51import eu.siacs.conversations.R;
52import eu.siacs.conversations.databinding.FragmentConversationsOverviewBinding;
53import eu.siacs.conversations.entities.Conversation;
54import eu.siacs.conversations.ui.adapter.ConversationAdapter;
55import eu.siacs.conversations.ui.interfaces.OnConversationArchived;
56import eu.siacs.conversations.ui.interfaces.OnConversationSelected;
57import eu.siacs.conversations.ui.util.Color;
58import eu.siacs.conversations.ui.util.PendingActionHelper;
59import eu.siacs.conversations.ui.util.PendingItem;
60import eu.siacs.conversations.ui.util.ScrollState;
61import eu.siacs.conversations.utils.ThemeHelper;
62
63import static android.support.v7.widget.helper.ItemTouchHelper.LEFT;
64import static android.support.v7.widget.helper.ItemTouchHelper.RIGHT;
65
66public class ConversationsOverviewFragment extends XmppFragment {
67
68 private static final String STATE_SCROLL_POSITION = ConversationsOverviewFragment.class.getName()+".scroll_state";
69
70 private final List<Conversation> conversations = new ArrayList<>();
71 private final PendingItem<Conversation> swipedConversation = new PendingItem<>();
72 private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
73 private FragmentConversationsOverviewBinding binding;
74 private ConversationAdapter conversationsAdapter;
75 private XmppActivity activity;
76 private PendingActionHelper pendingActionHelper = new PendingActionHelper();
77
78 private ItemTouchHelper.SimpleCallback callback = new ItemTouchHelper.SimpleCallback(0,LEFT|RIGHT) {
79 @Override
80 public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
81 //todo maybe we can manually changing the position of the conversation
82 return false;
83 }
84
85 @Override
86 public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder,
87 float dX, float dY, int actionState, boolean isCurrentlyActive) {
88 super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
89 if(actionState != ItemTouchHelper.ACTION_STATE_IDLE){
90 Paint paint = new Paint();
91 paint.setColor(Color.get(activity,R.attr.conversations_overview_background));
92 paint.setStyle(Paint.Style.FILL);
93 c.drawRect(viewHolder.itemView.getLeft(),viewHolder.itemView.getTop()
94 ,viewHolder.itemView.getRight(),viewHolder.itemView.getBottom(), paint);
95 }
96 }
97
98 @Override
99 public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
100 super.clearView(recyclerView, viewHolder);
101 viewHolder.itemView.setAlpha(1f);
102 }
103
104 @Override
105 public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
106 pendingActionHelper.execute();
107 int position = viewHolder.getLayoutPosition();
108 try {
109 swipedConversation.push(conversations.get(position));
110 } catch (IndexOutOfBoundsException e) {
111 return;
112 }
113 conversationsAdapter.remove(swipedConversation.peek(), position);
114 activity.xmppConnectionService.markRead(swipedConversation.peek());
115
116 if (position == 0 && conversationsAdapter.getItemCount() == 0) {
117 final Conversation c = swipedConversation.pop();
118 activity.xmppConnectionService.archiveConversation(c);
119 return;
120 }
121 final boolean formerlySelected = ConversationFragment.getConversation(getActivity()) == swipedConversation.peek();
122 if (activity instanceof OnConversationArchived) {
123 ((OnConversationArchived) activity).onConversationArchived(swipedConversation.peek());
124 }
125 boolean isMuc = swipedConversation.peek().getMode() == Conversation.MODE_MULTI;
126 int title = isMuc ? R.string.title_undo_swipe_out_muc : R.string.title_undo_swipe_out_conversation;
127
128 pendingActionHelper.push(() -> {
129 Conversation c = swipedConversation.pop();
130 if(c != null){
131 if (!c.isRead() && c.getMode() == Conversation.MODE_SINGLE) {
132 return;
133 }
134 activity.xmppConnectionService.archiveConversation(c);
135 }
136 });
137 final Snackbar snackbar = Snackbar.make(binding.list, title, 5000)
138 .setAction(R.string.undo, v -> {
139 pendingActionHelper.undo();
140 Conversation c = swipedConversation.pop();
141 conversationsAdapter.insert(c, position);
142 if (formerlySelected) {
143 if (activity instanceof OnConversationSelected) {
144 ((OnConversationSelected) activity).onConversationSelected(c);
145 }
146 }
147 LinearLayoutManager layoutManager = (LinearLayoutManager) binding.list.getLayoutManager();
148 if (position > layoutManager.findLastVisibleItemPosition()) {
149 binding.list.smoothScrollToPosition(position);
150 }
151 })
152 .addCallback(new Snackbar.Callback() {
153 @Override
154 public void onDismissed(Snackbar transientBottomBar, int event) {
155 switch (event) {
156 case DISMISS_EVENT_SWIPE:
157 case DISMISS_EVENT_TIMEOUT:
158 pendingActionHelper.execute();
159 break;
160 }
161 }
162 });
163 ThemeHelper.fixTextSize(snackbar);
164 snackbar.show();
165 }
166 };
167
168 private ItemTouchHelper touchHelper = new ItemTouchHelper(callback);
169
170 public static Conversation getSuggestion(Activity activity) {
171 final Conversation exception;
172 Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
173 if (fragment != null && fragment instanceof ConversationsOverviewFragment) {
174 exception = ((ConversationsOverviewFragment) fragment).swipedConversation.peek();
175 } else {
176 exception = null;
177 }
178 return getSuggestion(activity, exception);
179 }
180
181 public static Conversation getSuggestion(Activity activity, Conversation exception) {
182 Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
183 if (fragment != null && fragment instanceof ConversationsOverviewFragment) {
184 List<Conversation> conversations = ((ConversationsOverviewFragment) fragment).conversations;
185 if (conversations.size() > 0) {
186 Conversation suggestion = conversations.get(0);
187 if (suggestion == exception) {
188 if (conversations.size() > 1) {
189 return conversations.get(1);
190 }
191 } else {
192 return suggestion;
193 }
194 }
195 }
196 return null;
197
198 }
199
200 @Override
201 public void onActivityCreated(Bundle savedInstanceState) {
202 super.onActivityCreated(savedInstanceState);
203 if (savedInstanceState == null) {
204 return;
205 }
206 pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
207 }
208
209 @Override
210 public void onAttach(Activity activity) {
211 super.onAttach(activity);
212 if (activity instanceof XmppActivity) {
213 this.activity = (XmppActivity) activity;
214 } else {
215 throw new IllegalStateException("Trying to attach fragment to activity that is not an XmppActivity");
216 }
217 }
218
219 @Override
220 public void onPause() {
221 Log.d(Config.LOGTAG,"ConversationsOverviewFragment.onPause()");
222 pendingActionHelper.execute();
223 super.onPause();
224 }
225
226 @Override
227 public void onDetach() {
228 super.onDetach();
229 this.activity = null;
230 }
231
232 @Override
233 public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
234 Log.d(Config.LOGTAG, "onCreateView");
235 this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversations_overview, container, false);
236 this.binding.fab.setOnClickListener((view) -> StartConversationActivity.launch(getActivity()));
237
238 this.conversationsAdapter = new ConversationAdapter(this.activity, this.conversations);
239 this.conversationsAdapter.setConversationClickListener((view, conversation) -> {
240 if (activity instanceof OnConversationSelected) {
241 ((OnConversationSelected) activity).onConversationSelected(conversation);
242 } else {
243 Log.w(ConversationsOverviewFragment.class.getCanonicalName(), "Activity does not implement OnConversationSelected");
244 }
245 });
246 this.binding.list.setAdapter(this.conversationsAdapter);
247 this.binding.list.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.VERTICAL,false));
248 this.touchHelper.attachToRecyclerView(this.binding.list);
249 return binding.getRoot();
250 }
251
252 @Override
253 public void onBackendConnected() {
254 refresh();
255 }
256
257 @Override
258 public void onSaveInstanceState(Bundle bundle) {
259 super.onSaveInstanceState(bundle);
260 ScrollState scrollState = getScrollState();
261 if (scrollState != null) {
262 bundle.putParcelable(STATE_SCROLL_POSITION, scrollState);
263 }
264 }
265
266 private ScrollState getScrollState() {
267 if (this.binding == null) {
268 return null;
269 }
270 LinearLayoutManager layoutManager = (LinearLayoutManager) this.binding.list.getLayoutManager();
271 int position = layoutManager.findFirstVisibleItemPosition();
272 final View view = this.binding.list.getChildAt(0);
273 if (view != null) {
274 return new ScrollState(position,view.getTop());
275 } else {
276 return new ScrollState(position, 0);
277 }
278 }
279
280 @Override
281 public void onStart() {
282 super.onStart();
283 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onStart()");
284 if (activity.xmppConnectionService != null) {
285 refresh();
286 }
287 }
288
289 @Override
290 public void onResume() {
291 super.onResume();
292 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onResume()");
293 }
294
295 @Override
296 void refresh() {
297 if (this.binding == null || this.activity == null) {
298 Log.d(Config.LOGTAG,"ConversationsOverviewFragment.refresh() skipped updated because view binding or activity was null");
299 return;
300 }
301 this.activity.xmppConnectionService.populateWithOrderedConversations(this.conversations);
302 Conversation removed = this.swipedConversation.peek();
303 if (removed != null) {
304 if (removed.isRead()) {
305 this.conversations.remove(removed);
306 } else {
307 pendingActionHelper.execute();
308 }
309 }
310 this.conversationsAdapter.notifyDataSetChanged();
311 ScrollState scrollState = pendingScrollState.pop();
312 if (scrollState != null) {
313 setScrollPosition(scrollState);
314 }
315 }
316
317 private void setScrollPosition(ScrollState scrollPosition) {
318 if (scrollPosition != null) {
319 LinearLayoutManager layoutManager = (LinearLayoutManager) binding.list.getLayoutManager();
320 layoutManager.scrollToPositionWithOffset(scrollPosition.position, scrollPosition.offset);
321 }
322 }
323}