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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.incallui.rtt.impl;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.dialer.common.LogUtil;
import com.android.dialer.rtt.RttTranscript;
import com.android.dialer.rtt.RttTranscriptMessage;
import java.util.ArrayList;
import java.util.List;
/** Adapter class for holding RTT chat data. */
public class RttChatAdapter extends RecyclerView.Adapter<RttChatMessageViewHolder> {
private Drawable avatarDrawable;
interface MessageListener {
void onUpdateRemoteMessage(int position);
void onUpdateLocalMessage(int position);
}
private final Context context;
private List<RttChatMessage> rttMessages = new ArrayList<>();
private int lastIndexOfLocalMessage = -1;
private final MessageListener messageListener;
RttChatAdapter(Context context, MessageListener listener) {
this.context = context;
this.messageListener = listener;
}
@Override
public RttChatMessageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(context);
View view = layoutInflater.inflate(R.layout.rtt_chat_list_item, parent, false);
return new RttChatMessageViewHolder(view);
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
@Override
public void onBindViewHolder(RttChatMessageViewHolder rttChatMessageViewHolder, int i) {
boolean isSameGroup = false;
if (i > 0) {
isSameGroup = rttMessages.get(i).isRemote == rttMessages.get(i - 1).isRemote;
}
rttChatMessageViewHolder.setMessage(rttMessages.get(i), isSameGroup, avatarDrawable);
}
@Override
public int getItemCount() {
return rttMessages.size();
}
private void updateCurrentLocalMessage(String newMessage) {
RttChatMessage rttChatMessage = null;
if (lastIndexOfLocalMessage >= 0) {
rttChatMessage = rttMessages.get(lastIndexOfLocalMessage);
}
if (rttChatMessage == null || rttChatMessage.isFinished()) {
rttChatMessage = new RttChatMessage();
rttChatMessage.append(newMessage);
rttMessages.add(rttChatMessage);
lastIndexOfLocalMessage = rttMessages.size() - 1;
notifyItemInserted(lastIndexOfLocalMessage);
} else {
rttChatMessage.append(newMessage);
// Clear empty message bubble.
if (TextUtils.isEmpty(rttChatMessage.getContent())) {
rttMessages.remove(lastIndexOfLocalMessage);
notifyItemRemoved(lastIndexOfLocalMessage);
lastIndexOfLocalMessage = -1;
} else {
notifyItemChanged(lastIndexOfLocalMessage);
}
}
}
private void updateCurrentRemoteMessage(String newMessage) {
RttChatMessage.updateRemoteRttChatMessage(rttMessages, newMessage);
lastIndexOfLocalMessage = RttChatMessage.getLastIndexLocalMessage(rttMessages);
notifyDataSetChanged();
}
void addLocalMessage(String message) {
updateCurrentLocalMessage(message);
if (messageListener != null) {
messageListener.onUpdateLocalMessage(lastIndexOfLocalMessage);
}
}
void submitLocalMessage() {
LogUtil.enterBlock("RttChatAdapater.submitLocalMessage");
rttMessages.get(lastIndexOfLocalMessage).finish();
notifyItemChanged(lastIndexOfLocalMessage);
lastIndexOfLocalMessage = -1;
}
String computeChangeOfLocalMessage(String newMessage) {
RttChatMessage rttChatMessage = null;
if (lastIndexOfLocalMessage >= 0) {
rttChatMessage = rttMessages.get(lastIndexOfLocalMessage);
}
if (rttChatMessage == null || rttChatMessage.isFinished()) {
return newMessage;
} else {
return RttChatMessage.computeChangedString(rttChatMessage.getContent(), newMessage);
}
}
void addRemoteMessage(String message) {
if (TextUtils.isEmpty(message)) {
return;
}
updateCurrentRemoteMessage(message);
if (messageListener != null) {
messageListener.onUpdateRemoteMessage(RttChatMessage.getLastIndexRemoteMessage(rttMessages));
}
}
/**
* Retrieve last local message and update the index. This is used when deleting to previous
* message bubble.
*/
@Nullable
String retrieveLastLocalMessage() {
lastIndexOfLocalMessage = RttChatMessage.getLastIndexLocalMessage(rttMessages);
if (lastIndexOfLocalMessage >= 0) {
RttChatMessage rttChatMessage = rttMessages.get(lastIndexOfLocalMessage);
rttChatMessage.unfinish();
return rttChatMessage.getContent();
} else {
return null;
}
}
void setAvatarDrawable(Drawable drawable) {
avatarDrawable = drawable;
}
/**
* Restores RTT chat history from {@code RttTranscript}.
*
* @param rttTranscript transcript saved previously.
* @return last unfinished local message, return null if there is no current editing local
* message.
*/
@Nullable
String onRestoreRttChat(RttTranscript rttTranscript) {
LogUtil.enterBlock("RttChatAdapater.onRestoreRttChat");
rttMessages = RttChatMessage.fromTranscript(rttTranscript);
lastIndexOfLocalMessage = RttChatMessage.getLastIndexLocalMessage(rttMessages);
notifyDataSetChanged();
if (lastIndexOfLocalMessage < 0) {
return null;
}
RttChatMessage message = rttMessages.get(lastIndexOfLocalMessage);
if (!message.isFinished()) {
return message.getContent();
} else {
return null;
}
}
List<RttTranscriptMessage> getRttTranscriptMessageList() {
return RttChatMessage.toTranscriptMessageList(rttMessages);
}
}
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