Adding chat list module

Bug: 34841755
Change-Id: I9a4472519fa959c814396dbe65e1bfdd7c773e03

7 files changed, 500 insertions, 3 deletions

diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/GoogleSignedInActivity.java b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/GoogleSignedInActivity.java
index 494c9c7b..8bad9f8e 100644
--- a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/GoogleSignedInActivity.java
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/GoogleSignedInActivity.java
@@ -21,6 +21,7 @@ import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.wearable.activity.WearableActivity;
 import android.util.Log;
+import com.example.android.wearable.wear.messaging.mock.MockDatabase;
 import com.example.android.wearable.wear.messaging.model.Profile;
 import com.example.android.wearable.wear.messaging.util.SharedPreferencesHelper;
 import com.google.android.gms.auth.api.Auth;
@@ -57,6 +58,7 @@ public abstract class GoogleSignedInActivity extends WearableActivity
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setAmbientEnabled();
+        MockDatabase.init(this);
 
         // Try to get the user if they don't exist, return to sign in.
         try {
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/SignInActivity.java b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/SignInActivity.java
index af3d74be..0189930c 100644
--- a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/SignInActivity.java
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/SignInActivity.java
@@ -23,6 +23,7 @@ import android.support.wearable.activity.WearableActivity;
 import android.util.Log;
 import android.view.View;
 import android.widget.Toast;
+import com.example.android.wearable.wear.messaging.chatlist.ChatListActivity;
 import com.example.android.wearable.wear.messaging.mock.MockDatabase;
 import com.example.android.wearable.wear.messaging.model.Profile;
 import com.google.android.gms.auth.api.Auth;
@@ -185,8 +186,8 @@ public class SignInActivity extends WearableActivity
             mSignInButton.setEnabled(false);
         }
 
-//        Intent chatActivityIntent = new Intent(this, ChatListActivity.class);
-//        startActivity(chatActivityIntent);
+        Intent chatActivityIntent = new Intent(this, ChatListActivity.class);
+        startActivity(chatActivityIntent);
         finish();
     }
 
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chat/ChatAdapter.java b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chat/ChatAdapter.java
index 6e2831b8..5cca0872 100644
--- a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chat/ChatAdapter.java
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chat/ChatAdapter.java
@@ -143,7 +143,7 @@ class ChatAdapter extends WearableRecyclerView.Adapter<ChatAdapter.MessageViewHo
     }
 
     /**
-     * Converts time since epoch to Month Date Time
+     * Converts time since epoch to Month Date Time.
      *
      * @param time since epoch
      * @return String formatted in Month Date HH:MM
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListActivity.java b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListActivity.java
new file mode 100644
index 00000000..56727d8d
--- /dev/null
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListActivity.java
@@ -0,0 +1,135 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * 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.example.android.wearable.wear.messaging.chatlist;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.wearable.activity.WearableActivity;
+import android.support.wearable.view.WearableRecyclerView;
+import android.util.Log;
+import com.example.android.wearable.wear.messaging.GoogleSignedInActivity;
+import com.example.android.wearable.wear.messaging.R;
+import com.example.android.wearable.wear.messaging.chat.ChatActivity;
+import com.example.android.wearable.wear.messaging.contacts.ContactsListActivity;
+import com.example.android.wearable.wear.messaging.mock.MockDatabase;
+import com.example.android.wearable.wear.messaging.model.Chat;
+import com.example.android.wearable.wear.messaging.model.Profile;
+import com.example.android.wearable.wear.messaging.util.Constants;
+import com.example.android.wearable.wear.messaging.util.DividerItemDecoration;
+import com.example.android.wearable.wear.messaging.util.SharedPreferencesHelper;
+import java.io.IOException;
+import java.util.ArrayList;
+
+/**
+ * Displays list of active chats of user.
+ *
+ * <p>Uses a simple mocked backend solution with shared preferences.
+ *
+ * TODO: Processes database activities on the UI thread, move to async.
+ */
+public class ChatListActivity extends GoogleSignedInActivity {
+
+    private static final String TAG = "ChatListActivity";
+
+    // Triggered by contact selection in ContactsListActivity.
+    private static final int CONTACTS_SELECTED_REQUEST_CODE = 9004;
+
+    private WearableRecyclerView mRecyclerView;
+    private ChatListAdapter mRecyclerAdapter;
+    private Profile mUser;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setTheme(R.style.BlueTheme);
+        setContentView(R.layout.activity_chat_list);
+
+        mRecyclerView = (WearableRecyclerView) findViewById(R.id.recycler_view);
+
+        mRecyclerView.addItemDecoration(new DividerItemDecoration(this, R.drawable.divider));
+        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
+        mRecyclerView.setLayoutManager(layoutManager);
+        mRecyclerView.setHasFixedSize(true);
+
+        mRecyclerAdapter = new ChatListAdapter(this, new MyChatListAdapterListener(this));
+        mRecyclerView.setAdapter(mRecyclerAdapter);
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        Log.d(TAG, "onStart");
+
+        // Try to get the user if they don't exist, return to login.
+        try {
+            mUser = SharedPreferencesHelper.readUserFromJsonPref(this);
+        } catch (IOException e) {
+            Log.e(TAG, "User is not stored locally");
+        }
+        if (mUser == null) {
+            onGoogleSignInFailure();
+        } else {
+            mRecyclerAdapter.setChats(MockDatabase.getAllChats());
+        }
+    }
+
+    /**
+     * A handler for the adapter to launch the correct activities based on the type of item selected
+     */
+    private class MyChatListAdapterListener implements ChatListAdapter.ChatAdapterListener {
+
+        private final WearableActivity activity;
+
+        MyChatListAdapterListener(WearableActivity activity) {
+            this.activity = activity;
+        }
+
+        @Override
+        public void newChatSelected() {
+            Intent intent = new Intent(activity, ContactsListActivity.class);
+            activity.startActivityForResult(intent, CONTACTS_SELECTED_REQUEST_CODE);
+        }
+
+        @Override
+        public void openChat(Chat chat) {
+            Intent startChat = new Intent(activity, ChatActivity.class);
+            startChat.putExtra(Constants.EXTRA_CHAT, chat);
+            activity.startActivity(startChat);
+        }
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == CONTACTS_SELECTED_REQUEST_CODE) {
+            // Selected contacts confirmed.
+            if (resultCode == RESULT_OK) {
+                ArrayList<Profile> contacts =
+                        data.getParcelableArrayListExtra(Constants.RESULT_CONTACTS_KEY);
+                // TODO: this should be moved to the background,
+                Chat newChatWithSelectedContacts = MockDatabase.createChat(contacts, getUser());
+
+                Log.d(TAG, String.format("Starting chat with %d contact(s)", contacts.size()));
+
+                // Launch ChatActivity with new chat.
+                Intent startChat = new Intent(this, ChatActivity.class);
+                startChat.putExtra(Constants.EXTRA_CHAT, newChatWithSelectedContacts);
+                startActivity(startChat);
+            }
+        }
+    }
+}
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListAdapter.java b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListAdapter.java
new file mode 100644
index 00000000..7fb8edb4
--- /dev/null
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/java/com/example/android/wearable/wear/messaging/chatlist/ChatListAdapter.java
@@ -0,0 +1,249 @@
+/*
+ * Copyright (c) 2017 Google Inc.
+ *
+ *  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.example.android.wearable.wear.messaging.chatlist;
+
+import android.content.Context;
+import android.support.v7.util.SortedList;
+import android.support.v7.widget.RecyclerView;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import com.bumptech.glide.Glide;
+import com.example.android.wearable.wear.messaging.R;
+import com.example.android.wearable.wear.messaging.model.Chat;
+import com.example.android.wearable.wear.messaging.model.Message;
+import com.example.android.wearable.wear.messaging.model.Profile;
+import de.hdodenhof.circleimageview.CircleImageView;
+import java.util.Collection;
+
+/**
+ * Adapter for list of chats.
+ *
+ * <p>If chat is empty, displays icon to start a new chat. Otherwise, activity displays the title of
+ * chat as first element followed by the rest of the conversation.
+ *
+ * <p>The RecyclerView holds the title so it can scroll off the screen as a user scrolls down the
+ * page.
+ */
+public class ChatListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final String TAG = "ChatListAdapter";
+
+    private static final int TYPE_ADD = 0;
+    private static final int TYPE_CONTENT = 1;
+
+    private static final int INDEX_OFFSET = 1;
+
+    private final Context context;
+    private final ChatAdapterListener listener;
+    private final SortedList<Chat> mChats;
+
+    public ChatListAdapter(Context context, ChatAdapterListener listener) {
+        this.context = context;
+        this.listener = listener;
+        mChats =
+                new SortedList<>(
+                        Chat.class,
+                        new SortedList.Callback<Chat>() {
+
+                            // Descending list based on chat's last message time.
+                            @Override
+                            public int compare(Chat chat1, Chat chat2) {
+                                Long diff =
+                                        (chat2.getLastMessage().getSentTime()
+                                                - chat1.getLastMessage().getSentTime());
+                                return diff.intValue();
+                            }
+
+                            @Override
+                            public void onInserted(int position, int count) {
+                                notifyItemRangeInserted(position + INDEX_OFFSET, count);
+                            }
+
+                            @Override
+                            public void onRemoved(int position, int count) {
+                                notifyItemRangeRemoved(position + INDEX_OFFSET, count);
+                            }
+
+                            @Override
+                            public void onMoved(int fromPosition, int toPosition) {
+                                notifyItemMoved(
+                                        fromPosition + INDEX_OFFSET, toPosition + INDEX_OFFSET);
+                            }
+
+                            @Override
+                            public void onChanged(int position, int count) {
+                                Log.d(
+                                        TAG,
+                                        String.format("Item changed %d", position + INDEX_OFFSET));
+                                // Since position 0 is the title
+                                notifyItemRangeChanged(position + INDEX_OFFSET, count);
+                            }
+
+                            @Override
+                            public boolean areContentsTheSame(Chat oldItem, Chat newItem) {
+                                return oldItem.equals(newItem);
+                            }
+
+                            @Override
+                            public boolean areItemsTheSame(Chat item1, Chat item2) {
+                                return item1.getId().equals(item2.getId());
+                            }
+                        });
+    }
+
+    /**
+     * A listener for a client to receive events about which actionable items occurred in the
+     * adapter; i.e., either the user wants a brand new chat started or they are opening an existing
+     * chat.
+     */
+    public interface ChatAdapterListener {
+        void newChatSelected();
+
+        void openChat(Chat chat);
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        if (position == 0) {
+            return TYPE_ADD;
+        }
+        return TYPE_CONTENT;
+    }
+
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        if (viewType == TYPE_ADD) {
+            return new AddChatViewHolder(
+                    LayoutInflater.from(parent.getContext())
+                            .inflate(R.layout.action_new_chat, parent, false));
+        } else {
+            return new ChatItemViewHolder(
+                    LayoutInflater.from(parent.getContext())
+                            .inflate(R.layout.chat_list_item, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
+
+        if (holder instanceof AddChatViewHolder) {
+            ((AddChatViewHolder) holder)
+                    .row.setOnClickListener(
+                            new View.OnClickListener() {
+                                @Override
+                                public void onClick(View v) {
+                                    Log.d(TAG, "New chat has been selected");
+                                    listener.newChatSelected();
+                                }
+                            });
+        } else if (holder instanceof ChatItemViewHolder) {
+            final ChatItemViewHolder chatItemViewHolder = (ChatItemViewHolder) holder;
+
+            //need to account for having the add button before the list of mChats
+            final Chat chat = mChats.get(position - INDEX_OFFSET);
+
+            chatItemViewHolder.row.setOnClickListener(
+                    new View.OnClickListener() {
+                        @Override
+                        public void onClick(View v) {
+                            listener.openChat(chat);
+                        }
+                    });
+
+            chatItemViewHolder.alias.setText(chat.getAlias());
+
+            Message lastMessage = chat.getLastMessage();
+            if (lastMessage != null) {
+                Profile lastMessageSender;
+                if (chat.getParticipants().size() == 1) {
+                    lastMessageSender = chat.getParticipants().values().iterator().next();
+                } else {
+                    lastMessageSender = chat.getParticipants().get(lastMessage.getSenderId());
+                }
+
+                if (lastMessageSender == null) {
+                    chatItemViewHolder.aliasImage.setImageResource(R.drawable.ic_face_white_24dp);
+                    // Blank out any text that may be left after updating the view holder contents.
+                    chatItemViewHolder.lastMessage.setText("");
+                } else {
+                    String lastMessageText = lastMessage.getText();
+                    String messageString = lastMessageSender.getName() + ": " + lastMessageText;
+
+                    chatItemViewHolder.lastMessage.setText(messageString);
+
+                    Glide.with(context)
+                            .load(lastMessageSender.getProfileImageUri())
+                            .placeholder(R.drawable.ic_face_white_24dp)
+                            .into(chatItemViewHolder.aliasImage);
+                }
+            }
+
+            // Show group icon if more than 1 participant
+            int numParticipants = chat.getParticipants().size();
+            if (numParticipants > 1) {
+                chatItemViewHolder.aliasImage.setImageResource(R.drawable.ic_group_white_48dp);
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return mChats.size() + INDEX_OFFSET;
+    }
+
+    public void setChats(final Collection<Chat> chats) {
+        // There is a bug with {@link SortedList#addAll} that will add new items to the end
+        // of the list allowing duplications in the view which is unexpected behavior
+        // https://code.google.com/p/android/issues/detail?id=201618
+        // so we will mimic the add all operation (add individually but execute in one batch)
+        mChats.beginBatchedUpdates();
+        for (Chat chat : chats) {
+            mChats.add(chat);
+        }
+        mChats.endBatchedUpdates();
+    }
+
+    private class AddChatViewHolder extends RecyclerView.ViewHolder {
+
+        private final ViewGroup row;
+
+        AddChatViewHolder(View itemView) {
+            super(itemView);
+
+            row = (ViewGroup) itemView.findViewById(R.id.percent_layout);
+        }
+    }
+
+    private class ChatItemViewHolder extends RecyclerView.ViewHolder {
+
+        private ViewGroup row;
+        private final TextView alias;
+        private final CircleImageView aliasImage;
+        private final TextView lastMessage;
+
+        ChatItemViewHolder(View itemView) {
+            super(itemView);
+
+            row = (ViewGroup) itemView.findViewById(R.id.layout_chat_list_item);
+            alias = (TextView) itemView.findViewById(R.id.text_alias);
+            aliasImage = (CircleImageView) itemView.findViewById(R.id.profile);
+            lastMessage = (TextView) itemView.findViewById(R.id.text_last_message);
+        }
+    }
+}
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/activity_chat_list.xml b/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/activity_chat_list.xml
new file mode 100644
index 00000000..e703e1b4
--- /dev/null
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/activity_chat_list.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2017 Google Inc.
+  ~
+  ~ 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.
+  -->
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/mainFrameLayout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="com.example.android.wearable.wear.messaging.chatlist.ChatListActivity">
+
+    <android.support.wearable.view.WearableRecyclerView
+        android:id="@+id/recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@null"
+        android:clipToPadding="false"
+        android:paddingBottom="@dimen/list_item_height"
+        android:paddingTop="@dimen/list_item_height"
+        android:scrollbars="vertical" />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/chat_list_item.xml b/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/chat_list_item.xml
new file mode 100644
index 00000000..8135586a
--- /dev/null
+++ b/wearable/wear/WearMessagingApp/Wearable/src/main/res/layout/chat_list_item.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright 2017 Google Inc.
+  ~
+  ~ 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.
+  -->
+<android.support.percent.PercentRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/layout_chat_list_item"
+    android:paddingTop="@dimen/vertical_spacing"
+    android:paddingBottom="@dimen/vertical_spacing"
+    android:layout_marginBottom="@dimen/divider"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <RelativeLayout
+        android:id="@+id/profile_layout"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentStart="true"
+        android:layout_centerVertical="true"
+        app:layout_marginStartPercent="@dimen/padding_15">
+
+        <de.hdodenhof.circleimageview.CircleImageView
+            android:id="@+id/profile"
+            android:layout_width="@dimen/circle_image_diameter"
+            android:layout_height="@dimen/circle_image_diameter"
+            android:layout_alignParentStart="true"
+            android:layout_centerVertical="true"
+            tools:src="@drawable/ic_face_white_24dp"
+            app:circle_border_color="@color/blue_15"
+            app:circle_border_width="2dp"
+            app:layout_marginStartPercent="@dimen/padding_15"
+            android:layout_centerInParent="true" />
+
+    </RelativeLayout>
+
+    <LinearLayout
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:layout_centerVertical="true"
+        android:layout_toEndOf="@id/profile_layout"
+        android:orientation="vertical"
+        android:layout_marginStart="@dimen/keyline_large"
+        app:layout_marginEndPercent="@dimen/padding_10">
+        <TextView
+            android:id="@+id/text_alias"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:ellipsize="end"
+            android:includeFontPadding="false"
+            android:maxLines="1"
+            tools:text="Alias"
+            android:layout_marginBottom="@dimen/vertical_spacing_small"/>
+        <TextView
+            android:id="@+id/text_last_message"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:ellipsize="end"
+            android:includeFontPadding="false"
+            android:maxLines="1"
+            tools:text="@string/holder_text" />
+    </LinearLayout>
+</android.support.percent.PercentRelativeLayout>
\ No newline at end of file