Created FriendshipStatusButton

app/src/main/java/org/communiquons/android/comunic/client/ui/fragments/UserAccessDeniedFragment.java

@@ -8,17 +8,16 @@ import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
-import android.widget.LinearLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import org.communiquons.android.comunic.client.R;
 import org.communiquons.android.comunic.client.data.helpers.FriendsListHelper;
 import org.communiquons.android.comunic.client.data.helpers.GetUsersHelper;
-import org.communiquons.android.comunic.client.data.models.FriendshipStatus;
 import org.communiquons.android.comunic.client.data.models.UserInfo;
+import org.communiquons.android.comunic.client.ui.listeners.OnFriendsStatusUpdateListener;
 import org.communiquons.android.comunic.client.ui.listeners.onOpenUsersPageListener;
+import org.communiquons.android.comunic.client.ui.views.FriendshipStatusButton;
 import org.communiquons.android.comunic.client.ui.views.WebUserAccountImage;
 
 /**
@@ -28,7 +27,7 @@ import org.communiquons.android.comunic.client.ui.views.WebUserAccountImage;
  * Created by pierre on 4/11/18.
  */
 
-public class UserAccessDeniedFragment extends Fragment implements View.OnClickListener {
+public class UserAccessDeniedFragment extends Fragment implements OnFriendsStatusUpdateListener {
 
     /**
      * The name in the bundle of the target user ID
@@ -60,11 +59,6 @@ public class UserAccessDeniedFragment extends Fragment implements View.OnClickLi
      */
     private UserInfo mUserInfo;
 
-    /**
-     * Information about the friendship status
-     */
-    private FriendshipStatus mFriendshipStatus;
-
     /**
      * User account image
      */
@@ -76,29 +70,9 @@ public class UserAccessDeniedFragment extends Fragment implements View.OnClickLi
     private TextView mUserName;
 
     /**
-     * Buttons list container
+     * Friendship status button
      */
-    private LinearLayout mButtonsList;
+    private FriendshipStatusButton mFriendshipStatus;
-
-    /**
-     * Send request button
-     */
-    private Button mSendRequestButton;
-
-    /**
-     * Cancel request button
-     */
-    private Button mCancelRequestButton;
-
-    /**
-     * Accept request button
-     */
-    private Button mAcceptRequestButton;
-
-    /**
-     * Reject request button
-     */
-    private Button mRejectRequestButton;
 
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
@@ -133,22 +107,21 @@ public class UserAccessDeniedFragment extends Fragment implements View.OnClickLi
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
 
-        //Get user related fields
         mUserImage = view.findViewById(R.id.user_account_image);
         mUserName = view.findViewById(R.id.user_account_name);
+        mFriendshipStatus = view.findViewById(R.id.friendship_status);
 
-        //Get the buttons
+        mFriendshipStatus.setOnFriendsStatusUpdateListener(this);
-        mButtonsList = view.findViewById(R.id.buttons_list);
-        mSendRequestButton = view.findViewById(R.id.button_send_request);
-        mCancelRequestButton = view.findViewById(R.id.button_cancel_request);
-        mAcceptRequestButton = view.findViewById(R.id.button_accept_request);
-        mRejectRequestButton = view.findViewById(R.id.button_reject_request);
     }
 
     @Override
     public void onResume() {
         super.onResume();
 
+        //Initialize FrienshipStatus button
+        mFriendshipStatus.setUserID(mUserID);
+        mFriendshipStatus.refreshIfRequired();
+
         //Check if it is required to fetch user information
         if(mUserInfo == null){
             getUserInfo();
@@ -204,157 +177,11 @@ public class UserAccessDeniedFragment extends Fragment implements View.OnClickLi
         mUserName.setText(mUserInfo.getDisplayFullName());
         mUserImage.setUser(mUserInfo);
 
-        //Check if we have got the friends
-        if(mFriendshipStatus == null){
-            getFrienshipStatus();
-        }
-        else {
-            onGotFriendshipStatus(mFriendshipStatus);
-        }
     }
 
-    /**
-     * Get the information about the friendship between the two users
-     */
-    private void getFrienshipStatus(){
-
-        //Perform the request in the background
-        new AsyncTask<Integer, Void, FriendshipStatus>(){
 
     @Override
-            protected FriendshipStatus doInBackground(Integer... params) {
+    public void onAreFriend() {
-                return mFriendListHelper.getFrienshipStatus(params[0]);
-            }
-
-            @Override
-            protected void onPostExecute(FriendshipStatus status) {
-                if(getActivity() == null)
-                    return;
-
-                onGotFriendshipStatus(status);
-            }
-        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, mUserID);
-
-    }
-
-    /**
-     * This method is called once we got information about the friendship status
-     *
-     * @param status The status of the frienship or null in case of failure
-     */
-    private void onGotFriendshipStatus(@Nullable FriendshipStatus status){
-
-        //Check for errors
-        if(status == null){
-            Toast.makeText(getActivity(), R.string.err_get_friendship_status,
-                    Toast.LENGTH_SHORT).show();
-            return;
-        }
-
-        //Save the friendship status
-        mFriendshipStatus = status;
-
-        //Hide all the button by default but the list
-        mButtonsList.setVisibility(View.VISIBLE);
-        mSendRequestButton.setVisibility(View.GONE);
-        mCancelRequestButton.setVisibility(View.GONE);
-        mAcceptRequestButton.setVisibility(View.GONE);
-        mRejectRequestButton.setVisibility(View.GONE);
-
-        //Check if the users are friend
-        if(mFriendshipStatus.isFriend()) {
         mOpenUsersPageListener.openUserPage(mUserID);
-            return;
-        }
-
-        //Check if the current user has sent a friendship request
-        if(mFriendshipStatus.isSentRequest()){
-            mCancelRequestButton.setVisibility(View.VISIBLE);
-        }
-
-        //Check if the current user has received a friendship request
-        else if(mFriendshipStatus.isReceivedRequest()){
-            mAcceptRequestButton.setVisibility(View.VISIBLE);
-            mRejectRequestButton.setVisibility(View.VISIBLE);
-        }
-
-        //Else the users have not pending request
-        else {
-            mSendRequestButton.setVisibility(View.VISIBLE);
-        }
-
-        //Make all the buttons click point on the fragment
-        mSendRequestButton.setOnClickListener(this);
-        mCancelRequestButton.setOnClickListener(this);
-        mAcceptRequestButton.setOnClickListener(this);
-        mRejectRequestButton.setOnClickListener(this);
-    }
-
-    @Override
-    public void onClick(View v) {
-
-        //Make buttons list disappear
-        mButtonsList.setVisibility(View.INVISIBLE);
-
-        //Get the ID of the button
-        int action_id = v.getId();
-
-        //Process the request
-        new AsyncTask<Integer, Void, FriendshipStatus>(){
-
-            @Override
-            protected FriendshipStatus doInBackground(Integer... params) {
-
-                //Perform requested action
-                performFriendshipUpdate(params[0]);
-
-                //Return new friendship status
-                return mFriendListHelper.getFrienshipStatus(mUserID);
-            }
-
-            @Override
-            protected void onPostExecute(FriendshipStatus status) {
-                if(getActivity() == null)
-                    return;
-
-                onGotFriendshipStatus(status);
-            }
-        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, action_id);
-
-    }
-
-    /**
-     * Perform the update of the friendship status, as requested per the click on the buttons
-     *
-     * @param action_id The ID of the button that has been clicked
-     */
-    private void performFriendshipUpdate(int action_id){
-
-        switch (action_id){
-
-            //Send a friendship request
-            case R.id.button_send_request:
-                mFriendListHelper.sendRequest(mUserID);
-                break;
-
-            //Accept a friendship request
-            case R.id.button_accept_request:
-                mFriendListHelper.respondRequest(mUserID, true);
-                break;
-
-            //Reject a friendship request
-            case R.id.button_reject_request:
-                mFriendListHelper.respondRequest(mUserID, false);
-                break;
-
-            //Cancel a friendship request
-            case R.id.button_cancel_request:
-                mFriendListHelper.cancelRequest(mUserID);
-                break;
-
-            default:
-                throw new RuntimeException("Unsupported action by updater!");
-        }
-
     }
 }

app/src/main/java/org/communiquons/android/comunic/client/ui/listeners/OnFriendsStatusUpdateListener.java

@@ -0,0 +1,17 @@
+package org.communiquons.android.comunic.client.ui.listeners;
+
+/**
+ * On friend status update listener
+ *
+ * @author Pierre HUBERT
+ */
+public interface OnFriendsStatusUpdateListener {
+
+    /**
+     * This method is called when the two people are friends.
+     *
+     * Warning ! This may be called several times...
+     */
+    void onAreFriend();
+
+}

app/src/main/java/org/communiquons/android/comunic/client/ui/views/FriendshipStatusButton.java

@@ -0,0 +1,339 @@
+package org.communiquons.android.comunic.client.ui.views;
+
+import android.content.Context;
+import android.os.AsyncTask;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import org.communiquons.android.comunic.client.R;
+import org.communiquons.android.comunic.client.data.asynctasks.SafeAsyncTask;
+import org.communiquons.android.comunic.client.data.helpers.FriendsListHelper;
+import org.communiquons.android.comunic.client.data.models.FriendshipStatus;
+import org.communiquons.android.comunic.client.ui.listeners.OnFriendsStatusUpdateListener;
+
+/**
+ * Friendship status button
+ *
+ * @author Pierre HUBERT
+ */
+public class FriendshipStatusButton extends BaseFrameLayoutView implements View.OnClickListener {
+
+    /**
+     * Debug tag
+     */
+    private static final String TAG = FriendshipStatusButton.class.getCanonicalName();
+
+    /**
+     * The ID of the target user
+     */
+    private int mUserID;
+
+    /**
+     * Information about the friendship status
+     */
+    private FriendshipStatus mFriendshipStatus;
+
+    /**
+     * Buttons list container
+     */
+    private LinearLayout mButtonsList;
+
+    /**
+     * Actions buttons
+     */
+    private Button mSendRequestButton;
+    private Button mCancelRequestButton;
+    private Button mAcceptRequestButton;
+    private Button mRejectRequestButton;
+    private Button mFollowButton;
+    private Button mFollowingButton;
+
+    /**
+     * Progress bar
+     */
+    private ProgressBar mProgressBar;
+
+    /**
+     * AsyncTasks
+     */
+    private GetFriendshipStatus mGetFriendShipStatus;
+    private UpdateStatusClass mUpdateStatusClass;
+
+    /**
+     * On friend status update listener
+     */
+    private OnFriendsStatusUpdateListener mOnFriendsStatusUpdateListener;
+
+    public FriendshipStatusButton(@NonNull Context context) {
+        this(context, null);
+    }
+
+    public FriendshipStatusButton(@NonNull Context context, @Nullable AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FriendshipStatusButton(@NonNull Context context, @Nullable AttributeSet attrs,
+                                  int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+
+        View view = inflate(getContext(), R.layout.view_frienship_status, this);
+
+        mProgressBar = view.findViewById(R.id.progressBar);
+        mButtonsList = view.findViewById(R.id.buttons_list);
+        mButtonsList = view.findViewById(R.id.buttons_list);
+        mSendRequestButton = view.findViewById(R.id.button_send_request);
+        mCancelRequestButton = view.findViewById(R.id.button_cancel_request);
+        mAcceptRequestButton = view.findViewById(R.id.button_accept_request);
+        mRejectRequestButton = view.findViewById(R.id.button_reject_request);
+        mFollowButton = view.findViewById(R.id.button_follow);
+        mFollowingButton = view.findViewById(R.id.button_following);
+
+        mSendRequestButton.setOnClickListener(this);
+        mCancelRequestButton.setOnClickListener(this);
+        mAcceptRequestButton.setOnClickListener(this);
+        mRejectRequestButton.setOnClickListener(this);
+        mFollowButton.setOnClickListener(this);
+        mFollowingButton.setOnClickListener(this);
+
+        hideAllButtons();
+        setProgressBarVisibility(true);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+
+        if(mGetFriendShipStatus != null)
+            mGetFriendShipStatus.setOnPostExecuteListener(null);
+
+        if(mUpdateStatusClass != null)
+            mUpdateStatusClass.setOnPostExecuteListener(null);
+    }
+
+    /**
+     * Set the ID of the target user
+     *
+     * @param mUserID The ID of the target user
+     */
+    public void setUserID(int mUserID) {
+        this.mUserID = mUserID;
+    }
+
+    public OnFriendsStatusUpdateListener getOnFriendsStatusUpdateListener() {
+        return mOnFriendsStatusUpdateListener;
+    }
+
+    public void setOnFriendsStatusUpdateListener(OnFriendsStatusUpdateListener onFriendsStatusUpdateListener) {
+        this.mOnFriendsStatusUpdateListener = onFriendsStatusUpdateListener;
+    }
+
+    /**
+     * Refresh current user status, only if required
+     */
+    public void refreshIfRequired(){
+        if(mFriendshipStatus == null)
+            refresh();
+    }
+
+    /**
+     * Refresh current friendship status
+     */
+    public void refresh(){
+
+        hideAllButtons();
+        setProgressBarVisibility(true);
+
+        mGetFriendShipStatus = new GetFriendshipStatus(getContext());
+        mGetFriendShipStatus.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, mUserID);
+        mGetFriendShipStatus.setOnPostExecuteListener(new SafeAsyncTask.OnPostExecuteListener<FriendshipStatus>() {
+            @Override
+            public void OnPostExecute(FriendshipStatus friendshipStatus) {
+                onGotFriendshipsStatus(friendshipStatus);
+            }
+        });
+    }
+
+
+
+    /**
+     * Method called when we have got friendship status
+     *
+     * @param friendshipStatus New friendship status
+     */
+    private void onGotFriendshipsStatus(@Nullable FriendshipStatus friendshipStatus){
+
+        hideAllButtons();
+        setProgressBarVisibility(false);
+
+        mFriendshipStatus = friendshipStatus;
+
+        if(friendshipStatus == null) {
+            Toast.makeText(getContext(), R.string.err_get_friendship_status,
+                    Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+
+        //Update buttons visibility
+        if(!mFriendshipStatus.isFriend()){
+
+            if(mFriendshipStatus.isSentRequest())
+                mCancelRequestButton.setVisibility(View.VISIBLE);
+
+            else if(mFriendshipStatus.isReceivedRequest()){
+                mAcceptRequestButton.setVisibility(View.VISIBLE);
+                mRejectRequestButton.setVisibility(View.VISIBLE);
+            }
+
+            else
+                mSendRequestButton.setVisibility(View.VISIBLE);
+        }
+
+        else {
+
+            //The two people are friends
+            mOnFriendsStatusUpdateListener.onAreFriend();
+
+            if(mFriendshipStatus.isFollowing())
+                mFollowingButton.setVisibility(View.VISIBLE);
+            else
+                mFollowingButton.setVisibility(View.GONE);
+        }
+    }
+
+    @Override
+    public void onClick(View v) {
+        int action_id = v.getId();
+        hideAllButtons();
+        setProgressBarVisibility(true);
+
+        mUpdateStatusClass = new UpdateStatusClass(mUserID, action_id, getContext());
+        mUpdateStatusClass.setOnPostExecuteListener(new SafeAsyncTask.
+                OnPostExecuteListener<FriendshipStatus>() {
+            @Override
+            public void OnPostExecute(FriendshipStatus friendshipStatus) {
+                onGotFriendshipsStatus(friendshipStatus);
+            }
+        });
+        mUpdateStatusClass.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    }
+
+    /**
+     * Hide all view buttons
+     */
+    private void hideAllButtons(){
+        mSendRequestButton.setVisibility(View.GONE);
+        mCancelRequestButton.setVisibility(View.GONE);
+        mAcceptRequestButton.setVisibility(View.GONE);
+        mRejectRequestButton.setVisibility(View.GONE);
+        mFollowButton.setVisibility(View.GONE);
+        mFollowingButton.setVisibility(View.GONE);
+    }
+
+    /**
+     * Update progress bar visibility
+     *
+     * @param visible TRUE : visible / FALSE : else
+     */
+    private void setProgressBarVisibility(boolean visible){
+        mProgressBar.setVisibility(visible ? View.VISIBLE : View.GONE);
+    }
+
+    /**
+     * Safe AsyncTask used to get current friendship status
+     */
+    private static class GetFriendshipStatus extends SafeAsyncTask<Integer, Void, FriendshipStatus>{
+
+        GetFriendshipStatus(Context context) {
+            super(context);
+        }
+
+        @Override
+        protected FriendshipStatus doInBackground(Integer... integers) {
+            return new FriendsListHelper(getContext()).getFrienshipStatus(integers[0]);
+        }
+
+    }
+
+    /**
+     * Class used to update friendship status
+     */
+    private static class UpdateStatusClass extends SafeAsyncTask<Void, Void, FriendshipStatus>{
+
+        private int mFriendID;
+        private int mAction;
+
+        /**
+         * Construct the class
+         *
+         * @param friendID The ID of the target friend
+         * @param action The action to perform
+         * @param context The context of the application
+         */
+        UpdateStatusClass(int friendID, int action, Context context) {
+            super(context);
+            this.mFriendID = friendID;
+            this.mAction = action;
+        }
+
+        @Override
+        protected FriendshipStatus doInBackground(Void... voids) {
+
+            //Friends helper
+            FriendsListHelper helper = new FriendsListHelper(getContext());
+            performUpdate(mAction, mFriendID, helper);
+            return helper.getFrienshipStatus(mFriendID);
+        }
+
+        /**
+         * Perform the update of the friendship status, as requested per the click on the buttons
+         *
+         * @param action_id The ID of the button that has been clicked
+         * @param friend_id The ID of the target friend
+         * @param helper Helper object to use
+         */
+        private void performUpdate(int action_id, int friend_id, FriendsListHelper helper){
+
+            switch (action_id){
+
+                //Send a friendship request
+                case R.id.button_send_request:
+                    helper.sendRequest(friend_id);
+                    break;
+
+                //Accept a friendship request
+                case R.id.button_accept_request:
+                    helper.respondRequest(friend_id, true);
+                    break;
+
+                //Reject a friendship request
+                case R.id.button_reject_request:
+                    helper.respondRequest(friend_id, false);
+                    break;
+
+                //Cancel a friendship request
+                case R.id.button_cancel_request:
+                    helper.cancelRequest(friend_id);
+                    break;
+
+                //Update following status
+                case R.id.button_follow:
+                    helper.setFollowing(friend_id, true);
+                    break;
+                case R.id.button_following:
+                    helper.setFollowing(friend_id, false);
+                    break;
+
+                default:
+                    throw new RuntimeException("Unsupported action by updater!");
+            }
+
+        }
+    }
+}

app/src/main/res/layout/fragment_user_access_denied.xml

@@ -7,90 +7,49 @@
 
     <!-- Basic account information -->
     <LinearLayout
+        android:id="@+id/linearLayout"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginTop="16dp"
         app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
-        android:layout_marginTop="16dp">
+        app:layout_constraintTop_toTopOf="parent">
 
         <org.communiquons.android.comunic.client.ui.views.WebUserAccountImage
             android:id="@+id/user_account_image"
             android:layout_width="@dimen/account_image_default_width"
             android:layout_height="@dimen/account_image_default_height"
-            android:src="@drawable/default_account_image"
+            android:layout_marginEnd="10dp"
             android:contentDescription="@string/user_image_description"
-            android:layout_marginEnd="10dp"/>
+            android:src="@drawable/default_account_image" />
 
         <TextView
             android:id="@+id/user_account_name"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            tools:text="User account name"
+            android:layout_gravity="center_vertical"
-            android:layout_gravity="center_vertical"/>
+            tools:text="User account name" />
 
     </LinearLayout>
 
 
-
+    <org.communiquons.android.comunic.client.ui.views.FriendshipStatusButton
-    <!-- Available actions -->
+        android:id="@+id/friendship_status"
-    <LinearLayout
-        android:id="@+id/buttons_list"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:orientation="vertical"
-        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toRightOf="parent"
-        android:layout_marginTop="0dp">
+        app:layout_constraintTop_toTopOf="parent" />
-
-        <Button
-            android:id="@+id/button_send_request"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/button_send_friend_request"
-            app:layout_constraintLeft_toLeftOf="parent"
-            app:layout_constraintRight_toRightOf="parent" />
-
-        <Button
-            android:id="@+id/button_cancel_request"
-            style="@style/Widget.AppCompat.Button.Colored"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/button_cancel_friend_request"
-            app:layout_constraintLeft_toLeftOf="parent"
-            app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/button_send_request" />
-
-        <Button
-            android:id="@+id/button_accept_request"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/button_accept_friend_request"
-            app:layout_constraintTop_toBottomOf="@+id/button_cancel_request"
-            app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintLeft_toLeftOf="parent" />
-
-        <Button
-            android:id="@+id/button_reject_request"
-            style="@style/Widget.AppCompat.Button.Colored"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:text="@string/button_reject_friend_request"
-            app:layout_constraintLeft_toLeftOf="parent"
-            app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/button_accept_request" />
-    </LinearLayout>
 
     <!-- Account private notice -->
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="0dp"
+        android:layout_marginBottom="8dp"
         android:text="@string/notice_user_page_private"
-        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/friendship_status"
         app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/buttons_list"
+        app:layout_constraintRight_toRightOf="parent" />
-        android:layout_marginBottom="8dp" />
 
 </android.support.constraint.ConstraintLayout>

app/src/main/res/layout/view_frienship_status.xml

@@ -0,0 +1,94 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content">
+
+    <!-- Available actions -->
+    <LinearLayout
+        android:id="@+id/buttons_list"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="0dp"
+        android:orientation="vertical"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <Button
+            android:id="@+id/button_send_request"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_send_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent" />
+
+        <Button
+            android:id="@+id/button_cancel_request"
+            style="@style/Widget.AppCompat.Button.Colored"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_cancel_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_send_request" />
+
+        <Button
+            android:id="@+id/button_accept_request"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:backgroundTint="@color/holo_green_dark"
+            android:textColor="@android:color/white"
+            android:text="@string/button_accept_friend_request"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_cancel_request" />
+
+        <Button
+            android:id="@+id/button_reject_request"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:backgroundTint="@color/holo_red_dark"
+            android:text="@string/button_reject_friend_request"
+            android:textColor="@android:color/white"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_accept_request" />
+
+        <Button
+            android:id="@+id/button_follow"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/button_follow"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_reject_request" />
+
+        <Button
+            android:id="@+id/button_following"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:backgroundTint="@color/colorPrimary"
+            android:text="@string/button_following"
+            android:textColor="@android:color/white"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/button_follow" />
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/buttons_list"
+        app:layout_constraintEnd_toEndOf="@+id/buttons_list"
+        app:layout_constraintStart_toStartOf="@+id/buttons_list"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</android.support.constraint.ConstraintLayout>

app/src/main/res/values-fr/strings.xml

@@ -241,4 +241,7 @@
     <string name="action_reject_friend_request">Rejeter</string>
     <string name="notice_request">Demande</string>
     <string name="action_more_description">Plus d\'options</string>
+    <string name="action_follow">Suivre</string>
+    <string name="button_follow">Suivre</string>
+    <string name="button_following">Suivi</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -244,4 +244,6 @@
     <string name="notice_request">Requested</string>
     <string name="action_more_description">Get more options</string>
     <string name="action_follow">Follow</string>
+    <string name="button_follow">Follow</string>
+    <string name="button_following">Following</string>
 </resources>