make FAB hide on scroll in AccountActivity as well

app/src/main/java/com/keylesspalace/tusky/AccountActivity.java

@@ -47,6 +47,7 @@ import android.widget.TextView;
 
 import com.keylesspalace.tusky.entity.Account;
 import com.keylesspalace.tusky.entity.Relationship;
+import com.keylesspalace.tusky.interfaces.ActionButtonActivity;
 import com.keylesspalace.tusky.interfaces.LinkListener;
 import com.keylesspalace.tusky.pager.AccountPagerAdapter;
 import com.keylesspalace.tusky.receiver.TimelineReceiver;
@@ -64,7 +65,7 @@ import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
 
-public class AccountActivity extends BaseActivity {
+public class AccountActivity extends BaseActivity implements ActionButtonActivity {
     private static final String TAG = "AccountActivity"; // logging tag
 
     private enum FollowState {
@@ -86,6 +87,8 @@ public class AccountActivity extends BaseActivity {
     private TabLayout tabLayout;
     private ImageView accountLockedView;
     private View container;
+    private boolean hideFab;
+    private int oldOffset;
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -127,6 +130,8 @@ public class AccountActivity extends BaseActivity {
             actionBar.setDisplayShowHomeEnabled(true);
         }
 
+        hideFab = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("fabHide", false);
+
         // Add a listener to change the toolbar icon color when it enters/exits its collapsed state.
         AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.account_app_bar_layout);
         final CollapsingToolbarLayout collapsingToolbar =
@@ -158,6 +163,16 @@ public class AccountActivity extends BaseActivity {
                     ThemeUtils.setDrawableTint(context, toolbar.getNavigationIcon(), attribute);
                     ThemeUtils.setDrawableTint(context, toolbar.getOverflowIcon(), attribute);
                 }
+
+                if(floatingBtn != null && hideFab) {
+                    if (verticalOffset > oldOffset) {
+                        floatingBtn.show();
+                    }
+                    if (verticalOffset < oldOffset) {
+                        floatingBtn.hide();
+                    }
+                }
+                oldOffset = verticalOffset;
             }
         });
 
@@ -642,4 +657,11 @@ public class AccountActivity extends BaseActivity {
         }
         return super.onOptionsItemSelected(item);
     }
+
+    @Nullable
+    @Override
+    public FloatingActionButton getActionButton() {
+        return floatingBtn;
+    }
+
 }

app/src/main/java/com/keylesspalace/tusky/MainActivity.java

@@ -23,6 +23,7 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.PersistableBundle;
+import android.support.annotation.Nullable;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.TabLayout;
 import android.support.graphics.drawable.VectorDrawableCompat;
@@ -37,6 +38,7 @@ import android.widget.ImageButton;
 import android.widget.ImageView;
 
 import com.keylesspalace.tusky.entity.Account;
+import com.keylesspalace.tusky.interfaces.ActionButtonActivity;
 import com.keylesspalace.tusky.pager.TimelinePagerAdapter;
 import com.keylesspalace.tusky.receiver.TimelineReceiver;
 import com.keylesspalace.tusky.util.ThemeUtils;
@@ -63,7 +65,7 @@ import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
 
-public class MainActivity extends BaseActivity {
+public class MainActivity extends BaseActivity implements ActionButtonActivity {
     private static final String TAG = "MainActivity"; // logging tag
     private static final long DRAWER_ITEM_EDIT_PROFILE = 0;
     private static final long DRAWER_ITEM_FAVOURITES = 1;
@@ -77,7 +79,8 @@ public class MainActivity extends BaseActivity {
     private static final long DRAWER_ITEM_SAVED_TOOT = 9;
 
     protected static int COMPOSE_RESULT = 1;
-    public FloatingActionButton composeButton;
+
+    private FloatingActionButton composeButton;
     private String loggedInAccountId;
     private String loggedInAccountUsername;
     private Stack<Integer> pageHistory;
@@ -493,4 +496,10 @@ public class MainActivity extends BaseActivity {
     private void onFetchUserInfoFailure(Exception exception) {
         Log.e(TAG, "Failed to fetch user info. " + exception.getMessage());
     }
+
+    @Nullable
+    @Override
+    public FloatingActionButton getActionButton() {
+        return composeButton;
+    }
 }

app/src/main/java/com/keylesspalace/tusky/fragment/AccountListFragment.java

@@ -17,9 +17,12 @@ package com.keylesspalace.tusky.fragment;
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
+import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;
 import android.support.design.widget.TabLayout;
 import android.support.v7.widget.DividerItemDecoration;
@@ -42,6 +45,7 @@ import com.keylesspalace.tusky.BaseActivity;
 import com.keylesspalace.tusky.entity.Account;
 import com.keylesspalace.tusky.entity.Relationship;
 import com.keylesspalace.tusky.interfaces.AccountActionListener;
+import com.keylesspalace.tusky.interfaces.ActionButtonActivity;
 import com.keylesspalace.tusky.network.MastodonApi;
 import com.keylesspalace.tusky.R;
 import com.keylesspalace.tusky.util.HttpHeaderLink;
@@ -77,6 +81,7 @@ public class AccountListFragment extends BaseFragment implements AccountActionLi
     private int bottomFetches;
     private boolean topLoading;
     private int topFetches;
+    private boolean hideFab;
 
     public static AccountListFragment newInstance(Type type) {
         Bundle arguments = new Bundle();
@@ -168,15 +173,55 @@ public class AccountListFragment extends BaseFragment implements AccountActionLi
          * activity is created, so everything needing to access the api object has to be delayed
          * until here. */
         api = activity.mastodonApi;
+
+
+        if (actionButtonPresent()) {
+            /* Use a modified scroll listener that both loads more statuses as it goes, and hides
+             * the follow button on down-scroll. */
+            ActionButtonActivity actionButtonActivity = (ActionButtonActivity) getActivity();
+            final FloatingActionButton composeButton = actionButtonActivity.getActionButton();
+            final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getContext());
+            hideFab = preferences.getBoolean("fabHide", false);
+            scrollListener = new EndlessOnScrollListener(layoutManager) {
+                @Override
+                public void onScrolled(RecyclerView view, int dx, int dy) {
+                    super.onScrolled(view, dx, dy);
+
+                    if (composeButton != null) {
+                        if (hideFab) {
+                            if (dy > 0 && composeButton.isShown()) {
+                                composeButton.hide(); // hides the button if we're scrolling down
+                            } else if (dy < 0 && !composeButton.isShown()) {
+                                composeButton.show(); // shows it if we are scrolling up
+                            }
+                        } else if (!composeButton.isShown()) {
+                            composeButton.show();
+                        }
+                    }
+                }
+
+                @Override
+                public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
+                    AccountListFragment.this.onLoadMore(view);
+                }
+            };
+        } else {
+            // Just use the basic scroll listener to load more accounts.
             scrollListener = new EndlessOnScrollListener(layoutManager) {
                 @Override
                 public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
                     AccountListFragment.this.onLoadMore(view);
                 }
             };
+        }
+
         recyclerView.addOnScrollListener(scrollListener);
     }
 
+    private boolean actionButtonPresent() {
+        return type == Type.FOLLOWS || type == Type.FOLLOWERS;
+    }
+
     @Override
     public void onDestroyView() {
         if (jumpToTopAllowed()) {

app/src/main/java/com/keylesspalace/tusky/fragment/NotificationsFragment.java

@@ -172,7 +172,7 @@ public class NotificationsFragment extends SFragment implements
          * guaranteed to be set until then.
          * Use a modified scroll listener that both loads more notifications as it goes, and hides
          * the compose button on down-scroll. */
-        final FloatingActionButton composeButton = activity.composeButton;
+        final FloatingActionButton composeButton = activity.getActionButton();
         final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(
                 activity);
         preferences.registerOnSharedPreferenceChangeListener(this);
@@ -182,6 +182,7 @@ public class NotificationsFragment extends SFragment implements
             public void onScrolled(RecyclerView view, int dx, int dy) {
                 super.onScrolled(view, dx, dy);
 
+                if(composeButton != null) {
                     if (hideFab) {
                         if (dy > 0 && composeButton.isShown()) {
                             composeButton.hide(); // hides the button if we're scrolling down
@@ -192,6 +193,7 @@ public class NotificationsFragment extends SFragment implements
                         composeButton.show();
                     }
                 }
+            }
 
             @Override
             public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {

app/src/main/java/com/keylesspalace/tusky/fragment/TimelineFragment.java

@@ -34,11 +34,11 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.keylesspalace.tusky.BuildConfig;
-import com.keylesspalace.tusky.MainActivity;
 import com.keylesspalace.tusky.R;
 import com.keylesspalace.tusky.adapter.FooterViewHolder;
 import com.keylesspalace.tusky.adapter.TimelineAdapter;
 import com.keylesspalace.tusky.entity.Status;
+import com.keylesspalace.tusky.interfaces.ActionButtonActivity;
 import com.keylesspalace.tusky.interfaces.StatusActionListener;
 import com.keylesspalace.tusky.network.MastodonApi;
 import com.keylesspalace.tusky.receiver.TimelineReceiver;
@@ -195,19 +195,19 @@ public class TimelineFragment extends SFragment implements
 
         /* This is delayed until onActivityCreated solely because MainActivity.composeButton isn't
          * guaranteed to be set until then. */
-        if (composeButtonPresent()) {
+        if (actionButtonPresent()) {
             /* Use a modified scroll listener that both loads more statuses as it goes, and hides
              * the follow button on down-scroll. */
-            MainActivity activity = (MainActivity) getActivity();
+            ActionButtonActivity activity = (ActionButtonActivity) getActivity();
-            final FloatingActionButton composeButton = activity.composeButton;
+            final FloatingActionButton composeButton = activity.getActionButton();
-            final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(
+            final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getContext());
-                    activity);
             hideFab = preferences.getBoolean("fabHide", false);
             scrollListener = new EndlessOnScrollListener(layoutManager) {
                 @Override
                 public void onScrolled(RecyclerView view, int dx, int dy) {
                     super.onScrolled(view, dx, dy);
 
+                    if (composeButton != null) {
                         if (hideFab) {
                             if (dy > 0 && composeButton.isShown()) {
                                 composeButton.hide(); // hides the button if we're scrolling down
@@ -218,6 +218,7 @@ public class TimelineFragment extends SFragment implements
                             composeButton.show();
                         }
                 }
+                }
 
                 @Override
                 public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
@@ -438,8 +439,8 @@ public class TimelineFragment extends SFragment implements
         return kind != Kind.TAG && kind != Kind.FAVOURITES;
     }
 
-    private boolean composeButtonPresent() {
+    private boolean actionButtonPresent() {
-        return kind != Kind.TAG && kind != Kind.FAVOURITES && kind != Kind.USER;
+        return kind != Kind.TAG && kind != Kind.FAVOURITES;
     }
 
     private void jumpToTop() {

app/src/main/java/com/keylesspalace/tusky/interfaces/ActionButtonActivity.java

@@ -0,0 +1,24 @@
+/* Copyright 2017 Andrew Dawson
+ *
+ * This file is a part of Tusky.
+ *
+ * This program 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.interfaces;
+
+import android.support.annotation.Nullable;
+import android.support.design.widget.FloatingActionButton;
+
+public interface ActionButtonActivity {
+    @Nullable
+    FloatingActionButton getActionButton();
+}