Port tunnel creation UI from Viscerion

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

9 files changed, 138 insertions, 918 deletions

diff --git a/app/src/main/java/com/wireguard/android/activity/MainActivity.java b/app/src/main/java/com/wireguard/android/activity/MainActivity.java
index ab9a4f8a..e70af6f1 100644
--- a/app/src/main/java/com/wireguard/android/activity/MainActivity.java
+++ b/app/src/main/java/com/wireguard/android/activity/MainActivity.java
@@ -14,13 +14,11 @@ import androidx.fragment.app.FragmentTransaction;
 import androidx.appcompat.app.ActionBar;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.View;
 import android.widget.LinearLayout;
 
 import com.wireguard.android.R;
 import com.wireguard.android.fragment.TunnelDetailFragment;
 import com.wireguard.android.fragment.TunnelEditorFragment;
-import com.wireguard.android.fragment.TunnelListFragment;
 import com.wireguard.android.model.Tunnel;
 
 /**
@@ -33,16 +31,10 @@ public class MainActivity extends BaseActivity
         implements FragmentManager.OnBackStackChangedListener {
     @Nullable private ActionBar actionBar;
     private boolean isTwoPaneLayout;
-    @Nullable private TunnelListFragment listFragment;
 
     @Override
     public void onBackPressed() {
         final int backStackEntries = getSupportFragmentManager().getBackStackEntryCount();
-        // If the action menu is visible and expanded, collapse it instead of navigating back.
-        if (isTwoPaneLayout || backStackEntries == 0) {
-            if (listFragment != null && listFragment.collapseActionMenu())
-                return;
-        }
         // If the two-pane layout does not have an editor open, going back should exit the app.
         if (isTwoPaneLayout && backStackEntries <= 1) {
             finish();
@@ -74,12 +66,8 @@ public class MainActivity extends BaseActivity
         setContentView(R.layout.main_activity);
         actionBar = getSupportActionBar();
         isTwoPaneLayout = findViewById(R.id.master_detail_wrapper) instanceof LinearLayout;
-        listFragment = (TunnelListFragment) getSupportFragmentManager().findFragmentByTag("LIST");
         getSupportFragmentManager().addOnBackStackChangedListener(this);
         onBackStackChanged();
-        final View actionBarView = findViewById(R.id.action_bar);
-        if (actionBarView != null)
-            actionBarView.setOnTouchListener((v, e) -> listFragment != null && listFragment.collapseActionMenu());
     }
 
     @Override
diff --git a/app/src/main/java/com/wireguard/android/fragment/AddTunnelsSheet.kt b/app/src/main/java/com/wireguard/android/fragment/AddTunnelsSheet.kt
new file mode 100644
index 00000000..3df141be
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/fragment/AddTunnelsSheet.kt
@@ -0,0 +1,106 @@
+/*
+ * Copyright © 2020 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package com.wireguard.android.fragment
+
+import android.content.Intent
+import android.graphics.drawable.GradientDrawable
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewTreeObserver
+import android.widget.FrameLayout
+import androidx.fragment.app.Fragment
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import com.google.zxing.integration.android.IntentIntegrator
+import com.wireguard.android.R
+import com.wireguard.android.activity.TunnelCreatorActivity
+import com.wireguard.android.util.resolveAttribute
+
+class AddTunnelsSheet : BottomSheetDialogFragment() {
+
+    private lateinit var behavior: BottomSheetBehavior<FrameLayout>
+    private val bottomSheetCallback = object : BottomSheetBehavior.BottomSheetCallback() {
+        override fun onSlide(bottomSheet: View, slideOffset: Float) {
+        }
+
+        override fun onStateChanged(bottomSheet: View, newState: Int) {
+            if (newState == BottomSheetBehavior.STATE_COLLAPSED) {
+                dismiss()
+            }
+        }
+    }
+
+    override fun getTheme(): Int {
+        return R.style.BottomSheetDialogTheme
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        if (savedInstanceState != null) dismiss()
+        return inflater.inflate(R.layout.add_tunnels_bottom_sheet, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        view.viewTreeObserver.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
+            override fun onGlobalLayout() {
+                view.viewTreeObserver.removeOnGlobalLayoutListener(this)
+                val dialog = dialog as BottomSheetDialog? ?: return
+                behavior = dialog.behavior
+                behavior.state = BottomSheetBehavior.STATE_EXPANDED
+                behavior.peekHeight = 0
+                behavior.addBottomSheetCallback(bottomSheetCallback)
+                dialog.findViewById<View>(R.id.create_empty)?.setOnClickListener {
+                    dismiss()
+                    onRequestCreateConfig()
+                }
+                dialog.findViewById<View>(R.id.create_from_file)?.setOnClickListener {
+                    dismiss()
+                    onRequestImportConfig()
+                }
+                dialog.findViewById<View>(R.id.create_from_qrcode)?.setOnClickListener {
+                    dismiss()
+                    onRequestScanQRCode()
+                }
+            }
+        })
+        val gradientDrawable = GradientDrawable().apply {
+            setColor(requireContext().resolveAttribute(R.attr.colorBackground))
+        }
+        view.background = gradientDrawable
+    }
+
+    override fun dismiss() {
+        super.dismiss()
+        behavior.removeBottomSheetCallback(bottomSheetCallback)
+    }
+
+    private fun requireTargetFragment(): Fragment {
+        return requireNotNull(targetFragment) { "A target fragment should always be set" }
+    }
+
+    private fun onRequestCreateConfig() {
+        startActivity(Intent(activity, TunnelCreatorActivity::class.java))
+    }
+
+    private fun onRequestImportConfig() {
+        val intent = Intent(Intent.ACTION_GET_CONTENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = "*/*"
+        }
+        requireTargetFragment().startActivityForResult(intent, TunnelListFragment.REQUEST_IMPORT)
+    }
+
+    private fun onRequestScanQRCode() {
+        val integrator = IntentIntegrator.forSupportFragment(requireTargetFragment()).apply {
+            setOrientationLocked(false)
+            setBeepEnabled(false)
+            setPrompt(getString(R.string.qr_code_hint))
+        }
+        integrator.initiateScan(listOf(IntentIntegrator.QR_CODE))
+    }
+}
diff --git a/app/src/main/java/com/wireguard/android/fragment/TunnelListFragment.java b/app/src/main/java/com/wireguard/android/fragment/TunnelListFragment.java
index 59260500..c86da99e 100644
--- a/app/src/main/java/com/wireguard/android/fragment/TunnelListFragment.java
+++ b/app/src/main/java/com/wireguard/android/fragment/TunnelListFragment.java
@@ -39,7 +39,6 @@ import com.wireguard.android.databinding.TunnelListItemBinding;
 import com.wireguard.android.model.Tunnel;
 import com.wireguard.android.util.ErrorMessages;
 import com.wireguard.android.widget.MultiselectableRelativeLayout;
-import com.wireguard.android.widget.fab.FloatingActionsMenuRecyclerViewScrollListener;
 import com.wireguard.config.BadConfigException;
 import com.wireguard.config.Config;
 
@@ -65,21 +64,14 @@ import java9.util.stream.StreamSupport;
  */
 
 public class TunnelListFragment extends BaseFragment {
-    private static final int REQUEST_IMPORT = 1;
+    public static final int REQUEST_IMPORT = 1;
+    private static final int REQUEST_TARGET_FRAGMENT = 2;
     private static final String TAG = "WireGuard/" + TunnelListFragment.class.getSimpleName();
 
     private final ActionModeListener actionModeListener = new ActionModeListener();
     @Nullable private ActionMode actionMode;
     @Nullable private TunnelListFragmentBinding binding;
 
-    public boolean collapseActionMenu() {
-        if (binding != null && binding.createMenu.isExpanded()) {
-            binding.createMenu.collapse();
-            return true;
-        }
-        return false;
-    }
-
     private void importTunnel(@NonNull final String configText) {
         try {
             // Ensure the config text is parseable before proceeding…
@@ -218,21 +210,17 @@ public class TunnelListFragment extends BaseFragment {
         }
     }
 
-    @SuppressWarnings("deprecation")
     @SuppressLint("ClickableViewAccessibility")
     @Override
     public View onCreateView(@NonNull final LayoutInflater inflater, @Nullable final ViewGroup container,
                              @Nullable final Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
         binding = TunnelListFragmentBinding.inflate(inflater, container, false);
-
-        binding.tunnelList.setOnTouchListener((view, motionEvent) -> {
-            if (binding != null) {
-                binding.createMenu.collapse();
-            }
-            return false;
+        binding.createFab.setOnClickListener(v -> {
+            final AddTunnelsSheet bottomSheet = new AddTunnelsSheet();
+            bottomSheet.setTargetFragment(this, REQUEST_TARGET_FRAGMENT);
+            bottomSheet.show(requireFragmentManager(), "BOTTOM_SHEET");
         });
-        binding.tunnelList.setOnScrollListener(new FloatingActionsMenuRecyclerViewScrollListener(binding.createMenu));
         binding.executePendingBindings();
         return binding.getRoot();
     }
@@ -245,36 +233,11 @@ public class TunnelListFragment extends BaseFragment {
 
     @Override
     public void onPause() {
-        if (binding != null) {
-            binding.createMenu.collapse();
-        }
         super.onPause();
     }
 
     public void onRequestCreateConfig(@SuppressWarnings("unused") final View view) {
         startActivity(new Intent(getActivity(), TunnelCreatorActivity.class));
-        if (binding != null)
-            binding.createMenu.collapse();
-    }
-
-    public void onRequestImportConfig(@SuppressWarnings("unused") final View view) {
-        final Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
-        intent.addCategory(Intent.CATEGORY_OPENABLE);
-        intent.setType("*/*");
-        startActivityForResult(intent, REQUEST_IMPORT);
-        if (binding != null)
-            binding.createMenu.collapse();
-    }
-
-    public void onRequestScanQRCode(@SuppressWarnings("unused") final View view) {
-        final IntentIntegrator intentIntegrator = IntentIntegrator.forSupportFragment(this);
-        intentIntegrator.setOrientationLocked(false);
-        intentIntegrator.setBeepEnabled(false);
-        intentIntegrator.setPrompt(getString(R.string.qr_code_hint));
-        intentIntegrator.initiateScan(Collections.singletonList(IntentIntegrator.QR_CODE));
-
-        if (binding != null)
-            binding.createMenu.collapse();
     }
 
     @Override
@@ -296,6 +259,14 @@ public class TunnelListFragment extends BaseFragment {
         });
     }
 
+    private void showSnackbar(final CharSequence message) {
+        if (binding != null) {
+            final Snackbar snackbar = Snackbar.make(binding.mainContainer, message, Snackbar.LENGTH_LONG);
+            snackbar.setAnchorView(binding.createFab);
+            snackbar.show();
+        }
+    }
+
     private void onTunnelDeletionFinished(final Integer count, @Nullable final Throwable throwable) {
         final String message;
         if (throwable == null) {
@@ -305,9 +276,7 @@ public class TunnelListFragment extends BaseFragment {
             message = getResources().getQuantityString(R.plurals.delete_error, count, count, error);
             Log.e(TAG, message, throwable);
         }
-        if (binding != null) {
-            Snackbar.make(binding.mainContainer, message, Snackbar.LENGTH_LONG).show();
-        }
+        showSnackbar(message);
     }
 
     private void onTunnelImportFinished(final List<Tunnel> tunnels, final Collection<Throwable> throwables) {
@@ -331,8 +300,7 @@ public class TunnelListFragment extends BaseFragment {
                     tunnels.size() + throwables.size(),
                     tunnels.size(), tunnels.size() + throwables.size());
 
-        if (binding != null)
-            Snackbar.make(binding.mainContainer, message, Snackbar.LENGTH_LONG).show();
+        showSnackbar(message);
     }
 
     @Override
diff --git a/app/src/main/java/com/wireguard/android/util/Extensions.kt b/app/src/main/java/com/wireguard/android/util/Extensions.kt
new file mode 100644
index 00000000..6b528a85
--- /dev/null
+++ b/app/src/main/java/com/wireguard/android/util/Extensions.kt
@@ -0,0 +1,16 @@
+/*
+ * Copyright © 2020 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.android.util
+
+import android.content.Context
+import android.util.TypedValue
+import androidx.annotation.AttrRes
+
+fun Context.resolveAttribute(@AttrRes attrRes: Int): Int {
+    val typedValue = TypedValue()
+    theme.resolveAttribute(attrRes, typedValue, true)
+    return typedValue.data
+}
diff --git a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionButtonBehavior.java b/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionButtonBehavior.java
deleted file mode 100644
index 616e176e..00000000
--- a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionButtonBehavior.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget.fab;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.TimeInterpolator;
-import android.animation.ValueAnimator;
-import android.content.Context;
-import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import com.google.android.material.snackbar.Snackbar;
-import androidx.interpolator.view.animation.FastOutSlowInInterpolator;
-import android.util.AttributeSet;
-import android.view.View;
-
-public class FloatingActionButtonBehavior extends CoordinatorLayout.Behavior<FloatingActionsMenu> {
-
-    private static final long ANIMATION_DURATION = 250;
-    private static final TimeInterpolator FAST_OUT_SLOW_IN_INTERPOLATOR = new FastOutSlowInInterpolator();
-
-    public FloatingActionButtonBehavior(final Context context, final AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    private static void animateChange(final FloatingActionsMenu child, final float destination, final float fullSpan) {
-        final float origin = child.getBehaviorYTranslation();
-        if (Math.abs(destination - origin) < fullSpan / 2) {
-            child.setBehaviorYTranslation(destination);
-            return;
-        }
-        final ValueAnimator animator = new ValueAnimator();
-        animator.setFloatValues(origin, destination);
-        animator.setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR);
-        animator.setDuration((long) (ANIMATION_DURATION * (Math.abs(destination - origin) / fullSpan)));
-        animator.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(final Animator a) {
-                child.setBehaviorYTranslation(destination);
-            }
-        });
-        animator.addUpdateListener(a -> child.setBehaviorYTranslation((float) a.getAnimatedValue()));
-        animator.start();
-    }
-
-    @Override
-    public boolean layoutDependsOn(final CoordinatorLayout parent, final FloatingActionsMenu child,
-                                   final View dependency) {
-        return dependency instanceof Snackbar.SnackbarLayout;
-    }
-
-    @Override
-    public boolean onDependentViewChanged(final CoordinatorLayout parent, final FloatingActionsMenu child,
-                                          final View dependency) {
-        animateChange(child, Math.min(0, dependency.getTranslationY() - dependency.getMeasuredHeight()), dependency.getMeasuredHeight());
-        return true;
-    }
-
-    @Override
-    public void onDependentViewRemoved(final CoordinatorLayout parent, final FloatingActionsMenu child,
-                                       final View dependency) {
-        animateChange(child, 0, dependency.getMeasuredHeight());
-    }
-}
diff --git a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenu.java b/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenu.java
deleted file mode 100644
index 4ac747cd..00000000
--- a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenu.java
+++ /dev/null
@@ -1,629 +0,0 @@
-/*
- * Copyright © 2014 Jerzy Chalupski
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget.fab;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.AnimatorSet;
-import android.animation.ObjectAnimator;
-import android.animation.TimeInterpolator;
-import android.content.Context;
-import android.content.res.TypedArray;
-import android.graphics.Canvas;
-import android.graphics.Rect;
-import android.graphics.drawable.Drawable;
-import android.graphics.drawable.LayerDrawable;
-import android.os.Build;
-import android.os.Parcel;
-import android.os.Parcelable;
-import androidx.annotation.Keep;
-import androidx.annotation.Nullable;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-import androidx.core.content.res.ResourcesCompat;
-import androidx.appcompat.widget.AppCompatTextView;
-import android.util.AttributeSet;
-import android.view.ContextThemeWrapper;
-import android.view.TouchDelegate;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.animation.DecelerateInterpolator;
-import android.view.animation.OvershootInterpolator;
-import android.widget.TextView;
-
-import com.wireguard.android.R;
-
-public class FloatingActionsMenu extends ViewGroup {
-    public static final int EXPAND_DOWN = 1;
-    public static final int EXPAND_LEFT = 2;
-    public static final int EXPAND_RIGHT = 3;
-    public static final int EXPAND_UP = 0;
-    public static final int LABELS_ON_LEFT_SIDE = 0;
-    public static final int LABELS_ON_RIGHT_SIDE = 1;
-    private static final TimeInterpolator ALPHA_EXPAND_INTERPOLATOR = new DecelerateInterpolator();
-    private static final int ANIMATION_DURATION = 300;
-    private static final boolean BROKEN_LABEL_STYLE = Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1 && Build.BRAND.equalsIgnoreCase("ASUS");
-    private static final float COLLAPSED_PLUS_ROTATION = 0f;
-    private static final TimeInterpolator COLLAPSE_INTERPOLATOR = new DecelerateInterpolator(3f);
-    private static final float EXPANDED_PLUS_ROTATION = 90f + 45f;
-    private static final TimeInterpolator EXPAND_INTERPOLATOR = new OvershootInterpolator();
-    private final AnimatorSet mCollapseAnimation = new AnimatorSet().setDuration(ANIMATION_DURATION);
-    private final AnimatorSet mExpandAnimation = new AnimatorSet().setDuration(ANIMATION_DURATION);
-    private final Rect touchArea = new Rect(0, 0, 0, 0);
-    private float behaviorYTranslation;
-    @Nullable private FloatingActionButton mAddButton;
-    private int mButtonSpacing;
-    private int mButtonsCount;
-    private int mExpandDirection;
-    private boolean mExpanded;
-    private int mLabelsMargin;
-    private int mLabelsPosition;
-    private int mLabelsStyle;
-    private int mLabelsVerticalOffset;
-    @Nullable private OnFloatingActionsMenuUpdateListener mListener;
-    private int mMaxButtonHeight;
-    private int mMaxButtonWidth;
-    @Nullable private RotatingDrawable mRotatingDrawable;
-    @Nullable private TouchDelegateGroup mTouchDelegateGroup;
-    private float scrollYTranslation;
-
-    public FloatingActionsMenu(final Context context) {
-        this(context, null);
-    }
-
-    public FloatingActionsMenu(final Context context, @Nullable final AttributeSet attrs) {
-        super(context, attrs);
-        init(context, attrs);
-    }
-
-    public FloatingActionsMenu(final Context context, @Nullable final AttributeSet attrs, final int defStyle) {
-        super(context, attrs, defStyle);
-        init(context, attrs);
-    }
-
-    private static int adjustForOvershoot(final int dimension) {
-        return dimension * 12 / 10;
-    }
-
-    public void addButton(final LabeledFloatingActionButton button) {
-        addView(button, mButtonsCount - 1);
-        mButtonsCount++;
-
-        if (mLabelsStyle != 0) {
-            createLabels();
-        }
-    }
-
-    public void collapse() {
-        collapse(false);
-    }
-
-    private void collapse(final boolean immediately) {
-        if (mExpanded) {
-            mExpanded = false;
-            mTouchDelegateGroup.setEnabled(false);
-            mCollapseAnimation.setDuration(immediately ? 0 : ANIMATION_DURATION);
-            mCollapseAnimation.start();
-            mExpandAnimation.cancel();
-
-            if (mListener != null) {
-                mListener.onMenuCollapsed();
-            }
-        }
-    }
-
-    public void collapseImmediately() {
-        collapse(true);
-    }
-
-    private void createAddButton(final Context context) {
-        final RotatingDrawable rotatingDrawable = new RotatingDrawable(ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_action_add_white, context.getTheme()));
-        mRotatingDrawable = rotatingDrawable;
-
-        final TimeInterpolator interpolator = new OvershootInterpolator();
-
-        final ObjectAnimator collapseAnimator = ObjectAnimator.ofFloat(rotatingDrawable, "rotation", EXPANDED_PLUS_ROTATION, COLLAPSED_PLUS_ROTATION);
-        final ObjectAnimator expandAnimator = ObjectAnimator.ofFloat(rotatingDrawable, "rotation", COLLAPSED_PLUS_ROTATION, EXPANDED_PLUS_ROTATION);
-
-        collapseAnimator.setInterpolator(interpolator);
-        expandAnimator.setInterpolator(interpolator);
-
-        mExpandAnimation.play(expandAnimator);
-        mCollapseAnimation.play(collapseAnimator);
-
-        mAddButton = new FloatingActionButton(context);
-        mAddButton.setImageDrawable(rotatingDrawable);
-        mAddButton.setId(R.id.fab_expand_menu_button);
-        mAddButton.setOnClickListener(v -> toggle());
-
-        addView(mAddButton, super.generateDefaultLayoutParams());
-        mButtonsCount++;
-    }
-
-    private void createLabels() {
-        final Context context = BROKEN_LABEL_STYLE ? getContext() : new ContextThemeWrapper(getContext(), mLabelsStyle);
-
-        for (int i = 0; i < mButtonsCount; i++) {
-            final FloatingActionButton button = (FloatingActionButton) getChildAt(i);
-
-            if (button instanceof LabeledFloatingActionButton) {
-                final String title = ((LabeledFloatingActionButton) button).getTitle();
-
-                final AppCompatTextView label = new AppCompatTextView(context);
-                if (!BROKEN_LABEL_STYLE)
-                    label.setTextAppearance(context, mLabelsStyle);
-                label.setText(title);
-                addView(label);
-
-                button.setTag(R.id.fab_label, label);
-            }
-        }
-    }
-
-    public void expand() {
-        if (!mExpanded) {
-            mExpanded = true;
-            mTouchDelegateGroup.setEnabled(true);
-            mCollapseAnimation.cancel();
-            mExpandAnimation.start();
-
-            if (mListener != null) {
-                mListener.onMenuExpanded();
-            }
-        }
-    }
-
-    private boolean expandsHorizontally() {
-        return mExpandDirection == EXPAND_LEFT || mExpandDirection == EXPAND_RIGHT;
-    }
-
-    @Override
-    protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
-        return new LayoutParams(super.generateDefaultLayoutParams());
-    }
-
-    @Override
-    public ViewGroup.LayoutParams generateLayoutParams(final AttributeSet attrs) {
-        return new LayoutParams(super.generateLayoutParams(attrs));
-    }
-
-    @Override
-    protected ViewGroup.LayoutParams generateLayoutParams(final ViewGroup.LayoutParams p) {
-        return new LayoutParams(super.generateLayoutParams(p));
-    }
-
-    public float getBehaviorYTranslation() {
-        return behaviorYTranslation;
-    }
-
-    public float getScrollYTranslation() {
-        return scrollYTranslation;
-    }
-
-    private void init(final Context context, @Nullable final AttributeSet attributeSet) {
-        mButtonSpacing = (int) (getResources().getDimension(R.dimen.fab_actions_spacing));
-        mLabelsMargin = getResources().getDimensionPixelSize(R.dimen.fab_labels_margin);
-        mLabelsVerticalOffset = getResources().getDimensionPixelSize(R.dimen.fab_shadow_offset);
-
-        mTouchDelegateGroup = new TouchDelegateGroup(this);
-        setTouchDelegate(mTouchDelegateGroup);
-
-        final TypedArray attr = context.obtainStyledAttributes(attributeSet, R.styleable.FloatingActionsMenu, 0, 0);
-        mExpandDirection = attr.getInt(R.styleable.FloatingActionsMenu_fab_expandDirection, EXPAND_UP);
-        mLabelsStyle = attr.getResourceId(R.styleable.FloatingActionsMenu_fab_labelStyle, 0);
-        mLabelsPosition = attr.getInt(R.styleable.FloatingActionsMenu_fab_labelsPosition, LABELS_ON_LEFT_SIDE);
-        attr.recycle();
-
-        if (mLabelsStyle != 0 && expandsHorizontally()) {
-            throw new IllegalStateException("Action labels in horizontal expand orientation are not supported");
-        }
-
-        createAddButton(context);
-    }
-
-    public boolean isExpanded() {
-        return mExpanded;
-    }
-
-    @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-
-        bringChildToFront(mAddButton);
-        mButtonsCount = getChildCount();
-
-        if (mLabelsStyle != 0) {
-            createLabels();
-        }
-    }
-
-    @Override
-    protected void onLayout(final boolean changed, final int l, final int t, final int r, final int b) {
-        switch (mExpandDirection) {
-            case EXPAND_UP:
-            case EXPAND_DOWN:
-                final boolean expandUp = mExpandDirection == EXPAND_UP;
-
-                if (changed) {
-                    mTouchDelegateGroup.clearTouchDelegates();
-                }
-
-                final int addButtonY = expandUp ? b - t - mAddButton.getMeasuredHeight() : 0;
-                // Ensure mAddButton is centered on the line where the buttons should be
-                final int buttonsHorizontalCenter = (mLabelsPosition == LABELS_ON_LEFT_SIDE
-                        ? r - l - mMaxButtonWidth / 2
-                        : mMaxButtonWidth / 2);
-                final int addButtonLeft = buttonsHorizontalCenter - mAddButton.getMeasuredWidth() / 2;
-                mAddButton.layout(addButtonLeft, addButtonY, addButtonLeft + mAddButton.getMeasuredWidth(), addButtonY + mAddButton.getMeasuredHeight());
-
-                final int labelsOffset = mMaxButtonWidth / 2 + mLabelsMargin;
-                final int labelsXNearButton = mLabelsPosition == LABELS_ON_LEFT_SIDE
-                        ? buttonsHorizontalCenter - labelsOffset
-                        : buttonsHorizontalCenter + labelsOffset;
-
-                int nextY = expandUp ?
-                        addButtonY - mButtonSpacing :
-                        addButtonY + mAddButton.getMeasuredHeight() + mButtonSpacing;
-
-                for (int i = mButtonsCount - 1; i >= 0; i--) {
-                    final View child = getChildAt(i);
-
-                    if (child == mAddButton || child.getVisibility() == GONE) continue;
-
-                    final int childX = buttonsHorizontalCenter - child.getMeasuredWidth() / 2;
-                    final int childY = expandUp ? nextY - child.getMeasuredHeight() : nextY;
-                    child.layout(childX, childY, childX + child.getMeasuredWidth(), childY + child.getMeasuredHeight());
-
-                    final float collapsedTranslation = addButtonY - childY;
-                    final float expandedTranslation = 0f;
-
-                    child.setTranslationY(mExpanded ? expandedTranslation : collapsedTranslation);
-                    child.setAlpha(mExpanded ? 1f : 0f);
-
-                    final LayoutParams params = (LayoutParams) child.getLayoutParams();
-                    params.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
-                    params.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
-                    params.setAnimationsTarget(child);
-
-                    final View label = (View) child.getTag(R.id.fab_label);
-                    if (label != null) {
-                        final int labelXAwayFromButton = mLabelsPosition == LABELS_ON_LEFT_SIDE
-                                ? labelsXNearButton - label.getMeasuredWidth()
-                                : labelsXNearButton + label.getMeasuredWidth();
-
-                        final int labelLeft = mLabelsPosition == LABELS_ON_LEFT_SIDE
-                                ? labelXAwayFromButton
-                                : labelsXNearButton;
-
-                        final int labelRight = mLabelsPosition == LABELS_ON_LEFT_SIDE
-                                ? labelsXNearButton
-                                : labelXAwayFromButton;
-
-                        final int labelTop = childY - mLabelsVerticalOffset + (child.getMeasuredHeight() - label.getMeasuredHeight()) / 2;
-
-                        label.layout(labelLeft, labelTop, labelRight, labelTop + label.getMeasuredHeight());
-
-                        touchArea.set(Math.min(childX, labelLeft),
-                                childY - mButtonSpacing / 2,
-                                Math.max(childX + child.getMeasuredWidth(), labelRight),
-                                childY + child.getMeasuredHeight() + mButtonSpacing / 2);
-                        mTouchDelegateGroup.addTouchDelegate(new TouchDelegate(new Rect(touchArea), child));
-
-                        label.setTranslationY(mExpanded ? expandedTranslation : collapsedTranslation);
-                        label.setAlpha(mExpanded ? 1f : 0f);
-
-                        final LayoutParams labelParams = (LayoutParams) label.getLayoutParams();
-                        labelParams.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
-                        labelParams.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
-                        labelParams.setAnimationsTarget(label);
-                    }
-
-                    nextY = expandUp ?
-                            childY - mButtonSpacing :
-                            childY + child.getMeasuredHeight() + mButtonSpacing;
-                }
-                break;
-
-            case EXPAND_LEFT:
-            case EXPAND_RIGHT:
-                final boolean expandLeft = mExpandDirection == EXPAND_LEFT;
-
-                final int addButtonX = expandLeft ? r - l - mAddButton.getMeasuredWidth() : 0;
-                // Ensure mAddButton is centered on the line where the buttons should be
-                final int addButtonTop = b - t - mMaxButtonHeight + (mMaxButtonHeight - mAddButton.getMeasuredHeight()) / 2;
-                mAddButton.layout(addButtonX, addButtonTop, addButtonX + mAddButton.getMeasuredWidth(), addButtonTop + mAddButton.getMeasuredHeight());
-
-                int nextX = expandLeft ?
-                        addButtonX - mButtonSpacing :
-                        addButtonX + mAddButton.getMeasuredWidth() + mButtonSpacing;
-
-                for (int i = mButtonsCount - 1; i >= 0; i--) {
-                    final View child = getChildAt(i);
-
-                    if (child == mAddButton || child.getVisibility() == GONE) continue;
-
-                    final int childX = expandLeft ? nextX - child.getMeasuredWidth() : nextX;
-                    final int childY = addButtonTop + (mAddButton.getMeasuredHeight() - child.getMeasuredHeight()) / 2;
-                    child.layout(childX, childY, childX + child.getMeasuredWidth(), childY + child.getMeasuredHeight());
-
-                    final float collapsedTranslation = addButtonX - childX;
-                    final float expandedTranslation = 0f;
-
-                    child.setTranslationX(mExpanded ? expandedTranslation : collapsedTranslation);
-                    child.setAlpha(mExpanded ? 1f : 0f);
-
-                    final LayoutParams params = (LayoutParams) child.getLayoutParams();
-                    params.mCollapseDir.setFloatValues(expandedTranslation, collapsedTranslation);
-                    params.mExpandDir.setFloatValues(collapsedTranslation, expandedTranslation);
-                    params.setAnimationsTarget(child);
-
-                    nextX = expandLeft ?
-                            childX - mButtonSpacing :
-                            childX + child.getMeasuredWidth() + mButtonSpacing;
-                }
-
-                break;
-        }
-    }
-
-    @Override
-    protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {
-        measureChildren(widthMeasureSpec, heightMeasureSpec);
-
-        int width = 0;
-        int height = 0;
-
-        mMaxButtonWidth = 0;
-        mMaxButtonHeight = 0;
-        int maxLabelWidth = 0;
-
-        for (int i = 0; i < mButtonsCount; i++) {
-            final View child = getChildAt(i);
-
-            if (child.getVisibility() == GONE) {
-                continue;
-            }
-
-            switch (mExpandDirection) {
-                case EXPAND_UP:
-                case EXPAND_DOWN:
-                    mMaxButtonWidth = Math.max(mMaxButtonWidth, child.getMeasuredWidth());
-                    height += child.getMeasuredHeight();
-                    break;
-                case EXPAND_LEFT:
-                case EXPAND_RIGHT:
-                    width += child.getMeasuredWidth();
-                    mMaxButtonHeight = Math.max(mMaxButtonHeight, child.getMeasuredHeight());
-                    break;
-            }
-
-            if (!expandsHorizontally()) {
-                final TextView label = (TextView) child.getTag(R.id.fab_label);
-                if (label != null) {
-                    maxLabelWidth = Math.max(maxLabelWidth, label.getMeasuredWidth());
-                }
-            }
-        }
-
-        if (expandsHorizontally()) {
-            height = mMaxButtonHeight;
-        } else {
-            width = mMaxButtonWidth + (maxLabelWidth > 0 ? maxLabelWidth + mLabelsMargin : 0);
-        }
-
-        switch (mExpandDirection) {
-            case EXPAND_UP:
-            case EXPAND_DOWN:
-                height += mButtonSpacing * (mButtonsCount - 1);
-                height = adjustForOvershoot(height);
-                break;
-            case EXPAND_LEFT:
-            case EXPAND_RIGHT:
-                width += mButtonSpacing * (mButtonsCount - 1);
-                width = adjustForOvershoot(width);
-                break;
-        }
-
-        setMeasuredDimension(width, height);
-    }
-
-    @Override
-    public void onRestoreInstanceState(final Parcelable state) {
-        if (state instanceof SavedState) {
-            final SavedState savedState = (SavedState) state;
-            mExpanded = savedState.mExpanded;
-            mTouchDelegateGroup.setEnabled(mExpanded);
-
-            if (mRotatingDrawable != null) {
-                mRotatingDrawable.setRotation(mExpanded ? EXPANDED_PLUS_ROTATION : COLLAPSED_PLUS_ROTATION);
-            }
-
-            super.onRestoreInstanceState(savedState.getSuperState());
-        } else {
-            super.onRestoreInstanceState(state);
-        }
-    }
-
-    @Override
-    public Parcelable onSaveInstanceState() {
-        final Parcelable superState = super.onSaveInstanceState();
-        final SavedState savedState = new SavedState(superState);
-        savedState.mExpanded = mExpanded;
-
-        return savedState;
-    }
-
-    public void removeButton(final LabeledFloatingActionButton button) {
-        removeView(button.getLabelView());
-        removeView(button);
-        button.setTag(R.id.fab_label, null);
-        mButtonsCount--;
-    }
-
-    public void setBehaviorYTranslation(final float behaviorYTranslation) {
-        this.behaviorYTranslation = behaviorYTranslation;
-        setTranslationY(behaviorYTranslation + scrollYTranslation);
-    }
-
-    @Override
-    public void setEnabled(final boolean enabled) {
-        super.setEnabled(enabled);
-
-        mAddButton.setEnabled(enabled);
-    }
-
-    public void setOnFloatingActionsMenuUpdateListener(final OnFloatingActionsMenuUpdateListener listener) {
-        mListener = listener;
-    }
-
-    public void setScrollYTranslation(final float scrollYTranslation) {
-        this.scrollYTranslation = scrollYTranslation;
-        setTranslationY(behaviorYTranslation + scrollYTranslation);
-    }
-
-    public void toggle() {
-        if (mExpanded) {
-            collapse();
-        } else {
-            expand();
-        }
-    }
-
-    public interface OnFloatingActionsMenuUpdateListener {
-        void onMenuCollapsed();
-
-        void onMenuExpanded();
-    }
-
-    private static class RotatingDrawable extends LayerDrawable {
-        private float mRotation;
-
-        RotatingDrawable(final Drawable drawable) {
-            super(new Drawable[]{drawable});
-        }
-
-        @Override
-        public void draw(final Canvas canvas) {
-            canvas.save();
-            canvas.rotate(mRotation, getBounds().centerX(), getBounds().centerY());
-            super.draw(canvas);
-            canvas.restore();
-        }
-
-        @SuppressWarnings("UnusedDeclaration")
-        public float getRotation() {
-            return mRotation;
-        }
-
-        @Keep
-        @SuppressWarnings("UnusedDeclaration")
-        public void setRotation(final float rotation) {
-            mRotation = rotation;
-            invalidateSelf();
-        }
-    }
-
-    public static class SavedState extends BaseSavedState {
-        public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
-
-            @Override
-            public SavedState createFromParcel(final Parcel in) {
-                return new SavedState(in);
-            }
-
-            @Override
-            public SavedState[] newArray(final int size) {
-                return new SavedState[size];
-            }
-        };
-        private boolean mExpanded;
-
-        public SavedState(final Parcelable parcel) {
-            super(parcel);
-        }
-
-        private SavedState(final Parcel in) {
-            super(in);
-            mExpanded = in.readInt() == 1;
-        }
-
-        @Override
-        public void writeToParcel(final Parcel out, final int flags) {
-            super.writeToParcel(out, flags);
-            out.writeInt(mExpanded ? 1 : 0);
-        }
-    }
-
-    private class LayoutParams extends ViewGroup.LayoutParams {
-
-        private final ObjectAnimator mCollapseAlpha = new ObjectAnimator();
-        private final ObjectAnimator mCollapseDir = new ObjectAnimator();
-        private final ObjectAnimator mExpandAlpha = new ObjectAnimator();
-        private final ObjectAnimator mExpandDir = new ObjectAnimator();
-        private boolean animationsSetToPlay;
-
-        LayoutParams(final ViewGroup.LayoutParams source) {
-            super(source);
-
-            mExpandDir.setInterpolator(EXPAND_INTERPOLATOR);
-            mExpandAlpha.setInterpolator(ALPHA_EXPAND_INTERPOLATOR);
-            mCollapseDir.setInterpolator(COLLAPSE_INTERPOLATOR);
-            mCollapseAlpha.setInterpolator(COLLAPSE_INTERPOLATOR);
-
-            mCollapseAlpha.setProperty(View.ALPHA);
-            mCollapseAlpha.setFloatValues(1f, 0f);
-
-            mExpandAlpha.setProperty(View.ALPHA);
-            mExpandAlpha.setFloatValues(0f, 1f);
-
-            switch (mExpandDirection) {
-                case EXPAND_UP:
-                case EXPAND_DOWN:
-                    mCollapseDir.setProperty(View.TRANSLATION_Y);
-                    mExpandDir.setProperty(View.TRANSLATION_Y);
-                    break;
-                case EXPAND_LEFT:
-                case EXPAND_RIGHT:
-                    mCollapseDir.setProperty(View.TRANSLATION_X);
-                    mExpandDir.setProperty(View.TRANSLATION_X);
-                    break;
-            }
-        }
-
-        private void addLayerTypeListener(final Animator animator, final View view) {
-            animator.addListener(new AnimatorListenerAdapter() {
-                @Override
-                public void onAnimationEnd(final Animator animation) {
-                    view.setLayerType(LAYER_TYPE_NONE, null);
-                }
-
-                @Override
-                public void onAnimationStart(final Animator animation) {
-                    view.setLayerType(LAYER_TYPE_HARDWARE, null);
-                }
-            });
-        }
-
-        public void setAnimationsTarget(final View view) {
-            mCollapseAlpha.setTarget(view);
-            mCollapseDir.setTarget(view);
-            mExpandAlpha.setTarget(view);
-            mExpandDir.setTarget(view);
-
-            // Now that the animations have targets, set them to be played
-            if (!animationsSetToPlay) {
-                addLayerTypeListener(mExpandDir, view);
-                addLayerTypeListener(mCollapseDir, view);
-
-                mCollapseAnimation.play(mCollapseAlpha);
-                mCollapseAnimation.play(mCollapseDir);
-                mExpandAnimation.play(mExpandAlpha);
-                mExpandAnimation.play(mExpandDir);
-                animationsSetToPlay = true;
-            }
-        }
-    }
-}
diff --git a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenuRecyclerViewScrollListener.java b/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenuRecyclerViewScrollListener.java
deleted file mode 100644
index e1af4484..00000000
--- a/app/src/main/java/com/wireguard/android/widget/fab/FloatingActionsMenuRecyclerViewScrollListener.java
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget.fab;
-
-import androidx.recyclerview.widget.RecyclerView;
-
-public class FloatingActionsMenuRecyclerViewScrollListener extends RecyclerView.OnScrollListener {
-    private static final float SCALE_FACTOR = 1.5f;
-    private final FloatingActionsMenu menu;
-
-    public FloatingActionsMenuRecyclerViewScrollListener(final FloatingActionsMenu menu) {
-        this.menu = menu;
-    }
-
-    private static float bound(final float min, final float proposal, final float max) {
-        return Math.min(max, Math.max(min, proposal));
-    }
-
-    @Override
-    public void onScrolled(final RecyclerView recyclerView, final int dx, final int dy) {
-        super.onScrolled(recyclerView, dx, dy);
-        menu.setScrollYTranslation(bound(0, menu.getScrollYTranslation() + dy * SCALE_FACTOR, menu.getMeasuredHeight() - menu.getTranslationY()));
-    }
-}
diff --git a/app/src/main/java/com/wireguard/android/widget/fab/LabeledFloatingActionButton.java b/app/src/main/java/com/wireguard/android/widget/fab/LabeledFloatingActionButton.java
deleted file mode 100644
index be94a6e5..00000000
--- a/app/src/main/java/com/wireguard/android/widget/fab/LabeledFloatingActionButton.java
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright © 2014 Jerzy Chalupski
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget.fab;
-
-import android.content.Context;
-import android.content.res.TypedArray;
-import androidx.annotation.Nullable;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-import android.util.AttributeSet;
-import android.widget.TextView;
-
-import com.wireguard.android.R;
-
-public class LabeledFloatingActionButton extends FloatingActionButton {
-
-    @Nullable private final String title;
-
-    public LabeledFloatingActionButton(final Context context) {
-        this(context, null);
-    }
-
-    public LabeledFloatingActionButton(final Context context, @Nullable final AttributeSet attrs) {
-        this(context, attrs, 0);
-    }
-
-    public LabeledFloatingActionButton(final Context context, @Nullable final AttributeSet attrs, final int defStyle) {
-        super(context, attrs, defStyle);
-
-        final TypedArray attr = context.obtainStyledAttributes(attrs, R.styleable.LabeledFloatingActionButton, 0, 0);
-        title = attr.getString(R.styleable.LabeledFloatingActionButton_fab_title);
-        attr.recycle();
-    }
-
-    @Nullable
-    TextView getLabelView() {
-        return (TextView) getTag(R.id.fab_label);
-    }
-
-    @Nullable
-    public String getTitle() {
-        return title;
-    }
-
-    @Override
-    public void setVisibility(final int visibility) {
-        final TextView label = getLabelView();
-        if (label != null) {
-            label.setVisibility(visibility);
-        }
-
-        super.setVisibility(visibility);
-    }
-
-}
diff --git a/app/src/main/java/com/wireguard/android/widget/fab/TouchDelegateGroup.java b/app/src/main/java/com/wireguard/android/widget/fab/TouchDelegateGroup.java
deleted file mode 100644
index e16d1d3e..00000000
--- a/app/src/main/java/com/wireguard/android/widget/fab/TouchDelegateGroup.java
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright © 2014 Jerzy Chalupski
- * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
- * SPDX-License-Identifier: Apache-2.0
- */
-
-package com.wireguard.android.widget.fab;
-
-import android.graphics.Rect;
-import androidx.annotation.Nullable;
-import android.view.MotionEvent;
-import android.view.TouchDelegate;
-import android.view.View;
-
-import java.util.ArrayList;
-import java.util.Collection;
-
-public class TouchDelegateGroup extends TouchDelegate {
-    private static final Rect USELESS_HACKY_RECT = new Rect();
-    private final Collection<TouchDelegate> mTouchDelegates = new ArrayList<>();
-    @Nullable private TouchDelegate mCurrentTouchDelegate;
-    private boolean mEnabled;
-
-    public TouchDelegateGroup(final View uselessHackyView) {
-        super(USELESS_HACKY_RECT, uselessHackyView);
-    }
-
-    public void addTouchDelegate(final TouchDelegate touchDelegate) {
-        mTouchDelegates.add(touchDelegate);
-    }
-
-    public void clearTouchDelegates() {
-        mTouchDelegates.clear();
-        mCurrentTouchDelegate = null;
-    }
-
-    @Override
-    public boolean onTouchEvent(final MotionEvent event) {
-        if (!mEnabled)
-            return false;
-
-        TouchDelegate delegate = null;
-
-        switch (event.getAction()) {
-            case MotionEvent.ACTION_DOWN:
-                for (final TouchDelegate touchDelegate : mTouchDelegates) {
-                    if (touchDelegate.onTouchEvent(event)) {
-                        mCurrentTouchDelegate = touchDelegate;
-                        return true;
-                    }
-                }
-                break;
-
-            case MotionEvent.ACTION_MOVE:
-                delegate = mCurrentTouchDelegate;
-                break;
-
-            case MotionEvent.ACTION_CANCEL:
-            case MotionEvent.ACTION_UP:
-                delegate = mCurrentTouchDelegate;
-                mCurrentTouchDelegate = null;
-                break;
-        }
-
-        return delegate != null && delegate.onTouchEvent(event);
-    }
-
-    public void removeTouchDelegate(final TouchDelegate touchDelegate) {
-        mTouchDelegates.remove(touchDelegate);
-        if (mCurrentTouchDelegate == touchDelegate) {
-            mCurrentTouchDelegate = null;
-        }
-    }
-
-    public void setEnabled(final boolean enabled) {
-        mEnabled = enabled;
-    }
-}