Merge pull request #72 from miDeb/top_tabtray_animation

Fix top tab tray entry/exit animations

app/src/main/java/org/mozilla/fenix/tabtray/TabTrayDialogFragment.kt

@@ -169,6 +169,10 @@ class TabTrayDialogFragment : AppCompatDialogFragment(), UserInteractionHandler
         val activity = activity as HomeActivity
         val isPrivate = activity.browsingModeManager.mode.isPrivate
 
+        if (requireContext().settings().useTopTabsTray) {
+            dialog?.window?.attributes?.windowAnimations = R.style.TopTabTrayAnimation
+        }
+
         val thumbnailLoader = ThumbnailLoader(requireContext().components.core.thumbnailStorage)
         val adapter = FenixTabsAdapter(requireContext(), thumbnailLoader)
         currentOrientation = resources.configuration.orientation

app/src/main/res/anim/fade_in_down.xml

@@ -0,0 +1,14 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+        License, v. 2.0. If a copy of the MPL was not distributed with this
+        file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <alpha
+        android:interpolator="@android:interpolator/decelerate_quad"
+        android:fromAlpha="0" android:toAlpha="1"
+        android:duration="150" />
+    <translate
+        android:interpolator="@android:interpolator/decelerate_quad"
+        android:fromYDelta="-7%" android:toYDelta="0%"
+        android:duration="150"/>
+</set>

app/src/main/res/anim/fade_out_up.xml

@@ -0,0 +1,14 @@
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+        License, v. 2.0. If a copy of the MPL was not distributed with this
+        file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <alpha
+        android:interpolator="@android:interpolator/accelerate_quad"
+        android:fromAlpha="1" android:toAlpha="0"
+        android:duration="125" />
+    <translate
+        android:interpolator="@android:interpolator/accelerate_quad"
+        android:fromYDelta="0%" android:toYDelta="-7%"
+        android:duration="125"/>
+</set>

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

@@ -274,6 +274,11 @@
         <item name="android:windowExitAnimation">@anim/fade_out</item>
     </style>
 
+    <style name="TopTabTrayAnimation">
+        <item name="android:windowEnterAnimation">@anim/fade_in_down</item>
+        <item name="android:windowExitAnimation">@anim/fade_out_up</item>
+    </style>
+
     <!-- UI button styling -->
     <style name="NeutralButton" parent="Widget.MaterialComponents.Button.TextButton">
         <item name="iconTint">@color/button_text_color</item>