From 59760461ac67a7894b9016162f133b45e301dbb7 Mon Sep 17 00:00:00 2001
From: Yi-Ling Chuang <emilychuang@google.com>
Date: Fri, 21 May 2021 12:35:05 +0800
Subject: [PATCH] Create interface for different transition types.

Bug: 187542491
Test: rebuild
Change-Id: Id80e2a7401498970e2c339a10f119ab3d0c314bf
---
 .../transition/SettingsTransitionHelper.java  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/packages/SettingsLib/SettingsTransition/src/com/android/settingslib/transition/SettingsTransitionHelper.java b/packages/SettingsLib/SettingsTransition/src/com/android/settingslib/transition/SettingsTransitionHelper.java
index ed447f8736101..3d93964926431 100644
--- a/packages/SettingsLib/SettingsTransition/src/com/android/settingslib/transition/SettingsTransitionHelper.java
+++ b/packages/SettingsLib/SettingsTransition/src/com/android/settingslib/transition/SettingsTransitionHelper.java
@@ -16,6 +16,7 @@
 
 package com.android.settingslib.transition;
 
+import androidx.annotation.IntDef;
 import android.app.Activity;
 import android.content.Context;
 import android.util.Log;
@@ -29,11 +30,31 @@ import com.google.android.material.transition.platform.FadeThroughProvider;
 import com.google.android.material.transition.platform.MaterialSharedAxis;
 import com.google.android.material.transition.platform.SlideDistanceProvider;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
 /**
  * A helper class to apply Settings Transition
  */
 public class SettingsTransitionHelper {
 
+    /**
+     * Flags indicating the type of the transition.
+     */
+    @IntDef({
+            TransitionType.TRANSITION_NONE,
+            TransitionType.TRANSITION_SHARED_AXIS,
+            TransitionType.TRANSITION_SLIDE,
+            TransitionType.TRANSITION_FADE
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface TransitionType {
+        int TRANSITION_NONE = -1;
+        int TRANSITION_SHARED_AXIS = 0;
+        int TRANSITION_SLIDE = 1;
+        int TRANSITION_FADE = 2;
+    }
+
     private static final String TAG = "SettingsTransitionHelper";
     private static final long DURATION = 450L;
     private static final float FADE_THROUGH_THRESHOLD = 0.22F;