Create interface for different transition types.

Bug: 187542491
Test: rebuild
Change-Id: Id80e2a7401498970e2c339a10f119ab3d0c314bf

1 files changed, 21 insertions, 0 deletions

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 ed447f873610..3d9396492643 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;