Merge "New naming for NestedScrollBehavior" into main
diff --git a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/NestedScrollToScene.kt b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/NestedScrollToScene.kt
index 2986504..ded6cc1 100644
--- a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/NestedScrollToScene.kt
+++ b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/NestedScrollToScene.kt
@@ -44,22 +44,22 @@
      * Overscroll will only be used by the [SceneTransitionLayout] to move to the next scene if the
      * gesture begins at the edge of the scrollable component (so that a scroll in that direction
      * can no longer be consumed). If the gesture is partially consumed by the scrollable component,
-     * there will be NO overscroll effect between scenes.
+     * there will be NO preview of the next scene.
      *
      * In addition, during scene transitions, scroll events are consumed by the
      * [SceneTransitionLayout] instead of the scrollable component.
      */
-    EdgeNoOverscroll(canStartOnPostFling = false),
+    EdgeNoPreview(canStartOnPostFling = false),
 
     /**
      * Overscroll will only be used by the [SceneTransitionLayout] to move to the next scene if the
      * gesture begins at the edge of the scrollable component. If the gesture is partially consumed
-     * by the scrollable component, there will be an overscroll effect between scenes.
+     * by the scrollable component, there will be a preview of the next scene.
      *
      * In addition, during scene transitions, scroll events are consumed by the
      * [SceneTransitionLayout] instead of the scrollable component.
      */
-    EdgeWithOverscroll(canStartOnPostFling = true),
+    EdgeWithPreview(canStartOnPostFling = true),
 
     /**
      * Any overscroll will be used by the [SceneTransitionLayout] to move to the next scene.
@@ -67,7 +67,7 @@
      * In addition, during scene transitions, scroll events are consumed by the
      * [SceneTransitionLayout] instead of the scrollable component.
      */
-    Always(canStartOnPostFling = true),
+    EdgeAlways(canStartOnPostFling = true),
 }
 
 internal fun Modifier.nestedScrollToScene(
diff --git a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneGestureHandler.kt b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneGestureHandler.kt
index 661ac9a..212c9eb6 100644
--- a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneGestureHandler.kt
+++ b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneGestureHandler.kt
@@ -577,15 +577,15 @@
                         canChangeScene = false // unused: added for consistency
                         false
                     }
-                    NestedScrollBehavior.EdgeNoOverscroll -> {
+                    NestedScrollBehavior.EdgeNoPreview -> {
                         canChangeScene = isZeroOffset
                         isZeroOffset && hasNextScene(offsetAvailable)
                     }
-                    NestedScrollBehavior.EdgeWithOverscroll -> {
+                    NestedScrollBehavior.EdgeWithPreview -> {
                         canChangeScene = isZeroOffset
                         hasNextScene(offsetAvailable)
                     }
-                    NestedScrollBehavior.Always -> {
+                    NestedScrollBehavior.EdgeAlways -> {
                         canChangeScene = true
                         hasNextScene(offsetAvailable)
                     }
diff --git a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitionLayout.kt b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitionLayout.kt
index 07add77..afa184b 100644
--- a/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitionLayout.kt
+++ b/packages/SystemUI/compose/scene/src/com/android/compose/animation/scene/SceneTransitionLayout.kt
@@ -132,8 +132,8 @@
      */
     fun Modifier.nestedScrollToScene(
         orientation: Orientation,
-        startBehavior: NestedScrollBehavior = NestedScrollBehavior.EdgeNoOverscroll,
-        endBehavior: NestedScrollBehavior = NestedScrollBehavior.EdgeNoOverscroll,
+        startBehavior: NestedScrollBehavior = NestedScrollBehavior.EdgeNoPreview,
+        endBehavior: NestedScrollBehavior = NestedScrollBehavior.EdgeNoPreview,
     ): Modifier
 
     /**
diff --git a/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/SceneGestureHandlerTest.kt b/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/SceneGestureHandlerTest.kt
index b407165..aa942e0 100644
--- a/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/SceneGestureHandlerTest.kt
+++ b/packages/SystemUI/compose/scene/tests/src/com/android/compose/animation/scene/SceneGestureHandlerTest.kt
@@ -29,10 +29,10 @@
 import androidx.compose.ui.unit.IntSize
 import androidx.compose.ui.unit.Velocity
 import androidx.test.ext.junit.runners.AndroidJUnit4
-import com.android.compose.animation.scene.NestedScrollBehavior.Always
 import com.android.compose.animation.scene.NestedScrollBehavior.DuringTransitionBetweenScenes
-import com.android.compose.animation.scene.NestedScrollBehavior.EdgeNoOverscroll
-import com.android.compose.animation.scene.NestedScrollBehavior.EdgeWithOverscroll
+import com.android.compose.animation.scene.NestedScrollBehavior.EdgeAlways
+import com.android.compose.animation.scene.NestedScrollBehavior.EdgeNoPreview
+import com.android.compose.animation.scene.NestedScrollBehavior.EdgeWithPreview
 import com.android.compose.animation.scene.TestScenes.SceneA
 import com.android.compose.animation.scene.TestScenes.SceneB
 import com.android.compose.animation.scene.TestScenes.SceneC
@@ -439,14 +439,14 @@
 
     @Test
     fun onInitialPreScroll_EdgeWithOverscroll_doNotChangeState() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         nestedScroll.onPreScroll(available = offsetY10, source = NestedScrollSource.Drag)
         assertIdle(currentScene = SceneA)
     }
 
     @Test
     fun onPostScrollWithNothingAvailable_EdgeWithOverscroll_doNotChangeState() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         val consumed =
             nestedScroll.onPostScroll(
                 consumed = Offset.Zero,
@@ -460,7 +460,7 @@
 
     @Test
     fun onPostScrollWithSomethingAvailable_startSceneTransition() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         val consumed =
             nestedScroll.onPostScroll(
                 consumed = Offset.Zero,
@@ -489,7 +489,7 @@
 
     @Test
     fun afterSceneTransitionIsStarted_interceptPreScrollEvents() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         nestedScroll.scroll(available = offsetY10)
         assertTransition(currentScene = SceneA)
 
@@ -517,7 +517,7 @@
         firstScroll: Float,
         secondScroll: Float
     ) {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         // start scene transition
         nestedScroll.scroll(available = Offset(0f, SCREEN_SIZE * firstScroll))
 
@@ -570,7 +570,7 @@
 
     @Test
     fun onPreFling_velocityLowerThanThreshold_remainSameScene() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         nestedScroll.scroll(available = offsetY10)
         assertTransition(currentScene = SceneA)
 
@@ -602,7 +602,7 @@
 
     @Test
     fun flingAfterScroll_EdgeNoOverscroll_goToNextScene() = runGestureTest {
-        flingAfterScroll(use = EdgeNoOverscroll, idleAfterScroll = false)
+        flingAfterScroll(use = EdgeNoPreview, idleAfterScroll = false)
 
         assertTransition(currentScene = SceneC)
 
@@ -613,7 +613,7 @@
 
     @Test
     fun flingAfterScroll_EdgeWithOverscroll_goToNextScene() = runGestureTest {
-        flingAfterScroll(use = EdgeWithOverscroll, idleAfterScroll = false)
+        flingAfterScroll(use = EdgeWithPreview, idleAfterScroll = false)
 
         assertTransition(currentScene = SceneC)
 
@@ -624,7 +624,7 @@
 
     @Test
     fun flingAfterScroll_Always_goToNextScene() = runGestureTest {
-        flingAfterScroll(use = Always, idleAfterScroll = false)
+        flingAfterScroll(use = EdgeAlways, idleAfterScroll = false)
 
         assertTransition(currentScene = SceneC)
 
@@ -658,14 +658,14 @@
 
     @Test
     fun flingAfterScrollStartedInScene_EdgeNoOverscroll_doNothing() = runGestureTest {
-        flingAfterScrollStartedInScene(use = EdgeNoOverscroll, idleAfterScroll = true)
+        flingAfterScrollStartedInScene(use = EdgeNoPreview, idleAfterScroll = true)
 
         assertIdle(currentScene = SceneA)
     }
 
     @Test
     fun flingAfterScrollStartedInScene_EdgeWithOverscroll_doOverscrollAnimation() = runGestureTest {
-        flingAfterScrollStartedInScene(use = EdgeWithOverscroll, idleAfterScroll = false)
+        flingAfterScrollStartedInScene(use = EdgeWithPreview, idleAfterScroll = false)
 
         assertTransition(currentScene = SceneA)
 
@@ -676,7 +676,7 @@
 
     @Test
     fun flingAfterScrollStartedInScene_Always_goToNextScene() = runGestureTest {
-        flingAfterScrollStartedInScene(use = Always, idleAfterScroll = false)
+        flingAfterScrollStartedInScene(use = EdgeAlways, idleAfterScroll = false)
 
         assertTransition(currentScene = SceneC)
 
@@ -699,14 +699,14 @@
 
     @Test
     fun beforeNestedScrollStart_stop_shouldBeIgnored() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithOverscroll)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeWithPreview)
         nestedScroll.onPreFling(Velocity(0f, velocityThreshold))
         assertIdle(currentScene = SceneA)
     }
 
     @Test
     fun startNestedScrollWhileDragging() = runGestureTest {
-        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = Always)
+        val nestedScroll = nestedScrollConnection(nestedScrollBehavior = EdgeAlways)
         draggable.onDragStarted()
         assertTransition(currentScene = SceneA)