Update EXTENSIONS_VERSION_CURRENT_PLATFORM to 7

Bug: 340583542
Bug: 293658614
Flag: com.android.window.flags.activity_embedding_animation_customization_flag
Test: atest WindowExtensionsImplTest WindowExtensionsTest SplitControllerTest
Change-Id: I48802c9f6bbdf657061b3889eff416a5e6bef552
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/WindowExtensionsImpl.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/WindowExtensionsImpl.java
index ecf4720..f8cfb20 100644
--- a/libs/WindowManager/Jetpack/src/androidx/window/extensions/WindowExtensionsImpl.java
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/WindowExtensionsImpl.java
@@ -39,6 +39,8 @@
 import androidx.window.extensions.layout.WindowLayoutComponent;
 import androidx.window.extensions.layout.WindowLayoutComponentImpl;
 
+import com.android.window.flags.Flags;
+
 import java.util.Objects;
 
 
@@ -55,11 +57,9 @@
      */
     private static final int NO_LEVEL_OVERRIDE = -1;
 
-    /**
-     * The min version of the WM Extensions that must be supported in the current platform version.
-     */
-    @VisibleForTesting
-    static final int EXTENSIONS_VERSION_CURRENT_PLATFORM = 6;
+    private static final int EXTENSIONS_VERSION_V7 = 7;
+
+    private static final int EXTENSIONS_VERSION_V6 = 6;
 
     private final Object mLock = new Object();
     private volatile DeviceStateManagerFoldingFeatureProducer mFoldingFeatureProducer;
@@ -67,7 +67,6 @@
     private volatile SplitController mSplitController;
     private volatile WindowAreaComponent mWindowAreaComponent;
 
-    private final int mVersion = EXTENSIONS_VERSION_CURRENT_PLATFORM;
     private final boolean mIsActivityEmbeddingEnabled;
 
     WindowExtensionsImpl() {
@@ -76,9 +75,22 @@
         Log.i(TAG, generateLogMessage());
     }
 
+    /**
+     * The min version of the WM Extensions that must be supported in the current platform version.
+     */
+    @VisibleForTesting
+    static int getExtensionsVersionCurrentPlatform() {
+        if (Flags.activityEmbeddingAnimationCustomizationFlag()) {
+            // Activity Embedding animation customization is the only major feature for v7.
+            return EXTENSIONS_VERSION_V7;
+        } else {
+            return EXTENSIONS_VERSION_V6;
+        }
+    }
+
     private String generateLogMessage() {
         final StringBuilder logBuilder = new StringBuilder("Initializing Window Extensions, "
-                + "vendor API level=" + mVersion);
+                + "vendor API level=" + getExtensionsVersionCurrentPlatform());
         final int levelOverride = getLevelOverride();
         if (levelOverride != NO_LEVEL_OVERRIDE) {
             logBuilder.append(", override to ").append(levelOverride);
@@ -91,7 +103,9 @@
     @Override
     public int getVendorApiLevel() {
         final int levelOverride = getLevelOverride();
-        return (levelOverride != NO_LEVEL_OVERRIDE) ? levelOverride : mVersion;
+        return (levelOverride != NO_LEVEL_OVERRIDE)
+                ? levelOverride
+                : getExtensionsVersionCurrentPlatform();
     }
 
     private int getLevelOverride() {
diff --git a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/WindowExtensionsTest.java b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/WindowExtensionsTest.java
index c5aaddc..1a7090d 100644
--- a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/WindowExtensionsTest.java
+++ b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/WindowExtensionsTest.java
@@ -16,7 +16,7 @@
 
 package androidx.window.extensions;
 
-import static androidx.window.extensions.WindowExtensionsImpl.EXTENSIONS_VERSION_CURRENT_PLATFORM;
+import static androidx.window.extensions.WindowExtensionsImpl.getExtensionsVersionCurrentPlatform;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -59,7 +59,7 @@
     @Test
     public void testGetVendorApiLevel_extensionsEnabled_matchesCurrentVersion() {
         assumeTrue(WindowManager.hasWindowExtensionsEnabled());
-        assertThat(mVersion).isEqualTo(EXTENSIONS_VERSION_CURRENT_PLATFORM);
+        assertThat(mVersion).isEqualTo(getExtensionsVersionCurrentPlatform());
     }
 
     @Test