DeviceConfig for Chooser update-delay duration.

For more information, see go/sharesheet-list-view-update-delay.

Bug: 224816815
Test: `atest ChooserActivityTest`. The duration can be manually
configured by `adb shell device_config put systemui
sharesheet_list_view_update_delay n` to set a delay of n milliseconds.
With a timeout of 250 (as it was before this change), all the tests
still pass. With a timeout of 0, all tests pass but one (as described in
the doc linked above) -- a potential fix for that test will follow in a
subsequent CL.

Change-Id: Ia5edfe391b135659d2fd8126069c5cd6ce15653b

core/java/com/android/internal/app/ChooserActivity.java

@@ -220,9 +220,6 @@ public class ChooserActivity extends ResolverActivity implements
     private static final String PLURALS_COUNT = "count";
     private static final String PLURALS_FILE_NAME = "file_name";
 
-    @VisibleForTesting
-    public static final int LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS = 250;
-
     private boolean mIsAppPredictorComponentAvailable;
     private Map<ChooserTarget, AppTarget> mDirectShareAppTargetCache;
     private Map<ChooserTarget, ShortcutInfo> mDirectShareShortcutInfoCache;
@@ -279,6 +276,13 @@ public class ChooserActivity extends ResolverActivity implements
                     SystemUiDeviceConfigFlags.IS_NEARBY_SHARE_FIRST_TARGET_IN_RANKED_APP,
                     DEFAULT_IS_NEARBY_SHARE_FIRST_TARGET_IN_RANKED_APP);
 
+    private static final int DEFAULT_LIST_VIEW_UPDATE_DELAY_MS = 250;
+
+    @VisibleForTesting
+    int mListViewUpdateDelayMs = DeviceConfig.getInt(DeviceConfig.NAMESPACE_SYSTEMUI,
+            SystemUiDeviceConfigFlags.SHARESHEET_LIST_VIEW_UPDATE_DELAY,
+            DEFAULT_LIST_VIEW_UPDATE_DELAY_MS);
+
     private Bundle mReplacementExtras;
     private IntentSender mChosenComponentSender;
     private IntentSender mRefinementIntentSender;
@@ -2710,7 +2714,7 @@ public class ChooserActivity extends ResolverActivity implements
         Message msg = Message.obtain();
         msg.what = ChooserHandler.LIST_VIEW_UPDATE_MESSAGE;
         msg.obj = userHandle;
-        mChooserHandler.sendMessageDelayed(msg, LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        mChooserHandler.sendMessageDelayed(msg, mListViewUpdateDelayMs);
     }
 
     @Override

core/java/com/android/internal/config/sysui/SystemUiDeviceConfigFlags.java

@@ -518,6 +518,13 @@ public final class SystemUiDeviceConfigFlags {
      */
     public static final String USE_DELEGATE_CHOOSER = "use_delegate_chooser";
 
+    /**
+     * (int) The delay (in ms) before refreshing the Sharesheet UI after a change to the share
+     * target data model. For more info see go/sharesheet-list-view-update-delay.
+     */
+    public static final String SHARESHEET_LIST_VIEW_UPDATE_DELAY =
+            "sharesheet_list_view_update_delay";
+
     /**
      * (string) Name of the default QR code scanner activity. On the eligible devices this activity
      * is provided by GMS core.

core/tests/coretests/src/com/android/internal/app/ChooserActivityTest.java

@@ -622,7 +622,7 @@ public class ChooserActivityTest {
         List<ResolvedComponentInfo> stableCopy =
                 createResolvedComponentsForTestWithOtherProfile(2, /* userId= */ 10);
         waitForIdle();
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         onView(first(withText(stableCopy.get(1).getResolveInfoAt(0).activityInfo.name)))
                 .perform(click());
@@ -1436,7 +1436,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat("Chooser should have 3 targets (2 apps, 1 direct)",
                 activity.getAdapter().getCount(), is(3));
@@ -1512,7 +1512,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat("Chooser should have 3 targets (2 apps, 1 direct)",
                 activity.getAdapter().getCount(), is(3));
@@ -1594,7 +1594,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat("Chooser should have 3 targets (2 apps, 1 direct)",
                 wrapper.getAdapter().getCount(), is(3));
@@ -1666,7 +1666,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat("Chooser should have 4 targets (2 apps, 2 direct)",
                 wrapper.getAdapter().getCount(), is(4));
@@ -1753,7 +1753,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat(
                 String.format("Chooser should have %d targets (%d apps, 1 direct, 15 A-Z)",
@@ -1878,12 +1878,13 @@ public class ChooserActivityTest {
             return true;
         };
 
+        final IChooserWrapper activity = (IChooserWrapper)
                 mActivityRule.launchActivity(Intent.createChooser(sendIntent, "work tab test"));
         waitForIdle();
         onView(withTextFromRuntimeResource("resolver_work_tab")).perform(click());
         waitForIdle();
         // wait for the share sheet to expand
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         onView(first(allOf(
                 withText(workResolvedComponentInfos.get(0)
@@ -2146,7 +2147,7 @@ public class ChooserActivityTest {
         // Thread.sleep shouldn't be a thing in an integration test but it's
         // necessary here because of the way the code is structured
         // TODO: restructure the tests b/129870719
-        Thread.sleep(ChooserActivity.LIST_VIEW_UPDATE_INTERVAL_IN_MILLIS);
+        Thread.sleep(((ChooserActivity) activity).mListViewUpdateDelayMs);
 
         assertThat("Chooser should have 3 targets (2 apps, 1 direct)",
                 activity.getAdapter().getCount(), is(3));