Freezing all apps updates during certain tests

This CL adds a very low risk because most (but not all) changes affect
only Launcher behavior during the test.

This should fix a lab-only flake when all apps keeps changing while
the test is working with it.

Example: test figures out which icon to click, by the moment it clicks
there, there is another icon there, or the icon is under the search box,
and clicking opens IME.

Switching test devices to airplane mode didn't help. The earlier change
that prevents popup menu cancellation is not general enough.

Now the tests are given an API to explicitly freeze and unfreeze
all-apps, which should be a final solution.

Bug: 132900132
Bug: 133765434
Change-Id: I8b81cc9be004482beb6cdcdd05406e2d9b4c7629

src/com/android/launcher3/allapps/AllAppsStore.java

@@ -29,7 +29,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
-import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
 
@@ -38,12 +37,19 @@ import java.util.function.Predicate;
  */
 public class AllAppsStore {
 
+    // Defer updates flag used to defer all apps updates to the next draw.
+    public static final int DEFER_UPDATES_NEXT_DRAW = 1 << 0;
+    // Defer updates flag used to defer all apps updates while the user interacts with all apps.
+    public static final int DEFER_UPDATES_USER_INTERACTION = 1 << 1;
+    // Defer updates flag used to defer all apps updates by a test's request.
+    public static final int DEFER_UPDATES_TEST = 1 << 2;
+
     private PackageUserKey mTempKey = new PackageUserKey(null, null);
     private final HashMap<ComponentKey, AppInfo> mComponentToAppMap = new HashMap<>();
     private final List<OnUpdateListener> mUpdateListeners = new ArrayList<>();
     private final ArrayList<ViewGroup> mIconContainers = new ArrayList<>();
 
-    private boolean mDeferUpdates = false;
+    private int mDeferUpdatesFlags = 0;
     private boolean mUpdatePending = false;
 
     public Collection<AppInfo> getApps() {
@@ -62,17 +68,22 @@ public class AllAppsStore {
         return mComponentToAppMap.get(key);
     }
 
-    public void setDeferUpdates(boolean deferUpdates) {
-        if (mDeferUpdates != deferUpdates) {
-            mDeferUpdates = deferUpdates;
+    public void enableDeferUpdates(int flag) {
+        mDeferUpdatesFlags |= flag;
+    }
 
-            if (!mDeferUpdates && mUpdatePending) {
-                notifyUpdate();
-                mUpdatePending = false;
-            }
+    public void disableDeferUpdates(int flag) {
+        mDeferUpdatesFlags &= ~flag;
+        if (mDeferUpdatesFlags == 0 && mUpdatePending) {
+            notifyUpdate();
+            mUpdatePending = false;
         }
     }
 
+    public int getDeferUpdatesFlags() {
+        return mDeferUpdatesFlags;
+    }
+
     /**
      * Adds or updates existing apps in the list
      */
@@ -95,7 +106,7 @@ public class AllAppsStore {
 
 
     private void notifyUpdate() {
-        if (mDeferUpdates) {
+        if (mDeferUpdatesFlags != 0) {
             mUpdatePending = true;
             return;
         }