[Overview Actions] onBackPressed for the modal state will go to overview.

Test: local
Bug: 157778187
Change-Id: Ie5252d39e54ca11de389dd698bfb7751fdf8f60e
diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
index d5b0687..fc0dcd5 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
@@ -20,6 +20,7 @@
 
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 import com.android.quickstep.views.RecentsView;
 
@@ -56,6 +57,17 @@
         return 1.0f;
     }
 
+    @Override
+    public void onBackPressed(Launcher launcher) {
+        launcher.getStateManager().goToState(LauncherState.OVERVIEW);
+        RecentsView recentsView = launcher.<RecentsView>getOverviewPanel();
+        if (recentsView != null) {
+            recentsView.resetModalVisuals();
+        } else {
+            super.onBackPressed(launcher);
+        }
+    }
+
     public static float[] getOverviewScaleAndOffsetForModalState(BaseDraggingActivity activity) {
         Rect out = new Rect();
         activity.<RecentsView>getOverviewPanel().getTaskSize(out);
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskOverlayFactory.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskOverlayFactory.java
index a6a08cb..177f9a0 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskOverlayFactory.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskOverlayFactory.java
@@ -179,6 +179,12 @@
         }
 
         /**
+         * Called when the system wants to reset the modal visuals.
+         */
+        public void resetModalVisuals() {
+        }
+
+        /**
          * Gets the modal state system shortcut.
          */
         public SystemShortcut getModalStateSystemShortcut(WorkspaceItemInfo itemInfo) {
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
index 534ef7b..22d306e 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
@@ -1759,6 +1759,16 @@
         return Math.max(getWidth(), 1);
     }
 
+    /**
+     * Resets the visuals when exit modal state.
+     */
+    public void resetModalVisuals() {
+        TaskView taskView = getCurrentPageTaskView();
+        if (taskView != null) {
+            taskView.getThumbnail().getTaskOverlay().resetModalVisuals();
+        }
+    }
+
     private void updateDeadZoneRects() {
         // Get the deadzone rect surrounding the clear all button to not dismiss overview to home
         mClearAllButtonDeadZoneRect.setEmpty();