From 8a15834923b62ddfbbf2506b9ffc53de0ec99963 Mon Sep 17 00:00:00 2001
From: Jerry Chang <chenghsiuchang@google.com>
Date: Fri, 5 Jun 2020 16:19:38 +0800
Subject: [PATCH] Add expand notification panel API to ISystemUIProxy

Bug: 154080211
Test: make and install
Test: manual disable one handed mode and swipe down to trigger
Test: verified the gesture works even outside of home page
Change-Id: I503224685d229bf45a998afdb1db836342f48b58
---
 .../systemui/shared/recents/ISystemUiProxy.aidl  |  9 +++++++--
 .../systemui/recents/OverviewProxyService.java   | 16 ++++++++++++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/ISystemUiProxy.aidl b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/ISystemUiProxy.aidl
index b71395ddd9a47..8ed79290c8d45 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/recents/ISystemUiProxy.aidl
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/recents/ISystemUiProxy.aidl
@@ -27,7 +27,7 @@ import com.android.systemui.shared.recents.model.Task;
 
 /**
  * Temporary callbacks into SystemUI.
- * Next id = 29
+ * Next id = 30
  */
 interface ISystemUiProxy {
 
@@ -160,10 +160,15 @@ interface ISystemUiProxy {
      * Stop the one-handed mode.
      */
     void stopOneHandedMode() = 27;
- 
+
     /**
      * Handle the provided image as if it was a screenshot.
      */
     void handleImageBundleAsScreenshot(in Bundle screenImageBundle, in Rect locationInScreen,
               in Insets visibleInsets, in Task.TaskKey task) = 28;
+
+    /**
+     * Notifies to expand notification panel.
+     */
+    void expandNotificationPanel() = 29;
 }
diff --git a/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyService.java b/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyService.java
index 7d3905d074c8f..3bea6ef930ce1 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyService.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/OverviewProxyService.java
@@ -56,6 +56,7 @@ import android.os.RemoteException;
 import android.os.UserHandle;
 import android.util.Log;
 import android.view.InputMonitor;
+import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.Surface;
 import android.view.accessibility.AccessibilityManager;
@@ -131,6 +132,7 @@ public class OverviewProxyService extends CurrentUserTracker implements
     private final Intent mQuickStepIntent;
     private final ScreenshotHelper mScreenshotHelper;
     private final OneHandedUI mOneHandedUI;
+    private final CommandQueue mCommandQueue;
 
     private Region mActiveNavBarRegion;
 
@@ -483,6 +485,19 @@ public class OverviewProxyService extends CurrentUserTracker implements
                     null);
         }
 
+        @Override
+        public void expandNotificationPanel() {
+            if (!verifyCaller("expandNotificationPanel")) {
+                return;
+            }
+            long token = Binder.clearCallingIdentity();
+            try {
+                mCommandQueue.handleSystemKey(KeyEvent.KEYCODE_SYSTEM_NAVIGATION_DOWN);
+            } finally {
+                Binder.restoreCallingIdentity(token);
+            }
+        }
+
         private boolean verifyCaller(String reason) {
             final int callerId = Binder.getCallingUserHandle().getIdentifier();
             if (callerId != mCurrentBoundedUserId) {
@@ -632,6 +647,7 @@ public class OverviewProxyService extends CurrentUserTracker implements
                         .commitUpdate(mContext.getDisplayId());
             }
         });
+        mCommandQueue = commandQueue;
 
         // Listen for user setup
         startTracking();