Merge "Add getAccessibilityWindowId system process API"
diff --git a/api/system-current.txt b/api/system-current.txt
index 56cda7b..09dca1e 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -7240,6 +7240,7 @@
 package android.view.accessibility {
 
   public final class AccessibilityManager {
+    method public int getAccessibilityWindowId(android.os.IBinder);
     method public void performAccessibilityShortcut();
   }
 
diff --git a/core/java/android/view/accessibility/AccessibilityManager.java b/core/java/android/view/accessibility/AccessibilityManager.java
index 88b9c80..c5c1bca 100644
--- a/core/java/android/view/accessibility/AccessibilityManager.java
+++ b/core/java/android/view/accessibility/AccessibilityManager.java
@@ -1004,6 +1004,36 @@
     }
 
     /**
+     * Returns accessibility window id from window token. Accessibility window id is the one
+     * returned from AccessibilityWindowInfo.getId(). Only available for the system process.
+     *
+     * @param windowToken Window token to find accessibility window id.
+     * @return Accessibility window id for the window token.
+     *   AccessibilityWindowInfo.UNDEFINED_WINDOW_ID if accessibility window id not available for
+     *   the token.
+     * @hide
+     */
+    @SystemApi
+    public int getAccessibilityWindowId(IBinder windowToken) {
+        if (windowToken == null) {
+            return AccessibilityWindowInfo.UNDEFINED_WINDOW_ID;
+        }
+
+        final IAccessibilityManager service;
+        synchronized (mLock) {
+            service = getServiceLocked();
+            if (service == null) {
+                return AccessibilityWindowInfo.UNDEFINED_WINDOW_ID;
+            }
+        }
+        try {
+            return service.getAccessibilityWindowId(windowToken);
+        } catch (RemoteException e) {
+            return AccessibilityWindowInfo.UNDEFINED_WINDOW_ID;
+        }
+    }
+
+    /**
      * Sets the current state and notifies listeners, if necessary.
      *
      * @param stateFlags The state flags.
diff --git a/core/java/android/view/accessibility/IAccessibilityManager.aidl b/core/java/android/view/accessibility/IAccessibilityManager.aidl
index 2767a82..38dac94 100644
--- a/core/java/android/view/accessibility/IAccessibilityManager.aidl
+++ b/core/java/android/view/accessibility/IAccessibilityManager.aidl
@@ -76,5 +76,8 @@
     // System process only
     boolean sendFingerprintGesture(int gestureKeyCode);
 
+    // System process only
+    int getAccessibilityWindowId(IBinder windowToken);
+
     long getRecommendedTimeoutMillis();
 }
diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
index d5decce..36ca52a 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java
@@ -2466,6 +2466,25 @@
     }
 
     /**
+     * AIDL-exposed method. System only.
+     * Gets accessibility window id from window token.
+     *
+     * @param windowToken Window token to get accessibility window id.
+     * @return Accessibility window id for the window token. Returns -1 if no such token is
+     *   registered.
+     */
+    @Override
+    public int getAccessibilityWindowId(IBinder windowToken) {
+        synchronized (mLock) {
+            if (UserHandle.getAppId(Binder.getCallingUid()) != Process.SYSTEM_UID) {
+                throw new SecurityException("Only SYSTEM can call getAccessibilityWindowId");
+            }
+
+            return findWindowIdLocked(windowToken);
+        }
+    }
+
+    /**
      * Get the recommended timeout of interactive controls and non-interactive controls.
      *
      * @return A long for pair of {@code int}s. First integer for interactive one, and second