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Commit ca4c5743 authored by Yuki Awano's avatar Yuki Awano
Browse files

Add getAccessibilityWindowId system process API 

- Add an API to get accessibility window id from window token. This API
  can be called only from a system process.

Bug: 119794051
Test: None
Change-Id: I37db50209efeb81f3e3502d84fd53fedec695f99
parent 441ca70d

api/system-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -7310,6 +7310,7 @@ package android.view { 
package android.view.accessibility {



  public final class AccessibilityManager {

    method public int getAccessibilityWindowId(android.os.IBinder);

    method public void performAccessibilityShortcut();

  }

core/java/android/view/accessibility/AccessibilityManager.java

+30 −0
Original line number Diff line number Diff line
@@ -1003,6 +1003,36 @@ public final class AccessibilityManager { 
        }

    }



    /**

     * 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.

     *

core/java/android/view/accessibility/IAccessibilityManager.aidl

+3 −0
Original line number Diff line number Diff line
@@ -76,5 +76,8 @@ interface IAccessibilityManager { 
    // System process only

    boolean sendFingerprintGesture(int gestureKeyCode);



    // System process only

    int getAccessibilityWindowId(IBinder windowToken);



    long getRecommendedTimeoutMillis();

}

services/accessibility/java/com/android/server/accessibility/AccessibilityManagerService.java

+19 −0
Original line number Diff line number Diff line
@@ -2465,6 +2465,25 @@ public class AccessibilityManagerService extends IAccessibilityManager.Stub 
        return mFingerprintGestureDispatcher.onFingerprintGesture(gestureKeyCode);

    }



    /**

     * 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.

     *