Move default pip position to right above the shelf.

This change takes care of the flow from WindowManagerService to
PinnedStackController, all the way to PipTouchHandler. It also
introduces a WindowManager hook that allows Launcher to pass in
shelf visibility and height. A separate change is made to send
signals from Launcher to SysUI. (ag/3724896)

Bug: 73961893
Change-Id: I2ff54e78bc2dc35c806b902464048b051a4d6394
Test: atest CtsActivityManagerDeviceTestCases:ActivityManagerPinnedStackTests

3 files changed, 24 insertions, 5 deletions

diff --git a/core/java/android/app/ActivityManagerInternal.java b/core/java/android/app/ActivityManagerInternal.java
index 2752fa9f1eb3..db9d9234aeb8 100644
--- a/core/java/android/app/ActivityManagerInternal.java
+++ b/core/java/android/app/ActivityManagerInternal.java
@@ -385,4 +385,10 @@ public abstract class ActivityManagerInternal {
      * Returns a list that contains the memory stats for currently running processes.
      */
     public abstract List<ProcessMemoryState> getMemoryStateForProcesses();
+
+    /**
+     * This enforces {@code func} can only be called if either the caller is Recents activity or
+     * has {@code permission}.
+     */
+    public abstract void enforceCallerIsRecentsOrHasPermission(String permission, String func);
 }
diff --git a/core/java/android/view/IPinnedStackListener.aidl b/core/java/android/view/IPinnedStackListener.aidl
index 9382741a81ec..2da353b1f0ee 100644
--- a/core/java/android/view/IPinnedStackListener.aidl
+++ b/core/java/android/view/IPinnedStackListener.aidl
@@ -47,17 +47,25 @@ oneway interface IPinnedStackListener {
      * the WM has changed in the mean time but the client has not received onMovementBoundsChanged).
      */
     void onMovementBoundsChanged(in Rect insetBounds, in Rect normalBounds, in Rect animatingBounds,
-            boolean fromImeAdjustement, int displayRotation);
+            boolean fromImeAdjustment, boolean fromShelfAdjustment, int displayRotation);
 
     /**
      * Called when window manager decides to adjust the pinned stack bounds because of the IME, or
      * when the listener is first registered to allow the listener to synchronized its state with
      * the controller.  This call will always be followed by a onMovementBoundsChanged() call
-     * with fromImeAdjustement set to true.
+     * with fromImeAdjustement set to {@code true}.
      */
     void onImeVisibilityChanged(boolean imeVisible, int imeHeight);
 
     /**
+     * Called when window manager decides to adjust the pinned stack bounds because of the shelf, or
+     * when the listener is first registered to allow the listener to synchronized its state with
+     * the controller.  This call will always be followed by a onMovementBoundsChanged() call
+     * with fromShelfAdjustment set to {@code true}.
+     */
+    void onShelfVisibilityChanged(boolean shelfVisible, int shelfHeight);
+
+    /**
      * Called when window manager decides to adjust the minimized state, or when the listener
      * is first registered to allow the listener to synchronized its state with the controller.
      */
diff --git a/core/java/android/view/IWindowManager.aidl b/core/java/android/view/IWindowManager.aidl
index d172fb5cd9ad..613e6d8c6b14 100644
--- a/core/java/android/view/IWindowManager.aidl
+++ b/core/java/android/view/IWindowManager.aidl
@@ -284,7 +284,12 @@ interface IWindowManager
      */
     oneway void setPipVisibility(boolean visible);
 
-   /**
+    /**
+     * Called by System UI to notify of changes to the visibility and height of the shelf.
+     */
+    void setShelfHeight(boolean visible, int shelfHeight);
+
+    /**
      * Called by System UI to enable or disable haptic feedback on the navigation bar buttons.
      */
     void setNavBarVirtualKeyHapticFeedbackEnabled(boolean enabled);
@@ -295,8 +300,8 @@ interface IWindowManager
     boolean hasNavigationBar();
 
     /**
-    * Get the position of the nav bar
-    */
+     * Get the position of the nav bar
+     */
     int getNavBarPosition();
 
     /**