Merge "Prepare to replace windows across recreate()." into nyc-dev (ea162c3c) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityThread.java

+9 −4

Original line number	Diff line number	Diff line
		@@ -4168,7 +4168,7 @@ public final class ActivityThread {
		}
		IBinder wtoken = v.getWindowToken();
		if (r.activity.mWindowAdded) {
		if (r.onlyLocalRequest \|\| r.mPreserveWindow) {
		if (r.mPreserveWindow) {
		// Hold off on removing this until the new activity's
		// window is being added.
		r.mPendingRemoveWindow = r.window;
		@@ -4403,15 +4403,20 @@ public final class ActivityThread {
		// be replaced and defer requests to destroy or hide them. This way we can achieve
		// visual continuity. It's important that we do this here prior to pause and destroy
		// as that is when we may hide or remove the child views.
		//
		// There is another scenario, if we have decided locally to relaunch the app from a
		// call to recreate, then none of the windows will be prepared for replacement or
		// preserved by the server, so we want to notify it that we are preparing to replace
		// everything
		try {
		if (r.mPreserveWindow) {
		WindowManagerGlobal.getWindowSession().prepareToReplaceChildren(r.token);
		if (r.mPreserveWindow \|\| r.onlyLocalRequest) {
		WindowManagerGlobal.getWindowSession().prepareToReplaceWindows(
		r.token, !r.onlyLocalRequest);
		}
		} catch (RemoteException e) {
		throw e.rethrowFromSystemServer();
		}


		// Need to ensure state is saved.
		if (!r.paused) {
		performPauseActivity(r.token, false, r.isPreHoneycomb(), "handleRelaunchActivity");

+4 −2

Original line number	Diff line number	Diff line
		@@ -125,11 +125,13 @@ interface IWindowSession {

		/*
		* Notify the window manager that an application is relaunching and
		* child windows should be prepared for replacement.
		* windows should be prepared for replacement.
		*
		* @param appToken The application
		* @param childrenOnly Whether to only prepare child windows for replacement
		* (for example when main windows are being reused via preservation).
		*/
		void prepareToReplaceChildren(IBinder appToken);
		void prepareToReplaceWindows(IBinder appToken, boolean childrenOnly);

		/**
		* If a call to relayout() asked to have the surface destroy deferred,

+2 −2

Original line number	Diff line number	Diff line
		@@ -201,8 +201,8 @@ final class Session extends IWindowSession.Stub
		}

		@Override
		public void prepareToReplaceChildren(IBinder appToken) {
		mService.setReplacingChildren(appToken);
		public void prepareToReplaceWindows(IBinder appToken, boolean childrenOnly) {
		mService.setReplacingWindows(appToken, childrenOnly);
		}

		public int relayout(IWindow window, int seq, WindowManager.LayoutParams attrs,

+13 −4

Original line number	Diff line number	Diff line
		@@ -10700,12 +10700,16 @@ public class WindowManagerService extends IWindowManager.Stub
		}

		/**
		* Hint to a token that its children will be replaced across activity relaunch.
		* The children would otherwise be removed shortly following this as the
		* Hint to a token that its windows will be replaced across activity relaunch.
		* The windows would otherwise be removed shortly following this as the
		* activity is torn down.
		* @param token Application token for which the activity will be relaunched.
		* @param childrenOnly Whether to mark only child windows for replacement
		* (for the case where main windows are being preserved/
		* reused rather than replaced).
		*
		*/
		public void setReplacingChildren(IBinder token) {
		public void setReplacingWindows(IBinder token, boolean childrenOnly) {
		AppWindowToken appWindowToken = null;
		synchronized (mWindowMap) {
		appWindowToken = findAppWindowToken(token);
		@@ -10715,7 +10719,12 @@ public class WindowManagerService extends IWindowManager.Stub
		return;
		}

		if (childrenOnly) {
		appWindowToken.setReplacingChildren();
		} else {
		appWindowToken.setReplacingWindows(false /* animate */);
		}

		scheduleClearReplacingWindowIfNeeded(token, true /* replacing */);
		}
		}

+1 −1

Original line number	Diff line number	Diff line
		@@ -233,7 +233,7 @@ public final class BridgeWindowSession implements IWindowSession {
		}

		@Override
		public void prepareToReplaceChildren(IBinder appToken) {
		public void prepareToReplaceWindows(IBinder appToken, boolean childrenOnly) {
		// pass for now.
		}