RESTRICT AUTOMERGE
Block TYPE_PRESENTATION windows on default display
... and any other display that isn't considered a public presentation
display, as per Display.isPublicPresentation()
Bug: 141745510
Test: cts-tradefed run cts -m CtsWindowManagerDeviceTestCases -t android.server.wm.PresentationTest
Change-Id: I2aaab1903dee54190338f7b6e49888aa51437108
diff --git a/core/java/android/app/Presentation.java b/core/java/android/app/Presentation.java
index cb72d4d..b3a39f5 100644
--- a/core/java/android/app/Presentation.java
+++ b/core/java/android/app/Presentation.java
@@ -26,18 +26,18 @@
import android.hardware.display.DisplayManager;
import android.hardware.display.DisplayManager.DisplayListener;
import android.os.Binder;
+import android.os.Handler;
import android.os.IBinder;
+import android.os.Message;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.util.TypedValue;
import android.view.ContextThemeWrapper;
import android.view.Display;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.view.WindowManagerImpl;
-import android.os.Handler;
-import android.os.Message;
-import android.util.DisplayMetrics;
-import android.util.Log;
-import android.util.TypedValue;
/**
* Base class for presentations.
@@ -116,7 +116,9 @@
* The display manager keeps track of all displays in the system. However, not all
* displays are appropriate for showing presentations. For example, if an activity
* attempted to show a presentation on the main display it might obscure its own content
- * (it's like opening a dialog on top of your activity).
+ * (it's like opening a dialog on top of your activity). Creating a presentation on the main
+ * display will result in {@link android.view.WindowManager.InvalidDisplayException} being thrown
+ * when invoking {@link #show()}.
* </p><p>
* Here's how to identify suitable displays for showing presentations using
* {@link DisplayManager#getDisplays(String)} and the
@@ -243,7 +245,7 @@
/**
* Inherited from {@link Dialog#show}. Will throw
* {@link android.view.WindowManager.InvalidDisplayException} if the specified secondary
- * {@link Display} can't be found.
+ * {@link Display} can't be found or if it does not have {@link Display#FLAG_PRESENTATION} set.
*/
@Override
public void show() {
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 436a5c7..2de8ae1 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -60,6 +60,7 @@
import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD;
import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD_DIALOG;
import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR;
+import static android.view.WindowManager.LayoutParams.TYPE_PRESENTATION;
import static android.view.WindowManager.LayoutParams.TYPE_PRIVATE_PRESENTATION;
import static android.view.WindowManager.LayoutParams.TYPE_QS_DIALOG;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR;
@@ -1276,6 +1277,13 @@
return WindowManagerGlobal.ADD_PERMISSION_DENIED;
}
+ if (type == TYPE_PRESENTATION && !displayContent.getDisplay().isPublicPresentation()) {
+ Slog.w(TAG_WM,
+ "Attempted to add presentation window to a non-suitable display. "
+ + "Aborting.");
+ return WindowManagerGlobal.ADD_INVALID_DISPLAY;
+ }
+
AppWindowToken atoken = null;
final boolean hasParent = parentWindow != null;
// Use existing parent window token for child windows since they go in the same token
