Merge "Adjust toast window parameters to support FLAG_SHOW_WHEN_LOCKED" into qt-dev

services/core/java/com/android/server/wm/DisplayPolicy.java

@@ -822,6 +822,10 @@ public class DisplayPolicy {
                         (int) attrs.hideTimeoutMilliseconds,
                         AccessibilityManager.FLAG_CONTENT_TEXT);
                 attrs.windowAnimations = com.android.internal.R.style.Animation_Toast;
+                // Toast can show with below conditions when the screen is locked.
+                if (canToastShowWhenLocked(callingPid)) {
+                    attrs.flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
+                }
                 break;
         }
 
@@ -831,6 +835,16 @@ public class DisplayPolicy {
         }
     }
 
+    /**
+     * @return {@code true} if the calling activity initiate toast and is visible with
+     * {@link WindowManager.LayoutParams#FLAG_SHOW_WHEN_LOCKED} flag.
+     */
+    boolean canToastShowWhenLocked(int callingPid) {
+        return mDisplayContent.forAllWindows(w -> {
+            return callingPid == w.mSession.mPid && w.isVisible() && w.canShowWhenLocked();
+        }, true /* traverseTopToBottom */);
+    }
+
     /**
      * Preflight adding a window to the system.
      *

services/tests/wmtests/src/com/android/server/wm/DisplayPolicyTests.java

@@ -22,13 +22,17 @@ import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 import static android.view.WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
 import static android.view.WindowManager.LayoutParams.FLAG_DIM_BEHIND;
 import static android.view.WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS;
+import static android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
 import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR;
 import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
 import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
+import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
+import static android.view.WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
 import static android.view.WindowManager.LayoutParams.ROTATION_ANIMATION_SEAMLESS;
 import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION;
 import static android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
 import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD;
+import static android.view.WindowManager.LayoutParams.TYPE_TOAST;
 
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.doReturn;
 import static com.android.dx.mockito.inline.extended.ExtendedMockito.mock;
@@ -38,6 +42,7 @@ import static com.android.server.policy.WindowManagerPolicy.NAV_BAR_RIGHT;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.spy;
@@ -232,4 +237,40 @@ public class DisplayPolicyTests extends WindowTestsBase {
                     displayRotation, Surface.ROTATION_0, Surface.ROTATION_90));
         }
     }
+
+    @Test
+    public void testShouldShowToastWhenScreenLocked() {
+        final DisplayPolicy policy = mDisplayContent.getDisplayPolicy();
+        final WindowState activity = createApplicationWindow();
+        final WindowState toast = createToastWindow();
+
+        synchronized (mWm.mGlobalLock) {
+            policy.adjustWindowParamsLw(
+                    toast, toast.mAttrs, 0 /* callingPid */, 0 /* callingUid */);
+
+            assertTrue(policy.canToastShowWhenLocked(0 /* callingUid */));
+            assertNotEquals(0, toast.getAttrs().flags & FLAG_SHOW_WHEN_LOCKED);
+        }
+    }
+
+    private WindowState createToastWindow() {
+        final WindowState win = createWindow(null, TYPE_TOAST, "Toast");
+        final WindowManager.LayoutParams attrs = win.mAttrs;
+        attrs.width = WRAP_CONTENT;
+        attrs.height = WRAP_CONTENT;
+        attrs.flags = FLAG_KEEP_SCREEN_ON | FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCHABLE;
+        attrs.format = PixelFormat.TRANSLUCENT;
+        return win;
+    }
+
+    private WindowState createApplicationWindow() {
+        final WindowState win = createWindow(null, TYPE_APPLICATION, "Application");
+        final WindowManager.LayoutParams attrs = win.mAttrs;
+        attrs.width = MATCH_PARENT;
+        attrs.height = MATCH_PARENT;
+        attrs.flags = FLAG_SHOW_WHEN_LOCKED | FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR;
+        attrs.format = PixelFormat.OPAQUE;
+        win.mHasSurface = true;
+        return win;
+    }
 }