Window Manager Flag Migration (7/n)

Introduce new APIs in Window/WindowManager.LayoutParams for developers
to decide which types of insets at which side a window should avoid:

    setFitWindowInsetsTypes(@InsetsType int types)
    setFitWindowInsetsSides(@InsetsSide int sides)
    setFitIgnoreVisibility(boolean ignore)

The existing logic in DisplayPolicy.layoutWindowLw uses combinations of
window types, window flags, and system UI flags to decide what frames a
window should have, which is very complex, difficult to maintain, and
should be replaced with the new APIs.

Bug: 118118435
Test: atest InsetsSourceProviderTest InsetsStateControllerTest
            InsetsPolicyTest WindowStateTests CommandQueueTest
            RegisterStatusBarResultTest InsetsFlagsTest
            LightBarControllerTest RegisterStatusBarResultTest
            ViewRootImplTest DisplayPolicyLayoutTests
            DisplayPolicyInsetsTests DisplayPolicyTests
            TaskSnapshotSurfaceTest
Change-Id: I06ddc9d0d2887ba4ded7bb8adbf9c9c0da4bf7b4

1 files changed, 12 insertions, 0 deletions

diff --git a/core/java/android/inputmethodservice/InputMethodService.java b/core/java/android/inputmethodservice/InputMethodService.java
index 43842c5c3403..156bcfe147f7 100644
--- a/core/java/android/inputmethodservice/InputMethodService.java
+++ b/core/java/android/inputmethodservice/InputMethodService.java
@@ -21,6 +21,7 @@ import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
 import static android.view.ViewRootImpl.NEW_INSETS_MODE_NONE;
 import static android.view.WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS;
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_ONLY_DRAW_BOTTOM_BAR_BACKGROUND;
 
 import static java.lang.annotation.RetentionPolicy.SOURCE;
 
@@ -66,6 +67,7 @@ import android.view.ViewGroup;
 import android.view.ViewRootImpl;
 import android.view.ViewTreeObserver;
 import android.view.Window;
+import android.view.WindowInsets;
 import android.view.WindowManager;
 import android.view.animation.AnimationUtils;
 import android.view.inputmethod.CompletionInfo;
@@ -1019,6 +1021,16 @@ public class InputMethodService extends AbstractInputMethodService {
                 Context.LAYOUT_INFLATER_SERVICE);
         mWindow = new SoftInputWindow(this, "InputMethod", mTheme, null, null, mDispatcherState,
                 WindowManager.LayoutParams.TYPE_INPUT_METHOD, Gravity.BOTTOM, false);
+        mWindow.getWindow().setFitWindowInsetsTypes(WindowInsets.Type.systemBars());
+        mWindow.getWindow().addPrivateFlags(PRIVATE_FLAG_ONLY_DRAW_BOTTOM_BAR_BACKGROUND);
+        mWindow.getWindow().getDecorView().setOnApplyWindowInsetsListener(
+                (v, insets) -> v.onApplyWindowInsets(
+                        new WindowInsets.Builder(insets).setSystemWindowInsets(
+                                android.graphics.Insets.of(
+                                        insets.getSystemWindowInsetLeft(),
+                                        insets.getSystemWindowInsetTop(),
+                                        insets.getSystemWindowInsetRight(),
+                                        insets.getStableInsetBottom())).build()));
         // For ColorView in DecorView to work, FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS needs to be set
         // by default (but IME developers can opt this out later if they want a new behavior).
         mWindow.getWindow().setFlags(