Animate IME with zero insets

When IME has zero insets, it doesn't map to any side and doesn't have
can't be animated.
IME can have zero insets in following cases:
1. Floating IME
2. Fullscreen IME (in landscape)
3. IME doesn't overlap with IME target window.

In order to animate a type, it must have insets. We can animate IME
from negative insets to zero and vice-versa. This makes zero insets IME a
special case of ISIDE_BOTTOM.
Deprecate SIDE_FLOATING because it shouldn't logically map to a side.

Fix: 153909316
Test: atest WindowInsetsAnimationImeTests#testZeroInsetsImeAnimates
Change-Id: I6d1d3430888db4632cb2f93e9042f692b35ebaeb

1 files changed, 7 insertions, 0 deletions

diff --git a/core/java/android/view/WindowInsetsAnimationController.java b/core/java/android/view/WindowInsetsAnimationController.java
index fb9d05e2d730..792b974558bb 100644
--- a/core/java/android/view/WindowInsetsAnimationController.java
+++ b/core/java/android/view/WindowInsetsAnimationController.java
@@ -181,4 +181,11 @@ public interface WindowInsetsAnimationController {
      * @return {@code true} if the instance is cancelled, {@code false} otherwise.
      */
     boolean isCancelled();
+
+    /**
+     * @hide
+     * @return {@code true} when controller controls IME and IME has no insets (floating,
+     *  fullscreen or non-overlapping).
+     */
+    boolean hasZeroInsetsIme();
 }