Merge "Make drag window a trusted overlay"

            mDragWindowHandle.ownerUid = MY_UID;

            mDragWindowHandle.scaleFactor = 1.0f;

            // Keep the default behavior of this window to be focusable, which allows the system

            // to consume keys when dragging is active. This can also be used to modify the drag

            // state on key press. For example, cancel drag on escape key.

            mDragWindowHandle.inputConfig = InputConfig.PREVENT_SPLITTING;

            // InputConfig.PREVENT_SPLITTING: To keep the default behavior of this window to be

            // focusable, which allows the system to consume keys when dragging is active. This can

            // also be used to modify the drag state on key press. For example, cancel drag on

            // escape key.

            // InputConfig.TRUSTED_OVERLAY: To not block any touches while D&D ongoing and allowing

            // touches to pass through to windows underneath. This allows user to interact with the

            // UI to navigate while dragging.

            mDragWindowHandle.inputConfig =

                    InputConfig.PREVENT_SPLITTING | InputConfig.TRUSTED_OVERLAY;

            // The drag window cannot receive new touches.

            mDragWindowHandle.touchableRegion.setEmpty();