AndroidTextInput: support proper measuring of AndroidTextInput text, and displaying attributed strings

Summary:
Use a similar setup as Paragraph, and support in Fabric:

- Correct measuring of AndroidTextInput
- Correct display of AndroidTextInput attributed strings

Changelog: [Internal]

Reviewed By: mdvacca

Differential Revision: D18669957

fbshipit-source-id: 84e0ad8021c9edf8219e0c673c781276ca29787d

ReactCommon/fabric/components/textinput/androidtextinput/AndroidTextInputState.cpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "AndroidTextInputState.h"
+
+#include <react/components/text/conversions.h>
+#include <react/debug/debugStringConvertibleUtils.h>
+
+namespace facebook {
+namespace react {
+
+#ifdef ANDROID
+folly::dynamic AndroidTextInputState::getDynamic() const {
+  folly::dynamic newState = folly::dynamic::object();
+  newState["attributedString"] = toDynamic(attributedString);
+  newState["paragraphAttributes"] = toDynamic(paragraphAttributes);
+  newState["hash"] = newState["attributedString"]["hash"];
+  return newState;
+}
+#endif
+
+} // namespace react
+} // namespace facebook