Added Selection prop to TextInputProps

Summary:
Changelog: [iOS][Added]
1. Added new primitive type "Selection" to C++
2. Added property "selection" to TextInputProps
3. Added parser for that

Reviewed By: sammy-SC

Differential Revision: D30043256

fbshipit-source-id: eefa67ca23759761901cba1d2ab3052877a153a7

Author: Dmitry Rykun

React/Fabric/Mounting/ComponentViews/TextInput/RCTTextInputComponentView.mm

@@ -208,7 +208,6 @@ - (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &
   if (newTextInputProps.inputAccessoryViewID != oldTextInputProps.inputAccessoryViewID) {
     _backedTextInputView.inputAccessoryViewID = RCTNSStringFromString(newTextInputProps.inputAccessoryViewID);
   }
-
   [super updateProps:props oldProps:oldProps];
 
   [self setDefaultInputAccessoryView];

ReactCommon/react/renderer/components/textinput/iostextinput/TextInputProps.cpp

@@ -82,6 +82,12 @@ TextInputProps::TextInputProps(
           "autoFocus",
           sourceProps.autoFocus,
           {})),
+      selection(convertRawProp(
+          context,
+          rawProps,
+          "selection",
+          sourceProps.selection,
+          better::optional<Selection>())),
       inputAccessoryViewID(convertRawProp(
           context,
           rawProps,
@@ -115,13 +121,5 @@ ParagraphAttributes TextInputProps::getEffectiveParagraphAttributes() const {
   return result;
 }
 
-#ifdef ANDROID
-folly::dynamic TextInputProps::getDynamic() const {
-  folly::dynamic props = folly::dynamic::object();
-  props["value"] = value;
-  return props;
-}
-#endif
-
 } // namespace react
 } // namespace facebook

ReactCommon/react/renderer/components/textinput/iostextinput/TextInputProps.h

@@ -58,6 +58,7 @@ class TextInputProps final : public ViewProps, public BaseTextProps {
   int const mostRecentEventCount{0};
 
   bool autoFocus{false};
+  better::optional<Selection> selection{};
 
   std::string const inputAccessoryViewID{};
 
@@ -66,10 +67,6 @@ class TextInputProps final : public ViewProps, public BaseTextProps {
    */
   TextAttributes getEffectiveTextAttributes(Float fontSizeMultiplier) const;
   ParagraphAttributes getEffectiveParagraphAttributes() const;
-
-#ifdef ANDROID
-  folly::dynamic getDynamic() const;
-#endif
 };
 
 } // namespace react

ReactCommon/react/renderer/components/textinput/iostextinput/primitives.h

@@ -77,6 +77,12 @@ enum class KeyboardType {
   VisiblePassword,
 };
 
+class Selection final {
+ public:
+  int start{0};
+  int end{0};
+};
+
 /*
  * Controls features of text inputs.
  */

ReactCommon/react/renderer/components/textinput/iostextinput/propsConversions.h

@@ -145,5 +145,38 @@ static TextInputTraits convertRawProp(
   return traits;
 }
 
+inline void fromRawValue(
+    const PropsParserContext &context,
+    const RawValue &value,
+    Selection &result) {
+  if (value.hasType<better::map<std::string, int>>()) {
+    auto map = (better::map<std::string, int>)value;
+    for (const auto &pair : map) {
+      if (pair.first == "start") {
+        result.start = pair.second;
+      } else if (pair.first == "end") {
+        result.end = pair.second;
+      } else {
+        LOG(ERROR) << "Unsupported Selection map key: " << pair.first;
+        react_native_assert(false);
+      }
+    }
+    return;
+  }
+
+  react_native_assert(value.hasType<std::vector<int>>());
+  if (value.hasType<std::vector<int>>()) {
+    auto array = (std::vector<int>)value;
+    react_native_assert(array.size() == 2);
+    if (array.size() >= 2) {
+      result = {array.at(0), array.at(1)};
+    } else {
+      result = {0, 0};
+      LOG(ERROR) << "Unsupported Selection vector size: " << array.size();
+    }
+  } else {
+    LOG(ERROR) << "Unsupported Selection type";
+  }
+}
 } // namespace react
 } // namespace facebook