Implement method bindings for gap/row-gap/column-gap

Summary:
This adds method bindings for `YGNodeStyleSetGap` and `YGNodeStyleGetGap`.

Changelog:
[Genral][Added] - Implement method bindings for yoga gap/row-gap/column-gap

Reviewed By: yungsters

Differential Revision: D39922411

fbshipit-source-id: 6cbb4d352203d2ec92df162c3f2f2efd02bd9568

javascript/sources/Node.cc

@@ -232,6 +232,10 @@ void Node::setIsReferenceBaseline(bool isReferenceBaseline) {
   YGNodeSetIsReferenceBaseline(m_node, isReferenceBaseline);
 }
 
+void Node::setGap(int gutter, double gapLength) {
+  YGNodeStyleSetGap(m_node, static_cast<YGGutter>(gutter), gapLength);
+}
+
 int Node::getPositionType(void) const {
   return YGNodeStyleGetPositionType(m_node);
 }
@@ -327,6 +331,11 @@ Value Node::getPadding(int edge) const {
       YGNodeStyleGetPadding(m_node, static_cast<YGEdge>(edge)));
 }
 
+Value Node::getGap(int gutter, ) {
+  return Value::fromYGValue(
+      YGNodeStyleGetGap(m_node, static_cast<YGGutter>(gutter)));
+}
+
 bool Node::isReferenceBaseline() {
   return YGNodeIsReferenceBaseline(m_node);
 }

javascript/sources/Node.hh

@@ -95,6 +95,8 @@ public: // Style setters
   void setPadding(int edge, double padding);
   void setPaddingPercent(int edge, double padding);
 
+  void setGap(int gutter, double gapLength);
+
 public: // Style getters
   int getPositionType(void) const;
   Value getPosition(int edge) const;
@@ -130,6 +132,8 @@ public: // Style getters
 
   Value getPadding(int edge) const;
 
+  Value getGap(int gutter);
+
 public: // Tree hierarchy mutators
   void insertChild(Node* child, unsigned index);
   void removeChild(Node* child);

javascript/sources/entry-browser.js

@@ -43,6 +43,7 @@ export type {
   Yoga$FlexDirection,
   Yoga$Direction,
   Yoga$Wrap,
+  Yoga$Gutter,
   Yoga$Edge,
   Yoga$Display,
   Yoga$Unit,

javascript/sources/entry-common.js

@@ -15,6 +15,7 @@ import type {
   Yoga$Wrap,
   Yoga$Align,
   Yoga$FlexDirection,
+  Yoga$Gap,
   Yoga$Direction,
   Yoga$PositionType,
   Yoga$Overflow,
@@ -155,6 +156,7 @@ export type Yoga$Node = {
   getFlexWrap(): Yoga$Wrap,
   getHeight(): Value,
   getJustifyContent(): Yoga$Justify,
+  getGap(gutter: Yoga$Gutter): Value,
   getMargin(edge: Yoga$Edge): Value,
   getMaxHeight(): Value,
   getMaxWidth(): Value,
@@ -189,6 +191,7 @@ export type Yoga$Node = {
   setHeightAuto(): void,
   setHeightPercent(height: number): void,
   setJustifyContent(justifyContent: Yoga$Justify): void,
+  setGap(gutter: Yoga$Gutter, gapLength: number): Value,
   setMargin(edge: Yoga$Edge, margin: number): void,
   setMarginAuto(edge: Yoga$Edge): void,
   setMarginPercent(edge: Yoga$Edge, margin: number): void,

javascript/sources/entry-node.js

@@ -18,6 +18,7 @@ export type {
   Yoga$FlexDirection,
   Yoga$Direction,
   Yoga$Wrap,
+  Yoga$Gutter,
   Yoga$Edge,
   Yoga$Display,
   Yoga$Unit,

javascript/sources/nbind.cc

@@ -98,6 +98,8 @@ NBIND_CLASS(Node) {
   method(setPadding);
   method(setPaddingPercent);
 
+  method(setGap);
+
   method(getPositionType);
   method(getPosition);
 
@@ -132,6 +134,8 @@ NBIND_CLASS(Node) {
 
   method(getPadding);
 
+  method(getGap);
+
   method(insertChild);
   method(removeChild);