chore: onbatchlayout callback implementation

azimgd · May 21, 2024 · a98fbf3 · a98fbf3
1 parent df6ff01
commit a98fbf3
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Showing 4 changed files with 23 additions and 1 deletion.
diff --git a/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerEventEmitter.cpp b/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerEventEmitter.cpp
@@ -3,12 +3,20 @@
 namespace facebook::react {
 
 void ShadowListContainerEventEmitter::onVisibleChange(VisibleMetrics $event) const {
-  dispatchEvent("visibleChange", [$event=std::move($event)](jsi::Runtime &runtime) {
+  dispatchEvent("visibleChange", [$event = std::move($event)](jsi::Runtime &runtime) {
     auto $payload = jsi::Object(runtime);
     $payload.setProperty(runtime, "start", $event.start);
     $payload.setProperty(runtime, "end", $event.end);
     return $payload;
   });
 }
 
+void ShadowListContainerEventEmitter::onBatchLayout(BatchLayout $event) const {
+  dispatchEvent("batchLayout", [$event = std::move($event)](jsi::Runtime &runtime) {
+    auto $payload = jsi::Object(runtime);
+    $payload.setProperty(runtime, "size", $event.size);
+    return $payload;
+  });
+}
+
 }
diff --git a/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerEventEmitter.h b/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerEventEmitter.h
@@ -13,7 +13,12 @@ class ShadowListContainerEventEmitter : public ViewEventEmitter {
     int end;
   };
 
+  struct BatchLayout {
+    int size;
+  };
+
   void onVisibleChange(VisibleMetrics value) const;
+  void onBatchLayout(BatchLayout value) const;
 };
 
 }
diff --git a/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerShadowNode.cpp b/cpp/react/renderer/components/RNShadowListContainerSpec/ShadowListContainerShadowNode.cpp
@@ -29,6 +29,10 @@ void ShadowListContainerShadowNode::layout(LayoutContext layoutContext) {
     state.scrollContentTree = scrollContentTree_;
     setStateData(std::move(state));
   }
+
+  getConcreteEventEmitter().onBatchLayout({
+    .size = static_cast<int>(scrollContentTree_.size())
+  });
 }
 
 /*

diff --git a/src/ShadowListContainerNativeComponent.ts b/src/ShadowListContainerNativeComponent.ts
@@ -19,6 +19,11 @@ export interface NativeProps extends ViewProps {
       end: Int32;
     }>
   >;
+  onBatchLayout?: DirectEventHandler<
+    Readonly<{
+      size: Int32;
+    }>
+  >;
 }
 
 export interface NativeCommands {