third_party/blink/renderer/bindings/core/v8/v8_lazy_event_listener.h

/*
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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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#ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_LAZY_EVENT_LISTENER_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_LAZY_EVENT_LISTENER_H_

#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_abstract_event_handler.h"
#include "third_party/blink/renderer/platform/wtf/text/text_position.h"
#include "v8/include/v8.h"

namespace blink {

class Event;
class Node;

// V8LazyEventListener is a wrapper for a JavaScript code string that is
// compiled and evaluated when an event is fired.  A V8LazyEventListener is
// either a HTML or SVG event handler.
class V8LazyEventListener final : public V8AbstractEventHandler {
 public:
  static V8LazyEventListener* Create(const AtomicString& function_name,
                                     const String& code,
                                     const String& source_url,
                                     const TextPosition& position,
                                     Node* node,
                                     v8::Isolate* isolate,
                                     DOMWrapperWorld& world) {
    return new V8LazyEventListener(isolate, world, function_name, code,
                                   source_url, position, node);
  }

  void Trace(blink::Visitor* visitor) override {
    visitor->Trace(node_);
    V8AbstractEventHandler::Trace(visitor);
  }

  const String& Code() const override { return code_; }

 protected:
  v8::Local<v8::Object> GetListenerObjectInternal(ExecutionContext*) override;

 private:
  V8LazyEventListener(v8::Isolate*,
                      DOMWrapperWorld&,
                      const AtomicString& function_name,
                      const String& code,
                      const String source_url,
                      const TextPosition&,
                      Node*);

  v8::Local<v8::Value> CallListenerFunction(ScriptState*,
                                            v8::Local<v8::Value>,
                                            Event*) override;

  // Return true, so that event handlers from markup are not cloned twice when
  // building the shadow tree for SVGUseElements.
  bool IsEventHandlerForContentAttribute() const override { return true; }

  void CompileScript(ScriptState*, ExecutionContext*);

  void FireErrorEvent(v8::Local<v8::Context>,
                      ExecutionContext*,
                      v8::Local<v8::Message>);

  bool was_compilation_failed_;
  AtomicString function_name_;
  String code_;
  String source_url_;
  Member<Node> node_;
  TextPosition position_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_V8_LAZY_EVENT_LISTENER_H_