91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
// Copyright (c) 2019 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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#define ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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#include <utility>
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#include <vector>
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#include "gin/converter.h"
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#include "gin/wrappable.h"
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namespace gin_helper {
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namespace internal {
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using ValueVector = std::vector<v8::Local<v8::Value>>;
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v8::Local<v8::Value> CallMethodWithArgs(v8::Isolate* isolate,
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v8::Local<v8::Object> obj,
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const char* method,
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ValueVector* args);
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} // namespace internal
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// obj.emit.apply(obj, name, args...);
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// The caller is responsible of allocating a HandleScope.
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template <typename StringType>
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v8::Local<v8::Value> EmitEvent(v8::Isolate* isolate,
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v8::Local<v8::Object> obj,
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const StringType& name,
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const internal::ValueVector& args) {
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internal::ValueVector concatenated_args = {gin::StringToV8(isolate, name)};
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concatenated_args.reserve(1 + args.size());
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concatenated_args.insert(concatenated_args.end(), args.begin(), args.end());
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return internal::CallMethodWithArgs(isolate, obj, "emit", &concatenated_args);
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}
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// obj.emit(name, args...);
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// The caller is responsible of allocating a HandleScope.
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template <typename StringType, typename... Args>
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v8::Local<v8::Value> EmitEvent(v8::Isolate* isolate,
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v8::Local<v8::Object> obj,
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const StringType& name,
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Args&&... args) {
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internal::ValueVector converted_args = {
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gin::StringToV8(isolate, name),
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gin::ConvertToV8(isolate, std::forward<Args>(args))...,
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};
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return internal::CallMethodWithArgs(isolate, obj, "emit", &converted_args);
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}
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// obj.custom_emit(args...)
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template <typename... Args>
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v8::Local<v8::Value> CustomEmit(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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const char* custom_emit,
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Args&&... args) {
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internal::ValueVector converted_args = {
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gin::ConvertToV8(isolate, std::forward<Args>(args))...,
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};
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return internal::CallMethodWithArgs(isolate, object, custom_emit,
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&converted_args);
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}
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template <typename T, typename... Args>
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v8::Local<v8::Value> CallMethod(v8::Isolate* isolate,
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gin::Wrappable<T>* object,
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const char* method_name,
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Args&&... args) {
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v8::EscapableHandleScope scope(isolate);
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v8::Local<v8::Object> v8_object;
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if (object->GetWrapper(isolate).ToLocal(&v8_object))
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return scope.Escape(CustomEmit(isolate, v8_object, method_name,
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std::forward<Args>(args)...));
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else
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return v8::Local<v8::Value>();
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}
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template <typename T, typename... Args>
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v8::Local<v8::Value> CallMethod(gin::Wrappable<T>* object,
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const char* method_name,
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Args&&... args) {
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v8::Isolate* isolate = v8::Isolate::GetCurrent();
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return CallMethod(isolate, object, method_name, std::forward<Args>(args)...);
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}
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} // namespace gin_helper
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#endif // ELECTRON_SHELL_COMMON_GIN_HELPER_EVENT_EMITTER_CALLER_H_
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