electron/atom/common/api/event_emitter_caller.cc
2018-04-18 20:48:45 -04:00

38 lines
1.4 KiB
C++

// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/common/api/event_emitter_caller.h"
#include "atom/common/api/locker.h"
#include "atom/common/node_includes.h"
namespace mate {
namespace internal {
v8::Local<v8::Value> CallMethodWithArgs(v8::Isolate* isolate,
v8::Local<v8::Object> obj,
const char* method,
ValueVector* args) {
// Perform microtask checkpoint after running JavaScript.
v8::MicrotasksScope script_scope(isolate,
v8::MicrotasksScope::kRunMicrotasks);
// Use node::MakeCallback to call the callback, and it will also run pending
// tasks in Node.js.
v8::MaybeLocal<v8::Value> ret = node::MakeCallback(
isolate, obj, method, args->size(), &args->front(), {0, 0});
// If the JS function throws an exception (doesn't return a value) the result
// of MakeCallback will be empty and therefore ToLocal will be false, in this
// case we need to return "false" as that indicates that the event emitter did
// not handle the event
v8::Local<v8::Value> localRet;
if (ret.ToLocal(&localRet)) {
return localRet;
}
return v8::Boolean::New(isolate, false);
}
} // namespace internal
} // namespace mate