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ddeb970f18
* refactor: make ReplyChannel inherit from gin::Wrappable * chore: add kElectronReplyChannel to chore_add_electron_objects_to_wrappablepointertag.patch * fix: use gin::PerIsolateData::DisposeObserver * fix: lifetime issues * chore: rm perisolatedata hook in favor of prefinalizer --------- Co-authored-by: deepak1556 <hop2deep@gmail.com>
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
// Copyright (c) 2023 Salesforce, 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_REPLY_CHANNEL_H_
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#define ELECTRON_SHELL_COMMON_GIN_HELPER_REPLY_CHANNEL_H_
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#include <string_view>
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#include "gin/wrappable.h"
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#include "shell/common/api/api.mojom.h"
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#include "v8/include/cppgc/prefinalizer.h"
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namespace gin_helper {
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template <typename T>
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class Handle;
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} // namespace gin_helper
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namespace v8 {
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class Isolate;
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template <typename T>
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class Local;
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class Object;
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class ObjectTemplate;
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} // namespace v8
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namespace gin_helper::internal {
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// This object wraps the InvokeCallback so that if it gets GC'd by V8, we can
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// still call the callback and send an error. Not doing so causes a Mojo DCHECK,
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// since Mojo requires callbacks to be called before they are destroyed.
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class ReplyChannel : public gin::Wrappable<ReplyChannel> {
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CPPGC_USING_PRE_FINALIZER(ReplyChannel, EnsureReplySent);
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public:
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using InvokeCallback = electron::mojom::ElectronApiIPC::InvokeCallback;
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static ReplyChannel* Create(v8::Isolate* isolate, InvokeCallback callback);
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// Constructor is public only to satisfy cppgc::MakeGarbageCollected.
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// Callers should use Create() instead.
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explicit ReplyChannel(v8::Isolate* isolate, InvokeCallback callback);
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~ReplyChannel() override;
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// disable copy
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ReplyChannel(const ReplyChannel&) = delete;
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ReplyChannel& operator=(const ReplyChannel&) = delete;
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// gin_helper::Wrappable
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static const gin::WrapperInfo kWrapperInfo;
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const gin::WrapperInfo* wrapper_info() const override;
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const char* GetHumanReadableName() const override;
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gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
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v8::Isolate* isolate) override;
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// Invokes `callback` (if it's non-null) with `errmsg` as an arg.
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static void SendError(v8::Isolate* isolate,
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InvokeCallback callback,
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std::string_view errmsg);
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void EnsureReplySent();
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private:
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static bool SendReplyImpl(v8::Isolate* isolate,
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InvokeCallback callback,
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v8::Local<v8::Value> arg);
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bool SendReply(v8::Isolate* isolate, v8::Local<v8::Value> arg);
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InvokeCallback callback_;
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};
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} // namespace gin_helper::internal
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#endif // ELECTRON_SHELL_COMMON_GIN_HELPER_REPLY_CHANNEL_H_
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