93 lines
2.9 KiB
C
93 lines
2.9 KiB
C
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// Copyright (c) 2023 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#ifndef CEF_LIBCEF_DLL_WRAPPER_CEF_MESSAGE_ROUTER_UTILS_H_
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#define CEF_LIBCEF_DLL_WRAPPER_CEF_MESSAGE_ROUTER_UTILS_H_
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#pragma once
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#include <variant>
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#include "include/wrapper/cef_message_router.h"
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namespace cef_message_router_utils {
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///
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/// This class handles the task of copying user data, such as CefString or
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/// binary values like (void*, size_t), directly to an appropriate buffer based
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/// on the user data type and size.
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///
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/// There are four specializations of this abstract class. The appropriate
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/// specialization is chosen by the `CreateBrowserResponseBuilder` function,
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/// based on the provided data type and size. For instance, for a "short"
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/// CefString, a StringResponseBuilder specialization is used, and for an empty
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/// binary value - EmptyResponseBuilder.
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///
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class BrowserResponseBuilder : public CefBaseRefCounted {
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public:
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///
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/// Creates a new CefProcessMessage from the data provided to the builder.
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/// Returns nullptr for invalid instances. Invalidates this builder instance.
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///
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virtual CefRefPtr<CefProcessMessage> Build(int context_id,
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int request_id) = 0;
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};
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struct BrowserMessage {
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int context_id;
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int request_id;
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bool is_success;
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int error_code;
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std::variant<CefString, CefRefPtr<CefBinaryBuffer>> payload;
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};
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struct RendererMessage {
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int context_id;
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int request_id;
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bool is_persistent;
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std::variant<CefString, CefRefPtr<const CefBinaryBuffer>> payload;
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};
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class BinaryValueABRCallback final : public CefV8ArrayBufferReleaseCallback {
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public:
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explicit BinaryValueABRCallback(CefRefPtr<CefBinaryBuffer> value)
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: value_(std::move(value)) {}
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BinaryValueABRCallback(const BinaryValueABRCallback&) = delete;
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BinaryValueABRCallback& operator=(const BinaryValueABRCallback&) = delete;
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void ReleaseBuffer(void* buffer) override {}
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private:
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const CefRefPtr<CefBinaryBuffer> value_;
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IMPLEMENT_REFCOUNTING(BinaryValueABRCallback);
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};
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CefRefPtr<BrowserResponseBuilder> CreateBrowserResponseBuilder(
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size_t threshold,
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const std::string& name,
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const CefString& response);
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CefRefPtr<BrowserResponseBuilder> CreateBrowserResponseBuilder(
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size_t threshold,
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const std::string& name,
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const void* data,
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size_t size);
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CefRefPtr<CefProcessMessage> BuildRendererMsg(
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size_t threshold,
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const std::string& name,
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int context_id,
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int request_id,
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const CefRefPtr<CefV8Value>& request,
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bool persistent);
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BrowserMessage ParseBrowserMessage(const CefRefPtr<CefProcessMessage>& message);
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RendererMessage ParseRendererMessage(
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const CefRefPtr<CefProcessMessage>& message);
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} // namespace cef_message_router_utils
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#endif // CEF_LIBCEF_DLL_WRAPPER_CEF_MESSAGE_ROUTER_UTILS_H_
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