144 lines
3.9 KiB
C++
144 lines
3.9 KiB
C++
// Copyright (c) 2020 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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#include "libcef/browser/devtools/devtools_controller.h"
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#include "libcef/browser/devtools/devtools_util.h"
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#include "libcef/browser/thread_util.h"
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#include "base/json/json_reader.h"
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#include "base/json/json_writer.h"
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#include "content/public/browser/devtools_agent_host.h"
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CefDevToolsController::CefDevToolsController(
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content::WebContents* inspected_contents)
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: inspected_contents_(inspected_contents), weak_ptr_factory_(this) {
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DCHECK(inspected_contents_);
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}
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CefDevToolsController::~CefDevToolsController() {
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if (agent_host_) {
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agent_host_->DetachClient(this);
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AgentHostClosed(agent_host_.get());
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}
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for (auto& observer : observers_) {
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observer.OnDevToolsControllerDestroyed();
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}
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}
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bool CefDevToolsController::SendDevToolsMessage(
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const std::string_view& message) {
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CEF_REQUIRE_UIT();
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if (!EnsureAgentHost()) {
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return false;
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}
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agent_host_->DispatchProtocolMessage(
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this, base::as_bytes(base::make_span(message)));
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return true;
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}
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int CefDevToolsController::ExecuteDevToolsMethod(
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int suggested_message_id,
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const std::string& method,
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const base::Value::Dict* params) {
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CEF_REQUIRE_UIT();
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if (!EnsureAgentHost()) {
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return 0;
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}
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// Message IDs must always be increasing and unique.
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int message_id = suggested_message_id;
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if (message_id < next_message_id_) {
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message_id = next_message_id_++;
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} else {
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next_message_id_ = message_id + 1;
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}
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base::Value::Dict message;
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message.Set("id", message_id);
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message.Set("method", method);
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if (params) {
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message.Set("params", params->Clone());
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}
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std::string protocol_message;
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if (!base::JSONWriter::Write(message, &protocol_message)) {
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return 0;
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}
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agent_host_->DispatchProtocolMessage(
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this, base::as_bytes(base::make_span(protocol_message)));
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return message_id;
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}
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void CefDevToolsController::AgentHostClosed(
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content::DevToolsAgentHost* agent_host) {
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DCHECK(agent_host == agent_host_.get());
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agent_host_ = nullptr;
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for (auto& observer : observers_) {
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observer.OnDevToolsAgentDetached();
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}
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}
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void CefDevToolsController::AddObserver(Observer* observer) {
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CEF_REQUIRE_UIT();
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observers_.AddObserver(observer);
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}
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void CefDevToolsController::RemoveObserver(Observer* observer) {
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CEF_REQUIRE_UIT();
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observers_.RemoveObserver(observer);
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}
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void CefDevToolsController::DispatchProtocolMessage(
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content::DevToolsAgentHost* agent_host,
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base::span<const uint8_t> message) {
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if (observers_.empty()) {
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return;
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}
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std::string_view str_message(reinterpret_cast<const char*>(message.data()),
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message.size());
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if (!devtools_util::ProtocolParser::IsValidMessage(str_message)) {
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LOG(WARNING) << "Invalid message: " << str_message.substr(0, 100);
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return;
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}
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devtools_util::ProtocolParser parser;
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for (auto& observer : observers_) {
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if (observer.OnDevToolsMessage(str_message)) {
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continue;
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}
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// Only perform parsing a single time.
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if (parser.Initialize(str_message) && parser.IsFailure()) {
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LOG(WARNING) << "Failed to parse message: " << str_message.substr(0, 100);
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}
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if (parser.IsEvent()) {
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observer.OnDevToolsEvent(parser.method_, parser.params_);
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} else if (parser.IsResult()) {
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observer.OnDevToolsMethodResult(parser.message_id_, parser.success_,
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parser.params_);
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}
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}
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}
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bool CefDevToolsController::EnsureAgentHost() {
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if (!agent_host_) {
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agent_host_ =
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content::DevToolsAgentHost::GetOrCreateFor(inspected_contents_);
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if (agent_host_) {
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agent_host_->AttachClient(this);
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for (auto& observer : observers_) {
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observer.OnDevToolsAgentAttached();
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}
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}
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}
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return !!agent_host_;
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}
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