155 lines
4.8 KiB
C++
155 lines
4.8 KiB
C++
#include "stdafx.h"
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#include "client_app.h"
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#include <string>
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#include "include/cef_cookie.h"
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#include "include/cef_process_message.h"
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#include "include/cef_task.h"
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#include "include/cef_v8.h"
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#include "cef_control/util/util.h"
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#include "cef_control/app/js_handler.h"
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#include "cef_control/app/ipc_string_define.h"
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#include "cef_control/app/cef_js_bridge.h"
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namespace nim_comp
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{
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//////////////////////////////////////////////////////////////////////////////////////////
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// CefRenderProcessHandler methods.
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void ClientApp::OnRenderThreadCreated(CefRefPtr<CefListValue> extra_info)
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{
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}
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void ClientApp::OnWebKitInitialized()
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{
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/**
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* JavaScript 扩展代码，这里定义一个 NimCefWebFunction 对象提供 call 方法来让 Web 端触发 native 的 CefV8Handler 处理代码
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* param[in] functionName 要调用的 C++ 方法名称
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* param[in] params 调用该方法传递的参数，在前端指定的是一个 Object，但转到 Native 的时候转为了字符串
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* param[in] callback 执行该方法后的回调函数
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* 前端调用示例
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* NimCefWebHelper.call('showMessage', { message: 'Hello C++' }, (arguments) => {
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* console.log(arguments)
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* })
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*/
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std::string extensionCode = R"(
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var NimCefWebInstance = {};
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(() => {
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NimCefWebInstance.call = (functionName, arg1, arg2) => {
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if (typeof arg1 === 'function') {
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native function call(functionName, arg1);
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return call(functionName, arg1);
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} else {
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const jsonString = JSON.stringify(arg1);
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native function call(functionName, jsonString, arg2);
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return call(functionName, jsonString, arg2);
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}
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};
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NimCefWebInstance.register = (functionName, callback) => {
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native function register(functionName, callback);
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return register(functionName, callback);
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};
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})();
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)";
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CefRefPtr<CefJSHandler> handler = new CefJSHandler();
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if (!render_js_bridge_.get())
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render_js_bridge_.reset(new CefJSBridge);
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handler->AttachJSBridge(render_js_bridge_);
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CefRegisterExtension("v8/extern", extensionCode, handler);
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}
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void ClientApp::OnBrowserCreated(CefRefPtr<CefBrowser> browser)
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{
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if (!render_js_bridge_.get())
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render_js_bridge_.reset(new CefJSBridge);
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}
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void ClientApp::OnBrowserDestroyed(CefRefPtr<CefBrowser> browser)
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{
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}
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CefRefPtr<CefLoadHandler> ClientApp::GetLoadHandler()
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{
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return NULL;
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}
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bool ClientApp::OnBeforeNavigation(
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CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefFrame> frame,
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CefRefPtr<CefRequest> request,
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NavigationType navigation_type,
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bool is_redirect)
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{
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return false;
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}
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void ClientApp::OnContextCreated(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, CefRefPtr<CefV8Context> context)
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{
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}
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void ClientApp::OnContextReleased(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, CefRefPtr<CefV8Context> context)
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{
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render_js_bridge_->RemoveCallbackFuncWithFrame(frame);
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render_js_bridge_->UnRegisterJSFuncWithFrame(frame);
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}
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void ClientApp::OnUncaughtException(
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CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefFrame> frame,
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CefRefPtr<CefV8Context> context,
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CefRefPtr<CefV8Exception> exception,
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CefRefPtr<CefV8StackTrace> stackTrace)
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{
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}
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void ClientApp::OnFocusedNodeChanged(
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CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefFrame> frame,
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CefRefPtr<CefDOMNode> node)
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{
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bool is_editable = (node.get() && node->IsEditable());
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if (is_editable != last_node_is_editable_)
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{
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// Notify the browser of the change in focused element type.
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last_node_is_editable_ = is_editable;
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CefRefPtr<CefProcessMessage> message = CefProcessMessage::Create(kFocusedNodeChangedMessage);
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message->GetArgumentList()->SetBool(0, is_editable);
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browser->SendProcessMessage(PID_BROWSER, message);
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}
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}
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bool ClientApp::OnProcessMessageReceived(
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CefRefPtr<CefBrowser> browser,
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CefProcessId source_process,
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CefRefPtr<CefProcessMessage> message)
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{
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ASSERT(source_process == PID_BROWSER);
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// 收到 browser 的消息回复
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const CefString& message_name = message->GetName();
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if (message_name == kExecuteJsCallbackMessage)
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{
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int callback_id = message->GetArgumentList()->GetInt(0);
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bool has_error = message->GetArgumentList()->GetBool(1);
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CefString json_string = message->GetArgumentList()->GetString(2);
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// 将收到的参数通过管理器传递给调用时传递的回调函数
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render_js_bridge_->ExecuteJSCallbackFunc(callback_id, has_error, json_string);
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}
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else if (message_name == kCallJsFunctionMessage)
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{
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CefString function_name = message->GetArgumentList()->GetString(0);
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CefString json_string = message->GetArgumentList()->GetString(1);
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int cpp_callback_id = message->GetArgumentList()->GetInt(2);
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int64 frame_id = message->GetArgumentList()->GetInt(3);
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// 通过 C++ 执行一个已经注册过的 JS 方法
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// frame_id 小于 0 则可能是 browser 进程的 browser 是无效的，所以这里为了避免出现错误就获取一个顶层 frame 执行代码
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render_js_bridge_->ExecuteJSFunc(function_name, json_string, frame_id < 0 ? browser->GetMainFrame() : browser->GetFrame(frame_id), cpp_callback_id);
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}
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return false;
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}
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} |