energy/example/browser-execute-javascript/execute-javascript.go

package main

import (
	"embed"
	"fmt"
	"github.com/energye/energy/cef"
	"github.com/energye/energy/common/assetserve"
	"time"
)

//go:embed resources
var resources embed.FS

func main() {
	//全局初始化 每个应用都必须调用的
	cef.GlobalCEFInit(nil, &resources)
	//创建应用
	cefApp := cef.NewApplication(nil)
	//指定一个URL地址，或本地html文件目录
	cef.BrowserWindow.Config.DefaultUrl = "http://localhost:22022/execute-javascript.html"
	cef.BrowserWindow.Config.Title = "Energy - execute-javascript"
	cef.BrowserWindow.Config.Icon = "resources/icon.ico"
	//内置http服务链接安全配置
	cef.SetBrowserProcessStartAfterCallback(func(b bool) {
		fmt.Println("主进程启动 创建一个内置http服务")
		//通过内置http服务加载资源
		server := assetserve.NewAssetsHttpServer()
		server.PORT = 22022
		server.AssetsFSName = "resources" //必须设置目录名
		server.Assets = &resources
		go server.StartHttpServer()
		//定时执行web js
		go timeTask()
	})

	//运行应用
	cef.Run(cefApp)
}

//定时执行web js
func timeTask() {
	var param0 = 0
	for {
		//每1秒钟执行一次
		time.Sleep(time.Second)
		info := cef.BrowserWindow.MainWindow()
		param0++
		//调用js中定义的函数GoExecuteJSFunc,并传递参数，但没有返回值
		var jsFunc = fmt.Sprintf("GoExecuteJSFunc(%d, '%d')", param0, time.Now().Second())
		fmt.Println("GoExecuteJSFunc:", jsFunc)
		info.Chromium().ExecuteJavaScript(jsFunc, "", 0)
	}
}