webview远程调试设置下载目录

关键代码：

waitWs(ws.Page.enable())
waitWs(ws.Browser.setDownloadBehavior(behavior="allow"; downloadPath="g:\a"))
ws.on("message",function(msg){
    //console.dumpJson(msg)
    var data = web.json.tryParse(msg.data)
    if(data.method == "Page.downloadProgress"){
        console.dumpJson(msg)
        //下载进度
        console.debug("下载进度:", data.params.receivedBytes ++ "/" ++ data.params.totalBytes, data.params.state)
    }else if(data.method == "Page.downloadWillBegin"){
        console.debug("开始下载:", data.params.suggestedFilename, data.params.url )
    }
})