function crosswarpex_nativecall(message, callback) {
const pageurl = document.location.origin + document.location.pathname;
let EVENT_FROM_PAGE = “__crosswarpex__rw_chrome_ext_” + btoa(pageurl);
let EVENT_REPLY = “__crosswarpex__rw_chrome_ext_reply_” + btoa(pageurl);
if(typeof message.callback == “undefined”) {
message.callback = EVENT_REPLY + “__callback__”;
} else {
message.callback = EVENT_REPLY + “__callback__” + message.callback;
}
if(typeof message.origin != “undefined”) {
message.origin = location.protocol + “//” + encodeURIComponent(location.hostname);
}
try {
if (message.cmd == “setcallback”) {
let transporter = document.getElementById(“setcallback”);
let tag_id = “”;
if (transporter == undefined) {
if(message.exfunc.fname == “new”){
let pushcbfname = message.exfunc.args[0].callback;

transporter = document.createElement(“dummy”);
transporter.id = “setcallback”;

tag_id = “_crosswarpex_dummy_id_” + new Date().getTime();
if (message.id && typeof message.id == “string”) tag_id = message.id;

transporter.setAttribute(“tag”, tag_id);
transporter.addEventListener(EVENT_REPLY, function (event) {
let result = this.getAttribute(“result”);
let tagid = this.getAttribute(“tag”);
result = JSON.parse(result);
let cbfunction = result.callback;
let idx = cbfunction.indexOf(“_setcallback_”);
if (idx > -1) {
let _tagid = cbfunction.substr(idx + 13);
if (_tagid != tagid) return;
if (typeof document.activeElement.contentDocument != “undefined” || (document.activeElement.tagName).toUpperCase() == “BODY”) return;
let _pushcbfname = cbfunction.substr(0, idx);
if (_pushcbfname != pushcbfname) return;
dispatchEvent(new Event(“__crosswarpex_extension_setcallback__”));
}
});
(document.body || document.documentElement).appendChild(transporter);

window.addEventListener(‘__crosswarpex_extension_setcallback__’, function(event){
var result = JSON.parse(document.getElementById(“setcallback”).getAttribute(‘result’));
var pcbfname = pushcbfname;
var pcbframeidx = pcbfname.lastIndexOf(“.”);
if(pcbframeidx > 0){
pcbfname = pcbfname.substring(pcbframeidx+1, pcbfname.length);
}
window[pcbfname](JSON.stringify(result.reply));
});
} else {
console.log(“[contentscript] invalid parameter”);
return;
}
} else {
tag_id = transporter.getAttribute(“tag”);
}

try {
for (i = 0; i < message.exfunc.args.length; i++) { message.exfunc.args[i].callback = message.exfunc.args[i].callback + "_setcallback_" + tag_id; } let event = document.createEvent("Events"); event.initEvent(EVENT_FROM_PAGE, true, false); transporter.setAttribute("data", JSON.stringify(message)); transporter.dispatchEvent(event); } catch (e) { console.log("[contentscript] error", e); } } else { let tag_id = "_crosswarpex_dummy_id_" + new Date().getTime(); let transporter = document.createElement("dummy"); if (!message.id || typeof message.id != "string") transporter.id = tag_id; else transporter.id = message.id; transporter.addEventListener(EVENT_REPLY, function (event) { let result = this.getAttribute("result"); if (this.parentNode) this.parentNode.removeChild(this); if (typeof callback == "function") { result = JSON.parse(result); callback(result); } }); let event = document.createEvent("Events"); event.initEvent(EVENT_FROM_PAGE, true, false); transporter.setAttribute("data", JSON.stringify(message)); (document.body || document.documentElement).appendChild(transporter); transporter.dispatchEvent(event); } } catch (e) { console.log("[contentscript] error", e); } }