Function forceIframe

Pagetual/pagetual.user.js:13253–13427

(url, callback)

    var curForceIframe;
    function forceIframe(url, callback) {
        url = url.indexOf('=') == -1 ? url.replace(/#[^#]*/,"") : url;
        let curIframe = document.createElement('iframe'), iframeDoc, pageElement = null, inAction = true;
        let loadedHandler = () => {
            let getPageEle = () => {
                if (ruleParser.curSiteRule.smart) {
                    return null;
                } else {
                    if (!pageElement || pageElement.length === 0 || !pageElement[0].offsetParent) {
                        pageElement = ruleParser.getPageElement(iframeDoc, curIframe.contentWindow);
                    }
                    return pageElement;
                }
            };
            resizeIframe(curIframe, iframeDoc, getPageEle());
            let loaded = curIframe.getAttribute("loaded");
            if (loaded == "true") {
                return;
            }
            curIframe.setAttribute("loaded", "true");
            let getIframe = () => {
                return curIframe;
            };
            let getFrameDoc = () => {
                return iframeDoc;
            };
            ruleParser.insertPage(iframeDoc, [], url, ele => {
                callback(curIframe, loaded == "refresh");
                inAction = false;
            }, true);
            if (!loaded) {
                resizePool.push([getPageEle, getIframe, getFrameDoc]);
            }
        };
        let checkIframeTimer = setInterval(() => {
            if (!curIframe.parentNode) {
                clearInterval(checkIframeTimer);
                return curIframe.getAttribute("loaded") == "true" || callback(false);
            }
        }, 500);
        let code = ruleParser.curSiteRule.iframeInit;
        if (code) {
            let checkReady = setInterval(() => {
                try {
                    iframeDoc = curIframe.contentDocument || (curIframe.contentWindow && curIframe.contentWindow.document);
                } catch(e) {
                    clearInterval(checkReady);
                    return;
                }
                if (iframeDoc) {
                    clearInterval(checkReady);
                    try {
                        Function('win', 'iframe', '"use strict";' + code)(curIframe.contentWindow, curIframe);
                    } catch(e) {
                        debug(e);
                    }
                }
            }, 50);