Function checkIframe

DownloadAllContent/DownloadAllContent.user.js:1265–1346

()

                        inited = true;
                        clearTimeout(loadtimeout);
                        async function checkIframe() {
                            try {
                                let doc = iframe.contentDocument || iframe.contentWindow.document;
                                if (!doc || !doc.body) {
                                    setTimeout(() => {
                                        checkIframe();
                                    }, 1000);
                                    return;
                                }
                                doc.body.scrollTop = 9999999;
                                doc.documentElement.scrollTop = 9999999;
                                if (!processFunc && validTimes++ > 5 && failedTimes++ < 2) {
                                    loadIframe(iframe.src);
                                    validTimes = 0;
                                    inited = false;
                                    return;
                                }
                                let base = doc.querySelector("base");
                                let nextPages = !disableNextPage && !processFunc && await checkNextPage(doc, base ? base.href : aTag.href);
                                if (nextPages) {
                                    if (!nextPages.length) nextPages = [nextPages];
                                    nextPages.forEach(nextPage => {
                                        var inArr=false;
                                        for(var ai=0;ai<aEles.length;ai++){
                                            if(aEles[ai].href==nextPage.href){
                                                inArr=true;
                                                break;
                                            }
                                        }
                                        if(!inArr){
                                            nextPage.innerText=aTag.innerText+"\t>>";
                                            aEles.push(nextPage);
                                            let targetIndex = curIndex;
                                            for(let a=0;a<insertSigns.length;a++){
                                                let signs=insertSigns[a],breakSign=false;
                                                if(signs){
                                                    for(let b=0;b<signs.length;b++){
                                                        let sign=signs[b];
                                                        if(sign==curIndex){
                                                            targetIndex=a;
                                                            breakSign=true;
                                                            break;
                                                        }
                                                    }
                                                }
                                                if(breakSign)break;
                                            }
                                            let insertSign = insertSigns[targetIndex];
                                            if(!insertSign)insertSigns[targetIndex] = [];
                                            insertSigns[targetIndex].push(aEles.length-1);
                                        }
                                    });
                                }
                                downIndex++;
                                downNum++;
                                let validData = processDoc(curIndex, aTag, doc, "", failedTimes < 2);
                                if (!validData) {
                                    downIndex--;