Function resizeIframe

Pagetual/pagetual.user.js:13153–13216

(iframe, frameDoc, pageEle)

    }

    function resizeIframe(iframe, frameDoc, pageEle) {
        if (targetY >= 0) {
            window.scrollTo({ top: targetY, behavior: 'instant'});
            targetY = -1;
        }
        let curScroll = getBody(document).scrollTop || document.documentElement.scrollTop;
        if (ruleParser.curSiteRule.smart || forceState === 2) {
            let height = (getBody(frameDoc).scrollHeight || getBody(frameDoc).offsetHeight || 500);
            if (!iframe.style.height || parseInt(iframe.style.height) === 0 || height - parseInt(iframe.style.height) > window.innerHeight) {
                iframe.style.height = height + "px";
                iframe.style.minHeight = iframe.style.height;
            }
            iframe.style.width = "100%";
            frameDoc.documentElement.scrollTop = 0;
            frameDoc.documentElement.scrollLeft = 0;
        } else {
            if (pageEle) {
                if (document.body.scrollWidth) frameDoc.documentElement.style.width = document.body.scrollWidth + "px";
                let fitWidth = ruleParser.curSiteRule.fitWidth !== false;
                let targetElement = pageEle[0];
                if (!targetElement) return;
                if (pageEle.length > 1) {
                    targetElement = targetElement.parentNode;
                }
                let scrollHeight = targetElement.scrollHeight || targetElement.offsetHeight || 500;
                iframe.style.height = scrollHeight + "px";
                let scrollTop = 0, scrollLeft = 0;
                getBody(frameDoc).scrollTop = 0;
                getBody(frameDoc).scrollLeft = 0;
                while (targetElement && targetElement.offsetParent) {
                    targetElement.offsetParent.scrollTop = targetElement.offsetTop;
                    if (targetElement.offsetParent.scrollTop == 0) {
                        scrollTop += targetElement.offsetTop;
                    }
                    if (fitWidth) {
                        targetElement.offsetParent.scrollLeft = targetElement.offsetLeft;
                        if (targetElement.offsetParent.scrollLeft == 0) {
                            scrollLeft += targetElement.offsetLeft;
                        }
                    }
                    targetElement = targetElement.offsetParent;
                }
                frameDoc.documentElement.scrollTop = scrollTop;
                frameDoc.documentElement.scrollLeft = scrollLeft;
                if (frameDoc.documentElement.scrollTop == 0 && frameDoc.documentElement.scrollLeft == 0) {
                    getBody(frameDoc).scrollTop += scrollTop;
                    getBody(frameDoc).scrollLeft += scrollLeft;
                }
                if (!fitWidth && iframe.style.marginLeft == '0px') {
                    iframe.style.width = "100vw";
                    iframe.style.maxWidth = "100vw";
                    iframe.style.minWidth = "100vw";
                    var cWidth = document.body.clientWidth || document.documentElement.clientWidth;
                    var iWidth = window.innerWidth;
                    iframe.style.marginLeft = -iframe.getBoundingClientRect().left - (iWidth - cWidth) / 2 + "px";
                }
            }
        }