Twitter Web Clientで画像を隠すやつ (URLマウスオーバーで表示)

hide-pictures.js

(function() {
var style = document.createElement("style");
style.innerText = ".AdaptiveMedia{display: none !important}\n.twitter-timeline-link.u-hidden{display: block !important}";
document.head.appendChild(style);
var setMouseOver = function(selectedElements) {
    var hidden;
    if(selectedElements) {
        hidden = selectedElements.find(".twitter-timeline-link.u-hidden");
    } else {
        hidden = $(".twitter-timeline-link.u-hidden");
    }
    hidden.on("mouseover", function(ev){
        ev.target.setAttribute("keep-mouseover", "");
        setTimeout(function(){
            if(ev.target.getAttribute("keep-mouseover") !== null){
                var adaptiveMedia = $(ev.target).closest(".tweet").find(".AdaptiveMedia");
                adaptiveMedia.css({cssText: "display:block !important"});
            }
        }, 500);
    });
    hidden.on("mouseout", function(ev){
        ev.target.removeAttribute("keep-mouseover");
        setTimeout(function(){
            if(ev.target.getAttribute("keep-mouseover") === null){
                var adaptiveMedia = $(ev.target).closest(".tweet").find(".AdaptiveMedia");
                adaptiveMedia.css({cssText: ""});
            }
        }, 1000);
    });
};
setMouseOver();
var mo = new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
        if(mutation.addedNodes.length !== 0) {
            for(var i=0; i<mutation.addedNodes.length; i++) {
                setMouseOver($(mutation.addedNodes[i]));
            }
        }
    });
});
mo.observe(document, {childList: true, subtree: true});
})();