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// class name to use hovercards on can be passes as "data-class" parameter
var cl = document.currentScript.getAttribute("data-class") || "content";
var curURL = document.URL
// these will not attempt to get fetched, so can be used to override things
var hovercards = {
curURL : {}
};
function hover (target_link) {
var hovercard_data = hovercards[target_link.href.replace(/\/+$/, "")];
if (hovercard_data) {
var new_box = document.createElement("div");
new_box.classList.add("hovercard");
if (hovercard_data["pname"]) {
console.log(hovercard_data);
var nick = ""
if (hovercard_data["nickname"]) {
nick = " (" + hovercard_data["nickname"] + ")"
}
new_box.innerHTML = "<strong>" + hovercard_data["pname"] + nick + "</strong>"
} else {
if (hovercard_data["title"]) {
new_box.innerHTML = "<strong>" + hovercard_data["title"] + "</strong>"
}
}
if (hovercard_data["description"]) {
new_box.innerHTML = new_box.innerHTML + "<p>" + hovercard_data["description"] + "</p>";
}
if (hovercard_data["note"]) {
new_box.innerHTML = new_box.innerHTML + "<p>" + hovercard_data["note"] + "</p>";
}
// if image available, add it
if (hovercard_data["uphoto"]) {
new_box.innerHTML = "<img src='" + hovercard_data["uphoto"] + "' alt='" + hovercard_data["pname"] + "' /><br>" + new_box.innerHTML;
} else {
if (hovercard_data["image"]) {
new_box.innerHTML = "<img src='" + hovercard_data["image"] + "' alt='" + hovercard_data["title"] + "' /><br>" + new_box.innerHTML;
}
}
new_box.style.top = window.scrollY + target_link.getBoundingClientRect().top + "px";
new_box.style.left = window.scrollX + target_link.getBoundingClientRect().left + "px";
new_box.id = "tooltip";
document.body.appendChild(new_box);
}
}
function unhover (target_link) {
var active_hovercard = document.getElementById("tooltip");
if (active_hovercard) {
active_hovercard.parentNode.removeChild(active_hovercard);
}
}
var article = document.getElementsByClassName(cl);
for (let a of article) {
var links = a.getElementsByTagName("a");
for (var i = 0; i < links.length; i++) {
links[i].addEventListener("mouseover", function() {
hover(this);
});
links[i].addEventListener("mouseout", function() {
unhover(this);
});
// these handlers are so that the hovercard will appear/disappear
// with keyboard actions
links[i].addEventListener("onfocus", function() {
hover(this);
});
links[i].addEventListener("onfocusout", function() {
unhover(this);
});
let url = links[i].href.replace(/\/+$/, "");
if (!hovercards[url]) {
if (links[i].hostname == window.location.hostname && links[i].pathname == window.location.pathname) {
if (links[i].hash) {
// this is an achor somewhere on the same page, give a peek in case it's a footnote
let desc = document.getElementById(links[i].hash.replace("#", "")).innerText
hovercards[url] = {"description": desc}
}
} else {
let req = 'https://indieweb-glue.evgenykuznetsov.org/api/pageinfo?url=';
if (Boolean(links[i].closest('.h-card'))) {
req = 'https://indieweb-glue.evgenykuznetsov.org/api/hcard?url=';
};
req += url;
const r = encodeURI(req);
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
hovercards[url] = JSON.parse(this.responseText);
}
};
xmlhttp.open("GET", r, true);
xmlhttp.send();
}
}
}
}
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