Common function library for Mangadex. Should be required by other userscripts.
目前为
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.icu/scripts/372223/629092/Mangadex%20Common.js
// ==UserScript==
// @name Mangadex Common
// @version 1
// @description Common function library for Mangadex. Should be required by other userscripts.
// @match https://mangadex.org/*
// @grant unsafeWindow
// ==/UserScript==
function Print(x) {
// unsafeWindow needed to print to Web Console in firefox.
unsafeWindow.console.log(x);
}
function getSnapshotByXpath(path,node=document) {
return document.evaluate(path, node, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
}
function getItterByXpath(path,node=document) {
return document.evaluate(path, node, null, XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null);
}
function getElementByXpath(path,node=document) {
return document.evaluate(path, node, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}
// NOTE: I do not promot the use of this xpath builder. It is used soly to make ways I commonly use xpaths easier.
// syntax will change. Do NOT depend on this.
// TODO: small AST?
function XPath(xpath_str="") {
let xp = this;
if (!( xp instanceof XPath) ) {
return new XPath(xpath_str);
}
xp.xpath=xpath_str;
function toStr(o) {
if (o instanceof XPath) {
return o.asText();
}
else {
return o;
}
}
xp.contains = function(attr,text) {
xp.xpath += `contains(concat(' ', normalize-space(${attr}), ' '), ' ${text} ')`;
return xp;
};
xp.with = function(selector) {
xp.xpath += `[${toStr(selector)}]`;
return xp;
};
xp.append = function(text) {
xp.xpath += text;
return xp;
};
xp.and = function(o) {
xp.xpath += " and " + toStr(o);
return xp;
}
xp.or = function(o) {
xp.xpath += " or " + toStr(o);
return xp;
}
xp.asText = function() {
return xp.xpath;
};
xp.getElement = function(node=document) {
return getElementByXpath(xp.xpath,node);
};
xp.getSnapshot = function(node=document) {
return getSnapshotByXpath(xp.xpath,node);
};
xp.getItter = function(node=document) {
return getItterByXpath(xp.xpath,node);
};
return xp;
}
function htmlToElement(html) {
var template = document.createElement('template');
html = html.trim(); // Never return a text node of whitespace as the result
template.innerHTML = html;
return template.content.firstChild;
}
// Checks the page for {xpath} every {delay} milliseconds up to {cnt} times. Runs {fn} once found.
// Used to wait for required elements to load before running functions.
function checkLoop(xpath,fn,cnt=50,delay=100) {
Print(`Checking for xpath <${xpath}>`);
if (getElementByXpath(xpath)) {
fn();
}
else if (cnt != 0) {
setTimeout(function() { CheckLoop(cnt - 1); },delay);
}
else {
Print(`Failed to find xpath <${xpath}>`);
}
}