Make VisualSelector show first available multiple selector, refactor to make more maintainable (#1132)
parent
ab28f20eba
commit
df6e835035
@ -0,0 +1,154 @@
|
||||
// Include the getXpath script directly, easier than fetching
|
||||
!function (e, n) {
|
||||
"object" == typeof exports && "undefined" != typeof module ? module.exports = n() : "function" == typeof define && define.amd ? define(n) : (e = e || self).getXPath = n()
|
||||
}(this, function () {
|
||||
return function (e) {
|
||||
var n = e;
|
||||
if (n && n.id) return '//*[@id="' + n.id + '"]';
|
||||
for (var o = []; n && Node.ELEMENT_NODE === n.nodeType;) {
|
||||
for (var i = 0, r = !1, d = n.previousSibling; d;) d.nodeType !== Node.DOCUMENT_TYPE_NODE && d.nodeName === n.nodeName && i++, d = d.previousSibling;
|
||||
for (d = n.nextSibling; d;) {
|
||||
if (d.nodeName === n.nodeName) {
|
||||
r = !0;
|
||||
break
|
||||
}
|
||||
d = d.nextSibling
|
||||
}
|
||||
o.push((n.prefix ? n.prefix + ":" : "") + n.localName + (i || r ? "[" + (i + 1) + "]" : "")), n = n.parentNode
|
||||
}
|
||||
return o.length ? "/" + o.reverse().join("/") : ""
|
||||
}
|
||||
});
|
||||
|
||||
|
||||
const findUpTag = (el) => {
|
||||
let r = el
|
||||
chained_css = [];
|
||||
depth = 0;
|
||||
|
||||
// Strategy 1: Keep going up until we hit an ID tag, imagine it's like #list-widget div h4
|
||||
while (r.parentNode) {
|
||||
if (depth == 5) {
|
||||
break;
|
||||
}
|
||||
if ('' !== r.id) {
|
||||
chained_css.unshift("#" + CSS.escape(r.id));
|
||||
final_selector = chained_css.join(' > ');
|
||||
// Be sure theres only one, some sites have multiples of the same ID tag :-(
|
||||
if (window.document.querySelectorAll(final_selector).length == 1) {
|
||||
return final_selector;
|
||||
}
|
||||
return null;
|
||||
} else {
|
||||
chained_css.unshift(r.tagName.toLowerCase());
|
||||
}
|
||||
r = r.parentNode;
|
||||
depth += 1;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
|
||||
// @todo - if it's SVG or IMG, go into image diff mode
|
||||
var elements = window.document.querySelectorAll("div,span,form,table,tbody,tr,td,a,p,ul,li,h1,h2,h3,h4, header, footer, section, article, aside, details, main, nav, section, summary");
|
||||
var size_pos = [];
|
||||
// after page fetch, inject this JS
|
||||
// build a map of all elements and their positions (maybe that only include text?)
|
||||
var bbox;
|
||||
for (var i = 0; i < elements.length; i++) {
|
||||
bbox = elements[i].getBoundingClientRect();
|
||||
|
||||
// forget really small ones
|
||||
if (bbox['width'] < 15 && bbox['height'] < 15) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// @todo the getXpath kind of sucks, it doesnt know when there is for example just one ID sometimes
|
||||
// it should not traverse when we know we can anchor off just an ID one level up etc..
|
||||
// maybe, get current class or id, keep traversing up looking for only class or id until there is just one match
|
||||
|
||||
// 1st primitive - if it has class, try joining it all and select, if theres only one.. well thats us.
|
||||
xpath_result = false;
|
||||
|
||||
try {
|
||||
var d = findUpTag(elements[i]);
|
||||
if (d) {
|
||||
xpath_result = d;
|
||||
}
|
||||
} catch (e) {
|
||||
console.log(e);
|
||||
}
|
||||
|
||||
// You could swap it and default to getXpath and then try the smarter one
|
||||
// default back to the less intelligent one
|
||||
if (!xpath_result) {
|
||||
try {
|
||||
// I've seen on FB and eBay that this doesnt work
|
||||
// ReferenceError: getXPath is not defined at eval (eval at evaluate (:152:29), <anonymous>:67:20) at UtilityScript.evaluate (<anonymous>:159:18) at UtilityScript.<anonymous> (<anonymous>:1:44)
|
||||
xpath_result = getXPath(elements[i]);
|
||||
} catch (e) {
|
||||
console.log(e);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
if (window.getComputedStyle(elements[i]).visibility === "hidden") {
|
||||
continue;
|
||||
}
|
||||
|
||||
size_pos.push({
|
||||
xpath: xpath_result,
|
||||
width: Math.round(bbox['width']),
|
||||
height: Math.round(bbox['height']),
|
||||
left: Math.floor(bbox['left']),
|
||||
top: Math.floor(bbox['top'])
|
||||
});
|
||||
}
|
||||
|
||||
|
||||
// Inject the current one set in the include_filters, which may be a CSS rule
|
||||
// used for displaying the current one in VisualSelector, where its not one we generated.
|
||||
if (include_filters.length) {
|
||||
// Foreach filter, go and find it on the page and add it to the results so we can visualise it again
|
||||
for (const f of include_filters) {
|
||||
bbox = false;
|
||||
q = false;
|
||||
|
||||
if (!f.length) {
|
||||
console.log("xpath_element_scraper: Empty filter, skipping");
|
||||
continue;
|
||||
}
|
||||
|
||||
try {
|
||||
// is it xpath?
|
||||
if (f.startsWith('/') || f.startsWith('xpath:')) {
|
||||
q = document.evaluate(f.replace('xpath:', ''), document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
|
||||
} else {
|
||||
q = document.querySelector(f);
|
||||
}
|
||||
} catch (e) {
|
||||
// Maybe catch DOMException and alert?
|
||||
console.log("xpath_element_scraper: Exception selecting element from filter "+f);
|
||||
console.log(e);
|
||||
}
|
||||
|
||||
if (q) {
|
||||
bbox = q.getBoundingClientRect();
|
||||
} else {
|
||||
console.log("xpath_element_scraper: filter element "+f+" was not found");
|
||||
}
|
||||
|
||||
if (bbox && bbox['width'] > 0 && bbox['height'] > 0) {
|
||||
size_pos.push({
|
||||
xpath: f,
|
||||
width: Math.round(bbox['width']),
|
||||
height: Math.round(bbox['height']),
|
||||
left: Math.floor(bbox['left']),
|
||||
top: Math.floor(bbox['top'])
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Window.width required for proper scaling in the frontend
|
||||
return {'size_pos': size_pos, 'browser_width': window.innerWidth};
|
Loading…
Reference in new issue