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/* Extract links from a page
*/
(function () {
/* --- copy&paste from click.js --- */
/* Element is visible if itself and all of its parents are
*/
function isVisible (o) {
if (o === null || !(o instanceof Element)) {
return true;
}
let style = window.getComputedStyle (o);
if ('parentNode' in o) {
return style.display !== 'none' && isVisible (o.parentNode);
} else {
return style.display !== 'none';
}
}
/* Elements are considered clickable if they are a) visible and b) not
* disabled
*/
function isClickable (o) {
return !o.hasAttribute ('disabled') && isVisible (o);
}
/* --- end copy&paste */
let ret = [];
['a[href]', 'area[href]'].forEach (function (s) {
let x = document.querySelectorAll(s);
for (let i=0; i < x.length; i++) {
if (isClickable (x[i])) {
ret.push (x[i].href);
}
}
});
/* If Chrome loads plain-text documents it’ll wrap them into <pre>. Check those
* for links as well, assuming the whole line is a link (i.e. list of links). */
let x = document.querySelectorAll ('body > pre');
for (let i=0; i < x.length; i++) {
if (isVisible (x[i])) {
x[i].innerText.split ('\n').forEach (function (s) {
if (s.match ('^https?://')) {
ret.push (s);
}
});
}
}
return ret; /* immediately return results, for use with Runtime.evaluate() */
})();
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