1 files changed, 51 insertions, 0 deletions
diff --git a/crocoite/data/extract-links.js b/crocoite/data/extract-links.js
new file mode 100644
index 0000000..5a4f9f0
--- /dev/null
+++ b/crocoite/data/extract-links.js
@@ -0,0 +1,51 @@
+/*	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() */
+})();