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handle post-load DOM changes too #41

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handle post-load DOM changes too #41

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27 changes: 25 additions & 2 deletions Source/content_script.js
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Original file line number Diff line number Diff line change
@@ -1,5 +1,24 @@
walk(document.body);

if (window.MutationObserver) {
var observer = new MutationObserver(function (mutations) {
Array.prototype.forEach.call(mutations, function (m) {
if (m.type === 'childList') {
walk(m.target);
} else if (m.target.nodeType === 3) {
handleText(m.target);
}
});
});

observer.observe(document.body, {
childList: true,
attributes: false,
characterData: true,
subtree: true
});
}

function walk(node)
{
// I stole this function from here:
Expand Down Expand Up @@ -29,14 +48,18 @@ function walk(node)

function handleText(textNode)
{
var v = textNode.nodeValue;
var oldValue = textNode.nodeValue;
v = oldValue;

v = v.replace(/\bThe Cloud\b/g, "My Butt");
v = v.replace(/\bThe cloud\b/g, "My butt");
v = v.replace(/\bthe Cloud\b/g, "my Butt");
v = v.replace(/\bthe cloud\b/g, "my butt");

textNode.nodeValue = v;
// avoid infinite series of DOM changes
if (v !== oldValue) {
textNode.nodeValue = v;
}
}