Gmail Fluid App Userscript

fluid_gmail.js

window.fluid.dockBadge = '';
setTimeout(updateDockBadge, 1000);
setTimeout(updateDockBadge, 3000);
setInterval(updateDockBadge, 5000);

function updateDockBadge() {
	var newBadge = '';
	
	var res = findInboxAnchorMatchResult();
	if (res) {
		newBadge = res[1];
	}

	window.fluid.dockBadge = newBadge;
}

function findInboxAnchorMatchResult() {
	var xpathType = XPathResult.FIRST_ORDERED_NODE_TYPE;
	var xpathResult = document.evaluate('//div[@role="navigation"]', document, null, xpathType, null);
	var canvas = xpathResult.singleNodeValue;
	//console.log('canvas: ' + canvas);
	if (!canvas) return null;

	// get document
	var doc =  canvas.contentDocument || canvas.ownerDocument;
	//console.log('doc: ' + doc);
	if (!doc) return null;

	// loop thru anchor tags
	var anchorEls = doc.getElementsByTagName('a');
	//console.log('anchors: ' + anchorEls.length);
	if (!anchorEls || !anchorEls.length) return null;

	for (var i = 0; i < anchorEls.length; i++) {
		var anchorEl = anchorEls[i];
		//console.log('anchorEl: '+ anchorEl);
		
		var res = matchInAnchorEl(anchorEl);
		if (res) {
			//console.log('res: '+ res);
			return res;
		}
	}

	return null;
}

function matchInAnchorEl(anchorEl) {
	var text = '' + anchorEl.innerText;
	if (!text.length) return null;
	if (-1 == text.indexOf('(')) return null;

	var regex = /\s*Inbox\s*\((\d+)\)[^\d]*/;
	var res = text.match(regex);
	if (res && res.length > 1) {
		//console.log('res: '+ res);
		return res;
	} else {
		return null;
	}
}

Could not get your versions working, mine is just a few lines at https://gist.github.com/tordans/85cbaa856b93b52e9a1465004569218e

FYI, this is no longer necessary with Version 2+ of the Fluid app.