MediaWiki:CharCount.js

$(function () {
	var myPlace = document.getElementById('CharCount');
	myPlace.innerHTML =$(function getID(id) {
		return document.getElementById(id);
	}
	);
	$(function addNumericOptions(id, min, max, defIndex) {
		var s = getID(id);
		for (ii=min; ii<=max; ii++) {
			var option =  document.createElement("option");
			option.text = ii;
			option.value = ii;
			s.add(option);
		}
	s.value = defIndex;
	});
	$(function getMaxChars() {
		var maxChar = getID('chars');
		return maxChar.value;
	}
	);
	$(function getLinkDiscount() {
		checkDiscount = getID('linkAbbreviate');
		if (!checkDiscount.checked) return 0;
	
		input = getID('text');
		sub = getID('linkChars');
		let text = "" + input.value.length;
		text = text.replaceAll('\\n', ' ');
		text = text.replaceAll('\\t', ' ');
		var subLength = sub.value;
		var discount = 0;
		const parts = input.value.split(" ");
		for (ii=0; ii<parts.length; ii++) {
			part = parts[ii];
			l1 = part.length;
			l2 = part.replaceAll('http','').length;
			if (l1>l2) {
				l1 = part.length;
				discount+= l1-subLength;
			}
		}
		return discount;
	}
	);
	$(function updateParamValues() {
		var c = getParamValue('c');
		lengthChoice = getID('chars');
		lengthChoice.value = c;
		var l = getParamValue('l');
		la = getID('linkAbbreviate');
		if (l!=null) {
			linkChoice = getID('linkChars');
			linkChoice.value = l;
			la.checked = true;
		} else {
			la.checked = false;
		}
		var text = getID('text');
		text.rows = c/25;
	}
	);
	$(function getParamValue(name) {
		var url = window.location.href;
		l1 = url.length;
		l2 = url.replaceAll('?','').length;
		if (l1==l2) {
			return null;
		}
		const params = url.split('?')[1]; // the params, hopefully
		const paramValues = params.split('&');
		for (ii=0; ii<paramValues.length; ii++) {
			paramValue = paramValues[ii];
			//alert(paramValue);
			paramName = paramValue.split('=')[0];
			if (paramName==name) {
				return paramValue.split('=')[1];
			}
		}
		return null;
	}
	);
	$(function updateOutput() {
		ld = getLinkDiscount();
		cc = getCharacterCount();
		ccd = cc-ld;
		max = getMaxChars();
		rmn = max-ccd;
	
		var warningLevel = getID('warningLevel');
		warningLevel.style.background = "rgb(0,255,0)";
		if (rmn<10) {
			warningLevel.style.background = "rgb(255,255,0)";
		}
		if (rmn<0) {
			warningLevel.style.background = "rgb(255,0,0)";
		}
		var v = "This content uses " + ccd + " characters of " +
			getMaxChars() +	" allowed.  " +
			rmn + " characters to spare.";
		var o = getID('outputCount');
		o.value = v;
	}
	);
	$(function getCharacterCount() {
		input = getID('text');
		return input.value.length;
	}
	);
	$(function setup() {
		addNumericOptions('chars', 40, 1000, 280);
		addNumericOptions('linkChars', 0, 100, 13);
		updateParamValues();
		updateOutput();
	}
	);
}());