quixote/src/descriptors/size_multiple.js

CSS unit and integration testing

// Copyright (c) 2014 Titanium I.T. LLC. All rights reserved. For license, see "README" or "LICENSE" file.
"use strict";

var ensure = require("../util/ensure.js");
var Descriptor = require("./descriptor.js");
var SizeDescriptor = require("./size_descriptor.js");
var Size = require("../values/size.js");

var Me = module.exports = function SizeMultiple(relativeTo, multiple) {
	ensure.signature(arguments, [ Descriptor, Number ]);

	this.should = this.createShould();

	this._relativeTo = relativeTo;
	this._multiple = multiple;
};
SizeDescriptor.extend(Me);

Me.create = function create(relativeTo, multiple) {
	return new Me(relativeTo, multiple);
};

Me.prototype.value = function value() {
	ensure.signature(arguments, []);

	return this._relativeTo.value().times(this._multiple);
};

Me.prototype.toString = function toString() {
	ensure.signature(arguments, []);

	var multiple = this._multiple;
	var base = this._relativeTo.toString();
	if (multiple === 1) return base;

	var desc;
	switch(multiple) {
		case 1/2: desc = "half of "; break;
		case 1/3: desc = "one-third of "; break;
		case 2/3: desc = "two-thirds of "; break;
		case 1/4: desc = "one-quarter of "; break;
		case 3/4: desc = "three-quarters of "; break;
		case 1/5: desc = "one-fifth of "; break;
		case 2/5: desc = "two-fifths of "; break;
		case 3/5: desc = "three-fifths of "; break;
		case 4/5: desc = "four-fifths of "; break;
		case 1/6: desc = "one-sixth of "; break;
		case 5/6: desc = "five-sixths of "; break;
		case 1/8: desc = "one-eighth of "; break;
		case 3/8: desc = "three-eighths of "; break;
		case 5/8: desc = "five-eighths of "; break;
		case 7/8: desc = "seven-eighths of "; break;
		default:
			if (multiple > 1) desc = multiple + " times ";
			else desc = (multiple * 100) + "% of ";
	}

	return desc + base;
};