liferay-theme-tasks/lib/r2/liferay-r2/plugins/bg.js

A set of tasks for building and deploying Liferay Portal themes.

/**
 * SPDX-FileCopyrightText: © 2017 Liferay, Inc. <https://liferay.com>
 * SPDX-License-Identifier: MIT
 */

var urlLeft = /(?!left.*\/)(left)(?=.*\))/g;
var urlRight = /(?!right.*\/)(right)(?=.*\))/g;
var leftRe = /\s(left)\s/;
var rightRe = /\s(right)\s/;
var percRe = /(\d+)%/;
var plug = function (r2) {
	var r2bgimage = function (v) {
		if (urlLeft.test(v)) {
			v = v.replace(urlLeft, 'right');
		}
		else if (urlRight.test(v)) {
			v = v.replace(urlRight, 'left');
		}

		return v;
	};

	var r2bg = function (v) {
		v = r2bgimage(v);

		if (v.match(leftRe)) {
			v = v.replace(leftRe, ' right ');
		}
		else if (v.match(rightRe)) {
			v = v.replace(rightRe, ' left ');
		}
		else {
			var match = percRe.exec(v);

			if (match) {
				v = v.replace(percRe, 100 - match[1] + '%');
			}
		}

		return v;
	};

	r2.valueMap['background'] = r2bg;
	r2.valueMap['background-image'] = r2bgimage;
};

module.exports.plug = plug;