grunt-mangony/test/fixtures/helpers/helper-pictureData.js

Grunt wrapper for Mangony, another static site generator - fast, simple and powerful.

(function() {
	module.exports.register = function(Handlebars, options) {

		/*
		 * Picture Data helper.
		 * Returns an object with the images you provided as param.
		 *
		 *
		 * @Author Sebastian Fitzner
		 *
		 * @param {Array} data - Pictures JSON file
		 * @param {Array} name - Names of the image presets
		 * @param {Object} block - Inner content of block
		 *
		 * @return object
		 */
		Handlebars.registerHelper('pictureData', function(data, names, block) {
			if (!data) return;

			var picData = names.map(function (name) {
				var obj = {
					"presetName": name,
					"data": createPictureData(data, name)
				};

				return obj;
			});

			return block.fn(picData);
		});


		function createPictureData(data, name) {
			var arr = [];
			var content = data.filter(function(key) {
				return key[name];
			});

			var picData = content[0][name].filter(function(item) {

				if (arr.indexOf(item.breakpoint) === -1) {
					arr.push(item.breakpoint);

					return true;
				}

				return false;
			});

			return picData;
		}
	};
}).call(this);