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/*jshint laxbreak:true */
(function (window) {
'use strict';
var htmlEscapes = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
'\'': ''',
'`': '`'
};
var escapeHtmlChar = function (chr) {
return htmlEscapes[chr];
};
var reUnescapedHtml = /[&<>"'`]/g;
var reHasUnescapedHtml = new RegExp(reUnescapedHtml.source);
var escape = function (string) {
return (string && reHasUnescapedHtml.test(string))
? string.replace(reUnescapedHtml, escapeHtmlChar)
: string;
};
/**
* Sets up defaults for all the Template methods such as a default template
*
* @constructor
*/
function Template() {
this.defaultTemplate
= '<li data-id="{{id}}" class="{{completed}}">'
+ '<div class="view">'
+ '<input class="toggle" type="checkbox" {{checked}}>'
+ '<label>{{title}}</label>'
+ '<button class="destroy"></button>'
+ '</div>'
+ '</li>';
}
/**
* Creates an <li> HTML string and returns it for placement in your app.
*
* NOTE: In real life you should be using a templating engine such as Mustache
* or Handlebars, however, this is a vanilla JS example.
*
* @param {object} data The object containing keys you want to find in the
* template to replace.
* @returns {string} HTML String of an <li> element
*
* @example
* view.show({
* id: 1,
* title: "Hello World",
* completed: 0,
* });
*/
Template.prototype.show = function (data) {
var i, l;
var view = '';
for (i = 0, l = data.length; i < l; i++) {
var template = this.defaultTemplate;
var completed = '';
var checked = '';
if (data[i].completed) {
completed = 'completed';
checked = 'checked';
}
template = template.replace('{{id}}', data[i].id);
template = template.replace('{{title}}', escape(data[i].title));
template = template.replace('{{completed}}', completed);
template = template.replace('{{checked}}', checked);
view = view + template;
}
return view;
};
/**
* Displays a counter of how many to dos are left to complete
*
* @param {number} activeTodos The number of active todos.
* @returns {string} String containing the count
*/
Template.prototype.itemCounter = function (activeTodos) {
var plural = activeTodos === 1 ? '' : 's';
return '<strong>' + activeTodos + '</strong> item' + plural + ' left';
};
/**
* Updates the text within the "Clear completed" button
*
* @param {[type]} completedTodos The number of completed todos.
* @returns {string} String containing the count
*/
Template.prototype.clearCompletedButton = function (completedTodos) {
if (completedTodos > 0) {
return 'Clear completed';
} else {
return '';
}
};
// Export to window
window.app = window.app || {};
window.app.Template = Template;
})(window);
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