shape.js - Ubuntu HTML5 API

# Ubuntu HTML5 API: shape.js

API Docs for: HTML-14.04-dev~bzr202

#### shape.js

    /*
     * Copyright (C) 2013 Adnane Belmadiaf <daker@ubuntu.com>
     * License granted by Canonical Limited
     *
     * This file is part of ubuntu-html5-ui-toolkit.
     *
     * This package is free software; you can redistribute it and/or modify
     * it under the terms of the GNU Lesser General Public License as
     * published by the Free Software Foundation; either version 3 of the
     * License, or
     * (at your option) any later version.

     * This package is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.

     * You should have received a copy of the GNU Lesser General Public
     * License along with this program. If not, see
     * <http://www.gnu.org/licenses/>.
     */

    /**
     * An Ubuntu Shape contains and decorates (with CSS styles) some markup, often an <em>img</em>.
     * @class Shape
     * @constructor
     * @namespace UbuntuUI
     * @example
          <div data-role="shape" id="shapeID">
            <img src="URI"/>
          </div>

          JavaScript access:
          var shape = UI.shape("shapeID");

     */
    var Shape = function (id) {
        this.id =  id;
    };

    Shape.prototype = {
        /**
         * Associate a function with the Click event
         * @method click
         * @param {Function} - The function to execute on click
         * @example
            UI.shape("id").click(function(){
             console.log("Clicked");
            });
         */
        click: function (callback) {
          if ( ! document.getElementById(this.id)) {
            throw "Error. id attribute: " + String(this.id) + " is not present in DOM";
          } else {
            var el = document.getElementById(this.id);
            el.addEventListener('click', callback);
          }
        },
        /**
         * Returns the DOM element associated with the id this widget is bind to.
         * @method element
         * @example
            var myshape = UI.shape("shapeid").element();
         */
        element: function () {
            return document.getElementById(this.id);
        }
    };