/** * Manages the user's shopping cart. * Data stores as cookie of the user's browser. * * @requires jquery.cookie.js * @requires json2.min.js */ var ShoppingCart = new Object(); var ShoppingCartHelper = new Object(); (function() { // Settings of the shopping cart. var settings = { // The cookie settings. 1 year as default cookie: { expires: 365, name: 'sc' }, // Product quantity limitations. productQuantity: { maximum: 99, minimum: 1 } } // Products in the user's shopping cart. var products; // Function to be call when the user deletes a product. ShoppingCart.onDeleteProduct = null; /** * Auxiliary Functions */ var auxiliaryFunctions = new Object(); (function () { /** * Gets a product (that is in the cart) by its ID. * * @param number a product ID * @return object information about requested product * * If a product isn't in the cart, returns null. */ auxiliaryFunctions.getProduct = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!productId > 0) return null; // The product must be in the cart. if (!ShoppingCart.isProductInCart(productId)) return null; // Find and return a copy of the product. var product = new Object(); jQuery(products).each(function() { if (productId == this.id) { product = this; return false; } } ); return product; }; // END auxiliaryFunctions.getProduct = function( productId ) })(); // END Auxiliary Functions /** * Shopping Cart */ (function () { /** * Adds a product in the user's shopping cart. * * @param number a product ID */ ShoppingCart.addMultiproduct = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!productId > 0) return; // Skip the product if it's already in the cart. if (ShoppingCart.isProductInCart(productId)) return; // Add the product to the cart. products.push({ 'id' : productId, 'quantity' : 1 }); // Rewrite the cookie. ShoppingCart.rewriteCookie(); }; // END ShoppingCart.addProduct = function( productId ) /** * Adds a product in the user's shopping cart. * * @param number a product ID */ ShoppingCart.addProduct = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!productId > 0) return; // Skip the product if it's already in the cart. if (ShoppingCart.isProductInCart(productId)) return; // Add the product to the cart. products.push({ 'id' : productId, 'quantity' : 1 }); // Rewrite the cookie. ShoppingCart.rewriteCookie(); }; // END ShoppingCart.addProduct = function( productId ) // --------------------------------------------------------------------- /** * Calculates the total price of the order. * * @return number */ ShoppingCart.calculateTotalPrice = function() { var totalPrice = 0; // Calculate the total price. jQuery(products).each(function() { // Check whether the all needed data is correct. var isCorrect = typeof(this) == 'object' && 'price' in this && Number(this.price) > 0 && 'quantity' in this && Number(this.quantity) > 0; if (isCorrect) totalPrice += this.price * this.quantity; }); return totalPrice; }; // END ShoppingCart.calculateTotalPrice = function () // --------------------------------------------------------------------- /** * Decreases quantity of a product (that is in the cart) by 1. * * @param number a product ID */ ShoppingCart.decreaseProductQuantity = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!(productId > 0)) return; // Get the product. var product = auxiliaryFunctions.getProduct(productId); // Don't continue if the product isn't found in the cart. if (product == null) return; // Decrease the product quantity by 1 and rewrite the cookie. if (product.quantity > settings.productQuantity.minimum) { product.quantity--; ShoppingCart.rewriteCookie(); } }; // END ShoppingCart.decreaseProductQuantity = function (productId) /** * Deletes all products from the shopping cart. */ ShoppingCart.deleteAllProducts = function () { // Delete all products from the shopping cart if it's not empty. if (products.length > 0) { products = new Array(); // Rewrite the cookie. ShoppingCart.rewriteCookie(); } }; // END ShoppingCart.deleteAllProducts = function () /** * Deletes a product from the shopping cart. * * @param number a product ID */ ShoppingCart.deleteProduct = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!(productId > 0)) return; // Skip the product if it's not in the cart. if (!ShoppingCart.isProductInCart(productId)) return; // Delete the product from the cart. jQuery(products).each(function(index, value) { if (productId == value.id) { products.splice(index, 1); return false; } }); // Rewrite the cookie. ShoppingCart.rewriteCookie(); // Invoke the onDeleteProduct event handler if ("onDeleteProduct" in ShoppingCart && typeof(ShoppingCart.onDeleteProduct) == "function") ShoppingCart.onDeleteProduct(); }; // END ShoppingCart.deleteProduct = function () /** * Gets quantity of a product. * * @param number a product ID * @return number quantity of a product * * If a requested product is not in the cart, returns null. */ ShoppingCart.getProductQuantity = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!productId > 0) return null; // Get the product. var product = auxiliaryFunctions.getProduct(productId); // Don't continue if the product isn't found in the cart. if (product == null) return null; // Return the product quantity. return product.quantity; }; // END ShoppingCart.getProductQuantity = function (productId) /** * Increases quantity of a product (that is in the cart) by 1. * * @param number a product ID */ ShoppingCart.increaseProductQuantity = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!(productId > 0)) return; // Get the product. var product = auxiliaryFunctions.getProduct(productId); // Don't continue if the product isn't found in the cart. if (product == null) return; // Increase the product quantity by 1 and rewrite the cookie. if (product.quantity < settings.productQuantity.maximum) { product.quantity++; ShoppingCart.rewriteCookie(); } }; // END ShoppingCart.increaseProductQuantity = function(productId) /** * Checks whether a product is in the user's shopping cart. * * @param number a product ID * @return boolean */ ShoppingCart.isProductInCart = function(productId) { // Convert the product ID to an integer number. productId = parseInt(productId); // A product ID must be a number that is greater than zero. if (!productId > 0) return false; // Check whether the product in the user's shopping cart. var isProductInCart = false; jQuery(products).each(function() { if (productId == this.id) { isProductInCart = true; return false; } }); // Return the result. return isProductInCart; }; // END ShoppingCart.isProductInCart = function (productId) // --------------------------------------------------------------------- /** * Obtains the list of products in the user's shopping cart. */ ShoppingCart.reloadFromCookie = function() { // Read the encoded value from the cookie. var encodedValue = jQuery.cookie(settings.cookie.name); // Process the encoded value. if (encodedValue) { // If the cookie value is set, it must be a JSON encoded array. try { // Try to decode the JSON encoded value. decodedValue = JSON.parse( encodedValue ); if (decodedValue instanceof Array) { // Filter the array. products = new Array(); jQuery(decodedValue).each(function() { // Check whether the array element represents a correct information about a product. var isCorrect = (typeof(this) == 'object' && 'id' in this && 'quantity' in this); // Add the product to the shopping cart, if the data is correct. if ( isCorrect ) products.push(this); }); } else { products = new Array(); } } catch ( e ) { products = new Array(); } } else { products = new Array(); } // Rewrite the cookie. ShoppingCart.rewriteCookie(); }; // END ShoppingCart.reloadFromCookie = function () /** * Rewrites the cookie that holds information about products in the * user's shopping cart. */ ShoppingCart.rewriteCookie = function() { // The cookie options. var options = { expires: settings.cookie.expires, path: '/' }; // Rewrite the cookie. if (products && products.length > 0) { jQuery.cookie(settings.cookie.name, JSON.stringify(products), options); } else { jQuery.cookie(settings.cookie.name, null); jQuery.cookie(settings.cookie.name, null, { domain: 'gojoy.com.ua' } ); jQuery.cookie(settings.cookie.name, null, { domain: 'gojoy.ru' } ); jQuery.cookie(settings.cookie.name, null, { domain: 'test-ver.gojoy.ru' } ); jQuery.cookie(settings.cookie.name, null, { domain: 'www.gojoy.com.ua' } ); jQuery.cookie(settings.cookie.name, null, { domain: 'www.gojoy.ru' } ); } }; // END ShoppingCart.rewriteCookie = function () })(); // END Shopping Cart // Obtains the list of products in the user's shopping cart. ShoppingCart.reloadFromCookie(); /** * Shopping Cart Helper */ (function($) { /** * Refreshes the counter of products in the shopping cart. */ ShoppingCartHelper.refreshCounter = function() { // Refresh the counter. $('#number-of-products-in-cart').text(products.length); // Update the link to the favorites. if (products.length > 0) { $('#link-to-cart').removeClass('no-items').addClass('has-items'); } else { $('#link-to-cart').removeClass('has-items').addClass('no-items'); } }; // END ShoppingCartHelper.refreshCounter = function () /** * Refreshes the product list of the shopping cart. */ ShoppingCartHelper.refreshList = function() { $('#shopping-cart-products > li').each(function() { var listItem = jQuery(this); // Get the product ID. var productId = listItem.attr('id'); // Removes the product from the cart. $('a.remove-from-shopping-cart', this).click(function() { // Delete the list item. listItem.remove(); // Delete the product from the cart. ShoppingCart.deleteProduct(productId); // Update the number of products. ShoppingCartHelper.refreshCounter(); // Recalculate the total price. ShoppingCartHelper.refreshTotalPrice(); }); // Show the current number of the product. var quantityInput = $('input.quantity-value', this); quantityInput.val(ShoppingCart.getProductQuantity(productId)); // Increases the product quantity. $('a.increase', this).click(function() { // Increase the product quantity. ShoppingCart.increaseProductQuantity(productId); // Show the current number of the product. quantityInput.val(ShoppingCart.getProductQuantity(productId)); // Recalculate the total price. ShoppingCartHelper.refreshTotalPrice(); }); // Decreases the product quantity. $('a.decrease', this).click(function() { // Decrease the product quantity. ShoppingCart.decreaseProductQuantity(productId); // Show the current number of the product. quantityInput.val(ShoppingCart.getProductQuantity(productId)); // Recalculate the total price. ShoppingCartHelper.refreshTotalPrice(); }); }); // Recalculate the total price. ShoppingCartHelper.refreshTotalPrice(); }; // END ShoppingCartHelper.refreshList = function () /** * Refreshes the total price of the order. */ ShoppingCartHelper.refreshTotalPrice = function() { // Calculte the total price and show it. $('#total-price-value').text(ShoppingCart.calculateTotalPrice()); }; // END ShoppingCartHelper.refreshTotalPrice = function () })(jQuery); // END Shopping Cart Helper })(); // END Shopping Cart and Shopping Cart Helper