rebase from live enviornment

wp/plugins/woocommerce/includes/gateways/paypal/assets/js/paypal-admin.js

@@ -0,0 +1,46 @@
+jQuery( function( $ ) {
+	'use strict';
+
+	/**
+	 * Object to handle PayPal admin functions.
+	 */
+	var wc_paypal_admin = {
+		isTestMode: function() {
+			return $( '#woocommerce_paypal_testmode' ).is( ':checked' );
+		},
+
+		/**
+		 * Initialize.
+		 */
+		init: function() {
+			$( document.body ).on( 'change', '#woocommerce_paypal_testmode', function() {
+				var test_api_username = $( '#woocommerce_paypal_sandbox_api_username' ).parents( 'tr' ).eq( 0 ),
+					test_api_password = $( '#woocommerce_paypal_sandbox_api_password' ).parents( 'tr' ).eq( 0 ),
+					test_api_signature = $( '#woocommerce_paypal_sandbox_api_signature' ).parents( 'tr' ).eq( 0 ),
+					live_api_username = $( '#woocommerce_paypal_api_username' ).parents( 'tr' ).eq( 0 ),
+					live_api_password = $( '#woocommerce_paypal_api_password' ).parents( 'tr' ).eq( 0 ),
+					live_api_signature = $( '#woocommerce_paypal_api_signature' ).parents( 'tr' ).eq( 0 );
+
+				if ( $( this ).is( ':checked' ) ) {
+					test_api_username.show();
+					test_api_password.show();
+					test_api_signature.show();
+					live_api_username.hide();
+					live_api_password.hide();
+					live_api_signature.hide();
+				} else {
+					test_api_username.hide();
+					test_api_password.hide();
+					test_api_signature.hide();
+					live_api_username.show();
+					live_api_password.show();
+					live_api_signature.show();
+				}
+			} );
+
+			$( '#woocommerce_paypal_testmode' ).trigger( 'change' );
+		}
+	};
+
+	wc_paypal_admin.init();
+});