text: /* global tb_remove, JSON */
  window.wp = window.wp || {};
  
  (function( $, wp ) {
  	'use strict';
  
  	wp.envato = {};
  
  	/**
  	 * User nonce for ajax calls.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var string
  	 */
  	wp.envato.ajaxNonce = window._wpUpdatesSettings.ajax_nonce;
  
  	/**
  	 * Localized strings.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var object
  	 */
  	wp.envato.l10n = window._wpUpdatesSettings.l10n;
  
  	/**
  	 * Whether filesystem credentials need to be requested from the user.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var bool
  	 */
  	wp.envato.shouldRequestFilesystemCredentials = null;
  
  	/**
  	 * Filesystem credentials to be packaged along with the request.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var object
  	 */
  	wp.envato.filesystemCredentials = {
  		ftp: {
  			host: null,
  			username: null,
  			password: null,
  			connectionType: null
  		},
  		ssh: {
  			publicKey: null,
  			privateKey: null
  		}
  	};
  
  	/**
  	 * Flag if we're waiting for an update to complete.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var bool
  	 */
  	wp.envato.updateLock = false;
  
  	/**
  	 * * Flag if we've done an update successfully.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var bool
  	 */
  	wp.envato.updateDoneSuccessfully = false;
  
  	/**
  	 * If the user tries to update a plugin while an update is
  	 * already happening, it can be placed in this queue to perform later.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var array
  	 */
  	wp.envato.updateQueue = [];
  
  	/**
  	 * Store a jQuery reference to return focus to when exiting the request credentials modal.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @var jQuery object
  	 */
  	wp.envato.$elToReturnFocusToFromCredentialsModal = null;
  
  	/**
  	 * Decrement update counts throughout the various menus.
  	 *
  	 * @since 3.9.0
  	 *
  	 * @param {string} upgradeType
  	 */
  	wp.envato.decrementCount = function( upgradeType ) {
  		var count,
  			pluginCount,
  			$adminBarUpdateCount = $( '#wp-admin-bar-updates .ab-label' ),
  			$dashboardNavMenuUpdateCount = $( 'a[href="update-core.php"] .update-plugins' ),
  			$pluginsMenuItem = $( '#menu-plugins' );
  
  		count = $adminBarUpdateCount.text();
  		count = parseInt( count, 10 ) - 1;
  		if ( count < 0 || isNaN( count ) ) {
  			return;
  		}
  		$( '#wp-admin-bar-updates .ab-item' ).removeAttr( 'title' );
  		$adminBarUpdateCount.text( count );
  
  		$dashboardNavMenuUpdateCount.each( function( index, elem ) {
  			elem.className = elem.className.replace( /count-\d+/, 'count-' + count );
  		} );
  		$dashboardNavMenuUpdateCount.removeAttr( 'title' );
  		$dashboardNavMenuUpdateCount.find( '.update-count' ).text( count );
  
  		if ( 'plugin' === upgradeType ) {
  			pluginCount = $pluginsMenuItem.find( '.plugin-count' ).eq( 0 ).text();
  			pluginCount = parseInt( pluginCount, 10 ) - 1;
  			if ( pluginCount < 0 || isNaN( pluginCount ) ) {
  				return;
  			}
  			$pluginsMenuItem.find( '.plugin-count' ).text( pluginCount );
  			$pluginsMenuItem.find( '.update-plugins' ).each( function( index, elem ) {
  				elem.className = elem.className.replace( /count-\d+/, 'count-' + pluginCount );
  			} );
  
  			if ( pluginCount > 0 ) {
  				$( '.subsubsub .upgrade .count' ).text( '(' + pluginCount + ')' );
  			} else {
  				$( '.subsubsub .upgrade' ).remove();
  			}
  		}
  	};
  
  	/**
  	 * Send an Ajax request to the server to update a plugin.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @param {string} plugin
  	 * @param {string} slug
  	 */
  	wp.envato.updatePlugin = function( plugin, slug ) {
  		var data,
  			$message = $( '.envato-card-' + slug ).find( '.update-now' ),
  			name = $message.data( 'name' );
  
  		$message.attr( 'aria-label', wp.envato.l10n.updatingLabel.replace( '%s', name ) );
  
  		$message.addClass( 'updating-message' );
  		if ( $message.html() !== wp.envato.l10n.updating ) {
  			$message.data( 'originaltext', $message.html() );
  		}
  
  		$message.text( wp.envato.l10n.updating );
  		wp.a11y.speak( wp.envato.l10n.updatingMsg );
  
  		if ( wp.envato.updateLock ) {
  			wp.envato.updateQueue.push( {
  				type: 'update-plugin',
  				data: {
  					plugin: plugin,
  					slug: slug
  				}
  			} );
  			return;
  		}
  
  		wp.envato.updateLock = true;
  
  		data = {
  			_ajax_nonce:     wp.envato.ajaxNonce,
  			plugin:          plugin,
  			slug:            slug,
  			username:        wp.envato.filesystemCredentials.ftp.username,
  			password:        wp.envato.filesystemCredentials.ftp.password,
  			hostname:        wp.envato.filesystemCredentials.ftp.hostname,
  			connection_type: wp.envato.filesystemCredentials.ftp.connectionType,
  			public_key:      wp.envato.filesystemCredentials.ssh.publicKey,
  			private_key:     wp.envato.filesystemCredentials.ssh.privateKey
  		};
  		console.log('post-plugin');
  		wp.ajax.post( 'update-plugin', data )
  			.done( wp.envato.updateSuccess )
  			.fail( wp.envato.updateError );
  	};
  
  	/**
  	 * Send an Ajax request to the server to update a theme.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @param {string} plugin
  	 * @param {string} slug
  	 */
  	wp.envato.updateTheme = function( slug ) {
  		var data,
  			$message = $( '.envato-card-' + slug ).find( '.update-now' ),
  			name = $message.data( 'name' );
  
  		$message.attr( 'aria-label', wp.envato.l10n.updatingLabel.replace( '%s', name ) );
  
  		$message.addClass( 'updating-message' );
  		if ( $message.html() !== wp.envato.l10n.updating ) {
  			$message.data( 'originaltext', $message.html() );
  		}
  
  		$message.text( wp.envato.l10n.updating );
  		wp.a11y.speak( wp.envato.l10n.updatingMsg );
  
  		if ( wp.envato.updateLock ) {
  			wp.envato.updateQueue.push( {
  				type: 'upgrade-theme',
  				data: {
  					theme: slug
  				}
  			} );
  			return;
  		}
  
  		wp.envato.updateLock = true;
  
  		data = {
  			_ajax_nonce:     wp.envato.ajaxNonce,
  			theme:           slug,
  			username:        wp.envato.filesystemCredentials.ftp.username,
  			password:        wp.envato.filesystemCredentials.ftp.password,
  			hostname:        wp.envato.filesystemCredentials.ftp.hostname,
  			connection_type: wp.envato.filesystemCredentials.ftp.connectionType,
  			public_key:      wp.envato.filesystemCredentials.ssh.publicKey,
  			private_key:     wp.envato.filesystemCredentials.ssh.privateKey
  		};
  		console.log('post-theme');
  		wp.ajax.post( 'upgrade-theme', data )
  			.done( wp.envato.updateSuccess )
  			.fail( wp.envato.updateError );
  	};
  
  	/**
  	 * On a successful plugin update, update the UI with the result.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @param {object} response
  	 */
  	wp.envato.updateSuccess = function( response ) {
  		console.log(response);
  
  		var $card, $updateColumn, $updateMessage, $updateVersion, name, version, versionText;
  
  		$card = $( '.envato-card-' + response.slug );
  		$updateColumn = $card.find( '.column-update' );
  		$updateMessage = $card.find( '.update-now' );
  		$updateVersion = $card.find( '.version' );
  
  		name = $updateMessage.data( 'name' );
  		version = $updateMessage.data( 'version' );
  		versionText = $updateVersion.attr( 'aria-label' ).replace( '%s', version );
  
  		$updateMessage.addClass( 'disabled' );
  		$updateMessage.attr( 'aria-label', wp.envato.l10n.updatedLabel.replace( '%s', name ) );
  		$updateVersion.text( versionText );
  
  		$updateMessage.removeClass( 'updating-message' ).addClass( 'updated-message' );
  		$updateMessage.text( wp.envato.l10n.updated );
  		wp.a11y.speak( wp.envato.l10n.updatedMsg );
  		$updateColumn.addClass( 'update-complete' ).delay( 1000 ).fadeOut();
  
  		wp.envato.decrementCount( 'plugin' );
  
  		wp.envato.updateDoneSuccessfully = true;
  
  		/*
  		 * The lock can be released since the update was successful,
  		 * and any other updates can commence.
  		 */
  		wp.envato.updateLock = false;
  
  		$( document ).trigger( 'envato-update-success', response );
  
  		wp.envato.queueChecker();
  	};
  
  	/**
  	 * On a plugin update error, update the UI appropriately.
  	 *
  	 * @since 1.0.0
  	 *
  	 * @param {object} response
  	 */
  	wp.envato.updateError = function( response ) {
  		console.log(response);
  		
  		var $message, name;
  		wp.envato.updateDoneSuccessfully = false;
  		if ( response.errorCode && 'unable_to_connect_to_filesystem' === response.errorCode && wp.envato.shouldRequestFilesystemCredentials ) {
  			wp.envato.credentialError( response, 'update-plugin' );
  			return;
  		}
  		$message = $( '.envato-card-' + response.slug ).find( '.update-now' );
  
  		name = $message.data( 'name' );
  		$message.attr( 'aria-label', wp.envato.l10n.updateFailedLabel.replace( '%s', name ) );
  
  		$message.removeClass( 'updating-message' );
  		$message.html( wp.envato.l10n.updateFailed.replace( '%s', response.error ) );
  		wp.a11y.speak( wp.envato.l10n.updateFailed );
  
  		/*
  		 * The lock can be released since this failure was
  		 * after the credentials form.
  		 */
  		wp.envato.updateLock = false;
  
  		$( document ).trigger( 'envato-update-error', response );
  
  		wp.envato.queueChecker();
  	};
  
  	/**
  	 * Show an error message in the request for credentials form.
  	 *
  	 * @param {string} message
  	 * @since 1.0.0
  	 */
  	wp.envato.showErrorInCredentialsForm = function( message ) {
  		var $modal = $( '.notification-dialog' );
  
  		// Remove any existing error.
  		$modal.find( '.error' ).remove();
  
  		$modal.find( 'h3' ).after( '<div class="error">' + message + '</div>' );
  	};
  
  	/**
  	 * Events that need to happen when there is a credential error
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.credentialError = function( response, type ) {
  		wp.envato.updateQueue.push( {
  			'type': type,
  			'data': {
  
  				// Not cool that we're depending on response for this data.
  				// This would feel more whole in a view all tied together.
  				plugin: response.plugin,
  				slug: response.slug
  			}
  		} );
  		wp.envato.showErrorInCredentialsForm( response.error );
  		wp.envato.requestFilesystemCredentials();
  	};
  
  	/**
  	 * If an update job has been placed in the queue, queueChecker pulls it out and runs it.
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.queueChecker = function() {
  		var job;
  
  		if ( wp.envato.updateLock || wp.envato.updateQueue.length <= 0 ) {
  			return;
  		}
  
  		job = wp.envato.updateQueue.shift();
  
  		wp.envato.updatePlugin( job.data.plugin, job.data.slug );
  	};
  
  	/**
  	 * Request the users filesystem credentials if we don't have them already.
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.requestFilesystemCredentials = function( event ) {
  		if ( false === wp.envato.updateDoneSuccessfully ) {
  			wp.envato.$elToReturnFocusToFromCredentialsModal = $( event.target );
  
  			wp.envato.updateLock = true;
  
  			wp.envato.requestForCredentialsModalOpen();
  		}
  	};
  
  	/**
  	 * Keydown handler for the request for credentials modal.
  	 *
  	 * Close the modal when the escape key is pressed.
  	 * Constrain keyboard navigation to inside the modal.
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.keydown = function( event ) {
  		if ( 27 === event.keyCode ) {
  			wp.envato.requestForCredentialsModalCancel();
  		} else if ( 9 === event.keyCode ) {
  
  			// #upgrade button must always be the last focusable element in the dialog.
  			if ( 'upgrade' === event.target.id && ! event.shiftKey ) {
  				$( '#hostname' ).focus();
  				event.preventDefault();
  			} else if ( 'hostname' === event.target.id && event.shiftKey ) {
  				$( '#upgrade' ).focus();
  				event.preventDefault();
  			}
  		}
  	};
  
  	/**
  	 * Open the request for credentials modal.
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.requestForCredentialsModalOpen = function() {
  		var $modal = $( '#request-filesystem-credentials-dialog' );
  		$( 'body' ).addClass( 'modal-open' );
  		$modal.show();
  
  		$modal.find( 'input:enabled:first' ).focus();
  		$modal.keydown( wp.envato.keydown );
  	};
  
  	/**
  	 * Close the request for credentials modal.
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.requestForCredentialsModalClose = function() {
  		$( '#request-filesystem-credentials-dialog' ).hide();
  		$( 'body' ).removeClass( 'modal-open' );
  		wp.envato.$elToReturnFocusToFromCredentialsModal.focus();
  	};
  
  	/**
  	 * The steps that need to happen when the modal is canceled out
  	 *
  	 * @since 1.0.0
  	 */
  	wp.envato.requestForCredentialsModalCancel = function() {
  		var slug, $message;
  
  		// No updateLock and no updateQueue means we already have cleared things up
  		if ( false === wp.envato.updateLock && 0 === wp.envato.updateQueue.length ) {
  			return;
  		}
  
  		slug = wp.envato.updateQueue[0].data.slug,
  
  		// Remove the lock, and clear the queue
  		wp.envato.updateLock = false;
  		wp.envato.updateQueue = [];
  
  		wp.envato.requestForCredentialsModalClose();
  		$message = $( '.envato-card-' + slug ).find( '.update-now' );
  
  		$message.removeClass( 'updating-message' );
  		$message.html( $message.data( 'originaltext' ) );
  		wp.a11y.speak( wp.envato.l10n.updateCancel );
  	};
  	/**
  	 * Potentially add an AYS to a user attempting to leave the page
  	 *
  	 * If an update is on-going and a user attempts to leave the page,
  	 * open an "Are you sure?" alert.
  	 *
  	 * @since 1.0.0
  	 */
  
  	wp.envato.beforeunload = function() {
  		if ( wp.envato.updateLock ) {
  			return wp.envato.l10n.beforeunload;
  		}
  	};
  
  	$( document ).ready( function() {
  		/*
  		 * Check whether a user needs to submit filesystem credentials based on whether
  		 * the form was output on the page server-side.
  		 *
  		 * @see {wp_print_request_filesystem_credentials_modal() in PHP}
  		 */
  		wp.envato.shouldRequestFilesystemCredentials = ( $( '#request-filesystem-credentials-dialog' ).length <= 0 ) ? false : true;
  
  		// File system credentials form submit noop-er / handler.
  		$( '#request-filesystem-credentials-dialog form' ).on( 'submit', function() {
  
  			// Persist the credentials input by the user for the duration of the page load.
  			wp.envato.filesystemCredentials.ftp.hostname = $( '#hostname' ).val();
  			wp.envato.filesystemCredentials.ftp.username = $( '#username' ).val();
  			wp.envato.filesystemCredentials.ftp.password = $( '#password' ).val();
  			wp.envato.filesystemCredentials.ftp.connectionType = $( 'input[name="connection_type"]:checked' ).val();
  			wp.envato.filesystemCredentials.ssh.publicKey = $( '#public_key' ).val();
  			wp.envato.filesystemCredentials.ssh.privateKey = $( '#private_key' ).val();
  
  			wp.envato.requestForCredentialsModalClose();
  
  			// Unlock and invoke the queue.
  			wp.envato.updateLock = false;
  			wp.envato.queueChecker();
  
  			return false;
  		});
  
  		// Close the request credentials modal when
  		$( '#request-filesystem-credentials-dialog [data-js-action="close"], .notification-dialog-background' ).on( 'click', function() {
  			wp.envato.requestForCredentialsModalCancel();
  		});
  
  		// Hide SSH fields when not selected
  		$( '#request-filesystem-credentials-dialog input[name="connection_type"]' ).on( 'change', function() {
  			$( this ).parents( 'form' ).find( '#private_key, #public_key' ).parents( 'label' ).toggle( ( 'ssh' === $( this ).val() ) );
  		}).change();
  
  		// Click handler for plugin updates.
  		$( '.envato-card.plugin' ).on( 'click', '.update-now', function( e ) {
  			var $button = $( e.target );
  			e.preventDefault();
  
  			if ( wp.envato.shouldRequestFilesystemCredentials && ! wp.envato.updateLock ) {
  				wp.envato.requestFilesystemCredentials( e );
  			}
  
  			wp.envato.updatePlugin( $button.data( 'plugin' ), $button.data( 'slug' ) );
  		} );
  
  		// Click handler for theme updates.
  		$( '.envato-card.theme' ).on( 'click', '.update-now', function( e ) {
  			var $button = $( e.target );
  			e.preventDefault();
  
  			if ( wp.envato.shouldRequestFilesystemCredentials && ! wp.envato.updateLock ) {
  				wp.envato.requestFilesystemCredentials( e );
  			}
  
  			wp.envato.updateTheme( $button.data( 'slug' ) );
  		} );
  
  		// @todo
  		$( '#plugin_update_from_iframe' ).on( 'click', function( e ) {
  			var target,	data;
  
  			target = window.parent === window ? null : window.parent,
  			$.support.postMessage = !! window.postMessage;
  
  			if ( false === $.support.postMessage || null === target || window.parent.location.pathname.indexOf( 'update-core.php' ) !== -1 ) {
  				return;
  			}
  
  			e.preventDefault();
  
  			data = {
  				'action': 'updatePlugin',
  				'slug': $( this ).data( 'slug' )
  			};
  
  			target.postMessage( JSON.stringify( data ), window.location.origin );
  		});
  	} );
  
  	$( window ).on( 'message', function( e ) {
  		var event = e.originalEvent,
  			message,
  			loc = document.location,
  			expectedOrigin = loc.protocol + '//' + loc.hostname;
  
  		if ( event.origin !== expectedOrigin ) {
  			return;
  		}
  
  		message = $.parseJSON( event.data );
  
  		if ( 'undefined' === typeof message.action ) {
  			return;
  		}
  
  		switch ( message.action ){
  			case 'decrementUpdateCount' :
  				wp.envato.decrementCount( message.upgradeType );
  				break;
  			case 'updatePlugin' :
  				tb_remove();
  				$( '.envato-card-' + message.slug ).find( 'h4 a' ).focus();
  				$( '.envato-card-' + message.slug ).find( '[data-slug="' + message.slug + '"]' ).trigger( 'click' );
  				break;
  		}
  	} );
  
  	$( window ).on( 'beforeunload', wp.envato.beforeunload );
  
  })( jQuery, window.wp, window.ajaxurl );
  