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/**

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* Interim login dialog.

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* @output wp-includes/js/wp-auth-check.js

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( function( $ ) {

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var wrap,

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tempHidden,

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tempHiddenTimeout;

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/**

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* Shows the authentication form popup.

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* @since 3.6.0

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* @private

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function show() {

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var parent = $( '#wp-auth-check' ),

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form = $( '#wp-auth-check-form' ),

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noframe = wrap.find( '.wp-auth-fallback-expired' ),

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frame, loaded = false;

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if ( form.length ) {

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// Add unload confirmation to counter (frame-busting) JS redirects.

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$( window ).on( 'beforeunload.wp-auth-check', function( event ) {

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event.originalEvent.returnValue = window.wp.i18n.__( 'Your session has expired. You can log in again from this page or go to the login page.' );

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});

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frame = $( '<iframe id="wp-auth-check-frame" frameborder="0">' ).attr( 'title', noframe.text() );

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frame.on( 'load', function() {

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var height, body;

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loaded = true;

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// Remove the spinner to avoid unnecessary CPU/GPU usage.

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form.removeClass( 'loading' );

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try {

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body = $( this ).contents().find( 'body' );

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height = body.height();

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} catch( er ) {

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wrap.addClass( 'fallback' );

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parent.css( 'max-height', '' );

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form.remove();

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noframe.focus();

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return;

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}

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if ( height ) {

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if ( body && body.hasClass( 'interim-login-success' ) ) {

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hide();

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} else {

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parent.css( 'max-height', height + 40 + 'px' );

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}

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} else if ( ! body || ! body.length ) {

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// Catch "silent" iframe origin exceptions in WebKit

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// after another page is loaded in the iframe.

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wrap.addClass( 'fallback' );

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parent.css( 'max-height', '' );

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form.remove();

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noframe.focus();

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}

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}).attr( 'src', form.data( 'src' ) );

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form.append( frame );

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}

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$( 'body' ).addClass( 'modal-open' );

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wrap.removeClass( 'hidden' );

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if ( frame ) {

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frame.focus();

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* WebKit doesn't throw an error if the iframe fails to load

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* because of "X-Frame-Options: DENY" header.

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* Wait for 10 seconds and switch to the fallback text.

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setTimeout( function() {

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if ( ! loaded ) {

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wrap.addClass( 'fallback' );

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form.remove();

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noframe.focus();

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}

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}, 10000 );

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} else {

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noframe.focus();

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}

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}

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/**

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* Hides the authentication form popup.

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* @since 3.6.0

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* @private

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function hide() {

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var adminpage = window.adminpage,

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wp = window.wp;

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$( window ).off( 'beforeunload.wp-auth-check' );

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// When on the Edit Post screen, speed up heartbeat

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// after the user logs in to quickly refresh nonces.

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if ( ( adminpage === 'post-php' || adminpage === 'post-new-php' ) && wp && wp.heartbeat ) {

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wp.heartbeat.connectNow();

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}

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wrap.fadeOut( 200, function() {

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wrap.addClass( 'hidden' ).css( 'display', '' );

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$( '#wp-auth-check-frame' ).remove();

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$( 'body' ).removeClass( 'modal-open' );

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});

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}

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/**

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* Set or reset the tempHidden variable used to pause showing of the modal

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* after a user closes it without logging in.

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* @since 5.5.0

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* @private

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function setShowTimeout() {

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tempHidden = true;

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window.clearTimeout( tempHiddenTimeout );

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tempHiddenTimeout = window.setTimeout(

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function() {

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tempHidden = false;

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300000 // 5 min.

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);

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}

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/**

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* Binds to the Heartbeat Tick event.

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* - Shows the authentication form popup if user is not logged in.

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* - Hides the authentication form popup if it is already visible and user is

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* logged in.

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* @ignore

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* @since 3.6.0

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* @param {Object} e The heartbeat-tick event that has been triggered.

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* @param {Object} data Response data.

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$( function() {

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/**

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* Hides the authentication form popup when the close icon is clicked.

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* @ignore

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* @since 3.6.0

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wrap = $( '#wp-auth-check-wrap' );

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wrap.find( '.wp-auth-check-close' ).on( 'click', function() {

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hide();

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setShowTimeout();

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});

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}).on( 'heartbeat-tick.wp-auth-check', function( e, data ) {

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if ( 'wp-auth-check' in data ) {

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if ( ! data['wp-auth-check'] && wrap.hasClass( 'hidden' ) && ! tempHidden ) {

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show();

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} else if ( data['wp-auth-check'] && ! wrap.hasClass( 'hidden' ) ) {

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hide();

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}

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}

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});

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}(jQuery));

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