You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.1 KiB
127 lines
3.1 KiB
/** |
|
* WordPress inline HTML embed |
|
* |
|
* @since 4.4.0 |
|
* |
|
* This file cannot have ampersands in it. This is to ensure |
|
* it can be embedded in older versions of WordPress. |
|
* See https://core.trac.wordpress.org/changeset/35708. |
|
*/ |
|
(function ( window, document ) { |
|
'use strict'; |
|
|
|
var supportedBrowser = false, |
|
loaded = false; |
|
|
|
if ( document.querySelector ) { |
|
if ( window.addEventListener ) { |
|
supportedBrowser = true; |
|
} |
|
} |
|
|
|
/** @namespace wp */ |
|
window.wp = window.wp || {}; |
|
|
|
if ( !! window.wp.receiveEmbedMessage ) { |
|
return; |
|
} |
|
|
|
window.wp.receiveEmbedMessage = function( e ) { |
|
var data = e.data; |
|
|
|
if ( ! data ) { |
|
return; |
|
} |
|
|
|
if ( ! ( data.secret || data.message || data.value ) ) { |
|
return; |
|
} |
|
|
|
if ( /[^a-zA-Z0-9]/.test( data.secret ) ) { |
|
return; |
|
} |
|
|
|
var iframes = document.querySelectorAll( 'iframe[data-secret="' + data.secret + '"]' ), |
|
blockquotes = document.querySelectorAll( 'blockquote[data-secret="' + data.secret + '"]' ), |
|
i, source, height, sourceURL, targetURL; |
|
|
|
for ( i = 0; i < blockquotes.length; i++ ) { |
|
blockquotes[ i ].style.display = 'none'; |
|
} |
|
|
|
for ( i = 0; i < iframes.length; i++ ) { |
|
source = iframes[ i ]; |
|
|
|
if ( e.source !== source.contentWindow ) { |
|
continue; |
|
} |
|
|
|
source.removeAttribute( 'style' ); |
|
|
|
/* Resize the iframe on request. */ |
|
if ( 'height' === data.message ) { |
|
height = parseInt( data.value, 10 ); |
|
if ( height > 1000 ) { |
|
height = 1000; |
|
} else if ( ~~height < 200 ) { |
|
height = 200; |
|
} |
|
|
|
source.height = height; |
|
} |
|
|
|
/* Link to a specific URL on request. */ |
|
if ( 'link' === data.message ) { |
|
sourceURL = document.createElement( 'a' ); |
|
targetURL = document.createElement( 'a' ); |
|
|
|
sourceURL.href = source.getAttribute( 'src' ); |
|
targetURL.href = data.value; |
|
|
|
/* Only continue if link hostname matches iframe's hostname. */ |
|
if ( targetURL.host === sourceURL.host ) { |
|
if ( document.activeElement === source ) { |
|
window.top.location.href = data.value; |
|
} |
|
} |
|
} |
|
} |
|
}; |
|
|
|
function onLoad() { |
|
if ( loaded ) { |
|
return; |
|
} |
|
|
|
loaded = true; |
|
|
|
var isIE10 = -1 !== navigator.appVersion.indexOf( 'MSIE 10' ), |
|
isIE11 = !!navigator.userAgent.match( /Trident.*rv:11\./ ), |
|
iframes = document.querySelectorAll( 'iframe.wp-embedded-content' ), |
|
iframeClone, i, source, secret; |
|
|
|
for ( i = 0; i < iframes.length; i++ ) { |
|
source = iframes[ i ]; |
|
|
|
if ( ! source.getAttribute( 'data-secret' ) ) { |
|
/* Add secret to iframe */ |
|
secret = Math.random().toString( 36 ).substr( 2, 10 ); |
|
source.src += '#?secret=' + secret; |
|
source.setAttribute( 'data-secret', secret ); |
|
} |
|
|
|
/* Remove security attribute from iframes in IE10 and IE11. */ |
|
if ( ( isIE10 || isIE11 ) ) { |
|
iframeClone = source.cloneNode( true ); |
|
iframeClone.removeAttribute( 'security' ); |
|
source.parentNode.replaceChild( iframeClone, source ); |
|
} |
|
} |
|
} |
|
|
|
if ( supportedBrowser ) { |
|
window.addEventListener( 'message', window.wp.receiveEmbedMessage, false ); |
|
document.addEventListener( 'DOMContentLoaded', onLoad, false ); |
|
window.addEventListener( 'load', onLoad, false ); |
|
} |
|
})( window, document );
|
|
|