119 lines
3.1 KiB
JavaScript
119 lines
3.1 KiB
JavaScript
|
/**
|
||
|
|
* WordPress inline HTML embed
|
||
|
|
*
|
||
|
|
* @since 4.4.0
|
||
|
|
* @output wp-includes/js/wp-embed.js
|
||
|
|
*
|
||
|
|
* Single line comments should not be used since they will break
|
||
|
|
* the script when inlined in get_post_embed_html(), specifically
|
||
|
|
* when the comments are not stripped out due to SCRIPT_DEBUG
|
||
|
|
* being turned on.
|
||
|
|
*/
|
||
|
|
(function ( window, document ) {
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
/* Abort for ancient browsers. */
|
||
|
|
if ( ! document.querySelector || ! window.addEventListener || typeof URL === 'undefined' ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @namespace wp */
|
||
|
|
window.wp = window.wp || {};
|
||
|
|
|
||
|
|
/* Abort if script was already executed. */
|
||
|
|
if ( !! window.wp.receiveEmbedMessage ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Receive embed message.
|
||
|
|
*
|
||
|
|
* @param {MessageEvent} e
|
||
|
|
*/
|
||
|
|
window.wp.receiveEmbedMessage = function( e ) {
|
||
|
|
var data = e.data;
|
||
|
|
|
||
|
|
/* Verify shape of message. */
|
||
|
|
if (
|
||
|
|
! ( data || data.secret || data.message || data.value ) ||
|
||
|
|
/[^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 + '"]' ),
|
||
|
|
allowedProtocols = new RegExp( '^https?:$', 'i' ),
|
||
|
|
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' );
|
||
|
|
|
||
|
|
if ( 'height' === data.message ) {
|
||
|
|
/* Resize the iframe on request. */
|
||
|
|
height = parseInt( data.value, 10 );
|
||
|
|
if ( height > 1000 ) {
|
||
|
|
height = 1000;
|
||
|
|
} else if ( ~~height < 200 ) {
|
||
|
|
height = 200;
|
||
|
|
}
|
||
|
|
|
||
|
|
source.height = height;
|
||
|
|
} else if ( 'link' === data.message ) {
|
||
|
|
/* Link to a specific URL on request. */
|
||
|
|
sourceURL = new URL( source.getAttribute( 'src' ) );
|
||
|
|
targetURL = new URL( data.value );
|
||
|
|
|
||
|
|
if (
|
||
|
|
allowedProtocols.test( targetURL.protocol ) &&
|
||
|
|
targetURL.host === sourceURL.host &&
|
||
|
|
document.activeElement === source
|
||
|
|
) {
|
||
|
|
window.top.location.href = data.value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function onLoad() {
|
||
|
|
var iframes = document.querySelectorAll( 'iframe.wp-embedded-content' ),
|
||
|
|
i, source, secret;
|
||
|
|
|
||
|
|
for ( i = 0; i < iframes.length; i++ ) {
|
||
|
|
/** @var {IframeElement} */
|
||
|
|
source = iframes[ i ];
|
||
|
|
|
||
|
|
secret = source.getAttribute( 'data-secret' );
|
||
|
|
if ( ! secret ) {
|
||
|
|
/* Add secret to iframe */
|
||
|
|
secret = Math.random().toString( 36 ).substring( 2, 12 );
|
||
|
|
source.src += '#?secret=' + secret;
|
||
|
|
source.setAttribute( 'data-secret', secret );
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Let post embed window know that the parent is ready for receiving the height message, in case the iframe
|
||
|
|
* loaded before wp-embed.js was loaded. When the ready message is received by the post embed window, the
|
||
|
|
* window will then (re-)send the height message right away.
|
||
|
|
*/
|
||
|
|
source.contentWindow.postMessage( {
|
||
|
|
message: 'ready',
|
||
|
|
secret: secret
|
||
|
|
}, '*' );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
window.addEventListener( 'message', window.wp.receiveEmbedMessage, false );
|
||
|
|
document.addEventListener( 'DOMContentLoaded', onLoad, false );
|
||
|
|
})( window, document );
|