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msd2/wordpress/wp-includes/js/wp-embed-template.js

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+/**
+ * @output wp-includes/js/wp-embed-template.js
+ */
+(function ( window, document ) {
+	'use strict';
+
+	var supportedBrowser = ( document.querySelector && window.addEventListener ),
+		loaded = false,
+		secret,
+		secretTimeout,
+		resizing;
+
+	function sendEmbedMessage( message, value ) {
+		window.parent.postMessage( {
+			message: message,
+			value: value,
+			secret: secret
+		}, '*' );
+	}
+
+	function onLoad() {
+		if ( loaded ) {
+			return;
+		}
+		loaded = true;
+
+		var share_dialog = document.querySelector( '.wp-embed-share-dialog' ),
+			share_dialog_open = document.querySelector( '.wp-embed-share-dialog-open' ),
+			share_dialog_close = document.querySelector( '.wp-embed-share-dialog-close' ),
+			share_input = document.querySelectorAll( '.wp-embed-share-input' ),
+			share_dialog_tabs = document.querySelectorAll( '.wp-embed-share-tab-button button' ),
+			featured_image = document.querySelector( '.wp-embed-featured-image img' ),
+			i;
+
+		if ( share_input ) {
+			for ( i = 0; i < share_input.length; i++ ) {
+				share_input[ i ].addEventListener( 'click', function ( e ) {
+					e.target.select();
+				} );
+			}
+		}
+
+		function openSharingDialog() {
+			share_dialog.className = share_dialog.className.replace( 'hidden', '' );
+			// Initial focus should go on the currently selected tab in the dialog.
+			document.querySelector( '.wp-embed-share-tab-button [aria-selected="true"]' ).focus();
+		}
+
+		function closeSharingDialog() {
+			share_dialog.className += ' hidden';
+			document.querySelector( '.wp-embed-share-dialog-open' ).focus();
+		}
+
+		if ( share_dialog_open ) {
+			share_dialog_open.addEventListener( 'click', function () {
+				openSharingDialog();
+			} );
+		}
+
+		if ( share_dialog_close ) {
+			share_dialog_close.addEventListener( 'click', function () {
+				closeSharingDialog();
+			} );
+		}
+
+		function shareClickHandler( e ) {
+			var currentTab = document.querySelector( '.wp-embed-share-tab-button [aria-selected="true"]' );
+			currentTab.setAttribute( 'aria-selected', 'false' );
+			document.querySelector( '#' + currentTab.getAttribute( 'aria-controls' ) ).setAttribute( 'aria-hidden', 'true' );
+
+			e.target.setAttribute( 'aria-selected', 'true' );
+			document.querySelector( '#' + e.target.getAttribute( 'aria-controls' ) ).setAttribute( 'aria-hidden', 'false' );
+		}
+
+		function shareKeyHandler( e ) {
+			var target = e.target,
+				previousSibling = target.parentElement.previousElementSibling,
+				nextSibling = target.parentElement.nextElementSibling,
+				newTab, newTabChild;
+
+			if ( 37 === e.keyCode ) {
+				newTab = previousSibling;
+			} else if ( 39 === e.keyCode ) {
+				newTab = nextSibling;
+			} else {
+				return false;
+			}
+
+			if ( 'rtl' === document.documentElement.getAttribute( 'dir' ) ) {
+				newTab = ( newTab === previousSibling ) ? nextSibling : previousSibling;
+			}
+
+			if ( newTab ) {
+				newTabChild = newTab.firstElementChild;
+
+				target.setAttribute( 'tabindex', '-1' );
+				target.setAttribute( 'aria-selected', false );
+				document.querySelector( '#' + target.getAttribute( 'aria-controls' ) ).setAttribute( 'aria-hidden', 'true' );
+
+				newTabChild.setAttribute( 'tabindex', '0' );
+				newTabChild.setAttribute( 'aria-selected', 'true' );
+				newTabChild.focus();
+				document.querySelector( '#' + newTabChild.getAttribute( 'aria-controls' ) ).setAttribute( 'aria-hidden', 'false' );
+			}
+		}
+
+		if ( share_dialog_tabs ) {
+			for ( i = 0; i < share_dialog_tabs.length; i++ ) {
+				share_dialog_tabs[ i ].addEventListener( 'click', shareClickHandler );
+
+				share_dialog_tabs[ i ].addEventListener( 'keydown', shareKeyHandler );
+			}
+		}
+
+		document.addEventListener( 'keydown', function ( e ) {
+			if ( 27 === e.keyCode && -1 === share_dialog.className.indexOf( 'hidden' ) ) {
+				closeSharingDialog();
+			} else if ( 9 === e.keyCode ) {
+				constrainTabbing( e );
+			}
+		}, false );
+
+		function constrainTabbing( e ) {
+			// Need to re-get the selected tab each time.
+			var firstFocusable = document.querySelector( '.wp-embed-share-tab-button [aria-selected="true"]' );
+
+			if ( share_dialog_close === e.target && ! e.shiftKey ) {
+				firstFocusable.focus();
+				e.preventDefault();
+			} else if ( firstFocusable === e.target && e.shiftKey ) {
+				share_dialog_close.focus();
+				e.preventDefault();
+			}
+		}
+
+		if ( window.self === window.top ) {
+			return;
+		}
+
+		/**
+		 * Send this document's height to the parent (embedding) site.
+		 */
+		sendEmbedMessage( 'height', Math.ceil( document.body.getBoundingClientRect().height ) );
+
+		// Send the document's height again after the featured image has been loaded.
+		if ( featured_image ) {
+			featured_image.addEventListener( 'load', function() {
+				sendEmbedMessage( 'height', Math.ceil( document.body.getBoundingClientRect().height ) );
+			} );
+		}
+
+		/**
+		 * Detect clicks to external (_top) links.
+		 */
+		function linkClickHandler( e ) {
+			var target = e.target,
+				href;
+			if ( target.hasAttribute( 'href' ) ) {
+				href = target.getAttribute( 'href' );
+			} else {
+				href = target.parentElement.getAttribute( 'href' );
+			}
+
+			/**
+			 * Send link target to the parent (embedding) site.
+			 */
+			if ( href ) {
+				sendEmbedMessage( 'link', href );
+				e.preventDefault();
+			}
+		}
+
+		document.addEventListener( 'click', linkClickHandler );
+	}
+
+	/**
+	 * Iframe resize handler.
+	 */
+	function onResize() {
+		if ( window.self === window.top ) {
+			return;
+		}
+
+		clearTimeout( resizing );
+
+		resizing = setTimeout( function () {
+			sendEmbedMessage( 'height', Math.ceil( document.body.getBoundingClientRect().height ) );
+		}, 100 );
+	}
+
+	/**
+	 * Re-get the secret when it was added later on.
+	 */
+	function getSecret() {
+		if ( window.self === window.top || !!secret ) {
+			return;
+		}
+
+		secret = window.location.hash.replace( /.*secret=([\d\w]{10}).*/, '$1' );
+
+		clearTimeout( secretTimeout );
+
+		secretTimeout = setTimeout( function () {
+			getSecret();
+		}, 100 );
+	}
+
+	if ( supportedBrowser ) {
+		getSecret();
+		document.documentElement.className = document.documentElement.className.replace( /\bno-js\b/, '' ) + ' js';
+		document.addEventListener( 'DOMContentLoaded', onLoad, false );
+		window.addEventListener( 'load', onLoad, false );
+		window.addEventListener( 'resize', onResize, false );
+	}
+})( window, document );