Copybara bot | be50d49 | 2023-11-30 00:16:42 +0100 | [diff] [blame] | 1 | define( [ |
| 2 | "../core", |
| 3 | "../var/document", |
| 4 | "../var/isFunction" |
| 5 | ], function( jQuery, document, isFunction ) { |
| 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | var readyCallbacks = [], |
| 10 | whenReady = function( fn ) { |
| 11 | readyCallbacks.push( fn ); |
| 12 | }, |
| 13 | executeReady = function( fn ) { |
| 14 | |
| 15 | // Prevent errors from freezing future callback execution (gh-1823) |
| 16 | // Not backwards-compatible as this does not execute sync |
| 17 | window.setTimeout( function() { |
| 18 | fn.call( document, jQuery ); |
| 19 | } ); |
| 20 | }; |
| 21 | |
| 22 | jQuery.fn.ready = function( fn ) { |
| 23 | whenReady( fn ); |
| 24 | return this; |
| 25 | }; |
| 26 | |
| 27 | jQuery.extend( { |
| 28 | |
| 29 | // Is the DOM ready to be used? Set to true once it occurs. |
| 30 | isReady: false, |
| 31 | |
| 32 | // A counter to track how many items to wait for before |
| 33 | // the ready event fires. See #6781 |
| 34 | readyWait: 1, |
| 35 | |
| 36 | ready: function( wait ) { |
| 37 | |
| 38 | // Abort if there are pending holds or we're already ready |
| 39 | if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { |
| 40 | return; |
| 41 | } |
| 42 | |
| 43 | // Remember that the DOM is ready |
| 44 | jQuery.isReady = true; |
| 45 | |
| 46 | // If a normal DOM Ready event fired, decrement, and wait if need be |
| 47 | if ( wait !== true && --jQuery.readyWait > 0 ) { |
| 48 | return; |
| 49 | } |
| 50 | |
| 51 | whenReady = function( fn ) { |
| 52 | readyCallbacks.push( fn ); |
| 53 | |
| 54 | while ( readyCallbacks.length ) { |
| 55 | fn = readyCallbacks.shift(); |
| 56 | if ( isFunction( fn ) ) { |
| 57 | executeReady( fn ); |
| 58 | } |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | whenReady(); |
| 63 | } |
| 64 | } ); |
| 65 | |
| 66 | // Make jQuery.ready Promise consumable (gh-1778) |
| 67 | jQuery.ready.then = jQuery.fn.ready; |
| 68 | |
| 69 | /** |
| 70 | * The ready event handler and self cleanup method |
| 71 | */ |
| 72 | function completed() { |
| 73 | document.removeEventListener( "DOMContentLoaded", completed ); |
| 74 | window.removeEventListener( "load", completed ); |
| 75 | jQuery.ready(); |
| 76 | } |
| 77 | |
| 78 | // Catch cases where $(document).ready() is called |
| 79 | // after the browser event has already occurred. |
| 80 | // Support: IE9-10 only |
| 81 | // Older IE sometimes signals "interactive" too soon |
| 82 | if ( document.readyState === "complete" || |
| 83 | ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { |
| 84 | |
| 85 | // Handle it asynchronously to allow scripts the opportunity to delay ready |
| 86 | window.setTimeout( jQuery.ready ); |
| 87 | |
| 88 | } else { |
| 89 | |
| 90 | // Use the handy event callback |
| 91 | document.addEventListener( "DOMContentLoaded", completed ); |
| 92 | |
| 93 | // A fallback to window.onload, that will always work |
| 94 | window.addEventListener( "load", completed ); |
| 95 | } |
| 96 | |
| 97 | } ); |