From ebad701751689b773afe29d1e3c4532c7810d02a Mon Sep 17 00:00:00 2001
From: John Resig <jeresig@gmail.com>
Date: Sun, 6 Dec 2009 17:19:33 -0500
Subject: Split the queue code out from data.js into a dedicated queue.js file
 (also split tests accordingly).

---
 src/queue.js | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 src/queue.js

(limited to 'src/queue.js')

diff --git a/src/queue.js b/src/queue.js
new file mode 100644
index 000000000..e636ffb41
--- /dev/null
+++ b/src/queue.js
@@ -0,0 +1,78 @@
+jQuery.extend({
+	queue: function( elem, type, data ) {
+		if ( !elem ) { return; }
+
+		type = (type || "fx") + "queue";
+		var q = jQuery.data( elem, type );
+
+		// Speed up dequeue by getting out quickly if this is just a lookup
+		if ( !data ) { return q || []; }
+
+		if ( !q || jQuery.isArray(data) ) {
+			q = jQuery.data( elem, type, jQuery.makeArray(data) );
+		} else {
+			q.push( data );
+		}
+		return q;
+	},
+
+	dequeue: function( elem, type ){
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ), fn = queue.shift();
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if ( fn === "inprogress" ) { fn = queue.shift(); }
+
+		if ( fn ) {
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if ( type == "fx" ) { queue.unshift("inprogress"); }
+
+			fn.call(elem, function() { jQuery.dequeue(elem, type); });
+		}
+	}
+});
+
+jQuery.fn.extend({
+	queue: function(type, data){
+		if ( typeof type !== "string" ) {
+			data = type;
+			type = "fx";
+		}
+
+		if ( data === undefined ) {
+			return jQuery.queue( this[0], type );
+		}
+		return this.each(function(i, elem){
+			var queue = jQuery.queue( this, type, data );
+
+			if ( type == "fx" && queue[0] !== "inprogress" ) {
+				jQuery.dequeue( this, type );
+			}
+		});
+	},
+	dequeue: function(type){
+		return this.each(function(){
+			jQuery.dequeue( this, type );
+		});
+	},
+
+	// Based off of the plugin by Clint Helfers, with permission.
+	// http://blindsignals.com/index.php/2009/07/jquery-delay/
+	delay: function( time, type ) {
+		time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;
+		type = type || "fx";
+
+		return this.queue( type, function() {
+			var elem = this;
+			setTimeout(function() {
+				jQuery.dequeue( elem, type );
+			}, time );
+		});
+	},
+
+	clearQueue: function(type){
+		return this.queue( type || "fx", [] );
+	}
+});
-- 
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