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define([
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"./core",
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"./data/var/data_priv",
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"./deferred",
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"./callbacks"
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], function( jQuery, data_priv ) {
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jQuery.extend({
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queue: function( elem, type, data ) {
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var queue;
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if ( elem ) {
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type = ( type || "fx" ) + "queue";
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queue = data_priv.get( elem, type );
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// Speed up dequeue by getting out quickly if this is just a lookup
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if ( data ) {
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if ( !queue || jQuery.isArray( data ) ) {
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queue = data_priv.access( elem, type, jQuery.makeArray(data) );
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} else {
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queue.push( data );
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}
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}
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return queue || [];
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}
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},
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dequeue: function( elem, type ) {
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type = type || "fx";
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var queue = jQuery.queue( elem, type ),
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startLength = queue.length,
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fn = queue.shift(),
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hooks = jQuery._queueHooks( elem, type ),
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next = function() {
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jQuery.dequeue( elem, type );
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};
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// If the fx queue is dequeued, always remove the progress sentinel
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if ( fn === "inprogress" ) {
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fn = queue.shift();
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startLength--;
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}
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if ( fn ) {
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// Add a progress sentinel to prevent the fx queue from being
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// automatically dequeued
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if ( type === "fx" ) {
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queue.unshift( "inprogress" );
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}
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// Clear up the last queue stop function
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delete hooks.stop;
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fn.call( elem, next, hooks );
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}
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if ( !startLength && hooks ) {
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hooks.empty.fire();
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}
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},
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// Not public - generate a queueHooks object, or return the current one
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_queueHooks: function( elem, type ) {
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var key = type + "queueHooks";
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return data_priv.get( elem, key ) || data_priv.access( elem, key, {
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empty: jQuery.Callbacks("once memory").add(function() {
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data_priv.remove( elem, [ type + "queue", key ] );
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})
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});
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}
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});
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jQuery.fn.extend({
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queue: function( type, data ) {
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var setter = 2;
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if ( typeof type !== "string" ) {
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data = type;
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type = "fx";
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setter--;
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}
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if ( arguments.length < setter ) {
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return jQuery.queue( this[0], type );
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}
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return data === undefined ?
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this :
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this.each(function() {
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var queue = jQuery.queue( this, type, data );
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92
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// Ensure a hooks for this queue
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jQuery._queueHooks( this, type );
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if ( type === "fx" && queue[0] !== "inprogress" ) {
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jQuery.dequeue( this, type );
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}
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});
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},
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dequeue: function( type ) {
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return this.each(function() {
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jQuery.dequeue( this, type );
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});
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},
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clearQueue: function( type ) {
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return this.queue( type || "fx", [] );
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},
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// Get a promise resolved when queues of a certain type
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// are emptied (fx is the type by default)
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promise: function( type, obj ) {
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var tmp,
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count = 1,
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defer = jQuery.Deferred(),
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elements = this,
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i = this.length,
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resolve = function() {
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if ( !( --count ) ) {
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defer.resolveWith( elements, [ elements ] );
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}
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};
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if ( typeof type !== "string" ) {
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obj = type;
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type = undefined;
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}
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type = type || "fx";
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128
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while ( i-- ) {
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tmp = data_priv.get( elements[ i ], type + "queueHooks" );
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if ( tmp && tmp.empty ) {
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count++;
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tmp.empty.add( resolve );
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}
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}
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resolve();
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return defer.promise( obj );
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}
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});
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140
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return jQuery;
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});
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