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Autocomplete: Move race condition logic from ajax requests to general response handler. Fixes #8234 - Autocomplete: Automatic race-condition handling for custom sources.

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This commit is contained in:
Scott González 2012-04-03 16:47:14 -04:00
parent 4ade13450e
commit 96f9c84b7b
2 changed files with 49 additions and 18 deletions
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29
tests/unit/autocomplete/autocomplete_core.js
View File

@ -123,4 +123,33 @@ test( "allow form submit on enter when menu is not active", function() {
}
})();
asyncTest( "handle race condition", function() {
expect( 3 );
var count = 0,
element = $( "#autocomplete" ).autocomplete({
source: function( request, response ) {
count++;
if ( request.term.length === 1 ) {
equal( count, 1, "request with 1 character is first" );
setTimeout(function() {
response([ "one" ]);
setTimeout( checkResults, 1 );
}, 1 );
return;
}
equal( count, 2, "request with 2 characters is second" );
response([ "two" ]);
}
});
element.autocomplete( "search", "a" );
element.autocomplete( "search", "ab" );
function checkResults() {
equal( element.autocomplete( "widget" ).find( ".ui-menu-item" ).text(), "two",
"correct results displayed" );
start();
}
});
}( jQuery ) );

38
ui/jquery.ui.autocomplete.js vendored
View File

@ -186,9 +186,6 @@ $.widget( "ui.autocomplete", {
self._change( event );
});
this._initSource();
this.response = function() {
return self._response.apply( self, arguments );
};
this.menu = $( "<ul></ul>" )
.addClass( "ui-autocomplete" )
.appendTo( this.document.find( this.options.appendTo || "body" )[0] )
@ -326,18 +323,11 @@ $.widget( "ui.autocomplete", {
url: url,
data: request,
dataType: "json",
context: {
autocompleteRequest: ++requestIndex
},
success: function( data, status ) {
if ( this.autocompleteRequest === requestIndex ) {
response( data );
}
response( data );
},
error: function() {
if ( this.autocompleteRequest === requestIndex ) {
response( [] );
}
response( [] );
}
});
};
@ -380,10 +370,26 @@ $.widget( "ui.autocomplete", {
this.element.addClass( "ui-autocomplete-loading" );
this.cancelSearch = false;
this.source( { term: value }, this.response );
this.source( { term: value }, this._response() );
},
_response: function( content ) {
_response: function() {
var that = this,
index = ++requestIndex;
return function( content ) {
if ( index === requestIndex ) {
that.__response( content );
}
that.pending--;
if ( !that.pending ) {
that.element.removeClass( "ui-autocomplete-loading" );
}
};
},
__response: function( content ) {
if ( content ) {
content = this._normalize( content );
}
@ -395,10 +401,6 @@ $.widget( "ui.autocomplete", {
// use ._close() instead of .close() so we don't cancel future searches
this._close();
}
this.pending--;
if ( !this.pending ) {
this.element.removeClass( "ui-autocomplete-loading" );
}
},
close: function( event ) {