/*!
* jQuery UI Autocomplete 1.10.3
* http://jqueryui.com
*
* Copyright 2013 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
* http://api.jqueryui.com/autocomplete/
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
* jquery.ui.position.js
* jquery.ui.menu.js
*/
(function( $, undefined ) {
// used to prevent race conditions with remote data sources
var requestIndex = 0;
$.widget( "ui.autocomplete", {
version: "1.10.3",
defaultElement: "<input>",
options: {
appendTo: null,
autoFocus: false,
delay: 300,
minLength: 1,
position: {
my: "left top",
at: "left bottom",
collision: "none"
},
source: null,
// callbacks
change: null,
close: null,
focus: null,
open: null,
response: null,
search: null,
select: null
},
pending: 0,
_create: function() {
// Some browsers only repeat keydown events, not keypress events,
// so we use the suppressKeyPress flag to determine if we've already
// handled the keydown event. #7269
// Unfortunately the code for & in keypress is the same as the up arrow,
// so we use the suppressKeyPressRepeat flag to avoid handling keypress
// events when we know the keydown event was used to modify the
// search term. #7799
var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
nodeName = this.element[0].nodeName.toLowerCase(),
isTextarea = nodeName === "textarea",
isInput = nodeName === "input";
this.isMultiLine =
// Textareas are always multi-line
isTextarea ? true :
// Inputs are always single-line, even if inside a contentEditable element
// IE also treats inputs as contentEditable
isInput ? false :
// All other element types are determined by whether or not they're contentEditable
this.element.prop( "isContentEditable" );
this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
this.isNewMenu = true;
this.element
.addClass( "ui-autocomplete-input" )
.attr( "autocomplete", "off" );
this._on( this.element, {
keydown: function( event ) {
/*jshint maxcomplexity:15*/
if ( this.element.prop( "readOnly" ) ) {
suppressKeyPress = true;
suppressInput = true;
suppressKeyPressRepeat = true;
return;
}
suppressKeyPress = false;
suppressInput = false;
suppressKeyPressRepeat = false;
var keyCode = $.ui.keyCode;
switch( event.keyCode ) {
case keyCode.PAGE_UP:
suppressKeyPress = true;
this._move( "previousPage", event );
break;
case keyCode.PAGE_DOWN:
suppressKeyPress = true;
this._move( "nextPage", event );
break;
case keyCode.UP:
suppressKeyPress = true;
this._keyEvent( "previous", event );
break;
case keyCode.DOWN:
suppressKeyPress = true;
this._keyEvent( "next", event );
break;
case keyCode.ENTER:
case keyCode.NUMPAD_ENTER:
// when menu is open and has focus
if ( this.menu.active ) {
// #6055 - Opera still allows the keypress to occur
// which causes forms to submit
suppressKeyPress = true;
event.preventDefault();
this.menu.select( event );
}
break;
case keyCode.TAB:
if ( this.menu.active ) {
this.menu.select( event );
}
break;
case keyCode.ESCAPE:
if ( this.menu.element.is( ":visible" ) ) {
this._value( this.term );
this.close( event );
// Different browsers have different default behavior for escape
// Single press can mean undo or clear
// Double press in IE means clear the whole form
event.preventDefault();
}
break;
default:
suppressKeyPressRepeat = true;
// search timeout should be triggered before the input value is changed
this._searchTimeout( event );
break;
}
},
keypress: function( event ) {
if ( suppressKeyPress ) {
suppressKeyPress = false;
if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
event.preventDefault();
}
return;
}
if ( suppressKeyPressRepeat ) {
return;
}
// replicate some key handlers to allow them to repeat in Firefox and Opera
var keyCode = $.ui.keyCode;
switch( event.keyCode ) {
case keyCode.PAGE_UP:
this._move( "previousPage", event );
break;
case keyCode.PAGE_DOWN:
this._move( "nextPage", event );
break;
case keyCode.UP:
this._keyEvent( "previous", event );
break;
case keyCode.DOWN:
this._keyEvent( "next", event );
break;
}
},
input: function( event ) {
if ( suppressInput ) {
suppressInput = false;
event.preventDefault();
return;
}
this._searchTimeout( event );
},
focus: function() {
this.selectedItem = null;
this.previous = this._value();
},
blur: function( event ) {
if ( this.cancelBlur ) {
delete this.cancelBlur;
return;
}
clearTimeout( this.searching );
this.close( event );
this._change( event );
}
});
this._initSource();
this.menu = $( "<ul>" )
.addClass( "ui-autocomplete ui-front" )
.appendTo( this._appendTo() )
.menu({
// disable ARIA support, the live region takes care of that
role: null
})
.hide()
.data( "ui-menu" );
this._on( this.menu.element, {
mousedown: function( event ) {
// prevent moving focus out of the text field
event.preventDefault();
// IE doesn't prevent moving focus even with event.preventDefault()
// so we set a flag to know when we should ignore the blur event
this.cancelBlur = true;
this._delay(function() {
delete this.cancelBlur;
});
// clicking on the scrollbar causes focus to shift to the body
// but we can't detect a mouseup or a click immediately afterward
// so we have to track the next mousedown and close the menu if
// the user clicks somewhere outside of the autocomplete
var menuElement = this.menu.element[ 0 ];
if ( !$( event.target ).closest( ".ui-menu-item" ).length ) {
this._delay(function() {
var that = this;
this.document.one( "mousedown", function( event ) {
if ( event.target !== that.element[ 0 ] &&
event.target !== menuElement &&
!$.contains( menuElement, event.target ) ) {
that.close();
}
});
});
}
},
menufocus: function( event, ui ) {
// support: Firefox
// Prevent accidental activation of menu items in Firefox (#7024 #9118)
if ( this.isNewMenu ) {
this.isNewMenu = false;
if ( event.originalEvent && /^mouse/.test( event.originalEvent.type ) ) {
this.menu.blur();
this.document.one( "mousemove", function() {
$( event.target ).trigger( event.originalEvent );
});
return;
}
}
var item = ui.item.data( "ui-autocomplete-item" );
if ( false !== this._trigger( "focus", event, { item: item } ) ) {
// use value to match what will end up in the input, if it was a key event
if ( event.originalEvent && /^key/.test( event.originalEvent.type ) ) {
this._value( item.value );
}
} else {
// Normally the input is populated with the item's value as the
// menu is navigated, causing screen readers to notice a change and
// announce the item. Since the focus event was canceled, this doesn't
// happen, so we update the live region so that screen readers can
// still notice the change and announce it.
this.liveRegion.text( item.value );
}
},
menuselect: function( event, ui ) {
var item = ui.item.data( "ui-autocomplete-item" ),
previous = this.previous;
// only trigger when focus was lost (click on menu)
if ( this.element[0] !== this.document[0].activeElement ) {
this.element.focus();
this.previous = previous;
// #6109 - IE triggers two focus events and the second
// is asynchronous, so we need to reset the previous
// term synchronously and asynchronously :-(
this._delay(function() {
this.previous = previous;
this.selectedItem = item;
});
}
if ( false !== this._trigger( "select", event, { item: item } ) ) {
this._value( item.value );
}
// reset the term after the select event
// this allows custom select handling to work properly
this.term = this._value();
this.close( event );
this.selectedItem = item;
}
});
this.liveRegion = $( "<span>", {
role: "status",
"aria-live": "polite"
})
.addClass( "ui-helper-hidden-accessible" )
.insertBefore( this.element );
// turning off autocomplete prevents the browser from remembering the
// value when navigating through history, so we re-enable autocomplete
// if the page is unloaded before the widget is destroyed. #7790
this._on( this.window, {
beforeunload: function() {
this.element.removeAttr( "autocomplete" );
}
});
},
_destroy: function() {
clearTimeout( this.searching );
this.element
.removeClass( "ui-autocomplete-input" )
.removeAttr( "autocomplete" );
this.menu.element.remove();
this.liveRegion.remove();
},
_setOption: function( key, value ) {
this._super( key, value );
if ( key === "source" ) {
this._initSource();
}
if ( key === "appendTo" ) {
this.menu.element.appendTo( this._appendTo() );
}
if ( key === "disabled" && value && this.xhr ) {
this.xhr.abort();
}
},
_appendTo: function() {
var element = this.options.appendTo;
if ( element ) {
element = element.jquery || element.nodeType ?
$( element ) :
this.document.find( element ).eq( 0 );
}
if ( !element ) {
element = this.element.closest( ".ui-front" );
}
if ( !element.length ) {
element = this.document[0].body;
}
return element;
},
_initSource: function() {
var array, url,
that = this;
if ( $.isArray(this.options.source) ) {
array = this.options.source;
this.source = function( request, response ) {
response( $.ui.autocomplete.filter( array, request.term ) );
};
} else if ( typeof this.options.source === "string" ) {
url = this.options.source;
this.source = function( request, response ) {
if ( that.xhr ) {
that.xhr.abort();
}
that.xhr = $.ajax({
url: url,
data: request,
dataType: "json",
success: function( data ) {
response( data );
},
error: function() {
response( [] );
}
});
};
} else {
this.source = this.options.source;
}
},
_searchTimeout: function( event ) {
clearTimeout( this.searching );
this.searching = this._delay(function() {
// only search if the value has changed
if ( this.term !== this._value() ) {
this.selectedItem = null;
this.search( null, event );
}
}, this.options.delay );
},
search: function( value, event ) {
value = value != null ? value : this._value();
// always save the actual value, not the one passed as an argument
this.term = this._value();
if ( value.length < this.options.minLength ) {
return this.close( event );
}
if ( this._trigger( "search", event ) === false ) {
return;
}
return this._search( value );
},
_search: function( value ) {
this.pending++;
this.element.addClass( "ui-autocomplete-loading" );
this.cancelSearch = false;
this.source( { term: value }, this._response() );
},
_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 );
}
this._trigger( "response", null, { content: content } );
if ( !this.options.disabled && content && content.length && !this.cancelSearch ) {
this._suggest( content );
this._trigger( "open" );
} else {
// use ._close() instead of .close() so we don't cancel future searches
this._close();
}
},
close: function( event ) {
this.cancelSearch = true;
this._close( event );
},
_close: function( event ) {
if ( this.menu.element.is( ":visible" ) ) {
this.menu.element.hide();
this.menu.blur();
this.isNewMenu = true;
this._trigger( "close", event );
}
},
_change: function( event ) {
if ( this.previous !== this._value() ) {
this._trigger( "change", event, { item: this.selectedItem } );
}
},
_normalize: function( items ) {
// assume all items have the right format when the first item is complete
if ( items.length && items[0].label && items[0].value ) {
return items;
}
return $.map( items, function( item ) {
if ( typeof item === "string" ) {
return {
label: item,
value: item
};
}
return $.extend({
label: item.label || item.value,
value: item.value || item.label
}, item );
});
},
_suggest: function( items ) {
var ul = this.menu.element.empty();
this._renderMenu( ul, items );
this.isNewMenu = true;
this.menu.refresh();
// size and position menu
ul.show();
this._resizeMenu();
ul.position( $.extend({
of: this.element
}, this.options.position ));
if ( this.options.autoFocus ) {
this.menu.next();
}
},
_resizeMenu: function() {
var ul = this.menu.element;
ul.outerWidth( Math.max(
// Firefox wraps long text (possibly a rounding bug)
// so we add 1px to avoid the wrapping (#7513)
ul.width( "" ).outerWidth() + 1,
this.element.outerWidth()
) );
},
_renderMenu: function( ul, items ) {
var that = this;
$.each( items, function( index, item ) {
that._renderItemData( ul, item );
});
},
_renderItemData: function( ul, item ) {
return this._renderItem( ul, item ).data( "ui-autocomplete-item", item );
},
_renderItem: function( ul, item ) {
return $( "<li>" )
.append( $( "<a>" ).text( item.label ) )
.appendTo( ul );
},
_move: function( direction, event ) {
if ( !this.menu.element.is( ":visible" ) ) {
this.search( null, event );
return;
}
if ( this.menu.isFirstItem() && /^previous/.test( direction ) ||
this.menu.isLastItem() && /^next/.test( direction ) ) {
this._value( this.term );
this.menu.blur();
return;
}
this.menu[ direction ]( event );
},
widget: function() {
return this.menu.element;
},
_value: function() {
return this.valueMethod.apply( this.element, arguments );
},
_keyEvent: function( keyEvent, event ) {
if ( !this.isMultiLine || this.menu.element.is( ":visible" ) ) {
this._move( keyEvent, event );
// prevents moving cursor to beginning/end of the text field in some browsers
event.preventDefault();
}
}
});
$.extend( $.ui.autocomplete, {
escapeRegex: function( value ) {
return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
},
filter: function(array, term) {
var matcher = new RegExp( $.ui.autocomplete.escapeRegex(term), "i" );
return $.grep( array, function(value) {
return matcher.test( value.label || value.value || value );
});
}
});
// live region extension, adding a `messages` option
// NOTE: This is an experimental API. We are still investigating
// a full solution for string manipulation and internationalization.
$.widget( "ui.autocomplete", $.ui.autocomplete, {
options: {
messages: {
noResults: "No search results.",
results: function( amount ) {
return amount + ( amount > 1 ? " results are" : " result is" ) +
" available, use up and down arrow keys to navigate.";
}
}
},
__response: function( content ) {
var message;
this._superApply( arguments );
if ( this.options.disabled || this.cancelSearch ) {
return;
}
if ( content && content.length ) {
message = this.options.messages.results( content.length );
} else {
message = this.options.messages.noResults;
}
this.liveRegion.text( message );
}
});
}( jQuery ));
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