| Current File : //proc/self/root/usr/share/javascript/jquery-ui/ui/widgets/autocomplete.js |
/*!
* jQuery UI Autocomplete 1.13.2
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*/
//>>label: Autocomplete
//>>group: Widgets
//>>description: Lists suggested words as the user is typing.
//>>docs: http://api.jqueryui.com/autocomplete/
//>>demos: http://jqueryui.com/autocomplete/
//>>css.structure: ../../themes/base/core.css
//>>css.structure: ../../themes/base/autocomplete.css
//>>css.theme: ../../themes/base/theme.css
( function( factory ) {
"use strict";
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define( [
"jquery",
"./menu",
"../keycode",
"../position",
"../safe-active-element",
"../version",
"../widget"
], factory );
} else {
// Browser globals
factory( jQuery );
}
} )( function( $ ) {
"use strict";
$.widget( "ui.autocomplete", {
version: "1.13.2",
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
},
requestIndex: 0,
pending: 0,
liveRegionTimer: null,
_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";
// Textareas are always multi-line
// Inputs are always single-line, even if inside a contentEditable element
// IE also treats inputs as contentEditable
// All other element types are determined by whether or not they're contentEditable
this.isMultiLine = isTextarea || !isInput && this._isContentEditable( this.element );
this.valueMethod = this.element[ isTextarea || isInput ? "val" : "text" ];
this.isNewMenu = true;
this._addClass( "ui-autocomplete-input" );
this.element.attr( "autocomplete", "off" );
this._on( this.element, {
keydown: function( event ) {
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:
// 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" ) ) {
if ( !this.isMultiLine ) {
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 ) {
clearTimeout( this.searching );
this.close( event );
this._change( event );
}
} );
this._initSource();
this.menu = $( "<ul>" )
.appendTo( this._appendTo() )
.menu( {
// disable ARIA support, the live region takes care of that
role: null
} )
.hide()
// Support: IE 11 only, Edge <= 14
// For other browsers, we preventDefault() on the mousedown event
// to keep the dropdown from taking focus from the input. This doesn't
// work for IE/Edge, causing problems with selection and scrolling (#9638)
// Happily, IE and Edge support an "unselectable" attribute that
// prevents an element from receiving focus, exactly what we want here.
.attr( {
"unselectable": "on"
} )
.menu( "instance" );
this._addClass( this.menu.element, "ui-autocomplete", "ui-front" );
this._on( this.menu.element, {
mousedown: function( event ) {
// Prevent moving focus out of the text field
event.preventDefault();
},
menufocus: function( event, ui ) {
var label, item;
// 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;
}
}
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 );
}
}
// Announce the value in the liveRegion
label = ui.item.attr( "aria-label" ) || item.value;
if ( label && String.prototype.trim.call( label ).length ) {
clearTimeout( this.liveRegionTimer );
this.liveRegionTimer = this._delay( function() {
this.liveRegion.html( $( "<div>" ).text( label ) );
}, 100 );
}
},
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 ] !== $.ui.safeActiveElement( this.document[ 0 ] ) ) {
this.element.trigger( "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 = $( "<div>", {
role: "status",
"aria-live": "assertive",
"aria-relevant": "additions"
} )
.appendTo( this.document[ 0 ].body );
this._addClass( this.liveRegion, null, "ui-helper-hidden-accessible" );
// 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.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();
}
},
_isEventTargetInWidget: function( event ) {
var menuElement = this.menu.element[ 0 ];
return event.target === this.element[ 0 ] ||
event.target === menuElement ||
$.contains( menuElement, event.target );
},
_closeOnClickOutside: function( event ) {
if ( !this._isEventTargetInWidget( event ) ) {
this.close();
}
},
_appendTo: function() {
var element = this.options.appendTo;
if ( element ) {
element = element.jquery || element.nodeType ?
$( element ) :
this.document.find( element ).eq( 0 );
}
if ( !element || !element[ 0 ] ) {
element = this.element.closest( ".ui-front, dialog" );
}
if ( !element.length ) {
element = this.document[ 0 ].body;
}
return element;
},
_initSource: function() {
var array, url,
that = this;
if ( Array.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() {
// Search if the value has changed, or if the user retypes the same value (see #7434)
var equalValues = this.term === this._value(),
menuVisible = this.menu.element.is( ":visible" ),
modifierKey = event.altKey || event.ctrlKey || event.metaKey || event.shiftKey;
if ( !equalValues || ( equalValues && !menuVisible && !modifierKey ) ) {
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._addClass( "ui-autocomplete-loading" );
this.cancelSearch = false;
this.source( { term: value }, this._response() );
},
_response: function() {
var index = ++this.requestIndex;
return function( content ) {
if ( index === this.requestIndex ) {
this.__response( content );
}
this.pending--;
if ( !this.pending ) {
this._removeClass( "ui-autocomplete-loading" );
}
}.bind( this );
},
__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 ) {
// Remove the handler that closes the menu on outside clicks
this._off( this.document, "mousedown" );
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( {}, item, {
label: item.label || item.value,
value: item.value || item.label
} );
} );
},
_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();
}
// Listen for interactions outside of the widget (#6642)
this._on( this.document, {
mousedown: "_closeOnClickOutside"
} );
},
_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( $( "<div>" ).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 ) ) {
if ( !this.isMultiLine ) {
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();
}
},
// Support: Chrome <=50
// We should be able to just use this.element.prop( "isContentEditable" )
// but hidden elements always report false in Chrome.
// https://code.google.com/p/chromium/issues/detail?id=313082
_isContentEditable: function( element ) {
if ( !element.length ) {
return false;
}
var editable = element.prop( "contentEditable" );
if ( editable === "inherit" ) {
return this._isContentEditable( element.parent() );
}
return editable === "true";
}
} );
$.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;
}
clearTimeout( this.liveRegionTimer );
this.liveRegionTimer = this._delay( function() {
this.liveRegion.html( $( "<div>" ).text( message ) );
}, 100 );
}
} );
return $.ui.autocomplete;
} );