Obwohl es keine perfekte Lösung ist, verwenden wir das folgende, um die normale Tastaturnavigation in einem HTML-Formular zu simulieren, das ein Select2-Element enthält.
/**
* WARNING: untested using Select2's option ['selectOnClose'=>true]
*
* This code was written because the Select2 widget does not handle
* tabbing from one form field to another. The desired behavior is that
* the user can use [Enter] to select a value from Select2 and [Tab] to move
* to the next field on the form.
*
* The following code moves focus to the next form field when a Select2 'close'
* event is triggered. If the next form field is a Select2 widget, the widget
* is opened automatically.
*
* Users that click elsewhere on the document will cause the active Select2
* widget to close. To prevent the code from overriding the user's focus choice
* a flag is added to each element that the users clicks on. If the flag is
* active, then the automatic focus script does not happen.
*
* To prevent conflicts with multiple Select2 widgets opening at once, a second
* flag is used to indicate the open status of a Select2 widget. It was
* necessary to use a flag instead of reading the class '--open' because using the
* class '--open' as an indicator flag caused timing/bubbling issues.
*
* To simulate a Shift+Tab event, a flag is recorded every time the shift key
* is pressed.
*/
jQuery(document).ready(function($) {
var docBody = $(document.body);
var shiftPressed = false;
var clickedOutside = false;
//var keyPressed = 0;
docBody.on('keydown', function(e) {
var keyCaptured = (e.keyCode ? e.keyCode : e.which);
//shiftPressed = keyCaptured == 16 ? true : false;
if (keyCaptured == 16) { shiftPressed = true; }
});
docBody.on('keyup', function(e) {
var keyCaptured = (e.keyCode ? e.keyCode : e.which);
//shiftPressed = keyCaptured == 16 ? true : false;
if (keyCaptured == 16) { shiftPressed = false; }
});
docBody.on('mousedown', function(e){
// remove other focused references
clickedOutside = false;
// record focus
if ($(e.target).is('[class*="select2"]')!=true) {
clickedOutside = true;
}
});
docBody.on('select2:opening', function(e) {
// this element has focus, remove other flags
clickedOutside = false;
// flag this Select2 as open
$(e.target).attr('data-s2open', 1);
});
docBody.on('select2:closing', function(e) {
// remove flag as Select2 is now closed
$(e.target).removeAttr('data-s2open');
});
docBody.on('select2:close', function(e) {
var elSelect = $(e.target);
elSelect.removeAttr('data-s2open');
var currentForm = elSelect.closest('form');
var othersOpen = currentForm.has('[data-s2open]').length;
if (othersOpen == 0 && clickedOutside==false) {
/* Find all inputs on the current form that would normally not be focus`able:
* - includes hidden <select> elements whose parents are visible (Select2)
* - EXCLUDES hidden <input>, hidden <button>, and hidden <textarea> elements
* - EXCLUDES disabled inputs
* - EXCLUDES read-only inputs
*/
var inputs = currentForm.find(':input:enabled:not([readonly], input:hidden, button:hidden, textarea:hidden)')
.not(function() { // do not include inputs with hidden parents
return $(this).parent().is(':hidden');
});
var elFocus = null;
$.each(inputs, function (index) {
var elInput = $(this);
if (elInput.attr('id') == elSelect.attr('id')) {
if (shiftPressed) { // Shift+Tab
elFocus = inputs.eq(index - 1);
} else {
elFocus = inputs.eq(index + 1);
}
return false;
}
});
if (elFocus !== null) {
// automatically move focus to the next field on the form
var isSelect2 = elFocus.siblings('.select2').length > 0;
if (isSelect2) {
elFocus.select2('open');
} else {
elFocus.focus();
}
}
}
});
/**
* Capture event where the user entered a Select2 control using the keyboard.
* http://stackoverflow.com/questions/20989458
* http://stackoverflow.com/questions/1318076
*/
docBody.on('focus', '.select2', function(e) {
var elSelect = $(this).siblings('select');
if (elSelect.is('[disabled]')==false && elSelect.is('[data-s2open]')==false
&& $(this).has('.select2-selection--single').length>0) {
elSelect.attr('data-s2open', 1);
elSelect.select2('open');
}
});
});
war ich nicht in der Lage dies auf der Dokumentations-Website zu reproduzieren, aber ich würde empfehlen, ein Ticket auf GitHub darüber zu schaffen (und auch die Schritt- Schritt-für-Schritt-Anweisungen zu reproduzieren). –
Nach dem Deaktivieren und Aktivieren aller Add-Ons stellt sich heraus, dass Vimperator nicht gut mit Select2 spielt, während es mit Select2 v3.x funktioniert (außerdem können Sie mit v3.x die Eingabetaste drücken, aber auch die Auf-/Ab-Tasten zum Öffnen bis die
Für das, was es wert ist (wenn nur jemand anderen Zeit sparen herauszufinden, ob es ein bekanntes Problem ist oder nicht) Ich habe ein Ticket auf GitHub über diesen Konflikt mit Vimperator bei https://github.com/select2/select2/issues eingereicht/3435. – Ted