static.scripts.chosen.ajax-chosen.js Maven / Gradle / Ivy
(function() {
(function($) {
return $.fn.ajaxChosen = function(settings, callback, chosenOptions) {
var defaultOptions, options, select;
if (settings == null) {
settings = {};
}
defaultOptions = {
minTermLength : 1,
jsonTermKey : "term"
};
select = this;
options = $.extend({}, defaultOptions, $(select).data(), settings);
if (!chosenOptions) {
chosenOptions = {};
}
if (!chosenOptions.placeholder_text) {
chosenOptions.placeholder_text = "请输入内容查询";
}
if (!chosenOptions.no_results_text) {
chosenOptions.no_results_text = "没有匹配结果";
}
this.chosen(chosenOptions);
var __input;
if (this.prop('multiple')) {
__input = this.next('.chosen-container').find(
".search-field > input");
} else {
__input = this.next('.chosen-container').find(
".chosen-search > input");
}
__input.bind('qj:execute', function() {
var field, msg, success, untrimmed_val, val;
untrimmed_val = $(this).val();
val = $.trim($(this).val());
if (val === $(this).data('prevVal') && untrimmed_val.length>0) {
return false;
}
$(this).data('prevVal', untrimmed_val);
if (val.length < options.minTermLength) {
return false;
}
field = $(this);
if (options.data == null) {
options.data = {};
}
options.data[options.jsonTermKey] = val;
if (options.postData != undefined) {
var extraData = options.postData();
$.each(extraData, function(key, value) {
options.data[key] = value;
});
}
success = options.success;
options.success = function(data) {
var items, nbItems, selected_values;
if (data == null) {
return;
}
selected_values = [];
select.find('option').each(
function() {
if (!$(this).is(":selected")) {
return $(this).remove();
} else {
return selected_values.push($(this).val()
+ "-" + $(this).text());
}
});
items = callback(data);
nbItems = 0;
$.each(items,
function(value, text) {
nbItems++;
if ($.inArray(value + "-" + text,
selected_values) === -1) {
return $("").val(value)
.html(text).appendTo(select);
}
});
if (nbItems) {
select.trigger("chosen:updated.chosen");
} else {
select.data().chosen.no_results_clear();
select.data().chosen.no_results(field.val());
}
if (settings.success != null) {
settings.success(data);
}
return field.val(untrimmed_val);
};
return $.ajax(options);
});
var lastKeyUpTime = null;
// 界定是否在输入的阈值（单位:毫秒）,如果一个用户在n毫秒内没有输入动作，那么就可以认为用户已经输入完毕可以执行ajax动作了
var typingThreshold = 800;
__input.bind("keyup", function() {
lastKeyUpTime = new Date().getTime();
setTimeout(function() {
var currentKeyUpTime = new Date().getTime();
if (currentKeyUpTime - lastKeyUpTime > typingThreshold) {
__input.trigger('qj:execute');
}
}, typingThreshold + 100);
});
return __input;
};
})(jQuery);
}).call(this);