/*
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* Autocomplete - jQuery plugin 1.1pre
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*
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* Copyright (c) 2007 Dylan Verheul, Dan G. Switzer, Anjesh Tuladhar, Jörn Zaefferer
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*
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* Dual licensed under the MIT and GPL licenses:
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*
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* Revision: $Id: jquery.autocomplete.js 5785 2008-07-12 10:37:33Z joern.zaefferer $
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*
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*/
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(function ($) {
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$.fn.extend({
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autocomplete: function (urlOrData, options) {
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var isUrl = typeof urlOrData == "string";
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options = $.extend({}, $.Autocompleter.defaults, {
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url: isUrl ? urlOrData : null,
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data: isUrl ? null : urlOrData,
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delay: isUrl ? $.Autocompleter.defaults.delay : 10,
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max: options && !options.scroll ? 10 : 150,
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rownum: -1
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}, options);
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// if highlight is set to false, replace it with a do-nothing function
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options.highlight = options.highlight || function (value) { return value; };
|
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// if the formatMatch option is not specified, then use formatItem for backwards compatibility
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options.formatMatch = options.formatMatch || options.formatItem;
|
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return this.each(function () {
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new $.Autocompleter(this, options);
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});
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},
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result: function (handler) {
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return this.bind("result", handler);
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},
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search: function (handler) {
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return this.trigger("search", [handler]);
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},
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flushCache: function () {
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return this.trigger("flushCache"); //trigger是触发事件的方法
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},
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setOptions: function (options) {
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return this.trigger("setOptions", [options]);
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},
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unautocomplete: function () {
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return this.trigger("unautocomplete");
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}
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});
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$.Autocompleter = function (input, options) {
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var KEY = {
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UP: 38,
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DOWN: 40,
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DEL: 46,
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TAB: 9,
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RETURN: 13,
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ESC: 27,
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COMMA: 188,
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PAGEUP: 33,
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PAGEDOWN: 34,
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BACKSPACE: 8
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};
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// Create $ object for input element
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var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass);
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var timeout;
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var previousValue = "";
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var cache = $.Autocompleter.Cache(options);
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var hasFocus = 0;
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var lastKeyPressCode;
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var config = {
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mouseDownOnSelect: false
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};
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var select = $.Autocompleter.Select(options, input, selectCurrent, config);
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var blockSubmit;
|
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// prevent form submit in opera when selecting with return key
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$.browser.opera && $(input.form).bind("submit.autocomplete", function () {
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if (blockSubmit) {
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blockSubmit = false;
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return false;
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}
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});
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// only opera doesn't trigger keydown multiple times while pressed, others don't work with keypress at all
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$input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function (event) {
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// track last key pressed
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lastKeyPressCode = event.keyCode;
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switch (event.keyCode) {
|
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case KEY.UP:
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event.preventDefault();
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if (select.visible()) {
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select.prev();
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} else {
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onChange(0, true);
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}
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break;
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case KEY.DOWN:
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event.preventDefault();
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if (select.visible()) {
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select.next();
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} else {
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onChange(0, true);
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}
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break;
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case KEY.PAGEUP:
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event.preventDefault();
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if (select.visible()) {
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select.pageUp();
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} else {
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onChange(0, true);
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}
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break;
|
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case KEY.PAGEDOWN:
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event.preventDefault();
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if (select.visible()) {
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select.pageDown();
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} else {
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onChange(0, true);
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}
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break;
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// matches also semicolon
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case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
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case KEY.TAB:
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case KEY.RETURN:
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if (selectCurrent()) {
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// stop default to prevent a form submit, Opera needs special handling
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event.preventDefault();
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blockSubmit = true;
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return false;
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}
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break;
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case KEY.ESC:
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select.hide();
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break;
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default:
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clearTimeout(timeout);
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timeout = setTimeout(onChange, options.delay);
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//options.delay
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break;
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}
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}).focus(function () {
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// track whether the field has focus, we shouldn't process any
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// results if the field no longer has focus
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hasFocus++;
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}).blur(function () {
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hasFocus = 0;
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// options.nodatatip();
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if (!config.mouseDownOnSelect) {
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hideResults();
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options.nodatatip();
|
}
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}).click(function () {
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// show select when clicking in a focused field
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if (hasFocus++ > 1 && !select.visible()) {
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onChange(0, true);
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}
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}).bind("search", function () {
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// TODO why not just specifying both arguments?
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var fn = (arguments.length > 1) ? arguments[1] : null;
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function findValueCallback(q, data) {
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var result;
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if (data && data.length) {
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for (var i = 0; i < data.length; i++) {
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if (data[i].result.toLowerCase() == q.toLowerCase()) {
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result = data[i];
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break;
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}
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}
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}
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if (typeof fn == "function") fn(result);
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else $input.trigger("result", result && [result.data, result.value]);
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}
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$.each(trimWords($input.val()), function (i, value) {
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request(value, findValueCallback, findValueCallback);
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});
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}).bind("flushCache", function () {
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cache.flush();
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}).bind("setOptions", function () {
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$.extend(options, arguments[1]);
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// if we've updated the data, repopulate
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if ("data" in arguments[1])
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cache.populate();
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}).bind("unautocomplete", function () {
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select.unbind();
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$input.unbind();
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$(input.form).unbind(".autocomplete");
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});
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|
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function selectCurrent() {
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var selected = select.selected();
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if (!selected)
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return false;
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var v = selected.result;
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previousValue = v;
|
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if (options.multiple) {
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var words = trimWords($input.val());
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if (words.length > 1) {
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v = words.slice(0, words.length - 1).join(options.multipleSeparator) + options.multipleSeparator + v;
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}
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v += options.multipleSeparator;
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}
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$input.val(v);
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hideResultsNow();
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$input.trigger("result", [selected.data, selected.value]);
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return true;
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}
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function onChange(crap, skipPrevCheck) {
|
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if (lastKeyPressCode == KEY.DEL) {
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select.hide();
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return;
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}
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var currentValue = $input.val();
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if (!skipPrevCheck && currentValue == previousValue)
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return;
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previousValue = currentValue;
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currentValue = lastWord(currentValue);
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if (currentValue.length >= options.minChars) {
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$input.addClass(options.loadingClass);
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if (!options.matchCase)
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currentValue = currentValue.toLowerCase();
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request(currentValue, receiveData, hideResultsNow);
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} else {
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stopLoading();
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select.hide();
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}
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};
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function trimWords(value) {
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if (!value) {
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return [""];
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}
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var words = value.split(options.multipleSeparator);
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var result = [];
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$.each(words, function (i, value) {
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if ($.trim(value))
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result[i] = $.trim(value);
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});
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return result;
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}
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function lastWord(value) {
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if (!options.multiple)
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return value;
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var words = trimWords(value);
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return words[words.length - 1];
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}
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// fills in the input box w/the first match (assumed to be the best match)
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// q: the term entered
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// sValue: the first matching result
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function autoFill(q, sValue) {
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// autofill in the complete box w/the first match as long as the user hasn't entered in more data
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// if the last user key pressed was backspace, don't autofill
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if (options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE) {
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// fill in the value (keep the case the user has typed)
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$input.val($input.val() + sValue.substring(lastWord(previousValue).length));
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// select the portion of the value not typed by the user (so the next character will erase)
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$.Autocompleter.Selection(input, previousValue.length, previousValue.length + sValue.length);
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}
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};
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function hideResults() {
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clearTimeout(timeout);
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timeout = setTimeout(hideResultsNow, 200);
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};
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function hideResultsNow() {
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var wasVisible = select.visible();
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select.hide();
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clearTimeout(timeout);
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stopLoading();
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if (options.mustMatch) {
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// call search and run callback
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$input.search(
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function (result) {
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// if no value found, clear the input box
|
if (!result) {
|
if (options.multiple) {
|
var words = trimWords($input.val()).slice(0, -1);
|
$input.val(words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : ""));
|
}
|
else
|
$input.val("");
|
}
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}
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);
|
}
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if (wasVisible)
|
// position cursor at end of input field
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$.Autocompleter.Selection(input, input.value.length, input.value.length);
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};
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function receiveData(q, data) {
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if (data && data.length && hasFocus) {
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stopLoading();
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select.display(data, q);
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autoFill(q, data[0].value);
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select.show();
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} else {
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// options.nodatatip(); //jxj 20140819
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hideResultsNow();
|
}
|
};
|
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function request(term, success, failure) {
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if (!options.matchCase)
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term = term.toLowerCase();
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var data = cache.load(term);
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// recieve the cached data
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if (data && data.length) {
|
success(term, data);
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// if an AJAX url has been supplied, try loading the data now
|
}
|
else if ((typeof options.url == "string") && (options.url.length > 0)) {
|
|
//if (data.length == 0) {
|
select.emptyList();
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failure(term);
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//}
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//else {
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var extraParams = {
|
timestamp: +new Date()
|
};
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$.each(options.extraParams, function (key, param) {
|
extraParams[key] = typeof param == "function" ? param() : param;
|
});
|
|
$.ajax({
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// try to leverage ajaxQueue plugin to abort previous requests
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mode: "abort",
|
// limit abortion to this input
|
port: "autocomplete" + input.name,
|
dataType: options.dataType,
|
url: options.url,
|
data: $.extend({
|
q: lastWord(term),
|
limit: options.max
|
}, extraParams),
|
success: function (data) {
|
var parsed = options.parse && options.parse(data) || parse(data);
|
cache.add(term, parsed);
|
success(term, parsed);
|
}
|
});
|
//}
|
} else {
|
// if we have a failure, we need to empty the list -- this prevents the the [TAB] key from selecting the last successful match
|
|
select.emptyList();
|
failure(term);
|
}
|
};
|
|
function parse(data) {
|
var parsed = [];
|
var rows = data.split("\n");
|
for (var i = 0; i < rows.length; i++) {
|
var row = $.trim(rows[i]);
|
if (row) {
|
row = row.split("|");
|
parsed[parsed.length] = {
|
data: row,
|
value: row[0],
|
result: options.formatResult && options.formatResult(row, row[0]) || row[0]
|
};
|
}
|
}
|
return parsed;
|
};
|
|
function stopLoading() {
|
$input.removeClass(options.loadingClass);
|
};
|
|
};
|
|
$.Autocompleter.defaults = {
|
inputClass: "ac_input",
|
resultsClass: "ac_results",
|
loadingClass: "ac_loading",
|
minChars: 1,
|
delay: 500,
|
matchCase: false,
|
matchSubset: true,
|
matchContains: false,
|
cacheLength: 10,
|
max: 100,
|
mustMatch: false,
|
extraParams: {},
|
selectFirst: true,
|
formatItem: function (row) { return row[0]; },
|
formatMatch: null,
|
autoFill: false,
|
width: 0,
|
multiple: false,
|
multipleSeparator: ", ",
|
highlight: function (value, term) {
|
return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");
|
},
|
scroll: true,
|
scrollHeight: 180,
|
nodatatip: function () { }
|
};
|
|
$.Autocompleter.Cache = function (options) {
|
|
var data = {};
|
var length = 0;
|
|
function matchSubset(s, sub) {
|
if (!options.matchCase)
|
s = s.toLowerCase();
|
var i = s.indexOf(sub);
|
if (options.matchContains == "word") {
|
i = s.toLowerCase().search("\\b" + sub.toLowerCase());
|
}
|
if (i == -1) return false;
|
return i == 0 || options.matchContains;
|
};
|
|
function add(q, value) {
|
if (length > options.cacheLength) {
|
flush();
|
}
|
if (!data[q]) {
|
length++;
|
}
|
data[q] = value;
|
}
|
|
function populate() {
|
if (!options.data) return false;
|
// track the matches
|
var stMatchSets = {},
|
nullData = 0;
|
|
// no url was specified, we need to adjust the cache length to make sure it fits the local data store
|
if (!options.url) options.cacheLength = 1;
|
|
// track all options for minChars = 0
|
stMatchSets[""] = [];
|
|
// loop through the array and create a lookup structure
|
for (var i = 0, ol = options.data.length; i < ol; i++) {
|
var rawValue = options.data[i];
|
// if rawValue is a string, make an array otherwise just reference the array
|
rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue;
|
|
var value = options.formatMatch(rawValue, i + 1, options.data.length);
|
if (value === false)
|
continue;
|
|
var firstChar = value.charAt(0).toLowerCase();
|
// if no lookup array for this character exists, look it up now
|
if (!stMatchSets[firstChar])
|
stMatchSets[firstChar] = [];
|
|
// if the match is a string
|
var row = {
|
value: value,
|
data: rawValue,
|
result: options.formatResult && options.formatResult(rawValue) || value
|
};
|
|
// push the current match into the set list
|
stMatchSets[firstChar].push(row);
|
|
// keep track of minChars zero items
|
if (nullData++ < options.max) {
|
stMatchSets[""].push(row);
|
}
|
};
|
|
// add the data items to the cache
|
$.each(stMatchSets, function (i, value) {
|
// increase the cache size
|
options.cacheLength++;
|
// add to the cache
|
add(i, value);
|
});
|
}
|
|
// populate any existing data
|
setTimeout(populate, 25);
|
|
function flush() {
|
data = {};
|
length = 0;
|
}
|
|
return {
|
flush: flush,
|
add: add,
|
populate: populate,
|
load: function (q) {
|
if (!options.cacheLength || !length)
|
return null;
|
/*
|
* if dealing w/local data and matchContains than we must make sure
|
* to loop through all the data collections looking for matches
|
*/
|
if (!options.url && options.matchContains) {
|
// track all matches
|
var csub = [];
|
// loop through all the data grids for matches
|
for (var k in data) {
|
// don't search through the stMatchSets[""] (minChars: 0) cache
|
// this prevents duplicates
|
if (k.length > 0) {
|
var c = data[k];
|
$.each(c, function (i, x) {
|
// if we've got a match, add it to the array
|
if (matchSubset(x.value, q)) {
|
csub.push(x);
|
}
|
});
|
}
|
}
|
return csub;
|
} else
|
// if the exact item exists, use it
|
if (data[q]) {
|
return data[q];
|
} else
|
if (options.matchSubset) {
|
for (var i = q.length - 1; i >= options.minChars; i--) {
|
var c = data[q.substr(0, i)];
|
if (c) {
|
var csub = [];
|
$.each(c, function (i, x) {
|
if (matchSubset(x.value, q)) {
|
csub[csub.length] = x;
|
}
|
});
|
return csub;
|
}
|
}
|
}
|
return null;
|
}
|
};
|
};
|
|
$.Autocompleter.Select = function (options, input, select, config) {
|
var CLASSES = {
|
ACTIVE: "ac_over"
|
};
|
|
var listItems,
|
active = -1,
|
data,
|
term = "",
|
needsInit = true,
|
element,
|
list;
|
|
// Create results
|
function init() {
|
if (!needsInit)
|
return;
|
element = $("<div/>")
|
.hide()
|
.addClass(options.resultsClass)
|
.css("position", "absolute")
|
.appendTo(document.body);
|
|
list = $("<ul/>").appendTo(element).mouseover(function (event) {
|
if (target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') {
|
active = $("li[name='row']", list).removeClass(CLASSES.ACTIVE).index(target(event));
|
if ($(target(event)).attr("name") == "row") {
|
$(target(event)).addClass(CLASSES.ACTIVE);
|
}
|
|
}
|
}).click(function (event) {
|
if ($(target(event)).attr("name") == "row") {
|
$(target(event)).addClass(CLASSES.ACTIVE);
|
}
|
select();
|
// TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus
|
input.focus();
|
return false;
|
}).mousedown(function () {
|
config.mouseDownOnSelect = true;
|
}).mouseup(function () {
|
config.mouseDownOnSelect = false;
|
});
|
|
if (options.width > 0)
|
element.css("width", options.width);
|
|
needsInit = false;
|
}
|
|
function target(event) {
|
var element = event.target;
|
while (element && element.tagName != "LI")
|
element = element.parentNode;
|
// more fun with IE, sometimes event.target is empty, just ignore it then
|
if (!element)
|
return [];
|
return element;
|
}
|
//移动选择
|
function moveSelect(step) {
|
listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE);
|
movePosition(step);
|
var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE);
|
if (options.scroll) {
|
var offset = 0;
|
listItems.slice(0, active).each(function () {
|
offset += this.offsetHeight;
|
});
|
if ((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) {
|
list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight());
|
} else if (offset < list.scrollTop()) {
|
list.scrollTop(offset);
|
}
|
}
|
};
|
//移动位置
|
function movePosition(step) {
|
active += step;
|
if (active < 0) {
|
active = listItems.size() - 1;
|
} else if (active >= listItems.size()) {
|
active = 0;
|
}
|
}
|
//限制列表的最大数
|
function limitNumberOfItems(available) {
|
return options.max && options.max < available
|
? options.max
|
: available;
|
}
|
|
function fillList() {
|
list.empty();
|
var max = limitNumberOfItems(data.length);
|
$("<dt/>").html("<table width='300px' class='tableTitle'><tr><td align='center' width='100px'>物料编号</td><td align='center' width='100px'>物料名称</td><td align='center' width='100px'>BOM构建方式</td></tr></table>").appendTo(list)[0];
|
|
for (var i = 0; i < max; i++) {
|
if (!data[i])
|
continue;
|
var formatted = options.formatItem(data[i].data, i + 1, max, data[i].value, term);
|
if (formatted === false)
|
continue;
|
var li = $("<li name='row' />").html(options.highlight(formatted, term)).addClass(i % 2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0];
|
$.data(li, "ac_data", data[i]);
|
}
|
|
listItems = list.find("li[name='row']");
|
if (options.selectFirst) {
|
listItems.slice(0, 1).addClass(CLASSES.ACTIVE);
|
active = 0;
|
}
|
// apply bgiframe if available
|
if ($.fn.bgiframe)
|
list.bgiframe();
|
}
|
|
return {
|
display: function (d, q) {
|
init();
|
data = d;
|
term = q;
|
fillList();
|
},
|
next: function () {
|
moveSelect(1);
|
},
|
prev: function () {
|
moveSelect(-1);
|
},
|
pageUp: function () {
|
if (active != 0 && active - 8 < 0) {
|
moveSelect(-active);
|
} else {
|
moveSelect(-8);
|
}
|
},
|
pageDown: function () {
|
if (active != listItems.size() - 1 && active + 8 > listItems.size()) {
|
moveSelect(listItems.size() - 1 - active);
|
} else {
|
moveSelect(8);
|
}
|
},
|
hide: function () {
|
element && element.hide();
|
listItems && listItems.removeClass(CLASSES.ACTIVE);
|
active = -1;
|
},
|
visible: function () {
|
return element && element.is(":visible");
|
},
|
current: function () {
|
return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]);
|
},
|
show: function () {
|
var offset = $(input).offset();
|
element.css({
|
width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(),
|
top: offset.top + input.offsetHeight,
|
left: offset.left
|
}).show();
|
if (options.scroll) {
|
list.scrollTop(0);
|
list.css({
|
maxHeight: options.scrollHeight,
|
overflow: 'auto'
|
});
|
|
if ($.browser.msie && typeof document.body.style.maxHeight === "undefined") {
|
var listHeight = 0;
|
listItems.each(function () {
|
listHeight += this.offsetHeight;
|
});
|
var scrollbarsVisible = listHeight > options.scrollHeight;
|
list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight);
|
if (!scrollbarsVisible) {
|
// IE doesn't recalculate width when scrollbar disappears
|
listItems.width(list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")));
|
}
|
}
|
|
}
|
},
|
selected: function () {
|
var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE);
|
return selected && selected.length && $.data(selected[0], "ac_data");
|
},
|
emptyList: function () {
|
list && list.empty();
|
},
|
unbind: function () {
|
element && element.remove();
|
}
|
};
|
};
|
|
$.Autocompleter.Selection = function (field, start, end) {
|
if (field.createTextRange) {
|
var selRange = field.createTextRange();
|
selRange.collapse(true);
|
selRange.moveStart("character", start);
|
selRange.moveEnd("character", end);
|
selRange.select();
|
} else if (field.setSelectionRange) {
|
field.setSelectionRange(start, end);
|
} else {
|
if (field.selectionStart) {
|
field.selectionStart = start;
|
field.selectionEnd = end;
|
}
|
}
|
field.focus();
|
};
|
|
})(jQuery);
|
