mirror of
https://github.com/jquery/jquery-ui.git
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445 lines
11 KiB
JavaScript
445 lines
11 KiB
JavaScript
/*
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* jQuery UI Autocomplete @VERSION
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*
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* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Autocomplete
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.widget.js
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*/
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(function($) {
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$.widget("ui.autocomplete", {
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options: {
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minLength: 1,
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delay: 300
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},
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_create: function() {
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var self = this;
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this.element
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.addClass("ui-autocomplete ui-widget ui-widget-content ui-corner-all")
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.attr("autocomplete", "off")
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// TODO verify these actually work as intended
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.attr({
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role: "textbox",
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"aria-autocomplete": "list",
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"aria-haspopup": "true"
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})
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.bind("keydown.autocomplete", function(event) {
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var keyCode = $.ui.keyCode;
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switch(event.keyCode) {
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case keyCode.PAGE_UP:
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self._move("previousPage", event);
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break;
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case keyCode.PAGE_DOWN:
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self._move("nextPage", event);
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break;
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case keyCode.UP:
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self._move("previous", event);
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// prevent moving cursor to beginning of text field in some browsers
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event.preventDefault();
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break;
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case keyCode.DOWN:
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self._move("next", event);
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// prevent moving cursor to end of text field in some browsers
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event.preventDefault();
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break;
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case keyCode.ENTER:
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// when menu is open or has focus
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if (self.menu && self.menu.active) {
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event.preventDefault();
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}
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case keyCode.TAB:
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if (!self.menu || !self.menu.active) {
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return;
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}
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self.menu.select();
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break;
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case keyCode.ESCAPE:
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self.element.val(self.term);
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self.close(event);
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break;
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case 16:
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case 17:
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case 18:
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// ignore metakeys (shift, ctrl, alt)
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break;
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default:
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// keypress is triggered before the input value is changed
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clearTimeout(self.searching);
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self.searching = setTimeout(function() {
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self.search(null, event);
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}, self.options.delay);
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break;
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}
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})
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.bind("focus.autocomplete", function() {
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self.previous = self.element.val();
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})
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.bind("blur.autocomplete", function(event) {
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clearTimeout(self.searching);
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// clicks on the menu (or a button to trigger a search) will cause a blur event
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// TODO try to implement this without a timeout, see clearTimeout in search()
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self.closing = setTimeout(function() {
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self.close(event);
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}, 150);
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});
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this._initSource();
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this.response = function() {
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return self._response.apply(self, arguments);
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};
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},
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destroy: function() {
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this.element
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.removeClass("ui-autocomplete ui-widget ui-widget-content ui-corner-all")
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.removeAttr("autocomplete")
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.removeAttr("role")
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.removeAttr("aria-autocomplete")
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.removeAttr("aria-haspopup");
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if (this.menu) {
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this.menu.element.remove();
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}
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$.Widget.prototype.destroy.call(this);
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},
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_setOption: function(key) {
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$.Widget.prototype._setOption.apply(this, arguments);
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if (key == "source") {
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this._initSource();
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}
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},
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_initSource: function() {
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if ($.isArray(this.options.source)) {
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var array = this.options.source;
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this.source = function(request, response) {
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// escape regex characters
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var matcher = new RegExp($.ui.autocomplete.escapeRegex(request.term), "i");
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response($.grep(array, function(value) {
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return matcher.test(value.value || value.label || value);
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}));
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};
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} else if (typeof this.options.source == "string") {
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var url = this.options.source;
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this.source = function(request, response) {
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$.getJSON(url, request, response);
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};
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} else {
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this.source = this.options.source;
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}
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},
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search: function(value, event) {
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value = value != null ? value : this.element.val();
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if (value.length < this.options.minLength) {
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return this.close(event);
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}
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clearTimeout(this.closing);
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if (this._trigger("search") === false) {
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return;
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}
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return this._search(value);
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},
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_search: function(value) {
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this.term = this.element
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.addClass("ui-autocomplete-loading")
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// always save the actual value, not the one passed as an argument
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.val();
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this.source({ term: value }, this.response);
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},
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_response: function(content) {
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if (content.length) {
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content = this._normalize(content);
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this._trigger("open");
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this._suggest(content);
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} else {
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this.close();
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}
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this.element.removeClass("ui-autocomplete-loading");
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},
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close: function(event) {
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clearTimeout(this.closing);
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if (this.menu) {
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this._trigger("close", event);
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this.menu.element.remove();
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this.menu = null;
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}
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if (this.previous != this.element.val()) {
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this._trigger("change", event);
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}
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},
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_normalize: function(items) {
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// assume all items have the right format when the first item is complete
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if (items.length && items[0].label && items[0].value) {
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return items;
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}
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return $.map(items, function(item) {
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if (typeof item == "string") {
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return {
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label: item,
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value: item
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};
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}
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return $.extend({
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label: item.label || item.value,
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value: item.value || item.label
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}, item);
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});
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},
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_suggest: function(items) {
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(this.menu && this.menu.element.remove());
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var self = this,
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ul = $("<ul></ul>"),
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parent = this.element.parent();
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$.each(items, function(index, item) {
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$("<li></li>")
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.data("item.autocomplete", item)
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.append("<a>" + item.label + "</a>")
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.appendTo(ul);
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});
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this.menu = ul
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.addClass("ui-autocomplete-menu")
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.appendTo(parent)
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.menu({
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focus: function(event, ui) {
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var item = ui.item.data("item.autocomplete");
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if (false !== self._trigger("focus", null, { item: item })) {
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// use value to match what will end up in the input
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self.element.val(item.value);
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}
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},
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selected: function(event, ui) {
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var item = ui.item.data("item.autocomplete");
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if (false !== self._trigger('select', event, { item: item })) {
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self.element.val( item.value );
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}
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self.close(event);
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self.previous = self.element.val();
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// only trigger when focus was lost (click on menu)
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if (self.element[0] != document.activeElement) {
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self.element.focus();
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}
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}
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})
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// workaround for jQuery bug #5781 http://dev.jquery.com/ticket/5781
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.css({ top: 0, left: 0 })
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.position({
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my: "left top",
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at: "left bottom",
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of: this.element
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})
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.data("menu");
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if (ul.width() <= this.element.width()) {
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ul.width(this.element.width());
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}
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},
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_move: function(direction, event) {
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if (!this.menu) {
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this.search(null, event);
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return;
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}
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if (this.menu.first() && /^previous/.test(direction)
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|| this.menu.last() && /^next/.test(direction)) {
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this.element.val(this.term);
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this.menu.deactivate();
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return;
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}
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this.menu[direction]();
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},
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widget: function() {
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// return empty jQuery object when menu isn't initialized yet
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return this.menu && this.menu.element || $([]);
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}
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});
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$.extend($.ui.autocomplete, {
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escapeRegex: function(value) {
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return value.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1");
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}
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});
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})(jQuery);
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/*
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* jQuery UI Menu (not officially released)
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*
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* This widget isn't yet finished and the API is subject to change. We plan to finish
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* it for the next release. You're welcome to give it a try anyway and give us feedback,
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* as long as you're okay with migrating your code later on. We can help with that, too.
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*
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* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Menu
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*
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* Depends:
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* jquery.ui.core.js
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* jquery.ui.widget.js
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*/
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(function($) {
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$.widget("ui.menu", {
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_create: function() {
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var self = this;
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this.element
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.addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
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.attr({
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role: "menu",
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"aria-activedescendant": "ui-active-menuitem"
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})
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.click(function(e) {
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// temporary
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e.preventDefault();
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self.select();
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});
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var items = this.element.children("li")
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.addClass("ui-menu-item")
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.attr("role", "menuitem");
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items.children("a")
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.addClass("ui-corner-all")
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.attr("tabindex", -1)
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// mouseenter doesn't work with event delegation
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.mouseenter(function() {
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self.activate($(this).parent());
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});
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},
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activate: function(item) {
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this.deactivate();
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this.active = item.eq(0)
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.children("a")
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.addClass("ui-state-hover")
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.attr("id", "ui-active-menuitem")
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.end();
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this._trigger("focus", null, { item: item });
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if (this.hasScroll()) {
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var offset = item.offset().top - this.element.offset().top,
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scroll = this.element.attr("scrollTop"),
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elementHeight = this.element.height();
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if (offset < 0) {
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this.element.attr("scrollTop", scroll + offset);
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} else if (offset > elementHeight) {
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this.element.attr("scrollTop", scroll + offset - elementHeight + item.height());
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}
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}
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},
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deactivate: function() {
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if (!this.active) { return; }
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this.active.children("a")
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.removeClass("ui-state-hover")
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.removeAttr("id");
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this.active = null;
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},
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next: function() {
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this.move("next", "li:first");
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},
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previous: function() {
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this.move("prev", "li:last");
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},
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first: function() {
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return this.active && !this.active.prev().length;
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},
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last: function() {
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return this.active && !this.active.next().length;
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},
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move: function(direction, edge) {
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if (!this.active) {
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this.activate(this.element.children(edge));
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return;
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}
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var next = this.active[direction]();
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if (next.length) {
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this.activate(next);
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} else {
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this.activate(this.element.children(edge));
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}
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},
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// TODO merge with previousPage
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nextPage: function() {
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if (this.hasScroll()) {
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// TODO merge with no-scroll-else
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if (!this.active || this.last()) {
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this.activate(this.element.children(":first"));
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return;
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}
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var base = this.active.offset().top,
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height = this.element.height(),
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result = this.element.children("li").filter(function() {
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var close = $(this).offset().top - base - height + $(this).height();
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// TODO improve approximation
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return close < 10 && close > -10;
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});
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// TODO try to catch this earlier when scrollTop indicates the last page anyway
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if (!result.length) {
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result = this.element.children(":last");
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}
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this.activate(result);
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} else {
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this.activate(this.element.children(!this.active || this.last() ? ":first" : ":last"));
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}
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},
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// TODO merge with nextPage
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previousPage: function() {
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if (this.hasScroll()) {
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// TODO merge with no-scroll-else
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if (!this.active || this.first()) {
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this.activate(this.element.children(":last"));
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return;
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}
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var base = this.active.offset().top,
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height = this.element.height();
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result = this.element.children("li").filter(function() {
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var close = $(this).offset().top - base + height - $(this).height();
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// TODO improve approximation
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return close < 10 && close > -10;
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});
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// TODO try to catch this earlier when scrollTop indicates the last page anyway
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if (!result.length) {
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result = this.element.children(":first");
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}
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this.activate(result);
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} else {
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this.activate(this.element.children(!this.active || this.first() ? ":last" : ":first"));
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}
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},
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hasScroll: function() {
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return this.element.height() < this.element.attr("scrollHeight");
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},
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select: function() {
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this._trigger("selected", null, { item: this.active });
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}
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});
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})(jQuery); |