Rinjae
721 lines
23 KiB
JavaScript
721 lines
23 KiB
JavaScript
/**
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* JQuery Searchable DropDown Plugin
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*
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* @required jQuery 1.3.x or above
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* @author Sascha Woo <xhaggi@users.sourceforge.net>
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* $Id: jquery.searchabledropdown.js 53 2012-11-22 08:48:14Z xhaggi $
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*
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* Copyright (c) 2012 xhaggi
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* https://sourceforge.net/projects/jsearchdropdown/
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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(function($) {
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// register plugin
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var plugin = register("searchable");
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// defaults
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plugin.defaults = {
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maxListSize: 100,
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maxMultiMatch: 50,
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exactMatch: false,
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wildcards: true,
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ignoreCase: true,
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warnMultiMatch: "top {0} matches ...",
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warnNoMatch: "no matches ...",
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latency: 200,
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zIndex: "auto"
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};
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/**
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* Execute function
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* element-specific code here
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* @param {Options} settings Settings
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*/
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plugin.execute = function(settings, zindex) {
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var timer = null;
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var searchCache = null;
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var search = null;
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// do not attach on IE6 or lower
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if ($.browser.msie && parseInt(jQuery.browser.version) < 7)
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return this;
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// only active select elements with drop down capability
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if (this.nodeName != "SELECT" || this.size > 1)
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return this;
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var self = $(this);
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var storage = {index: -1, options: null}; // holds data for restoring
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var idxAttr = "lang";
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var enabled = false;
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// detecting chrome
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$.browser.chrome = /chrome/.test(navigator.userAgent.toLowerCase());
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if($.browser.chrome) $.browser.safari = false;
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// lets you override the options
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// inside the dom objects class property
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// requires the jQuery metadata plugin
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// <div class="hello {color: 'red'}">ddd</div>
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if ($.meta){
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settings = $.extend({}, options, self.data());
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}
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// objects
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var wrapper = $("<div/>");
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var overlay = $("<div/>");
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var input = $("<input/>");
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var selector = $("<select/>");
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// matching option items
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var topMatchItem = $("<option>"+settings.warnMultiMatch.replace(/\{0\}/g, settings.maxMultiMatch)+"</option>").attr("disabled", "true");
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var noMatchItem = $("<option>"+settings.warnNoMatch+"</option>").attr("disabled", "true");
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var selectorHelper = {
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/**
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* Return DOM options of selector element
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*/
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option: function(idx) {
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return $(selector.get(0).options[idx]);
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},
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/**
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* Returns the selected item of selector element
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*/
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selected: function() {
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return selector.find(":selected");
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},
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/**
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* Get or Set the selectedIndex of the selector element
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* @param {int} idx SelectedIndex
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*/
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selectedIndex: function(idx) {
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if(idx > -1)
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selector.get(0).selectedIndex = idx;
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return selector.get(0).selectedIndex;
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},
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/**
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* Resize selector depends on the parameter size
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* @param {Number} size Size
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*/
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size: function(size) {
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selector.attr("size", Math.max(2, Math.min(size, 20)));
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},
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/**
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* Reset the entries, which can be choose to it's inital state depends on selectedIndex and maxMultiMatch
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*/
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reset: function() {
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// return if selector has data and stored index equal selectedIndex of source select element
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if((self.get(0).selectedIndex-1) == self.data("index"))
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return;
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// calc start and length of iteration
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var idx = self.get(0).selectedIndex;
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var len = self.get(0).length;
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var mc = Math.floor(settings.maxMultiMatch / 2);
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var begin = Math.max(1, (idx - mc));
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var end = Math.min(len, Math.max(settings.maxMultiMatch, (idx + mc)));
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var si = idx - begin;
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// clear selector select element
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selector.empty();
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this.size(end-begin);
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// append options
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for (var i=begin; i < end; i++)
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selector.append($(self.get(0).options[i]).clone().attr(idxAttr, i-1));
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// append top match item if length exceeds
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if(end > settings.maxMultiMatch)
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selector.append(topMatchItem);
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// set selectedIndex of selector
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selector.get(0).selectedIndex = si;
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}
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};
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// draw it
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draw();
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/*
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* EVENT HANDLING
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*/
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var suspendBlur = false;
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overlay.mouseover(function() {
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suspendBlur = true;
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});
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overlay.mouseout(function() {
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suspendBlur = false;
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});
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selector.mouseover(function() {
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suspendBlur = true;
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});
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selector.mouseout(function() {
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suspendBlur = false;
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});
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input.click(function(e) {
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if(!enabled)
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enable(e, true);
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else
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disable(e, true);
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});
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input.blur(function(e) {
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if(!suspendBlur && enabled)
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disable(e, true);
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});
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self.keydown(function(e) {
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if(e.keyCode != 9 && !e.shiftKey && !e.ctrlKey && !e.altKey)
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input.click();
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});
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self.click(function(e) {
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selector.focus();
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});
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selector.click(function(e) {
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if (selectorHelper.selectedIndex() < 0)
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return;
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disable(e);
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});
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selector.focus(function(e) {
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input.focus();
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});
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selector.blur(function(e) {
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if(!suspendBlur)
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disable(e, true);
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});
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selector.mousemove(function(e) {
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// Disabled on opera because of <select> elements always return scrollTop of 0
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// Affects up to Opera 10 beta 1, can be removed if bug is fixed
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// http://www.greywyvern.com/code/opera/bugs/selectScrollTop
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return true; //jun's
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if($.browser.opera && parseFloat(jQuery.browser.version) >= 9.8)
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return true;
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// get font-size of option
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var fs = Math.floor(parseFloat(/([0-9\.]+)px/.exec(selectorHelper.option(0).css("font-size"))));
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// calc line height depends on browser
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var fsdiff = 4;
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if($.browser.opera)
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fsdiff = 2.5;
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if($.browser.safari || $.browser.chrome)
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fsdiff = 3;
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fs += Math.round(fs / fsdiff);
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// set selectedIndex depends on mouse position and line height
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selectorHelper.selectedIndex(Math.floor((e.pageY - selector.offset().top + this.scrollTop) / fs));
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});
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// toggle click event on overlay div
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overlay.click(function(e) {
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input.click();
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});
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// trigger event keyup
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input.keyup(function(e) {
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// break searching while using navigation keys
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if(jQuery.inArray(e.keyCode, new Array(9, 13, 16, 33, 34, 35, 36, 38, 40)) > -1)
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return true;
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// set search text
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search = $.trim(input.val().toLowerCase());
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// if a previous timer is running, stop it
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clearSearchTimer();
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// start new timer
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timer = setTimeout(searching, settings.latency);
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});
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// trigger keydown event for keyboard usage
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input.keydown(function(e) {
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// tab stop
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if(e.keyCode == 9) {
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disable(e);
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}
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// return on shift, ctrl, alt key mode
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if(e.shiftKey || e.ctrlKey || e.altKey)
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return;
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// which key is pressed
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switch(e.keyCode) {
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case 13: // enter
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disable(e);
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self.focus();
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break;
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case 27: // escape
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disable(e, true);
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self.focus();
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break;
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case 33: // pgup
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if (selectorHelper.selectedIndex() - selector.attr("size") > 0) {
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selectorHelper.selectedIndex(selectorHelper.selectedIndex() - selector.attr("size"));
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}
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else {
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selectorHelper.selectedIndex(0);
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}
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synchronize();
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break;
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case 34: // pgdown
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if (selectorHelper.selectedIndex() + selector.attr("size") < selector.get(0).options.length - 1) {
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selectorHelper.selectedIndex(selectorHelper.selectedIndex() + selector.attr("size"));
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}
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else {
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selectorHelper.selectedIndex(selector.get(0).options.length-1);
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}
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synchronize();
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break;
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case 38: // up
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if (selectorHelper.selectedIndex() > 0){
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selectorHelper.selectedIndex(selectorHelper.selectedIndex()-1);
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synchronize();
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}
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break;
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case 40: // down
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if (selectorHelper.selectedIndex() < selector.get(0).options.length - 1){
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selectorHelper.selectedIndex(selectorHelper.selectedIndex()+1);
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synchronize();
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}
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break;
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default:
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return true;
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}
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// we handled the key.stop
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// doing anything with it!
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return false;
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});
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/**
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* Draw the needed elements
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*/
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function draw() {
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// fix some styles
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self.css("text-decoration", "none");
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self.width(self.outerWidth());
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self.height(self.outerHeight());
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// wrapper styles
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wrapper.css("position", "relative");
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wrapper.css("width", self.outerWidth());
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// relative div needs an z-index (related to IE z-index bug)
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if($.browser.msie)
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wrapper.css("z-index", zindex);
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// overlay div to block events of source select element
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overlay.css({
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"position": "absolute",
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"top": 0,
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"left": 0,
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"width": self.outerWidth(),
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"height": self.outerHeight(),
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"background-color": "#FFFFFF",
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"opacity": "0.01"
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});
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// overlay text field for searching capability
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input.attr("type", "text");
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input.hide();
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input.height(self.outerHeight());
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// default styles for text field
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input.css({
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"position": "absolute",
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"top": 0,
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"left": 0,
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"margin": "0px",
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"padding": "0px",
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"outline-style": "none",
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"border-style": "solid",
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"border-bottom-style": "none",
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"border-color": "transparent",
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"background-color": "transparent"
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// "background-color": "red"
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});
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// copy selected styles to text field
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var sty = new Array();
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sty.push("border-left-width");
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sty.push("border-top-width");
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//sty.push("font-family");
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sty.push("font-size");
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sty.push("font-stretch");
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sty.push("font-variant");
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sty.push("font-weight");
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sty.push("color");
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sty.push("text-align");
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sty.push("text-indent");
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sty.push("text-shadow");
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sty.push("text-transform");
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sty.push("padding-left");
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sty.push("padding-top");
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for(var i=0; i < sty.length;i++)
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input.css(sty[i], self.css(sty[i]));
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// adjust search text field
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// IE7
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if($.browser.msie && parseInt(jQuery.browser.version) < 8) {
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input.css("padding", "0px");
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input.css("padding-left", "3px");
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input.css("border-left-width", "2px");
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input.css("border-top-width", "3px");
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}
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// chrome
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else if($.browser.chrome) {
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input.height(self.innerHeight());
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input.css("text-transform", "none");
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input.css("padding-left", parseFloatPx(input.css("padding-left"))+3);
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input.css("padding-top", 2);
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}
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// safari
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else if($.browser.safari) {
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input.height(self.innerHeight());
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input.css("padding-top", 2);
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input.css("padding-left", 3);
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input.css("text-transform", "none");
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}
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// opera
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else if($.browser.opera) {
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input.height(self.innerHeight());
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var pl = parseFloatPx(self.css("padding-left"));
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input.css("padding-left", pl == 1 ? pl+1 : pl);
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input.css("padding-top", 0);
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}
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else if($.browser.mozilla) {
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input.css("padding-top", "0px");
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input.css("border-top", "0px");
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input.css("padding-left", parseFloatPx(self.css("padding-left"))+3);
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}
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// all other browsers
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else {
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input.css("padding-left", parseFloatPx(self.css("padding-left"))+3);
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input.css("padding-top", parseFloatPx(self.css("padding-top"))+1);
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}
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// adjust width of search field
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var offset = parseFloatPx(self.css("padding-left")) + parseFloatPx(self.css("padding-right")) +
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parseFloatPx(self.css("border-left-width")) + parseFloatPx(self.css("border-left-width")) + 23;
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input.width(self.outerWidth() - offset);
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// store css width of source select object then set width
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// to auto to obtain the maximum width depends on the longest entry.
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// this is nessesary to set the width of the selector, because min-width
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// do not work in all browser.
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var w = self.css("width");
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var ow = self.outerWidth();
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self.css("width", "auto");
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ow = ow > self.outerWidth() ? ow : self.outerWidth();
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self.css("width", w);
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// entries selector replacement
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selector.hide();
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selectorHelper.size(self.get(0).length);
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selector.css({
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"position": "absolute",
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"top": self.outerHeight(),
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"left": 0,
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"width": ow,
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"border": "1px solid #333",
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"font-weight": "normal",
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"padding": 0,
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"background-color": self.css("background-color"),
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"text-transform": self.css("text-transform")
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});
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// z-index handling
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var zIndex = /^\d+$/.test(self.css("z-index")) ? self.css("z-index") : 1;
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// if z-index option is defined, use it instead of select element z-index
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if (settings.zIndex && /^\d+$/.test(settings.zIndex))
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zIndex = settings.zIndex;
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overlay.css("z-index", (zIndex).toString(10));
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input.css("z-index", (zIndex+1).toString(10));
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selector.css("z-index", (zIndex+2).toString(10));
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// append to container
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self.wrap(wrapper);
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self.after(overlay);
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self.after(input);
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self.after(selector);
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};
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/**
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* Enable the search facilities
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*
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* @param {Object} e Event
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* @param {boolean} s Show selector
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* @param {boolean} v Verbose enabling
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*/
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function enable(e, s, v) {
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// exit event on disabled select element
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if(self.attr("disabled"))
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return false;
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// prepend empty option
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self.prepend("<option />");
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// set state to enabled
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if(typeof v == "undefined")
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enabled = !enabled;
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// reset selector
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selectorHelper.reset();
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// synchronize select and dropdown replacement
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synchronize();
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// store search result
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store();
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// show selector
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if(s)
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selector.show();
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// show search field
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input.show();
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input.focus();
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input.select();
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// select empty option
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self.get(0).selectedIndex = 0;
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if(typeof e != "undefined")
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e.stopPropagation();
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};
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/**
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* Disable the search facilities
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*
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* @param {Object} e Event
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* @param {boolean} rs Restore last results
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*/
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function disable(e, rs) {
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// set state to disabled
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enabled = false;
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// remove empty option
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self.find(":first").remove();
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// clear running search timer
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clearSearchTimer();
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// hide search field and selector
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input.hide();
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selector.hide();
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// restore last results
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if(typeof rs != "undefined")
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restore();
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// populate changes
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populate();
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if(typeof e != "undefined")
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e.stopPropagation();
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};
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/**
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* Clears running search timer
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*/
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function clearSearchTimer() {
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// clear running timer
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if(timer != null)
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clearTimeout(timer);
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};
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|
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/**
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* Populate changes to select element
|
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*/
|
|
function populate() {
|
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// invalid selectedIndex or disabled elements do not be populate
|
|
if(selectorHelper.selectedIndex() < 0 || selectorHelper.selected().get(0).disabled)
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return;
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|
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// store selectedIndex
|
|
self.get(0).selectedIndex = parseInt(selector.find(":selected").attr(idxAttr));
|
|
|
|
// trigger change event
|
|
self.change();
|
|
|
|
// store selected index
|
|
self.data("index", new Number(self.get(0).selectedIndex));
|
|
};
|
|
|
|
/**
|
|
* Synchronize selected item on dropdown replacement with source select element
|
|
*/
|
|
function synchronize() {
|
|
if(selectorHelper.selectedIndex() > -1 && !selectorHelper.selected().get(0).disabled)
|
|
input.val(selector.find(":selected").text());
|
|
else
|
|
input.val(self.find(":selected").text());
|
|
};
|
|
|
|
/**
|
|
* Stores last results of selector
|
|
*/
|
|
function store() {
|
|
storage.index = selectorHelper.selectedIndex();
|
|
storage.options = new Array();
|
|
for(var i=0;i<selector.get(0).options.length;i++)
|
|
storage.options.push(selector.get(0).options[i]);
|
|
};
|
|
|
|
/**
|
|
* Restores last results of selector previously stored by store function
|
|
*/
|
|
function restore() {
|
|
selector.empty();
|
|
for(var i=0;i<storage.options.length;i++)
|
|
selector.append(storage.options[i]);
|
|
selectorHelper.selectedIndex(storage.index);
|
|
selectorHelper.size(storage.options.length);
|
|
};
|
|
|
|
/**
|
|
* Escape regular expression string
|
|
*
|
|
* @param str String
|
|
* @return escaped regexp string
|
|
*/
|
|
function escapeRegExp(str) {
|
|
var specials = ["/", ".", "*", "+", "?", "|", "(", ")", "[", "]", "{", "}", "\\", "^", "$"];
|
|
var regexp = new RegExp("(\\" + specials.join("|\\") + ")", "g");
|
|
return str.replace(regexp, "\\$1");
|
|
};
|
|
|
|
/**
|
|
* The actual searching gets done here
|
|
*/
|
|
function searching() {
|
|
if (searchCache == search) { // no change ...
|
|
timer = null;
|
|
return;
|
|
}
|
|
|
|
var matches = 0;
|
|
searchCache = search;
|
|
selector.hide();
|
|
selector.empty();
|
|
|
|
// escape regexp characters
|
|
var regexp = escapeRegExp(search);
|
|
// exact match
|
|
if(settings.exactMatch)
|
|
regexp = "^" + regexp;
|
|
// wildcard support
|
|
if(settings.wildcards) {
|
|
regexp = regexp.replace(/\\\*/g, ".*");
|
|
regexp = regexp.replace(/\\\?/g, ".");
|
|
}
|
|
// ignore case sensitive
|
|
var flags = null;
|
|
if(settings.ignoreCase)
|
|
flags = "i";
|
|
|
|
// RegExp object
|
|
search = new RegExp(regexp, flags);
|
|
|
|
// for each item in list
|
|
for(var i=1;i<self.get(0).length && matches < settings.maxMultiMatch;i++){
|
|
// search
|
|
if(search.length == 0 || search.test(self.get(0).options[i].text)){
|
|
var opt = $(self.get(0).options[i]).clone().attr(idxAttr, i-1);
|
|
if(self.data("index") == i)
|
|
opt.text(self.data("text"));
|
|
selector.append(opt);
|
|
matches++;
|
|
}
|
|
}
|
|
|
|
// result actions
|
|
if(matches >= 1){
|
|
selectorHelper.selectedIndex(0);
|
|
}
|
|
else if(matches == 0){
|
|
selector.append(noMatchItem);
|
|
}
|
|
|
|
// append top match item if matches exceeds maxMultiMatch
|
|
if(matches >= settings.maxMultiMatch){
|
|
selector.append(topMatchItem);
|
|
}
|
|
|
|
// resize selector
|
|
selectorHelper.size(matches);
|
|
selector.show();
|
|
timer = null;
|
|
};
|
|
|
|
/**
|
|
* Parse a given pixel size value to a float value
|
|
* @param value Pixel size value
|
|
*/
|
|
function parseFloatPx(value) {
|
|
try {
|
|
value = parseFloat(value.replace(/[\s]*px/, ""));
|
|
if(!isNaN(value))
|
|
return value;
|
|
}
|
|
catch(e) {}
|
|
return 0;
|
|
};
|
|
|
|
return;
|
|
};
|
|
|
|
/**
|
|
* Register plugin under given namespace
|
|
*
|
|
* Plugin Pattern informations
|
|
* The function creates the namespace under jQuery
|
|
* and bind the function to execute the plugin code.
|
|
* The plugin code goes to the plugin.execute function.
|
|
* The defaults can setup under plugin.defaults.
|
|
*
|
|
* @param {String} nsp Namespace for the plugin
|
|
* @return {Object} Plugin object
|
|
*/
|
|
function register(nsp) {
|
|
|
|
// init plugin namespace
|
|
var plugin = $[nsp] = {};
|
|
|
|
// bind function to jQuery fn object
|
|
$.fn[nsp] = function(settings) {
|
|
// extend default settings
|
|
settings = $.extend(plugin.defaults, settings);
|
|
|
|
var elmSize = this.size();
|
|
return this.each(function(index) {
|
|
plugin.execute.call(this, settings, elmSize-index);
|
|
});
|
|
};
|
|
|
|
return plugin;
|
|
};
|
|
|
|
})(jQuery);
|