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Add dev version of jsonSuggest

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So that it can be modified. The width argument also works properly in it.
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Wesley Moore 2010-03-19 07:18:44 +11:00
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commit 9d0b51a33e
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/*
* Copyright (c) 2009 Tom Coote (http://www.tomcoote.co.uk)
* This is licensed under GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*jslint eqeqeq: true, browser: true */
/*global jQuery */
/**
* Turn a text box into an auto suggest box which search's and
* displays results specified in a JSON string
*
*
* @name jsonSuggest
* @type jQuery
* @param searchData : [required] Can be one of three things; a JSON string which specified the search data, an object that is representative of a parsed JSON string or a function which returns either of these two things.
* expected object format example; (either as raw object or JSON string)
[
{
id: 1,
text: 'Thomas',
image: 'img/avator1.jpg', // optional
extra: 'www.thomas.com' // optional
},
{
id: 2,
text: 'Frederic',
image: 'img/avator2.jpg', // optional
extra: 'www.freddy.com' // optional
},
{
id: 2,
text: 'James',
image: 'img/avator2.jpg', // optional
extra: 'www.james.com' // optional
}
]
* @param Object settings; [optional]
* minCharacters : [default 1] Number of characters that the input should accept before running a search.
* maxResults: [default undefined] If set then no more results than this number will be found.
* wildCard : [default ''] A character to be used as a match all wildcard when searching. Leaving empty will mean results are matched inside
* strings but if a wildCard is present then results are matched from the beginning of strings.
* caseSensitive : [defautl false] True if the filter search's are to be case sensitive.
* notCharacter : [default !] The character to use at the start of any search text to specify that the results should NOT contain the following text.
* maxHeight : [default 350] This is the maximum height that the results box can reach before scroll bars are shown instead of getting taller.
* highlightMatches: [default true] This will add strong tags around the text that matches the search text in each result.
* onSelect : [default undefined] Function that gets called once a result has been selected, gets passed in the object version of the result as specified in the json string
* ajaxResults : [default false] If this is set to true then you must specify a function as the searchData construction parameter. This is because when this
* settings is true then results are retrieved from an external function each time they are needed instead of being retrieved from the data given on
* contruction. The searchData function must return a JSON string of resulting objects or the object which represents the JSON string. The function is
* passed the following paramenters;
* 1. The search text typed into the input box
* 2. The current wildCard setting
* 3. The current caseSensitive setting
* 4. The current notCharacter setting
* width: [default undefined] If set this will become the width of the results box else the box will be the same width as the input
* @author Tom Coote (www.tomcoote.co.uk)
* @version 1.2.4
*/
(function($){
$.fn.jsonSuggest = function(searchData, settings) {
var defaults = {
minCharacters: 1,
maxResults: undefined,
wildCard: "",
caseSensitive: false,
notCharacter: "!",
maxHeight: 350,
highlightMatches: true,
onSelect: undefined,
ajaxResults: false,
width: undefined
};
settings = $.extend(defaults, settings);
return this.each(function() {
function regexEscape(txt, omit) {
var specials = ['/', '.', '*', '+', '?', '|',
'(', ')', '[', ']', '{', '}', '\\'];
if (omit) {
for (var i=0; i < specials.length; i++) {
if (specials[i] === omit) { specials.splice(i,1); }
}
}
var escapePatt = new RegExp('(\\' + specials.join('|\\') + ')', 'g');
return txt.replace(escapePatt, '\\$1');
}
var obj = $(this),
wildCardPatt = new RegExp(regexEscape(settings.wildCard || ''),'g'),
results = $('<div />'),
currentSelection, pageX, pageY;
// When an item has been selected then update the input box,
// hide the results again and if set, call the onSelect function
function selectResultItem(item) {
obj.val(item.text);
$(results).html('').hide();
if (typeof settings.onSelect === 'function') {
settings.onSelect(item);
}
}
// Used to get rid of the hover class on all result item elements in the
// current set of results and add it only to the given element. We also
// need to set the current selection to the given element here.
function setHoverClass(el) {
$('div.resultItem', results).removeClass('hover');
$(el).addClass('hover');
currentSelection = el;
}
// Build the results HTML based on an array of objects that matched
// the search criteria, highlight the matches if feature is turned on in
// the settings.
function buildResults(resultObjects, sFilterTxt) {
sFilterTxt = "(" + sFilterTxt + ")";
var bOddRow = true, i, iFound = 0,
filterPatt = settings.caseSensitive ? new RegExp(sFilterTxt, "g") : new RegExp(sFilterTxt, "ig");
$(results).html('').hide();
for (i = 0; i < resultObjects.length; i += 1) {
var item = $('<div />'),
text = resultObjects[i].text;
if (settings.highlightMatches === true) {
text = text.replace(filterPatt, "<strong>$1</strong>");
}
$(item).append('<p class="text">' + text + '</p>');
if (typeof resultObjects[i].extra === 'string') {
$(item).append('<p class="extra">' + resultObjects[i].extra + '</p>');
}
if (typeof resultObjects[i].image === 'string') {
$(item).prepend('<img src="' + resultObjects[i].image + '" />').
append('<br style="clear:both;" />');
}
$(item).addClass('resultItem').
addClass((bOddRow) ? 'odd' : 'even').
click(function(n) { return function() {
selectResultItem(resultObjects[n]);
};}(i)).
mouseover(function(el) { return function() {
setHoverClass(el);
};}(item));
$(results).append(item);
bOddRow = !bOddRow;
iFound += 1;
if (typeof settings.maxResults === 'number' && iFound >= settings.maxResults) {
break;
}
}
if ($('div', results).length > 0) {
currentSelection = undefined;
$(results).show().css('height', 'auto');
if ($(results).height() > settings.maxHeight) {
$(results).css({'overflow': 'auto', 'height': settings.maxHeight + 'px'});
}
}
}
// Prepare the search string based on the settings for this plugin,
// run it against each item in the searchData and display any
// results on the page allowing selection by the user.
function runSuggest(e) {
if (this.value.length < settings.minCharacters) {
$(results).html('').hide();
return false;
}
var resultObjects = [],
sFilterTxt = (!settings.wildCard) ? regexEscape(this.value) : regexEscape(this.value, settings.wildCard).replace(wildCardPatt, '.*'),
bMatch = true,
filterPatt, i;
if (settings.notCharacter && sFilterTxt.indexOf(settings.notCharacter) === 0) {
sFilterTxt = sFilterTxt.substr(settings.notCharacter.length,sFilterTxt.length);
if (sFilterTxt.length > 0) { bMatch = false; }
}
sFilterTxt = sFilterTxt || '.*';
sFilterTxt = settings.wildCard ? '^' + sFilterTxt : sFilterTxt;
filterPatt = settings.caseSensitive ? new RegExp(sFilterTxt) : new RegExp(sFilterTxt,"i");
// Get the results from the correct place. If settings.ajaxResults then results are retrieved from
// an external function each time they are needed else they are retrieved from the data
// given on contruction.
if (settings.ajaxResults === true) {
resultObjects = searchData(this.value, settings.wildCard,
settings.caseSensitive,
settings.notCharacter);
if (typeof resultObjects === 'string') {
resultObjects = JSON.parse(resultObjects);
}
}
else {
// Look for the required match against each single search data item. When the not
// character is used we are looking for a false match.
for (i = 0; i < searchData.length; i += 1) {
if (filterPatt.test(searchData[i].text) === bMatch) {
resultObjects.push(searchData[i]);
}
}
}
buildResults(resultObjects, sFilterTxt);
}
// To call specific actions based on the keys pressed in the input
// box. Special keys are up, down and return. All other keys
// act as normal.
function keyListener(e) {
switch (e.keyCode) {
case 13: // return key
$(currentSelection).trigger('click');
return false;
case 40: // down key
if (typeof currentSelection === 'undefined') {
currentSelection = $('div.resultItem:first', results).get(0);
}
else {
currentSelection = $(currentSelection).next().get(0);
}
setHoverClass(currentSelection);
if (currentSelection) {
$(results).scrollTop(currentSelection.offsetTop);
}
return false;
case 38: // up key
if (typeof currentSelection === 'undefined') {
currentSelection = $('div.resultItem:last', results).get(0);
}
else {
currentSelection = $(currentSelection).prev().get(0);
}
setHoverClass(currentSelection);
if (currentSelection) {
$(results).scrollTop(currentSelection.offsetTop);
}
return false;
default:
runSuggest.apply(this, [e]);
}
}
// Prepare the input box to show suggest results by adding in the events
// that will initiate the search and placing the element on the page
// that will show the results.
$(results).addClass('jsonSuggestResults').
css({
'top': (obj.position().top + obj.height() + 5) + 'px',
'left': obj.position().left + 'px',
'width': settings.width || ((obj.width() + 5) + 'px')
}).hide();
obj.after(results).
keyup(keyListener).
blur(function(e) {
// We need to make sure we don't hide the result set
// if the input blur event is called because of clicking on
// a result item.
var resPos = $(results).offset();
resPos.bottom = resPos.top + $(results).height();
resPos.right = resPos.left + $(results).width();
if (pageY < resPos.top || pageY > resPos.bottom || pageX < resPos.left || pageX > resPos.right) {
$(results).hide();
}
}).
focus(function(e) {
$(results).css({
'top': (obj.position().top + obj.height() + 5) + 'px',
'left': obj.position().left + 'px'
});
if ($('div', results).length > 0) {
$(results).show();
}
}).
attr('autocomplete', 'off');
$().mousemove(function(e) {
pageX = e.pageX;
pageY = e.pageY;
});
// Opera doesn't seem to assign a keyCode for the down
// key on the keyup event. why?
if ($.browser.opera) {
obj.keydown(function(e) {
if (e.keyCode === 40) { // up key
return keyListener(e);
}
});
}
// Escape the not character if present so that it doesn't act in the regular expression
settings.notCharacter = regexEscape(settings.notCharacter || '');
// We need to get the javascript array type data from the searchData setting.
// Setting can either be a string, already an array or a function that returns one
// of those things. We only get this data if it isn't being provided using ajax on
// each search
if (!settings.ajaxResults) {
if (typeof searchData === 'function') {
searchData = searchData();
}
if (typeof searchData === 'string') {
searchData = JSON.parse(searchData);
}
}
});
};
})(jQuery);