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/**
* AJAX functions for the pagename quicksearch
*
* @license GPL2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
* @author Adrian Lang <lang@cosmocode.de>
* @author Michal Rezler <m.rezler@centrum.cz>
*/
var ajax_quicksearch = {
inObj: null, // jquery object
outObj: null, // jquery object
delay: null,
/**
* initialize the quick search
*
* Attaches the event handlers
*
* @param input element (JQuery selector/DOM obj)
* @param output element (JQuery selector/DOM obj)
*/
init: function(input, output) {
ajax_quicksearch.inObj = jQuery(input);
ajax_quicksearch.outObj = jQuery(output);
// objects found?
if (ajax_quicksearch.inObj === []) return;
if (ajax_quicksearch.outObj === []) return;
// attach eventhandler to search field
ajax_quicksearch.delay = new Delay(function () {
ajax_quicksearch.clear_results();
var value = ajax_quicksearch.inObj.val();
if(value === ''){ return; }
jQuery.post(
DOKU_BASE + 'lib/exe/ajax.php',
{
call: 'qsearch',
q: encodeURI(value)
},
ajax_quicksearch.onCompletion,
'html'
);
});
ajax_quicksearch.inObj.keyup(
function() {
ajax_quicksearch.clear_results();
ajax_quicksearch.delay.start();
}
);
// attach eventhandler to output field
ajax_quicksearch.outObj.click(
ajax_quicksearch.outObj.hide
);
},
/**
* Empty and hide the output div
*/
clear_results: function(){
ajax_quicksearch.outObj.hide();
ajax_quicksearch.outObj.text('');
},
/**
* Callback. Reformat and display the results.
*
* Namespaces are shortened here to keep the results from overflowing
* or wrapping
*
* @param data The result HTML
*/
onCompletion: function(data) {
if (data === '') { return; }
var outObj = ajax_quicksearch.outObj;
outObj.html(data);
outObj.show();
outObj.css('white-space', 'nowrap');
// shorten namespaces if too long
var width = outObj.clientWidth;
var links = outObj.find('a');
for (var i=0; i<links.length; i++) {
var content = links[i].text;
// maximum allowed width:
var max = width - links[i].offsetLeft;
var isRTL = (document.documentElement.dir == 'rtl');
if(!isRTL && links[i].offsetWidth < max) continue;
if(isRTL && links[i].offsetLeft > 0) continue;
var nsL = content.indexOf('(');
var nsR = content.indexOf(')');
var eli = 0;
var runaway = 0;
while((nsR - nsL > 3) &&
(
(!isRTL && links[i].offsetWidth > max) ||
(isRTL && links[i].offsetLeft < 0)
)
){
if(runaway++ > 500) return; // just in case something went wrong
if(eli){
// elipsis already inserted
if( (eli - nsL) > (nsR - eli) ){
// cut left
content = content.substring(0,eli-2) + content.substring(eli);
}else{
// cut right
content = content.substring(0,eli+1) + content.substring(eli+2);
}
}else{
// replace middle with ellipsis
var mid = Math.floor( nsL + ((nsR-nsL)/2) );
content = content.substring(0,mid)+'…' + content.substring(mid+1);
}
eli = content.indexOf('…');
nsL = content.indexOf('(');
nsR = content.indexOf(')');
}
}
}
};
jQuery(function () {
ajax_quicksearch.init('#qsearch__in','#qsearch__out');
});
|
