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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>
*/
var ajax_quicksearch = {
inObj: null,
outObj: null,
sackObj: null,
delay: null,
init: function(inID, outID) {
this.inObj = $(inID);
this.outObj = $(outID);
// objects found?
if (this.inObj === null) return;
if (this.outObj === null) return;
// prepare AJAX
this.sackObj = new sack(DOKU_BASE + 'lib/exe/ajax.php');
this.sackObj.AjaxFailedAlert = '';
this.sackObj.encodeURIString = false;
this.sackObj.onCompletion = ajax_quicksearch.onCompletion;
// attach eventhandler to search field
this.delay = new Delay(function () {
ajax_quicksearch.clear_results();
var value = ajax_quicksearch.inObj.value;
if(value === ''){ return; }
ajax_quicksearch.sackObj.runAJAX('call=qsearch&q=' + encodeURI(value));
});
addEvent(this.inObj, 'keyup', function () {
ajax_quicksearch.clear_results();
ajax_quicksearch.delay.start();
});
// attach eventhandler to output field
addEvent(this.outObj, 'click', function () {
ajax_quicksearch.outObj.style.display = 'none';
});
},
clear_results: function(){
ajax_quicksearch.outObj.style.display = 'none';
ajax_quicksearch.outObj.innerHTML = '';
},
onCompletion: function() {
var data = this.response; // 'this' is sack context
if (data === '') { return; }
var outObj = ajax_quicksearch.outObj;
outObj.innerHTML = data;
outObj.style.display = 'block';
outObj.style['white-space'] = 'nowrap';
// shorten namespaces if too long
var width = outObj.clientWidth;
var links = outObj.getElementsByTagName('a');
for(var i=0; i<links.length; i++){
// 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 = links[i].innerText.indexOf('(');
var nsR = links[i].innerText.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
links[i].innerText = links[i].innerText.substring(0,eli-2)+
links[i].innerText.substring(eli);
}else{
// cut right
links[i].innerText = links[i].innerText.substring(0,eli+1)+
links[i].innerText.substring(eli+2);
}
}else{
// replace middle with ellipsis
var mid = Math.floor( nsL + ((nsR-nsL)/2) );
links[i].innerText = links[i].innerText.substring(0,mid)+'…'+
links[i].innerText.substring(mid+1);
}
eli = links[i].innerText.indexOf('…');
nsL = links[i].innerText.indexOf('(');
nsR = links[i].innerText.indexOf(')');
}
}
}
};
addInitEvent(function(){
ajax_quicksearch.init('qsearch__in','qsearch__out');
});
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