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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>
*/
jQuery.fn.dw_qsearch = function (overrides) {
var dw_qsearch = {
output_id: '#qsearch__out',
$inObj: this,
$outObj: null,
timer: null,
curRequest: null,
/**
* initialize the quick search
*
* Attaches the event handlers
*
*/
init: function () {
var do_qsearch;
dw_qsearch.$outObj = jQuery(dw_qsearch.output_id);
// objects found?
if (dw_qsearch.$inObj.length === 0 ||
dw_qsearch.$outObj.length === 0) {
return;
}
// attach eventhandler to search field
do_qsearch = function () {
// abort any previous request
if (dw_qsearch.curRequest != null) {
dw_qsearch.curRequest.abort();
}
var value = dw_qsearch.getSearchterm();
if (value === '') {
dw_qsearch.clear_results();
return;
}
dw_qsearch.curRequest = jQuery.post(
DOKU_BASE + 'lib/exe/ajax.php',
{
call: 'qsearch',
q: encodeURI(value)
},
dw_qsearch.onCompletion,
'html'
);
};
dw_qsearch.$inObj.keyup(
function () {
if (dw_qsearch.timer) {
window.clearTimeout(dw_qsearch.timer);
dw_qsearch.timer = null;
}
dw_qsearch.timer = window.setTimeout(do_qsearch, 500);
}
);
// attach eventhandler to output field
dw_qsearch.$outObj.click(dw_qsearch.clear_results);
},
/**
* Read search term from input
*/
getSearchterm: function() {
return dw_qsearch.$inObj.val();
},
/**
* Empty and hide the output div
*/
clear_results: function () {
dw_qsearch.$outObj.hide();
dw_qsearch.$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) {
var max, $links, too_big;
dw_qsearch.curRequest = null;
if (data === '') {
dw_qsearch.clear_results();
return;
}
dw_qsearch.$outObj
.html(data)
.show()
.css('white-space', 'nowrap');
// disable overflow during shortening
dw_qsearch.$outObj.find('li').css('overflow', 'visible');
$links = dw_qsearch.$outObj.find('a');
max = dw_qsearch.$outObj[0].clientWidth; // maximum width allowed (but take away paddings below)
if (document.documentElement.dir === 'rtl') {
max -= parseInt(dw_qsearch.$outObj.css('padding-left'));
too_big = function (l) {
return l.offsetLeft < 0;
};
} else {
max -= parseInt(dw_qsearch.$outObj.css('padding-right'));
too_big = function (l) {
return l.offsetWidth + l.offsetLeft > max;
};
}
$links.each(function () {
var start, length, replace, nsL, nsR, eli, runaway;
if (!too_big(this)) {
return;
}
// make IE's innerText available to W3C conform browsers
if (this.textContent) {
this.__defineGetter__('innerText', function () {
return this.textContent
});
this.__defineSetter__('innerText', function (val) {
this.textContent = val
});
}
nsL = this.innerText.indexOf('(');
nsR = this.innerText.indexOf(')');
eli = 0;
runaway = 0;
while ((nsR - nsL > 3) && too_big(this) && runaway++ < 500) {
if (eli !== 0) {
// elipsis already inserted
if ((eli - nsL) > (nsR - eli)) {
// cut left
start = eli - 2;
length = 2;
} else {
// cut right
start = eli + 1;
length = 1;
}
replace = '';
} else {
// replace middle with ellipsis
start = Math.floor(nsL + ((nsR - nsL) / 2));
length = 1;
replace = '…';
}
this.innerText = substr_replace(this.innerText,
replace, start, length);
eli = this.innerText.indexOf('…');
nsL = this.innerText.indexOf('(');
nsR = this.innerText.indexOf(')');
}
});
// reenable overflow
dw_qsearch.$outObj.find('li').css('overflow', 'hidden').css('text-overflow', 'ellipsis');
}
};
jQuery.extend(dw_qsearch, overrides);
if (!overrides.deferInit) {
dw_qsearch.init();
}
return dw_qsearch;
};
jQuery(function () {
jQuery('#qsearch__in').dw_qsearch({
output_id: '#qsearch__out'
});
});
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