/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Allows moving around inputs/select by Ctrl+arrows
*
* @param object event data
*/

AJAX.registerTeardown('keyhandler.js', function() {
$('#table_columns').die('keydown keyup');
$('table.insertRowTable').die('keydown keyup');
});

AJAX.registerOnload('keyhandler.js', function() {
$('#table_columns').live('keydown keyup', function(event) {
onKeyDownArrowsHandler(event.originalEvent);
});
$('table.insertRowTable').live('keydown keyup', function(event) {
onKeyDownArrowsHandler(event.originalEvent);
});
});

function onKeyDownArrowsHandler(e)
{
e = e||window.event;
var o = (e.srcElement||e.target);
if (!o) {
return;
}
if (o.tagName != "TEXTAREA" && o.tagName != "INPUT" && o.tagName != "SELECT") {
return;
}console.log(e);
if (navigator.userAgent.toLowerCase().indexOf('applewebkit/') != -1) {
if (e.ctrlKey || e.shiftKey || !e.altKey) {
return;
}
} else {
if (!e.ctrlKey || e.shiftKey || e.altKey) {
return;
}
}
if (!o.id) {
return;
}

var pos = o.id.split("_");
if (pos[0] != "field" || typeof pos[2] == "undefined") {
return;
}

var x = pos[2], y = pos[1];

var nO = null;

switch(e.keyCode) {
case 38:
// up
y--;
break;
case 40:
// down
y++;
break;
case 37:
// left
x--;
break;
case 39:
// right
x++;
break;
default:
return;
}

var is_firefox = navigator.userAgent.toLowerCase().indexOf("firefox/") > -1;

// restore selected index, bug #3799
if (is_firefox && e.type == "keyup") {
o.selectedIndex = window["selectedIndex_" + o.id];
}

var id = "field_" + y + "_" + x;
nO = document.getElementById(id);
if (! nO) {
id = "field_" + y + "_" + x + "_0";
nO = document.getElementById(id);
}

// skip non existent fields
if (! nO) {
return;
}
if (e.type == "keydown") {
nO.focus();
if (is_firefox) {
window["selectedIndex_" + nO.id] = nO.selectedIndex;
}
}
if (nO.tagName != 'SELECT') {
nO.select();
}
e.returnValue = false;
}