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/**
* Change the position counter of a row.
*
* @param elem Element Node to change.
* @param toPos int New position.
*/
function changePos(elem, toPos)
{
var elemName = elem.getAttribute('data-line')
elem.setAttribute('data-order', toPos);
var hiddenInput = document.querySelector('[name="order_'+ elemName +'"]');
hiddenInput.setAttribute('value', toPos);
}
/**
* Move a row up or down.
*
* @param pos Element Node to move.
* @param move int Move: +1 (down) or -1 (up)
*/
function changeOrder(pos, move)
{
var newpos = parseInt(pos) + move;
var lines = document.querySelectorAll('[data-order="'+ pos +'"]');
var changelines = document.querySelectorAll('[data-order="'+ newpos +'"]');
// If we go down reverse lines to preserve the rows order
if (move > 0) {
lines = [].slice.call(lines).reverse();
}
for (var i = 0 ; i < lines.length ; i++) {
var parent = changelines[0].parentNode;
changePos(lines[i], newpos);
changePos(changelines[i], parseInt(pos));
var changeItem = move < 0 ? changelines[0] : changelines[changelines.length - 1].nextSibling;
parent.insertBefore(lines[i], changeItem);
}
}
/**
* Move a row up in the table.
*
* @param pos int row counter.
*
* @returns false
*/
function orderUp(pos)
{
if (pos == 0) {
return false;
}
changeOrder(pos, -1);
return false;
}
/**
* Move a row down in the table.
*
* @param pos int row counter.
*
* @returns false
*/
function orderDown(pos)
{
var lastpos = document.querySelector('[data-order]:last-child').getAttribute('data-order');
if (pos == lastpos) {
return false;
}
changeOrder(pos, +1);
return false;
}
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