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path: root/assets/default/js/plugins-admin.js
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/** @licstart  The following is the entire license notice for the
 *  JavaScript code in this page.
 *
 *   Copyright: (c) 2011-2015 Sébastien SAUVAGE <sebsauvage@sebsauvage.net>
 *              (c) 2011-2017 The Shaarli Community, see AUTHORS
 *
 *   This software is provided 'as-is', without any express or implied warranty.
 *   In no event will the authors be held liable for any damages arising from
 *   the use of this software.
 *
 *   Permission is granted to anyone to use this software for any purpose,
 *   including commercial applications, and to alter it and redistribute it
 *   freely, subject to the following restrictions:
 *
 *   1. The origin of this software must not be misrepresented; you must not
 *   claim that you wrote the original software. If you use this software
 *   in a product, an acknowledgment in the product documentation would
 *   be appreciated but is not required.
 *
 *   2. Altered source versions must be plainly marked as such, and must
 *   not be misrepresented as being the original software.
 *
 *   3. This notice may not be removed or altered from any source distribution.
 *
 *  @licend  The above is the entire license notice
 *  for the JavaScript code in this page.
 */

/**
 * 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;
}