GRIDVIEW WITH TREEVIEW AND CALLBACK

/*
function TreeViewButtonReceiveData(arg, context) {
    if (context.firstChild == null) {
        context.value = arg;
    }
    else {
        context.firstChild.nodeValue = arg;
    }
}*/

function Test111() {
    alert('ca marche');
}

function TreeViewButtonReceiveData(arg, context) {
    var index = parseInt(arg);
    index++;
    var imageColumn = 0;
    var disp = '';
    var collapse = false;

    //ce n'est pas un plus ou un moins on ne traite pas
    if (context.rows[index].cells[imageColumn].firstChild.src != plus &&
            context.rows[index].cells[imageColumn].firstChild.src != minus)
        return;

    if (context.rows[index].cells[imageColumn].firstChild.src == plus) {
        disp = 'inline';
        context.rows[index].cells[imageColumn].firstChild.src = minus;
        collapse = false;
    }
    else {
        disp = 'none';
        context.rows[index].cells[imageColumn].firstChild.src = plus;
        collapse = true;
    }

    var level = parseInt(context.rows[index].cells[levelColumn].innerText);
    for (var i = index + 1; i < context.rows.length; i++) {

        var currentRow = context.rows[i];

        if (parseInt(currentRow.cells[levelColumn].innerText) <= level
               || parseInt(currentRow.cells[levelColumn].innerText) == 0) {
            break;
        }

        processRow(currentRow, level, collapse, plus, minus, imageColumn, levelColumn, expandableColumn);

    }
}

function processRow(currentRow, level, collapse, imgPlus, imgMinus, imgColmun, levelColumn, expandableColumn) {
    if (collapse == false) {//on extend
        if (parseInt(currentRow.cells[levelColumn].innerText) == level + 1) {
            if (currentRow.cells[expandableColumn].innerText == "True") {
                //on met un plus
                currentRow.cells[imgColmun].firstChild.src = imgPlus;
                currentRow.cells[imgColmun].firstChild.style.display = 'inline';
                currentRow.cells[imgColmun].firstChild.style.visibility = 'visible';
            }
            else {//on rend la ligne simplement visible
                currentRow.cells[imgColmun].firstChild.style.display = 'inline';
                currentRow.cells[imgColmun].firstChild.style.visibility = 'visible';
            }
            currentRow.style.display = 'inline';
        }
    }
    else {//collapse
        if (parseInt(currentRow.cells[levelColumn].innerText) >= level + 1) {
            if (currentRow.cells[imgColmun].firstChild.src == imgPlus)
                currentRow.cells[imgColmun].firstChild.src = imgMinus;
            currentRow.cells[imgColmun].firstChild.style.display = 'none';
            currentRow.style.display = 'none';
        }
    }
}