Javascript - get current brush shape name

var w = new Window ("dialog", "Super Panel", undefined, {closeButton: true});
w.preferredSize = [150, 50];
w.alignChildren = [ "left", "fill"];
w.orientation = "row";

var btnGet = w.add ("button", undefined, "Get");
btnGet.onClick = function () { try{
    var ref = new ActionReference();
    var BrshPnlMode;
    ref.putEnumerated( charIDToTypeID("capp"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );
    var applicationDesc = executeActionGet(ref);
    var panelList = applicationDesc.getList(stringIDToTypeID('panelList'));
    for (var m = 0; m < panelList.count; m++) {
    var thisPanelDesc = panelList.getObjectValue(m);
    if (thisPanelDesc.getString(stringIDToTypeID("name")) == "Brush Settings") {
        if (thisPanelDesc.getBoolean(stringIDToTypeID("visible")) == false) { 
                var desc1 = new ActionDescriptor();
                var ref1 = new ActionReference();
                ref1.putEnumerated(charIDToTypeID('Mn  '), charIDToTypeID('MnIt'), charIDToTypeID('TglB'));
                desc1.putReference(stringIDToTypeID('null'), ref1);
                executeAction(charIDToTypeID('slct'), desc1, DialogModes.NO);
                BrshPnlMode = false;
            }
            else {
                BrshPnlMode = true;
            }
        };
    };

    sTT = stringIDToTypeID; 
    brsh = sTT('brush');
    (ref1 = new ActionReference()).putClass(sTT('brush'));
    (dsc = new ActionDescriptor()).putReference(sTT('null'), ref1), dsc.putString(sTT('name'), 'brsh');
    (ref2 = new ActionReference()).putProperty(sTT('property'), sTT('currentToolOptions'))
    ref2.putClass(sTT('application')), dsc.putReference(sTT('using'), ref2)
    executeAction(sTT('make'), dsc); (ref = new ActionReference())
    .putProperty(sTT('property'), sTT('brush'))
    ref.putClass(sTT('application'));

    brshs = eval('('+executeActionGet(ref).getString(brsh)+')').brushes;

    while(brshs.length) {
        if (brshs.pop().name == 'brsh') {
            dsc = new ActionDescriptor(); (ref = new ActionReference())
            .putEnumerated(sTT('brush'), sTT('ordinal'), sTT('targetEnum'))
            dsc.putReference(sTT('null'), ref), executeAction(sTT('delete'), dsc);
            (ref = new ActionReference()).putName(sTT('brush'), nme = brshs.pop().name);
            (dsc = new ActionDescriptor()).putReference(sTT('null'), ref)
            executeAction(sTT('select'), dsc), activeDocument.activeLayer.name = nme; break
        }
    }

    if (BrshPnlMode == false) { 
        executeAction(charIDToTypeID('slct'), desc1, DialogModes.NO);
    }
}catch(e){alert("No brush found");}finally{w.close ();}}

var btnSet = w.add ("button", undefined, "Set");
    btnSet.onClick = function () {try{
        var V1 = new ActionDescriptor();
        var V2 = new ActionReference();
        V2.putName(charIDToTypeID("Brsh"), activeDocument.activeLayer.name);
        V1.putReference(charIDToTypeID("null"), V2);
        executeAction(charIDToTypeID("slct"), V1, DialogModes.NO)
    }catch(e){alert("No brush found");}finally{w.close ();}}

w.show();

Amazing, Thank you so much !!

It's working well, excepted when the brush is on a folder. Do you know the reason why ?

As I understand it, you want to make the name of the current layer contain the name of the brush that was used when drawing it. In this case, you may want to follow the brush selection event:

/** Script renames current layer to brush preset's name
 * Usage:
 * - save script in file
 * - first run: event listener enabled
 * - next run: event listener disabled
 */

#target photoshop
var s2t = stringIDToTypeID,
    t2s = typeIDToStringID;
try {
    var target = t2s(arguments[0].getReference(s2t('null')).getDesiredClass());
    if (target == 'brush') {
        (r = new ActionReference()).putEnumerated(s2t('layer'), s2t('ordinal'), s2t('targetEnum'));
        (d = new ActionDescriptor()).putReference(s2t('target'), r);
        (d1 = new ActionDescriptor()).putString(s2t('name'), arguments[0].getReference(s2t('null')).getName());
        d.putObject(s2t('to'), s2t('layer'), d1);
        executeAction(s2t('set'), d, DialogModes.NO);
    }
} catch (e) {}
if (!target) {
    app.notifiersEnabled = true
    var f = File($.fileName),
        deleted;
    for (var i = 0; i < app.notifiers.length; i++) {
        var ntf = app.notifiers[i]
        if (ntf.eventFile.name == f.name) { ntf.remove(); i--; deleted = true }
    }
    if (deleted) {
        alert('event listening disabled!')
    } else {
        app.notifiers.add('slct', f)
        alert('event listening enabled!')
    }
}

sTT = stringIDToTypeID, brsh = sTT('brush');
(ref = new ActionReference()).putProperty(sTT('property'), brsh)
ref.putClass(sTT('application')); eval('(' + executeActionGet(ref)
.getString(brsh) + ')').brushes[0].children[0].name