Display index number on the tabs，add an option to <Preferences/Folder Tabs/options>

Help & Support
2

Try this script. Maybe that's already good enough?

function OnInit(initData) {
    initData.name = 'AddTabIndex';
    initData.version = '2026-05-08';
    initData.url = 'https://resource.dopus.com/t/display-index-number-on-the-tabs-add-an-option-to-preferences-folder-tabs-options/59359/2';
    initData.desc = 'Add index to tab labels';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

function AddIndexToTabs(lst) {
    var cmd = DOpus.Create().Command();

    AddIndex(lst.tabsleft);

    if (lst.dual) {
        AddIndex(lst.tabsright);
    }

    function AddIndex(tabs) {
        for (var i = 0; i < tabs.count; i++) {
            var tab = tabs(i);
            cmd.SetSourceTab(tab);
            cmd.RunCommand('Go TABNAME');
            tab.Update();
            var oldLabel = tab.displayed_label;
            var newLabel = (i + 1) + ':' + oldLabel.replace(/^\d+:/, '');
            if (oldLabel == newLabel) continue;
            cmd.RunCommand('Go TABNAME="' + newLabel + '"');
        }
    }
}

function OnActivateTab(activateTabData) {
    // Called when a tab is activated
    AddIndexToTabs(activateTabData.tab.lister);
}

function OnOpenLister(openListerData) {
    // Called when a new Lister is opened
    if (!openListerData.after) return;
    AddIndexToTabs(openListerData.lister);
}

function OnActivateLister(activateListerData) {
    // Called when a Lister is activated
    if (!activateListerData.active) return;
    AddIndexToTabs(activateListerData.lister);
}

function OnOpenTab(openTabData) {
    // Called when a new tab is opened
    AddIndexToTabs(openTabData.tab.lister);
}


function OnAfterFolderChange(afterFolderChangeData) {
    // Called after a new folder is read in a tab
    AddIndexToTabs(afterFolderChangeData.tab.lister);
}

function OnSourceDestChange(sourceDestData) {
    // Called when the source and destination are changed
    AddIndexToTabs(sourceDestData.tab.lister);
}

Save EventAddTabIndex.js.txt to   ↓

%appdata%\GPSoftware\Directory Opus\Script AddIns

How to use buttons and scripts from this forum