Disable toolbar button if source path does not exist

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2

You could let an event do the check and set a variable:

function OnInit(initData) {
    initData.name = 'CheckPathAndSetVar';
    initData.version = '2023-08-31';
    initData.url = 'https://resource.dopus.com/t/disable-toolbar-button-if-source-path-does-not-exist/45640';
    initData.default_enable = true;
    initData.min_version = '12.0';
}

function OnAfterFolderChange(afterFolderChangeData) {
    if (!afterFolderChangeData.result) return;

    var tab = afterFolderChangeData.tab;
    if (!tab) return;

    var item = tab.path + '~snapshot';

    if (DOpus.FSUtil().Exists(item)) {
        tab.vars.Set('snapshotVar', 1);
    } else {
        tab.vars.Delete('snapshotVar');
    }
}

The button would start like this:

@disableif:!$tab:snapshotVar

Save EventCheckPathAndSetVar.js.txt to

%appdata%\GPSoftware\Directory Opus\Script AddIns

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