[potkin]

Надо было в handler добавить fireEvent
View:

triggers: {
    foo: {
        cls: 'my-foo-trigger',
        handler: function () {
            console.log('foo');
            this.fireEvent("ontriggerclick", this, event);
        },
    }
}

Controller:

init: function () {
    this.control({
        'viewSysDirConstantsEditDir #SysDirConstantsValue': { "ontriggerclick": this.onTriggerGroupSubNameClick },
    });
},