iTop/templates/base/layouts/dashlet-panel/layout.js.twig

(() => {
    const oDashletEntries = document.querySelectorAll('#{{ oUIBlock.GetId() }} .ibo-dashlet-entry');
    $('#{{ oUIBlock.GetId() }} .ibo-dashlet-entry').on('click', (event) => {
        const sDashletClass = event.currentTarget.getAttribute('data-dashlet-class');
        const oDashboard = document.querySelector('ibo-dashboard');
        oDashboard.AddNewDashlet(sDashletClass,
                {},
                {
                    'minW': event.currentTarget.getAttribute('data-min-width'),
                    'minH': event.currentTarget.getAttribute('data-min-height'),
                    'w': event.currentTarget.getAttribute('data-preferred-width'),
                    'h': event.currentTarget.getAttribute('data-preferred-height')
                }
        );
    });
})();