documize/gui/app/templates/components/ui/ui-dialog.hbs

<div id="{{contentId}}" class="modal" tabindex="-1" role="dialog">
	<div class="modal-dialog {{size}}" role="document">
		<div class="modal-content">
			<div class="modal-header">{{title}}</div>
			<div class="modal-body">
				<form onsubmit={{action 'onAction'}}>
					 {{yield}}
				</form>
			</div>
			<div class="modal-footer">
				<button type="button" class="btn btn-outline-secondary" data-dismiss="modal" {{action 'onCancel'}}>{{cancelCaption}}</button>
				<button type="button" class="btn {{buttonType}}" onclick={{action 'onAction'}}>{{confirmCaption}}</button>
			</div>
		</div>
	</div>
</div>