private void checkEnableBtn()	{
		this.btnAjouter.setEnabled(this.tfName.getText().length() > 0 && this.cbType.getSelectedItem() != null && this.position != null);
		//this.btnPreview.setEnabled(this.tfName.getText().length() > 0 && this.cbType.getSelectedItem() != null && this.position != null);
	}