SmComboBoxDatasource

    protected void run() {
        MyDialog myDialog = new MyDialog();
        myDialog.showDialog();
    }
    @Override
    public boolean enable() {
        Dataset[] activeDatasets = Application.getActiveApplication().getActiveDatasets();
        return activeDatasets.length > 0 && activeDatasets[0] instanceof DatasetVector;
    }
    public class MyDialog extends SmDialog {
        private JLabel labelDatasource;
        private SmComboBoxDatasource smComboBoxDatasource;
        private JLabel labelDatasetType;
        private SmComboBoxDatasetType smComboBoxDatasetType;
        private JLabel labelDataset;
        private SmComboBoxDataset smComboBoxDataset;
        private JLabel labelFieldInfo;
        private SmComboBoxFieldInfo smComboBoxFieldInfo;
        public MyDialog() {
            this.setSize(new Dimension(300,200));
            initComponents();
            initLayouts();
            initListener();
        }
        private void initComponents() {
            this.labelDatasource = new JLabel("数据源:");
            //数据源下拉控件
            this.smComboBoxDatasource = new SmComboBoxDatasource();
            //设置是否包含只读数据源，此处设置为否
            this.smComboBoxDatasource.setIncludeReadOnly(false);
            //设置是否支持新建数据源，此处未支持
            this.smComboBoxDatasource.setSupportCreate(true);
            //支设置不支持的数据源引擎类型，也可以用setSupportEngineTypes()方法来设置支持的引擎类型，测出设置未不支持内存数据源
            this.smComboBoxDatasource.setUnSupportEngineTypes(EngineType.MEMORY);
            this.labelDatasetType = new JLabel("数据集类型:");
            this.smComboBoxDatasetType = new SmComboBoxDatasetType();
            //设置是否显示“简单数据集”选项，默认不显示
            this.smComboBoxDatasetType.setHasSimpleDataset(true);
            //设置是否显示“所有数据集”选项，默认不显示
            this.smComboBoxDatasetType.setHasAll(false);
            //设置支持的数据集类型，此处设置为点、线、面数据集
            this.smComboBoxDatasetType.setSupportedDatasetTypes(DatasetType.REGION,DatasetType.LINE,DatasetType.POINT);
            this.labelDataset = new JLabel("数据集:");
            //初始化数据集下拉列表控件，也可传入要展示的数据集集合
            this.smComboBoxDataset = new SmComboBoxDataset();
            //根据数据源或数据集集合设置下拉列表中展示的数据集
            this.smComboBoxDataset.setDatasource(this.smComboBoxDatasource.getSelectedDatasource());
            this.smComboBoxDataset.setDatasets(this.smComboBoxDatasource.getSelectedDatasource().getDatasets());
            //设置是否显示未空选项，默认为false
            this.smComboBoxDataset.setSelectNullValue(false);
            //设置下拉选项中支持的数据集类型，此处设置为仅显示点、线、面数据集
            this.smComboBoxDataset.setSupportedDatasetTypes(DatasetType.REGION, DatasetType.LINE, DatasetType.POINT);
            //设置网络数据集是否支持显示子数据集，默认为false
            this.smComboBoxDataset.setSupportedChildDataset(false);
            this.labelFieldInfo =   new JLabel("字段:");
            this.smComboBoxFieldInfo = new SmComboBoxFieldInfo();
            //设置第一项是否为空，默认为false不为空
            this.smComboBoxFieldInfo.setFirstItemEmpty(false);
            //设置是否支持系统字段，默认为true
            this.smComboBoxFieldInfo.setHasSystemField(true);
            //设置下拉选项线是哪一个数据集的字段信息（矢量数据集）
            this.smComboBoxFieldInfo.setDatasetVector((DatasetVector) this.smComboBoxDataset.getSelectedDataset());
            //设置支持的字段类型
            this.smComboBoxFieldInfo.setSupportFieldTypes(FieldType.INT16, FieldType.INT32, FieldType.INT64);
        }
        private void initLayouts() {
            this.setLayout(new GridBagLayout());
            this.add(this.labelDatasource, new GridBagConstraintsHelper(0,0,1,1).setFill(GridBagConstraints.NONE).setWeight(0,0).setInsets(10,10,0,5));
            this.add(this.smComboBoxDatasource, new GridBagConstraintsHelper(1, 0, 1, 1).setFill(GridBagConstraints.HORIZONTAL).setWeight(1, 0).setInsets(10, 10, 0, 5));
            this.add(this.labelDatasetType, new GridBagConstraintsHelper(0,1,1,1).setFill(GridBagConstraints.NONE).setWeight(0,0).setInsets(10,10,0,5));
            this.add(this.smComboBoxDatasetType, new GridBagConstraintsHelper(1,1,1,1).setFill(GridBagConstraints.HORIZONTAL).setWeight(1,0).setInsets(10,10,0,5));
            this.add(this.labelDataset, new GridBagConstraintsHelper(0,2,1,1).setFill(GridBagConstraints.NONE).setWeight(0,0).setInsets(10,10,0,5));
            this.add(this.smComboBoxDataset, new GridBagConstraintsHelper(1,2,1,1).setFill(GridBagConstraints.HORIZONTAL).setWeight(1,0).setInsets(10,10,0,5));
            this.add(this.labelFieldInfo, new GridBagConstraintsHelper(0,3,1,1).setFill(GridBagConstraints.NONE).setWeight(0,0).setInsets(10,10,0,0));
            this.add(this.smComboBoxFieldInfo, new GridBagConstraintsHelper(1,3,1,1).setFill(GridBagConstraints.HORIZONTAL).setWeight(1,0).setInsets(10,10,0,5));
        }
        private void initListener() {
            this.smComboBoxDatasource.addItemListener(new ItemListener() {
                @Override
                public void itemStateChanged(ItemEvent e) {
                    if (e.getStateChange() == ItemEvent.SELECTED) {
                        smComboBoxDataset.setDatasource(smComboBoxDatasource.getSelectedDatasource());
                    }
                }
            });
            this.smComboBoxDatasetType.addItemListener(new ItemListener() {
                @Override
                public void itemStateChanged(ItemEvent e) {
                    if (e.getStateChange() == ItemEvent.SELECTED) {
                        smComboBoxDataset.setSupportedDatasetTypes(smComboBoxDatasetType.getSelectedDatasetTypes());
                    }
                }
            });
            this.smComboBoxDataset.addItemListener(new ItemListener() {
                @Override
                public void itemStateChanged(ItemEvent e) {
                    if (e.getStateChange() == ItemEvent.SELECTED) {
                        smComboBoxFieldInfo.setDatasetVector((DatasetVector) smComboBoxDataset.getSelectedDataset());
                    }
                }
            });
        }
    }