NatTable中具有列组标题的RowSelection

问题描述

我创建了一个Eclipse应用程序，在其中使用单个列标题为NatTable实现了行选择.行选择正常工作.后来，我向应用程序添加了带有列组标题的NatTable.问题来了，单击单元格后行选择不起作用.仅选择单击的单元格.

I created an Eclipse application where I implemented the row selection for the NatTable with a single column header. The row selection works correctly. Later I added a NatTable with a column group header to the application. Here comes problem, after clicking on cell the row selection doesn't work. Only clicked cell is selected.

我在 RowSelectionAction扩展AbstractSelectionAction 类中定义行选择. RowSelectionAction 对象是在类扩展DefaultSelectionBindings 的重写的 configureBodyMouseClickBindings()方法中创建的.在 NatTable.configure()方法期间调用此方法.但是似乎在使用列分组标题创建的NatTable上没有调用 configureBodyMouseClickBindings()方法.

I define the row selection in RowSelectionAction extends AbstractSelectionAction class. RowSelectionAction object is created in overrided configureBodyMouseClickBindings() method of class extends DefaultSelectionBindings. This method is called during NatTable.configure() method. But it seems configureBodyMouseClickBindings() method isn't called at NatTable created with column groupd headers.

以下是使用简单列标题创建NatTable的代码:

Here is code for creating NatTable with simple column header:

private NatTable createTable(Composite parent, List<TableLine> tLines, String[][] propertyNames,
  PropertyToLabels[] propToLabels, TableParams params, TextMatcherEditor<TableLine>editor) {

BodyLayerStack bodyLayerStack =
    new BodyLayerStack(
            tLines,
            new LineDataProviderColumnAccessor(propertyNames[0].length),
            params.getColumnIndicesForRowHeaders());

DataLayer bodyDataLayer = bodyLayerStack.getBodyDataLayer();
Integer[] rowHeights = params.getRowHeights();

if( rowHeights != null && rowHeights.length > 0 ) {
  for( int i = 0; i < rowHeights.length; i++ ) {
    if( rowHeights[i] != null )
      bodyDataLayer.setRowHeightByPosition(i, rowHeights[i]);
  }
}

Integer[] colWidths = params.getColumnWidths();
if( colWidths != null && colWidths.length > 0 ) {
  for( int i = 0; i < colWidths.length; i++ )
    if( colWidths[i] != null )
      bodyDataLayer.setColumnWidthByPosition(i, colWidths[i]);
}

IDataProvider columnHeaderDataProvider =
    new DefaultColumnHeaderDataProvider(propertyNames[0], propToLabels[0].getPropertyToLabels());
DataLayer columnHeaderDataLayer =
    new DefaultColumnHeaderDataLayer(columnHeaderDataProvider);

ILayer columnHeaderLayer =
    new ColumnHeaderLayer(
        columnHeaderDataLayer,
        bodyLayerStack,
        (SelectionLayer)null);

Integer[] hrHeights = params.getHeaderRowHeights();
if( hrHeights != null && hrHeights.length > 0 )
  columnHeaderDataLayer.setRowHeightByPosition(0, hrHeights[0]);

CompositeLayer composite = new CompositeLayer(1, 2);
composite.setChildLayer(GridRegion.COLUMN_HEADER, columnHeaderLayer, 0, 0);
composite.setChildLayer(GridRegion.BODY, bodyLayerStack, 0, 1);

NatTable natTable = new NatTable(parent, composite, false);
natTable.addConfiguration(new DefaultNatTableStyleConfiguration());
natTable.addConfiguration(new ContextMenuConfiguration(natTable));
natTable.addConfiguration(new AbstractRegistryConfiguration() {
  
  @Override
  public void configureRegistry(IConfigRegistry configRegistry) {
    Style cellStyle = new Style();
    cellStyle.setAttributeValue(
            CellStyleAttributes.BACKGROUND_COLOR,
            GUIHelper.COLOR_WIDGET_BACKGROUND);
    configRegistry.registerConfigAttribute(
            CellConfigAttributes.CELL_STYLE, cellStyle,
            DisplayMode.NORMAL, RowHeaderLabel);
  }
});
natTable.configure();

editor.setFilterator(new TextFilterator<TableLine>() {
  @Override
  public void getFilterStrings(List<String> baseList, TableLine element) {
    for( int i = 0; i < element.getLength(); i++ )
      baseList.add("" + element.getObjectByColumn(i));
  }
});
editor.setMode(TextMatcherEditor.REGULAR_EXPRESSION);
bodyLayerStack.getFilterList().setMatcherEditor(editor);

return natTable;}

BodyLayerStack.class内容:

BodyLayerStack.class content:

class BodyLayerStack extends AbstractLayerTransform {

private final FilterList<TableLine> filterList;
private final SelectionLayer selectionLayer;
private final DataLayer bodyDataLayer;
private final IRowDataProvider<TableLine> bodyDataProvider;

public DataLayer getBodyDataLayer() {
  return bodyDataLayer;
}

public SelectionLayer getSelectionLayer() {
  return selectionLayer;
}

public IRowDataProvider<TableLine> getBodyDataProvider() {
  return bodyDataProvider;
}

public BodyLayerStack(List<TableLine> values, IColumnAccessor<TableLine> columnAccessor, Integer[] columnIndicesForRowHeaders) {
    EventList<TableLine> eventList = GlazedLists.eventList(values);
    TransformedList<TableLine, TableLine> rowObjectsGlazedList = GlazedLists.threadSafeList(eventList);

    this.filterList = new FilterList<>(rowObjectsGlazedList);

    this.bodyDataProvider = new ListDataProvider<TableLine>(this.filterList, columnAccessor);
    bodyDataLayer = new DataLayer(this.bodyDataProvider);
    
    ColumnOverrideLabelAccumulator bodyLabelAccumulator = new ColumnOverrideLabelAccumulator(bodyDataLayer);
    bodyDataLayer.setConfigLabelAccumulator(bodyLabelAccumulator);

    if( columnIndicesForRowHeaders != null ) {
      for ( int i = 0; i < columnIndicesForRowHeaders.length; i++ ) {
        bodyLabelAccumulator.registerColumnOverrides(
            columnIndicesForRowHeaders[i],
            RowHeaderLabel);
      }
    }

    GlazedListsEventLayer<TableLine> glazedListsEventLayer =
            new GlazedListsEventLayer<>(bodyDataLayer, this.filterList);

    this.selectionLayer = new SelectionLayer(glazedListsEventLayer, false);
    selectionLayer.setSelectionModel(new RowSelectionModel<TableLine>(selectionLayer, this.bodyDataProvider, new IRowIdAccessor<TableLine>()
    {
      @Override
      public Serializable getRowId(TableLine line)
      {
        return line.getId();
      }
    }));

    selectionLayer.addConfiguration(new DefaultSelectionLayerConfiguration()
    {
      @Override
      protected void addSelectionUIBindings()
      {
        addConfiguration(new SelectionBindings());
      }

      @SuppressWarnings("rawtypes")
      @Override
      protected void addMoveSelectionConfig()
      {
        addConfiguration(new RowOnlySelectionConfiguration());
      }
    });

    ViewportLayer viewportLayer = new ViewportLayer(selectionLayer);
    setUnderlyingLayer(viewportLayer);
}

public FilterList<TableLine> getFilterList() {
    return this.filterList;
}

}

以下是用于创建列组标题NatTable的代码:

Here is code for creating column group header NatTable:

private NatTable createTableWithColumnHeaderGroups(Composite parent, List<TableLine> tLines, TableParams params,
  TextMatcherEditor<TableLine> editor) {
String[][] columnHeaders = params.getColumnHeaders();
if( columnHeaders == null || columnHeaders.length != 2 )
  return null;
String[] propertyNames = new String[columnHeaders[1].length];
PropertyToLabels propToLabels = new PropertyToLabels();
for( int i = 0; i < propertyNames.length; i++ ) {
  propertyNames[i] = String.valueOf(i+1) + "_" + columnHeaders[1][i];
  propToLabels.add(propertyNames[i], columnHeaders[1][i]);
}

BodyLayerStack bodyLayerStack =
    new BodyLayerStack(
            tLines,
            new LineDataProviderColumnAccessor(propertyNames.length),
            params.getColumnIndicesForRowHeaders());

ColumnGroupModel columnGroupModel = new ColumnGroupModel();

IRowDataProvider<TableLine> bodyDataProvider =
    new ListDataProvider<TableLine>(tLines, new LineDataProviderColumnAccessor(propertyNames.length));
ColumnGroupBodyLayerStack bodyLayer =
    new ColumnGroupBodyLayerStack(bodyLayerStack.getBodyDataLayer(), columnGroupModel);

Integer[] rowHeights = params.getRowHeights();
if( rowHeights != null && rowHeights.length > 0 ) {
  for( int i = 0; i < rowHeights.length; i++ ) {
    if( rowHeights[i] != null )
      bodyLayer.doCommand(new RowResizeCommand(bodyLayer, i, rowHeights[i]));
  }
}
Integer[] colWidths = params.getColumnWidths();
if( colWidths != null && colWidths.length > 0 ) {
  for( int i = 0; i < colWidths.length; i++ )
    if( colWidths[i] != null )
      bodyLayer.doCommand(new ColumnResizeCommand(bodyLayer, i, colWidths[i]));
}

// Column header
DefaultColumnHeaderDataProvider defaultColumnHeaderDataProvider =
    new DefaultColumnHeaderDataProvider(propertyNames, propToLabels.getPropertyToLabels());
DefaultColumnHeaderDataLayer columnHeaderDataLayer =
    new DefaultColumnHeaderDataLayer(defaultColumnHeaderDataProvider);
ColumnHeaderLayer columnHeaderLayer =
    new ColumnHeaderLayer(columnHeaderDataLayer, bodyLayer, bodyLayer.getSelectionLayer());
ColumnGroupHeaderLayer columnGroupHeaderLayer =
    new ColumnGroupHeaderLayer(
        columnHeaderLayer,
        bodyLayer.getSelectionLayer(),
        columnGroupModel);

Integer[] hrHeights = params.getHeaderRowHeights();
if( hrHeights != null && hrHeights.length > 0 )
  for( int i = 0; i < hrHeights.length; i++ )
    if( hrHeights[i] != null )
      columnGroupHeaderLayer.doCommand(new RowResizeCommand(columnGroupHeaderLayer, i, hrHeights[i]));

List<ColumnHeaderGroup> groups = params.getColumnHeaderGroups();
for( ColumnHeaderGroup group : groups ) {
  List<Integer> indices = group.getIndices();
  int[] indicesArray = new int[indices.size()];
  for( int i = 0; i < indices.size(); i++ )
    indicesArray[i] = indices.get(i);
  columnGroupHeaderLayer.addColumnsIndexesToGroup(group.getName(), indicesArray);
}

// Row header
final DefaultRowHeaderDataProvider rowHeaderDataProvider =
    new DefaultRowHeaderDataProvider(bodyDataProvider);
DefaultRowHeaderDataLayer rowHeaderDataLayer =
    new DefaultRowHeaderDataLayer(rowHeaderDataProvider);
ILayer rowHeaderLayer =
    new RowHeaderLayer(rowHeaderDataLayer, bodyLayer, bodyLayer.getSelectionLayer());

// Corner
final DefaultCornerDataProvider cornerDataProvider =
    new DefaultCornerDataProvider(defaultColumnHeaderDataProvider, rowHeaderDataProvider);
DataLayer cornerDataLayer =
    new DataLayer(cornerDataProvider);
ILayer cornerLayer =
    new CornerLayer(cornerDataLayer, rowHeaderLayer, columnGroupHeaderLayer);

// Grid
GridLayer gridLayer =
    new GridLayer(bodyLayer, columnGroupHeaderLayer, rowHeaderLayer, cornerLayer);

NatTable natTable = new NatTable(parent, gridLayer, false);

editor.setFilterator(new TextFilterator<TableLine>() {

  @Override
  public void getFilterStrings(List<String> baseList, TableLine element) {
    for( int i = 0; i < element.getLength(); i++ )
      baseList.add("" + element.getObjectByColumn(i));
  }
});
editor.setMode(TextMatcherEditor.REGULAR_EXPRESSION);
bodyLayerStack.getFilterList().setMatcherEditor(editor);

natTable.addConfiguration(new DefaultNatTableStyleConfiguration());
natTable.addConfiguration(new ContextMenuConfiguration(natTable));
natTable.addConfiguration(new AbstractRegistryConfiguration() {
  
  @Override
  public void configureRegistry(IConfigRegistry configRegistry) {
    Style cellStyle = new Style();
    cellStyle.setAttributeValue(
            CellStyleAttributes.BACKGROUND_COLOR,
            GUIHelper.COLOR_WIDGET_BACKGROUND);
    configRegistry.registerConfigAttribute(
            CellConfigAttributes.CELL_STYLE, cellStyle,
            DisplayMode.NORMAL, RowHeaderLabel);
  }
});
natTable.configure();
return natTable;  }

最终，问题可能出在具有两行列标题创建的nat表的nat表层实现上.

Eventually, the problem may be in nat table layer implementation at nat table with two-row column headers creation.

推荐答案

问题出在您的代码中.在具有 ColumnGroupHeader 的版本中，您将创建两个主体层堆栈.首先，您还要显示 BodyLayerStack .但是该列未与列组示例一起使用.在那里，您使用第二个名为 ColumnGroupBodyLayerStack 的列.由于未显示，因此我无法确定该类是否缺少行选择配置.但是可能是这样，因为在NatTable层实现中没有关于该功能的问题.

The issue is in your code. In the version with the ColumnGroupHeader you create two body layer stacks. First the BodyLayerStack that you also show. But that one is not used with the column group example. There you use the second one named ColumnGroupBodyLayerStack. As that one is not shown I can't tell if that class is missing the row selection configuration. But probably it is, as there is no issue in the NatTable layer implementation with regards to that feature.

顺便说一句，我建议使用NatTable 1.6引入的性能列分组，而不要使用旧的基于 ColumnGroupModel 的实现.

BTW, I would suggest to use the performance column grouping introduced with NatTable 1.6 instead of the old ColumnGroupModel based implementation.

这篇关于NatTable中具有列组标题的RowSelection的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！