Nattable是一个用于Java Swing和Eclipse RCP应用程序的高度可定制的表格库。它提供了丰富的功能和灵活性,使开发人员能够轻松地创建复杂的表格,并支持各种操作,如排序、过滤、编辑和选择。
在Nattable中实现Cut命令可以通过以下步骤完成:
<dependency>
<groupId>org.eclipse.nebula.widgets.nattable</groupId>
<artifactId>nattable-core</artifactId>
<version>INSERT_VERSION_HERE</version>
</dependency>
DefaultNatTable
类来创建一个基本的表格实例,并使用ListDataProvider
类作为数据模型。例如:ListDataProvider<MyObject> dataProvider = new ListDataProvider<>(myObjectList, myColumnPropertyAccessor);
DefaultNatTable natTable = new DefaultNatTable(parent, SWT.NONE, dataProvider);
ICommandHandler
接口,并在doCommand
方法中编写处理逻辑。例如:public class CutCommandHandler implements ICommandHandler {
private final DefaultSelectionLayer selectionLayer;
public CutCommandHandler(DefaultSelectionLayer selectionLayer) {
this.selectionLayer = selectionLayer;
}
@Override
public boolean doCommand(ILayer targetLayer, CutDataCommand command) {
// 获取选中的单元格数据
List<Range> selectedRanges = selectionLayer.getSelectedCellPositions();
List<Object> cutData = new ArrayList<>();
for (Range range : selectedRanges) {
for (int row = range.start.y; row <= range.end.y; row++) {
for (int column = range.start.x; column <= range.end.x; column++) {
cutData.add(targetLayer.getDataValueByPosition(column, row));
}
}
}
// 执行剪切操作
Clipboard clipboard = new Clipboard(Display.getDefault());
TextTransfer textTransfer = TextTransfer.getInstance();
clipboard.setContents(new Object[] { cutData.toArray() }, new Transfer[] { textTransfer });
clipboard.dispose();
// 清空剪切的单元格数据
for (Range range : selectedRanges) {
selectionLayer.clear(range);
}
return true;
}
}
registerCommandHandler
方法将处理器与Cut命令关联起来。例如:natTable.addConfiguration(new AbstractUiBindingConfiguration() {
@Override
public void configureUiBindings(UiBindingRegistry uiBindingRegistry) {
uiBindingRegistry.registerKeyBinding(new KeyEventMatcher(SWT.MOD1, 'X'), new CutAction());
}
});
natTable.registerCommandHandler(new CutCommandHandler(natTable.getSelectionModel().getSelectionLayer()));
现在,当用户按下Ctrl+X组合键时,Cut命令将会触发,并执行自定义的命令处理器中定义的逻辑。该逻辑将选中的单元格数据剪切到剪贴板,并清空选中的单元格数据。
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