我正在尝试从中删除不止一行NatTable
。遵循从 Nattable 中删除行中描述的解决方案。我创建了以下类: Command 类如下所示:
public class DeleteMultiRowCommand extends AbstractMultiRowCommand {
public DeleteMultiRowCommand(AbstractMultiRowCommand command) {
super(command);
}
protected DeleteMultiRowCommand(ILayer layer, int[] rowPositions) {
super(layer, rowPositions);
}
@Override
public ILayerCommand cloneCommand() {
return new DeleteMultiRowCommand(this);
}
}
命令处理程序类:
public class DeleteMultiRowCommandHandler<T> implements ILayerCommandHandler<DeleteMultiRowCommand> {
private List<T> bodyData;
private SelectionLayer layer;
public DeleteMultiRowCommandHandler(List<T> bodyData, SelectionLayer selectionLayer) {
this.bodyData = bodyData;
this.layer = selectionLayer;
}
public DeleteMultiRowCommandHandler(List<T> bodyData){
this.bodyData = bodyData;
}
@Override
public Class<DeleteMultiRowCommand> getCommandClass() {
return DeleteMultiRowCommand.class;
}
@Override
public boolean doCommand(ILayer targetLayer, DeleteMultiRowCommand command) {
//convert the transported position to the target layer
if (command.convertToTargetLayer(targetLayer)) {
Collection<Integer>rowpos = command.getRowPositions();
//remove the element
for(Integer val : rowpos){
this.bodyData.remove(val.intValue());
targetLayer.fireLayerEvent(new RowDeleteEvent(targetLayer, val.intValue()));
}
return true;
}
return false;
}
}
并且命令将在单击 MenuItem 时触发
this.contextMenu = new PopupMenuBuilder(natTable)
.withInspectLabelsMenuItem()
.withClearAllFilters()
.withColumnRenameDialog()
.withMenuItemProvider(new IMenuItemProvider() {
@Override
public void addMenuItem(final NatTable natTable, Menu popupMenu) {
MenuItem deleteRow = new MenuItem(popupMenu, SWT.PUSH);
deleteRow.setText("Delete Row(s)");
deleteRow.setEnabled(true);
deleteRow.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent event) {
//int rowPosition = MenuItemProviders.getNatEventData(event).getRowPosition();
ILayer bl = ((GridLayer)natTable.getLayer()).getBodyLayer();
BodyLayerStack bl1 = (BodyLayerStack) bl;
SelectionLayer sl = bl1.getSelectionLayer();
int []poss = new int[sl.getFullySelectedRowPositions().length];
int i=0;
for(int pos1 : sl.getFullySelectedRowPositions()){
poss[i]=sl.getRowIndexByPosition(pos1);
i++;
}
//System.out.println("Menu item selected "+rowPosition);
//natTable.doCommand(new DeleteRowCommand(natTable, rowPosition));
natTable.doCommand(new DeleteMultiRowCommand(natTable, poss));
}
});
}
})
.build();
当我尝试删除行时,未选择的行将被删除。似乎是行位置到行索引转换的问题。在我的权利范围内,行位置到行索引转换是否IMenuItemProvider
正确?