TableViewerColumn中是否可以有一个按钮?有几个帖子证实了这一点,但我发现没有实际可行的代码。我已经读过一个关于DialogCellEditor的内容,那是什么内容?
此致 马库斯
答案 0 :(得分:1)
由于这似乎是一个常见问题,我尝试了一种解决方法。我使用图像作为标签并添加编辑支持,如下所示:
col = createTableViewerColumn(titles[10], bounds[10], 10);
col.setEditingSupport(new DeleteSupport(viewer));
col.setLabelProvider(new ColumnLabelProvider() {
@Override
public Image getImage(Object element) {
return new Image(ApplicationRunner.getApp().getShell()
.getDisplay(), "ressources/images/delete.png");
}
@Override
public String getText(Object element) {
return "";
}
});
在DeleteSupport类(扩展EditingSupport)中,您必须让canEdit()返回false,因此图像不可选。但是,你不能使用getValue()。所以,在返回false之前,我在canEdit()中做了我所做的一切。这与简单的按钮相同。
DeleteSupport如下所示:
public class DeleteSupport extends EditingSupport {
private final TableViewer viewer;
public DeleteSupport(TableViewer viewer) {
super(viewer);
this.viewer = viewer;
}
@Override
protected CellEditor getCellEditor(Object element) {
return new TextCellEditor(viewer.getTable());
}
@Override
protected boolean canEdit(Object element) {
// if confirmed, try to delete the customer
if (MessageDialog.openConfirm( ApplicationRunner.getApp().getShell(),
"Confirm delete",
"Soll " + ((Customer) element).getFirstname()
+ " " + ((Customer) element).getLastname()
+ " be deleted? Cannot be undone!")) {
try {
CustomerDAO.getInstance().delete(((Customer) element).getId());
} catch (SQLException e) {
// TODO something
}
}
// reload anyways
try {
viewer.setInput(CustomerDAO.getInstance().getAll());
} catch (SQLException e) {
// TODO something else
}
viewer.refresh();
return false;
}
@Override
protected Object getValue(Object element) {
return "";
}
@Override
protected void setValue(Object element, Object value) {
}
}