[gradebook2-dev] Refreshing the column headers

[Thomas Amsler]

The column headers are constructed in
MultiGradeContentPanel's buildColumn(...) method:

ColumnConfig config = new ColumnConfig(id, name, columnWidth);

where the name is something like HW 1 [100pts].

You can overwrite this by getting the ColumnConfig objects from the grid.
Since your functionality is a toggle, you probably want to restore the
original column header titles. Here is some sample code:
e.g.

Class Member: private  Map<String, String> columnConfigBackup = null;

private void changeColumnConfigHeaders() {
    columnConfigBackup = new HashMap<String, String>();
    List<ColumnConfig> columnConfigs = grid.getColumnModel().getColumns();
    for(ColumnConfig columnConfig : columnConfigs) {
        if(columnConfig.getId().matches("[+-]?[0-9]+")) {
            columnConfigBackup.put(columnConfig.getId(),
columnConfig.getHeader());
            columnConfig.setHeader("something");
        }
    }
}

private void restoreColumnConfigHeaders() {
    for(String id : columnConfigBackup.keySet()) {

 grid.getColumnModel().getColumnById(id).setHeader(columnConfigBackup.get(id));
    }
}

Let me know if this works.

Best,
-- Thomas

On Mon, Aug 30, 2010 at 5:56 PM, Jim Eng <jimeng at umich.edu> wrote:

> As part of David's work on GRBK-483, he would like to refresh the column
> headers.  I think Thomas or Michael said there was a bug in 1.2.x that made
> that harder, but it would be fixed in 1.3.x. Is that correct?  I think David
> has already written code that puts corrected values in the header cells
> (corrected to fit the updated context), but they are not showing up. Can you
> tell us what method call in the event handler would cause the headers to
> refresh?
>
> Thanks.
>
> Jim
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