this is on my list for 1.5, in 1.4/1.3 it would require too many api
breaks i think.
for now you can just replace the datatable with a new instance. the
only state you have to carry over is the current page, so its pretty
easy.
-igor
On Wed, Aug 6, 2008 at 9:45 AM, Ladislav Thon <[EMAIL PROTECTED]> wrote:
> I've managed to "solve" similar problem by
>
> 1. setting a specific CSS class on each column, both in th and td tags (this
> can be done by overriding getCssClass() method of AbstractColumn)
>
> 2. setting a specific CSS class on the table when some columns should be
> hidden (this can be done e.g. using an AttributeAppender behavior)
>
> 3. hiding the columns in CSS, like table.hideFirstColumn .col1 {display:
> none}
>
> Not very nice (quite ugly in fact), but works for my needs. Yours might be
> more dynamic though (I basically have only two states, in the first all
> columns are shown, in the second few of them are hidden).
>
> LT
>
> 2008/8/3 Jeremy Thomerson <[EMAIL PROTECTED]>
>
>> I've perused the source and can't find an easy way to do this. I'm hoping
>> that maybe someone else has done it.
>>
>> In an app for one customer, I have a table that lists parts that could be
>> purchased. It is a subclass of DefaultDataTable. I pass it in a custom
>> sortable data provider that wraps a list - so it has all parts in a list.
>> Then, I have filters above the table that can filter the list to a specific
>> category of parts. But if you filter down to a certain category of parts,
>> some of those columns will be completely empty. It would be nice to hide
>> them. But the table was already created - and it operates off of a static
>> array of columns. The column doesn't provide an isVisible mechanism. Is
>> there an easy way to hide it, or does the table need to be recreated and
>> replaced within the ajax link?
>>
>> The current code is basically like this:
>>
>> final ListSortableDataProvider dp = new
>> ListSortableDataProvider(listOfParts, "columnToSortOn");
>> final PartInfoTable table = new PartInfoTable("table", new
>> VendorColumnFactory(vendor), vendor, dp);
>> add(table.setOutputMarkupId(true));
>>
>> AjaxFallbackLink filterLink = new AjaxFallbackLink("link") {
>> private static final long serialVersionUID = 1L;
>>
>> @Override
>> public void onClick(AjaxRequestTarget target) {
>> OrderVendorColumn column = (OrderVendorColumn)
>> nextFilterableColumn.getObject();
>> String valueToFilterOn = (String) item.getModelObject();
>> mPartFilter.addFilter(column, valueToFilterOn);
>> dp.setList(mPartFilter.filterPartsList(parts));
>> if (target != null) {
>> target.addComponent(table);
>> target.addComponent(LookupPartsPage.this.get("currentFilter"));
>> target.addComponent(LookupPartsPage.this.get("addFilter"));
>> }
>> }
>> };
>> filterLink.add(new Label("label",
>> item.getModel()).setRenderBodyOnly(true));
>>
>>
>> --
>> Jeremy Thomerson
>> http://www.wickettraining.com
>>
>
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