[news.eclipse.platform] Re: Can the FilteredList have columns?

[Eric Rizzo <eclipse-news@xxxxxxxxxxxx>]

On 2/16/2009 6:42 PM, Wendell Beckwith wrote:
> Well mainly we are porting a Swing UI which has a table with a text
> field that filters the table entries as the user types in it. Exactly
> what the FilteredList and FilteredTree do. The only difference between
> the 2 is that our current UI element actually has several columns. Plus
> the FilteredList/Tree classes have UI enhancements to clear the text
> control, etc.
>
> While we could try and concatenate the column strings into a single line
> of text to be included in the FilteredList, the info likely will not
> line up as nicely as in table columns proper. We could also create our
> own composite with a text control and a tableviewer, but we was hoping
> to reuse and customize the FilteredList class if possible. No need to
> suffer from NIH if we don't have to.

Ah, FilteredTree is your key then. A TreeViewer can actually have 
multiple columns. Again, have a look at the JFace Snippets, in 
particular this one (I think) demonstrates a tree with multiple columns: 
http://wiki.eclipse.org/index.php/JFaceSnippets#Snippet027TreeLayout

In general, keep in mind that TreeViewer and TableViewer are VERY 
similar and share the same inheritance hierarchy.

That should get you pretty close to what you want, although I'm not 
certain about column-based sorting on a tree (I've only done it for a 
TableViewer).

Eric



> Eric Rizzo wrote:
> > On 2/16/2009 4:00 PM, Wendell Beckwith wrote:
> > > The FilteredList class seems to be what I need from a UI since, however,
> > > I need several columns to be a part of the list with the associated
> > > sorting by column. Is this class extensible in this way or via
> > > subclassing or am I looking at creating a new Composite with the same
> > > behavior?
> >
> > Any reason you can not use a TableViewer instead? It extends
> > StructuredViewer which supports filtering and column-based sorting.
> > See this snippet for example:
> > http://wiki.eclipse.org/index.php/JFaceSnippets#Snippet040TableViewerSorting
> >
> >
> > Hope this helps,
> > Eric