| TreeViewer sorts elements by name [message #7292] |
Wed, 14 March 2007 13:38  |
Eclipse User |
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Hi,
I use a TreeViewer to navigate through my Data. Everything is fine,
without the order. So i add a special ViewSorter.
Code Snip
>>>
private ViewerSorter getRevisionSorter() {
return new ViewerSorter(){
protected Comparator getComparator() {
return new Comparator() {
public int compare(Object arg0, Object arg1) {
System.out.println(arg0.getClass() + " -> " + arg0);
if(arg0 instanceof Revision && arg1 instanceof Revision) {
return (int) (((Revision) arg0).getRevisionNumber() - ((Revision)
arg1)
.getRevisionNumber());
}
else
return arg0.toString().compareTo(arg1.toString());
}
};
}
};
}
<<< Snap
The System out shows me that the Objects passed to the Comparator are
Strings. After looking at my ContentProvider I am sure that I have not
Strings in the Tree.
Is this a limitation in Milestone2?
Regards
Karsten
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| Re: TreeViewer sorts elements by name [message #8274 is a reply to message #7998] |
Thu, 15 March 2007 06:13  |
| Eclipse User |
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Hi,
I found my mistake. I override the method getComparer of ViewerSorter.
Now I override the method compare(Viewer,Object,Object) of the
ViewerComparator.
Thanks.
Karsten
Jochen Krause schrieb:
> Hi,
>
> The ViewerSorter works as expected from our experience, here is a code
> snippet from our online demo and the output:
>
> viewer.setSorter( new ViewerSorter() {
> public int compare( final Viewer viewer,
> final Object e1,
> final Object e2 )
> {
> System.out.println( e1.getClass() + " -> " + e1 );
> String name1 = Util.getName( ( ( IUser )e1 ) );
> String name2 = Util.getName( ( ( IUser )e2 ) );
> return name1.compareTo( name2 );
> }
> } );
>
> class org.eclipse.rap.showcase.model.User ->
> org.eclipse.rap.showcase.model.User@57807a
>
> It seems to be a problem on your end.
>
> Cheers,
>
> Jochen
>
> Karsten Panier wrote:
>> Hi,
>> I use a TreeViewer to navigate through my Data. Everything is fine,
>> without the order. So i add a special ViewSorter.
>> Code Snip
>> >>>
>>
>> private ViewerSorter getRevisionSorter() {
>> return new ViewerSorter(){
>>
>> protected Comparator getComparator() {
>> return new Comparator() {
>> public int compare(Object arg0, Object arg1) {
>> System.out.println(arg0.getClass() + " -> " +
>> arg0);
>> if(arg0 instanceof Revision && arg1 instanceof
>> Revision) {
>> return (int) (((Revision)
>> arg0).getRevisionNumber() - ((Revision) arg1)
>> .getRevisionNumber());
>> }
>> else
>> return
>> arg0.toString().compareTo(arg1.toString());
>> }
>> };
>> }
>> };
>> }
>> <<< Snap
>>
>> The System out shows me that the Objects passed to the Comparator are
>> Strings. After looking at my ContentProvider I am sure that I have not
>> Strings in the Tree.
>> Is this a limitation in Milestone2?
>> Regards
>> Karsten
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