[news.eclipse.platform.swt] Re: Trees and Tables

[Tom Schindl <tom.schindl@xxxxxxxxxxxxxxx>]

Is there a reason you are not using the JFace Table/Tree layout classes?

Tom

T. Wilhelm schrieb:
> Hey Grant,
> 
> i dont know if my use case is compelling. I need it because i wrote a
> method which calculates the width of a table, then it calculates the
> minimum width of all columns and if there is space left, the columns
> will be enlarged     proportionally. I want to use this method for my
> tables, as well as for my trees which also have some columns. In my
> method i need methods like getItemheight(), getColumn(index i),
> getHeaderText() and so on, and i saw that both controls have these
> methods but anyway i cant use it because the superclass composite doesnt
> have it. So i thought if the two controls have all these common methods
> it would make sense to introduce an interface or another superclass.
> I solved my problem by creating a ColumnManager class which is
> subclassed by a TreeColumnManager and a TableColumnManager, but i
> thought i would make generally sense to introduce an interface.
> 
> Greetz
> Thomas
> 
> Grant Gayed wrote:
> 
>> Hi,
> 
>> You aren't overlooking anything, the hierarchy is what it is.  I don't
>> think
>> there was a specific reason, other than there not being a clear
>> advantage to
>> them having a common supertype, since usually you know if you have a
>> handle
>> to a Table vs. a Tree.  SWT does not generally implement extra
>> classes/interfaces like this, though there have been some requests in the
>> past for them.  I would suggest logging a Feature Request for this, but
>> based on previous ones I don't think it would be implemented.  Unless you
>> have a very compelling use case (?).
> 
>> Grant
> 
> 
>