<Swing Dev> [9] Review request for 8136366 Add a public API to create a L&F without installation

[Alexander Scherbatiy]

   Hello,

  Could you review the updated fix:
    http://cr.openjdk.java.net/~alexsch/8136366/webrev.01

   The UnsupportedLookAndFeelException is thrown from the 
UIManager.createLookAndFeel(className) method for unsupported L&Fs.

   Thanks,
   Alexandr.

On 01/04/16 18:14, Sergey Bylokhov wrote:
> On 01.04.16 16:02, Alexander Scherbatiy wrote:
>>     I see the point that creating non installed system L&F may not have
>> many sense.
>
> I guess we should thinking about supported/unsupported instead of 
> installed/non-installed.
>
>>
>>     One more use case that should be considered is using the
>> createLookAndFeel(className) method with custom L&Fs.
>>
>>     For example someone can have a list with L&F class names which
>> includes both system and custom L&F.
>>     Using a class name he wants to check if the given L&F is supported.
>> Does he need to install the custom L&F first?
>>     If no, he will need to handle L&Fs differently using
>> UIManager.createLookAndFeel(className) for system L&Fs and reflection
>> for custom.
>
> Is the new method a "shortcut" for:
>  - UIManager.setLookAndFeel("com.foo")
>  - laf = UIManager.getLookAndFeel();
>  - laf is used...
> Then probably the new method should work symmetrically to 
> setLookAndFeel() and throw UnsupportedLookAndFeelException()? And if 
> the Laf will be created will means that its state is valid(like 
> uidefaults etc)
>
> Small notes:
> - Should we specify the null behavior?
> - It is unrelated to current fix, but I wonder why we call newInstance 
> for all incoming classes(we initialize the class and create the 
> instance), and then we cast this new object to LookAndFeel.
>