[Cuis] Morphic drag and drop

[Juan Vuletich]

Creating new instances of PasteUpMorph is currently broken. I'll end 
mostly rewriting this class.

But you need less than that. Take a look at DragAndDropAreaMorph, and 
play with it.

Cheers,
Juan Vuletich

H. Hirzel wrote:
> P.S. Instance variable 'worldState' of the PasteUpMorph is nil.
>
> This is cause by the call to
>    mouseButton2Activity
>
> and that activates
>
> invokeWorldMenu
> 	"Put up the world menu, triggered by the passed-in event.
> 	Perhaps a good place to disable it if needed"
>
> 	| menu |
> 	menu _ (TheWorldMenu new
> 		world: self
> 		hand: self activeHand) buildWorldMenu.
> 	menu addTitle: Preferences desktopMenuTitle.
> 	menu popUpInWorld: self
>
>
> This should only be done for the World PasteUpMorph and not for a
> PasteUpMorph which is a submorph of the WorldMorph
>
>
> So if I subclass
>
> PasteUpMorph subclass: PasteUpMorphHH
>
> and do the same test as mentioned in the initial mail of this thread I
> no longer do have walkbacks.
>
>
> Note aside:
>
> PasteUpMorphHH does not appear in the WorldMenu / New morph chooser.
>
> I have to open it with PasteUpMorphHH new openInWorld
>
>
> --Hannes
>
>
> On 1/22/13, H. Hirzel <hannes.hirzel at gmail.com> wrote:
>   
>> Correction: I did the test of the previous email in an 4.1-1561 image.
>>
>> When doing the same thing 4.1-1572 the EllipseMorph sticks and I can
>> move the PasteUpMorph around.
>>
>> However there is still another error:
>>
>> Clicking on the PasteUpMorph brings up several Debugger windows and
>> the image freezes.
>>
>> See screen shot.
>>
>> --Hannes
>>
>>
>>
>> On 1/22/13, H. Hirzel <hannes.hirzel at gmail.com> wrote:
>>     
>>> Hello Juan
>>>
>>> I saw that you had done drag and drop fixes a day ago.
>>>
>>> https://github.com/jvuletich/Cuis/tree/master/UpdatesSinceLastRelease
>>>
>>> Updates 1562 to 1572
>>>
>>> A drag and drop question
>>>
>>> I create a PasteUpMorph by choosing the World menu 'New
>>> morph'/'Worlds'/'PasteUpMorph'.
>>>
>>> Then I create a basic Morph, e.g. an EllipseMorph and drop it to the
>>> PasteUpMorph. It does not stick though the menu of the PasteUpMorph
>>> has 'accept drops' checked. (see screen shot).
>>>
>>> Regards
>>> Hannes
>>>
>>>       
>
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