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Programmatically simulating drag and drop

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Sean P. DeNigris

Programmatically simulating drag and drop

Administrator

Does anyone know how to simulate drag and drop? I managed to pick up a morph via HandMorph attachMorph:, but I can't get the cursor to move (tried position: and a few others).

Thanks.

Sean DeNigris

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Cheers,
Sean

Bert Freudenberg

Re: Programmatically simulating drag and drop

On 06.04.2010, at 15:48, DeNigris Sean wrote:

Does anyone know how to simulate drag and drop? I managed to pick up a morph via HandMorph attachMorph:, but I can't get the cursor to move (tried position: and a few others).

Thanks.

Sean DeNigris

How detailed do you need the simulation to be? In the end, dropping results in

targetMorph addMorph: droppedMorph

- Bert -

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Sean P. DeNigris

Re: Programmatically simulating drag and drop

Administrator

Bert Freudenberg wrote

How detailed do you need the simulation to be? In the end, dropping results in

targetMorph addMorph: droppedMorph

Thanks. I tried it and it didn't work because what I'm doing is writing an acceptance test, and I need the drag & drop events to fire. When I do that only, it just adds the "dropped morph" as a sub-morph to the target.

Also, I'm highly curious about how to programmatically interact with the HandMorph in general. I looked at HandMorphForReplay a little bit, but it seems to use recording of positions (which would be too brittle for a high-level test).

Sean

Cheers,
Sean

Bert Freudenberg

Re: Programmatically simulating drag and drop

On 06.04.2010, at 19:02, Sean P. DeNigris wrote:

>
>
> Bert Freudenberg wrote:
>>
>> How detailed do you need the simulation to be? In the end, dropping
>> results in
>>
>> targetMorph addMorph: droppedMorph
>>
>
> Thanks. I tried it and it didn't work because what I'm doing is writing an
> acceptance test, and I need the drag & drop events to fire. When I do that
> only, it just adds the "dropped morph" as a sub-morph to the target.

How about this?

droppedMorph formerPosition: 50@50. "to test rejecting"
ActiveHand
position: targetMorph center;
attachMorph: droppedMorph;
dropMorphs

>
> Also, I'm highly curious about how to programmatically interact with the
> HandMorph in general. I looked at HandMorphForReplay a little bit, but it
> seems to use recording of positions (which would be too brittle for a
> high-level test).

Your best bet would be to subclass HandMorph similar to HandMorphForReplay or RemoteHandMorph.

- Bert -

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Sean P. DeNigris

Re: Programmatically simulating drag and drop

Administrator

Bert Freudenberg wrote

How about this?

droppedMorph formerPosition: 50@50. "to test rejecting"
ActiveHand
position: targetMorph center;
attachMorph: droppedMorph;
dropMorphs

Right on the money! I was doing the ActiveHand>>position: by itself in a workspace, and the cursor does not get updated, so I thought it wasn't working (need a fresh pair of eyes!). When I did the drop immediately after, everything worked great. Thanks again :)

Bert Freudenberg wrote

Your best bet would be to subclass HandMorph similar to HandMorphForReplay or RemoteHandMorph.

Great idea - kind of like living documentation?!

Sean

Cheers,
Sean

Sean P. DeNigris

Re: Programmatically simulating drag and drop

Administrator

I did a little more investigating and found a way to get the mouse handlers to work:
mvevt := MouseMoveEvent new
setType: #mouseMove
startPoint: ActiveHand position
endPoint: 100@100
trail: nil
buttons: 0
hand: ActiveHand
stamp: TimeStamp current.

ActiveHand handleEvent: mvevt.

evt := MouseButtonEvent new
setType: #mouseDown
position: 50@50
which: MouseEvent redButton
buttons: MouseEvent redButton
hand: ActiveHand
stamp: TimeStamp current.

ActiveHand handleEvent: evt.

The mouse move is necessary or the grabbed morph flies to wherever the hand is, but even with this, if you touch the mouse after it's grabbed, it flies there anyway.

Cheers,
Sean

Jerome Peace

Re: Programmatically simulating drag and drop

Hi Sean,

You don't have to use the ACTIVE hand.
Any hand will do.

e.g.

artificialHand = HandMorphForReplay new .

You will have to play and look at the classes. I haven't ever tried this.
So I don't know if this particular solution will work. It should be close.

Worse comes to worse you could base an ArtificialHand class on HandMorphForReplay and make something that worked to your requirements.

Happy hunting.

Yours in curiosity and service, --Jerome Peace

--- On Sat, 5/1/10, Sean P. DeNigris <[hidden email]> wrote:

> From: Sean P. DeNigris <[hidden email]>
> Subject: [Newbies] Re: Programmatically simulating drag and drop
> To: [hidden email]
> Date: Saturday, May 1, 2010, 10:10 PM
>
> I did a little more investigating and found a way to get
> the mouse handlers
> to work:
>     mvevt := MouseMoveEvent new
>         setType: #mouseMove
>         startPoint:
> ActiveHand position
>         endPoint: 100@100
>         trail: nil
>         buttons: 0
>         hand: ActiveHand
>         stamp: TimeStamp
> current.
>
>     ActiveHand handleEvent: mvevt.
>
>     evt := MouseButtonEvent new
>         setType: #mouseDown
>         position: 50@50
>         which: MouseEvent
> redButton
>         buttons: MouseEvent
> redButton
>         hand: ActiveHand
>         stamp: TimeStamp
> current.
>
>     ActiveHand handleEvent: evt.
>
> The mouse move is necessary or the grabbed morph flies to
> wherever the hand
> is, but even with this, if you touch the mouse after it's
> grabbed, it flies
> there anyway.
> --
> View this message in context: http://forum.world.st/Programmatically-simulating-drag-and-drop-tp1752837p2122490.html
> Sent from the Squeak - Beginners mailing list archive at
> Nabble.com.
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