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HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

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Helene Bilbo

HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

I already asked this on Stackoverflow, but as there were no answers, I post the question also here:

I want to build a Morph that accepts the dropping of files and folders onto it and that answers a new FileSystem FileReference for them in Pharo 1.4.

I found the class ExternalDropHandler and the wantsDropFiles: anEvent method in Morph, but it don't know how to put it all together, especially as ExternalDropHandler seems to work still with the old Files file system.

What I did so far:
I made a subclass of Morph and implemented wantsDroppedMorph: aMorph event: evt, wantsDropFiles: anEvent and dropFiles: anEvent and set enableDragNDrop: to True. I open an instance in World and bring the Morph to the front. But, whenever I drop a file or folder onto it, it's the World, instance of PasteUpMorph, that get's to handle the drop (I found out by putting in some self halts) and not my Morph.

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

helene did you check on pharo by example because hilaire wrote something on morph drag and dropping a while ago and we used it.
I looked for my little example where I controlled a that a morph would on demand repel a drop or accept it.
I did not check it but here it is
Let me know if it is working for you. first in 1.4 and if you can adapt it for your need.

On Aug 14, 2012, at 9:25 PM, Helene Bilbo wrote:

> I already asked this on Stackoverflow, but as there were no answers, I post
> the question also here:
>
> I want to build a Morph that accepts the dropping of files and folders onto
> it and that answers a new FileSystem FileReference for them in Pharo 1.4.
>
> I found the class ExternalDropHandler and the wantsDropFiles: anEvent method
> in Morph, but it don't know how to put it all together, especially as
> ExternalDropHandler seems to work still with the old Files file system.
>
> *What I did so far:*
> I made a subclass of Morph and implemented wantsDroppedMorph: aMorph event:
> evt, wantsDropFiles: anEvent and dropFiles: anEvent and set enableDragNDrop:
> to True. I open an instance in World and bring the Morph to the front. But,
> whenever I drop a file or folder onto it, it's the World, instance of
> PasteUpMorph, that get's to handle the drop (I found out by putting in some
> self halts) and not my Morph.
>
>
>
> --
> View this message in context: http://forum.world.st/HowTo-make-a-Morph-that-accepts-dropped-files-and-folders-and-produces-a-new-FileSystem-FileReferenc4-tp4644119.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
>

DragAndDropRepel.3.cs (2K) Download Attachment

Helene Bilbo

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

Stéphane Ducasse wrote

helene did you check on pharo by example because hilaire wrote something on morph drag and dropping a while ago and we used it.
I looked for my little example where I controlled a that a morph would on demand repel a drop or accept it.
I did not check it but here it is
Let me know if it is working for you. first in 1.4 and if you can adapt it for your need.

Yes, what you attached is the example from PBE1. It works perfectly well.

My problem seems to be specific to the case, where a file or folder from outside the Pharo window is dropped on the Morph. In this case it's always the World that gets to handle the drop before my Morph is even asked to do anything about it.

Helene Bilbo

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

I try to implement a UI like the one shown in the image i attach:

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

In reply to this post by Helene Bilbo

>
> Stéphane Ducasse wrote
>>
>> helene did you check on pharo by example because hilaire wrote something
>> on morph drag and dropping a while ago and we used it.
>> I looked for my little example where I controlled a that a morph would on
>> demand repel a drop or accept it.
>> I did not check it but here it is
>> Let me know if it is working for you. first in 1.4 and if you can adapt it
>> for your need.
>>
>
> Yes, what you attached is the example from PBE1. It works perfectly well.
>
> My problem seems to be specific to the case, where a file or folder from
> outside the Pharo window is dropped on the Morph. In this case it's always
> the World that gets to handle the drop before my Morph is even asked to do
> anything about it.

Check the code in HandMorph because it is the one that we started to clean with igor (our cleans are not in the image).
But the handmorph has some wonderful case statement that handle the drop from external
Sorry not to be able to be more supportive.

Stef

>
>
>
> --
> View this message in context: http://forum.world.st/HowTo-make-a-Morph-that-accepts-dropped-files-and-folders-and-produces-a-new-FileSystem-FileReferenc4-tp4644119p4644135.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
>

Helene Bilbo

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

Stéphane Ducasse wrote

> My problem seems to be specific to the case, where a file or folder from
> outside the Pharo window is dropped on the Morph. In this case it's always
> the World that gets to handle the drop before my Morph is even asked to do
> anything about it.

Check the code in HandMorph because it is the one that we started to clean with igor (our cleans are not in the image).
But the handmorph has some wonderful case statement that handle the drop from external
Sorry not to be able to be more supportive.

Thank you for the hint. It seems the problem lies in the fact that a "dropFilesEvent" is different from a "dropEvent" and therefore is not handled by MorphicEventDispatcher>>dispatchDropEvent:with: but by MorphicEventDispatcher>>dispatchEvent:with: and they handle differently which morph may get to process the event.
Still i have not yet a solution ;(

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

I do not know more but indeed we will have to clean and simplify that.

STef

On Aug 16, 2012, at 11:24 AM, Helene Bilbo wrote:

>
> Stéphane Ducasse wrote
>>
>>> My problem seems to be specific to the case, where a file or folder from
>>> outside the Pharo window is dropped on the Morph. In this case it's
>>> always
>>> the World that gets to handle the drop before my Morph is even asked to
>>> do
>>> anything about it.
>>
>> Check the code in HandMorph because it is the one that we started to clean
>> with igor (our cleans are not in the image).
>> But the handmorph has some wonderful case statement that handle the drop
>> from external
>> Sorry not to be able to be more supportive.
>>
>
> Thank you for the hint. It seems the problem lies in the fact that a
> "dropFilesEvent" is different from a "dropEvent" and therefore is not
> handled by MorphicEventDispatcher>>dispatchDropEvent:with: but by
> MorphicEventDispatcher>>dispatchEvent:with: and they handle differently
> which morph may get to process the event.
> Still i have not yet a solution ;(
>
> http://forum.world.st/file/n4644226/Bildschirmfoto_2012-08-16_um_11.17.35.png
>
>
>
> --
> View this message in context: http://forum.world.st/HowTo-make-a-Morph-that-accepts-dropped-files-and-folders-and-produces-a-new-FileSystem-FileReferenc4-tp4644119p4644226.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
>

Denis Kudriashov

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

In reply to this post by Helene Bilbo

2012/8/16 Helene Bilbo <[hidden email]>

Thank you for the hint. It seems the problem lies in the fact that a
"dropFilesEvent" is different from a "dropEvent" and therefore is not
handled by MorphicEventDispatcher>>dispatchDropEvent:with: but by
MorphicEventDispatcher>>dispatchEvent:with: and they handle differently
which morph may get to process the event.
Still i have not yet a solution ;(

http://forum.world.st/file/n4644226/Bildschirmfoto_2012-08-16_um_11.17.35.png

I'm always wondering when look at such code.
How so many "if statements" can exist at smalltalk system?

Best regards,
Denis

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

On Aug 16, 2012, at 12:54 PM, Denis Kudriashov wrote:

> 2012/8/16 Helene Bilbo <[hidden email]>
>
> Thank you for the hint. It seems the problem lies in the fact that a
> "dropFilesEvent" is different from a "dropEvent" and therefore is not
> handled by MorphicEventDispatcher>>dispatchDropEvent:with: but by
> MorphicEventDispatcher>>dispatchEvent:with: and they handle differently
> which morph may get to process the event.
> Still i have not yet a solution ;(
>
> http://forum.world.st/file/n4644226/Bildschirmfoto_2012-08-16_um_11.17.35.png
>
>
> I'm always wondering when look at such code.
> How so many "if statements" can exist at smalltalk system?

we already removed a bunch of them (not there but in the handMorph loop)
but I should continue to work on it to get it ready to integrate.

>
> Best regards,
> Denis
>
>

Denis Kudriashov

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

2012/8/16 Stéphane Ducasse <[hidden email]>

On Aug 16, 2012, at 12:54 PM, Denis Kudriashov wrote:

> 2012/8/16 Helene Bilbo <[hidden email]>
>
> Thank you for the hint. It seems the problem lies in the fact that a
> "dropFilesEvent" is different from a "dropEvent" and therefore is not
> handled by MorphicEventDispatcher>>dispatchDropEvent:with: but by
> MorphicEventDispatcher>>dispatchEvent:with: and they handle differently
> which morph may get to process the event.
> Still i have not yet a solution ;(
>
> http://forum.world.st/file/n4644226/Bildschirmfoto_2012-08-16_um_11.17.35.png
>
>
> I'm always wondering when look at such code.
> How so many "if statements" can exist at smalltalk system?

we already removed a bunch of them (not there but in the handMorph loop)
but I should continue to work on it to get it ready to integrate.

Thank's for all your hard work.
But actualy I wait Shapes framework from Fernando Olivero.

Best regards,
Denis

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

> we already removed a bunch of them (not there but in the handMorph loop)
> but I should continue to work on it to get it ready to integrate.
>
>
> Thank's for all your hard work.
> But actualy I wait Shapes framework from Fernando Olivero.

Ok I can understand now I would suggest to help fernando to deliver it and us to integrate it.

Stef
> Best regards,
> Denis
>
>
>

Ricardo Moran

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

Hi, maybe my version of Pharo 1.4 is too old (Pharo1.4a Latest update: #14406) or maybe this only works in Windows but I made a morph that handles dropped files by just overriding these two methods:

wantsDropFiles: anEvent

^ true

dropFiles: evt

"Do what you want here"

Cheers,

Richo

On Thu, Aug 16, 2012 at 2:25 PM, Stéphane Ducasse <[hidden email]> wrote:

> we already removed a bunch of them (not there but in the handMorph loop)
> but I should continue to work on it to get it ready to integrate.
>
>
> Thank's for all your hard work.
> But actualy I wait Shapes framework from Fernando Olivero.

Ok I can understand now I would suggest to help fernando to deliver it and us to integrate it.

Stef
> Best regards,
> Denis
>
>
>

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

it should work since we did not change much in that area.

Stef

On Aug 16, 2012, at 9:29 PM, Ricardo Moran wrote:

> Hi, maybe my version of Pharo 1.4 is too old (Pharo1.4a Latest update: #14406) or maybe this only works in Windows but I made a morph that handles dropped files by just overriding these two methods:
>
> wantsDropFiles: anEvent
> ^ true
>
> dropFiles: evt
> "Do what you want here"
>
> Cheers,
> Richo
>
> On Thu, Aug 16, 2012 at 2:25 PM, Stéphane Ducasse <[hidden email]> wrote:
> > we already removed a bunch of them (not there but in the handMorph loop)
> > but I should continue to work on it to get it ready to integrate.
> >
> >
> > Thank's for all your hard work.
> > But actualy I wait Shapes framework from Fernando Olivero.
>
> Ok I can understand now I would suggest to help fernando to deliver it and us to integrate it.
>
> Stef
> > Best regards,
> > Denis
> >
> >
> >
>
>
>

Helene Bilbo

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

In reply to this post by Ricardo Moran

Ricardo Moran wrote

Hi, maybe my version of Pharo 1.4 is too old (Pharo1.4a Latest update:
#14406) or maybe this only works in Windows but I made a morph that handles
dropped files by just overriding these two methods:

wantsDropFiles: anEvent
^ true

dropFiles: evt
"Do what you want here"

That's the first thing i tried. I coudn't find #14406 but i retried in other old builds also in 1.3 but i always have the same problem: Non on the methods in this morph get's ever called, because it is the World (PasteUpMorph) that handles everything, before my morph even get's a chance.

Might it have to do something with the OS? I run on MacOSX.

Or can you share an image where this is working?

Ricardo Moran

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

On Fri, Aug 17, 2012 at 11:34 AM, Helene Bilbo <[hidden email]> wrote:

(...)

Or can you share an image where this is working?

No problem. Here it is: https://dl.dropbox.com/u/43706148/Pharo-1.4-DropHandler.zip

Cheers,

Richo

--
View this message in context: http://forum.world.st/HowTo-make-a-Morph-that-accepts-dropped-files-and-folders-and-produces-a-new-FileSystem-FileReferenc4-tp4644119p4644424.html

Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Stéphane Ducasse

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

In reply to this post by Helene Bilbo

helene

once you got was is not working please report to us the solution :)

Stef

On Aug 17, 2012, at 4:34 PM, Helene Bilbo wrote:

>
> Ricardo Moran wrote
>>
>> Hi, maybe my version of Pharo 1.4 is too old (Pharo1.4a Latest update:
>> #14406) or maybe this only works in Windows but I made a morph that
>> handles
>> dropped files by just overriding these two methods:
>>
>> wantsDropFiles: anEvent
>> ^ true
>>
>> dropFiles: evt
>> "Do what you want here"
>>
>
> That's the first thing i tried. I coudn't find #14406 but i retried in other
> old builds also in 1.3 but i always have the same problem: Non on the
> methods in this morph get's ever called, because it is the World
> (PasteUpMorph) that handles everything, before my morph even get's a chance.
>
> Might it have to do something with the OS? I run on MacOSX.
>
> Or can you share an image where this is working?
>
>
>
> --
> View this message in context: http://forum.world.st/HowTo-make-a-Morph-that-accepts-dropped-files-and-folders-and-produces-a-new-FileSystem-FileReferenc4-tp4644119p4644424.html
> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
>

Helene Bilbo

Re: HowTo make a Morph that accepts dropped files and folders and produces a new FileSystem FileReference in Pharo 1.4

Stéphane Ducasse wrote

once you got was is not working please report to us the solution :)

Ha, it's something totally different than i thought :)))

The only thing Ricardo (Thank you for sharing your image, Ricardo!!) and i did differently was, that he made a real big morph to try it, while i tried with the standard size produced by Morph new.

So the thing to find out now is, when Pharo considers a Cursor/Hand to be above a certain Morph. The arrow beeing completely inside the Morph does not seem to be enough. I will write when i found out more. Or i will be happy if someone already knows about it and can tell me..

helene.