- Pharo-users - lists.pharo.org

Re: [Pharo-users] ZnUrl: Add multiple segment string

by Sven Van Caekenberghe

Hi Sean, On 21 Mar 2013, at 15:34, "Sean P. DeNigris" <sean(a)clipperadams.com> wrote: > Sven Van Caekenberghe-2 wrote >> So here is what I did in the latest version of Zinc-Resource-Meta >> (ConfigurationOfZincHTTPComponents project bleedingEdge load): > > Sounds great, but #addedToZnUrl: does not exist after loading bleeding > edge... maybe the config at http://www.squeaksource.com/MetacelloRepository > needs to be updated? My 'canonical' repository is http://mc.stfx.eu/ZincHTTPComponents, but that should not make any difference (but I must admit it is a pain to keep all those repositories in sync). You need Name: Zinc-Resource-Meta-Core-SvenVanCaekenberghe.12 Author: SvenVanCaekenberghe Time: 17 March 2013, 4:21:09.316 pm UUID: d571a909-0d2b-4e26-b219-89d1bb5f2640 and Name: Zinc-Resource-Meta-Tests-SvenVanCaekenberghe.8 Author: SvenVanCaekenberghe Time: 17 March 2013, 4:24:02.237 pm UUID: aee46c39-5c83-46e5-a7bc-c661f0bc5782 Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

March 21, 2013

Re: [Pharo-users] ZnUrl: Add multiple segment string

by Sean P. DeNigris

Sven Van Caekenberghe-2 wrote > Yes, I think AbstractFileReference>>#/ could probably be extended in a > similar way, but I am no FileSystem expert... ref1 := '/' asFileReference / 'Users' / 'me'. gives a FileReference with Path / 'Users' / 'me' ref2 := '/' asFileReference / 'Users/me'. gives a FileReference with Path / 'Users/me' I use the second version all the time, and even though the internal path representation is different, it still "works" e.g. ref1 exists = ref2 exists ----- Cheers, Sean -- View this message in context: http://forum.world.st/ZnUrl-Add-multiple-segment-string-tp4672728p4677657.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 21, 2013

Re: [Pharo-users] ZnUrl: Add multiple segment string

by Sean P. DeNigris

Sven Van Caekenberghe-2 wrote > So here is what I did in the latest version of Zinc-Resource-Meta > (ConfigurationOfZincHTTPComponents project bleedingEdge load): Sounds great, but #addedToZnUrl: does not exist after loading bleeding edge... maybe the config at http://www.squeaksource.com/MetacelloRepository needs to be updated? ----- Cheers, Sean -- View this message in context: http://forum.world.st/ZnUrl-Add-multiple-segment-string-tp4672728p4677656.h… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by MartinW

Benjamin Van Ryseghem-2 wrote > The problem is mutable objects, what can you do then â¦ > For Spec I introduced value holders :) I was already wondering what ValueHolders were abould :) I am looking forward to the Spec Tutorial Video from the Pharo Conference. Can i already do this with Spec: Display a Slider and a Textfield for a numerical value and when i change the value via the slider the Textfiled will update and vice versa? -- View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by MartinW

Stephan Eggermont wrote >>How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >>changes of the variable? > > That is a very low-level question. Do you just want to know, or do you > want to use it? > When building UI's in Pharo, the first question should probably be: can I > get away > with building it in Glamour. That is a high-level UI toolkit specialized > in creating > browsers. If you can, it is much less work. I am interested in both questions. I want to just use it - but of course i am interested in knowing different possibilities and how they work and why to prefer one to the other. I have not looked at Glamour yet - and i am a bit reluctant to add an extra layer, but i will give it a try. But btw - isn't it a very common problem to keep for example different views on the same object in sync? For example i want to provide a slider and a textfield for a numerical value. (I probably hoped something like Cocoa Bindings would exist.) -- View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by Benjamin

Yes :S The problem is mutable objects, what can you do then â¦ For Spec I introduced value holders :) But for the basic one, it work only if you set a new value, not if what is inside the value holder mutates. I alo introduce value holders for some collections, but for the rest, I still do not know (maybe JB's handle could cover that ^^) Ben On Mar 21, 2013, at 12:46 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > > On 21 Mar 2013, at 12:08, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > >> Yes, endless loop with step as far as I remember >> >> stepAt: millisecondClockValue in: aWindow >> | newText | >> >> (CodeHolder smartUpdating and: [(millisecondClockValue - self timeOfLastListUpdate) > 8000]) "Not more often than once every 8 seconds" >> ifTrue: >> [self updateListsAndCodeIn: aWindow. >> timeOfLastListUpdate := millisecondClockValue]. >> >> newText := self contentsIsString >> ifTrue: [self selection] >> ifFalse: ["keep it short to reduce time to compute it" >> self selectionPrintString ]. >> newText = contents ifFalse: >> [contents := newText. >> self changed: #contents] >> >> stepTimeIn: aSystemWindow >> ^ (selectionUpdateTime ifNil: [0]) * 10 max: 1000 >> >> Tadaaa :) >> The old Browser was doing the same, and a lot of Morphs are doing this :s > > Yeah ;-) > > Now, from the user/developer standpoint it is of course nice to have an IDE that is as close as possible to a live objects environment. For browsers, announcement are a solution. For inspectors or debuggers showing arbitrary instance variables of objects, the question of how to implement that behaviour seems like an open question. > >> Ben >> >> On Mar 21, 2013, at 12:00 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: >> >>> Ben, >>> >>> But then how does this work ? >>> >>> | point | >>> point := 1@2. >>> point inspect. >>> [ 5 seconds asDelay wait. >>> point setX: 10 setY: 20 ] fork. >>> >>> You can see the inspector change its printString, without ValueHolders>>contents: being involved, just a direct instance variable assignment. >>> >>> Sven >>> >>> On 21 Mar 2013, at 11:41, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: >>> >>>> For this kind of situation, my solution is to use a valueHolder >>>> >>>> instead of storing your string directly in an inst var, store it into the value holder >>>> >>>> initialize >>>> string := '' asValueHolder >>>> >>>> string: aString >>>> string contents: aString >>>> >>>> string >>>> ^ string contents >>>> >>>> And then what you can do in your initialise is >>>> >>>> string whenChangedDo: [:newValue | self label contents: newValue ] >>>> >>>> Something like this should work ^^ >>>> >>>> >>>> The other solution (which is baaad, but can still be seen) is to have a step method refreshing the Morph. >>>> But this is really not efficient >>>> >>>> Hope it helps, >>>> Ben >>>> >>>> On Mar 21, 2013, at 11:24 AM, MartinW <wm(a)fastmail.fm> wrote: >>>> >>>>> I asked the same question on Stackoverflow >>>>> (http://stackoverflow.com/questions/15534305/how-to-bind-a-labelmorph-textmo…) >>>>> but as i do not know how much the audiences overlap i hope you do not mind >>>>> if i repeat it here: >>>>> >>>>> How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >>>>> changes of the variable? >>>>> >>>>> - I have an object with a variable containing a String. >>>>> - I have a window containing a LabelMorph/TextMorph (or some other Morph >>>>> that displays Text?). >>>>> How do i bind the LabelMorph/TextMorph to the variable, so that the label >>>>> updates when the String in the variable changes? >>>>> >>>>> - classic Smalltalk-80 dependent/change/update mechanism? >>>>> - Pharo Announcement framework? >>>>> - something different?? >>>>> How would i do this? Which Morph should i use? >>>>> >>>>> Martin. >>>>> >>>>> >>>>> >>>>> -- >>>>> View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… >>>>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>>>> >>>> >>> >>> >> > >

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by Sven Van Caekenberghe

On 21 Mar 2013, at 12:08, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > Yes, endless loop with step as far as I remember > > stepAt: millisecondClockValue in: aWindow > | newText | > > (CodeHolder smartUpdating and: [(millisecondClockValue - self timeOfLastListUpdate) > 8000]) "Not more often than once every 8 seconds" > ifTrue: > [self updateListsAndCodeIn: aWindow. > timeOfLastListUpdate := millisecondClockValue]. > > newText := self contentsIsString > ifTrue: [self selection] > ifFalse: ["keep it short to reduce time to compute it" > self selectionPrintString ]. > newText = contents ifFalse: > [contents := newText. > self changed: #contents] > > stepTimeIn: aSystemWindow > ^ (selectionUpdateTime ifNil: [0]) * 10 max: 1000 > > Tadaaa :) > The old Browser was doing the same, and a lot of Morphs are doing this :s Yeah ;-) Now, from the user/developer standpoint it is of course nice to have an IDE that is as close as possible to a live objects environment. For browsers, announcement are a solution. For inspectors or debuggers showing arbitrary instance variables of objects, the question of how to implement that behaviour seems like an open question. > Ben > > On Mar 21, 2013, at 12:00 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > >> Ben, >> >> But then how does this work ? >> >> | point | >> point := 1@2. >> point inspect. >> [ 5 seconds asDelay wait. >> point setX: 10 setY: 20 ] fork. >> >> You can see the inspector change its printString, without ValueHolders>>contents: being involved, just a direct instance variable assignment. >> >> Sven >> >> On 21 Mar 2013, at 11:41, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: >> >>> For this kind of situation, my solution is to use a valueHolder >>> >>> instead of storing your string directly in an inst var, store it into the value holder >>> >>> initialize >>> string := '' asValueHolder >>> >>> string: aString >>> string contents: aString >>> >>> string >>> ^ string contents >>> >>> And then what you can do in your initialise is >>> >>> string whenChangedDo: [:newValue | self label contents: newValue ] >>> >>> Something like this should work ^^ >>> >>> >>> The other solution (which is baaad, but can still be seen) is to have a step method refreshing the Morph. >>> But this is really not efficient >>> >>> Hope it helps, >>> Ben >>> >>> On Mar 21, 2013, at 11:24 AM, MartinW <wm(a)fastmail.fm> wrote: >>> >>>> I asked the same question on Stackoverflow >>>> (http://stackoverflow.com/questions/15534305/how-to-bind-a-labelmorph-textmo…) >>>> but as i do not know how much the audiences overlap i hope you do not mind >>>> if i repeat it here: >>>> >>>> How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >>>> changes of the variable? >>>> >>>> - I have an object with a variable containing a String. >>>> - I have a window containing a LabelMorph/TextMorph (or some other Morph >>>> that displays Text?). >>>> How do i bind the LabelMorph/TextMorph to the variable, so that the label >>>> updates when the String in the variable changes? >>>> >>>> - classic Smalltalk-80 dependent/change/update mechanism? >>>> - Pharo Announcement framework? >>>> - something different?? >>>> How would i do this? Which Morph should i use? >>>> >>>> Martin. >>>> >>>> >>>> >>>> -- >>>> View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… >>>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>>> >>> >> >> >

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by Stephan Eggermont

Martin Walk asked: >How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >changes of the variable? That is a very low-level question. Do you just want to know, or do you want to use it? When building UI's in Pharo, the first question should probably be: can I get away with building it in Glamour. That is a high-level UI toolkit specialized in creating browsers. If you can, it is much less work. Stephan Eggermont

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by Benjamin

Yes, endless loop with step as far as I remember stepAt: millisecondClockValue in: aWindow | newText | (CodeHolder smartUpdating and: [(millisecondClockValue - self timeOfLastListUpdate) > 8000]) "Not more often than once every 8 seconds" ifTrue: [self updateListsAndCodeIn: aWindow. timeOfLastListUpdate := millisecondClockValue]. newText := self contentsIsString ifTrue: [self selection] ifFalse: ["keep it short to reduce time to compute it" self selectionPrintString ]. newText = contents ifFalse: [contents := newText. self changed: #contents] stepTimeIn: aSystemWindow ^ (selectionUpdateTime ifNil: [0]) * 10 max: 1000 Tadaaa :) The old Browser was doing the same, and a lot of Morphs are doing this :s Ben On Mar 21, 2013, at 12:00 PM, Sven Van Caekenberghe <sven(a)stfx.eu> wrote: > Ben, > > But then how does this work ? > > | point | > point := 1@2. > point inspect. > [ 5 seconds asDelay wait. > point setX: 10 setY: 20 ] fork. > > You can see the inspector change its printString, without ValueHolders>>contents: being involved, just a direct instance variable assignment. > > Sven > > On 21 Mar 2013, at 11:41, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > >> For this kind of situation, my solution is to use a valueHolder >> >> instead of storing your string directly in an inst var, store it into the value holder >> >> initialize >> string := '' asValueHolder >> >> string: aString >> string contents: aString >> >> string >> ^ string contents >> >> And then what you can do in your initialise is >> >> string whenChangedDo: [:newValue | self label contents: newValue ] >> >> Something like this should work ^^ >> >> >> The other solution (which is baaad, but can still be seen) is to have a step method refreshing the Morph. >> But this is really not efficient >> >> Hope it helps, >> Ben >> >> On Mar 21, 2013, at 11:24 AM, MartinW <wm(a)fastmail.fm> wrote: >> >>> I asked the same question on Stackoverflow >>> (http://stackoverflow.com/questions/15534305/how-to-bind-a-labelmorph-textmo…) >>> but as i do not know how much the audiences overlap i hope you do not mind >>> if i repeat it here: >>> >>> How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >>> changes of the variable? >>> >>> - I have an object with a variable containing a String. >>> - I have a window containing a LabelMorph/TextMorph (or some other Morph >>> that displays Text?). >>> How do i bind the LabelMorph/TextMorph to the variable, so that the label >>> updates when the String in the variable changes? >>> >>> - classic Smalltalk-80 dependent/change/update mechanism? >>> - Pharo Announcement framework? >>> - something different?? >>> How would i do this? Which Morph should i use? >>> >>> Martin. >>> >>> >>> >>> -- >>> View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… >>> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >>> >> > >

March 21, 2013

Re: [Pharo-users] How can my Morph reflect changes in the object it displays?

by Sven Van Caekenberghe

Ben, But then how does this work ? | point | point := 1@2. point inspect. [ 5 seconds asDelay wait. point setX: 10 setY: 20 ] fork. You can see the inspector change its printString, without ValueHolders>>contents: being involved, just a direct instance variable assignment. Sven On 21 Mar 2013, at 11:41, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > For this kind of situation, my solution is to use a valueHolder > > instead of storing your string directly in an inst var, store it into the value holder > > initialize > string := '' asValueHolder > > string: aString > string contents: aString > > string > ^ string contents > > And then what you can do in your initialise is > > string whenChangedDo: [:newValue | self label contents: newValue ] > > Something like this should work ^^ > > > The other solution (which is baaad, but can still be seen) is to have a step method refreshing the Morph. > But this is really not efficient > > Hope it helps, > Ben > > On Mar 21, 2013, at 11:24 AM, MartinW <wm(a)fastmail.fm> wrote: > >> I asked the same question on Stackoverflow >> (http://stackoverflow.com/questions/15534305/how-to-bind-a-labelmorph-textmo…) >> but as i do not know how much the audiences overlap i hope you do not mind >> if i repeat it here: >> >> How to bind a LabelMorph/TextMorph to a variable so that the Morph reflects >> changes of the variable? >> >> - I have an object with a variable containing a String. >> - I have a window containing a LabelMorph/TextMorph (or some other Morph >> that displays Text?). >> How do i bind the LabelMorph/TextMorph to the variable, so that the label >> updates when the String in the variable changes? >> >> - classic Smalltalk-80 dependent/change/update mechanism? >> - Pharo Announcement framework? >> - something different?? >> How would i do this? Which Morph should i use? >> >> Martin. >> >> >> >> -- >> View this message in context: http://forum.world.st/How-can-my-Morph-reflect-changes-in-the-object-it-dis… >> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >> >

March 21, 2013