Tim,
One of the articles on Morphic says you can create composite morphs
either programatically,
using addMorph, or using drag and drop from the Objects menu of the
morphic World. I have
done the latter, because it is easier to design my layout that way. Once
that has been done,
how do I address the submorph from a browser? If I inspect my button
submorph, for example
, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I
have no idea how to
access that object in order to do anything with it. This is the crux of
my questions.
This is, in my opinion, the most significant limitation of Morphic for interactive GUI creation. In the original Morphic in Self the way to handle this was to simply search through all your submorphs for the one you were interested in, usually by comparing the morphType string. In Squeak we can add properties to Morphs very easily so that would be one way to tag it. Something like:
| stopButton | stopButton := nil. self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ stopButton := m ] ]. stopButton ifNotNilDo: [ :b | b ... ].
Code like this will work even if there are no stopButtons at all and if you add more than one the code will just use the last one and ignore the others.
After creating the button you have to get its halo and use the red button (menu) with the debug->inspect morph option to set the #stopButton property.
An alternative to using specially created properties is to depend on the morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. So:
self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: ...
should work for you as long as there is only one button.
-- Jecel
Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts.
So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs.
Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic.
Tim Cuthbertson
Assuming you have named your instances of TextMorph and embedded them in the PasteUpMorph so that they are in the 'submorphs' collection of the PasteUpMorph
you may access them by name from the PasteUpMorph with
self submorphs detect: [:m | m externalName = 't1']
(access to morph named 't1').
This is a moderate effort and allows you to construct the GUI through direct manipulation.
Please note as well that in a recent trunk image the halo menu list of a SimpleButtonMorph has a 'set target' menu entry which allows you to set to any target by pointing at it.
--Hannes
On 2/22/17, Tim Cuthbertson ratcheer@gmail.com wrote:
Tim,
One of the articles on Morphic says you can create composite morphs
either programatically,
using addMorph, or using drag and drop from the Objects menu of the
morphic World. I have
done the latter, because it is easier to design my layout that way. Once
that has been done,
how do I address the submorph from a browser? If I inspect my button
submorph, for example
, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I
have no idea how to
access that object in order to do anything with it. This is the crux of
my questions.
This is, in my opinion, the most significant limitation of Morphic for interactive GUI creation. In the original Morphic in Self the way to handle this was to simply search through all your submorphs for the one you were interested in, usually by comparing the morphType string. In Squeak we can add properties to Morphs very easily so that would be one way to tag it. Something like:
| stopButton | stopButton := nil. self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ stopButton := m ] ]. stopButton ifNotNilDo: [ :b | b ... ].
Code like this will work even if there are no stopButtons at all and if you add more than one the code will just use the last one and ignore the others.
After creating the button you have to get its halo and use the red button (menu) with the debug->inspect morph option to set the #stopButton property.
An alternative to using specially created properties is to depend on the morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. So:
self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: ...
should work for you as long as there is only one button.
-- Jecel
Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts.
So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs.
Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic.
Tim Cuthbertson
On 23.02.2017, at 00:34, H. Hirzel hannes.hirzel@gmail.com wrote:
Assuming you have named your instances of TextMorph and embedded them in the PasteUpMorph so that they are in the 'submorphs' collection of the PasteUpMorph
you may access them by name from the PasteUpMorph with
self submorphs detect: [:m | m externalName = 't1']
self submorphNamed: 't1'
(access to morph named 't1').
This is a moderate effort and allows you to construct the GUI through direct manipulation.
Please note as well that in a recent trunk image the halo menu list of a SimpleButtonMorph has a 'set target' menu entry which allows you to set to any target by pointing at it.
--Hannes
On 2/22/17, Tim Cuthbertson ratcheer@gmail.com wrote:
Tim,
One of the articles on Morphic says you can create composite morphs
either programatically,
using addMorph, or using drag and drop from the Objects menu of the
morphic World. I have
done the latter, because it is easier to design my layout that way. Once
that has been done,
how do I address the submorph from a browser? If I inspect my button
submorph, for example
, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I
have no idea how to
access that object in order to do anything with it. This is the crux of
my questions.
This is, in my opinion, the most significant limitation of Morphic for interactive GUI creation. In the original Morphic in Self the way to handle this was to simply search through all your submorphs for the one you were interested in, usually by comparing the morphType string. In Squeak we can add properties to Morphs very easily so that would be one way to tag it. Something like:
| stopButton | stopButton := nil. self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ stopButton := m ] ]. stopButton ifNotNilDo: [ :b | b ... ].
Code like this will work even if there are no stopButtons at all and if you add more than one the code will just use the last one and ignore the others.
After creating the button you have to get its halo and use the red button (menu) with the debug->inspect morph option to set the #stopButton property.
An alternative to using specially created properties is to depend on the morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. So:
self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: ...
should work for you as long as there is only one button.
-- Jecel
Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts.
So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs.
Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic.
Tim Cuthbertson
<selecting_a_submorph_by_name_2017-02-23.png>_______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
On 2/23/17, Tobias Pape Das.Linux@gmx.de wrote:
On 23.02.2017, at 00:34, H. Hirzel hannes.hirzel@gmail.com wrote:
Assuming you have named your instances of TextMorph and embedded them in the PasteUpMorph so that they are in the 'submorphs' collection of the PasteUpMorph
you may access them by name from the PasteUpMorph with
self submorphs detect: [:m | m externalName = 't1']
self submorphNamed: 't1'
Thanks, Tobias
And accessing it as a sibling morph (i.e. from another morph embedded in the PasteUpMorph as well) would then be
self owner submorphNamed: 't1'
(access to morph named 't1').
This is a moderate effort and allows you to construct the GUI through direct manipulation.
Please note as well that in a recent trunk image the halo menu list of a SimpleButtonMorph has a 'set target' menu entry which allows you to set to any target by pointing at it.
--Hannes
On 2/22/17, Tim Cuthbertson ratcheer@gmail.com wrote:
Tim,
One of the articles on Morphic says you can create composite morphs
either programatically,
using addMorph, or using drag and drop from the Objects menu of the
morphic World. I have
done the latter, because it is easier to design my layout that way. Once
that has been done,
how do I address the submorph from a browser? If I inspect my button
submorph, for example
, all it will tell me about it is "a ScriptableButton<Button>(1364754)". I
have no idea how to
access that object in order to do anything with it. This is the crux of
my questions.
This is, in my opinion, the most significant limitation of Morphic for interactive GUI creation. In the original Morphic in Self the way to handle this was to simply search through all your submorphs for the one you were interested in, usually by comparing the morphType string. In Squeak we can add properties to Morphs very easily so that would be one way to tag it. Something like:
| stopButton | stopButton := nil. self submorphsDo: [ :m | (m hasProperty: #stopButton) ifTrue: [ stopButton := m ] ]. stopButton ifNotNilDo: [ :b | b ... ].
Code like this will work even if there are no stopButtons at all and if you add more than one the code will just use the last one and ignore the others.
After creating the button you have to get its halo and use the red button (menu) with the debug->inspect morph option to set the #stopButton property.
An alternative to using specially created properties is to depend on the morph's name. In your case it is "a ScriptableButton<Button>(1364754)".. So:
self subMorphsDo: [ :m | (m name includesSubString: 'Button') ifTrue: ...
should work for you as long as there is only one button.
-- Jecel
Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts.
So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs.
Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic.
Tim Cuthbertson
<selecting_a_submorph_by_name_2017-02-23.png>_______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
Tim,
Thank you, Jecel, for trying to help me solve my problem. However, my plan is to have multiple sibling morphs for both the buttons and the texts.
Code like this can get you a list of all buttons:
| buttons | buttons := submorphs select: [ :m | m name includesSubString: 'Button') ].
You can do the same thing to get a list of text fields, but the order of texts and buttons might not match. The order depends on when submorphs are added and removed and not on they physical position.
So, I am diving in to trying to use addMorph: programatically to add submorphs to my display. This allows me to hold a reference to each submorph in named variables, through which I should then be able to specify state changes and act on events to and from my submorphs.
Nearly all code you will find in Squeak uses this style. And note that if your main morph isn't temporary, you can still manually reorganize the submorphs even if they were created programatically. It might be tricky to have them stay the way you want as the main morph gets changed.
Maybe my mindset is just too old fashioned. Back in the 90's, I programmed MVC applications in VisualWorks. I thought Morphic was supposed to be much easier to use than MVC, but so far, I have not been able to figure out how to control my objects in Morphic.
When Morphic was introduced in Squeak, we already had a bunch of MVC applications that we wanted to keep using without having to significantly rewrite them. So the reasonably simple Morphic from Self became a much more complicated framework.
The layout concept in the original Morphic was borrowed from TeX. The idea is that by having nested boxes with three simple alternatives (fixed, shrink-wrap and stretch) in each dimension (horizontal and vertical) you could use direct manipulation to build most interesting GUI elements. The most significant exception is tables since you can only align on rows or on columns but not on both with nested boxes.
MVC, on the other hand, used pieces of code in a simple constraint system to define layouts. So Squeak Morphic ended up with a combination of both. And with a fix to the table problem. The unfortunate result is that it isn't always easy to figure out why the submorphs are positioned as they are.
Back to your problem: suppose you want a bunch of pairs of buttons and text fields, one under the other. You could do something like:
| col row button text fields | col := AlignmentMorph newColumn. fields Dictionary new. 1 to: 7 do: [ :i | row := AlignmentMorph newRow. col addMorph: row. button := PluggableButtonMorph new. text := TextFieldMorph new. row addMorph: button. row addMorph: text. fields at: button put: text. ].
There is probably a "self changed" missing somewhere in there. And it might be a good idea to put a stretching morph between the button and the text if you want the align the first to the left and the text to the right. With the table layout the 7 row morphs shown here are probably not needed. But I hope this gives you the basic idea.
-- Jecel
beginners@lists.squeakfoundation.org
-
H. Hirzel -
Jecel Assumpcao Jr. -
Tim Cuthbertson -
Tobias Pape