Hello,
I've created a Morph (an indirect subclass of Morph) and I want it to have an extra halo for bringing up a special menu (or dialog, or etc.). How can I do this?
Thanks, Aidan
On Thursday 02 Oct 2008 6:44:58 am Aidan Gauland wrote:
Hello,
I've created a Morph (an indirect subclass of Morph) and I want it to have an extra halo for bringing up a special menu (or dialog, or etc.). How can I do this?
For adding a new button called BBB, you need to 1. add a halospec for addBBBHandle to Preferences class (see senders of addScriptorHandle: for the list) 2. add wantsBBBHaloHandle to Morph (returning false) 3. add method addBBBHandle to HaloMorph (see addScriptorHandle: for an example). 4. Add wantsBBBHaloHandle method (returning true) and a event handler to your Morph
See senders and implementors of addScriptorHandle: for an example.
HTH .. Subbu
K. K. Subramaniam wrote:
For adding a new button called BBB, you need to
- add a halospec for addBBBHandle to Preferences class (see senders of
addScriptorHandle: for the list)
How can I do (and undo) this programmatically?
- add wantsBBBHaloHandle to Morph (returning false)
- add method addBBBHandle to HaloMorph (see addScriptorHandle: for an
example). 4. Add wantsBBBHaloHandle method (returning true) and a event handler to your Morph
What do you mean by "event handler", and how do I create one for this?
See senders and implementors of addScriptorHandle: for an example.
There does not seem to be any such method. Did you mean addScriptHandle:?
Thanks, Aidan
On Saturday 04 Oct 2008 10:55:28 am Aidan Gauland wrote:
K. K. Subramaniam wrote:
For adding a new button called BBB, you need to
- add a halospec for addBBBHandle to Preferences class (see senders of
addScriptorHandle: for the list)
How can I do (and undo) this programmatically?
I don't know of any simple way to do this. The specs are in a method, not in a global variable. So you will have to recompile the method to add new specs.
- add wantsBBBHaloHandle to Morph (returning false)
- add method addBBBHandle to HaloMorph (see addScriptorHandle: for an
example). 4. Add wantsBBBHaloHandle method (returning true) and a event handler to your Morph
What do you mean by "event handler", and how do I create one for this?
The part in addScriptHandle: .... on: #mouseUp send: #editButtonsScript to: innerTarget
#mouseUp is an event and editButtonsScript is a event handler. innerTarget is the morph around which the halo appears. It should have a editButtonsScript method to handle the event.
See senders and implementors of addScriptorHandle: for an example.
There does not seem to be any such method. Did you mean addScriptHandle:?
Yes. Sorry about the typo. I hope it didn't misdirect you for too long.
Subbu
K. K. Subramaniam wrote:
On Saturday 04 Oct 2008 10:55:28 am Aidan Gauland wrote:
K. K. Subramaniam wrote:
For adding a new button called BBB, you need to
- add a halospec for addBBBHandle to Preferences class (see senders of
addScriptorHandle: for the list)
How can I do (and undo) this programmatically?
I don't know of any simple way to do this. The specs are in a method, not in a global variable. So you will have to recompile the method to add new specs.
I think I might have found out how: run PreferencesClass>>installHaloSpecsFromArray: passing it an array in the same format as the one that Preferences class>>customHaloSpecs or PreferencesClass>>classicHaloSpecs retruns.
This way, you can include halos in a package. (I think, I don't know about removing them later.)
Thanks for the pointers (or references, in Smalltalk). -Aidan
You are facing the nonOOP aspect of certain ugly parts of queak. The fact that halosmorph cannot be defined per class is striking. Nice to have a kind of global var, this is were squeak lost OOP. Once someone fixed that but it was never integrated (probably in 3.7 or 3.8 days). For my book I wanted special halos and I had to hack the global system. :( Terribly sad.
Stef
On Oct 6, 2008, at 12:24 AM, Aidan Gauland wrote:
K. K. Subramaniam wrote:
On Saturday 04 Oct 2008 10:55:28 am Aidan Gauland wrote:
K. K. Subramaniam wrote:
For adding a new button called BBB, you need to
- add a halospec for addBBBHandle to Preferences class (see
senders of addScriptorHandle: for the list)
How can I do (and undo) this programmatically?
I don't know of any simple way to do this. The specs are in a method, not in a global variable. So you will have to recompile the method to add new specs.
I think I might have found out how: run PreferencesClass>>installHaloSpecsFromArray: passing it an array in the same format as the one that Preferences class>>customHaloSpecs or PreferencesClass>>classicHaloSpecs retruns.
This way, you can include halos in a package. (I think, I don't know about removing them later.)
Thanks for the pointers (or references, in Smalltalk). -Aidan
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