Hi Usman,
On 08/13/2014 02:16 AM, Usman Bhatti wrote:
Hi Offray,
As Doru mentioned, without a complete example it is difficult to reproduce and
analyze your problem.
My main issue is that I don't know how to share a complete example
except by sharing this url:
http://smalltalkhub.com/#!/~Offray/Ubakye/
and advising to upload the code and run "UbakyeBrowser open". In file
based frameworks I can point to a specific file which contains the
model of my defined objects, but I don't know how to share my own
defined objects/messages in Smalltalk except by this or by manually
cutting and pasting to email (it should be a better way).
Anyway this is the part where I define a UbakyeNode:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Object subclass: #UbakyeNode
instanceVariableNames: 'header headers key icon body children parent
node'
classVariableNames: ''
category: 'Ubakye-Model'
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
and the children method is the one which uses a colection:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
UbakyeNode>>children
"Returns the receivers list of children"
^ children ifNil: [children := OrderedCollection new]
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
For the tree to get updated on node addition or removal, you need to use
GLMAnnouncingCollection to group your nodes. Hence, when you add a new node in
your announcing collection object, this code comes into effect:
updateOn: GLMItemAdded from: #yourself;
So, make sure you are using appropriate collection object.
I tried changing OrderedCollection in the children message by
GLMAnnouncingCollection, but the header message started to fail. Can I
pass my children collection to a GLMAnnouncingCollection just in the
interface or need I to change the object definition for the UbakyeNode,
and if this is the case, how can I access the header of a UbakyeNode
stored in this kind of collection? I know is kind of dumb to ask without
proper context, but I hope that the SmalltalkHub repository (or other
method) can be used to share my own defined object to make better questions.
usman
Cheers,
Offray
