How to set icon&lab at a CardContainer's TabView

Hi,
     I'm implementing an application shell with a cardcontainer.

     I wanted to change the label of each item of the tabview of the
cardcontainer dynamically so that I can change different image of each label
according the contents of each card ( e.g. I can show a red heart before the
label of the tab when the contents of the related card are not empty).

    I study the codes in TabView class and noted that it  set the new item's
image when the new item was added by sending the message #basicAdd:atIndex:
, but it change all of them via "(self getImageBlock value: anObject) " .

    If it is right to code via this way, then , how to get each TabView's
item at specific index ( i.e. what message to send) so I can modify its
image on the fly ( maybe via using  the method #onItemUpdatedAtIndex: ) ?

   Or,  is it possible using the getImageBlock:  to change each item's image
index per object base when the tabview was invalidated, i.e.
    1. By default, it's calling a class method #value: that will answer the
object class  icon imageindex.
    2. create an overloaded instance method  #icon to answer specific icon,
but what is the object for the tabview's item when new card was added in the
cardcontainer? how to wire them together?


Best regards,

Tk Kuo

On Mon, 15 Nov 2004 21:34:42 +0800, kuo <[hidden email]> wrote:

>     2. create an overloaded instance method  #icon to answer specific  
> icon,
> but what is the object for the tabview's item when new card was added in  
> the
> cardcontainer? how to wire them together?

The object is the #arrangement aspect of the tab's container view. You can  
set the #arrangement aspect of each tab to be an appropriate object that  
understands, say, #statusIcon: and set the #getImageBlock aspect to an  
appropriate block (or course you can just use #icon).  
CardContainer>>refreshTabs seems to does the refreshing, but its private.

--
Regards
HweeBoon
MotionObj

On Mon, 15 Nov 2004 22:49:04 +0800, Yar Hwee Boon <[hidden email]>  
wrote:

> The object is the #arrangement aspect of the tab's container view. You  
> can set the #arrangement aspect of each tab to be an appropriate object  
> that understands, say, #statusIcon: and set the #getImageBlock aspect to  
> an appropriate block (or course you can just use #icon).  
> CardContainer>>refreshTabs seems to does the refreshing, but its private.

Opps, that should be #statusIcon instead of #statusIcon:

--
Regards
HweeBoon
MotionObj

Hi, Yar Hwee Boon

"Yar Hwee Boon" <[hidden email]> wrote:
> The object is the #arrangement aspect of the tab's container view. You can
> set the #arrangement aspect of each tab to be an appropriate object that
> understands, say, #statusIcon: and set the #getImageBlock aspect to an
> appropriate block (or course you can just use #icon).
> CardContainer>>refreshTabs seems to does the refreshing, but its private.

Thanks for your reply.

I probe via "arrangement" that you mentioned,  found that it is a selector,
#arrangement of a view instance, which call the
layoutManager>>#arrangementOf:. This method is implemented in the CardLayout
in the way that will answer the card of a CardLayout not the tab item. (
see: CardLayout>>cards) not the object for the tab item that was wanted.

So, in the method, CardContainer>>refreshTabs, the arrangements that were
set as the list of the tabs model, were indeed cards only.

Therefore, the test following won't work..
( self view viewNamed: 'card1') tabs  model list at: 2 put: Object.
 "which supposed, will use Object class>>icon for the image index"
( self view viewNamed: 'card1') refreshTabs.
"the tab's image was not changed at all"

Do I miss something?

Best regards,

Tk Kuo

On Tue, 16 Nov 2004 00:46:58 +0800, kuo <[hidden email]> wrote:

Not sure I understand what you mean, but see below.

> Therefore, the test following won't work..
> ( self view viewNamed: 'card1') tabs  model list at: 2 put: Object.
>  "which supposed, will use Object class>>icon for the image index"
> ( self view viewNamed: 'card1') refreshTabs.
> "the tab's image was not changed at all"

Somehow if you change the list directly, the change seems to get lost.  
Change
     ( self view viewNamed: 'card1') tabs  model list at: 2 put: Object.
to:
     ( self view viewNamed: 'card1') tabs  model at: 2 put: Object.

and it works without needing #refreshTabs manually (because it is called  
in #onListChanged). This seems ok, but I'm not sure if its there's any  
implication with changing the list on the fly like this. What I suggested  
was a status object that keeps track or have access to the status and  
would return an appropriate icon. But either way, it seems to work :)

--
Regards
HweeBoon
MotionObj

"Yar Hwee Boon" <[hidden email]> wrote:
That's correct.
My test failed because I forgot to set the cardcontainer's viewmode from
#noIcons to  #smallIcons or #largeIcons.
And I've written a small test package in my ftp:
 ftp://tgkuo.dyndns.org/n-all/TkCardContainerTest/tgk-Test.pac
with the test codes in the class comment to prove that it is ok.

But I still didn't get your point of using status object, is it a kind of
design pattern of proxy?

I guessed you might change Object to this status object that "monitor" (
dependent?) on the status of the target ( the emptyOrNot status of the
contents of the container of each card in this example) and then it would
change its icon accordingly ( + triggering a tabRefresh) when the target
status changed.

Can you describe it more materially the way that you implement it to let me
know this good coding skills?

Best regards,

Tk Kuo

On Tue, 16 Nov 2004 19:45:14 +0800, kuo <[hidden email]> wrote:

> Can you describe it more materially the way that you implement it to let  
> me
> know this good coding skills?

I've put up what I think at http://motionobj.com/temp/ChangeTabIcons.zip .  
I'm using a boolean to store the status, if you have many different status  
maybe you can use a lookup table instead. I'm still exploring so I doubt  
this is very good code :) Welcome any comments.

--
Regards
HweeBoon
MotionObj

On Tue, 16 Nov 2004 22:43:56 +0800,  Yar Hwee Boon
<[hidden email]> wrote:

>I've put up what I think at http://motionobj.com/temp/ChangeTabIcons.zip .  
>I'm using a boolean to store the status, if you have many different status  
>maybe you can use a lookup table instead. I'm still exploring so I doubt  
>this is very good code :) Welcome any comments.

That's good.

I just learned that the arrangement aspect of each card , card1 and
card2 , in the VC could be set by evaluating ( actually doing Ctrl-S)
"self arrangement: HBStatus new label: 'abc'"  in its
PublishedAspectInspector' workspace.

The view's arrangement aspect is the key and was stored in the layout
manager as  an association with the view as the value in the variable
names of the CardLayout.

I also modify my test package's test codes to be more accurate
according to this.

Best regards,

Tk Kuo

On Wed, 17 Nov 2004 00:33:07 +0800, kuo <[hidden email]> wrote:

> I just learned that the arrangement aspect of each card , card1 and
> card2 , in the VC could be set by evaluating ( actually doing Ctrl-S)
> "self arrangement: HBStatus new label: 'abc'"  in its
> PublishedAspectInspector' workspace.

If you are in an aspect's workspace, you can just Ctrl-S with "HBStatus  
new label: 'abc'". This works in "normal" inspectors too.

--
Regards
HweeBoon
MotionObj