Hi everyone,
Doug is correct about the functionality of the black
board. That's exactly what it was design for.
__
Raymond Irving
--- [EMAIL PROTECTED] wrote:
>
>
> More verbose.. also checked code to verfiy.. the
> part about a transparent
> coverlayer was just smoke (won't say what kind of
> smoke..)
>
> So..
>
> As we know, if you add a child layer or widget to a
> layer, then set the html
> of that layer, the existing html (the child ler or
> widget) get's deleted.
> Obviously this can cause some issues if your coed
> expects said layer or widget
> to be there.
>
> The solution to this is to call enabledBlackBoard on
> the parent layer.
> Having done this, when you call setHTML() on a layer
> that has it's Blackboard
> enabled, the html that you specify is placed within
> the blackboard instead of
> replacing the html of your parent layer.
>
> Man reading the above just confuses me.. and i wrote
> it :-)
> new visual:
>
> case 1 (no blackboard)
> create a layer and add a widget:
> (result)
> [myLayer]
> [myWidget][/myWidget]
> [/myLayer]
>
> then call myLayer.setHTML("where's the widget?")
> (result: note the widget is gone)
> [myLayer]
> Where's the widget?
> [/myLayer]
>
> case 2 (with blackboard)
> create a layer, add a widget, enable blackboard
> [myLayer]
> [myWidget][/myWidget]
> [_blkBoardElm][/_blkBoardElm]
> [/myLayer]
> then call myLayer.setHTML("there's the widget!")
> [myLayer]
> [myWidget][/myWidget]
> [_blkBoardElm]there's the widget![/_blkBoardElm]
> [/myLayer]
>
> One thing i do notice while looking at the code is
> that we do not specifiy the
> Z-Order of the blackboard. This can cause a problem
> if the blackboard is added
> after a widget or childlayer has been added as the
> blackboard may overlap said
> child layers.
>
> notes:
> if blackboard is enabled after a sethtml call (or
> layer is created with
> default html in the new dynlayer() call) then the
> html will be transferred to
> the blackboard.
>
> Recommend specifying a largely negative Z-Order on
> the blackboard layer
>
> Cheers
>
> Leif W <[EMAIL PROTECTED]> said:
>
> > > From: <[EMAIL PROTECTED]>
> > > Sent: 2005 August 24 Wednesday 11:06
> > >
> > > here it is.. the blackboard as described below
> is to allow you to add
> > > a child
> > > layer to a layer, and then later call sethtml on
> the parent layer
> > > without
> > > accidently deleting the child layers :-)
> >
> > >> before EnableBlackboard()
> > >> [myLayer]content[/myLayer]
> > >>
> > >> After EnabledBlackboard
> > >> [myLayer]
> > >> [TransparentCoverLayer]
> > >> [BlackBoard]
> > >> Content
> > >> [BlackBoard]
> > >> [TransparentCoverLayer]
> > >> [myLayer]
> >
> > Wow, excellent, thanks for that explanation and
> visual.
> >
> > Leif
> >
> >
> >
> >
> >
> >
>
-------------------------------------------------------
> > SF.Net email is Sponsored by the Better Software
> Conference & EXPO
> > September 19-22, 2005 * San Francisco, CA *
> Development Lifecycle Practices
> > Agile & Plan-Driven Development * Managing
> Projects & Teams * Testing & QA
> > Security * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> > _______________________________________________
> > Dynapi-Help mailing list
> > Dynapi-Help@lists.sourceforge.net
> >
>
https://lists.sourceforge.net/lists/listinfo/dynapi-help
> >
>
>
>
> --
>
>
>
>
>
>
-------------------------------------------------------
> SF.Net email is Sponsored by the Better Software
> Conference & EXPO
> September 19-22, 2005 * San Francisco, CA *
> Development Lifecycle Practices
> Agile & Plan-Driven Development * Managing Projects
> & Teams * Testing & QA
> Security * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> _______________________________________________
> Dynapi-Help mailing list
> Dynapi-Help@lists.sourceforge.net
>
https://lists.sourceforge.net/lists/listinfo/dynapi-help
>
-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
Dynapi-Help mailing list
Dynapi-Help@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dynapi-help
