Hide and show subviews

> I am trying to hide and show views dynamically.  I execute the
> following code and it hides and shows data just fine.  The problem is
> that after view is hidden an empty space is displayed.  I'd like
> parent view to reposition its subviews using current layout manager.
>
> shell := Shell show.
> shell view layoutManager: ProportionalLayout new.
> shell view
>     addSubView: (ContainerView new
>         backcolor: Color red;
>         yourself)
>     name: 'left'.
> shell view addSubView: Splitter new.
> shell view
>     addSubView: (ContainerView new
>         backcolor: Color blue;
>         layoutManager: BorderLayout new;
>         yourself)
>     name: 'right'.
> (shell view viewNamed: 'right') hide.

>Hi,
>
>I am trying to hide and show views dynamically.  I execute the
>following code and it hides and shows data just fine.  The problem is
>that after view is hidden an empty space is displayed.  I'd like
>parent view to reposition its subviews using current layout manager.
>
>shell := Shell show.
>shell view layoutManager: ProportionalLayout new.
>shell view
>    addSubView: (ContainerView new
>        backcolor: Color red;
>        yourself)
>    name: 'left'.
>shell view addSubView: Splitter new.
>shell view
>    addSubView: (ContainerView new
>        backcolor: Color blue;
>        layoutManager: BorderLayout new;
>        yourself)
>    name: 'right'.
>(shell view viewNamed: 'right') hide.

>On Mon, 09 Jun 2003 10:33:29 -0700, Sergei Gnezdov
><[hidden email]> wrote:
>
>>Hi,
>>
>>I am trying to hide and show views dynamically.  I execute the
>>following code and it hides and shows data just fine.  The problem is
>>that after view is hidden an empty space is displayed.  I'd like
>>parent view to reposition its subviews using current layout manager.
>>

>
>I found a solution with one strange behavior:
>
>shell := Shell show.
>shell view rectangle: (Rectangle origin: 9@60 corner: 336@200).
>shell view layoutManager: ProportionalLayout new.
>shell view
>    addSubView: (ContainerView new
>        backcolor: Color red;
>        yourself)
>    name: 'left'.
>blueContainer := ContainerView new
>        backcolor: Color blue;
>        layoutManager: BorderLayout new;
>        yourself.
>shell view
>    addSubView: (blueContainer)
>    name: 'right'.
>shell view removeSubView: (blueContainer).
>shell view
>    addSubView: (blueContainer)
>    name: 'right'.
>shell view invalidate.
>
>The last line is required in order for the blue container to show up.
>At the same adding blueConainer for the first time does not require
>invalidate call.

>Hi Sergei,
>
>In taking a quick look at what the layout managers do, it seems they don't
>take into account whether the subviews are showing or hidden, so I don't
>think there's an easy way to do what you want.  However, there do seem
>several ways to accomplish what you're trying to do in the little example
>you gave, though I don't know if this'll do it for your actual app.
>
>One way is to hide the subview AND the splitter and change the arrangement
>of the remaining subview to some large number.  This will effectively force
>the subview that's showing to take up almost all of the parent view's space.
>I say "almost" because the splitter is still there, even though hidden and
>even if you set its width to 0.  You can compensate for this by coloring the
>background of the view the same as the subview that's showing.  E.g., at the
>end of your example code, add:
>
>    (shell view viewNamed: 'right') hide.
>    (shell view viewNamed: 'left') arrangement: 999999.
>    shell view subViews second hide; width: 0. "splitter"
>    shell view backcolor: Color red.
>
>Hope this helps.
>
>-- Louis
>
>> I am trying to hide and show views dynamically.  I execute the
>> following code and it hides and shows data just fine.  The problem is
>> that after view is hidden an empty space is displayed.  I'd like
>> parent view to reposition its subviews using current layout manager.
>>
>> shell := Shell show.
>> shell view layoutManager: ProportionalLayout new.
>> shell view
>>     addSubView: (ContainerView new
>>         backcolor: Color red;
>>         yourself)
>>     name: 'left'.
>> shell view addSubView: Splitter new.
>> shell view
>>     addSubView: (ContainerView new
>>         backcolor: Color blue;
>>         layoutManager: BorderLayout new;
>>         yourself)
>>     name: 'right'.
>> (shell view viewNamed: 'right') hide.
>