[news.eclipse.platform.swt] Re: Layout

[HS <partyhut@xxxxxxxxxxxxxxxx>]

Don't worry about my previous question. Found it. getMaximizedControl()

Another question. I am trying to use Jface ToolBarManger() with Action 
class to create a tool bar button to toggle the SashForm Maximized 
control. I passed in the sash form from my MainWindow( extends 
ApplicationWindow) to the Action class... but when I click on the 
button, it throw null pointer exception. message said the SashForm is 
null.... I guess the protected ToolBarManager createToolBarManager(int 
style) is called before protected Control createContents(Composite 
parent)... so the SashForm has not been constructed while passed into 
the Action class...
am I right? Can anybody point me to the right direction?

Cheers
HS



HS wrote:
> Hi there,
>
> I am having the same problem. so how did you detect C2's status when the 
> action is triggered(maximum or normal)? I am trying to use one button to 
> toggle it.
>
> Cheers,
> Henry
>
>
> frank Buloup wrote:
> > Thanks a lot Evelyne,
> >
> > I've coded your first idea and it is exactly what I want !
> >
> > I've fixed L to be a FillLayout and it doesn't matter with the 
> > parameter (SWT.HORIZONTAL or VERTICAL)
> > A RowLayout with SWT.HORIZONTAL parameter doesn't look good...
> >
> > In my opinion Layout are quite difficult to understand... I need to be 
> > used with them !
> >
> > Thanks,
> > frank
> >
> >
> > "Evelyne Merle" <dummy@xxxxxxxx> a écrit dans le message de news: 
> > ekos04$bu6$1@xxxxxxxxxxxxxxxxxxxx
> > > First idea : If C1 and C2 are same height or same width, and can be 
> > > resized on user interaction
> > >
> > > Use a SashForm instead of composite for C. (take a look at setWeights 
> > > for objects ratios)
> > > To maximize C2, use SashForm method setMaximizedControl(C2)
> > > To return to initial state, use setMaximized(null)
> > >
> > > Second idea : C is managed by a GridLayout (=L)
> > > Use setLayoutData on C1 with GridData and exclude top set to true or 
> > > false depending on C1 visibility.
> > > When C1 visiblity is changed, set exclude top to the right value dans 
> > > call layout() on C.
> > > C1 will be excluded from the layout processing.
> > >
> > > By the way, which layout is currently under L ?
> > >
> > > Evelyne.
> > >
> > > "frank Buloup" <buloup@xxxxxxxxxxxxxxxx> a écrit dans le message de 
> > > news: ekoqqr$9ia$1@xxxxxxxxxxxxxxxxxxxx
> > > > Hi,
> > > >
> > > > Imagine you have two composite C1 and C2 in a parent composite C
> > > > with a layout L.
> > > >
> > > > C2 has a button with a mouse up listener. This listener is here to 
> > > > toggle visibility
> > > > of C1 and to ask L to redraw.
> > > >
> > > > But :
> > > > this redraw must force C2 to occupy the all client area of C if C1 
> > > > visibility
> > > > is false or to get previous state if C1 visibility is true.
> > > >
> > > > I have not been able to do that ! It seems to be easy but...
> > > >
> > > > any ideas ?
> > > >
> > > > thanks a lot,
> > > > regards
> > > > frank