Re: Sheets and hidden apps

FROM : John Stiles
DATE : Wed Nov 03 23:50:49 2004

I was able to come up with a workaround, but it'd be nice if someone
could confirm that this is an AppKit problem.
I'll make a test app and get this on Radar shortly. It'd be really nice
if it were fixed for Tiger.


void InstallerHideProgress()
{
   [s_installer performSelectorOnMainThread:@selector(progressSheetHide:)
withObject:NULL waitUntilDone:YES];
}

- (void) progressSheetHide:(id)object
{
   // AppKit has a bug where if you try to roll up a sheet on a window
and the app is hidden, it will unhide the app
   // but the sheet won't roll up. If you manually set the app to
frontmost (by key-and-order-fronting the parent window),
   // that isn't quite good enough either. You have to set the app to
frontmost, give the event system time to actually
   // bring the window frontmost--that actually happens a little later,
after you relinquish control to the event loop--
   // and after that's done, THEN you can roll up the sheet and it will
actually work. Gah!
   [_window makeKeyAndOrderFront:self];

   // Actually roll up the sheet 1ms later.
   [s_installer performSelector:@selector(progressSheetHidePhase2:)
withObject:NULL afterDelay:0.001];
}


- (void) progressSheetHidePhase2:(id)object
{
   // See above ranting (err comments).
   [NSApp endSheet:_progressSheet returnCode:0];    
   [_progressSheet orderOut:self];
}


On Nov 3, 2004, at 11:33 AM, John Stiles wrote:

> My installer app has a sheet that shows progress. It drops down, my
> app does its work while the progress bar fills up, and then when my
> app is done it rolls up the sheet.
> I've had some end users report that they'll start an installation,
> hide my application (via cmd+H), come back to it later and the install
> has completed 100%, but the sheet is still there. I know that my app
> has asked to hide the sheet because the parent window behind the sheet
> has been updated :) It works fine if you don't hide the app.
> Here's the code in question. Why is this happening? It's occurring in
> 10.3.5.
> PS yes, the variable naming conventions suck a bit; if I redid it
> today they'd be named differently. Whatever. :)
>
>
>
> void InstallerShowProgress()
> {    
>     [s_installer
> performSelectorOnMainThread:@selector(progressSheetShow:)
> withObject:NULL waitUntilDone:YES];
> }
>
> void InstallerHideProgress()
> {
>     [s_installer
> performSelectorOnMainThread:@selector(progressSheetHide:)
> withObject:NULL waitUntilDone:YES];
> }
>
> - (void) progressSheetShow:(id)object
> {
>     [_window                  makeKeyAndOrderFront:self]; // sheets act
> goofy if the parent is minimized
>     [_progressSheetBar        setDoubleValue:0.0];
>     [_progressSheetStopButton setEnabled:YES];
>     
>     [NSApp    beginSheet:_progressSheet
>           modalForWindow:_window
>             modalDelegate:self
>           didEndSelector:NULL
>               contextInfo:NULL];    
> }
>
> - (void) progressSheetHide:(id)object
> {
>     [NSApp endSheet:_progressSheet returnCode:0];    
>     [_progressSheet orderOut:self];
> }
>
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