I'd explicitly bind escape to the Cancel button; I think Apple's Interface
Builder does that when you type string "Cancel" as the title.
Also, doesn't the NSPanel already have performClose:? Shouldn't your
-cancelPressed: look like this?
- (IBAction)cancelPressed:(id)sender
{
* [panel performClose:sender];*
[NSApp stopModalWithCode:NSAlertAlternateReturn];
}
I think I read somewhere in Apple docs that they discourage direct calls
upon -close, because -performClose: theoretically allows additional checks
to be done, while -close closes the window immediately.
It may also be notable that NSSavePanel.m from GNUstep contains this
function -- is the order of the calls the key thing here?
- (void) cancel: (id)sender
{
ASSIGN(_directory, pathToColumn(_browser, [_browser lastColumn]));
[self _updateDefaultDirectory];
* [NSApp stopModalWithCode: NSCancelButton];*
[_okButton setEnabled: NO];
* [self close];*
}
In a Mac app, I'd look into window-modal sheets instead of
application-modal windows. Also, most of the time, one can and should avoid
application-modal windows of any kind, as Wolfgang already mentioned. What
does this particular panel do?
On Wed, Jun 12, 2013 at 9:39 AM, Riccardo Mottola <
[email protected]> wrote:
> Hi,
>
> I have a simple controller which should display a modal panel, decoded
> from a nib/gorm interface file (for reference GetNameController.m in FTP in
> GAP).
>
> the controller has this method:
> -(NSInteger)runAsModal
> {
> NSInteger result;
>
> [panel makeFirstResponder: textField];
> result = [NSApp runModalForWindow: panel];
> return result;
> }
>
> and each ok/cancel button does:
> -(IBAction)cancelPressed:(id)**sender
> {
> [panel close];
> [NSApp stopModalWithCode: NSAlertAlternateReturn];
> }
>
> looks simple and it should work, doesn't it? Well, Almost.
>
> On the mac, the following may happen: the user hits the "close" button of
> the window or hits "esc". In that case, the panel disappears, but the app
> is still in the modal run loop (all interfaces disabled). The only thing I
> can do is terminate the application.
> I guess instead that I should be able to trap that closure and return
> either NSAlertAlternateReturn or NSAlertErrorReturn. What do you think? and
> how? I tried to implement "performClose" but it doesn't get called in the
> delegate.
>
> Thus I think my code is somehow incorrect, however on GNUstep I notice
> 1) it works? I can close the panel without problems
> 2) esc doesn't close the panel, even if the Apple doc says it should.
>
> "If a panel is the key window and has a close button, it closes itself
> when the user presses the Escape key."
>
> Riccardo
>
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Ivan Vučica
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