date:20100211

On 11/02/2010, at 9:45 PM, Gustavo Pizano wrote:

> [(XWSDefaultComponentView *)[component view] setString:[valueString string]];
> 
> 
> But when I display the NSTextViuew all the string its without any style, no 
> bold, no colors no nothing..
> 
> Any ideas what might I being doing wrong?

Sure. You're calling -setString: on the text view with just the string part of 
the attributed string you've carefully built. So all the attributes are getting 
discarded.

You need to do something like this:

[textView setRichText:YES];
[[textView textStorage] setAttributedString:valueString];

--Graham

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iPhone: badge icon for a button in toolbar

I know about placing a badge on the homescreen application icon, but is
there a way to set this up for a button in a toolbar... or do I just use my
own UIView to do the same thing and float it over the toolbar?

Eric
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Re: iPhone: badge icon for a button in toolbar

2010-02-11 Thread Mark Woollard

See UITabBarItem's badgeValue property.

Regards
Mark

On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:

> I know about placing a badge on the homescreen application icon, but is
> there a way to set this up for a button in a toolbar... or do I just use my
> own UIView to do the same thing and float it over the toolbar?
> 
> Eric
> ___
> 
> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
> 
> Please do not post admin requests or moderator comments to the list.
> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
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Re: iPhone: badge icon for a button in toolbar

Awesome  - thank you!

Now I am looking at how to access a certain UIBarButtonItem so I can set
it's badge.

In my app delegate I have a UITabBarController. In IB I can't seem to create
an IBOutlet and wire the button I want up so I can set it's badge string.
When I attempt to wire it up from File's Owner (MainWindow.xib), I only have
the option Outlets -delegate.

- (void)applicationDidFinishLaunching:(UIApplication *)application {

*// Add the tab bar controller's current view as a subview of the window
*

[window addSubview:tabBarController.view];

How do I access the button I want from the appDelegate?

On Thu, Feb 11, 2010 at 8:46 AM, Mark Woollard wrote:

> See UITabBarItem's badgeValue property.
>
> Regards
> Mark
>
> On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:
>
> > I know about placing a badge on the homescreen application icon, but is
> > there a way to set this up for a button in a toolbar... or do I just use
> my
> > own UIView to do the same thing and float it over the toolbar?
> >
> > Eric
> > ___
> >
> > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
> >
> > Please do not post admin requests or moderator comments to the list.
> > Contact the moderators at cocoa-dev-admins(at)lists.apple.com
> >
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> >
> > This email sent to mark.wooll...@mac.com
>
>

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Re: iPhone: badge icon for a button in toolbar

2010-02-11 Thread Roland King

add UIBarButtonItem outlets to whatever class Files Owner is

eg

@property( readwrite, retain ) IBOutlet UIBarButtonItem *item1;

then you will be able to hook them up in IB. 

On 11-Feb-2010, at 9:57 PM, Eric E. Dolecki wrote:

> Awesome  - thank you!
> 
> Now I am looking at how to access a certain UIBarButtonItem so I can set
> it's badge.
> 
> In my app delegate I have a UITabBarController. In IB I can't seem to create
> an IBOutlet and wire the button I want up so I can set it's badge string.
> When I attempt to wire it up from File's Owner (MainWindow.xib), I only have
> the option Outlets -delegate.
> 
> - (void)applicationDidFinishLaunching:(UIApplication *)application {
> 
>*// Add the tab bar controller's current view as a subview of the window
> *
> 
>[window addSubview:tabBarController.view];
> 
> 
> How do I access the button I want from the appDelegate?
> 
> 
> 
> On Thu, Feb 11, 2010 at 8:46 AM, Mark Woollard wrote:
> 
>> See UITabBarItem's badgeValue property.
>> 
>> Regards
>> Mark
>> 
>> On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:
>> 
>>> I know about placing a badge on the homescreen application icon, but is
>>> there a way to set this up for a button in a toolbar... or do I just use
>> my
>>> own UIView to do the same thing and float it over the toolbar?
>>> 
>>> Eric
>>> ___
>>> 
>>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>>> 
>>> Please do not post admin requests or moderator comments to the list.
>>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
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>> 
>> 
> 
> 
> -- 
> http://ericd.net
> Interactive design and development
> ___
> 
> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
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Re: iPhone: badge icon for a button in toolbar

The class is UIApplication in IB. So it seems I can't do that?

On Thu, Feb 11, 2010 at 9:01 AM, Roland King  wrote:

> add UIBarButtonItem outlets to whatever class Files Owner is
>
> eg
>
>@property( readwrite, retain ) IBOutlet UIBarButtonItem
> *item1;
>
> then you will be able to hook them up in IB.
>
> On 11-Feb-2010, at 9:57 PM, Eric E. Dolecki wrote:
>
> > Awesome  - thank you!
> >
> > Now I am looking at how to access a certain UIBarButtonItem so I can set
> > it's badge.
> >
> > In my app delegate I have a UITabBarController. In IB I can't seem to
> create
> > an IBOutlet and wire the button I want up so I can set it's badge string.
> > When I attempt to wire it up from File's Owner (MainWindow.xib), I only
> have
> > the option Outlets -delegate.
> >
> > - (void)applicationDidFinishLaunching:(UIApplication *)application {
> >
> >*// Add the tab bar controller's current view as a subview of the
> window
> > *
> >
> >[window addSubview:tabBarController.view];
> >
> >
> > How do I access the button I want from the appDelegate?
> >
> >
> >
> > On Thu, Feb 11, 2010 at 8:46 AM, Mark Woollard  >wrote:
> >
> >> See UITabBarItem's badgeValue property.
> >>
> >> Regards
> >> Mark
> >>
> >> On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:
> >>
> >>> I know about placing a badge on the homescreen application icon, but is
> >>> there a way to set this up for a button in a toolbar... or do I just
> use
> >> my
> >>> own UIView to do the same thing and float it over the toolbar?
> >>>
> >>> Eric
> >>> ___
> >>>
> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
> >>>
> >>> Please do not post admin requests or moderator comments to the list.
> >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
> >>>
> >>> Help/Unsubscribe/Update your Subscription:
> >>>
> http://lists.apple.com/mailman/options/cocoa-dev/mark.woollard%40mac.com
> >>>
> >>> This email sent to mark.wooll...@mac.com
> >>
> >>
> >
> >
> > --
> > http://ericd.net
> > Interactive design and development
> > ___
> >
> > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
> >
> > Please do not post admin requests or moderator comments to the list.
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> >
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>
>


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Interactive design and development
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Re: iPhone: badge icon for a button in toolbar

Ok - I hooked it up to the appdelegate... from another class I am doing this
(which bombs):

MyAppDelegate *ad = (MyAppDelegate *)[[UIApplication sharedApplication]
delegate];

UITabBar *tb = ad.tabBar;//works fine

UITabBarItem *tbi = [tb.items objectForIndex:1];*//bombs...*

So still trying to access that button at index 1




On Thu, Feb 11, 2010 at 9:09 AM, Eric E. Dolecki  wrote:

> The class is UIApplication in IB. So it seems I can't do that?
>
>
> On Thu, Feb 11, 2010 at 9:01 AM, Roland King  wrote:
>
>> add UIBarButtonItem outlets to whatever class Files Owner is
>>
>> eg
>>
>>@property( readwrite, retain ) IBOutlet UIBarButtonItem
>> *item1;
>>
>> then you will be able to hook them up in IB.
>>
>> On 11-Feb-2010, at 9:57 PM, Eric E. Dolecki wrote:
>>
>> > Awesome  - thank you!
>> >
>> > Now I am looking at how to access a certain UIBarButtonItem so I can set
>> > it's badge.
>> >
>> > In my app delegate I have a UITabBarController. In IB I can't seem to
>> create
>> > an IBOutlet and wire the button I want up so I can set it's badge
>> string.
>> > When I attempt to wire it up from File's Owner (MainWindow.xib), I only
>> have
>> > the option Outlets -delegate.
>> >
>> > - (void)applicationDidFinishLaunching:(UIApplication *)application {
>> >
>> >*// Add the tab bar controller's current view as a subview of the
>> window
>> > *
>> >
>> >[window addSubview:tabBarController.view];
>> >
>> >
>> > How do I access the button I want from the appDelegate?
>> >
>> >
>> >
>> > On Thu, Feb 11, 2010 at 8:46 AM, Mark Woollard > >wrote:
>> >
>> >> See UITabBarItem's badgeValue property.
>> >>
>> >> Regards
>> >> Mark
>> >>
>> >> On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:
>> >>
>> >>> I know about placing a badge on the homescreen application icon, but
>> is
>> >>> there a way to set this up for a button in a toolbar... or do I just
>> use
>> >> my
>> >>> own UIView to do the same thing and float it over the toolbar?
>> >>>
>> >>> Eric
>> >>> ___
>> >>>
>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>> >>>
>> >>> Please do not post admin requests or moderator comments to the list.
>> >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>> >>>
>> >>> Help/Unsubscribe/Update your Subscription:
>> >>>
>> http://lists.apple.com/mailman/options/cocoa-dev/mark.woollard%40mac.com
>> >>>
>> >>> This email sent to mark.wooll...@mac.com
>> >>
>> >>
>> >
>> >
>> > --
>> > http://ericd.net
>> > Interactive design and development
>> > ___
>> >
>> > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>> >
>> > Please do not post admin requests or moderator comments to the list.
>> > Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>> >
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>> >
>> > This email sent to r...@rols.org
>>
>>
>
>
> --
> http://ericd.net
> Interactive design and development
>



-- 
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Interactive design and development
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Re: iPhone: badge icon for a button in toolbar

It's objectAtIndex not objectForIndex ;) Sorry - it's working now.

On Thu, Feb 11, 2010 at 9:21 AM, Eric E. Dolecki  wrote:

> Ok - I hooked it up to the appdelegate... from another class I am doing
> this (which bombs):
>
> MyAppDelegate *ad = (MyAppDelegate *)[[UIApplication sharedApplication]
> delegate];
>
> UITabBar *tb = ad.tabBar;//works fine
>
> UITabBarItem *tbi = [tb.items objectForIndex:1];*//bombs...*
>
> So still trying to access that button at index 1
>
>
>
>
> On Thu, Feb 11, 2010 at 9:09 AM, Eric E. Dolecki wrote:
>
>> The class is UIApplication in IB. So it seems I can't do that?
>>
>>
>> On Thu, Feb 11, 2010 at 9:01 AM, Roland King  wrote:
>>
>>> add UIBarButtonItem outlets to whatever class Files Owner is
>>>
>>> eg
>>>
>>>@property( readwrite, retain ) IBOutlet UIBarButtonItem
>>> *item1;
>>>
>>> then you will be able to hook them up in IB.
>>>
>>> On 11-Feb-2010, at 9:57 PM, Eric E. Dolecki wrote:
>>>
>>> > Awesome  - thank you!
>>> >
>>> > Now I am looking at how to access a certain UIBarButtonItem so I can
>>> set
>>> > it's badge.
>>> >
>>> > In my app delegate I have a UITabBarController. In IB I can't seem to
>>> create
>>> > an IBOutlet and wire the button I want up so I can set it's badge
>>> string.
>>> > When I attempt to wire it up from File's Owner (MainWindow.xib), I only
>>> have
>>> > the option Outlets -delegate.
>>> >
>>> > - (void)applicationDidFinishLaunching:(UIApplication *)application {
>>> >
>>> >*// Add the tab bar controller's current view as a subview of the
>>> window
>>> > *
>>> >
>>> >[window addSubview:tabBarController.view];
>>> >
>>> >
>>> > How do I access the button I want from the appDelegate?
>>> >
>>> >
>>> >
>>> > On Thu, Feb 11, 2010 at 8:46 AM, Mark Woollard >> >wrote:
>>> >
>>> >> See UITabBarItem's badgeValue property.
>>> >>
>>> >> Regards
>>> >> Mark
>>> >>
>>> >> On 11 Feb 2010, at 13:40, Eric E. Dolecki wrote:
>>> >>
>>> >>> I know about placing a badge on the homescreen application icon, but
>>> is
>>> >>> there a way to set this up for a button in a toolbar... or do I just
>>> use
>>> >> my
>>> >>> own UIView to do the same thing and float it over the toolbar?
>>> >>>
>>> >>> Eric
>>> >>> ___
>>> >>>
>>> >>> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>>> >>>
>>> >>> Please do not post admin requests or moderator comments to the list.
>>> >>> Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>> >>>
>>> >>> Help/Unsubscribe/Update your Subscription:
>>> >>>
>>> http://lists.apple.com/mailman/options/cocoa-dev/mark.woollard%40mac.com
>>> >>>
>>> >>> This email sent to mark.wooll...@mac.com
>>> >>
>>> >>
>>> >
>>> >
>>> > --
>>> > http://ericd.net
>>> > Interactive design and development
>>> > ___
>>> >
>>> > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
>>> >
>>> > Please do not post admin requests or moderator comments to the list.
>>> > Contact the moderators at cocoa-dev-admins(at)lists.apple.com
>>> >
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>>> >
>>> > This email sent to r...@rols.org
>>>
>>>
>>
>>
>> --
>> http://ericd.net
>> Interactive design and development
>>
>
>
>
> --
> http://ericd.net
> Interactive design and development
>



-- 
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Interactive design and development
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Re: NSAttributtedString initWithHTML skip styles

2010-02-11 Thread Jens Alfke


On Feb 11, 2010, at 2:45 AM, Gustavo Pizano wrote:

> [(XWSDefaultComponentView *)[component view] setString:[valueString string]];

The -setString: method takes a plain NSString. So you stripped out your 
formatting when calling it.
To put an NSAttributedString into an NSTextView, you replace the contents of 
its textStorage object (which is a special type of mutable attributed string):
[[textView textStorage] setAttributedString: valueString];

—Jens___

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Copying CLHeading objects does not appear to work . . .

2010-02-11 Thread Michael A. Crawford

Here is the code (pertinent snippets)

@interface BlueSLRGPS ()
@property (copy) CLHeading* currentHeading;
@property (copy) CLLocation* currentLocation;
@property (retain) CLLocation* previousLocation;

- (NSString*)compassPointForHeading:(double)heading;

- (void)locationManager:(CLLocationManager*)manager
   didUpdateHeading:(CLHeading*)newHeading;

- (void)locationManager:(CLLocationManager*)manager
didUpdateToLocation:(CLLocation*)newLocation
   fromLocation:(CLLocation*)oldLocation;

- (void)locationManager:(CLLocationManager*)manager
   didFailWithError:(NSError*)error;
@end

@synthesize currentHeading;

- (void)locationManager:(CLLocationManager*)manager
   didUpdateHeading:(CLHeading*)newHeading
{
MCLog(@"heading update isMainThread = %d", [NSThread isMainThread]);
MCLog(@"Heading: %f", newHeading.magneticHeading);
self.currentHeading = newHeading;
[self.delegate headingUpdated];
}

Here is the result.

(gdb) p newHeading
$1 = (CLHeading *) 0x481ef50
(gdb) p currentHeading
$2 = (CLHeading *) 0x3c193c0
(gdb) po (CLHeading*)0x481ef50
magneticHeading 211.00 trueHeading 205.17 accuracy 35.00 x 2.625 y -6.875 z 
-18.250 @ 2010-02-11 11:18:29 AM
(gdb) po (CLHeading*)0x3c193c0
magneticHeading 0.00 trueHeading 0.00 accuracy 0.00 x 0.000 y 0.000 z 0.000 @ 
(null)

I didn't see anything in the docs about CLHeading objects not being copyable.  
Any ideas as to why the copy did not duplicate the current values?

-Michael

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iPhone and OS X apps question

I am looking at prototyping something and would like an iPhone app to be
able to talk with a desktop OS X app. Do something on the iPhone app, it's
reflected in the OS X application. And vice-versa. Where might I start for a
project like this?

Eric
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Re: iPhone and OS X apps question

2010-02-11 Thread Mark Ritchie


Hey Eric!
Over what timeframe did you want the iPhone app and the desktop app to  
be in sync?  Immediately?   ASAP? When iPhone is tether sync'd?  
Something else?
Is this one iPhone app to one desktop, all with the same user? Or is  
this many to many with many users? Something inbetween?
What behaviour do you envision when one or the other app is working  
'offline' , say on an airplane or in the metro?
And, of course, the fun question...  Who wins when there's a  
conflicting update? ;-)

Food for thought!
M.

Sent from my iPhone

On 2010-02-11, at 8:29, "Eric E. Dolecki"  wrote:

I am looking at prototyping something and would like an iPhone app  
to be
able to talk with a desktop OS X app. Do something on the iPhone  
app, it's
reflected in the OS X application. And vice-versa. Where might I  
start for a

project like this?

Eric
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Re: iPhone and OS X apps question

2010-02-11 Thread Ricky Sharp

I would begin with Apple's picture-sharing sample code. I think that  
sample has two parts - server and client. Ther is also an iPhone  
sample dealing with locating Bonjour services.


Basically Bonjour is used to have the server (Mac app) and client  
(iPhone) discover each other. Then use whatever networking protocol  
you want to send data.


This setup works extremely well in the simulator. When working with  
real hardware you will need to connect it (and your Mac) to the same  
wifi network. There is currently no public APIs to talk to a docked  
iPhone OS device.


Sent from my iPhone

On Feb 11, 2010, at 10:29 AM, "Eric E. Dolecki"   
wrote:


I am looking at prototyping something and would like an iPhone app  
to be
able to talk with a desktop OS X app. Do something on the iPhone  
app, it's
reflected in the OS X application. And vice-versa. Where might I  
start for a

project like this?

Eric
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Re: Copying CLHeading objects does not appear to work . . .

2010-02-11 Thread Michael A. Crawford

It the copy failing because these are read-only properties?

-Michael

On Feb 11, 2010, at 11:29 AM, Michael A. Crawford wrote:

> Here is the code (pertinent snippets)
> 
> @interface BlueSLRGPS ()
> @property (copy) CLHeading* currentHeading;
> @property (copy) CLLocation* currentLocation;
> @property (retain) CLLocation* previousLocation;
> 
> - (NSString*)compassPointForHeading:(double)heading;
> 
> - (void)locationManager:(CLLocationManager*)manager
>   didUpdateHeading:(CLHeading*)newHeading;
> 
> - (void)locationManager:(CLLocationManager*)manager
>   didUpdateToLocation:(CLLocation*)newLocation
>  fromLocation:(CLLocation*)oldLocation;
> 
> - (void)locationManager:(CLLocationManager*)manager
>  didFailWithError:(NSError*)error;
> @end
> 
> @synthesize currentHeading;
> 
> - (void)locationManager:(CLLocationManager*)manager
>   didUpdateHeading:(CLHeading*)newHeading
> {
>MCLog(@"heading update isMainThread = %d", [NSThread isMainThread]);
>MCLog(@"Heading: %f", newHeading.magneticHeading);
>self.currentHeading = newHeading;
>[self.delegate headingUpdated];
> }
> 
> Here is the result.
> 
> (gdb) p newHeading
> $1 = (CLHeading *) 0x481ef50
> (gdb) p currentHeading
> $2 = (CLHeading *) 0x3c193c0
> (gdb) po (CLHeading*)0x481ef50
> magneticHeading 211.00 trueHeading 205.17 accuracy 35.00 x 2.625 y -6.875 z 
> -18.250 @ 2010-02-11 11:18:29 AM
> (gdb) po (CLHeading*)0x3c193c0
> magneticHeading 0.00 trueHeading 0.00 accuracy 0.00 x 0.000 y 0.000 z 0.000 @ 
> (null)
> 
> I didn't see anything in the docs about CLHeading objects not being copyable. 
>  Any ideas as to why the copy did not duplicate the current values?
> 
> -Michael
> 
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Re: What classes have -init?

2010-02-11 Thread Gordon Apple

It's unfortunate that all initializers don't at least call "init"
internally.  That would make subclassing easier if all one needs is to set a
few ivars.  In the earlier days of MacApp (Pascal and first C++ versions)
there was a basic initializer, similar to "init", called by all classes,
just for that purpose.  Of course, Objective C at least sets them all to
zero, reducing the need -- but it still would have been useful, sometimes
eliminating the need to override multiple initializers.

Of course, you can always override "init" first, just to test whether it
gets called.  But then, there's no guarantee in future versions.

> 
> True.
> 
> But most classes have designated initializers that configure the class
> properly. They should be documented, although typically they‚re used for
> subclassing the class.
> 
> 
> On Feb 10, 2010, at 3:49 PM, Henry McGilton (Boulevardier) wrote:
> 
>> 
>> On Feb 10, 2010, at 12:23 PM, James Walker wrote:
>> 
>>> I think at times I've written things like [[NSMutableArray alloc] init] with
>>> no apparent ill effects, but now I notice that the docs for NSMutableArray
>>> and NSArray don't say that there is an init method.  The NSObject docs say
>>> that an init method might raise an exception.  Is there some other init rule
>>> that I've missed, or have I just gotten lucky?
>> 
>> When in doubt, remember to look at the super-class documentation:
>> 
>> http://developer.apple.com/mac/library/documentation/cocoa/reference/Foundati
>> on/Classes/NSObject_Class/Reference/Reference.html#//apple_ref/doc/uid/20
>> 50-init
>> 
>> All classes that inherit from NSObject (which means pretty much
>> all of them) inherit NSObject's   ˆinit   method, and that's assumed
>> or implicit in the Array examples you referenced above . . .
>> 
> 
> 

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Re: iPhone and OS X apps question

To clarify what I'm looking to do...

I have a wifi router attached to the back of my Mac. My Touch connects to
that router.

I'd like to run an app on the Touch and an app on the Mac. I'd like to be
able to send a simple string from either app to the other and acknowledge
receipt of that.

Swipe on the Touch, the Mac app's UI displays "got the swipe" - and press a
button or something on the Mac and it tells the Touch app "got the button"

Once I get communication going, I plan on making the behaviors more
interesting. ASAP as far as timing goes. It's not for a real world product,
just prototyping for an idea.

I have no experience with Bonjour or sockets on this platform... could I
open sockets in each app and then have them talk that way? If yes, is there
sample code someplace that basically does this?

The Touch app could talk to a Flash app running on the Mac too - doesn't
need to be a OS X application.

Eric

On Thu, Feb 11, 2010 at 11:47 AM, Ricky Sharp  wrote:

> I would begin with Apple's picture-sharing sample code. I think that sample
> has two parts - server and client. Ther is also an iPhone sample dealing
> with locating Bonjour services.
>
> Basically Bonjour is used to have the server (Mac app) and client (iPhone)
> discover each other. Then use whatever networking protocol you want to send
> data.
>
> This setup works extremely well in the simulator. When working with real
> hardware you will need to connect it (and your Mac) to the same wifi
> network. There is currently no public APIs to talk to a docked iPhone OS
> device.
>
> Sent from my iPhone
>
>
> On Feb 11, 2010, at 10:29 AM, "Eric E. Dolecki" 
> wrote:
>
>  I am looking at prototyping something and would like an iPhone app to be
>> able to talk with a desktop OS X app. Do something on the iPhone app, it's
>> reflected in the OS X application. And vice-versa. Where might I start for
>> a
>> project like this?
>>
>> Eric
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>

-- 
http://ericd.net
Interactive design and development
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Re: iPhone and OS X apps question

2010-02-11 Thread Jens Alfke

On Feb 11, 2010, at 8:47 AM, Ricky Sharp wrote:

> Basically Bonjour is used to have the server (Mac app) and client (iPhone) 
> discover each other. Then use whatever networking protocol you want to send 
> data.

I wrote an open-source Mac/iPhone networking framework that makes this job 
easier (both the Bonjour part and the protocol part):
http://bitbucket.org/snej/mynetwork/
The API lets you send messages, which are similar to NSDictionaries, and get 
replies to them. It's asynchronous, and multiple messages and replies can be in 
flight in both directions.

—Jens___

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Re: Find in a WebKit view?

2010-02-11 Thread Mike Abdullah

WebDocumentSearching is your man.

On 11 Feb 2010, at 04:12, Peter N Lewis wrote:

> Is there any way to add support for the normal Cocoa Find functionality in a 
> WebKit view?
> 
> Failing that, is there any other way to get search functionality in a WebKit 
> view?  I want to do some in-app documentation, and Apple's Help system is so 
> bad I've finally given up on that (floating window!?!), but without being 
> able to search the web page, it is a bit limited.
> 
> Ideally 10.5+, but I'd accept a 10.6+ solution.
> 
> Thanks,
>   Peter.
> 
> -- 
> Keyboard Maestro 4.0.2 now released!  Brand new interface!
> 
> Keyboard Maestro  Macros for your Mac
>    
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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Re: Core Data Issue with Binding

2010-02-11 Thread Mike Abdullah


On 10 Feb 2010, at 20:03, Kyle Sluder wrote:

> On Wed, Feb 10, 2010 at 9:26 AM, Matthew Miller  wrote:
>> @property (nonatomic, retain) NSDate *DateOfBirth;
>> @property (nonatomic, retain) NSString *FirstName;
>> @property (nonatomic, retain) NSString *LastName;
>> @property (nonatomic, retain) NSNumber *DraftClass;
>> @property (nonatomic, retain) NSNumber *DraftPick;
>> @property (nonatomic, assign) BOOL Retired;
>> @property (nonatomic, retain) NSSet *PlaysFor;
>> @property (nonatomic, retain) Program *School;
>> 
>> @property (readonly) NSString *DisplayName;
> 
> These are not KVC-compliant property names. You must rename these with
> lowercase initial letters, like "dateOfBirth", "firstName", etc.

Not true, they are KVC-compliant. However, they *are* unwise and you should 
follow Kyle's advice.___

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Re: What classes have -init?

2010-02-11 Thread James Walker

On 2/10/2010 8:38 PM, Quincey Morris wrote:

On Feb 10, 2010, at 12:23 PM, James Walker wrote:

I think at times I've written things like [[NSMutableArray alloc]
init] with no apparent ill effects, but now I notice that the docs for
NSMutableArray and NSArray don't say that there is an init method. The
NSObject docs say that an init method might raise an exception. Is there
some other init rule that I've missed, or have I just gotten lucky?

It's worthwhile keeping this in mind:

http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/CocoaObjects.html#//apple_ref/doc/uid/TP40002974-CH4-SW3

Particularly:

"When you define a subclass you must be able to identify the
designated initializer of the superclass and invoke it in your
subclass’s designated initializer through a message to super. You
must also make sure that inherited initializers are covered in some
way."

Applying that [conceptually] to NSArray, say, there's no actual luck
involved. If 'init' is a designated initializer, it should be
documented in the class reference and there's no problem. If not,
then NSArray *must* ensure that calling it results in one of its real
designated initializers being called, *or* must produce an
error.

If it produces an error that I'm not expecting, that would be bad. What
I was wondering was how I knew whether it would produce an error, other
than by just testing on every version of the OS that I care about.

In a previous reply, Henry McGilton pointed out that the NSObject
documentation states that its implementation of init does not produce an
error. Therefore, any subclass that doesn't override init does not
produce an error.

--
James W. Walker, Innoventive Software LLC

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setWidth pop-up list of NSComboBox

2010-02-11 Thread John Yeh

How to change the width of the pop-up list in NSComboBox? When a long string is 
added to the NSComboBox, it can't displayed completely. how to extend the width 
of the pop-up list?
-John___

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Re: What classes have -init?

2010-02-11 Thread Scott Ribe

> ...but it still would have been useful, sometimes
> eliminating the need to override multiple initializers.

Are you missing the point of the designated initializer? Or have you dealt
with classes that did not have one, or did not use it properly?

-- 
Scott Ribe
scott_r...@killerbytes.com
http://www.killerbytes.com/
(303) 722-0567 voice


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No Methods being called in my subclassed NSArrayController

2010-02-11 Thread Tony Romano

Environment:

1. Core Data, Document based app.
2. UI contains a NSTableView, Add, Remove, ...  
3. NSArrayController.

The App works fine, I can Add/Remove objects, Save/Load Works, Undo Works. 

Problem:

I am trying to override the -(id)newObject  method to change one of the UI 
elements in the Window as part of the 'Add' operation.  So, I created a new 
class derived from NSArrayController, implemented the newObject method and it 
never gets called.  In fact, I've stubbed several other methods of 
NSArrayController and NONE of them get called.

What am I missing? 

Thanks in advance!

-tony


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Re: No Methods being called in my subclassed NSArrayController

2010-02-11 Thread Fritz Anderson

On 11 Feb 2010, at 1:20 PM, Tony Romano wrote:

> Environment:
> 
> 1. Core Data, Document based app.
> 2. UI contains a NSTableView, Add, Remove, ...  
> 3. NSArrayController.
> 
> The App works fine, I can Add/Remove objects, Save/Load Works, Undo Works. 
> 
> Problem:
> 
> I am trying to override the -(id)newObject  method to change one of the UI 
> elements in the Window as part of the 'Add' operation.  So, I created a new 
> class derived from NSArrayController, implemented the newObject method and it 
> never gets called.  In fact, I've stubbed several other methods of 
> NSArrayController and NONE of them get called.
> 
> What am I missing? 

The first thing I'd look for is whether you're using your subclass when you 
instantiate the array controller. I assume you do this in the NIB. When you 
select the array controller and look at the Identity inspector, what class does 
it show?

— F

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iPhone: UIWebView not displaying until scrolled?

I am animating a UIWebView after it's loaded - but it doesn't display
anything unless I scroll it a little bit. If I call [webView reload]; my
webViewDidFinishLoad gets called - and that is where I put my [webView
reload] call to fix the display. What is the workaround aside from placing
the UIWebView in the main screen a few pixels?

-- 
http://ericd.net
Interactive design and development
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Re: What classes have -init?

2010-02-11 Thread Greg Parker

On Feb 11, 2010, at 9:03 AM, Gordon Apple wrote:
> It's unfortunate that all initializers don't at least call "init"
> internally.  That would make subclassing easier if all one needs is to set a
> few ivars.  In the earlier days of MacApp (Pascal and first C++ versions)
> there was a basic initializer, similar to "init", called by all classes,
> just for that purpose.  Of course, Objective C at least sets them all to
> zero, reducing the need -- but it still would have been useful, sometimes
> eliminating the need to override multiple initializers.

The designated initializer pattern solves the problem in a similar way. Every 
initializer in a class is expected to call through that class's designated 
initializer eventually. When you subclass a class, you can override just the 
designated initializer to do your work and then call super's designated 
initializer. All of the superclass's other initializers will funnel through 
your code without any additional overrides.

-- 
Greg Parker gpar...@apple.com Runtime Wrangler

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Re: What classes have -init?

2010-02-11 Thread Gordon Apple

My point was that if you could count on "init" being called internally and
all you needed was to initialize some ivars, you could override "init" and
not have to override the (sometimes more involved) designated initializer
and possibly other initializers.  You could still use the (superclass)
designated initializer or a class-level instantiator without overriding it.

This relates to a long ago discussion about the fact that class-level
instantiators, e.g., [someClass  someClassWithMoreStuff], should (and I
think do) always use the class designation "self" so that they always
instantiated the subclass object and not the superclass object.

On 2/11/10 12:59 PM, "Scott Ribe"  wrote:

>> ...but it still would have been useful, sometimes
>> eliminating the need to override multiple initializers.
> 
> Are you missing the point of the designated initializer? Or have you dealt
> with classes that did not have one, or did not use it properly?

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Re: What classes have -init?

2010-02-11 Thread mmalc Crawford


On Feb 11, 2010, at 12:08 pm, Gordon Apple wrote:

> My point was that if you could count on "init" being called internally and
> all you needed was to initialize some ivars, you could override "init" and
> not have to override the (sometimes more involved) designated initializer
> and possibly other initializers.  You could still use the (superclass)
> designated initializer or a class-level instantiator without overriding it.
> 
Please read "The Designated Initializer" in 
,
 in particular the section starting "Figure 3-3  Covering the Designated 
Initializer".

mmalc

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Re: iPhone: UIWebView not displaying until scrolled?

2010-02-11 Thread Peter Blazejewicz

Hi Eric,

can you post how your web view is animated?
If I setup quick test case:

@implementation WebViewController
@synthesize webView;


- (void)viewDidLoad
{
[super viewDidLoad];
self.webView.delegate = self;
NSString *path = [[NSBundle mainBundle] pathForResource:@"index"
ofType:@"html"];
NSURL *url = [[NSURL alloc] initFileURLWithPath:path];
[self.webView loadRequest:[NSURLRequest requestWithURL:url]];
self.webView.alpha = 0.0;
[url release]; url = nil;
}
- (void)viewDidUnload
{
self.webView = nil;
}

- (void)dealloc
{
[webView release]; webView = nil;
[super dealloc];
}

-(void)webViewDidFinishLoad:(UIWebView *)webView
{
NSString *loadHandlerStr = @"window.pageLoaded()";
[self.webView stringByEvaluatingJavaScriptFromString:loadHandlerStr];
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5];
self.webView.alpha = 1.0;
[UIView commitAnimations];
}
@end

both UIWebView is animated (and visible) and also content within html
web page is drawn (and animated):
(JavaScript/CSS)
from opacity 0.0:
 -webkit-transition: opacity 2s linear;

to 1.0:
elem.style.opacity = 1.0;

maybe that is some different issue that somehow became apparent on
your web view use,

regards,
Peter Blazejewicz
On Thu, Feb 11, 2010 at 8:40 PM, Eric E. Dolecki  wrote:
> I am animating a UIWebView after it's loaded - but it doesn't display
> anything unless I scroll it a little bit. If I call [webView reload]; my
> webViewDidFinishLoad gets called - and that is where I put my [webView
> reload] call to fix the display. What is the workaround aside from placing
> the UIWebView in the main screen a few pixels?
>
> --
> http://ericd.net
> Interactive design and development
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Re: No Methods being called in my subclassed NSArrayController

2010-02-11 Thread Tony Romano

Thanks for the reply Fritz.

It shows NSArrayController and it is greyed out.  It list two options in the 
drop down,  NSArrayController and NSDictionaryController.  If I try to add my 
controller class's name, IB beeps and won't accept the name.  (I forgot to 
mention in my original post that the "Prepares Content" is checked on the 
attributes page).

I'm sure it is something silly I am doing.

-tony
On Feb 11, 2010, at 11:27 AM, Fritz Anderson wrote:

> On 11 Feb 2010, at 1:20 PM, Tony Romano wrote:
> 
>> Environment:
>> 
>> 1. Core Data, Document based app.
>> 2. UI contains a NSTableView, Add, Remove, ...  
>> 3. NSArrayController.
>> 
>> The App works fine, I can Add/Remove objects, Save/Load Works, Undo Works. 
>> 
>> Problem:
>> 
>> I am trying to override the -(id)newObject  method to change one of the UI 
>> elements in the Window as part of the 'Add' operation.  So, I created a new 
>> class derived from NSArrayController, implemented the newObject method and 
>> it never gets called.  In fact, I've stubbed several other methods of 
>> NSArrayController and NONE of them get called.
>> 
>> What am I missing? 
> 
> The first thing I'd look for is whether you're using your subclass when you 
> instantiate the array controller. I assume you do this in the NIB. When you 
> select the array controller and look at the Identity inspector, what class 
> does it show?
> 
>   — F
> 
> 

-tony


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Re: iPhone: UIWebView not displaying until scrolled?

I fixed it - the problem lies when the UIWebView is loaded, but it's not on
screen - it's center is off screen. When I animate it into view on the
Touch, it's blank until I scroll it a little. Now, before I call my
animation, I have the webView reload, then its' animated into view and it
works.

Eric

On Thu, Feb 11, 2010 at 3:36 PM, Peter Blazejewicz <
peter.blazejew...@gmail.com> wrote:

> Hi Eric,
>
> can you post how your web view is animated?
> If I setup quick test case:
>
> @implementation WebViewController
> @synthesize webView;
>
>
> - (void)viewDidLoad
> {
>[super viewDidLoad];
>self.webView.delegate = self;
>NSString *path = [[NSBundle mainBundle] pathForResource:@"index"
> ofType:@"html"];
>NSURL *url = [[NSURL alloc] initFileURLWithPath:path];
>[self.webView loadRequest:[NSURLRequest requestWithURL:url]];
>self.webView.alpha = 0.0;
>[url release]; url = nil;
> }
> - (void)viewDidUnload
> {
>self.webView = nil;
> }
>
> - (void)dealloc
> {
>[webView release]; webView = nil;
>[super dealloc];
> }
>
> -(void)webViewDidFinishLoad:(UIWebView *)webView
> {
>NSString *loadHandlerStr = @"window.pageLoaded()";
>[self.webView stringByEvaluatingJavaScriptFromString:loadHandlerStr];
>[UIView beginAnimations:nil context:nil];
>[UIView setAnimationDuration:0.5];
>self.webView.alpha = 1.0;
>[UIView commitAnimations];
> }
> @end
>
> both UIWebView is animated (and visible) and also content within html
> web page is drawn (and animated):
> (JavaScript/CSS)
> from opacity 0.0:
>  -webkit-transition: opacity 2s linear;
>
> to 1.0:
> elem.style.opacity = 1.0;
>
> maybe that is some different issue that somehow became apparent on
> your web view use,
>
> regards,
> Peter Blazejewicz
> On Thu, Feb 11, 2010 at 8:40 PM, Eric E. Dolecki 
> wrote:
> > I am animating a UIWebView after it's loaded - but it doesn't display
> > anything unless I scroll it a little bit. If I call [webView reload]; my
> > webViewDidFinishLoad gets called - and that is where I put my [webView
> > reload] call to fix the display. What is the workaround aside from
> placing
> > the UIWebView in the main screen a few pixels?
> >
> > --
> > http://ericd.net
> > Interactive design and development
>



-- 
http://ericd.net
Interactive design and development
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Re: Core Data Issue with Binding

2010-02-11 Thread Kyle Sluder

On Thu, Feb 11, 2010 at 9:55 AM, Mike Abdullah
 wrote:
> Not true, they are KVC-compliant. However, they *are* unwise and you should 
> follow Kyle's advice.

I can't find anywhere that specifically addresses the capitalization
issue. The only thing I've found that comes close is the note on
typographical conventions at the top of "Key-Vaule Coding Accessor
Methods" in the Key-Value Coding Programming Guide[1], which uses
 and  to distinguish between lowercase and capitalized
forms. But that of course doesn't explicitly form part of the API
contract.

--Kyle Sluder

[1] 
http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/KeyValueCoding/Concepts/AccessorConventions.html#//apple_ref/doc/uid/20002174
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Re: Core Data: Insert, Fetch, Re-Fetch. Same Object?

2010-02-11 Thread Jerry Krinock

Thanks for your input, atze.  I believe you.  But to confirm it, we need the 
documentation.

On 2010 Feb 11, at 00:19, Alexander Spohr wrote:

> Every NSManagedObjectContext holds its own but unique copy of your object.

I understand that each managed object context makes separate copies, but I 
wouldn't say that it necessarily follows from this that any given managed 
object context could not create more than one.

> This is because the object in the sql-store needs a primary key I would 
> have thought that your inserted object gets the persistent key set and will 
> therefore be the same object as the fetched ones. But I did not check your 
> code for a misconfiguration.

Well, it works as I said.

> No, you will always get the same object. Because this was why CoreData and 
> EOF where made for. Exactly this.

That's what I'm looking for.  If anyone can find "always get the same object" 
in the API documentation, please do so.

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Re: Core Data: Insert, Fetch, Re-Fetch. Same Object?

2010-02-11 Thread mmalc Crawford

On Feb 10, 2010, at 7:07 pm, Jerry Krinock wrote:

>> Yes, basically. There is only going to be one in-memory object at a time 
>> that represents the same managed object.
> 
> It certainly seems to be sensible, but I just wish someone could find such 
> documentation.  I can't.
> 
Uniquing: 

From "Core Data Basics"

You may have more than one managed object context in your application. For 
every object in a persistent store there may be at most one corresponding 
managed object associated with a given context (for more details, see “Faulting 
and Uniquing”).

mmalc

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[iPhone] custom CALayer drawing

I'm trying to do some custom drawing in a CALayer subclass by overriding the 
drawInContext: method, but it appears that its not being called. In my subclass 
I just have this:

- (void)drawInContext:(CGContextRef)theContext
{
NSLog(@"drawInContext called");
}

Then in the viewDidLoad method of my view controller I have this:

CustomLayer *lines = [CustomLayer layer];
[self.view.layer addSublayer:lines];

However, the drawInContext method is never called. What am I doing wrong 
here?___

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Re: Core Data Issue with Binding

2010-02-11 Thread Mike Abdullah


On 11 Feb 2010, at 21:50, Kyle Sluder wrote:

> On Thu, Feb 11, 2010 at 9:55 AM, Mike Abdullah
>  wrote:
>> Not true, they are KVC-compliant. However, they *are* unwise and you should 
>> follow Kyle's advice.
> 
> I can't find anywhere that specifically addresses the capitalization
> issue. The only thing I've found that comes close is the note on
> typographical conventions at the top of "Key-Vaule Coding Accessor
> Methods" in the Key-Value Coding Programming Guide[1], which uses
>  and  to distinguish between lowercase and capitalized
> forms. But that of course doesn't explicitly form part of the API
> contract.

Fair enough. The main reason why such a thing is legal is that you sometimes 
need a method like -URL or -HTMLString, so the system supports this.
> 
> 
> [1] 
> http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/KeyValueCoding/Concepts/AccessorConventions.html#//apple_ref/doc/uid/20002174

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Re: Core Data Issue with Binding

2010-02-11 Thread Kyle Sluder

On Thu, Feb 11, 2010 at 3:48 PM, Mike Abdullah
 wrote:
> Fair enough. The main reason why such a thing is legal is that you sometimes 
> need a method like -URL or -HTMLString, so the system supports this.

Makes perfect sense. Filed doc bug rdar://problem/7640544.

--Kyle Sluder
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Re: [iPhone] custom CALayer drawing

2010-02-11 Thread Bob Barnes

  Have you tried calling setNeedsDisplay on the view? You need to request that 
a view redraw when the data or state used for drawing a view changes.

Bob

On Feb 11, 2010, at 3:44 PM, PCWiz wrote:

> I'm trying to do some custom drawing in a CALayer subclass by overriding the 
> drawInContext: method, but it appears that its not being called. In my 
> subclass I just have this:
> 
> - (void)drawInContext:(CGContextRef)theContext
> {
>NSLog(@"drawInContext called");
> }
> 
> Then in the viewDidLoad method of my view controller I have this:
> 
> CustomLayer *lines = [CustomLayer layer];
> [self.view.layer addSublayer:lines];
> 
> However, the drawInContext method is never called. What am I doing wrong 
> here?___
> 
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> 
> Please do not post admin requests or moderator comments to the list.
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Re: No Methods being called in my subclassed NSArrayController

2010-02-11 Thread Jerry Krinock

On 2010 Feb 11, at 13:25, Tony Romano wrote:

> Thanks for the reply Fritz.
> 
> It shows NSArrayController and it is greyed out.  It list two options in the 
> drop down,  NSArrayController and NSDictionaryController.  If I try to add my 
> controller class's name, IB beeps and won't accept the name.  (I forgot to 
> mention in my original post that the "Prepares Content" is checked on the 
> attributes page).

1.  Make sure that your subclass is declared as @interface MyArrayController : 
NSArrayController
2.  Make sure that this is in a .h file which is included in your project.  
(Put some garbage text into it and see if it compiles.)
3.  Save the file.
4.  In Interface Builder, click File > Reload All Class Files.

Now check that "drop down" again.

I have subclassed NSArrayController like this and it works fine.

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Re: [iPhone] custom CALayer drawing

2010-02-11 Thread David Duncan

On Feb 11, 2010, at 3:44 PM, PCWiz wrote:

> I'm trying to do some custom drawing in a CALayer subclass by overriding the 
> drawInContext: method, but it appears that its not being called. In my 
> subclass I just have this:
> 
> However, the drawInContext method is never called. What am I doing wrong here?

Layers (unlike views) start life validated. You need to call the layer's 
-setNeedsDisplay method for your -drawInContext: method to be called, so you 
should add a [lines setNeedsDisplay] call at some point.
--
David Duncan
Apple DTS Animation and Printing

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Re: [iPhone] custom CALayer drawing

Tried it, my code looks like this now:

CustomLayer *lines = [CustomLayer layer];
[self.view.layer addSublayer:lines];
[lines setNeedsDisplay];

Still nothing. Am I calling setNeedsDisplay at the wrong place?

On 2010-02-11, at 5:39 PM, Bob Barnes wrote:

>   Have you tried calling setNeedsDisplay on the view? You need to request 
> that a view redraw when the data or state used for drawing a view changes.
> 
> Bob
> 
> On Feb 11, 2010, at 3:44 PM, PCWiz wrote:
> 
>> I'm trying to do some custom drawing in a CALayer subclass by overriding the 
>> drawInContext: method, but it appears that its not being called. In my 
>> subclass I just have this:
>> 
>> - (void)drawInContext:(CGContextRef)theContext
>> {
>>NSLog(@"drawInContext called");
>> }
>> 
>> Then in the viewDidLoad method of my view controller I have this:
>> 
>> CustomLayer *lines = [CustomLayer layer];
>> [self.view.layer addSublayer:lines];
>> 
>> However, the drawInContext method is never called. What am I doing wrong 
>> here?___
>> 
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>> 
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> 

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Re: [iPhone] custom CALayer drawing

Yep, I just tried that (sent a reply a minute ago) but the drawInContext: 
method still isn't being called.


Independent Cocoa Developer, Macatomy Software
http://macatomy.com


On 2010-02-11, at 5:47 PM, David Duncan wrote:

> On Feb 11, 2010, at 3:44 PM, PCWiz wrote:
> 
>> I'm trying to do some custom drawing in a CALayer subclass by overriding the 
>> drawInContext: method, but it appears that its not being called. In my 
>> subclass I just have this:
>> 
>> However, the drawInContext method is never called. What am I doing wrong 
>> here?
> 
> Layers (unlike views) start life validated. You need to call the layer's 
> -setNeedsDisplay method for your -drawInContext: method to be called, so you 
> should add a [lines setNeedsDisplay] call at some point.
> --
> David Duncan
> Apple DTS Animation and Printing
> 

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Re: No Methods being called in my subclassed NSArrayController

2010-02-11 Thread Tony Romano

The Reload All Class files did it!. Thanks!

On Feb 11, 2010, at 4:46 PM, Jerry Krinock wrote:

> 
> On 2010 Feb 11, at 13:25, Tony Romano wrote:
> 
>> Thanks for the reply Fritz.
>> 
>> It shows NSArrayController and it is greyed out.  It list two options in the 
>> drop down,  NSArrayController and NSDictionaryController.  If I try to add 
>> my controller class's name, IB beeps and won't accept the name.  (I forgot 
>> to mention in my original post that the "Prepares Content" is checked on the 
>> attributes page).
> 
> 1.  Make sure that your subclass is declared as @interface MyArrayController 
> : NSArrayController
> 2.  Make sure that this is in a .h file which is included in your project.  
> (Put some garbage text into it and see if it compiles.)
> 3.  Save the file.
> 4.  In Interface Builder, click File > Reload All Class Files.
> 
> Now check that "drop down" again.
> 
> I have subclassed NSArrayController like this and it works fine.
> 
> ___
> 
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> 
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> 
> This email sent to tony...@hotmail.com
> 

-tony


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[iPhone] CALayer/UIView ordering

In my UIViewController I create a CAGradientLayer in the viewDidLoad method:

CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = CGRectMake(self.view.bounds.origin.x, 
self.view.bounds.origin.y + 44.0, self.view.bounds.size.width, 
self.view.bounds.size.height - 44.0);
gradient.colors = [NSArray arrayWithObjects:(id)[[UIColor 
colorWithRed:0.953 green:0.961 blue:0.965 alpha:1.00] CGColor], (id)[[UIColor 
colorWithRed:0.729 green:0.749 blue:0.792 alpha:1.00] CGColor], nil];
[self.view.layer addSublayer:gradient];

The gradient works fine. Now this view has a subview (custom UIView subclass, 
added in Interface Builder) that draws a line. The problem is that the 
CAGradientLayer goes OVER the subview of the main view. If I comment out the 
code that creates the CAGradientLayer, I can see the contents of the subview 
just fine. Is there any way to make this CAGradientLayer go UNDER the subview?

Independent Cocoa Developer, Macatomy Software
http://macatomy.com


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Re: [iPhone] custom CALayer drawing

2010-02-11 Thread David Duncan

On Feb 11, 2010, at 4:50 PM, PCWiz wrote:

> Yep, I just tried that (sent a reply a minute ago) but the drawInContext: 
> method still isn't being called.


Its because your layer is still sized 0,0. Not much you can draw into a layer 
that size :).
--
David Duncan
Apple DTS Animation and Printing

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Re: [iPhone] custom CALayer drawing

Thanks, setting the layer frame to an appropriate size did the trick :)


Independent Cocoa Developer, Macatomy Software
http://macatomy.com


On 2010-02-11, at 5:55 PM, David Duncan wrote:

> On Feb 11, 2010, at 4:50 PM, PCWiz wrote:
> 
>> Yep, I just tried that (sent a reply a minute ago) but the drawInContext: 
>> method still isn't being called.
> 
> 
> Its because your layer is still sized 0,0. Not much you can draw into a layer 
> that size :).
> --
> David Duncan
> Apple DTS Animation and Printing
> 

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Re: [iPhone] CALayer/UIView ordering

2010-02-11 Thread David Duncan

On Feb 11, 2010, at 4:54 PM, PCWiz wrote:

> The gradient works fine. Now this view has a subview (custom UIView subclass, 
> added in Interface Builder) that draws a line. The problem is that the 
> CAGradientLayer goes OVER the subview of the main view. If I comment out the 
> code that creates the CAGradientLayer, I can see the contents of the subview 
> just fine. Is there any way to make this CAGradientLayer go UNDER the subview?


Views and Layers share the same geometric ordering, that is what a view draws 
over is dependent on the order of its corresponding layer. Your effectively 
adding your gradient layer after all of the other view's that your view 
controller loaded, thus it is drawing over the other views and their 
subviews/layers.

You need to either insert the gradient layer into the sublayers array first, or 
move the views that should be on top to after. You may also want to consider 
creating a UIView subclass that returns [CAGradientLayer class] from its 
+layerClass method and exports methods to configure the gradient layer, then 
you can do your layout in IB (although you would still need to configure it in 
code).
--
David Duncan
Apple DTS Animation and Printing

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Re: What classes have -init?

2010-02-11 Thread Gordon Apple

I have read it.  My point was that if all Cocoa classes called "init"
somewhere in their other initializers (or had a two-step initialization
similar to what MacApp did), then you could simply override (not call)
"init" for simple ivar initialization in a subclass, which would in no way
interfere with a designated initializer.  Since they don't all call it, it's
really academic.

On 2/11/10 6:52 PM, "cocoa-dev-requ...@lists.apple.com"
 wrote:

> Message: 2
> Date: Thu, 11 Feb 2010 12:18:55 -0800
> From: mmalc Crawford 
> Subject: Re: What classes have -init?
> To: Cocoa-Dev List 
> Message-ID: <6ea60c25-38cb-447a-832f-96f17a865...@me.com>
> Content-Type: text/plain; charset=us-ascii
> 
> 
> On Feb 11, 2010, at 12:08 pm, Gordon Apple wrote:
> 
>> My point was that if you could count on "init" being called internally and
>> all you needed was to initialize some ivars, you could override "init" and
>> not have to override the (sometimes more involved) designated initializer
>> and possibly other initializers.  You could still use the (superclass)
>> designated initializer or a class-level instantiator without overriding it.
>> 
> Please read "The Designated Initializer" in
>  veC/Articles/ocAllocInit.html>, in particular the section starting "Figure 3-3
> Covering the Designated Initializer".
> 
> mmalc

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Creating an Application Support folder

2010-02-11 Thread Paul Johnson

I'm trying to find a best way to create the Application Support
folder. I'm rather new at Cocoa so it's taking me a while to do even
this simple thing. I'm also interested in ensuring my application can
be localized easily.

I have a function "- (NSString *)applicationSupportFolder" that
returns the desired folder name, properly localized. I call this
function and then use NSFileManager to check for the existence of the
folder. Because there can be a file (NOT a folder) already bearing the
folder name, I need to handle that possibility. Everything I've found
on the internet just ignores this case.

Can anyone recommend what I should do?
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Best class for pixel-level image processing?

2010-02-11 Thread Alexander Golec

I am writing an application that wants to perform some basic computer vision 
computation, and I want a class that offers pixel-level access to an image. 
What would be the best way to approach this? 

Alex___

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cocoa-dev@lists.apple.com

2010-02-11 Thread Adam Warski

Hello,

I've got a NSMenu with NSMenuItem-s and I would like to support drag&drop from 
the menu - so that the users are able to drag the menu items out. However I'm 
having problems attaching the even listener - can it be done? The NSMenuItem 
only supports an action: message.

-- 
Adam Warski
http://www.warski.org
http://www.softwaremill.eu




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Trying to simulate a NSScrollView within a NSView

2010-02-11 Thread fabien.freling

Hi,

I am trying to emulate a scrolling behavior within a NSView.
I am calling scrollRect:by: and as the documentation specifies:

--
Discussion
This method is useful during scrolling or translation of the coordinate system
to efficiently move as much of the receiver’s rendered image as possible
without requiring it to be redrawn, following these steps:

• Invoke scrollRect:by: to copy the rendered image.
• Move the view object’s origin or scroll it within its superview.
• Calculate the newly exposed rectangles and invoke either
setNeedsDisplay: or setNeedsDisplayInRect: to draw them.
You should rarely need to use this method, however. The scrollPoint:,
scrollRectToVisible:, and autoscroll: methods automatically perform optimized
scrolling.

(cf.
http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSView_Class/Reference/NSView.html
)
--

The scrolling (step 1) looks fine but I don't really get how to set the origin.

My goal is to only redraw the updated areas (top or bottom).
I use Quartz Debug to visualize the updated areas.

I tried using setBounds: but it redraws everything.

A small project can be found here:

http://files.me.com/ffreling/4oa6n8

(I set the NSImageView to an image from my desktop for the example, you can
remove it or set it to another image if you want)

Any help would be appreciate :)
Thank you.

Best regards,

--
Fabien Freling
Software Engineer, Platform team
Nokia, Qt Development Frameworks

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get the list of controls in a NSView

2010-02-11 Thread Jonathan Chacón

Hello everybody,

is there any method to get the list of controls (buttons, labels, splitters, 
etc) of a NSView?


thanks and regards
Jonathan Chacón
Follow me in twitter: 
http://www.twitter.com/jonathanchacon___

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Re: get the list of controls in a NSView

On 12/02/2010, at 3:12 PM, Jonathan Chacón wrote:

> is there any method to get the list of controls (buttons, labels, splitters, 
> etc) of a NSView?

[NSView subViews]

--Graham

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Re: What classes have -init?

2010-02-11 Thread Scott Ribe

> My point was that if all Cocoa classes called "init"
> somewhere in their other initializers (or had a two-step initialization
> similar to what MacApp did), then you could simply override (not call)
> "init" for simple ivar initialization in a subclass, which would in no way
> interfere with a designated initializer.

I get your point now ;-)

-- 
Scott Ribe
scott_r...@killerbytes.com
http://www.killerbytes.com/
(303) 722-0567 voice


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Re: Creating an Application Support folder

2010-02-11 Thread Gideon King

Hi Paul

Firstly, are you using the

NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, 
NSUserDomainMask, YES);

function to find the application support folder?

That would get you the base path, then you can use the 

stringByAppendingPathComponent:

method to add your folder name, then

BOOL isDirectory = NO;
BOOL exists = [[NSFileManager defaultManager] 
fileExistsAtPath:errorReporterPath isDirectory:&isDirectory];

and then check whether it exists, and whether it is a directory.

Then you can use methods like:

BOOL created = [[NSFileManager defaultManager] createDirectoryAtPath:path 
withIntermediateDirectories:YES attributes:nil error:&error];

to create the necessary folders. Hope this helps.


Gideon

On 11/02/2010, at 1:44 PM, Paul Johnson wrote:

> I'm trying to find a best way to create the Application Support
> folder. I'm rather new at Cocoa so it's taking me a while to do even
> this simple thing. I'm also interested in ensuring my application can
> be localized easily.
> 
> I have a function "- (NSString *)applicationSupportFolder" that
> returns the desired folder name, properly localized. I call this
> function and then use NSFileManager to check for the existence of the
> folder. Because there can be a file (NOT a folder) already bearing the
> folder name, I need to handle that possibility. Everything I've found
> on the internet just ignores this case.
> 
> Can anyone recommend what I should do?

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Re: Creating an Application Support folder

On 11/02/2010, at 2:44 PM, Paul Johnson wrote:

> I'm trying to find a best way to create the Application Support
> folder. I'm rather new at Cocoa so it's taking me a while to do even
> this simple thing. I'm also interested in ensuring my application can
> be localized easily.
> 
> I have a function "- (NSString *)applicationSupportFolder" that
> returns the desired folder name, properly localized. I call this
> function and then use NSFileManager to check for the existence of the
> folder. Because there can be a file (NOT a folder) already bearing the
> folder name, I need to handle that possibility. Everything I've found
> on the internet just ignores this case.
> 
> Can anyone recommend what I should do?

It depends. If there is a file bearing that name - unlikely, really - then what 
do you want to do about it? You could delete it, or you could just choose 
another name for your folder. Either way, NSFileManager has methods to do what 
you want. Renaming you can handle yourself - just keep renaming until you get a 
clear outcome that meets your needs (appending digits is a simple way). 
[NSFileManager fileExistsAtPath:isDirectory:] can tell you whether you're 
looking at a file or folder.

For the rename situation, your -applicationSupportFolder method (why not make 
it a class method?) can do all the work internally to make sure that the folder 
is valid, belongs to you, created if necessary and so on, so clients of it can 
just use the method to work with the folder, safe in the knowledge that there's 
no more to do.

Also, presumably you are returning the name of YOUR unique application support 
folder with the ~Library/Application Support directory. That folder can be 
found using NSApplicationSupportDirectory, then you usually will put your own 
folder inside this. If your folder uses your app's bundle identifier, it will 
almost certainly not collide with anyone else's. However, a much earlier 
discussion on that seemed to indicate that most people use the application 
name, which might not be quite so guaranteed to be unique.

--Graham

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Re: What classes have -init?

On 12/02/2010, at 1:43 PM, Gordon Apple wrote:

> My point was that if all Cocoa classes called "init"
> somewhere in their other initializers (or had a two-step initialization
> similar to what MacApp did), then you could simply override (not call)
> "init" for simple ivar initialization in a subclass, which would in no way
> interfere with a designated initializer.

Except that it would be all too easy to create an infinite loop. A subclass 
might implement -init to call super's designated initializer, which later calls 
-init.

I'm not sure what's complex about overriding the designated initializer - even 
if it has a complex set of parameters, (and most do not) then all you do is 
pass them up to super. Your suggestion would only save a tiny, tiny amount of 
work yet lead to potentially big problems.

--Graham

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Re: Creating an Application Support folder

2010-02-11 Thread Fritz Anderson

On 10 Feb 2010, at 9:44 PM, Paul Johnson wrote:

> I have a function "- (NSString *)applicationSupportFolder" that
> returns the desired folder name, properly localized. I call this
> function and then use NSFileManager to check for the existence of the
> folder. Because there can be a file (NOT a folder) already bearing the
> folder name, I need to handle that possibility. Everything I've found
> on the internet just ignores this case.

You're way overthinking this.

1. "Application Support" is a standard directory name in Mac OS X, and it's 
always the same name regardless of localization; as with other standard 
directory names, the Finder localizes the name before displaying it.

2. Look for the function NSSearchPathForDirectoriesInDomains(). Pass the 
constant NSApplicationSupportDirectory. Consider which domains you want to 
cover. Heed the warning that the paths the function returns may not describe 
directories that exist yet.

For a cheap example, create a dummy Core Data, non-document project, and crib 
the Application Support algebra from the application delegate.

— F

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Replacing model objects using an NSArrayController

2010-02-11 Thread William Peters

Hello everyone,

I'm a bit of a newbie here, but hopefully this question won't be too annoying. 
:-)

My application contains several records displayed to the user in an NSTableView 
bound to an NSArrayController. Because these records are complicated 
(containing around thirty fields), I have implemented an Edit option where the 
user can select one of rows in the table, click the Edit button, and have a new 
window appear displaying all of the fields, radio buttons, numeric values, etc. 
for changing.

I have implemented NSCopying on my data objects. When I go to display the edit 
window, I get a reference to the selected object (myController arrangedObjects 
/ selectionIndexes / objectAtIndex), copy the data into a new object for 
editing ([myObject copy]) and then pass that off to the NSWindowController that 
manages the editing process. I do this so that a Cancel from the editor window 
will not affect the original object.

All of that seems to be straightforward enough.

My question is how to get the new, edited object back into the array controller.

I have implemented all of the KVC methods in the Manager class that supplies 
the data to the NSArrayController, and they are being called for Add and 
Delete. I've also coded a replaceObjectInMyArrayAtIndex:withObject: which I 
would like to be called by the array controller when it swaps in the new object 
for the old one. Although my current code does the same thing with separate 
remove and insert calls (see below), that seems to lead to two undoable 
actions, rather than the one I have coded in 
replaceObjectInMyArrayAtIndex:withObject:

fSrcbook = [selArray objectAtIndex: selItem];
fEditbook = [fSrcbook copy];

// display editing window, etc.

if (returnCode == NSOKButton) {
NSArray * bka = [fArrayController arrangedObjects];

int row = [bka indexOfObjectIdenticalTo: fSrcItem];
[fArrayController removeObject: fSrcItem];
[fArrayController insertObject: fEditItem 
atArrangedObjectIndex: row];
}

(I suppose I could put the remove/insert in an undo edit group, but I'd like to 
keep my undo code out of this method, if possible. No particular reason, except 
that it feels cleaner to me.)

I can't see anything in the NSArrayController class that will help me do the 
replace directly, and nothing else relevant has popped up in my searching for a 
solution. I admit, however, that I am sometimes blind to the obvious, and I 
also may have used inadequate search terms. Still, I highly doubt I'm the first 
person to want to do this, and it just seems like it should be possible to do a 
replace directly.

And I am also wondering if this is the usual way to implement editing a 
complicated object like I am attempting to do.

Any suggestions or clarifications would be greatly appreciated.

Thank you,
Bill

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Re: Creating an Application Support folder


On 12/02/2010, at 3:23 PM, Graham Cox wrote:

> That folder can be found using NSApplicationSupportDirectory


Scratch that - this returns the /Library/Application Support, not 
~/Library/Application Support

Gideon's right - use NSSearchPathForDirectoriesInDomains()

--Graham


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Re: What classes have -init?

2010-02-11 Thread Charles Srstka

On Feb 11, 2010, at 10:28 PM, Graham Cox wrote:

> On 12/02/2010, at 1:43 PM, Gordon Apple wrote:
> 
>> My point was that if all Cocoa classes called "init"
>> somewhere in their other initializers (or had a two-step initialization
>> similar to what MacApp did), then you could simply override (not call)
>> "init" for simple ivar initialization in a subclass, which would in no way
>> interfere with a designated initializer.
> 
> 
> Except that it would be all too easy to create an infinite loop. A subclass 
> might implement -init to call super's designated initializer, which later 
> calls -init.
> 
> I'm not sure what's complex about overriding the designated initializer - 
> even if it has a complex set of parameters, (and most do not) then all you do 
> is pass them up to super. Your suggestion would only save a tiny, tiny amount 
> of work yet lead to potentially big problems.
> 
> --Graham

Not really; suppose you want to subclass some class that has two separate init 
methods:

- (id)initWithFoo:(Foo *)foo;
- (id)initWithBar:(Bar *)bar;

and suppose you just want to set some initial internal state, which needs to 
always be set the same way at init time no matter how the object is 
initialized. Which init method do you override? It’s possible that the 
“initWithFoo:” method may look like this:

- (id)initWithFoo:(Foo *)foo
{
return [self initWithBar:[SomeClass convertAFooToABarSomehow:foo]];
}

in which case you’d just need to override initWithBar:. However, what happens 
if it’s actually the other way around, and initWithBar: looks like this:

- (id)initWithBar:(Bar *)bar
{
return [self initWithFoo:[SomeClass convertABarToAFooSomehow:bar]];
}

Knowing which is which requires you to have knowledge of the parent object’s 
code. And what if the implementation of the parent changes over time from one 
of the above scenarios to the other? Clearly the only way to make sure your 
init *always* gets called is to override init, initWithFoo:, *and* 
initWithBar:, and if there are more than just two initializers, this can get 
quite cumbersome. And even then, what happens if the superclass gets updated so 
that a third initializer gets added:

- (id)initWithBaz:(Baz *)baz;

which doesn’t happen to call initWithFoo: *or* initWithBar:? Now your custom 
init won’t get called at all if that initializer is used.

Incidentally, there is just such a class in Cocoa: NSDocument. It provides six 
different init methods:

- (id)init;
- (id)initForURL:(NSURL *)absoluteDocumentURL withContentsOfURL:(NSURL 
*)absoluteDocumentContentsURLofType:(NSString *)typeName error:(NSError 
**)outError;
- (id)initWithContentsOfURL:(NSURL *)absoluteURL ofType:(NSString *)typeName 
error:(NSError **)outError;
- (id)initWithType:(NSString *)typeName error:(NSError **)outError;
- (id)initWithContentsOfFile:(NSString *)fileName ofType:(NSString *)docType;
- (id)initWithContentsOfURL:(NSURL *)aURL ofType:(NSString *)docType;

Yes, the last two of these are deprecated, but it’s still possible that they 
could get called, so you’d still have to take that into account. Interestingly, 
though, someone at Apple appears to agree with Gordon here, since all of those 
NSDocument initializers actually seem to call -[self init] instead of -[super 
init], with the result that you can in fact just override -init instead of 
having to override all six methods separately (and the NSDocument subclass 
template even includes an -init method, to further encourage this).

Charles___

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Re: What classes have -init?

2010-02-11 Thread Michael Ash

On Fri, Feb 12, 2010 at 12:07 AM, Charles Srstka
 wrote:
> On Feb 11, 2010, at 10:28 PM, Graham Cox wrote:
>
>> On 12/02/2010, at 1:43 PM, Gordon Apple wrote:
>>
>>> My point was that if all Cocoa classes called "init"
>>> somewhere in their other initializers (or had a two-step initialization
>>> similar to what MacApp did), then you could simply override (not call)
>>> "init" for simple ivar initialization in a subclass, which would in no way
>>> interfere with a designated initializer.
>>
>>
>> Except that it would be all too easy to create an infinite loop. A subclass 
>> might implement -init to call super's designated initializer, which later 
>> calls -init.
>>
>> I'm not sure what's complex about overriding the designated initializer - 
>> even if it has a complex set of parameters, (and most do not) then all you 
>> do is pass them up to super. Your suggestion would only save a tiny, tiny 
>> amount of work yet lead to potentially big problems.
>>
>> --Graham
>
> Not really; suppose you want to subclass some class that has two separate 
> init methods:
>
> - (id)initWithFoo:(Foo *)foo;
> - (id)initWithBar:(Bar *)bar;
>
> and suppose you just want to set some initial internal state, which needs to 
> always be set the same way at init time no matter how the object is 
> initialized. Which init method do you override? It’s possible that the 
> “initWithFoo:” method may look like this:

You override the one that's documented to be the designated initializer.

> Incidentally, there is just such a class in Cocoa: NSDocument. It provides 
> six different init methods:
>
> - (id)init;
> - (id)initForURL:(NSURL *)absoluteDocumentURL withContentsOfURL:(NSURL 
> *)absoluteDocumentContentsURLofType:(NSString *)typeName error:(NSError 
> **)outError;
> - (id)initWithContentsOfURL:(NSURL *)absoluteURL ofType:(NSString *)typeName 
> error:(NSError **)outError;
> - (id)initWithType:(NSString *)typeName error:(NSError **)outError;
> - (id)initWithContentsOfFile:(NSString *)fileName ofType:(NSString *)docType;
> - (id)initWithContentsOfURL:(NSURL *)aURL ofType:(NSString *)docType;
>
> Yes, the last two of these are deprecated, but it’s still possible that they 
> could get called, so you’d still have to take that into account. 
> Interestingly, though, someone at Apple appears to agree with Gordon here, 
> since all of those NSDocument initializers actually seem to call -[self init] 
> instead of -[super init], with the result that you can in fact just override 
> -init instead of having to override all six methods separately (and the 
> NSDocument subclass template even includes an -init method, to further 
> encourage this).

They call -[self init] because NSDocument's designated initializer is
-init. It's not a mystery, you just read the documentation and see
which one is the designated initializer, then override that and call
super.

Mike
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Re: Replacing model objects using an NSArrayController

2010-02-11 Thread Quincey Morris

On Feb 11, 2010, at 20:33, William Peters wrote:

> My application contains several records displayed to the user in an 
> NSTableView bound to an NSArrayController. Because these records are 
> complicated (containing around thirty fields), I have implemented an Edit 
> option where the user can select one of rows in the table, click the Edit 
> button, and have a new window appear displaying all of the fields, radio 
> buttons, numeric values, etc. for changing.
> 
> I have implemented NSCopying on my data objects. When I go to display the 
> edit window, I get a reference to the selected object (myController 
> arrangedObjects / selectionIndexes / objectAtIndex), copy the data into a new 
> object for editing ([myObject copy]) and then pass that off to the 
> NSWindowController that manages the editing process. I do this so that a 
> Cancel from the editor window will not affect the original object.
> 
> All of that seems to be straightforward enough.
> 
> My question is how to get the new, edited object back into the array 
> controller.
> 
> I have implemented all of the KVC methods in the Manager class that supplies 
> the data to the NSArrayController, and they are being called for Add and 
> Delete. I've also coded a replaceObjectInMyArrayAtIndex:withObject: which I 
> would like to be called by the array controller when it swaps in the new 
> object for the old one. Although my current code does the same thing with 
> separate remove and insert calls (see below), that seems to lead to two 
> undoable actions, rather than the one I have coded in 
> replaceObjectInMyArrayAtIndex:withObject:
> 
>   fSrcbook = [selArray objectAtIndex: selItem];
>   fEditbook = [fSrcbook copy];
> 
>   // display editing window, etc.
> 
>   if (returnCode == NSOKButton) {
>   NSArray * bka = [fArrayController arrangedObjects];
> 
>   int row = [bka indexOfObjectIdenticalTo: fSrcItem];
>   [fArrayController removeObject: fSrcItem];
>   [fArrayController insertObject: fEditItem 
> atArrangedObjectIndex: row];
>   }
> 
> (I suppose I could put the remove/insert in an undo edit group, but I'd like 
> to keep my undo code out of this method, if possible. No particular reason, 
> except that it feels cleaner to me.)

There isn't a "replace" method for an array controller. If you must do it as a 
single operation, then solution would be to fetch the original object at the 
end of editing, update its properties to match the (edited) properties of the 
copy, then discard the now-temporary object copy.

However, your description doesn't completely make sense. There are no objects 
"in" an array controller. Instead, think of the array controller as a sorted, 
filtered perspective on your underlying data. Normally, the array controller is 
monitoring the underlying data via KVO, so any underlying changes are noticed 
and it adjusts itself accordingly without your writing any code.

You seem to be saying that you've already updated the underlying data model ("I 
have implemented all of the KVC methods in the Manager class ..."), in which 
case you *don't* want to mess with the array controller directly. Basically, 
there are two approaches to adding, deleting and replacing, when an array 
controller is involved:

1. Update the data model directly and KVO compliantly, and let the array 
controller notice the changes via KVO.

2. Do not update the data model directly, but use the array controller methods 
instead (removeObject:, insertObject:atArrangedObjectIndex:, etc). These 
methods internally cause the data model to be updated.

Pick one. Not both.

Method #1 is the cleanest, because it doesn't introduce the array controller 
(which is really part of your UI glue code) into the data model update, but you 
*must* ensure that the data model change is made KVO compliantly. Typically, 
that means making the changes using a mutableArrayValueForKey: proxy object.

Method #2 is a convenience when you've not built (or have not been able to 
build) a clean MVC design into your app, or when you must work with the 
"arrangedObjects" order for some reason.

Others will likely disagree with me, but I think that there's something a bit 
"smelly" about code referring to array controllers. It often indicates a defect 
in the MVC design.

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cocoa-dev@lists.apple.com

2010-02-11 Thread Eric Schlegel

On Feb 11, 2010, at 12:29 AM, Adam Warski wrote:

> Hello,
> 
> I've got a NSMenu with NSMenuItem-s and I would like to support drag&drop 
> from the menu - so that the users are able to drag the menu items out. 
> However I'm having problems attaching the even listener - can it be done? The 
> NSMenuItem only supports an action: message.

I don't think that will be possible. The actual display of the menu is handled 
by the Carbon Menu Manager, and it doesn't support the kind of hooks you'd need.

-eric

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Re: What classes have -init?

2010-02-11 Thread Quincey Morris

On Feb 11, 2010, at 21:19, Michael Ash wrote:

> You override the one that's documented to be the designated initializer.

Or, all of the ones that are documented to be the designated initializers, 
since classes are allowed to have multiple designated initializers.

The point I tried to make earlier in this thread is that there's a very simple 
rule:

A class's implementation must "cover" *every* designated initializer of its 
superclass. Period.

[As a particular case of that rule, every subclass of NSObject must "cover" 
init.]

Therefore, it is *never* necessary for a client to consider what are the 
designated initializers of the superclass, when considering how to initialize 
an object of a class it wants to instantiate.

[As a matter of implementation detail, a subclass may "cover" a super 
initializer by overriding it, to modify its behavior or to disallow its use. Or 
it may choose not to override it, effectively making the superclass's 
designated initializer also one of its own designated initializers. But this is 
just an implementation detail. Clients of the class can't tell and don't care, 
beyond knowing what are the documented designated initializers.]


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Re: What classes have -init?