The principle of the iTunes Syncing?
Hi all, Now I am developing an cocoa application. One of the app's function is to synchronize the audio and video files to the iPod/iPhone. The function is same as the iTunes Syncing function. So I want to know about the principle of the iTunes Syncing. And is there any framework to implement the Syncing function? I have refered to the developer.apple.com and other BBS. But there is little infomation about the principle of iTunes Syncing. Could anyone point me some clues about it? Thanks in advance! James ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: The principle of the iTunes Syncing?
2009/9/29 James ldl0313...@163.com: Now I am developing an cocoa application. One of the app's function is to synchronize the audio and video files to the iPod/iPhone. The function is same as the iTunes Syncing function. You have no access to the user's iTunes or iPod libraries. So I want to know about the principle of the iTunes Syncing. And is there any framework to implement the Syncing function? No. You will have to implement your own syncing functionality over the air (WiFi or cellular). The SDK does not give access to syncing over the wire with iTunes. Please file bugs about this at http://bugreport.apple.com. We would all benefit from access to at least over-the-wire syncing. --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Nib Loading Crash on Tiger only
Folks; I have converted to using SL; XC3.2; IB 3.2. I have an app with a deployment target of 10.4 There are no IB warnings; the dev target is IB 3.2 Things have been working reasonably well but now when I test on a Tiger I crash immediately Leopard and Snow Leopard are fine 2009-09-30 01:34:18.529 XYZ[8852] An uncaught exception was raised 2009-09-30 01:34:18.530 XYZ[8852] *** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (NSCoreUIImageRep) 2009-09-30 01:34:18.530 XYZ[8852] *** Uncaught exception: NSInvalidUnarchiveOperationException *** -[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (NSCoreUIImageRep) I'm using .xib files but I don't what I should even be looking for. What is this trying to tell me? Steve ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Nib Loading Crash on Tiger only
On 30/09/2009, at 4:45 PM, Steve Cronin wrote: I'm using .xib files but I don't what I should even be looking for. What is this trying to tell me? Looks like your nib contains a Leopard-only class, and therefore it can't dearchive it on Tiger. Seems to be some sort of private image rep class - are you using an image templae only available on Leopard? Have you set the deployment target for the nib file in IB? That might pick up what the problem is. --Graham ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Nib Loading Crash on Tiger only
Check your IB compatibility settings. Looks like you've archived an image into your nib that doesn't exist on Tiger. --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Nib Loading Crash on Tiger only
Kyle * Graham; The IB Info says: Deployment Target: 10.4 Development Target: IB 3.2 There are no error or warnings! What should I be looking at? Steve On Sep 30, 2009, at 1:56 AM, Kyle Sluder wrote: Check your IB compatibility settings. Looks like you've archived an image into your nib that doesn't exist on Tiger. --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: The principle of the iTunes Syncing?
On Sep 29, 2009, at 11:30 PM, Kyle Sluder wrote: 2009/9/29 James ldl0313...@163.com: Now I am developing an cocoa application. One of the app's function is to synchronize the audio and video files to the iPod/iPhone. The function is same as the iTunes Syncing function. You have no access to the user's iTunes or iPod libraries. It's possible, though quite difficult, for a desktop app to access the music library on an iPod. There are 3rd party apps such as PodWorks and Senuti that do it. From what I've heard, I believe it would take a lot of frustrating work to implement similar functionality, especially since Apple has lately begun encrypting the library database file on the iPod. For the iPod Touch and iPhone, it's pretty much impossible. The older iPods mount as dumb hard-drives, but iPhone OS devices use a custom protocol over USB, which Apple has locked down as tightly as they can to discourage messing with the phone's OS and apps. An app running on an iPhone (or iPod Touch) can look at the device's music library using the media framework, and can play tracks, but has no ability to modify the library at all. So syncing is not possible. —Jens___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Does Core Data have reserved Entity names?
After I added an Entity called Object, I get the following message when executing my application on the iPhone: objc[4219]: Class Object is implemented in both /usr/lib/ libobjc.A.dylib and /var/mobile/Applications/BFDFC14C-DB60-44BB-8118- D2AAB39E2EE6/MyApp.app/MyApp. One of the two will be used. Which one is undefined. Is Object a reserved name for a Core Data Entity on an iPhone? I don't see this message when I execute my application on the Simulator. Thanks, Alex ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Static Analyzer Question
On 30 Sep 2009, at 09:13, Greg Parker gpar...@apple.com wrote: The static analyzer tries to enforce Cocoa's memory management convention, where the retain-edness of the return value depends on the name of the method. By that convention, if the method name contains new or copy or alloc then the return value is retained and the caller is expected to release it; otherwise the return value is autoreleased and the caller is not expected to release it. I had a similar problem with the static analyzer: +(NSSet *)keyPathsForValuesAffectingCanCopyRsrcFork There is a Copy in the name of the method, but the real name (as should be considered by clang) is: +keyPathsForValuesAffectingKey The copy is just part of the Key. This is a bit confusing. Maybe Clang should be told about method names which contain a Key in it's name. Kind regards, Gerriet. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Nib Loading Crash on Tiger only -- SOLVED (well made gone...)
Folks; I opened the .xib file in a text editor -searched for 'NSCoreUIImageRep' I found one instance (thankfully) and by 'reading' the text was able to determine that it was a matrix of 2 radio buttons. I removed the offending matrix and re-instantiated a fresh one. I monitored the .xib text as I re-sized it but was unable to generate a 'NSCoreUIImageRep' again. Compiled - deployed to Tiger - works fine…. I dunno, my gut tells me that there is some way thru resize and cell spacing that IB 3.2 will use a 'NSCoreUIImageRep' but I gotta move on… Never was any IB warnings or errors…. Maybe this will help someone else… Thanks Graham and Kyle for the assist, Steve On Sep 30, 2009, at 1:56 AM, Kyle Sluder wrote: Check your IB compatibility settings. Looks like you've archived an image into your nib that doesn't exist on Tiger. --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Displaying a string with Core Animation
I am at a loss at how to display a single string at the bottom left in a view with core animation. The view is actually a ScreensaverView, and the string is a status message that should be always in front of the other layer(s). The other layer contains just an image; the layer gets removed at some point, at which I add another layer to the main layer (this transaction is animated). Right now I tried this: // make the view layer-backed and become the delegate for the layer self.wantsLayer = YES; mainLayer_ = self.layer; mainLayer_.name = @mainLayer; mainLayer_.zPosition = 0.0; mainLayer_.delegate = self; [mainLayer_ setNeedsDisplay]; Then, I create one layer containing the image and add it to the mainLayer. Eventually, the method drawRect: of my screensaverview gets called, where I render the string like so: [[NSColor blackColor] set]; NSRectFill(rects); NSMutableAttributedString * str = [[NSMutableAttributedString alloc] initWithString: mesg]; ... NSShadow * shadow1 = [[NSShadow alloc] init]; ... [str addAttribute: NSShadowAttributeName value: shadow1 range: NSMakeRange(0, [str length])]; [str drawAtPoint: NSMakePoint(0,0)]; This sort of works, EXCEPT that the string is always behind the image! I tried to set the zPosition of my image sub-layer to either +1.0 or -1.0, to no avail. I also tried to make my view layer hosted and add a CATextLayer with the string property set to my message string (and font and fontSize). But that never gets displayed. Any help will be highly appreciated. Best regards, Gabriel. smime.p7s Description: S/MIME cryptographic signature ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
This doesn't sound directly like a Core Data problem as such. Note how the message mentions nothing about entities, but instead is complaining you've got two separate classes with the same name. So you should be fine to have an entity named Object but don't make the classname that. Call it ARObject or something. On 30 Sep 2009, at 08:53, Alex Reynolds wrote: After I added an Entity called Object, I get the following message when executing my application on the iPhone: objc[4219]: Class Object is implemented in both /usr/lib/ libobjc.A.dylib and /var/mobile/Applications/BFDFC14C-DB60-44BB-8118- D2AAB39E2EE6/MyApp.app/MyApp. One of the two will be used. Which one is undefined. Is Object a reserved name for a Core Data Entity on an iPhone? I don't see this message when I execute my application on the Simulator. Thanks, Alex ___ 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/cocoadev%40mikeabdullah.net This email sent to cocoa...@mikeabdullah.net ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSTimer and modal panels
Sorry for asking again about NSTimers. My question is: I've got a modal panel (a config sheet in a screensaver) with a text field, and when I enter some text there one of my methods, -changeSomething: say, gets called. Is changeSomething executed in a different thread than my main code? I am asking, because I would like to manipulate some timers, e.g., invalidate a timer that I've set up in the init method, and install a new one. Thanks a lot in advance. Best regards, Gabriel. smime.p7s Description: S/MIME cryptographic signature ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
On Sep 30, 2009, at 3:53 AM, Alex Reynolds wrote: After I added an Entity called Object, I get the following message when executing my application on the iPhone: objc[4219]: Class Object is implemented in both /usr/lib/ libobjc.A.dylib and /var/mobile/Applications/BFDFC14C-DB60-44BB-8118- D2AAB39E2EE6/MyApp.app/MyApp. One of the two will be used. Which one is undefined. Object is the original root class in Objective-C. ObjC allows multiple root classes but Apple's implementation uses NSObject. It appears Object is still available somewhere, though. I remember reading about it years ago but I can only find references to this fact and not a clear statement of the fact itself. Hate it when that happens. Whatever the answer, the simple solution is to change your entity's name. -- I.S. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTimer and modal panels
On Sep 30, 2009, at 6:01 AM, Gabriel Zachmann wrote: My question is: I've got a modal panel (a config sheet in a screensaver) with a text field, and when I enter some text there one of my methods, -changeSomething: say, gets called. Is changeSomething executed in a different thread than my main code? All GUI events and action methods are executed on the main thread. You're being a bit paranoid regarding threads. Multi-threaded programming is a mine field, so it's good to be wary about embarking on that, yourself. However, exactly because it's so tricky, the Cocoa frameworks are not going to just arbitrarily invoke your code on some random thread. If the frameworks do something like that, you can be assured there will be warnings about it in the relevant documentation. Otherwise, frankly, none of us could make a move for fear of stepping on a mine. Cheers, Ken ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Temporarily disabling all input events while non-blocking animations are playing
Let me answer my own question myself, because I have found a
(seemingly) good way -- using run loops in NSEventTrackingRunLoopMode
mode, like the [NSView dragImage] does.
// end date to make sure the run loop will be endless in case of a
program mistake
NSDate* endDate = [NSDate dateWithTimeIntervalSinceNow:5.0];
// some exit flag set somewhere else
m_someExitFlag = false;
do
{
[[NSRunLoop currentRunLoop] runMode:NSEventTrackingRunLoopMode
beforeDate:endDate];
}
while ([(NSDate*)[NSDate date] compare:endDate] == NSOrderedAscending
!m_someExitFlag);
On Thu, Aug 27, 2009 at 3:35 PM, Oleg Krupnov oleg.krup...@gmail.com wrote:
Hi,
I'd like my app to block while an animation is playing. Normally, I
would simply use a blocking animation, but now I have two short
animations playing simultaneously, so I have to make them both
non-blocking. How do I block the app in this case? Basically I'd like
to prevent the user from (inadvertently) interacting with the app
while the animations are in progress, because the app may go into an
invalid state.
Thanks!
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Re: How to tell if NSArrayController has a selected CoreData instance?
On Sep 29, 2009, at 7:10 AM, Timothy Reaves trea...@silverfieldstech.com wrote: What makes you think you can? Logically, you shouldn't be able. I'd imagine selectedObjects is always going to return an index set; it'd just be empty with no selection. I did try comparing it to NSNoSelectionMarker just in case, and that doesn't work. Perhaps instead of imagining it would be more helpful to read the documentation. -[NSObjectController selectedObjects] returns the actual objects. You also don't seem to understand how bindings work. Even if - selectedObjects did return an NSIndexPath, it's a KVO-compliant property and therefore perfectly suitable for binding to. --Kyle Sluder I mixed up selectedIndexes. So, yes, it does return objects. However, it does not in fact return the actual objects. It returns proxies. Which is what I said in my original post. So even if there are no selected objects, you get back a non-empty array. You've read some documentation I haven't; contrary to your statement, I do understand KVO. What I don't understand is what key I would bind to to determine if that core data proxy is a proxy of a real object, or not? Which is the actual subject of the post. How to determine if the selected object returned from selection, selectedObjects, etc., is a proxy or not. Kyle, I appreciate your expertise. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to tell if NSArrayController has a selected CoreData instance?
On 30 Sep 2009, at 13:31, Timothy Reaves wrote: On Sep 29, 2009, at 7:10 AM, Timothy Reaves trea...@silverfieldstech.com wrote: What makes you think you can? Logically, you shouldn't be able. I'd imagine selectedObjects is always going to return an index set; it'd just be empty with no selection. I did try comparing it to NSNoSelectionMarker just in case, and that doesn't work. Perhaps instead of imagining it would be more helpful to read the documentation. -[NSObjectController selectedObjects] returns the actual objects. You also don't seem to understand how bindings work. Even if - selectedObjects did return an NSIndexPath, it's a KVO-compliant property and therefore perfectly suitable for binding to. --Kyle Sluder I mixed up selectedIndexes. So, yes, it does return objects. However, it does not in fact return the actual objects. It returns proxies. Which is what I said in my original post. So even if there are no selected objects, you get back a non-empty array. -[NSArrayController selectedObjects] does not return proxies, it returns the real thing. On the other hand: -[NSArrayController selection] returns a proxy that represents the overall selection NSTreeController uses proxies to represent its tree structure. On 10.5+ this is exposed as NSTreeNode. I think there is some confusion here between these things. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
properties attributes misunderstanding
Hi,
I have a class
@interface Ray : NSObject {
...
NSBezierPath*path;
...
}
@property (copy)NSBezierPath*path;
@end
an instance of which is accessed in another class:
- (void)drawRect:(NSRect)rect
{
NSBezierPath*temporaryPathPointerWhichIsSupposedToBeDifferent;
...
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path];
[temporaryPathPointerWhichIsSupposedToBeDifferent
transformUsingAffineTransform: aVeryLongDescriptiveTransformName];
[temporaryPathPointerWhichIsSupposedToBeDifferent stroke];
...
}
I thought the (copy) attribute would mean that
temporaryPathPointerWhichIsSupposedToBeDifferent would be, well, a
copy of the original path instance (which conforms to the NSCopying
protocol). Of course, the compiler doesn't care what *I* think should
happen, and applies the transform to path (which is identical to
temporaryPathPointerWhichIsSupposedToBeDifferent).
It works if I do:
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path copy];
instead.
Why isn't it doing what I think it should do though?
Thanks,
colin
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Re: properties attributes misunderstanding
On Wed, Sep 30, 2009 at 9:02 AM, Colin Howarth co...@howarth.de wrote: I thought the (copy) attribute would mean that temporaryPathPointerWhichIsSupposedToBeDifferent would be, well, a copy of the original path instance (which conforms to the NSCopying protocol). That's not what (copy) does. The copy is made when you use foo.path = bar - the setter will make a copy of bar, rather than sending a retain message to the original. sherm-- -- Cocoa programming in Perl: http://camelbones.sourceforge.net ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: properties attributes misunderstanding
Other way around. The copy happens when you *set* the property.
So ray.path = OriginalPathPointerYouStartedWith;
will copy OriginalPathPointerYouStartedWith and then set ray's member
variable to that copy. However when you READ the property, it just
returns what's in the member variable over and over again.
If you wanted it to return a copy you could if you wish write your own
accessor
-(NSBezierPath*)path
{
return( [ [ path copy ] autorelease ] );
}
which would copy it when it's accessed and give the accessor its own
one to play with. So it would be copied when you set it, and then
copied when you returned it. I'm not totally sure how much I like
that, it feels a little semantically wrong to me but in the context of
your class that might make sense. Were I really going to do that I may
not use a property at all and might have a method which is called
(NSBezierPath*)copyPath
which explicitly returns a copy of the path because that's clear.
On 30-Sep-2009, at 9:02 PM, Colin Howarth wrote:
Hi,
I have a class
@interface Ray : NSObject {
...
NSBezierPath*path;
...
}
@property (copy)NSBezierPath*path;
@end
an instance of which is accessed in another class:
- (void)drawRect:(NSRect)rect
{
NSBezierPath*temporaryPathPointerWhichIsSupposedToBeDifferent;
...
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path];
[temporaryPathPointerWhichIsSupposedToBeDifferent
transformUsingAffineTransform: aVeryLongDescriptiveTransformName];
[temporaryPathPointerWhichIsSupposedToBeDifferent stroke];
...
}
I thought the (copy) attribute would mean that
temporaryPathPointerWhichIsSupposedToBeDifferent would be, well, a
copy of the original path instance (which conforms to the NSCopying
protocol). Of course, the compiler doesn't care what *I* think
should happen, and applies the transform to path (which is identical
to temporaryPathPointerWhichIsSupposedToBeDifferent).
It works if I do:
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path copy];
instead.
Why isn't it doing what I think it should do though?
Thanks,
colin
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Re: properties attributes misunderstanding
Thanks Sherm, and Roland.
All clear. :-)
I'll leave it with
path = [ray.path copy]; // I don't do retain count stuff :-)
for now.
But I'm left wondering, from a clean coding and/or language design
point of view, is it *obvious* that the copy attribute would apply to
setting as opposed to reading? Sometimes you want the actual object
(ie. the reference or pointer to it) and sometimes you want a copy of
it (ie. a new reference / pointer).
I suppose I still have the procedural call by reference / call by
value idea in the back of my mind. There (in C) you get a copy 'by
default',
(Sorry if I mix up terms, I mostly learnt OO in perl, with a bit of
Modula-2/Oberon lurking in the background and C and asm ever-present.
Can't stand C++ or java though.)
colin
On 30 Sep, 2009, at 15:16, Roland King wrote:
Other way around. The copy happens when you *set* the property.
So ray.path = OriginalPathPointerYouStartedWith;
will copy OriginalPathPointerYouStartedWith and then set ray's
member variable to that copy. However when you READ the property, it
just returns what's in the member variable over and over again.
If you wanted it to return a copy you could if you wish write your
own accessor
-(NSBezierPath*)path
{
return( [ [ path copy ] autorelease ] );
}
which would copy it when it's accessed and give the accessor its own
one to play with. So it would be copied when you set it, and then
copied when you returned it. I'm not totally sure how much I like
that, it feels a little semantically wrong to me but in the context
of your class that might make sense. Were I really going to do that
I may not use a property at all and might have a method which is
called
(NSBezierPath*)copyPath
which explicitly returns a copy of the path because that's clear.
On 30-Sep-2009, at 9:02 PM, Colin Howarth wrote:
Hi,
I have a class
@interface Ray : NSObject {
...
NSBezierPath*path;
...
}
@property (copy)NSBezierPath*path;
@end
an instance of which is accessed in another class:
- (void)drawRect:(NSRect)rect
{
NSBezierPath*temporaryPathPointerWhichIsSupposedToBeDifferent;
...
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path];
[temporaryPathPointerWhichIsSupposedToBeDifferent
transformUsingAffineTransform: aVeryLongDescriptiveTransformName];
[temporaryPathPointerWhichIsSupposedToBeDifferent stroke];
...
}
I thought the (copy) attribute would mean that
temporaryPathPointerWhichIsSupposedToBeDifferent would be, well, a
copy of the original path instance (which conforms to the NSCopying
protocol). Of course, the compiler doesn't care what *I* think
should happen, and applies the transform to path (which is
identical to temporaryPathPointerWhichIsSupposedToBeDifferent).
It works if I do:
temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path copy];
instead.
Why isn't it doing what I think it should do though?
Thanks,
colin
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Re: NSTableColumn value binding + keypath over a relationship
I'm going to take a stab in the dark and predict that you *don't* have rearranges content automatically checked for the array controller, I do. and that checking it will cause the error message to go away. It does not. Try unchecking it. http://stackoverflow.com/questions/1028700/core-data-strange-bindings-error-on-re-opening-a-document-help - Bryan ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSRunLoop method - configureAsServer alternative in 10.6.1?
Hi, When I use [[NSRunLoop currentRunLoop] configureAsServer]; after creating a service using NSConnection, it works. But -configureAsServer is declared as deprecated with no alternative suggested. I tried removing it and the code doesn't work. server code snippet: (doesn't work) MYMessageServer *server = self;// here self is in instance of MyMessageServer class NSConnection *defaultConnection; [[NSNotificationCenter defaultCenter] addObserver:server selector:@selector(connectionDidDie:) name:NSConnectionDidDieNotification object:nil]; defaultConnection = [NSConnection serviceConnectionWithName:@MyCompanyName.MyProductName.serverFull rootObject:server]; [defaultConnection addRunLoop:[NSRunLoop currentRunLoop]]; // not doing [[NSRunLoop currentRunLoop] run]; here as its the main thread. Client code snippet: server = [[NSConnection rootProxyForConnectionWithRegisteredName :@MyCompanyName.MyProductName.serverFull host:nil] retain]; server is nil after the above line is executed. Where can I find a simple implementation? Or what changes to make to the above code? Thanks, Nick ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTableColumn value binding + keypath over a relationship
On Sep 30, 2009, at 10:22, Bryan Matteson wrote: I'm going to take a stab in the dark and predict that you *don't* have rearranges content automatically checked for the array controller, I do. and that checking it will cause the error message to go away. It does not. Try unchecking it. I tried it, did not help. Besides, I need automatic resorting (automatic at least from the user's point of view), and this is the cleanest way of doing it. http://stackoverflow.com/questions/1028700/core-data-strange-bindings-error-on-re-opening-a-document-help Similar behavior (not the same), and I am not getting any formatter related Console messages that are mentioned on that thread. I could be messing things up some other way though. Will try to isolate the issue. F ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Displaying a string with Core Animation
On Sep 30, 2009, at 3:41 AM, Gabriel Zachmann wrote: This sort of works, EXCEPT that the string is always behind the image! I tried to set the zPosition of my image sub-layer to either +1.0 or -1.0, to no avail. I think layers are always drawn in front of the view's own content. I also tried to make my view layer hosted and add a CATextLayer with the string property set to my message string (and font and fontSize). But that never gets displayed. That's the way I would do it. Something must be wrong with the way you set up the text layer; maybe its coordinates put it outside the view's bounds. —Jens___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSTimer and modal panels
On Sep 30, 2009, at 5:03 AM, Ken Thomases wrote: However, exactly because it's so tricky, the Cocoa frameworks are not going to just arbitrarily invoke your code on some random thread. Yup. Generally, the only time your code will run on a secondary thread is if — You create an NSThread — You call -performSelectorOnBackgroundThread: — You use an NSOperationQueue to schedule concurrent NSOperations — You use the new Grand Central Dispatch features in 10.6 Otherwise the main thread's runloop is going to cooperatively schedule all of the user events, timers, notifications and asynchronous delegate callbacks. —Jens___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Dynamic NSArrayContent changing [was: NSTableColumn value binding]
On Sep 30, 2009, at 10:36, Bryan Matteson wrote:
May also want to look at this.
http://www.mail-archive.com/cocoa-dev@lists.apple.com/msg31802.html
It seems to be very possible that it may be a bug, but it's also a
common coding mistake as well.
Hope it works itself out.
Bryan,
I looked into it. The problem described relates to
willChangeValueForKey not being called, thus violating KVO. This is
not the problem I have.
Further investigation seems to suggest that it is an action of mine
that triggers this. And not even the workaround that I have been using
fixes it. Actually, completely removing the table column in question
does not fix it. The problem is elsewhere, but I have a lead...
I dynamically change the content set / array of my array controller as
a user preference changes. The situation is that there is a user
preference for see all notes. If it's value is YES, then I bind my
array controller's array content to another array controller that
simply fetches all Notes. if it is NO, then I bind my array
controller's set to NSTreeController.selection.items (where selection
is a Group, and items the Notes it relates to)... It seems that this
change is causing this to happen...
Here is some extra weirdness... The error is exhibited only when I
shift back to not viewing all notes. So, when I first start up the
app, I can drag and drop no problem, regardless if viewing all notes
or the notes from the selected group. If I shift from seeing group
notes to seeing all, also no problem. Only when shifting from seeing
all to seeing selected group notes do I get this problem.
Perhaps I am not allowed to this, or need to do it differently? Here
is the code for the change... I will experiment with it... It is a
setter for a property bound to
NSUserDefaultsController.values.viewingAllNotesPref
-(void)setViewingAllNotes:(NSNumber*)newValue
{
// assign the new value
id oldValue = viewingAllNotes;
viewingAllNotes = [newValue copy];
[oldValue release];
// react appropriately
if([viewingAllNotes boolValue]){
// cache and then remove the current selection of the groups
controller
lastSelectedGroupsIndexPaths = [[groupsController
selectionIndexPaths] retain];
[groupsController setSelectionIndexPaths:nil];
// re-direct the bindings of the notesController
[notesController unbind:@contentSet];
[notesController bind:@contentArray
toObject:allNotesController
withKeyPath:@arrangedObjects
options:nil];
}else{
// restore and then release the last selection of the groups
controller
[groupsController
setSelectionIndexPaths:lastSelectedGroupsIndexPaths];
[lastSelectedGroupsIndexPaths release];
lastSelectedGroupsIndexPaths = nil;
// re-direct the bindings of the notesController
[notesController unbind:@contentArray];
[notesController bind:@contentSet
toObject:groupsController
withKeyPath:@selection.items
options:[NSDictionary dictionaryWithObject:[NSNumber
numberWithBool:YES]
forKey:NSDeletesObjectsOnRemoveBindingsOption]];
}
}
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Re: NSTextField, drawing the text offset to the right in the field
Although, to be clear, you *can* do this is in code, just not the way you were doing it. You have to make sure you're talking to this instance at the right moment, i.e. before the window appear but after the instance (the text field) has been assembled by the nib. That moment, of course, is awakeFromNib. So, in awakeFromNib, instantiate the cell (you know, alloc-init etc.) and set the textfield's cell - not its cell class, its *cell* - to that cell instance: [theTextField setCell: theCell]; If you do this in the text field's own awakeFromNib, then *all* text field's of this class will adopt the custom cell. [self setCell: theCell]; Or you can do it from elsewhere to specify that just *particular* text fields should adopt the custom cell. m. On Tue, 29 Sep 2009 20:06:08 -0600, jon trambl...@mac.com said: ahh, that was it, thanks a lot, that made perfect sense once i looked inside IB I was also surprised that IB knew about my custom cell class... I was thinking code code code... and i just needed that shove in the correct direction... you made my day, after a very long day... On Sep 29, 2009, at 7:58 PM, Kyle Sluder wrote: +setCellClass: just tells the view Hey next time you initialize yourself, make a cell of this class. Since your ImageTextField instance was created inside of IB, this is never going to happen. Instead you need to change the class of the cell from within IB, under the Identity inspector. It might be helpful to switch to the hierarchical view so you can get easy access to the text field's cell. -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSRunLoop method - configureAsServer alternative in 10.6.1?
It was actually deprecated in 10.5 according to the header, and the
10.5 release notes explain:
Deprecated NSRunLoop API
The -configureAsServer method is deprecated in 10.5. It never did
anything, so there was never a point in calling it in Mac OS X.
Since time immemorial the implementation looked like this:
- (void)configureAsServer {
}
So any apparently beneficial effect of calling it was entirely
coincidental.
Chris Kane
Cocoa Frameworks, Apple
On Sep 30, 2009, at 7:23 AM, Nick Rogers wrote:
Hi,
When I use [[NSRunLoop currentRunLoop] configureAsServer]; after
creating a service using NSConnection, it works.
But -configureAsServer is declared as deprecated with no alternative
suggested.
I tried removing it and the code doesn't work.
server code snippet: (doesn't work)
MYMessageServer *server = self;// here self is in instance of
MyMessageServer class
NSConnection *defaultConnection;
[[NSNotificationCenter defaultCenter] addObserver:server
selector:@selector(connectionDidDie:)
name:NSConnectionDidDieNotification
object:nil];
defaultConnection = [NSConnection
serviceConnectionWithName:@MyCompanyName.MyProductName.serverFull
rootObject:server];
[defaultConnection addRunLoop:[NSRunLoop currentRunLoop]];
// not doing [[NSRunLoop currentRunLoop] run]; here as its the main
thread.
Client code snippet:
server = [[NSConnection
rootProxyForConnectionWithRegisteredName
:@MyCompanyName.MyProductName.serverFull host:nil] retain];
server is nil after the above line is executed.
Where can I find a simple implementation?
Or what changes to make to the above code?
Thanks,
Nick
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Re: properties attributes misunderstanding
On Wed, 30 Sep 2009 15:02:45 +0200, Colin Howarth co...@howarth.de said: @property (copy) NSBezierPath *path; an instance of which is accessed in another class: temporaryPathPointerWhichIsSupposedToBeDifferent = [ray.path]; Why isn't it doing what I think it should do? Take a look at the docs: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/Object iveC/Articles/ocProperties.html Search on copy. It's all about the setter, not the getter. m. -- matt neuburg, phd = m...@tidbits.com, http://www.tidbits.com/matt/ A fool + a tool + an autorelease pool = cool! AppleScript: the Definitive Guide - Second Edition! http://www.tidbits.com/matt/default.html#applescriptthings ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: [Solved] NSRunLoop method - configureAsServer alternative in 10.6.1?
Hi, Very basic error: did [defaultConnection retain]; in server code. Seems very basic but when I was doing - configureAsServer, it was working without retaining. Thanks, Nick On 30-Sep-2009, at 7:53 PM, Nick Rogers wrote: Hi, When I use [[NSRunLoop currentRunLoop] configureAsServer]; after creating a service using NSConnection, it works. But -configureAsServer is declared as deprecated with no alternative suggested. I tried removing it and the code doesn't work. server code snippet: (doesn't work) MYMessageServer *server = self;// here self is in instance of MyMessageServer class NSConnection *defaultConnection; [[NSNotificationCenter defaultCenter] addObserver:server selector:@selector(connectionDidDie:) name:NSConnectionDidDieNotification object:nil]; defaultConnection = [NSConnection serviceConnectionWithName:@MyCompanyName.MyProductName.serverFull rootObject:server]; [defaultConnection addRunLoop:[NSRunLoop currentRunLoop]]; // not doing [[NSRunLoop currentRunLoop] run]; here as its the main thread. Client code snippet: server = [[NSConnection rootProxyForConnectionWithRegisteredName :@MyCompanyName.MyProductName.serverFull host:nil] retain]; server is nil after the above line is executed. Where can I find a simple implementation? Or what changes to make to the above code? Thanks, Nick ___ 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/roger_s1%40mac.com This email sent to roger...@mac.com ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Deleting CalTasks through an Array.
I have an Array of strings and want to remove CalTasks with titles of any of
the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from the Array
instead it wants the actual CalTask object.How would I delete a CalTask object
by matching it's title to a string in an array?
Cheers.
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Re: Deleting CalTasks through an Array.
On 30 Sep 2009, at 17:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles
of any of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from
the Array instead it wants the actual CalTask object.How would I
delete a CalTask object by matching it's title to a string in an
array?
The API accepts CalTask objects. Logically then you need to fetch such
objects from the store using the APIs provided. i.e. -
tasksWithPredicate:
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Sleep, NSWorkspaceWillSleepNotification, 30 seconds and the run loop
Before entering sleep I would like to send small amounts of data via
async instances of CFSocket to the local and some remote hosts.
So I register for the sleep notification:
[[[NSWorkspace sharedWorkspace] notificationCenter] addObserver: self
selector: @selector(appWillSleep:) name:
NSWorkspaceWillSleepNotification object: NULL];
And tell all my local and remote things to stop:
- (void) appWillSleep:(NSNotification*) note
{
[[thingHandler sharedInstance] stopAllRunningThings:self];
}
Now I presume that the 30 second sleep delay referred to in the docs
for NSWorkspaceWillSleepNotification means that my app can dawdle in -
appWillSleep for 30 seconds.
Is this correct?
If so then it seems likely that when this method returns the machine
may sleep before all the network data requests complete.
Is it possible to finagle the runloop within -appWillSleep to allow my
runloop attached CFSockets to persist for up to 30s before sleep
overpowers me?
Or have I got this all wrong?
Thanks
Jonathan Mitchell
Developer
http://www.mugginsoft.com
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[ANN] Snow Leopard Location Manager sample code update
If you're interested in playing with Core Location and Location Services on a Mac running Snow Leopard, I've posted updated sample code and version 1.0.3 of Lucubrator, a free test application, to my Web site at http://www.quecheesoftware.com/Quechee_Software/Lucubrator.html . The only change is to improve detection of your AirPort card status. So far, users have reported successfully finding themselves in places like Boston, Massachusetts; Hamburg, Germany; and Sydney, Australia. But failure in Bangkok. -- Bill Cheeseman b...@cheeseman.name ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
On Sep 30, 2009, at 4:04 AM, I. Savant wrote: Whatever the answer, the simple solution is to change your entity's name. Unfortunately, that simple solution means parting ways with the naming scheme of the source I'm pulling data from and changing the naming scheme for all my other entities/classes, too, which I was hoping to avoid. But thanks to all for the confirmation. -Alex ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sleep, NSWorkspaceWillSleepNotification, 30 seconds and the run loop
If by 'finagle' you mean 'run', then yes, that should work. ;-)
There's a little bit more detail here:
http://developer.apple.com/mac/library/qa/qa2004/qa1340.html
-Jeff
On Sep 30, 2009, at 11:59 AM, jonat...@mugginsoft.com wrote:
Before entering sleep I would like to send small amounts of data via
async instances of CFSocket to the local and some remote hosts.
So I register for the sleep notification:
[[[NSWorkspace sharedWorkspace] notificationCenter] addObserver: self
selector: @selector(appWillSleep:) name:
NSWorkspaceWillSleepNotification object: NULL];
And tell all my local and remote things to stop:
- (void) appWillSleep:(NSNotification*) note
{
[[thingHandler sharedInstance] stopAllRunningThings:self];
}
Now I presume that the 30 second sleep delay referred to in the docs
for NSWorkspaceWillSleepNotification means that my app can dawdle in
-appWillSleep for 30 seconds.
Is this correct?
If so then it seems likely that when this method returns the machine
may sleep before all the network data requests complete.
Is it possible to finagle the runloop within -appWillSleep to allow
my runloop attached CFSockets to persist for up to 30s before sleep
overpowers me?
Or have I got this all wrong?
Thanks
Jonathan Mitchell
Developer
http://www.mugginsoft.com
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[MEET] October CocoaHeads Mac Developer Meetings
Greetings, CocoaHeads is an international Mac programmer's group. Meetings are free and open to the public. We specialize in Cocoa, but everything Mac programming related is welcome. Australia Sydney- Thursday, October 1, 2009 18:30. Canada Ottawa/Gatineau- Thursday, October 8, 2009 19:00. Toronto- Tuesday, October 13, 2009 18:30. Victoria- Thursday, October 8, 2009 19:00. Denmark Aarhus- Tuesday, October 13, 2009 19:00. Copenhagen- Tuesday, October 13, 2009 19:00. Germany Berlin- Thursday, October 15, 2009 19:00. Stuttgart- Tuesday, October 6, 2009 19:00. Sweden Malmö- Tuesday, October 13, 2009 19:00. Switzerland Zürich- Thursday, October 8, 2009 19:00. United States Ann Arbor- Thursday, October 8, 2009 19:00. Boulder- Tuesday, October 13, 2009 19:00. Colorado Springs- Thursday, October 8, 2009 19:00. Columbia- Tuesday, October 13, 2009 19:00. Dallas- Wednesday, October 7, 2009 19:00. Fayetteville- Thursday, October 8, 2009 18:00. Lake Forest- Wednesday, October 14, 2009 19:00. New York- Thursday, October 8, 2009 18:00. Philadelphia- Thursday, October 15, 2009 19:00. St. Louis- Saturday, October 31, 2009 14:00. United Kingdom Swindon- Monday, October 5, 2009 20:00. Some chapters may have yet to post their meeting for next month. Meeting times may change. Locations and more information here: http://cocoaheads.org Also be sure to check for an NSCoder Night in your area: http://nscodernight.com/ Steve Silicon Valley CocoaHeads___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Displaying a string with Core Animation
I've been tripped up by this more than once: Did you add your new CATextLayer to your layer hierarchy? On Sep 30, 2009, at 6:41 AM, Gabriel Zachmann wrote: I also tried to make my view layer hosted and add a CATextLayer with the string property set to my message string (and font and fontSize). But that never gets displayed. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
As a general rule, you want to avoid attempting to name classes with such generic names. It makes you very much more likely to end up with a class name conflict somewhere, especially in large projects. Classname prefixes are usually what's used to help ensure there are no such conflicts. - Bryan On Sep 30, 2009, at 1:11:06 PM, Alex Reynolds wrote: On Sep 30, 2009, at 4:04 AM, I. Savant wrote: Whatever the answer, the simple solution is to change your entity's name. Unfortunately, that simple solution means parting ways with the naming scheme of the source I'm pulling data from and changing the naming scheme for all my other entities/classes, too, which I was hoping to avoid. But thanks to all for the confirmation. -Alex ___ 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/bryanhenry%40mac.com This email sent to bryanhe...@mac.com ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
On Sep 30, 2009, at 1:11 PM, Alex Reynolds wrote: Unfortunately, that simple solution means parting ways with the naming scheme of the source I'm pulling data from and changing the naming scheme for all my other entities/classes, too, which I was hoping to avoid. But thanks to all for the confirmation. I hear you, but ... them's the breaks I'm afraid. Such a basic name is sure to collide. I doubt it's as complex a problem as you're making it out to be, though: 1 - Renaming a class is easy to do with the refactoring tool in Xcode and choosing another entity name can't be *that* earth-shattering. The hardest part is finding any places you've referenced the entity by name (-insertEntityForName:...) and replacing them with the new name. 2 - Just because it's not called Object in the object model doesn't mean you can't call it Object in the user interface ... -- I.S. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Does Core Data have reserved Entity names?
Alex Reynolds wrote: Unfortunately, that simple solution means parting ways with the naming scheme of the source I'm pulling data from and changing the naming scheme for all my other entities/classes, too, which I was hoping to avoid. But thanks to all for the confirmation. Maybe: #define Object AlexObject imported into every source file. It's BFI, but surprisingly effective at times. -- GG ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
IKImageView imageCorrection property
Hi all, Last night I was trying to use the imageCorrection property on an IKImageView, but it wasn't working for me. Setting the property to a CIFilter didn't have any effect. The property remained nil. Is there something I'm missing? Thanks, jon ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSRunLoop method - configureAsServer alternative in 10.6.1?
On Sep 30, 2009, at 9:17 AM, Christopher Kane wrote:
Since time immemorial the implementation looked like this:
- (void)configureAsServer {
}
So any apparently beneficial effect of calling it was entirely
coincidental.
No way! I know people who were cured of cancer by calling -
configureAsServer. My grandma used to call it every day, and she lived
to be 97. I make sure to call it in all my apps, and when it returns I
can feel this incredible surge of energy.
—Jens___
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Re: Deleting CalTasks through an Array.
On Sep 30, 2009, at 12:32, Joshua Garnham wrote:
I have an Array of strings and want to remove CalTasks with titles
of any of the strings.
I know I can loop through a array with
for(NSString *title in array) {
}
and delete tasks with
removeTask:title error:nil
But it won't let me delete a CalTask object with the strings from
the Array instead it wants the actual CalTask object.How would I
delete a CalTask object by matching it's title to a string in an
array?
Joshua,
You need to use CalCalendarStore's method taskPredicateWithCalendar,
passing it all calendars to get the tasks, then compare titles and
delete if necessary.
// make a predicate for all tasks
NSPredicate* allCalendarsTaskPredicate = [CalCalendarStore
taskPredicateWithCalendar:[CalCalendarStore calendars]];
// fetch all the tasks
NSArray* allTasks = [[CalCalendarStore defaultCalendarStore]
tasksWithPredicate:allCalendarsTaskPredicate];
// delete them
for(CalTask* task in allTasks)
if([arrayOfTitles contains:tast.title])
// delete task
More or less... Sorry for the typos, I am writing directly to mail.
What would be more efficient and *might* work is creating a compound
predicate out of the allTasks predicate and a predicate that would
discriminate tasks that don't have a matching title. However, I am not
sure that predicate would work with the CalendarStore. Something to
explore if the performance is an issue.
HTH
F
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poor performance when scrolling scaled text view, with small number of characters per line only
I'm seeing very poor performance when programmatically scrolling an NSTextView under certain conditions. The text view is scaled using [NSView scaleUnitSquareToSize:], and the scroll amounts are fractional (I need to exactly match the appearance of a smaller text view that is also being scrolled). In most cases, performance is fine, but when the the number of characters is small (e.g. the first line contains a - i, separated by spaces), I see very poor performance when text is just leaving the top, or just entering the bottom of the text view. It's so noticeable that you can see the text speed up when the characters start to overlap, and then speed up when the interval between lines reaches one of the edges. When only the top or bottom overlaps, performance is fine, and when the number of characters per line is greater (e.g. a-o), performance is fine too. Using the CPU Sampler template in Instruments clearly shows the performance slow down - the CPU graph is clearly saw-toothed in the pathological case, and flat and much lower in the non-pathological cases. In the peaks, most 70% of CPU is spent in CGSScanConvolveAndIntegrateRGB, at the bottom of the following stack trace: CGSScanConvolveAndIntegrateRGB CGSScanConverterRendermask glyph_path_end CGFontGetGlyphPaths CGFontCreateGlyphBitmaps32 CGFontCreateGlyphBitmaps create_missing_bitmaps CGGlyphLockLockGlyphBitmaps ripc_RenderGlyphs ripc_DrawGlyphs draw_glyphs CGContextShowGlyphsWithAdvances -[NSLayoutManager(NSTextViewSupport) showPackedGlyphs:length:glyphRange:atPoint:font:color:printingAdjustment:] Can anyone shed any light on this, or how I might avoid it? What's weird, is that I only get the problem when the number of characters per line is small ... -- http://www.mildmanneredindustries.com/ ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Strange Core Data save behaviour (required relationship nil... when it is set the line before saving)
On Sep 30, 2009, at 12:56 AM, Luke Evans wrote: Well, I'm more than happy to file a bug, as it has been tricky to figure out (and I would probably still be at it without your interjection). There are several ways to frame the problem of course: it could be a documentation bug... things aren't as simple as might first appear in the docs/guide, or maybe something can be done to have deleted object behave in a 'friendlier' manner w.r.t. their defunct relationships. I suppose I can just find a general form of words and let you good folks figure out what it really means in practice :-) Probably some of both. I still think I might have something more to figure out here too. At the end of my testing, as an experiment I had a main thread timer fire periodically to perform a save on the main thread's MOC (without performing any changes on the main thread's MOC at all). This induced the same problem, and I'm still curious as to how the main thread's copy of the graph might have the nil in the relationship under these conditions. AFAICS there shouldn't have been any chance for either MOC to be in this condition at any time. I assume the merge operation from the other thread is 'atomic' somehow and activity on another thread (like a save) should not be able to catch that MOC in some kind of in-between state? merge ? I'm not sure I have a full grasp on your work flow here. If you call mergeChangesFromContextDidSaveNotification, then that can obviously make changes to the object graph. There are two other issues in play. First, if you've set a merge policy, then the MOC may pull in changes necessary to make the save correct (e.g. implement and correct an optimistic locking failure). Second, firing a timer on the main thread is totally non-deterministic with respect to anything else on the main thread. The application event loop is rather amorphously defined, so timers can fire either inside or outside the main thread's current event's undo grouping. Timers are intrinsically very unpredictable. Aside from this 'stress' test though, I haven't (yet) got it to fall over - essentially under the conditions where only one thread (albeit one of several threads on any occasion) is making changes and saving at a time. I'm not sure I understand this last comment. Do you have threads sharing a MOC ? Because threads with their own MOCs can make their own changes and own saves simultaneously. - Ben ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
If anyone has any clue at all on this, or even some random thing that i could try to get this to work, i'd be most syked. thanks again. Just before we put up the dialog, we enable undo, cut, copy, paste, clear, and select all. these items all have the correct HICommand assigned (eg: select all has kHICommandSelectAll as it's tag) Tag? kHICommandSelectAll? This is the cocoa-dev list. ;-) okye, well yes: [nsMenuItem setTag: kHICommandSelectAll]; The Select All item needs a target of First Responder and an action of -selectAll:. okay fine. so just before i put up the OS dialog, i now set the action to selectAll and the target to nil (first reponder, right?) [nsMenuItem setAction:@selector(selectAll:)]; [nsMenuItem setTarget:nil]; i also enable the menu item then i put up my NSPanel (the save dialog) however the edit menu is completely disabled, specifically the SelectAll command is still disabled. what else could i possibly be missing ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
Why was the menu item ever not connected to First Responder? --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
we set the menu itself to be it's own first responder this app came from legacy carbon code and we still go thru the ancient menu dispatching mechanism. the menu's own first responder all it does is take note of the menu ID and menu item index and fake up the result of the old menuselect function, and send that fake event to the app to handle, since that's what it knows how to handle. but that's not the issue now with the cocoa dialog. before the dialog comes up i've done everything expected (AFAIK) but the menu still is disabled. On Sep 30, 2009, at 12:47 PM, Kyle Sluder wrote: Why was the menu item ever not connected to First Responder? --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sleep, NSWorkspaceWillSleepNotification, 30 seconds and the run loop
On Sep 30, 2009, at 9:59 AM, jonat...@mugginsoft.com wrote: Before entering sleep I would like to send small amounts of data via async instances of CFSocket to the local and some remote hosts. It's usually best to close open sockets entirely before going to sleep. The socket might not work anymore when the system wakes (especially on a laptop). Also, it tells the peer on the other end you won't be able to receive any data. Now I presume that the 30 second sleep delay referred to in the docs for NSWorkspaceWillSleepNotification means that my app can dawdle in -appWillSleep for 30 seconds. Is this correct? If so then it seems likely that when this method returns the machine may sleep before all the network data requests complete. It shouldn't take 30 seconds to send a few packets to servers. And the user really doesn't want a forced-sleep to be delayed — it's frustrating when you shut your MacBook because you have to take it to a meeting, and it sits and sits and sits before the sleep indicator starts pulsing. —Jens___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
[NSTextView] Shift left / Undo manager
I am currently busy re-inventing the wheel in the form a code editor. I support Shift Left and Shift Right. I would like to support Undo on Shift Left. I'm wondering how this should be done as this operation modifies both the selected range(s) and the text. I searched the archives, the NSTextView header, documentation, looked at some source code. I am able to support the undo operation for the text changes but the selected range(s) is/are not reverted to the correct value(s). From what I can see, Xcode (on Tiger) does not handle the selection correctly in this case either (though the result is better than mine) Any idea? ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Strange Core Data save behaviour (required relationship nil... when it is set the line before saving)
I don't think anyone has cared enough to file a bug on this. I don't get it. There's an open manhole in the street with the manhole cover lying right next to it, and the problem is that no one cared enough to call the Department of Works to complain? This has come up 3 or 4 times in about 6 years. So, is it an open manhole in the middle of the street, or is it that the unpaved road behind your house that nobody uses is missing a street sign ? A quick glance suggests this should be pretty easy to fix, but that the obvious fix will be slower. Should everyone's deletes get slower just to spare Luke ? Maybe. Hard to say without quantifying it. So, now some performance tests need to get written, and the results measured. Also, there's no bug report, and no developer provided test case to verify the fix. So that needs to get written too. Should we spend our time on this or, judging by complaints, something more important ? cocoa-dev is not a bug reporting forum. - Ben ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sleep, NSWorkspaceWillSleepNotification, 30 seconds and the run loop
On 30 Sep 2009, at 20:57, Jens Alfke wrote: On Sep 30, 2009, at 9:59 AM, jonat...@mugginsoft.com wrote: Before entering sleep I would like to send small amounts of data via async instances of CFSocket to the local and some remote hosts. It's usually best to close open sockets entirely before going to sleep. The socket might not work anymore when the system wakes (especially on a laptop). Also, it tells the peer on the other end you won't be able to receive any data. I intend to send off my bit of data, hang around ( = 30 secs) to get notification and then close everything. I can take action at the remote end based on observing the socket closing rather than sending the pre-sleep data. But I get a cleaner shutdown. A deliberate stop rather than an unexpected socket disconnection error. Now I presume that the 30 second sleep delay referred to in the docs for NSWorkspaceWillSleepNotification means that my app can dawdle in -appWillSleep for 30 seconds. Is this correct? If so then it seems likely that when this method returns the machine may sleep before all the network data requests complete. It shouldn't take 30 seconds to send a few packets to servers. And the user really doesn't want a forced-sleep to be delayed — it's frustrating when you shut your MacBook because you have to take it to a meeting, and it sits and sits and sits before the sleep indicator starts pulsing. I intend to observe the requests and hopefully sleep ASAP. Not sure though that having called IOCancelPowerChange(,) wether it can be revoked before the 30 secs are up. Perhaps a call to IOAllowPowerChange() will be effective. Other options might be: According to http://developer.apple.com/mac/library/qa/qa2001/qa1134.html I can send the kAESleep event to the loginwindow process. Don't know yet if trying to initiate sleep again so will prove useless/ effective/disatrous. call IODeregisterForSystemPower() to see if that has any effect. —Jens Jonathan Mitchell Developer http://www.mugginsoft.com ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Static Analyzer Question
To continue a bit on this idea, I believe that the static analyzer only analyzes a single method at a time. I don't believe it recurses into called methods to do analysis. (Can any of the clang-sa folks confirm this?) Dave On Sep 29, 2009, at 6:31 PM, Jens Alfke wrote: On Sep 29, 2009, at 5:12 PM, Steve Cronin wrote: Why does Clang believe that an 'owning retain count is expected' if the method is never called? Objective-C is a dynamic enough language that there is no way to tell at compile time whether a method is reachable or not. Even if that selector never appears in your code, it could be constructed at runtime, or your code could load a plugin bundle that calls that selector. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sleep, NSWorkspaceWillSleepNotification, 30 seconds and the run loop
Not sure though that having called IOCancelPowerChange(,) wether it can be revoked before the 30 secs are up. Perhaps a call to IOAllowPowerChange() will be effective. The above is garbled nonsense . I can achieve the desired goal by NOT calling either IOCancelPowerChange() or IOAllowPowerChange() immediately. All that is necessary is to have registered for the IOKit notification. Having done so I have 30 seconds in which to respond with either IOCancelPowerChange() or IOAllowPowerChange(). So I can trigger my network comms in void MGSSleepCallBack( void * refCon, io_service_t service, natural_t messageType, void * messageArgument ) and when done simply call IOAllowPowerChange() to initiate sleep. Jonathan Mitchell Developer http://www.mugginsoft.com ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Weird NSToolbar glitch
Hey everyone. I'm completely at a loss on this one. Here's a pic of what's happening to the toolbar. http://img268.imageshack.us/img268/9236/screenshot20090930at337.png It happens sometimes when I resize the toolbar and stays until I close and reopen the window. It's just a standard toolbar set up in IB, nothing special done to it. Thanks. B ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Static Analyzer Question
On Sep 29, 2009, at 8:00 PM, Dave DeLong wrote: To continue a bit on this idea, I believe that the static analyzer only analyzes a single method at a time. I don't believe it recurses into called methods to do analysis. (Can any of the clang- sa folks confirm this?) It will perform analysis for statically bound calls, which is restricted to functions, not methods. As you suspect, since method calls are dynamically bound, the analyzer has no way of knowing what actual implementation will be invoked at runtime. Cheers, Ken ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Weird NSToolbar glitch
Hi Bryan, It's not much info to go on... perhaps NSToolbar objects to the Spice Girls or Gloria Estafan? =) What have you tried (.com)? The screenshot makes a lot of the controls look... nonstandard. Perhaps try removing some of your customisations one at a time and see how it affects the problem? It's the sort of problem that might have been hanging around for a while unnoticed (resizing toolbars isn't one of the first things I try after making UI changes). Matt -- Safe, comfortable and satisfied? Consider supporting some people who aren't! I'm riding 100 kilometres to raise funds for refugees! http://my.e2rm.com/personalPage.aspx?registrationID=750445 ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
so am i just out of luck on this? i am completely out of ideas. On Sep 30, 2009, at 12:57 PM, David M. Cotter wrote: we set the menu itself to be it's own first responder this app came from legacy carbon code and we still go thru the ancient menu dispatching mechanism. the menu's own first responder all it does is take note of the menu ID and menu item index and fake up the result of the old menuselect function, and send that fake event to the app to handle, since that's what it knows how to handle. but that's not the issue now with the cocoa dialog. before the dialog comes up i've done everything expected (AFAIK) but the menu still is disabled. On Sep 30, 2009, at 12:47 PM, Kyle Sluder wrote: Why was the menu item ever not connected to First Responder? --Kyle Sluder ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Cocoa UI Libraries?
I've come across a few different user-contributed Cocoa UI elements, like one that provided a Mail or iTunes-like sidebar. But now I can't find them. I can't seem to find the right Google search term, either. Can anyone point me to some of these libraries? Thanks! -- Rick ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
On Sep 30, 2009, at 5:57 PM, David M. Cotter wrote: so am i just out of luck on this? i am completely out of ideas. So, forgive me if this was covered earlier in the thread... You have set the open panel to allow multiple selections, right? [panel setAllowsMultipleSelection:YES] Regards, Ken ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Weird NSToolbar glitch
It's not much info to go on... perhaps NSToolbar objects to the Spice Girls or Gloria Estafan? =) What have you tried (.com)? ;) Yea I'm sorry I guess it's not much to go on, that's how I feel though. Basically I have a NIB file controlled by NSViewController that contains a view and a toolbar. From the picture you see that I'm using tabs, basically each tab has a view and a toolbar, and clicking each tab sets a different view and toolbar. The tabs work exactly like Safari's bookmark tabs. The problem arises when I drag a tab off the bar and it creates a new window controller / window instance and adds itself as a tab there. I'm setting the same view controller from the old tab to the new tab, and calling setToolbar on the new window. That's when the glitch happens. OK I seem to have found a solution. That's the way it works though, you beat your head against the wall all day and just when you're frustrated enough to ask for help, you figure it out. It seems to work if I create a new view controller instance from the NIB. Why is it that I can't just swap a toolbar from one window to the other? The other window has been properly destroyed (I think, I'm using GC). ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Cocoa UI Libraries?
On Sep 30, 2009, at 6:00 PM, Rick Mann wrote: I've come across a few different user-contributed Cocoa UI elements, like one that provided a Mail or iTunes-like sidebar. But now I can't find them. I can't seem to find the right Google search term, either. Can anyone point me to some of these libraries? http://th30z.netsons.org/2009/03/cocoa-sidebar-with-badges-take-2/ http://brandonwalkin.com/bwtoolkit/ Here's a couple good ones, I think. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Cocoa UI Libraries?
On 9/30/09 4:00 PM, Rick Mann said: I've come across a few different user-contributed Cocoa UI elements, like one that provided a Mail or iTunes-like sidebar. But now I can't find them. I can't seem to find the right Google search term, either. Can anyone point me to some of these libraries? One is BWToolkit: http://brandonwalkin.com/bwtoolkit/ -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Some more questions on NSOpenPanel
no, this is the save dialog. i'm talking about the text edit field. i want to be able to cut / copy / paste / select all in the TE field of the save dialog On Sep 30, 2009, at 4:05 PM, Ken Thomases wrote: On Sep 30, 2009, at 5:57 PM, David M. Cotter wrote: so am i just out of luck on this? i am completely out of ideas. So, forgive me if this was covered earlier in the thread... You have set the open panel to allow multiple selections, right? [panel setAllowsMultipleSelection:YES] Regards, Ken ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Mixed Core Data and static nodes in outline view
I'm looking at ways of grouping some Core Data objects in a outline view. What I have are 3 or 4 different entities, and I want each of the objects of each type to appear under a parent item in the outline view. Currently, I've implemented a simple table view and it's bound to an array controller that gets the objects from Core Data. Now I want to expand that same list to handle the other objects, so an outline view seems natural, with the top level nodes corresponding to the various types of entities, and the entities existing below. Since the model doesn't have any notion of groups, I'd like to programmatically create the top entities, and have core data manage the children of each. Is this even possible? TIA, Rick ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Cocoa UI Libraries?
Our CocoaHeads group has a decent list of code like this too: http://cocoaheads.byu.edu/resources/user-interface (You're welcome to add to it, too!) Dave ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Mixed Core Data and static nodes in outline view
On 9/30/09 4:22 PM, Rick Mann said: I'm looking at ways of grouping some Core Data objects in a outline view. What I have are 3 or 4 different entities, and I want each of the objects of each type to appear under a parent item in the outline view. Currently, I've implemented a simple table view and it's bound to an array controller that gets the objects from Core Data. Now I want to expand that same list to handle the other objects, so an outline view seems natural, with the top level nodes corresponding to the various types of entities, and the entities existing below. You could certainly do it without bindings and use the delgate/datasoure methods of NSOutlineView. A bit of a PITA though. -- Sean McBride, B. Eng s...@rogue-research.com Rogue Researchwww.rogue-research.com Mac Software Developer Montréal, Québec, Canada ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Mixed Core Data and static nodes in outline view
On Sep 30, 2009, at 16:30:24, Sean McBride wrote: On 9/30/09 4:22 PM, Rick Mann said: I'm looking at ways of grouping some Core Data objects in a outline view. What I have are 3 or 4 different entities, and I want each of the objects of each type to appear under a parent item in the outline view. Currently, I've implemented a simple table view and it's bound to an array controller that gets the objects from Core Data. Now I want to expand that same list to handle the other objects, so an outline view seems natural, with the top level nodes corresponding to the various types of entities, and the entities existing below. You could certainly do it without bindings and use the delgate/ datasoure methods of NSOutlineView. A bit of a PITA though. Yeah, I was hoping to use bindings and let core data handle the bulk of the work. Somehow. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSWindowController and GC
On 01/10/2009, at 9:20 AM, Bryan Matteson wrote: I was just reminded of something. I use GC in my app, and unless I specifically disable collection for a window controller, it's destroyed as soon as it loses key. I solved it by setting the controller as the delegate of the window, disabling collection for the window controller in windowDidLoad, and re-enabling it in windowWillClose:. Is there another way? Disabling collection for the window controller in this way is a bit of a hack. With Garbage Collection, you need to make sure you have a strong reference to the window controller somewhere. This generally means making the window controller an ivar of another object, e.g. your NSDocument instance. What object creates your window controller in the first place? That's probably the object that needs to hang on to it. -- Rob Keniger ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
When to customise the Print Panel?
Hi all, I can see how to add/remove an accessory view to NSPrintPanel using - addAccessoryController:, but I'm baffled about when I get the opportunity to call this. Currently I'm adding an accessory view to the Page Setup panel in my document's -preparePageLayout: method, but really that's the wrong place to do what I want - the options really belong in the Print panel. NSDocument doesn't have an equivalent - preparePrintPanel: method. What should I be doing? --Graham ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Mixed Core Data and static nodes in outline view
On Sep 30, 2009, at 16:22:45, Rick Mann wrote: I'm looking at ways of grouping some Core Data objects in a outline view. What I have are 3 or 4 different entities, and I want each of the objects of each type to appear under a parent item in the outline view. Currently, I've implemented a simple table view and it's bound to an array controller that gets the objects from Core Data. Now I want to expand that same list to handle the other objects, so an outline view seems natural, with the top level nodes corresponding to the various types of entities, and the entities existing below. Since the model doesn't have any notion of groups, I'd like to programmatically create the top entities, and have core data manage the children of each. Is this even possible? Do you think I could create an plain Obj-C object with appropriate accessors to act as my grouping object, and then have it implement Core Data fetch operations to return the children? I don't know, though, how to get changes in the managed object context to be automatically reflected in the tree view using this technique. I'm sure there's some observer/key notification thing to set up, but I'm not very fluent in the programmatic aspects of that stuff. -- Rick ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSDocumentController didCloseAllSelector
The doco for closeAllDocumentsWithDelegate:didCloseAllSelector:contextInfo: says that it should call the didCloseAllSelector. How would one do that? This is what I am doing: [delegate performSelector:didCloseAllSelector withObject:(id)YES withObject:contextInfo]; but I'm nervous about that typecast. Is that the way, or is there another way? __ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/ ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSWindowController and GC
The right way is to make sure something in your program retains a pointer to your window controller. Sometimes there will be an obvious place, like a member of the object that created the window controller. That is most typical. Worst case is you retain a pointer in some global variable or similar, but that also has a greater danger that you will forget to zero it out when you are finished with it, and it won't get collected. Some of my temporary dialog box controllers inherit from a class that puts itself in a global dictionary when created, and removes itself when the window closes. From: Bryan Matteson brysco...@gmail.com To: cocoa-dev@lists.apple.com Sent: Thursday, 1 October, 2009 9:20:16 AM Subject: NSWindowController and GC I was just reminded of something. I use GC in my app, and unless I specifically disable collection for a window controller, it's destroyed as soon as it loses key. I solved it by setting the controller as the delegate of the window, disabling collection for the window controller in windowDidLoad, and re-enabling it in windowWillClose:. Is there another way? -B ___ 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/idou747%40yahoo.com This email sent to idou...@yahoo.com __ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/ ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSDocumentController didCloseAllSelector
On 01/10/2009, at 11:00 AM, Chris Idou wrote: The doco for closeAllDocumentsWithDelegate:didCloseAllSelector:contextInfo: says that it should call the didCloseAllSelector. How would one do that? This is what I am doing: Chris, this stuff is a right old mess. No wonder you're confused. It says *it* will call that method if all documents are closed. You don't necessarily have to call anything - looking at the byzantine interactions between all these methods all I can say is, if you can avoid it, do so! What do you want to do? Unless you're overriding - (void) canCloseDocumentWithDelegate:(id)delegate shouldCloseSelector:(SEL) shouldCloseSelector contextInfo:(void *)contextInfo to do something in a non-standard way there's nothing to do. If you are overriding it, you need to handle the whole kit-n-kaboodle, including presenting the alert to the user and saving the document to disk, and finally invoking the mysterious callback selector. I can't actually see an easy way to invoke the callback selector with the signature as given - you need to pass it the document (self), a BOOL and the contextInfo. You can invoke the method directly on the delegate easily enough, but since you're supposed to use the callback supplied, that might not work. The only way I can see to do it is to create an NSInvocation with the selector, set each argument and call invokeWithTarget: passing the delegate. Someone else might have a brighter idea - this seems very involved and badly thought-out. --Graham ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSLayoutManager and best override point for temporary attributes
Hi Keith, I have certain custom text attributes that are used in my NSTextStorage to which I would like to add temporary attributes via the NSLayoutManager. What version of OSX are you testing under? Under Leopard there's a bug in -[NSLayoutManager temporaryAttribute:atCharacterIndex:longestEffectiveRange:inRange:] that calculates effective ranges that are too short. For specific test cases this caused big inefficiencies in the text system. I believe this bug is fixed in Snow Leopard. more recently I have taken to overriding NSLayoutManager's - temporaryAttributesAtCharacterIndex:effectiveRange: If this is too slow, then I'd look to using some kind of cache for your calculations. But really, NSLayoutManager's temporary attributes are already a cache; one likely to be specifically designed for high performance index/run access. I think your original idea of setting temporary attributes whenever text changes would be the most efficient. Perhaps you're recalculating too much, too often? I don't know the access patterns for temporary attributes, but I would guess they are only queried when associated text is displayed on screen. If that's the case, you could fix them up lazily, eg: whenever text changes just note down that the attributes are dirty in that range. Your temporary attribute methods in your NSLayoutManager subclass can then ensure that temporary attributes are not dirty before they are returned. If none of that is efficient enough, you could rig up a NSTextStorage subclass that has two sets of attributes: one set for private use and another derived set which only the layout system sees. Hopefully some of that helps, ~Martin ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Best Design Advice
If it displays a window it should be an app. If its an app it should be in /Applications and it should be started from Login Items. You can't install it automatically by security design. But once you get the user to install and run it, there are no permissions issues in adding it to login items (although asking the user is polite), and connecting to your web site. From: David Blanton aired...@tularosa.net To: cocoa-dev List cocoa-dev@lists.apple.com Sent: Sunday, 15 November, 2009 4:21:31 AM Subject: Best Design Advice I need to create an app the is auto downloaded and installed from a web site when the user clicks a web page button. The app needs to be installed so that it always runs when the user logs in. The app needs to periodically (by user preference setting) connect to a web server. The app needs to display a window with information gleaned from its last web server connect. = 1. Where should the app be installed. 2. Are there any permission issues. 3. Is this a background service or status like item. 4. Is it's periodic web connect fired by a timer or some other means. 5. Any other general tips / tricks. = Thanks in advance! db ___ 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/idou747%40yahoo.com This email sent to idou...@yahoo.com __ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/ ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSDocumentController didCloseAllSelector
On Sep 30, 2009, at 6:42 PM, Graham Cox wrote: I can't actually see an easy way to invoke the callback selector with the signature as given - you need to pass it the document (self), a BOOL and the contextInfo. You can invoke the method directly on the delegate easily enough, but since you're supposed to use the callback supplied, that might not work. The only way I can see to do it is to create an NSInvocation with the selector, set each argument and call invokeWithTarget: passing the delegate. NSInvocation is the correct way to handle this. See the 10.5 release notes, and search for NSInvocation on that page: http://developer.apple.com/mac/library/releasenotes/Cocoa/AppKitOlderNotes.html#X10_5Notes That should bring you to a helpful discussion titled Advice for Overriders of Methods that Follow the delegate:didSomethingSelector:contextInfo: Pattern. smime.p7s Description: S/MIME cryptographic signature ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Releasing NSSearchPathForDirectoriesInDomain causes crash
Does anybody know why releasing the NSArray obtained from
NSSearchPathForDirectoriesInDomain causes my iPhone app to crash?
Here's my code:
+ (NSString *)dataFilePath:(NSString *)filename {
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *directory = [paths objectAtIndex:0];
[paths release];
return [directory stringByAppendingPathComponent:filename];
}
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Description: S/MIME cryptographic signature
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Re: NSDocumentController didCloseAllSelector
What I have is a document based app, but it automatically saves everything - I don't want to ask the user. So I'm saving all my documents in closeAllDocumentsWithDelegate. It's working pretty good, the only major hassle is the app doesn't die on machine shutdown, presumably because I wasn't calling didCloseAllSelector. I agree the whole setup is pretty confusing but after ponding it extensively, I think it is more or less sensible, given the need for the RunLoop and so on. (albeit, poorly documented). I'm not sure what you mean you can invoke the method easily enough. Maybe the right way to do it is with NSInvocation. But knowing what I know about objective-c, I can't see how setArgument:atIndex: would be able to know that the second argument is a BOOL which is one byte. Maybe it does know and it all just works. From: Graham Cox graham@bigpond.com To: Chris Idou idou...@yahoo.com Cc: cocoa-dev@lists.apple.com Sent: Thursday, 1 October, 2009 11:42:05 AM Subject: Re: NSDocumentController didCloseAllSelector On 01/10/2009, at 11:00 AM, Chris Idou wrote: The doco for closeAllDocumentsWithDelegate:didCloseAllSelector:contextInfo: says that it should call the didCloseAllSelector. How would one do that? This is what I am doing: Chris, this stuff is a right old mess. No wonder you're confused. It says *it* will call that method if all documents are closed. You don't necessarily have to call anything - looking at the byzantine interactions between all these methods all I can say is, if you can avoid it, do so! What do you want to do? Unless you're overriding - (void)canCloseDocumentWithDelegate:(id)delegate shouldCloseSelector:(SEL)shouldCloseSelector contextInfo:(void *)contextInfo to do something in a non-standard way there's nothing to do. If you are overriding it, you need to handle the whole kit-n-kaboodle, including presenting the alert to the user and saving the document to disk, and finally invoking the mysterious callback selector. I can't actually see an easy way to invoke the callback selector with the signature as given - you need to pass it the document (self), a BOOL and the contextInfo. You can invoke the method directly on the delegate easily enough, but since you're supposed to use the callback supplied, that might not work. The only way I can see to do it is to create an NSInvocation with the selector, set each argument and call invokeWithTarget: passing the delegate. Someone else might have a brighter idea - this seems very involved and badly thought-out. --Graham __ Get more done like never before with Yahoo!7 Mail. Learn more: http://au.overview.mail.yahoo.com/ ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSDocumentController didCloseAllSelector
On 01/10/2009, at 12:06 PM, Adam R. Maxwell wrote: NSInvocation is the correct way to handle this. See the 10.5 release notes, and search for NSInvocation on that page: http://developer.apple.com/mac/library/releasenotes/Cocoa/AppKitOlderNotes.html#X10_5Notes That should bring you to a helpful discussion titled Advice for Overriders of Methods that Follow the delegate:didSomethingSelector:contextInfo: Pattern. Wow. I thought it was byzantine even before I read this ;-) At least it gives some rationale for the design, which helps. Chris, looks like this is what you have to do. --Graham ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Releasing NSSearchPathForDirectoriesInDomain causes crash
Yes, because it's not yours to release.
RTFMMGA:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmObjectOwnership.html#//apple_ref/doc/uid/2043-BEHDEDDB
--Graham
On 01/10/2009, at 12:07 PM, Anthony Smith wrote:
Does anybody know why releasing the NSArray obtained from
NSSearchPathForDirectoriesInDomain causes my iPhone app to crash?
Here's my code:
+ (NSString *)dataFilePath:(NSString *)filename {
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *directory = [paths objectAtIndex:0];
[paths release];
return [directory stringByAppendingPathComponent:filename];
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Re: NSWindowController and GC
Thank you Chris, Rob. I thought as much, but then I'm new to using GC. I thought that because I was able to access the window controller through the window that it was still reachable in the object graph. You know, like [[aSampleView window] windowController]; Thought that meant there was a pointer already stored in the window instance, so unless the window was closed, it would not be collected. Thank you for clearing that up, I think I'll go with the global dictionary, as these window controller instances are created from several different places. -B The right way is to make sure something in your program retains a pointer to your window controller. Sometimes there will be an obvious place, like a member of the object that created the window controller. That is most typical. Worst case is you retain a pointer in some global variable or similar, but that also has a greater danger that you will forget to zero it out when you are finished with it, and it won't get collected. Some of my temporary dialog box controllers inherit from a class that puts itself in a global dictionary when created, and removes itself when the window closes. ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Releasing NSSearchPathForDirectoriesInDomain causes crash
Awesome! Thanks!
On Sep 30, 2009, at 10:18 PM, Graham Cox wrote:
Yes, because it's not yours to release.
RTFMMGA:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmObjectOwnership.html#//apple_ref/doc/uid/2043-BEHDEDDB
--Graham
On 01/10/2009, at 12:07 PM, Anthony Smith wrote:
Does anybody know why releasing the NSArray obtained from
NSSearchPathForDirectoriesInDomain causes my iPhone app to crash?
Here's my code:
+ (NSString *)dataFilePath:(NSString *)filename {
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *directory = [paths objectAtIndex:0];
[paths release];
return [directory stringByAppendingPathComponent:filename];
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Re: Releasing NSSearchPathForDirectoriesInDomain causes crash
Does the Cocoa memory management documentation cover functions? It
specifically refers to ...a method whose name begins with I
wonder if something like the CF Create rule applies to Foundation?
Of the following Create functions
NSCreateMapTable
NSCreateZone
NSCreateHashTable
NSCreateFileContentsPboardType
the first 3 you obviously own...but I'm not sure about the last one.
You're definitely correct that the result of
NSSearchPathForDirectoriesInDomains should not be released, but I'm
not sure the rules for functions are clear.
-- adam
On Sep 30, 2009, at 7:18 PM, Graham Cox wrote:
Yes, because it's not yours to release.
RTFMMGA:
http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmObjectOwnership.html#//apple_ref/doc/uid/2043-BEHDEDDB
--Graham
On 01/10/2009, at 12:07 PM, Anthony Smith wrote:
Does anybody know why releasing the NSArray obtained from
NSSearchPathForDirectoriesInDomain causes my iPhone app to crash?
Here's my code:
+ (NSString *)dataFilePath:(NSString *)filename {
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *directory = [paths objectAtIndex:0];
[paths release];
return [directory stringByAppendingPathComponent:filename];
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Accessor works intermittently
I cannot figure out why this does not work:
Phase *thisPhase = [phases objectAtIndex:i];
float testmode = [thisPhase mode];
float testmode2 = [[phases objectAtIndex:i] mode];
Following along with the code execution in the debugger, testmode gets
the correct value, but testmode2 gets an erroneous value. Note that
phases is an NSMutableArray of Phase* and mode is a trivial accessor
for a float stored inside Phase:
- (float) mode {return mode;}
I'm running XCode 3.1.2 in OSX 10.5.8.
-Dave
Dave Hirsch
Associate Professor
Department of Geology
Western Washington University
persistent email: dhir...@mac.com
http://www.davehirsch.com
voice: (360) 389-3583
aim: dhir...@mac.com
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error with movie player, iSightAudio.plugin
Hi,I wrote a small program today that uses MPMoviePlayerController, and when I run it and the movie starts playing, I get the following message on the console: 2009-09-30 17:44:43.683 PlayVideo[2128:4a03] Cannot find executable for CFBundle/CFPlugIn 0x7b49e70 /Library/Audio/Plug-Ins/HAL/iSightAudio.plugin (not loaded) 2009-09-30 17:44:43.683 PlayVideo[2128:4a03] Cannot find function pointer iSightAudioNewPlugIn for factory 9BE7661E-8AEF-11D7-8692-000A959F49B0 in CFBundle/CFPlugIn 0x7b49e70 /Library/Audio/Plug-Ins/HAL/iSightAudio.plugin (not loaded) This doesn't happen with another program I wrote today (the only two I've written since upgrading to 3.1SDK on SnowLeopard). I'm assuming it has something to do with the MediaPlayer framework? Has anyone else seen this error? It doesn't seem to affect the way the program works. I checked the archives and didn't see any previous discussion about this. Thanks, Elisabeth ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSDocumentController didCloseAllSelector
On Sep 30, 2009, at 7:15 PM, Graham Cox wrote: On 01/10/2009, at 12:06 PM, Adam R. Maxwell wrote: That should bring you to a helpful discussion titled Advice for Overriders of Methods that Follow the delegate:didSomethingSelector:contextInfo: Pattern. Wow. I thought it was byzantine even before I read this ;-) Ah, but once you've seen it, you can't forget it :). The most interesting bits of documentation are almost invariably the release notes (but they're also the hardest to find). smime.p7s Description: S/MIME cryptographic signature ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Accessor works intermittently
On Wed, Sep 30, 2009 at 6:41 PM, David Hirsch dhir...@mac.com wrote:
I cannot figure out why this does not work:
Phase *thisPhase = [phases objectAtIndex:i];
float testmode = [thisPhase mode];
float testmode2 = [[phases objectAtIndex:i] mode];
Following along with the code execution in the debugger, testmode gets the
correct value, but testmode2 gets an erroneous value. Note that phases is
an NSMutableArray of Phase* and mode is a trivial accessor for a float
stored inside Phase:
- (float) mode {return mode;}
Something else, probably in Cocoa, is defining a mode selector
before you do with a different return type. When ObjC can't determine
the exact signature of a selector (for example, because the instance
type is id) it uses the first one it finds. Searching through the
header files, I see at least two candidates it's probably choosing:
./AppKit.framework/Versions/C/Headers/NSColorPanel.h:- (NSColorPanelMode)mode;
./AppKit.framework/Versions/C/Headers/NSMatrix.h:- (NSMatrixMode)mode;
You can make it work with:
float testmode2 = [(Phase*)[phases objectAtIndex:i] mode];
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Re: NSDocumentController didCloseAllSelector
On Wed, Sep 30, 2009 at 9:39 PM, Adam R. Maxwell amaxw...@mac.com wrote: On Sep 30, 2009, at 7:15 PM, Graham Cox wrote: On 01/10/2009, at 12:06 PM, Adam R. Maxwell wrote: That should bring you to a helpful discussion titled Advice for Overriders of Methods that Follow the delegate:didSomethingSelector:contextInfo: Pattern. Wow. I thought it was byzantine even before I read this ;-) Ah, but once you've seen it, you can't forget it :). The most interesting bits of documentation are almost invariably the release notes (but they're also the hardest to find). NSInvocation is crazy overkill for this. It's extremely difficult to write, and as a bonus it'll be about two orders of magnitude slower than a regular message send too. A much simpler way is to do it like this (code not tested, etc.): void (*method)(NSDocumentController *, BOOL, void *) = (void*)[delegate methodForSelector: didAllCloseSelector]; method(delegate, didAllCloseSelector, self, YES, contextInfo); I really don't know why Apple recommends such a complicated way. (You can also call objc_msgSend() to do it all in one shot, but this saves you from having to worry about whether you need to use a special function for float returns, etc. You *do* have to worry about struct returns, though, and you should not use this technique in that case.) Mike ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSApplication's behavior
Still learning the Cocoa Window Architecture... Goal: I want to separate my MainWindow out of MainMenu.xib into its own .xib: MainView.xib. 1) I create a new Cocoa Application (not document-based) 2) I create a MainWindow.xib and MainWindowController.h/.m setting appropriately the relationship between them. MainWindowController inherits from NSWindowController and follows the proper procedures of fixing the MainWindow in the init* methods as mentioned in Apple docs. I also set the window and delegate My assumption (based on docs) is that my default or main NIB to be loaded is the one that has NSApplication set as the File's Owner. And this should remain as MainMenu, to ensure the responders for the Menu's are properly registered/set up. What is the recommended way to move MainWindow in another NIB? Shall I instantiate it from applicationDidFinishLaunching? Is there another way through interface builder, where one NIB refers to the other, etc? Thank you, Mark ___ 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
