release static pointers
Hi guys, I'm using sqlite3 library and a common technique is to cache the statement. In some examples I found the statement is set as static in the model which gets instantiated lazily. I'm wondering if and how the pointer to the statement will be released. In the code samples I saw there is no trace of the releasing (in this case, sqlite3_finalize(statement)). This is the example: http://icodeblog.com/wp-content/uploads/2008/08/9-todom.png I'm new to objective-c and sometimes I wonder if when to use static pointers or singletons. Thanks, chr ___ 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
Location of the standard Apple icons in IB
Hi list, i'm working on a 10.4+ app and i use some icon templates like NSPreferencesGeneral, NSUser, etc... The problem is that something like [toolbarItem setImage:[NSImage imageNamed:@NSPreferencesGeneral]] only works on 10.5+ My question is, does anyone know the location these icons on then system so i can take them and build them with my project instead of relying on the runtime based approach. I looked in System - CoreServices but there not all there. Thanks in advance, Florian. Looking for Web-to-Print Solutions? Visit our website : http://www.vit2print.com This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information and/or information protected by intellectual property rights. If you are not the intended recipient, please note that any review, dissemination, disclosure, alteration, printing, copying or transmission of this e-mail and/or any file transmitted with it, is strictly prohibited and may be unlawful. If you have received this e-mail by mistake, please immediately notify the sender and permanently delete the original as well as any copy of any e-mail and any printout thereof. We may monitor e-mail to and from our network. NSS nv Tieltstraat 167 8740 Pittem Belgium ___ 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: Location of the standard Apple icons in IB
You're right! Don't know why i didn't think about that myself... ;-) Txs. On 26 Jan 2009, at 11:37, Jean-Daniel Dupas wrote: Le 26 janv. 09 à 11:29, Florian Soenens a écrit : Hi list, i'm working on a 10.4+ app and i use some icon templates like NSPreferencesGeneral, NSUser, etc... The problem is that something like [toolbarItem setImage:[NSImage imageNamed:@NSPreferencesGeneral]] only works on 10.5+ My question is, does anyone know the location these icons on then system so i can take them and build them with my project instead of relying on the runtime based approach. I looked in System - CoreServices but there not all there. Thanks in advance, Florian. Looking for Web-to-Print Solutions? Visit our website : http://www.vit2print.com What about retreiving them on 10.5 using NSImage functions ? [[[NSImage imageNamed:@NSPreferencesGeneral] TIFFRepresentationUsingCompression:NSTIFFCompressionLZW] writeToFile:@NSPreferencesGeneral.tiff atomically:NO]; Looking for Web-to-Print Solutions? Visit our website : http://www.vit2print.com This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information and/or information protected by intellectual property rights. If you are not the intended recipient, please note that any review, dissemination, disclosure, alteration, printing, copying or transmission of this e-mail and/or any file transmitted with it, is strictly prohibited and may be unlawful. If you have received this e-mail by mistake, please immediately notify the sender and permanently delete the original as well as any copy of any e-mail and any printout thereof. We may monitor e-mail to and from our network. NSS nv Tieltstraat 167 8740 Pittem Belgium ___ 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: Getting iPod icon, was Getting the network Machine Icon
Opps! I sent this by mistake, I already found the solution this weekend, I just changed the BitmapInfo to kCGImageAlphaPremulitipledFirst and all is well! Thanks a lot for your help, it's almost all working now. All the Best Dave Hi Jean, Thanks, I added the code you suggested and it basically works! I have one small problem left in that the colors are shifted, I think the routine I am returning the buffer to expects ARGB or BGRA and I am returning the opposite! Typical! Is there an easy way to get the pixels in the reverse order or do I need to swap the bytes myself? Thanks in Advance All the Best Dave On 23 Jan 2009, at 19:27, Jean-Daniel Dupas wrote: The requirement of the function I am writing has now changed because I found a different way of doing it that requires much less changes to the rest of the application. Basically there is a framework of sorts that calls my function (GetIconImage), all I have to do is to render the Icon into a BitMap/PixMap and then return a pointer to it from my function, e.g. the function that calls my function need to return a buffer that is width * height * 4 in size that contains the pixels and everything else will be taken care of! So, I if change the bit that computes the Row Bytes value so it is (width * 4) and change the malloc to malloc(width * height * 4) then just return myImageBufferPtr, this should be ok? Yes. You should release the CGContext too. If you provide a buffer when you create it (this is what you do), your are responsible to free it, and so, releasing the bitmap context will not affect it. Also, how to I free the memory allocated by myBitMapContextRef, myIconRef and myIconFamily Icon? I can't seem to find dispose/ release functions for these objects. All CG type are CoreFoundation objects. So you can use CFRelease to free the bitmap context. There is also a CGContextRelease function but the doc says that this function is equivalent to CFRelease, except that it does not cause an error if the context parameter is NULL. For the IconRef, the function is ReleaseIconRef(). And the icon family is an handle, and should be freed using DisposeHandl ___ 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/dave% 40looktowindward.com This email sent to d...@looktowindward.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
How to catch and log EXC_BAD_ACCESS?
For the beta-testing purposes, I'd like my app to handle the situation when the EXC_BAD_ACCESS exception occurs, and treat it gracefully - i.e. send a crash report and perhaps terminate. Currently, the app just hangs and needs the user to send Force Quit to terminate the app. I tried to wrap the problematic code with @try/@catch, but EXC_BAD_ACCESS seems to be a special kind of exception that is not trapped this way. Any advice is welcome! ___ 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 catch and log EXC_BAD_ACCESS?
On 26 Jan 2009, at 11:33, Oleg Krupnov wrote: For the beta-testing purposes, I'd like my app to handle the situation when the EXC_BAD_ACCESS exception occurs, and treat it gracefully - i.e. send a crash report and perhaps terminate. Currently, the app just hangs and needs the user to send Force Quit to terminate the app. I tried to wrap the problematic code with @try/@catch, but EXC_BAD_ACCESS seems to be a special kind of exception that is not trapped this way. EXC_BAD_ACCESS is not an application exception it is a Unix signal. Signals are a BIG topic. You can handle them in Cocoa. See this recent post. http://www.cocoabuilder.com/archive/message/cocoa/2008/12/17/225634 Whether this is a wise course of action might be another matter. Any advice is welcome! ___ 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/jonathan%40mugginsoft.com This email sent to jonat...@mugginsoft.com Jonathan Mitchell Central Conscious Unit 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: Creating a managed object without adding it to the context?
My problem is that when I add directly to the managed object context, the item is not getting selected automatically in the array controller (by the way, I see the selection visually by means of the table view bound to the array controller) even if I have checked the select on insert checkbox on the array controller in Interface Builder. IIRC that happens when you insert the object directly into the managed object context without going through the array controller. I.e. by using NSManagedObject's -initWithEntity:insertIntoManagedObjectContext: instead of NSArrayController's -addObject: This is actually what I'm most interested about, and the reason why I asked my question in the first place. Can someone else here confirm this? Let me repeat what is to be confirmed: When a new managed object is added to the managed object context (NB: Directly going through to the context and NOT using arrayController's add: methods), is it true that the arrayController will not select that particular object? If this is true, it seems strange to me, as this new object will get propagated to the arrayController and hence the arrayController should detect that it is a newly added object and therefore select it automatically, right? Remember that throughout this discussion we assume that the select on insert checkbox is checked for the arrayController. _ More than messages–check out the rest of the Windows Live™. http://www.microsoft.com/windows/windowslive/___ 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
Full screen on a display other than the main display
I tried making my application work in full screen with the method I've
attached below. This however only works correctly on the main display -- if
I try triggering this when the main window is any other screen I get just
black on that screen. What am I doing wrong?
- (IBAction) toggleFullScreenMode:(id) sender {
if (fullScreenMainWindow != nil) {
[self goAwayFromFullScreenMode: self];
return;
}
mainWindowBeforeGoingFullScreen = [[NSApplication sharedApplication]
mainWindow];
mainWindowBeforeGoingFullScreenRect =
mainWindowBeforeGoingFullScreen.frame;
mainWindowBeforeGoingFullScreenView =
mainWindowBeforeGoingFullScreen.contentView;
// Capture the screen that contains the window
displayID = [[[mainWindowBeforeGoingFullScreen.screen deviceDescription]
objectForKey:@NSScreenNumber] intValue];
if (CGDisplayCapture(displayID) != kCGErrorSuccess) {
NSLog(@WARNING! could not capture the display!);
// Note: you'll probably want to display a proper error dialog here
}
// Get the shielding window level
int windowLevel = CGShieldingWindowLevel();
// Get the screen rect of our main display
NSRect screenRect = mainWindowBeforeGoingFullScreen.screen.frame;
// Put up a new window
fullScreenMainWindow = [[NSWindow alloc] initWithContentRect: screenRect
styleMask:
NSBorderlessWindowMask
backing:
NSBackingStoreBuffered
defer: NO
screen:
mainWindowBeforeGoingFullScreen.screen];
[fullScreenMainWindow setLevel:windowLevel];
[fullScreenMainWindow makeKeyAndOrderFront:nil];
[mainWindowBeforeGoingFullScreen setFrame:screenRect display:YES];
[fullScreenMainWindow
setContentView:mainWindowBeforeGoingFullScreen.contentView];
}
___
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: Opening Symbolic Links
On 26 jan 2009, at 07:07, Gerriet M. Denkmann wrote: Am I doing something wrong? nop Does anybody seen this strange behaviour as well, or is it only me? Not only you. Wii have the same behaviour. Even when you try to open it in textedit it doesn't work. The links doesn't know what the org. doc's are. But when it was still working well I dont remember. A college should have filed a bug, but not sure if he really did. Maybe once more! RvA ___ 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
Configuring a Port-based Input Source -- Part 2
[continuation -- part 2]
Here is where my mainCtrl parm comes into play, because instead of
Apple's:
Within my
do
{
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode
beforeDate:[NSDate distantFuture]];
} while (![mainCtrl shouldExit]);
where my – (BOOL) shouldExit is in my main Thread.
Am I still on the right track? I definitely am off-base somewhere
because there is no evidence that mainCtrl's –shouldExit is even
called? Anyway, I'm almost finished, so let me continue.
Further, I just use:[self sendCheckInMessage:distantPort];
and within Apple's – (void) sendCheckinMessage :(NSPort*)bgndPort,
they have:
NSPort* myPort = [NSMachPort port];
Apple states: Create and configure the worker thread port. Is
myPort a local main Port for the worker thread port to send its
message back to? And if so, why is this required because doesn't
Cocoa know about the main port that it presumably created when it
called:
NSApplicationMain(argc, (const char **)argv);
at the very start within main.m?
One last basic question -- where exactly should my –
doSomeSuperLongCalculation method go? Should it be sandwiched somehow
within –shouldExit,? Is it inserted within the main thread's –
handlePortMessage, or is it placed within the above do-while loop?
John Love
Touch the Future! Teach!
P.S. Hope I don't get bumped again for excessive length.
___
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: Accessing private members of another object of the same class
First of all: thank you. You solved my problem.
There's no real way to enforce privateness, either in Objective-C
or C++.
Why not in C++?
Yes, these do the trick.
But another-mineAlone will.
-(int)yoursTooButWithAnother: (PrivateClass *)another {
return another-mineAlone % 3;
}
Also, be careful to keep two things separate in your mind.
-- The *variable* mineAlone, which can be referenced in the class's
methods as 'mineAlone' or 'self-mineAlone'.
-- The *property* mineAlone, which can be referenced in the class's
methods as '[self mineAlone]' or 'self.mineAlone'.
They only accidentally have the same name.
Yes.
Cheers Horst
___
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: release static pointers
hi Christian,
On Jan 26, 2009, at 11:25 AM, Christian Giordano wrote:
I'm wondering if and how
the pointer to the statement will be released. In the code samples I
saw there is no trace of the releasing (in this case,
sqlite3_finalize(statement)).
This is the example:
http://icodeblog.com/wp-content/uploads/2008/08/9-todom.png
It looks like you started in wrong place. The sample code is certainly
based on official Apple's sqlite integration sample:
http://developer.apple.com/iphone/library/samplecode/SQLiteBooks/
(go there, registration for online type of ADC account is free),
which is far more better place to start I think. To finalize
statements there is dedicated class method defined in entity class
that gets called when application is to be closed (in blog sample that
could be implemented as:
@interface ...
+(void)finalizeStatements;
@implementation
+(void)finalizeStatements
{
if(stmt){
sqlite3_finalize(stmt);
stmt = NULL;
};
}
called as:
[Todo finalizeStatements]
from one of controllers.
regards,
Peter
___
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: Accessing private members of another object of the same class
On 26 Jan 2009, at 14:02, Horst Jäger wrote:
First of all: thank you. You solved my problem.
There's no real way to enforce privateness, either in Objective-C
or C++.
Why not in C++?
#define private public
class Foo
{
private:
int privateVar;
} ;
___
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: Accessing private members of another object of the same class
Le 26 janv. 09 à 15:02, Horst Jäger a écrit : First of all: thank you. You solved my problem. There's no real way to enforce privateness, either in Objective-C or C++. Why not in C++? And why not in Obj-C ? The new runtime (64 bits, non-fragile) declare a symbol for each ivar. Private ivars are not exported by default, so you cannot access them without running into a linker error. That said, if you know the layout of a specific object (either in C++ and Obj-C) you can cast it into a blob and access the memory directly. That's maybe why he said you cannot enforce privateness. ___ 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: release static pointers
It looked like a good tutorial :)
Thanks, I'll check better the Apple way.
Cheers, chr
On Mon, Jan 26, 2009 at 1:59 PM, Peter Blazejewicz
peter.blazejew...@gmail.com wrote:
hi Christian,
On Jan 26, 2009, at 11:25 AM, Christian Giordano wrote:
I'm wondering if and how
the pointer to the statement will be released. In the code samples I
saw there is no trace of the releasing (in this case,
sqlite3_finalize(statement)).
This is the example:
http://icodeblog.com/wp-content/uploads/2008/08/9-todom.png
It looks like you started in wrong place. The sample code is certainly based
on official Apple's sqlite integration sample:
http://developer.apple.com/iphone/library/samplecode/SQLiteBooks/
(go there, registration for online type of ADC account is free),
which is far more better place to start I think. To finalize statements
there is dedicated class method defined in entity class that gets called
when application is to be closed (in blog sample that could be implemented
as:
@interface ...
+(void)finalizeStatements;
@implementation
+(void)finalizeStatements
{
if(stmt){
sqlite3_finalize(stmt);
stmt = NULL;
};
}
called as:
[Todo finalizeStatements]
from one of controllers.
regards,
Peter
___
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
Configuring a Port-based Input Source -- Part 1
I have this request for help in two parts, because I've been bumped due to length: Reference: Configuring a Port-Based Input Source of http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/RunLoopManagement/chapter_6_section_5.html#/ /apple_ref/doc/uid/1057i-CH16-SW7 My challenge is to try to understand this part of Chapter 5 of Apple's multithreading.pdf. My single question is Is my understanding correct? .. and the best way I can approach this is to go almost line- by-line of the code presented. First and foremost, I understand that a NSMachPort is a two way port: for the main thread, the remote port is the background port and for the background Thread, the remote port is the main port. In short, the same port is used for two-way communication. I have placed all the methods listed in this section of Ch. 5 are in a separate controller, ThreadController, from here on called TC. So, when I call any of these methods from the main thread, I use: [iboTC somePortMethod]; My principal variation to Apple's code involves calling –launchThread with a passed parm, i.e.: [iboTC launchThread:self]; Within my TC's – (void) launchThread:(id)theMainCtrl, I assign the passed parm to my TC instance variable = mainCtrl (for use later, as you will see). So, going almost line-by-line: Within Apple's –launchThread, they have: NSPort* myPort = [NSMachPort port]; This appears to be a new background Port. Is it, or is it a new local main Port? I think it is a background Port because Apple continues by calling – detachNewThreadSelector with an object equal to this Port. Within the selector passed to –detachNewThreadSelecctor: +(void)LaunchThreadWithPort:(id)inData (actually, I convert it to an instance method - don't know why Apple uses a class method here ?) the passed inData is immediately converted: NSPort* distantPort = (NSPort*)inData; Where their distantPort, or remote Port, is the remote Port for the main Thread, thus making the passed Port the background Port. Am I good so far and if not, why not? [continued in Part II] ___ 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
Binding Buttons and Popup Menus to NSDictionary made from a prefs plist?
Hi Everyone, I am trying to wrap my head around using a plist. Everything that I have seen on the mailing list so far, involves using an NSTableView to work with NSDictionaries. Here is what I have set up. I have several NSButtons and pre-populated NSPopup Buttons, where the index values or states are stored as NSNumbers inside a plist file. Fairly easy to figure out. You just specify a key, and you get an NSNumber Object. I am now trying use several of these plists. I have a list of projects in an NSTextColum, each with its own plist. I want to select one of the projects in the tableview, and have the controls changed to reflect the states from the appropriate plist. Again, in theory, plists should work well, here. So far, I have an NSArrayController working well, with a list of projects/plists. However, I can't seem to get the bindings to work for the various controls. I am attempting to bind the buttons and popup menus to *something that that can drive them. I not only want the controls to be updated with each project that is selected, but have the NSDictionary that is holding the plist, to be updated when the user changes the controls. You would think that this is straight forward. Here is what I have tried: NSDictionaryController. I have an observeValueForKeyPath set up, to watch my NSArrayController, with a list of projects. Once I have a project selected, it then binds an NSMutableDictionary to the NSDictionaryController Something like this: [seqPrefsCtlr bind:NSContentDictionaryBinding toObject:self withKeyPath:@prefsDict options:nil]; No problem there.. But then I can't seem to figure out what to bind the assorted NSButtons and NSPopup menus to. My other idea was to subclass NSArrayController, and override selectedObjects. With this, I wanted to bind each control to the NSMutableDictionary in File's owner (somehow), and have each control observe a key in the dictionary. This seems to be a one way street, however. I can get the keys in the dictionary to initially set the buttons/popups, but nothing else. Is there any sort of example that shows how an NSDictionary can drive a pile of controls with bindings? Or should I just brute-force this, and write other code? bob. Robert Monaghan Glue Tools LLC 629 State St. Suite 220 Santa Barbara, CA, 93101 United States tel: +1 805 456 7997 fax: +1 805 456 7998 www.gluetools.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: Accessing private members of another object of the same class
On Jan 26, 2009, at 8:14 AM, Jean-Daniel Dupas wrote: There's no real way to enforce privateness, either in Objective-C or C++. Why not in C++? And why not in Obj-C ? The new runtime (64 bits, non-fragile) declare a symbol for each ivar. Private ivars are not exported by default, so you cannot access them without running into a linker error. But you can use valueForKey:. That said, if you know the layout of a specific object (either in C+ + and Obj-C) you can cast it into a blob and access the memory directly. That's maybe why he said you cannot enforce privateness. The layout for 64 bit new runtime objects is not defined (and due to the non-fragile part, isn't even fixed at compile or link time, so you'd have to munge your way through undocumented data structures - better off just using KVC). Glenn Andreas gandr...@gandreas.com http://www.gandreas.com/ wicked fun! quadrium | prime : build, mutate, evolve, animate : the next generation of fractal art ___ 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: Targeting Tiger
Hi John, Also worth noting: you can build on Leopard with Xcode 3.x, using the 10.4 SDK, and your app might run fine on a Leopard box. BUT, you still need to test on a native Tiger platform because the systems dylibs are different (and yes, the 10.4 API behaves differently between Tiger and Leopard). Even though you link against the 10.4 SDK, you still run against the system dylibs shipped on the target computer. Which is why you need to run on a native Tiger system for complete testing. Around here we figure that we need to keep a Tiger computer around for as long as we support Tiger. Another note: be sure that you target 10.4 in your build environment. In particular, be sure that -mmacos-version-min=10.4 and -isysroot /Developer/SDKs/MacOSX10.4u.sdk are set as gcc build flags in case you are using makefiles. This will ensure that the generic (G3-friendly) ppc arch is built, and not the later ppc7400 arch (not supported on Tiger and some early Leopards). - Dave.S On Sun, Jan 25, 2009 at 1:01 PM, John Joyce dangerwillrobinsondan...@gmail.com wrote: On Jan 24, 2009, at 8:31 PM, cocoa-dev-requ...@lists.apple.com wrote: Not sure what you mean by capable of running tiger. If you have a machine capable of running Leopard, it should be able to run tiger. Not true. In general, any Mac requires the latest OS available at the time it was released. So machines released after the release of Leopard usually require Leopard. Not in general. No Mac is supported to run any version of the Mac OS earlier than the version it officially shipped with. If your Mac officially shipped with 10.5.4 it is unsupported to run 10.5.3 or earlier. Period. If you do not know, and you may not, call AppleCare, provide the serial number of the Mac, they can tell you precisely which version it originally shipped with and that will be the earliest version you can reliably run on that computer. Although in some cases you may successfully boot and run some earlier version, it is unsupported, meaning it would not be a good test environment. Any Mac that runs Tiger well, will be more than adequate for most Tiger development. (exceptions would be targeting higher or lower end hardware) ___ 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/dspringer%40google.com This email sent to dsprin...@google.com -- http://go/OnlyCheckEmailTwiceADay - join the movement ___ 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: Accessing private members of another object of the same class
On Jan 26, 2009, at 7:24 AM, glenn andreas wrote: The layout for 64 bit new runtime objects is not defined (and due to the non-fragile part, isn't even fixed at compile or link time, so you'd have to munge your way through undocumented data structures - better off just using KVC). Or the API OBJC_EXPORT Ivar class_getInstanceVariable(Class cls, const char *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: Knowing when a NSArrayController is ready
On Jan 26, 2009, at 10:58 AM, Sean McBride wrote: On 1/24/09 11:05 PM, jonat...@mugginsoft.com said: I changed my store type to SQLite and noted an immediate improvement in load times. Your app isn't garbage collected is it? Because if so, note that the SQL store is incompatible with GC apps. :( What's this supposed incompatibility? According to everything I've read CoreData is fully GC compliant. I would assume that includes all of the store types. Ashley [1]: http://developer.apple.com/releasenotes/Cocoa/CoreDataReleaseNotes/index.html#/ /apple_ref/doc/uid/TP40006503-SW5 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: How to catch and log EXC_BAD_ACCESS?
Currently, the app just hangs and needs the user to send Force Quit to terminate the app. You sure about that? It can take a while to prepare the crash report, and during that time your app is certainly non-responsive. But that signal causes the system to terminate your application, and I have ***NEVER*** seen that termination fail, not under any circumstances. In fact, if the system can't terminate the app after EXC_BAD_ACCESS, there would be no reason to expect the user to be able to force quit it either... -- Scott Ribe scott_r...@killerbytes.com http://www.killerbytes.com/ (303) 722-0567 voice ___ 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
autorelease problem
Hi,
My program is crashing when releasing the NSAutoreleasePool.
I have in my code:
- (void)MyFunction
{
while (count)
{
NSAutoreleasePool *innerloop = [[NSAutoreleasePool alloc] init];
HDIR *dir = [someArray objectAtIndex:count];
NSString *fileNameNew = [self suggestedRepeatFileName:[dir fileName]
inDir:someDir];
[dir setFileName:fileNameNew];
[innerloop release];//crashing here
count--;
}
}
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:(HDIR
*)dir
{
// some code here
NSString *fileNameReturned = [NSString stringWithFormat:@%@,
someString];
return fileNameReturned;
}
Is there any problem with the code here?
Please help.
Wishes,
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: How to catch and log EXC_BAD_ACCESS?
On Mon, Jan 26, 2009 at 7:16 AM, jonat...@mugginsoft.com jonat...@mugginsoft.com wrote: EXC_BAD_ACCESS is not an application exception it is a Unix signal. Signals are a BIG topic. EXC_BAD_ACCESS is not a UNIX signal, it is a Mach exception. In response to this exception, the UNIX layer will send your process SIGBUS. --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: Knowing when a NSArrayController is ready
On 1/26/09 11:06 AM, Ashley Clark said: Your app isn't garbage collected is it? Because if so, note that the SQL store is incompatible with GC apps. :( What's this supposed incompatibility? According to everything I've read CoreData is fully GC compliant. I would assume that includes all of the store types. You assume incorrectly: http://www.cocoabuilder.com/archive/message/cocoa/2008/2/28/200078 -- 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: autorelease problem
On 26 Jan 2009, at 18:12, Nick Rogers wrote:
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:
(HDIR *)dir
{
// some code here
NSString *fileNameReturned = [NSString stringWithFormat:@%@,
someString];
return fileNameReturned;
}
Is there any problem with the code here?
Hard to tell without knowing where someDir or someString came from, or
what -[HDIR setFileName] is up to.
Does it crash the first time though the loop or later?
Matt
___
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: Knowing when a NSArrayController is ready
On Jan 26, 2009, at 12:18 PM, Sean McBride wrote: You assume incorrectly: http://www.cocoabuilder.com/archive/message/cocoa/2008/2/28/200078 That's only if the program is using the NSPersistentDocument API. I've been using a CoreData sqlite app that doesn't use NSPersistentDocument and uses GC, and it works just fine. Nick Zitzmann http://www.chronosnet.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: autorelease problem
hi,
thanks for the reply.
someString in the method suggestedRepeat... is an NSMutableString
allocated and initialized within that method.
-[HDIR setFileName] is as follows:
- (void)setFileName:(NSString *)name
{
name = [name copy];
[fileName release];
fileName = name;
}
Also the [innerloop release]; is crashing the first time through the
loop.
Regards,
Nick
On 26-Jan-09, at 10:53 PM, Matt Gough wrote:
On 26 Jan 2009, at 18:12, Nick Rogers wrote:
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:
(HDIR *)dir
{
// some code here
NSString *fileNameReturned = [NSString stringWithFormat:@%@,
someString];
return fileNameReturned;
}
Is there any problem with the code here?
Hard to tell without knowing where someDir or someString came from,
or what -[HDIR setFileName] is up to.
Does it crash the first time though the loop or later?
Matt
___
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: autorelease problem
On Mon, Jan 26, 2009 at 9:40 AM, Nick Rogers roger...@mac.com wrote:
hi,
thanks for the reply.
someString in the method suggestedRepeat... is an NSMutableString
allocated and initialized within that method.
How is it allocated? Please show that code. What about someDir?
- (NSString*)suggestedRepeatFileName:(NSString *)fileName inDir:(HDIR *)dir
{
// some code here
Please show the code.
- (void)setFileName:(NSString *)name
{
name = [name copy];
[fileName release];
fileName = name;
}
Looks OK.
Try using NSZombie since it sounds like you are over releasing something.
-Shawn
___
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
NSTextField line breaking
In a nib file I can set line breaking mode of an NSTextField (e.g., clip, truncate front, middle, end, etc.). But, I cannot find and way to make that setting in a programmatically created NSTextField. I looked through NSTextField, NSTextFieldCell, and NSControl. John Nairn http://www.geditcom.com Genealogy Software for the Mac ___ 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: NSTextField line breaking
In a nib file I can set line breaking mode of an NSTextField (e.g., clip, truncate front, middle, end, etc.). But, I cannot find and way to make that setting in a programmatically created NSTextField. I looked through NSTextField, NSTextFieldCell, and NSControl. I just found it in NSCell methods as setLineBreakMode: John Nairn http://www.geditcom.com Genealogy Software for the Mac ___ 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: NSTextField line breaking
Hey John - Here are the methods you're looking for: - (void)setWraps:(BOOL)flag; - (void)setScrollable:(BOOL)flag; - (void)setScrollable:(BOOL)flag; They're from NSCell. Good Luck - Jon Hess On Jan 26, 2009, at 9:53 AM, John Nairn wrote: In a nib file I can set line breaking mode of an NSTextField (e.g., clip, truncate front, middle, end, etc.). But, I cannot find and way to make that setting in a programmatically created NSTextField. I looked through NSTextField, NSTextFieldCell, and NSControl. John Nairn http://www.geditcom.com Genealogy Software for the Mac ___ 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/jhess%40apple.com This email sent to jh...@apple.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: Knowing when a NSArrayController is ready
On 1/26/09 10:29 AM, Nick Zitzmann said: http://www.cocoabuilder.com/archive/message/cocoa/2008/2/28/200078 That's only if the program is using the NSPersistentDocument API. I've been using a CoreData sqlite app that doesn't use NSPersistentDocument and uses GC, and it works just fine. True that the OP did not mention if he is using NSPersistentDocument, but I think it more likely than not. -- 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: Creating a managed object without adding it to the context?
On 1/26/09 12:21 PM, Ulai Beekam said: IIRC that happens when you insert the object directly into the managed object context without going through the array controller. I.e. by using NSManagedObject's -initWithEntity:insertIntoManagedObjectContext: instead of NSArrayController's -addObject: This is actually what I'm most interested about, and the reason why I asked my question in the first place. Can someone else here confirm this? Let me repeat what is to be confirmed: When a new managed object is added to the managed object context (NB: Directly going through to the context and NOT using arrayController's add: methods), is it true that the arrayController will not select that particular object? If this is true, it seems strange to me, as this new object will get propagated to the arrayController and hence the arrayController should detect that it is a newly added object and therefore select it automatically, right? Remember that throughout this discussion we assume that the select on insert checkbox is checked for the arrayController. I know what you're talking about. You want to create a new object, you want it to appear in the table, you want it to be selected, and you also need to set some attributes/relationships that you cannot in awakeFromInsert. The problem is that NSArrayController's -addObject: does not return to you the pointer to the new managedobject, and so you cannot customise it. OTOH, if you use -initWithEntity:insertIntoManagedObjectContext:, then it won't be selected in the arraycontroller/table. I have been looking for the best solution for some time now. Here's something I read recently on the topic: http://boredzo.org/blog/archives/2008-11-26/how-to-work-with-a-bound-to- array -- 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
get the drawing text height
I'm drawing a string to screen and I want to get the height if I specify a specific width. I'm drawing the string by using the NSString drawInRect: withAttributes:. I do not see how I can get the height after the text has wrapped. I have looked at NSString sizeWithAttributes, but there does not appear to be away to set the width so I can compute the height the text will take up. Any ideas? thanks -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: Core Data performance [Re: Knowing when a NSArrayController is ready]
On 25 Jan 2009, at 21:30, Ben Trumbull wrote: The results for a default fetch on a data set of 1500 very simple objects are: XML - usesLazyFetching = NO 38.00 sec load XML - usesLazyFetching = YES 4.78 sec load SQLite - usesLazyFetching = NO 35.25 sec load SQLite - usesLazyFetching = YES 2.07 sec load These numbers are astronomically wrong. On a modern intel machine, those numbers are off by between three and four orders of magnitude. A 500Mhz ppc G4 with 256MB RAM can fetch 10,000 rows over 20x faster than that. Thanks for posting a reply, It put me on the right track. I think the numbers show that it is trivial to get your Core Data configuration astronomically wrong, especially if you are using bindings. Timings are Cro-magnon. Why ? Put Shark in Time Sample (All Threads State). You'll get close to wall clock time with a sampling accuracy of microseconds. 36000 years later... Instruments reports: 1500 item data set fetch time .028s. So it's not the fetching that takes time! My simple timings included a LOT of KVO notifications, not just the raw fetch. Or just use the user default -com.apple.CoreData.SQLDebug 1 and we'll log all the SQL, plus annotations for timings of fetching. It even comes in color -com.apple.CoreData.SyntaxColoredLogging 1 Everyone needs to have this on. What does Instruments say ? Select the Core Data template in the new document window. That will configure all the most interesting Core Data instruments together. Typically, with the SQLite store the most common error is failing to use prefetching when appropriate and faulting in lots of relationships. My model is very simple with only a single to-many relationship. With usesLazyFetching = NO things go haywire. I get 1500 faults each of which throws up a storm of KVO calls. The docs do state (Core Data Guide - Faults and KVO Notifications) that KVO notifications do occur as faults are realised, even if the faulted relationship is already in the moc (is this last assumption correct?) I have a few bindings attached to the array controller which probably accounts for the storm. usesLazyFetching = YES seems to batch up the faulting so that the notification storm doesn't get too out of hand. However the best solution, in this simple case, is just to use [request setReturnsObjectsAsFaults:NO]. The XML store takes a long time to parse and add to the coordinator, but doesn't have that problem because it caches everything in memory. So the fact you've managed to make the two perform about the same implies something else is going on. I am using NSPersistentDocument + GC therefore it would seem that I have to revert to XML as per http://www.cocoabuilder.com/archive/message/cocoa/2008/2/28/200078 What are you doing in -awakeFromFetch for example ? What kind of machine were these numbers taken on, and did you do so after a fresh restart with no other apps running ? -awakeFromFetch extracts strings reps of an RTFD data binary and NSDate - so it does contribute to the load time. Do you get the same performance without putting the objects in the array controller ? Just set up the stack and do the fetch and toss the results. Misconfigured array controllers can sometimes generate notification storms if you add observers that make changes while receiving notifications from the controller that something is changing. The com.apple.CoreData.SQLDebug user default above is handy for that as what should be one or two fetches with a half page of log will instead by a fire-hose of logging that makes you want to quit Terminal. - Ben Jonathan Mitchell Central Conscious Unit 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: get the drawing text height
On Jan 26, 2009, at 11:45 AM, David Alter wrote: I'm drawing a string to screen and I want to get the height if I specify a specific width. I'm drawing the string by using the NSString drawInRect: withAttributes:. I do not see how I can get the height after the text has wrapped. I have looked at NSString sizeWithAttributes, but there does not appear to be away to set the width so I can compute the height the text will take up. Any ideas? http://developer.apple.com/documentation/Cocoa/Conceptual/TextLayout/Tasks/StringHeight.html#//apple_ref/doc/uid/20001809 Nick Zitzmann http://www.chronosnet.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
Safari-like tabs in my own app?
Where can I get Safari-like tabs in my own app? Actually, drag and drop is not necessary for me, but I need tabs that merge themselves into the toolbar. For instance, judging from this image: http://www.xtorrentp2p.com/1.png does he use some known tab implementation? Let's just say I want tabs just like these: ones that merge to the toolbar, support small icons in them, but are not draggable. Where could I get something like this? Someone has some code I can use or will I need to do this myself? In case I need to do this myself, what way can I use to merge a view to the toolbar? Thanks, U _ Drag n’ drop—Get easy photo sharing with Windows Live™ Photos. http://www.microsoft.com/windows/windowslive/photos.aspx___ 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: Accessing private members of another object of the same class
Why not in C++? Same as Objective-C, another instance of the same class can access them (as can static methods of the class)... -- Scott Ribe scott_r...@killerbytes.com http://www.killerbytes.com/ (303) 722-0567 voice ___ 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
Adding rows in NSPredicateEditor
Hi everyone, I'm wondering if there is a way I can control which row template gets added when the user clicks the '+' button on an NSPredicateEditor. The template chosen seems to be random, but I want it to be a specific one for user convenience. Kind regards, Tom ___ 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
Managing user focus
Hello! Im porting an application to Leopard written in Qt - kinda onscreen keyboard. The thing is I need to make MainWindow of the application not accepting keyboard focus (user focus) when user clicks on it choosing possible letters (keep it always inactivated). So when user has chosen the letter it could be pasted in other system-wide applications with keyboard focus. I have already tried these: in Qt setWindowFlags(Qt::Tool|Qt::FramelessWindowHint); setFocusPolicy(Qt::NoFocus); - the window stops getting focusEvents but still grabs keyboard focus since Qt 4.4 utilizes Carbon I've tried setting kHIWindowBitNoActivates or kWindowNoActivatesAttribute for this WindowRef Both variants didn't work. Are there any workarounds in Cocoa ? I can try Qt 4.5 beta if they make it based on Cocoa Afterwards when the window is off-focus I need to send the key to other application which currently has user focus. How can be that implemented (NSPasteboard ?) ? In linux version disabling focus made through Xorg calling XFree() for XAtom WM_TAKE_FOCUS. Can that be used on Mac (I have read it has X11 port)? Any help will be appreciated! TIA, Sergey ___ 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: Safari-like tabs in my own app?
Check out PSMTabBarControl over on googlecode: http://code.google.com/p/maccode/wiki/WhatIsMacCode Dave On Jan 26, 2009, at 12:50 PM, Ulai Beekam wrote: Where can I get Safari-like tabs in my own app? Actually, drag and drop is not necessary for me, but I need tabs that merge themselves into the toolbar. For instance, judging from this image: http://www.xtorrentp2p.com/1.png does he use some known tab implementation? Let's just say I want tabs just like these: ones that merge to the toolbar, support small icons in them, but are not draggable. Where could I get something like this? Someone has some code I can use or will I need to do this myself? In case I need to do this myself, what way can I use to merge a view to the toolbar? Thanks, U ___ 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: get the drawing text height
David Alter wrote: I'm drawing a string to screen and I want to get the height if I specify a specific width. I'm drawing the string by using the NSString drawInRect: withAttributes:. I do not see how I can get the height after the text has wrapped. I have looked at NSString sizeWithAttributes, but there does not appear to be away to set the width so I can compute the height the text will take up. Any ideas? Try this: NSRect mySize = NSMakeSize( myWidth, 0.0 ); NSRect bounds = [myString boundingRectWithSize: mySize options: NSStringDrawingUsesLineFragmentOrigin attributes: myAtts]; float theHeight = NSHeight( bounds ); (Typed into e-mail) -- James W. Walker, Innoventive Software LLC http://www.frameforge3d.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: Adding rows in NSPredicateEditor
On Jan 25, 2009, at 3:25 AM, Tom wrote: Hi everyone, I'm wondering if there is a way I can control which row template gets added when the user clicks the '+' button on an NSPredicateEditor. The template chosen seems to be random, but I want it to be a specific one for user convenience. Kind regards, Tom Hi Tom, Unfortunately there's no easy way to control this yet. Please file an enhancement request. Thanks! Note that the current algorithm is not random: it picks the first unused rule in a breadth-first search. -Peter ___ 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: Core Data performance [Re: Knowing when a NSArrayController is ready]
On Jan 26, 2009, at 11:47 AM, jonat...@mugginsoft.com wrote: Why ? Put Shark in Time Sample (All Threads State). You'll get close to wall clock time with a sampling accuracy of microseconds. 36000 years later... I'm not that old. For short events like launch time, I've found Shark to provide much better accuracy than a lot of alternatives, plus free samples as a bonus. Typically, with the SQLite store the most common error is failing to use prefetching when appropriate and faulting in lots of relationships. My model is very simple with only a single to-many relationship. With usesLazyFetching = NO things go haywire. I get 1500 faults each of which throws up a storm of KVO calls. Hrm. I suspect you have some custom observer code that's triggering yet more work. Or it may be your custom -awakeFromFetch The docs do state (Core Data Guide - Faults and KVO Notifications) that KVO notifications do occur as faults are realised, even if the faulted relationship is already in the moc (is this last assumption correct?) I'm not sure what you mean by that last part. But if you have a to- many relationship, and you need its contents at launch time, you definitely want to use prefetching. I have a few bindings attached to the array controller which probably accounts for the storm. usesLazyFetching = YES seems to batch up the faulting so that the notification storm doesn't get too out of hand. However the best solution, in this simple case, is just to use [request setReturnsObjectsAsFaults:NO]. You can use both. Plus, you'll probably want to prefetch the relationship or not use it at launch time. What are you doing in -awakeFromFetch for example ? What kind of machine were these numbers taken on, and did you do so after a fresh restart with no other apps running ? -awakeFromFetch extracts strings reps of an RTFD data binary and NSDate - so it does contribute to the load time. How are you setting the results for these string reps ? I assume upon transient attributes, yes ? If the array controller is bound to those transients, this may be what it is observing. You could also try using -setPrimitiveXYZ: instead of -setXYZ: during awakeFromFetch If you need these for launch time, have you considered making them persistent ? Unless the RTFD data changes frequently, you may be better off caching the extracted strings in the db. - 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
Setting data cell type for a specific row
Hi I have a table where I want a button field in the last row of a column to contain a different button cell than all the other rows. All rows before the last contain a delete button, but in the last row, I want to change that to an add button. I create the add button when my class in initialized so how would I get a reference to the last button cell and change it's to my saved button cell? Thanks for any help ___ 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
[MEET] Sydney (Australia) - CocoaHeads February 5th
Sydney CocoaHeads meets on the FIRST Thursday of each month and is meeting next Thursday, February 5th. We will be meeting at UTS Broadway, in room CB02.03.17 which means building 2, level 3, room 17 : Map: http://www.uts.edu.au/about/mapsdirections/bway.html If you get lost, I will try to be there a little early and you can call my mobile : 0438 700 647 Pending last minute changes to his travel schedule, André Pang is our confirmed speaker for February. Of Realmac software fame (Rapid Weaver and Little Snapper), André is a great speaker and has spoken at international conferences, corporate clients and special interest groups just like ours. André is knowledgeable on a wide range of Mac related programming topics so it's sure to be interesting for all. I have updated the calendar linked from the Google Groups page ( http://groups.google.com/group/sydney-cocoaheads ). The cocoaheads.org is not yet up to date while I wait for edit rights to the admin system. Please RSVP via the form linked below if you plan to attend CocoaHeads Sydney on February 5th, 2009. No problem if you end up not making it, but it's good to be able to plan for numbers etc. https://spreadsheets.google.com/viewform?key=pSro-pQGhJ38Fd8Z0bbzoLw Cheers, Mark. -- Mark Aufflick contact info at http://mark.aufflick.com/about/contact ___ 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: Setting data cell type for a specific row
On Mon, Jan 26, 2009 at 4:41 PM, kentoz...@comcast.net wrote: I have a table where I want a button field in the last row of a column to contain a different button cell than all the other rows. All rows before the last contain a delete button, but in the last row, I want to change that to an add button. I create the add button when my class in initialized so how would I get a reference to the last button cell and change it's to my saved button cell? You don't get a reference to a cell. You tell the table view (via a delegate method) what prototype cell to use for the requested col/row. See: -[NSTableView tableView:dataCellForTableColumn:row:] ... and ... Table View Programming Guide http://developer.apple.com/documentation/Cocoa/Conceptual/TableView/TableView.html -- 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: CALayer autoresizing behaviour
Joe, I don't see you setting the needDisplayOnBoundsChange property,
thus:
layer.needDisplayOnBoundsChange = YES;
The default value for this property is NO.
-Michael
--
We know as much about software quality problems as they knew about the
Black Plague in the 1600s. We've seen the victims' agonies and helped
burn the corpses. We don't know what causes it; we don't really know
if there is only one disease. We just suffer - and keep pouring our
sewage into our water supply.
-- Unknown
On Jan 21, 2009, at 5:10 AM, Joe Wildish wrote:
All,
I'm having trouble getting a CALayer to resize automatically to fill
its superlayer. I have the following code snippet:
layer = [CALayer layer];
layer.layoutManager = [CAConstraintLayoutManager layoutManager];
layer.autoresizingMask = kCALayerWidthSizable |
kCALayerHeightSizable;
object.frame = CGRectMake(0.0f, 0.0f, 100.0f, 100.0f);
[object addSublayer:layer];
NSLog(@object.frame=%@,\nlayer.frame=%@,
NSStringFromRect(NSRectFromCGRect(object.frame)),
NSStringFromRect(NSRectFromCGRect(layer.frame)));
(NB: object is an instance of a CALayer).
It was my understanding that with the options that I've used for the
autoresizing mask on layer, it should be resized to be the same
size as its super-layer. However, the output on the console
indicates otherwise:
2009-01-21 13:03:31.538 TheAppName[37894:10b] object.frame={{0, 0},
{100, 100}},
layer.frame={{0, 0}, {0, 0}}
I thought that it might be that the change was in a state of
animation at the point of the NSLog, but the actual visual output
I'd expect from my app also indicates that the resize hasn't occurred.
Is anyone able to point out what I'm doing wrong?
Many thanks,
-Joe
___
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/michaelacrawford%40mac.com
This email sent to michaelacrawf...@mac.com
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: Safari-like tabs in my own app?
Check out PSMTabBarControl over on googlecode: http://code.google.com/p/maccode/wiki/WhatIsMacCode Dave Hmm ok. I checked that out but the palette refused to appear in Interface Builder. I followed their directions and put PSMTabBarControl.palette folder into ~/Library/Palettes/ folder but no palettes appears in Inteface Builder even after restarting IB. Any ideas? Anyway, assuming if I want to make my own tab implementation, what mechanism do I use to merge my custom view into the toolbar, meaning that the bottom border of the toolbar disappears in areas where my custom view is directly below the toolbar (this may not necessarily be all the horizontal space due to source lists to the left etc.) Can a custom view affect its neighboring toolbar like that in some way? About PSMTabBarControl, anyone here has any experience with it? Does it merge in the toolbar like it should? And again about that Xtorrent image I posted earlier (http://www.xtorrentp2p.com/1.png), what do you reckon he uses for tabs? You think he's using PSMTabBarControl? _ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx___ 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: Core Data performance [Re: Knowing when a NSArrayController is ready]
On Jan 26, 2009, at 2:09 PM, jonat...@mugginsoft.com wrote: The docs do state (Core Data Guide - Faults and KVO Notifications) that KVO notifications do occur as faults are realised, even if the faulted relationship is already in the moc (is this last assumption correct?) I'm not sure what you mean by that last part. But if you have a to- many relationship, and you need its contents at launch time, you definitely want to use prefetching. What I mean is if a object has a to-many relationship (lots of children say faulting to one parent) but the faulted object has already been retrieved from the store and is in the moc, will the in memory resolution of that fault still trigger the KVO machinery? Or is my head full of noodles this evening. The answer is ... it depends. It can demonstrate the behavior you are concerned about. If you are fetching lots of children, and traversing their parent relationship, then you almost certainly will want to use prefetching (setRelationshipKeypathsForPrefetching) which will instruct the fetch request to resolve them all at once, with 1 additional I/O instead of resolving them lazily one at a time for each child and N additional I/ Os. If you need these for launch time, have you considered making them persistent ? Unless the RTFD data changes frequently, you may be better off caching the extracted strings in the db. I was wondering about this - especially as I am occasionally getting a curious EXC_BAD_ACCESS when rebuilding my NSAttributed string (but that's another post). To me appear that there are 3 ways to do this: 1. make the string rep after the fetch. 2. cache it in the db as you say. 3. use an NSValueTransformer in the binding. Also, don't underestimate the power of writing your own custom NSValueTransformer. The default one used by transformable attributes is NSKeyedArchiver, but while flexible and powerful, it can be a bit slow for very small items. The RTFD is more or less static so maybe caching it in the db is the simplest and has the same memory footprint as the build on fetch approach. Caching in the db will provide a much better in memory footprint, at the expense of more disk use, and potentially slower saves. - 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: Safari-like tabs in my own app?
On Jan 26, 2009, at 3:17 PM, Ulai Beekam wrote: Hmm ok. I checked that out but the palette refused to appear in Interface Builder. I followed their directions and put PSMTabBarControl.palette folder into ~/Library/Palettes/ folder but no palettes appears in Inteface Builder even after restarting IB. Any ideas? IB 3 later won't load IB 2 palettes. If you've got an IB palette, then you'll need to install Xcode 2.5 and run IB 2 to use it. Nick Zitzmann http://www.chronosnet.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: Properties and memory management with overrides.
On 1/18/09 4:29 PM, Ben Trumbull said: I mention this because (I'm embarrassed to admit) I never really thought about this till yesterday. I *think* other design decisions have made the atomic-ness irrelevant to any of the code I've written, but now I need to go back and check, especially where Core Data is involved. Core Data @dynamic properties are always nonatomic, irrespective of the property declaration. Core Data explicitly, intentionally, and states in the documentation, that you can have any property atomicity you want so long as it's nonatomic. Interesting. I never thought about this either, and was happy to see this come up. Ben, does this mean that the examples given here: http://developer.apple.com/documentation/Cocoa/Conceptual/CoreData/ Articles/cdAccessorMethods.html#//apple_ref/doc/uid/TP40002154-SW9 should be: @property(retain, nonatomic) NSString* firstName, lastName; instead of: @property(retain) NSString* firstName, lastName; (I understand that it makes no difference at runtime.) Likewise, shouldn't Xcode's 'Design Data Model Copy Obj-C 2.0 Method Declarations to Clipboard' feature specify nonatomic? Or am I confused again? :) Cheers, -- 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: Safari-like tabs in my own app?
Hi Ulai- All of the palette instructions are for Interface Builder 2 - the new IB3 has a different plug-in architecture. You will have to use the framework and a custom view in IB with the more modern tools (until someone crafts up an IB3 plugin :-) It does have the merge behavior you seek, depending on which tab style you assign to the control. There are a number of apps using the control to that effect. Adium is probably the most notable of the group, and it is their people who maintain the latest version at googlecode. I was the original author of the control, and you can see it in action (merged and all) in Pandora: http://www.positivespinmedia.com/shareware/Pandora/ It has since been much improved, and I'm a little out of touch with it - sorry I can't be of more help! John On Mon, 26 Jan 2009 22:17:21 +, Ulai Beekam ulaibee...@hotmail.com wrote: Check out PSMTabBarControl over on googlecode: http://code.google.com/p/maccode/wiki/WhatIsMacCode Dave Hmm ok. I checked that out but the palette refused to appear in Interface Builder. I followed their directions and put PSMTabBarControl.palette folder into ~/Library/Palettes/ folder but no palettes appears in Inteface Builder even after restarting IB. Any ideas? Anyway, assuming if I want to make my own tab implementation, what mechanism do I use to merge my custom view into the toolbar, meaning that the bottom border of the toolbar disappears in areas where my custom view is directly below the toolbar (this may not necessarily be all the horizontal space due to source lists to the left etc.) Can a custom view affect its neighboring toolbar like that in some way? About PSMTabBarControl, anyone here has any experience with it? Does it merge in the toolbar like it should? And again about that Xtorrent image I posted earlier (http://www.xtorrentp2p.com/1.png), what do you reckon he uses for tabs? You think he's using PSMTabBarControl? _ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx___ 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/john%40positivespinmedia.com This email sent to j...@positivespinmedia.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
A question about key equivalents for menu items
Hi all, Is there a nice way to get a Unicode string from a keyboard shortcut, that looks like the key equivalents in NSMenuItems, for rendering elsewhere in a GUI? Slava ___ 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-dev Digest, Vol 6, Issue 154
Greetings List, A month ago my main hard disk failed, and I lost some development files that were not backed up. Yes I know I am stupid. Unfortunately the disk is too damaged for any recovery. I have the latest version of the project I was working on, but it is in a compiled, releasable form. I would like to know if any of you are aware of a way to decompile a compiled ObjectiveC project, to recover source files. Even partial source would be a boon, I can't face re-doing the work. Thanks for any advice, 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
Re: A question about key equivalents for menu items
On Jan 26, 2009, at 2:57 PM, Slava Pestov wrote: Hi all, Is there a nice way to get a Unicode string from a keyboard shortcut, that looks like the key equivalents in NSMenuItems, for rendering elsewhere in a GUI? Slava Hey Slava, No such function, unfortunately. You can roll your own with the Unicode characters for the modifier keys (0x2303, 0x2325, 0x21E7, 0x2318 for control, option, shift, and command), though there's still some special cased glyphs, like space. This would be worth an enhancement request. -Peter PS: Keep up the good work on Factor, it's way cool! ___ 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: A question about key equivalents for menu items
On Jan 26, 2009, at 6:19 PM, Peter Ammon wrote: No such function, unfortunately. You can roll your own with the Unicode characters for the modifier keys (0x2303, 0x2325, 0x21E7, 0x2318 for control, option, shift, and command), though there's still some special cased glyphs, like space. This would be worth an enhancement request. ... although you might check out the ShortcutRecorder project on Google Code. It's a great example (and is free code) for this very thing. -- 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: Properties and memory management with overrides.
On Jan 26, 2009, at 14:45, Sean McBride wrote: On 1/18/09 4:29 PM, Ben Trumbull said: I mention this because (I'm embarrassed to admit) I never really thought about this till yesterday. I *think* other design decisions have made the atomic-ness irrelevant to any of the code I've written, but now I need to go back and check, especially where Core Data is involved. Core Data @dynamic properties are always nonatomic, irrespective of the property declaration. Core Data explicitly, intentionally, and states in the documentation, that you can have any property atomicity you want so long as it's nonatomic. Interesting. I never thought about this either, and was happy to see this come up. BTW, continuing the theme of things I didn't think about ... Although the rationale for non-atomicity runs under the general thread- safety discussion umbrella, there are actually two separate issues to consider. Generally, discussion about thread-safety of data like Core Data properties centers around the possibility of conflicting changes from multiple threads. Atomicity at the property level doesn't really help with that (as stated), and the problem must be solved at a higher level. However, even if only one thread can be changing the data, atomicity still matters. If the accessors aren't atomic, multiple read-only users of the data (in different threads) might get completely bogus results. This problem *can* be solved by atomicity at the property level, if you're prepared to take the potential performance hit from implementing it. I have to keep reminding myself that serializing changes through a single thread does *not* provide thread safety unless there is atomicity too. ___ 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: Setting data cell type for a specific row
I. Savant: You don't get a reference to a cell. You tell the table view (via a delegate method) what prototype cell to use for the requested col/row. See: -[NSTableView tableView:dataCellForTableColumn:row:] I took a look at that but it really seems to complicate things. Basically, I create the table and bind it to it's data source programatically. Once the table is bound and added to a view, the row count is known, so all I need to do is set that one cell. I got part way there by doing: // create an array controller NSArrayController *controller = [[NSArrayController alloc] init]; [controller bind: @contentArray toObject: model withKeyPath: @sites options: nil ]; // create the table and bind the columns [name bind: @value toObject: controller withKeyPath: @arrangedObjects.name options: nil ]; // get reference to the last cell in the desired column int rowIndex = [[controller arrangedObjects] count] - 1 ; id cell = [[table tableColumnWithIdentifier: @delete ] dataCellForRow: rowIndex]; [cell setImage: [PMImages addButtonOrange]]; [cell setAlternateImage: [PMImages addButtonWhite]]; [cell setAction: @selector (handleAdd:)]; Which works, only problem is, it changes the image and target for every cell in the column. Is there no other way to do this other than ditching my table creation code completely and using a delegate? As above two lines indicate, this kind of thing should be trivial to do directly, provided there is some way to set the data cell. ___ 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 and memory management with overrides.
On Jan 26, 2009, at 4:00 PM, Quincey Morris wrote: Although the rationale for non-atomicity runs under the general thread-safety discussion umbrella, there are actually two separate issues to consider. It helps to explicitly *not* think about atomicity under the same umbrella as thread safety for all the reasons you mention below. To restate: Atomicity has very little to do with thread-safety. All atomicity guarantees is that you'll get and/or set a consistent value, regardless of who or what is beating upon the method (there are even ways -- perverse and wrong ways -- of writing nonatomic code that gives the wrong value in a single thread). What atomicity does *not* guarantee is that you'll get/set the right value. Generally, discussion about thread-safety of data like Core Data properties centers around the possibility of conflicting changes from multiple threads. Atomicity at the property level doesn't really help with that (as stated), and the problem must be solved at a higher level. Exactly. However, even if only one thread can be changing the data, atomicity still matters. If the accessors aren't atomic, multiple read-only users of the data (in different threads) might get completely bogus results. This problem *can* be solved by atomicity at the property level, if you're prepared to take the potential performance hit from implementing it. Actually, it really can't be solved at the property level. Individual properties can generally never carry enough information about themselves to know what the right behavior is in the face of threads. Example: @property(...) ... firstName; @property(...) ... lastName; @property(...) ... firstAndLastNameForDisplay; If thread A is changing firstName while thread B is calling firstAndLastNameForDisplay, atomicity can only guarantee that - firstAndLastNameForDisplay won't crash. What it can't do is guarantee that you'll get the correct value from - firstAndLastNameForDisplay. For that to work, your model object has to know all about the dependencies between the three properties. Looks simple, but it isn't. Example question: Does changing firstName mean that firstAndLastNameForDisplay returns nothing until lastName has also been changed? ... what about the same lastName? I could go on. b.bum ___ 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: Setting data cell type for a specific row
On Jan 26, 2009, at 7:45 PM, I. Savant wrote: Well what did you expect it to do? Again ... you don't get a reference to an individual cell at a row/ column. Tables don't work that way in Cocoa. The cell for a column is a *prototype* cell that's reused (changed and re-rendered in the proper position per row). Changing the data cell changes the *one* prototype that's used. Just to clarify something that might not be so obvious, you need to respond with the preferred cell for *every* row. In other words, in your case, always answer with the usual cell until you get to the last row, then answer with the alternate cell. -- 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
ass/ssa support
Does anybody knows if there are some cocoa library to parse ass/ssa files? I know libass, but as far as i can see, it have a few memory leaks (and since i am planning to work with Cocoa Touch, i am really concerned about memory leaks). Thanks and best regards. Ariel Rodriguez, ___ 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
CoreData silently failing to insert?
I've got another CoreData problem, and this one is quite strange. In this case, I have an entity that subclasses an abstract entity, and for some very strange reason I cannot diagnose, it will only save managed objects in that entity if the properties have very specific values in them. Now, I know what you're thinking, but yes, I am validating the objects before inserting them, and they pass the validation, and the object is returned by -insertedObjects prior to the save, and saving does not cause the NSManagedObjectContext to return an error. The save goes absolutely perfectly, except that the objects aren't actually saved. The objects have zero constraints, except that all properties must be set (and they are; I checked). I already tried: * changing the backing store from SQLite to XML; the same thing happened * setting and changing constraints on some of the properties; nothing changed, although setting one to be too narrow for its normal range did generate expected validation errors * changing the property names; didn't make a difference * running the app with or without GC; non * running the app as either X86 or X86-64; not that either * running the app with the command line option - com.apple.CoreData.SQLDebug 3, and sure enough, despite the records validating and the MOC returning no errors upon save, no INSERT INTO command is issued to sqlite except for the handful of records with very specific values in them What do I do now? (And I'm hoping I get an are you sure it's plugged in?-type answer that turns out to be correct...) Nick Zitzmann http://www.chronosnet.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: Properties and memory management with overrides.
On Jan 26, 2009, at 16:26, Bill Bumgarner wrote: However, even if only one thread can be changing the data, atomicity still matters. If the accessors aren't atomic, multiple read-only users of the data (in different threads) might get completely bogus results. This problem *can* be solved by atomicity at the property level, if you're prepared to take the potential performance hit from implementing it. Actually, it really can't be solved at the property level. Individual properties can generally never carry enough information about themselves to know what the right behavior is in the face of threads. Example: Indeed. In general, accessing a property can have 3 possible outcomes: 1. The right value. 2. A wrong value. 3. Complete and utter garbage. Atomicity can eliminate the last case only. In general, that doesn't solve any problems at all, but in practice it might. Any notification-driven system (even single-threaded) can present an observer with a temporarily inconsistent data model (as in your firstName/lastName example). Therefore, observers should typically be coded defensively with regard to outcome #2 anyway. Coding defensively against outcome #3 is unlikely to practicable. *That's* the problem I meant can be solved by atomicity. ___ 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: Not Resolving Aliases
On 27 Jan 2009, at 07:39, Scott Ribe wrote: What are you actually trying to do? I was trying to send the path of a symbolic link (not the content of this link, which anyway might not exist) to another app. This other app displays all sort of information or metadata about this path. The sending app has an NSBrowser, which shows things which have been changed between TimeMachine updates. Among these are also symlinks. I have given up on NSWorkspace, LaunchServices and now send the path via Distributed Objects. Works perfectly. But I had some problems of enabling the other app to load to documents (it is Cocoa Document based) representing two symbolic links with the same content. And I still cannot drag a symlink to its dock icon. File - Open or the Services Menu work though. 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
Is there a more efficient way to get the first 4 bytes off a NSInputStream to compare
Here is what I am doing now.. I just feel like I have an extra step in converting the buffer into NSData...malloc...free uint sample = 0x04034b50; uint8_t buffer[sizeof(uint)]; [inputStream open]; [inputStream read: buffer maxLength:sizeof(buffer)]; NSData * d = [NSData dataWithBytes:buffer length:sizeof(buffer)]; uint * key = (uint *) malloc(sizeof(uint)); [d getBytes:key length:sizeof(uint)]; [inputStream close]; NSLog(@%u = %u, *key, sample); free(key); ___ 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: Not Resolving Aliases
I have given up on NSWorkspace, LaunchServices and now send the path via Distributed Objects. Hey, that surprises me ;-) Give what you said, my next attempt would have been constructing an open Apple Event... (Don't know if it would work, because I don't know when the normal resolution of symlinks aliases happens, but it's what I would have tried. Next up would have been fork/exec the open command.) It seems to me that this is a feature that you'll need to be proactive about testing against new releases. Resolution of symlinks aliases is normally considered a feature, so unless it's explicitly documented that your technique doesn't do this, you may be vulnerable to an OS update adding a feature and breaking your stuff... -- Scott Ribe scott_r...@killerbytes.com http://www.killerbytes.com/ (303) 722-0567 voice ___ 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: CoreData silently failing to insert?
On 2009 Jan 26, at 17:08, Nick Zitzmann wrote: ...saving does not cause the NSManagedObjectContext to return an error. ...MOC returning no errors upon save... Make sure you're looking at the YES/NO return value of - [NSManagedObjectContext save:] and not just the non-nil-ness of the NSError returned by reference. ___ 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.preferredPasteboardTypeFromArray
I'm trying to make an NSTextView do something rational when someone drags a
token from an NSTokenField. So I've got the NSTokenField producing a custom
drag type I've called TokenPboardType.
I've inherited from NSTextView and redefined readablePasteboardTypes to be:
- (NSArray*)readablePasteboardTypes; {
NSMutableArray*rtn = [NSMutableArrayarrayWithObject:TokenPboardType];
[rtn addObjectsFromArray:[superreadablePasteboardTypes]];
returnrtn;
}
and I redefined - (BOOL)readSelectionFromPasteboard:(NSPasteboard*)pboard
type:(NSString*)type;
to do what I want.
My trouble is that when I redefine -
(NSString*)preferredPasteboardTypeFromArray:(NSArray*)availableTypes
restrictedToTypesFromArray:(NSArray*)allowedTypes;
This method's list of allowedTypes when I do the drag doesn't include my
TokenPboardType. Now if I return TokenPboardType anyway, it seems to work. my
readSelectionFromPasteboard gets called with TokenPboardType and it all seems
to work. But it feels like I'm doing the wrong thing somehow, since from the
doco it sounds like you shouldn't return a type that is not in the allowedTypes.
Comments?
Stay connected to the people that matter most with a smarter inbox. Take
a look http://au.docs.yahoo.com/mail/smarterinbox
___
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 catch and log EXC_BAD_ACCESS?
On Mon, Jan 26, 2009 at 12:09 PM, Scott Ribe scott_r...@killerbytes.com wrote: Currently, the app just hangs and needs the user to send Force Quit to terminate the app. You sure about that? It can take a while to prepare the crash report, and during that time your app is certainly non-responsive. But that signal causes the system to terminate your application, and I have ***NEVER*** seen that termination fail, not under any circumstances. In fact, if the system can't terminate the app after EXC_BAD_ACCESS, there would be no reason to expect the user to be able to force quit it either... Actually it's pretty easy to avoid exiting due to EXC_BAD_ACCESS, just install a signal handler for SIGSEGV. Of course, doing something rational in such a signal handler is ever so slightly non-trivial. An initial force-quit can be easily blocked as well, install a handler for SIGINT. If you force quit a process a second time the system goes for SIGKILL, though, and you can't stop that one. However this sort of thing generally is not done, so if your app doesn't quit when you get an EXC_BAD_ACCESS it's probably because you're not actually getting an EXC_BAD_ACCESS to begin with. 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
Re: Is there a more efficient way to get the first 4 bytes off a NSInputStream to compare
On 27 Jan 2009, at 2:09 pm, Adam Venturella wrote: NSData * d = [NSData dataWithBytes:buffer length:sizeof(buffer)]; uint * key = (uint *) malloc(sizeof(uint)); [d getBytes:key length:sizeof(uint)]; uint key; [d getBytes:key length:sizeof(uint)]; but since you have merely wrapped buffer in NSData, you already have the buffer, so: uint key = *(uint*)buffer; is also exactly the same, you don't need the NSData at all (at least as far as this bit goes). --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: Core Data performance [Re: Knowing when a NSArrayController is ready]
I don't mean to hijack this thread, but I have had a related (?) problem where a transient String attribute is derived from a persistent Binary attributed (an archived NSAttributedString). When my NSTableView sorts on this column, and I modify a managed object displayed in the table, I get an error in the console: 2009-01-26 23:31:53.039 MyApp[414] *** NSRunLoop ignoring exception 'unresolved keypath: referenceString' that raised during posting of delayed perform with target 15f7e2e0 and selector 'invokeWithTarget: The table view, however, *is* able to sort on this attribute when I click the column header. Is sorting on transient attributes not fully supported? Dave On Jan 26, 2009, at 5:19 PM, Ben Trumbull wrote: On Jan 26, 2009, at 2:09 PM, jonat...@mugginsoft.com wrote: I was wondering about this - especially as I am occasionally getting a curious EXC_BAD_ACCESS when rebuilding my NSAttributed string (but that's another post). To me appear that there are 3 ways to do this: 1. make the string rep after the fetch. 2. cache it in the db as you say. 3. use an NSValueTransformer in the binding. Also, don't underestimate the power of writing your own custom NSValueTransformer. The default one used by transformable attributes is NSKeyedArchiver, but while flexible and powerful, it can be a bit slow for very small items. The RTFD is more or less static so maybe caching it in the db is the simplest and has the same memory footprint as the build on fetch approach. Caching in the db will provide a much better in memory footprint, at the expense of more disk use, and potentially slower saves. ___ 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: CoreData silently failing to insert?
On Jan 26, 2009, at 9:34 PM, Jerry Krinock wrote: Make sure you're looking at the YES/NO return value of - [NSManagedObjectContext save:] and not just the non-nil-ness of the NSError returned by reference. I'm doing that, too. It still returns YES even though the records were not actually saved. :( Nick Zitzmann http://www.chronosnet.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: How to catch and log EXC_BAD_ACCESS?
On Mon, Jan 26, 2009 at 10:43 PM, Michael Ash michael@gmail.com wrote: Actually it's pretty easy to avoid exiting due to EXC_BAD_ACCESS, just install a signal handler for SIGSEGV. In my experience, setting a handler for SIGSEGV is problematic because the crash reporter still starts up, so its best to handle the Mach exception directly instead of resorting to Unix signals (which seem to be emulated under Mach, rather than a native feature). The Crash Reporter is not always what you want, because illegal memory access is not always a fatal error in all cases, for example some language VMs use memory protection to implement funky GC algorithms. Anyway, to answer Oleg's question, I have some BSD-licensed code which demonstrates this. Once you figure out the somewhat-hairy Mach APIs, it is pretty straightforward: http://gitweb.factorcode.org/gitweb.cgi?p=factor/.git;a=blob_plain;f=vm/mach_signal.c;hb=HEAD Slava ___ 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: Is there a more efficient way to get the first 4 bytes off a NSInputStream to compare
Thanks! I knew I was doing to many steps! On Mon, Jan 26, 2009 at 8:44 PM, Graham Cox graham@bigpond.com wrote: On 27 Jan 2009, at 2:09 pm, Adam Venturella wrote: NSData * d = [NSData dataWithBytes:buffer length:sizeof(buffer)]; uint * key = (uint *) malloc(sizeof(uint)); [d getBytes:key length:sizeof(uint)]; uint key; [d getBytes:key length:sizeof(uint)]; but since you have merely wrapped buffer in NSData, you already have the buffer, so: uint key = *(uint*)buffer; is also exactly the same, you don't need the NSData at all (at least as far as this bit goes). --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: Core Data performance [Re: Knowing when a NSArrayController is ready]
poor hijacked thread. You cannot ask -executeFetchRequest: to either filter (by predicate) or sort (by sort descriptor) based on a transient or unmodeled property. The table view and array controller can happily sort or filter in memory. Performance on sorting large data sets in memory leaves much to be desired. However, if you must, you can strip off the sort descriptor before the fetch by using a subclass of NSArrayController (the methods to override are in NSObjectController.h) and then use the NSArray methods to handle the sort descriptor in memory. There are many derivations of that technique, frequently having both sort string and display string property. There is an ADC sample project about string Unicode normalization so you can use a search with an index even against complex internationalized text. http://developer.apple.com/samplecode/DerivedProperty/index.html For simple stuff, just drop the predicate or sort descriptor and process the results in memory. For larger data sets, use some persistent data as a bounding rect in a view clipping kinda way, so the final in memory processing only touches up the results instead of working with all of them. - Ben On Jan 26, 2009, at 8:53 PM, Dave Fernandes wrote: I don't mean to hijack this thread, but I have had a related (?) problem where a transient String attribute is derived from a persistent Binary attributed (an archived NSAttributedString). When my NSTableView sorts on this column, and I modify a managed object displayed in the table, I get an error in the console: 2009-01-26 23:31:53.039 MyApp[414] *** NSRunLoop ignoring exception 'unresolved keypath: referenceString' that raised during posting of delayed perform with target 15f7e2e0 and selector 'invokeWithTarget: The table view, however, *is* able to sort on this attribute when I click the column header. Is sorting on transient attributes not fully supported? Dave On Jan 26, 2009, at 5:19 PM, Ben Trumbull wrote: On Jan 26, 2009, at 2:09 PM, jonat...@mugginsoft.com wrote: I was wondering about this - especially as I am occasionally getting a curious EXC_BAD_ACCESS when rebuilding my NSAttributed string (but that's another post). To me appear that there are 3 ways to do this: 1. make the string rep after the fetch. 2. cache it in the db as you say. 3. use an NSValueTransformer in the binding. Also, don't underestimate the power of writing your own custom NSValueTransformer. The default one used by transformable attributes is NSKeyedArchiver, but while flexible and powerful, it can be a bit slow for very small items. The RTFD is more or less static so maybe caching it in the db is the simplest and has the same memory footprint as the build on fetch approach. Caching in the db will provide a much better in memory footprint, at the expense of more disk use, and potentially slower saves. ___ 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: Is there a more efficient way to get the first 4 bytes off a NSInputStream to compare
On 27 Jan 2009, at 4:17 pm, Adam Venturella wrote: Thanks! I knew I was doing to many steps! uint key = *(uint*)buffer; You will also need to consider byte-ordering if your app or the data could be used on different architectures. If for example your input data is known to be big-endian, you'll probably want to do this: uint key = NSSwapBigIntToHost( *(uint*)buffer ); --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: How to catch and log EXC_BAD_ACCESS?
On Jan 26, 2009, at 8:43 PM, Michael Ash wrote: Actually it's pretty easy to avoid exiting due to EXC_BAD_ACCESS, just install a signal handler for SIGSEGV. Of course, doing something rational in such a signal handler is ever so slightly non-trivial. Hahahaha yeah. That is an understatement. Before anyone thinks that handling SIGSEGV and recovering from it is a good idea. It isn't. Don't do it unless you are prepared to invest a TON of time into doing so. It isn't really even a good idea to try and *emergency save* the user's data. SIGSEGV (like other such crashes) indicates that something has gone horribly wrong. Most likely, memory corruption has occurred. Thus, if you try to save anything, you will quite likely be saving corrupted data. You better had have a 100% bulletproof means of validating the data post-crash to determine what can be salvaged!! Of the various projects I have worked on that tried to go down the we'll detect crashes and recover! path, every one of them would have achieved a far higher return-on-engineering-investment by focusing on creating working software instead. b.bum ___ 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: Setting data cell type for a specific row
On Jan 26, 2009, at 7:45 PM, I. Savant wrote:
... sorry?
How does implementing one delegate method that's directly targeted
at the very problem you're trying to solve complicate things?
I was confused about what to return from the method if I just wanted
the data cell preserved as is. It turned out to be really simple, but
the solution didn't hit me on the first few passes.
- (NSCell *) tableView:(NSTableView *) tableView
dataCellForTableColumn:(NSTableColumn *) tableColumn
row:(NSInteger) row
{
if ([[tableColumn identifier] isEqualToString: @delete]
(row == [[controller arrangedObjects] count] - 1))
return addCell;
else
return [tableColumn dataCellForRow: row];
}
Thanks for your help. It was in typing up a rebuttal, that I stumbled
upon this solution. Simple, clean, elegant. I guess delegates DO have
a purpose :)
Thanks again
- 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: Not Resolving Aliases
On 27 Jan 2009, at 11:05, Scott Ribe wrote: I have given up on NSWorkspace, LaunchServices and now send the path via Distributed Objects. Hey, that surprises me ;-) Give what you said, my next attempt would have been constructing an open Apple Event... (Don't know if it would work, because I don't know when the normal resolution of symlinks aliases happens, but it's what I would have tried. Next up would have been fork/exec the open command.) I also do not know. But I know that Distributed Objects does work (it just sends a string and doesn't care nor know what this string stands for), and I have rather little experience with creating Apple Events. So DO was for me the easiest solution I could think of. 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
