Re: odd behavior with NSError?
On Oct 15, 2009, at 10:41 pm, Nathan Vander Wilt wrote:
Ouch. So the following pattern is incorrect?
NSError* internalError = nil;
(void)[foo somethingReturningBool:bar error:internalError];
if (internalError) {
// ...
}
http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Conceptual/ErrorHandlingCocoa/CreateCustomizeNSError/CreateCustomizeNSError.html#//apple_ref/doc/uid/TP40001806-CH204-BAJIIGCC
Note: Cocoa methods that indirectly return error objects in the Cocoa error
domain are guaranteed to return such objects if the method indicates failure by
directly returning nil or NO. With such methods, you should always check if the
return value is nil or NO before attempting to do anything with the NSError
object.
mmalc
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Re: How to detect and disable/delay sleep event in cocoa for some critical threads to complete
Hi Parimal, See NSWorkspace. NSWorkspaceWillSleepNotification Posted before the machine goes to sleep. An observer of this message can delay sleep for up to 30 seconds while handling this notification. -Ken On Thu, Oct 15, 2009 at 10:36 PM, Parimal Das parimal@webyog.comwrote: Hi All When my app is doing some critical I/O transactions with OpenSsl, And the user is sleeping the machine (just by folding the laptop). Some of the app threads are hanging Is there any way in cocoa to do following steps? Also is this logic correct? 1. Detect when a sleep (soft or hard) is issued 2. Delay sleep till my threads come out 3. Then continue to going into sleep. Please suggest. Thank you -Parimal Das ___ 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/kenferry%40gmail.com This email sent to kenfe...@gmail.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: odd behavior with NSError?
Bill Bumgarner wrote: On Oct 15, 2009, at 10:41 PM, Nathan Vander Wilt wrote: ... You're saying that some methods go out of their way to trample my (potentially unavailable) error storage even on success? If the error storage is not available, as indicated by passing an NSError** of nil, then the unavailable error storage is never written. Correct? I just want to be sure I understand this completely. -- GG ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: odd behavior with NSError?
(response is pedantic for the purposes of the archive :)
even more better flaming pedanticism!
On Oct 15, 2009, at 10:41 PM, Nathan Vander Wilt wrote:
Ouch. So the following pattern is incorrect?
Yes; it is incorrect.
NSError* internalError = nil;
(void)[foo somethingReturningBool:bar error:internalError];
if (internalError) {
// ...
}
Specifically, assuming anything about the value of 'internalError'
without first determining the return value of -
somethingReturningBool:error: returned a value indicating an error
(typically NO/0/nil/NULL) is an error.
The specific issue is failing to check the return value of the method
before touching the internalError value. You MUST check it.
However, the documentation also encourages not assigning nil to local
NSError* declarations. Not initializing locals is imho,
professionally, realistically, and morally wrong. It's just a bug
waiting to happen. And you have to know it is, just looking at it.
Whatever might have been saved / gained by not initializing them was
wasted, for all of time, the first time I had to debug the segfault.
Which I did, like an idiot, a long time ago.
Let me just say I really especially appreciated the time spent
debugging other people not initializing their locals. It wasn't
visions of sugar plums.
Other people have different perspectives on local variable
initialization. Wrong perspectives, but different. Fortunately now,
they waste their arguments upon the merciless http://llvm.org/img/DragonFull.png
- Ben
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Re: Programming Style: Method Definition with or without a semicolon.
I used the semi-colon until Ali at Apple said that we don’t do it that way.
So I no longer do it that way.
Personal preference only.
On Oct 15, 2009, at 8:54 PM, Frederick C. Lee wrote:
1) I've seen an alternative way of defining a method, with the semicolon
after the declaration, before the body:
- (NSArray *)sortedIncredients; -- notice the semicolon
{
...
}
2) ... versus the standard declaration + body of the definition (without the
semicolon):
- (NSArray *)sortedIncredients {
...
}
Both seem to work the same.
Is there any benefit of (1) over (2) or is it merely style of programming?
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Re: odd behavior with NSError?
On 16/10/2009, at 4:45 PM, Ben Trumbull wrote: Other people have different perspectives on local variable initialization. Wrong perspectives, but different. Fortunately now, they waste their arguments upon the merciless http://llvm.org/img/DragonFull.png Clangdor the Burninator. Excellent. -- Rob Keniger ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Programming Style: Method Definition with or without a semicolon.
On Fri, Oct 16, 2009 at 12:01 AM, Scott Anguish sc...@cocoadoc.com wrote: I used the semi-colon until Ali at Apple said that we don’t do it that way. Heh, I didn't use the semi-colon until Tim at Omni said we do it that way. :-P The triple-clickiness is a very nice convenience (especially when you are putting together a pipeline and uniq(1)ing things together) but it's always bugged me that it's never explicitly allowed. I think I filed a radar on its undocumentedness a while back and it came back dup'd. --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: Programming Style: Method Definition with or without a semicolon.
Hello,
If it's a feature, then it's definitely a new one since the original
specification of Objective-C. It turned out to be surprisingly hard
to find that specification, but I found a grammar description here: http://www.cilinder.be/docs/next/NeXTStep/3.3/nd/Concepts/ObjectiveC/B_Grammar/Grammar.htmld/index.html
There it says:
instance-method-definition:
inline: sp.gifinline: c2D.gif [ method-type ] method-selector [ declaration-list ] compound-
statement
method-selector:
inline: sp.gif
unary-selector
inline: sp.gif
keyword-selector [ , ... ]
inline: sp.gif
keyword-selector [ , parameter-type-list ]
The declaration-list and compound-statement are not specified further
and are taken from the C spec. In other words: There's no semicolon.
On the other hand, the grammar spec has been removed from Apple's
documentation, and I suppose the official line is now Objective-C is
whatever we ship with Xcode.
--Sander
1) I've seen an alternative way of defining a method, with the
semicolon after the declaration, before the body:
- (NSArray *)sortedIncredients; -- notice the semicolon
{
...
}
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Re: Record and Playback immediately
Yes, the coreaudio list: http://lists.apple.com/mailman/listinfo/coreaudio-api You can find the listing of available lists on http://lists.apple.com/mailman/listinfo Le 16 oct. 2009 à 04:41, Symadept a écrit : Hi Jean, Thank you very much for your response. Similarly Cocoa dev do we have any Macos Dev forums where I can ask this kind of questions. And I am working on AQRecord/Play. But still I haven't figured it out how to make it immediately. Regards Mustafa On Thu, Oct 15, 2009 at 4:27 PM, Jean-Daniel Dupas devli...@shadowlab.org wrote: Le 15 oct. 2009 à 09:41, Symadept a écrit : Hi, I took the examples of afplay afrecord. But it does the normal record to completion and play to completion manner. How can I Record into buffer and play from there. I hope instead of AFPlay, Queue based recording and playing would help. Can anybody put some light on this example. Cocoa-dev is not Macos-dev. This question has nothing to do with Cocoa and should be ask on coreaudio list. That said, maybe the AudioQueueTools sample code may help. -- Jean-Daniel -- Jean-Daniel ___ 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: Status Bar Search Field Can't Get Focus w/ LSUIElement PList Setting
In case anyone that is interested, I've solved this problem. Here's how: In the -awakeFromNib method, add the following two lines (where statusItem is an NSStatusItem *): [statusItem setAction:@selector(statusItemClicked:)]; [statusItem setTarget:self]; and make sure to comment the line: // [statusItem setMenu:statusItemMenu]; -- comment so your click selection method is invoked instead Now in the custom selection method -statusItemClicked: do the following (where statusItemMenu is an NSMenu *): // Show the popup menu associated with the status item. [statusItem popUpStatusItemMenu:statusItemMenu]; // *** Must activate *after* showing the popup menu to obtain focus for the search field. *** [NSApp activateIgnoringOtherApps:YES]; And that's it. The problem I was having was placing the -activateIgnoringOtherApps: before popping up the status item menu. If you place it before popping up the menu it will only work the first time (from xcode) because it auto-activates. But the app needs to be activated after the menu is popped up in order for the search field to receive focus. Oh, and make sure LSUIElement is set in the Info.plist file. Best, Dalmazio On 2009-10-15, at 5:19 PM, Dalmazio Brisinda wrote: I'm having a problem getting a NSSearchField to work properly in an NSStatusItem a la the Apple Help menu or the Apple Spotlight menu. Here's what's happening. I create my custom NSStatusItem / menu / custom view/ search field, and insert into into the status bar in -awakeFromNib. Setting the LSUIElement property in the Info.plist file then results in everything displaying and working correctly the very first time the NSStatusItem is clicked (after running the application from Xcode and it becomes active). The associated menu pops up with the custom view and search field, the search field has focus, shows the insertion pointer, and I can type a search term, press enter, and everything works great. But if I select the NSStatusItem a second time to perform a second search there is no insertion pointer, and I can't select the search field. When I try clicking around the custom view several times I get the following error: HIViewSetFocus() failed with error -30599 Now, if I don't set the LSUIElement property in the Info.plist file, and just run the application as a normal application, then I can get around the above problem by selecting the application first (making it active) and then the search field in the menu associated with the NSStatusItem always gets focus, the insertion pointer appears, and everything works fine. But I want to build an application that doesn't have a doc icon, window, or main menu using the LSUIElement property setting. From what I understand, it seems that the application needs to be active in order for the search field to get focus and for the text insertion pointer to appear, but I don't understand how to force this for an application that doesn't have a main window, doc icon, or menu bar by enabling LSUElement. Can anyone help? Best, Dalmazio ___ 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
NSURLRequest SSL Mac vs iPhone
I have the same piece of code making a secure request to a server in a Mac application and in an iPhone app. Both use an NSURLRequest with exactly the same settings, message, body, etc. On the Mac, the request succeeds, returning the data expected. On the iPhone however, the request fails with an untrusted server certificate error (NSURLErrorDomain -1202). I suspected that the iPhone implementation somehow doesn't have access to the root certificates, so I checked on the servers SSL cert using openssl. Openssl says: unable to verify the first certificate. So now I figure that the Mac (10.6.1) implementation just allows the request to proceed when the verification fails (it doesn't return an error of any kind actually). Can anyone shed some light on this? Thanks, Greg ___ 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: Status Bar Search Field Can't Get Focus w/ LSUIElement PList Setting
Oops. I spoke too soon. It *seems* to work because I send a URL off to Safari (which becomes active) and then with Safari active I try clicking on the status bar item and the search field accepts focus. But if I switch to another application first, the same problem appears as before. I have to click on the status bar item twice (the popup shows up disappears and shows up again) before I can edit the search field. ??? Anyone have any ideas? Best, Dalmazio On 2009-10-16, at 1:36 AM, Dalmazio Brisinda wrote: In case anyone that is interested, I've solved this problem. Here's how: In the -awakeFromNib method, add the following two lines (where statusItem is an NSStatusItem *): [statusItem setAction:@selector(statusItemClicked:)]; [statusItem setTarget:self]; and make sure to comment the line: // [statusItem setMenu:statusItemMenu]; -- comment so your click selection method is invoked instead Now in the custom selection method -statusItemClicked: do the following (where statusItemMenu is an NSMenu *): // Show the popup menu associated with the status item. [statusItem popUpStatusItemMenu:statusItemMenu]; // *** Must activate *after* showing the popup menu to obtain focus for the search field. *** [NSApp activateIgnoringOtherApps:YES]; And that's it. The problem I was having was placing the -activateIgnoringOtherApps: before popping up the status item menu. If you place it before popping up the menu it will only work the first time (from xcode) because it auto-activates. But the app needs to be activated after the menu is popped up in order for the search field to receive focus. Oh, and make sure LSUIElement is set in the Info.plist file. Best, Dalmazio On 2009-10-15, at 5:19 PM, Dalmazio Brisinda wrote: I'm having a problem getting a NSSearchField to work properly in an NSStatusItem a la the Apple Help menu or the Apple Spotlight menu. Here's what's happening. I create my custom NSStatusItem / menu / custom view/ search field, and insert into into the status bar in -awakeFromNib. Setting the LSUIElement property in the Info.plist file then results in everything displaying and working correctly the very first time the NSStatusItem is clicked (after running the application from Xcode and it becomes active). The associated menu pops up with the custom view and search field, the search field has focus, shows the insertion pointer, and I can type a search term, press enter, and everything works great. But if I select the NSStatusItem a second time to perform a second search there is no insertion pointer, and I can't select the search field. When I try clicking around the custom view several times I get the following error: HIViewSetFocus() failed with error -30599 Now, if I don't set the LSUIElement property in the Info.plist file, and just run the application as a normal application, then I can get around the above problem by selecting the application first (making it active) and then the search field in the menu associated with the NSStatusItem always gets focus, the insertion pointer appears, and everything works fine. But I want to build an application that doesn't have a doc icon, window, or main menu using the LSUIElement property setting. From what I understand, it seems that the application needs to be active in order for the search field to get focus and for the text insertion pointer to appear, but I don't understand how to force this for an application that doesn't have a main window, doc icon, or menu bar by enabling LSUElement. Can anyone help? Best, Dalmazio ___ 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: Programming Style: Method Definition with or without a semicolon.
On Oct 16, 2009, at 12:17 AM, Sander Stoks wrote: If it's a feature, then it's definitely a new one since the original specification of Objective-C. It turned out to be surprisingly hard to find that specification, but I found a grammar description here:http://www.cilinder.be/docs/next/NeXTStep/3.3/nd/Concepts/ ObjectiveC/B_Grammar/Grammar.htmld/index.html There it says: instance-method-definition: sp.gifc2D.gif [ method-type ] method-selector [ declaration- list ] compound-statement method-selector: sp.gifunary-selector sp.gifkeyword-selector [ , ... ] sp.gifkeyword-selector [ , parameter-type-list ] The declaration-list and compound-statement are not specified further and are taken from the C spec. In other words: There's no semicolon. On the other hand, the grammar spec has been removed from Apple's documentation, and I suppose the official line is now Objective-C is whatever we ship with Xcode. I haven't booted my NS 0.8 cube in about a decade, but I'm pretty sure the semi-colon was always required in the header file and always allowed in the @implementation. 'Twas many a moon ago, but, I do distinctly remember triple-clicking method declarations from headers (with semis) to copy-paste into my implementation without deleting the semi. It always stuck with me as an über-convenience. 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: Programming Style: Method Definition with or without a semicolon.
On 16.10.2009, at 03:35, Graham Cox wrote: On 16/10/2009, at 12:30 PM, Roland King wrote: I'm ploughing it with you, I hate it too and spend 30 seconds every time I let XCode stub out a function for me moving the brace onto the correct line, andputtingspacesbackbetweenparanetheses,bracketsandarguments so I have a hope in hell of reading the code later. Agree 2000%! But you don't have to let Xcode frustrate you like this - you can define your own templates for all of the stubs it inserts. How? Where?!!! :-D -- Uli Kusterer The Witnesses of TeachText are everywhere... http://www.masters-of-the-void.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: NSURLRequest SSL Mac vs iPhone
On 16 Oct 2009, at 00:48, Greg Hoover wrote: I have the same piece of code making a secure request to a server in a Mac application and in an iPhone app. Both use an NSURLRequest with exactly the same settings, message, body, etc. On the Mac, the request succeeds, returning the data expected. On the iPhone however, the request fails with an untrusted server certificate error (NSURLErrorDomain -1202). My guess is the root certificates are different on the two platforms. Just a guess, but if the server you're connecting to is using a cert signed by a weird authority, that might be it. I suspected that the iPhone implementation somehow doesn't have access to the root certificates, so I checked on the servers SSL cert using openssl. Openssl says: unable to verify the first certificate. So now I figure that the Mac (10.6.1) implementation just allows the request to proceed when the verification fails (it doesn't return an error of any kind actually). Can anyone shed some light on this? OpenSSL is a red herring. NSURLRequest doesn't use openssl to verify certificates. In fact, openssl has no root certs installed at all by default on OS X, so it'll fail to verify any certificate at all. ___ 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: debugging cursors
On 08.10.2009, at 23:02, David M. Cotter wrote: sorry, yes. when the user types a number in a box and presses enter, i create a cursor based on that number and set it. So now you've told us what you are doing, you still haven't said why ... ? Please tell us, in high-level terms that a user would understand, why you need to do this, and it can help us provide an alternate approach. You are really making it hard to give you answers. I don't like the article I. Savant linked to, because it is very condescending, but here's another one along the same vein that may help you find a way to improve your question so we can actually answer it: http://www.mikeash.com/getting_answers.html Cheers, -- Uli Kusterer The Witnesses of TeachText are everywhere... http://groups.yahoo.com/group/mac-gui-dev/ ___ 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: SelectedRowIndexes
Thank you I.S.
This is what I am doing. Overriding the tableView APIs and keeping trace of
the selection through my array.
You're going to have to track changes in selection yourself
(examine the NSTableView API - there are methods to help you with this).
Since I have noticed that even
selectRow:(int)rowIndex byExtendingSelection:(BOOL)flag
gets invoked with a sorted index (like 0, 1, 2...) in case of multiple
selection, I guess I have to override mouseDown and keyDown to invoke
selectRow by myself passing the sorted and right sequence of indexes.
If you meant some other specific API, please let me know which one.
1 - Click the third row, shift-click the seventh row. Now the
selection index set is now {2, 3, 4, 5, 6}.
Ok, this is equal to my selection sort order
2 - With that last result, command-click row 3, then, 4, then 3 again.
The selection set is now {2, 3, 5, 6}.
command-click row 3 - now my selection is {3, 4, 5, 6}
command-click row 4 - now my selection is {4, 5, 6}
command-click row 3 - now my selection is {4, 5, 6, 3}
3 - Click row 7 shift-click row 6, then Cmd-click row 8. Selection is
now {5, 6, 7}.
click row 7 - now my selection is {6}
shift-click row 6 - now my selection is {6, 5}
command-click row 8 - now my selection is {6, 5, 7}
It makes sense.
:-D
--
L.L.
Da: I. Savant idiotsavant2...@gmail.com
Data: Wed, 14 Oct 2009 12:11:39 -0400
A: gMail.com mac.iphone@gmail.com
Cc: cocoa-dev@lists.apple.com
Oggetto: Re: SelectedRowIndexes
On Oct 14, 2009, at 11:55 AM, gMail.com wrote:
Oh, come on, at least pick a witty pseudonym. :-D
when I call [tableView selectedRowIndexes];
I always get a indexSet already sorted by row.
Instead I need to sort it as the selection order.
I mean, if the user selected the rows in the order
Row 6
Row 2
Row 8
I want to get 6, 2, 8 and not 2, 6, 8 as I get now with
selectedRowIndexes.
How can I do that?
You can't. Not with -selectedRowIndexes. As you said, it returns an
NSIndexSet. Sets are unordered by nature. Not in the sense you're
looking for. They're kept internally as an ascending-order list for
efficiency.
Also consider a few scenarios that will affect the selection order:
1 - Click the third row, shift-click the seventh row. Now the
selection index set is now {2, 3, 4, 5, 6}.
2 - With that last result, command-click row 3, then, 4, then 3 again.
The selection set is now {2, 3, 5, 6}.
3 - Click row 7, shift-click row 6, then Cmd-click row 8. Selection is
now {5, 6, 7}.
Considering these scenarios, what would your selection order be in
each? What about combining them? Selection can go in many directions
and things can be added and removed to/from anywhere in the set. Think
carefully - getting this basic behavior wrong has the potential to
annoy users.
Please note that I can select the rows even programmatically,
because the
user selects an object on the canvas.
Same as above - you'll have to track the order. I'd make a table
view subclass and override (calling super, then my custom code) the
selection-changing methods, then provide a separate selection-getting
routine (to provide an ordered array of indexes) called
orderedSelection or something similar. This gives you one central
place for user- or code-initiated selection changes.
--
I.S.
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Re: SelectedRowIndexes
Thanks. I will file a request. Well, you could do it yourself with heavy subclassing of NSTableView and overriding the -selectRow type of methods and keeping track of the order yourself. I did it, using my own array, but I have noticed that in case of multiple selection (by clicking on the tableView rows), even selectRow:(int)rowIndex byExtendingSelection:(BOOL)flag gets always invoked sequentially with a positive incremental rowIndex (like 0, 1, 2...). This doesn't help. I guess I have to override mouseDown and keyDown then invoke by myself selectRow sequentially passing my rowIndex. Da: Corbin Dunn corb...@apple.com Data: Wed, 14 Oct 2009 09:38:16 -0700 A: gMail.com mac.iphone@gmail.com Cc: cocoa-dev@lists.apple.com Oggetto: Re: SelectedRowIndexes On Oct 14, 2009, at 8:55 AM, gMail.com wrote: Hi, when I call [tableView selectedRowIndexes]; I always get a indexSet already sorted by row. Instead I need to sort it as the selection order. I mean, if the user selected the rows in the order Row 6 Row 2 Row 8 I want to get 6, 2, 8 and not 2, 6, 8 as I get now with selectedRowIndexes. How can I do that? You can't. Please log a bug requesting this ability (I have heard of more than one person wanting this). corbin ___ 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: Programming Style: Method Definition with or without a semicolon.
On 16/10/2009, at 7:12 PM, Uli Kusterer wrote: But you don't have to let Xcode frustrate you like this - you can define your own templates for all of the stubs it inserts. How? Where?!!! :-D http://arstechnica.com/apple/guides/2009/04/cocoa-dev-design-your-own-xcode-project-templates.ars http://www.cocoadev.com/index.pl?XcodeProjectTemplates http://www.macresearch.org/custom_xcode_templates http://briksoftware.com/blog/?p=28 --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
How to retrieve the font information from TrueType font file?
Hi, In the resource directory of my application bundle, there is a directory named Fonts, which includes all the fonts I can use. I means that the other uncontained fonts which come from the system or third party application will be invalid in my application. when the users use my application to draw text, only the fonts contained in the bundle should be valid. This is the backgroud of my question. After getting the font name from the font used by the user, need to check whether this font is valid, so, how to get the font information from my font files. I have read NSFontManager, it can get all the fonts in the system, I just to want to get the font name from my .ttf font file. I also have read ATS relalted, but failed to find a solution, there is no such interface to get detailed information from a ttf file. Hope the list can help me, the point of my question is how to get the information from the ttf font file? Thanks. ___ 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: odd behavior with NSError?
If we get an NSError, or in the case of NSAppleScript an NSDictionary with the error description, what is the Retain count and do we release it when we're done with it? I'd been not releasing them, I didn't allocate or copy it, but when I Build and Analyzed my code in 3.2 on Snow Leopard it said that I had a retain count of +1. Am I leaking? Any advice on this? Cheers Kevin ___ 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: Programming Style: Method Definition with or without a semicolon.
Woah, I'm sorry everybody... only when I saw my post in the list I realized that my copy-paste from Safari contained spacer GIFs. Here's the story again. --- If it's a feature, then it's definitely a new one since the original specification of Objective-C. It turned out to be surprisingly hard to find that specification, but I found a grammar description here: http://www.cilinder.be/docs/next/NeXTStep/3.3/nd/Concepts/ObjectiveC/B_Grammar/Grammar.htmld/index.html There it says: instance-method-definition: [ method-type ] method-selector [ declaration-list ] compound- statement method-selector: unary-selector keyword-selector [ , ... ] keyword-selector [ , parameter-type-list ] The declaration-list and compound-statement are not specified further and are taken from the C spec. In other words: There's no semicolon. On the other hand, the grammar spec has been removed from Apple's documentation, and I suppose the official line is now Objective-C is whatever we ship with Xcode. --- I already read the reply that it has probably always been in the language as a hidden feature, but my C++ past has made me weary of simply check what the compiler accepts instead of look it up in the standard. Since we're getting an alternative ObjC compiler now (with clang), perhaps a proper standard becomes more important..? --Sander ___ 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: GC crash due to being naughty
... This led me to generate a new hypothesis: that I am an idiot. I have now proven that hypothesis to my full satisfaction. ... A remarkably universal observation. I certainly have made it many times about myself. One of my rules of thumb about Cocoa coding is Code for your Inner Idiot. ___ 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: Toolbar with capsule style items (Similiar to Mail)
On Oct 15, 2009, at 13:39, Mazen Abdel-Rahman wrote: Hi All, I am new at programming with Cocoa - so I had a basic question. Is it possible to create a capsule style toolbar with a search field in it (like how Mail's toolbar is) just using interface building to create the UI? And if so - how would it be done? I am trying to create by first dragging a Toolbar item to the window. When I try to put a segmented control or a search control in the toolbar it gets rejected. If I understand you correctly you are dragging things into the toolbar itself, on the window. What you need to do is first double click the toolbar. This will bring up a sheet similar to what you get when customizing the toolbar in whichever app. You drag toolbar elements into that sheet from the IB palettes. Then, to customize the toolbar itself, you drag items from the sheet into the toolbar area of your window. F ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSInvocationOperations and background Threads
NSOperation.pdf states: For a non-concurrent operation, an operation queue automatically creates a thread and calls the operation object’s start method, the default implementation of which configures the thread environment and calls the operation object’s main method to run your custom code. In my app, I have a very long for-loop, each time thru which, I call NSInvocationOperation's -initWithTarget:selector:object:, followed by a call to add the resulting Operation to the NSOperationQueue. This queue is previously created via itsQueue = [[NSOperationQueue alloc] init], itsQueue being a instance variable. I do not have a custom -start or a -main method, so I count on the default -start and -main methods to handle the creation of a background Thread for me. It appears however, that in my app there is no background Thread that begins and the reason for that is because my app's window stays in the background until all NSOperations are complete. Any clues? By the way, when I alternately use either +detachNewThreadSelector or NSMachPorts, everything works just fine, including the app's window coming to the foreground, which event I force via [NSApp activateIgnoringOtherApps:YES] even before I start the background Thread. One last question .. if a new background Thread is automatically started when I add the new NSInvocationOperation to the NSOperationQueue, is there a NSAutoreleasePool automatically created before the above selector method starts and is this NSAutoreleasePool released after this method finishes? John Love Touch the Future! Teach! ___ 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: NSURLConnection timeout -- what happens?
On Oct 15, 2009, at 3:59 PM, Jens Alfke wrote: On Oct 15, 2009, at 11:44 AM, Stuart Malin wrote: I have looked through the NSURLConnection class reference, the NSURLRequest class reference, the URL Loading System guide, queried Google, searched mailing list archives, and even looked through NSURLConnection.h, but can not find documentation about what happens when an NSURLConnection times out. I presume that -- for the asynchronous case -- the invoker's - connection:didFailWithError: selector will be messaged. Is this so? Where is that defined? I think so, but I don't remember for sure. Why not try it? Set a timeout of 0.1 sec and send a request to a slow server. (shhepishly): good suggestion. Have done so: yes, an error is the result with code 1001, which is defined in NSURLError.h as NSURLErrorTimedOut But I haven't been able to find any documentation of what the possible errors are, and what the data would be for those reported failures. NSURLError.h. Sure enough -- there they are. But in practice you can sometimes get errors from other domains too, especially if SSL is involved. Well, logging will again be my friend :-) The URL Loading System guide has an example that uses the key NSErrorFailingURLStringKey to access a value from the error object's userInfo dictionary. Where might other such keys be defined? Tip: To see where a symbol is defined, hold down Command and double- click it. If you'd done that with that key, it would have taken you to NSURLError.h and answered part of your question. Ah, I hadn't tried copying that symbol from the docs to Xcode in order to search for its definition -- that's a good idea that I will hold for the future. Also, thanks for the Command-double-click tip -- I had been doing Option-click and then selecting Jump to definition from the contextual menu. ___ 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: Programming Style: Method Definition with or without a semicolon.
On Oct 16, 2009, at 3:55 AM, Bill Bumgarner wrote:
I haven't booted my NS 0.8 cube in about a decade, but I'm pretty
sure the semi-colon was always required in the header file and
always allowed in the @implementation.
'Twas many a moon ago, but, I do distinctly remember triple-clicking
method declarations from headers (with semis) to copy-paste into my
implementation without deleting the semi. It always stuck with me
as an über-convenience.
I too had the feeling this feature had been around forever, or at
least a pretty long time, possibly as far back as the NeXT days.
I don't like it because:
* It's jarring to see the semicolon used as a terminator in the method
declaration and as something else -- I'm not sure what; a superfluous
separator? -- in the definition where the line of code is otherwise
identical.
* I sometimes look for method overrides in my project by doing a
global search for )myMethod (trusting myself to be consistent about
having no space between the return type and the method name). If both
the declaration and the definition use the line (void)myMethod;, it
takes slightly more effort to distinguish the declarations from the
definitions in the search results. Sure, I could address this by
putting the opening brace on the same line, but I strongly prefer the
method's opening brace on its own line.
* I'm paranoid about getting used to the pattern
blah blah blah;
{
etc etc
}
...because it might make it easier to overlook a bug like:
if ([they respondsToSelector:@selector(didStartItFirst)] [(id)
they didStartItFirst]);
{
[self startThermonuclearWar];
}
--Andy
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Re: Programming Style: Method Definition with or without a semicolon.
On Oct 16, 2009, at 2:55 AM, Bill Bumgarner wrote:
On Oct 16, 2009, at 12:17 AM, Sander Stoks wrote:
If it's a feature, then it's definitely a new one since the
original specification of Objective-C. It turned out to be
surprisingly hard to find that specification, but I found a grammar
description here:http://www.cilinder.be/docs/next/NeXTStep/3.3/nd/
Concepts/ObjectiveC/B_Grammar/Grammar.htmld/index.html
There it says:
instance-method-definition:
sp.gifc2D.gif [ method-type ] method-selector [ declaration-
list ] compound-statement
method-selector:
sp.gifunary-selector
sp.gifkeyword-selector [ , ... ]
sp.gifkeyword-selector [ , parameter-type-list ]
The declaration-list and compound-statement are not specified
further and are taken from the C spec. In other words: There's no
semicolon.
On the other hand, the grammar spec has been removed from Apple's
documentation, and I suppose the official line is now Objective-C
is whatever we ship with Xcode.
I haven't booted my NS 0.8 cube in about a decade, but I'm pretty
sure the semi-colon was always required in the header file and
always allowed in the @implementation.
'Twas many a moon ago, but, I do distinctly remember triple-clicking
method declarations from headers (with semis) to copy-paste into my
implementation without deleting the semi. It always stuck with me
as an über-convenience.
b.bum
You can (or at least could) copy the entire @interface section from
the .h, paste into the .m and change @interface to @implementation and
it would compile.
So yes, this is legal:
@implementation MyObject : NSObjectSomeProtocol {
id myIvar;
}
- (void) doSomething;
@end
Not that I'd recommend or even admit to doing this (I have no idea
what happens if the @implementation class details are different from
the @interface ones, and, again, not that I'd ever admit to having
done this, it is easy to accidentally write your implementation in
your .h file and leave the pasted @interface in your .m).
Glenn Andreas gandr...@gandreas.com
The most merciful thing in the world ... is the inability of the human
mind to correlate all its contents - HPL
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NSCollectionView issues
Hi, I'm using a NSCollectionView to display a stack of items (a table) but since what's display is far too complex to be laid out programmatically I went for the NSCollectionView. And it's been all problems from the beginning. First of all with setContent that never worked no matter what I did...it only works if I bind the content to an nsarraycontroller. Now, when I add a new item in this table i want to be able to scroll it to the displayed area of the view, but the frameForItemAtIndex: method only appeared in 10.6, so I decided to use the subviews and get the frame this way, and now what did I discover: Suppose I have N items and therefore N subviews in the NSCollectionView, after changing the array that now contains N + 1 items, the nscollectionview has after the update N + N + 1 subviews! So, accessing subviews is not an option either. If anyone knows how to do fix these bugs, and how to disable the animation, i'd be really glad. I'm considering writing an homebrew nscollectionview. regards. ___ 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: NSURLRequest SSL Mac vs iPhone
On Oct 16, 2009, at 1:13 AM, Andrew Farmer wrote: On 16 Oct 2009, at 00:48, Greg Hoover wrote: I have the same piece of code making a secure request to a server in a Mac application and in an iPhone app. Both use an NSURLRequest with exactly the same settings, message, body, etc. On the Mac, the request succeeds, returning the data expected. On the iPhone however, the request fails with an untrusted server certificate error (NSURLErrorDomain -1202). My guess is the root certificates are different on the two platforms. Just a guess, but if the server you're connecting to is using a cert signed by a weird authority, that might be it. It's signed by Verisign. Where does NSURLRequest and its supporting routines find the CA root certs? I suspected that the iPhone implementation somehow doesn't have access to the root certificates, so I checked on the servers SSL cert using openssl. Openssl says: unable to verify the first certificate. So now I figure that the Mac (10.6.1) implementation just allows the request to proceed when the verification fails (it doesn't return an error of any kind actually). Can anyone shed some light on this? OpenSSL is a red herring. NSURLRequest doesn't use openssl to verify certificates. In fact, openssl has no root certs installed at all by default on OS X, so it'll fail to verify any certificate at all. Well when I run OpenSSL on my own server it checks out fine. I was thinking that my CA root certs were just out of date, but when I run OpenSSL its more like it can't find several certs that should be part of the chain. ___ 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: NSCollectionView issues
10.5's collection view is, safe to say, kind of a train wreck. I've had to work around quite a few things. Your problem is solvable by asking the NSCollectionViewItem created for your new table element for its view and to have that view scrollRectToVisible: for its bounds. If you need to get the ViewItem for a specific index (available via NSCollectionView's itemAtIndex: under 10.6), you'll need to go into slightly undocumented land and look at the collection view's _targetItems ivar. It contains the list of NSCollectionViewItems currently displayed in the collection view. Make sure you conditionalize this for 10.6 as _targetItems isn't there anymore. Hope that helps -- Jim http://nukethemfromorbit.com On Fri, Oct 16, 2009 at 9:32 AM, Half Activist halfactiv...@gmail.com wrote: Hi, I'm using a NSCollectionView to display a stack of items (a table) but since what's display is far too complex to be laid out programmatically I went for the NSCollectionView. And it's been all problems from the beginning. First of all with setContent that never worked no matter what I did...it only works if I bind the content to an nsarraycontroller. Now, when I add a new item in this table i want to be able to scroll it to the displayed area of the view, but the frameForItemAtIndex: method only appeared in 10.6, so I decided to use the subviews and get the frame this way, and now what did I discover: Suppose I have N items and therefore N subviews in the NSCollectionView, after changing the array that now contains N + 1 items, the nscollectionview has after the update N + N + 1 subviews! So, accessing subviews is not an option either. If anyone knows how to do fix these bugs, and how to disable the animation, i'd be really glad. I'm considering writing an homebrew nscollectionview. regards. ___ 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/jturner.lists%40gmail.com This email sent to jturner.li...@gmail.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: NSCollectionView issues
On Oct 16, 2009, at 10:32 AM, Half Activist wrote: I'm using a NSCollectionView to display a stack of items (a table) but since what's display is far too complex to be laid out programmatically I went for the NSCollectionView. And it's been all problems from the beginning. Yes, depending on what you need from it, its convenience can be outweighed by its limitations. First of all with setContent that never worked no matter what I did...it only works if I bind the content to an nsarraycontroller. Okay ... what have you tried? Can't help if you don't say what you did. Now, when I add a new item in this table i want to be able to scroll it to the displayed area of the view, Can you rephrase this? The displayed area of the view is ambiguous, but generally the displayed area is displayed because the scroll vie is already scrolled to that area. :-) Did you mean you want to scroll to the currently-selected (or newly- added) collection view item (or some UI element within that view item)? Suppose I have N items and therefore N subviews in the NSCollectionView, after changing the array that now contains N + 1 items, the nscollectionview has after the update N + N + 1 subviews! So, accessing subviews is not an option either. I haven't heard of this problem but then again, I had dismissed NSCollectionView early on as not being up to the tasks for which I'd hoped it'd be useful, so my experience with it is limited. Again, what did you try? How did you go about this? I find it odd that it doesn't scroll to the selection (if that's what you were doing), but I imagine if you ask the array controller for the *arranged* index of the object just inserted (whole other question - ask it if it's required), then ask the collection view for the - itemAtIndex:, you can ask that item for its -view, then use the scrolling methods as needed. If anyone knows how to do fix these bugs, and how to disable the animation, i'd be really glad. I don't think there's any (public API) way to disable the animation. Why do you want to do that? I'm considering writing an homebrew nscollectionview. Depending on your needs, this could be easier. If you only need one column, it's *almost* trivial. Especially if, like NSCollectionView, the size of each view is the same. If they can vary in vertical size, you can even use the same prototype view approach by caching at least the height of the items for the current view width, which lets you quickly size the whole view and work out the rect for the desired item (or the items for the desired rect). This can *greatly* improve performance for lots of irregularly-sized items. Of course there is more than one way to approach this but building a basic one-column layout view like this is fairly simple. Even adding drag-and-drop to this isn't too difficult for a moderately-experienced Cocoa developer. -- 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: NSCollectionView issues
On Oct 16, 2009, at 11:42 AM, Jim Turner wrote: If you need to get the ViewItem for a specific index (available via NSCollectionView's itemAtIndex: under 10.6) Bah - I failed to notice -itemAtIndex: is also 10.6-only. I mostly agree with the train wreck sentiment. The 10.5 implementation seemed useful only for its most common demonstration: image thumbnails. -- 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: How to retrieve the font information from TrueType font file?
On Oct 16, 2009, at 3:31 AM, XiaoGang Li wrote: other uncontained fonts which come from the system or third party application will be invalid in my application. when the users use my application to draw text, only the fonts contained in the bundle should be valid. This is the backgroud of my question. I don't know what your applications does, but that seems like a really strange feature. I have a lot of fonts installed, and when I use an app I expect to be able to use them. If the app only let me use a couple of fonts that were bundled with it, I'd call that a bug. (Also, do you have permission to bundle these fonts? Most fonts can't be re-distributed without a commercial license from the owner.) After getting the font name from the font used by the user, need to check whether this font is valid, so, how to get the font information from my font files. Isn't the set of bundled fonts hard-coded? Just make a list of their names (maybe in a plist file) and read that. I think trying to extract the names out of the font files themselves would be much too difficult since there's no API for it. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSURLRequest SSL Mac vs iPhone
On Oct 16, 2009, at 7:52 AM, Greg Hoover wrote: It's signed by Verisign. Where does NSURLRequest and its supporting routines find the CA root certs? In the Keychain. You can see the list of pre-installed root certs by launching Keychain Access and selecting System Roots from the keychain list. (It's also possible for other roots to be added to the system or login keychain, esp. if you're in a corporate environment.) I'm not sure if there's a way to find the root certs on iPhone. It would certainly have to be done programmatically, as there's no UI for viewing the keychain. The Keychain API on iPhone is entirely different than the one on Mac OS, and even more confusing. You should probably take this to the apple-cdsa list, which is actually for any security/crypto related issues. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: A good Obc-C framework for sending email?
On Oct 15, 2009, at 4:34 PM, Peter Hudson wrote: The ED code looks like interesting and I will give it a try as well. Does anybody know of a good primer on creating / sending email ( possibly in a Cocoa / Objective-C environment ) I don't think there is one, given how hard it is to even find code for doing it at all. BTW I just mentioned off-list to Ben that these days it's probably better not to use email at all, when trying to send a message back from the app to the developer (like for feedback or crash reports.) Instead use HTTP — on the client side make an NSURLConnection to send the data in a POST, and on the server just hack together a little PHP script to receive the data and process it. Uli Kusterer's UKCrashReporter does this. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSInvocationOperations and background Threads
On Oct 16, 2009, at 7:01 AM, John Love wrote: I do not have a custom -start or a -main method, so I count on the default -start and -main methods to handle the creation of a background Thread for me. You don't need them if you're using NSInvocationOperation. The documentation was talking about those methods being defined in the NSOperation subclass, and NSInvocationOperation just does the invocation in its main method. And they don't create the thread; NSOperation spins off the thread in different ways depending on your OS and CPU architecture. It appears however, that in my app there is no background Thread that begins and the reason for that is because my app's window stays in the background until all NSOperations are complete. Any clues? Can you verify this in the debugger by breaking on the method being invoked? I've never seen an NSInvocationOperation run in the same thread in which it was added to a queue; in fact, this should not be possible in Snow Leopard and later. 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: A good Obc-C framework for sending email?
The ED code looks like interesting and I will give it a try as well. Does anybody know of a good primer on creating / sending email ( possibly in a Cocoa / Objective-C environment ) I don't think there is one, given how hard it is to even find code for doing it at all. Maybe this could be helpful? http://vafer.org/blog/20080604120118 BTW I just mentioned off-list to Ben that these days it's probably better not to use email at all, when trying to send a message back from the app to the developer (like for feedback or crash reports.) Instead use HTTP — on the client side make an NSURLConnection to send the data in a POST, and on the server just hack together a little PHP script to receive the data and process it. Totally agree. Uli Kusterer's UKCrashReporter does this. And others too ;) http://vafer.org/projects/feedbackreporter/ We have a bunch of them these days actually: http://www.red-sweater.com/blog/860/crash-reporter-roundup cheers -- Torsten ___ 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: odd behavior with NSError?
On 2009 Oct 16, at 03:44, Kevin Bracey wrote: If we get an NSError, or in the case of NSAppleScript an NSDictionary with the error description, what is the Retain count The retain count of an object is equal to 1 for alloc + the number of - retain messages - the number of -release messages that the object has been sent. (I realize that's not the answer you wanted ... read on.) and do we release it when we're done with it? No, because you didn't alloc, copy or retain it. I'd been not releasing them, I didn't allocate or copy it, but when I Build and Analyzed my code in 3.2 on Snow Leopard it said that I had a retain count of +1. It had better be, because if it was not = 1 it would be gone. Am I leaking? No. Whoever retained it is responsible for releasing it. In this trivial case, *probably* whoever gave it to you autoreleased it. But use such conjectures for debugging only, never for design. ___ 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: odd behavior with NSError?
Kevin Bracey wrote: If we get an NSError, or in the case of NSAppleScript an NSDictionary with the error description, what is the Retain count and do we release it when we're done with it? Wrong question. The retain count is not an ownership count. The right question is Do I own it? If you own it, you're responsible for releasing it. If you don't own it, you must not release it. I'd been not releasing them, I didn't allocate or copy it, but when I Build and Analyzed my code in 3.2 on Snow Leopard it said that I had a retain count of +1. Am I leaking? Any advice on this? Find the word NSError on this page: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/ MemoryMgmt/Articles/mmObjectOwnership.html It's under the heading Objects Returned by Reference. -- GG ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSURLRequest SSL Mac vs iPhone
On 16 Oct 2009, at 15:52, Greg Hoover wrote: It's signed by Verisign. Where does NSURLRequest and its supporting routines find the CA root certs? Are you sure it's the root certificate that it needs and not some certificate beneath that? Some CAs sign their SSL certs with certificates a few layers down from the actual root, and if you don't include the extra ones in the certificate chain **on your web server** then some machines would flag up an error while others (if they had some of these certificates installed locally) wouldn't. That seems to match the symptoms you're reporting, so it's worth checking out. Kind regards, Alastair -- http://alastairs-place.net ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: A good Obc-C framework for sending email?
On 16 Oct 2009, at 03:54, Andrew Farmer wrote: On 15 Oct 2009, at 13:34, Ben Haller wrote: Hi all. I need a good Obj-C framework for sending email. I used to use the Message.framework associated with Apple's Mail, but they killed that a long time ago, sadly. Then I used Pantomime; but it seems to also be abandoned, now, and it is crashing on 10.5 (and it was never terribly reliable anyway). Does anybody know of a good replacement? I haven't had any luck trying to find one using Google. Keep in mind that many users may not have any SMTP server configured -- an increasing number of users use webmail for everything, and don't have a desktop client set up. And, in many of these cases, they may be behind a firewall or ISP that blocks connections to port 25 (SMTP) on all servers other than their own. If you need to reliably deliver email from a user's machine, you'll probably need to set up a gateway of some sort yourself, or have them input SMTP settings manually. Or you could do what we do and ask their mail client to deliver it for us. The code we use for that is Open Source, and you can get it here: http://www.coriolis-systems.com/opensource/ CSMail can also generate messages and pop them up in their client ready for them to send themselves, which is something we use in some circumstances as well. (It's possible that we have updated CSMail a bit since the version on that page, I don't know... but if someone's interested in using it, I can check.) Kind regards, Alastair. -- http://alastairs-place.net ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Extract plain text content from a Text View
Hi all, Is there a way to get the plain text content out of an NSTextStorage object (displaying using a Text View) that contains rich text and images? I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. Thanks, Ian. -- ___ 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 good Obc-C framework for sending email?
On Oct 16, 2009, at 12:04 PM, Alastair Houghton wrote: Or you could do what we do and ask their mail client to deliver it for us. What if they don't have a mail client configured? As Andrew said in the message you replied to: an increasing number of users use webmail for everything, and don't have a desktop client set up. Most of the people I work with at Google use GMail for everything. In that environment if an app launched Mail.app to send mail it wouldn't work, because chances are the user's never launched it, let alone configured an account. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Extract plain text content from a Text View
On Oct 16, 2009, at 12:37 PM, Ian Piper wrote: Is there a way to get the plain text content out of an NSTextStorage object (displaying using a Text View) that contains rich text and images? I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. NSTextStorage is a subclass of NSAttributedString, which has a -string property. This is easy to overlook :) —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Extract plain text content from a Text View
NSTextStorage is a subclass of NSMutableAttributedString. Is that enough of a hint? Douglas Davidson On Oct 16, 2009, at 12:37 PM, Ian Piper ianpi...@mac.com wrote: Hi all, Is there a way to get the plain text content out of an NSTextStorage object (displaying using a Text View) that contains rich text and images? I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. Thanks, Ian. -- ___ 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/ddavidso%40apple.com This email sent to ddavi...@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: Extract plain text content from a Text View
On Oct 16, 2009, at 3:37 PM, Ian Piper wrote: Is there a way to get the plain text content out of an NSTextStorage object (displaying using a Text View) that contains rich text and images? An NSTextStorage is a subclass of NSMutableAttributedString, which is a subclass of NSAttributedString. With this in mind ... I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. Seems a bit odd. Could you elaborate? -- 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: Extract plain text content from a Text View
On Oct 16, 2009, at 1:37 PM, Ian Piper wrote: Is there a way to get the plain text content out of an NSTextStorage object (displaying using a Text View) that contains rich text and images? http://developer.apple.com/mac/library/documentation/Cocoa/Reference/Foundation/Classes/NSAttributedString_Class/Reference/Reference.html#//apple_ref/doc/uid/2166-string 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: Extract plain text content from a Text View
On Oct 16, 2009, at 3:44 PM, I. Savant wrote: I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. Seems a bit odd. Could you elaborate? Let *me* elaborate on *that*. :-) You normally use predicates to filter objects in the model layer of your application. Note normally. If you're trying to provide a way to search within a text view, this is a very strange way of going about it: 1 - NSTextView already takes advantage of the Find field. 2 - Searching for a substring inside a string with a predicate searches the *whole* string as one ... this is only really useful if your text view's content is made up of a bunch of smaller units, but then again ... see 1 above. 3 - The predicate would be used to filter an array of NSTextStorages, not one NSTextStorage, returning those which contain your search string. 4 - Related to 3: if you're searching text storages because you treat them as individual subunits in your model, it would likely make more sense to apply this filter to the model layer. -- 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: A good Obc-C framework for sending email?
On 16-Oct-09, at 3:04 PM, Alastair Houghton wrote: On 16 Oct 2009, at 03:54, Andrew Farmer wrote: On 15 Oct 2009, at 13:34, Ben Haller wrote: Hi all. I need a good Obj-C framework for sending email. I used to use the Message.framework associated with Apple's Mail, but they killed that a long time ago, sadly. Then I used Pantomime; but it seems to also be abandoned, now, and it is crashing on 10.5 (and it was never terribly reliable anyway). Does anybody know of a good replacement? I haven't had any luck trying to find one using Google. Keep in mind that many users may not have any SMTP server configured -- an increasing number of users use webmail for everything, and don't have a desktop client set up. And, in many of these cases, they may be behind a firewall or ISP that blocks connections to port 25 (SMTP) on all servers other than their own. If you need to reliably deliver email from a user's machine, you'll probably need to set up a gateway of some sort yourself, or have them input SMTP settings manually. Or you could do what we do and ask their mail client to deliver it for us. The code we use for that is Open Source, and you can get it here: http://www.coriolis-systems.com/opensource/ CSMail can also generate messages and pop them up in their client ready for them to send themselves, which is something we use in some circumstances as well. (It's possible that we have updated CSMail a bit since the version on that page, I don't know... but if someone's interested in using it, I can check.) I am definitely interested in using it, Alastair. This solution would in fact be optimal for my purposes. If you could make sure it's up to date, that would be great. Ben Haller Stick Software ___ 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 good Obc-C framework for sending email?
On 16 Oct 2009, at 20:42, Jens Alfke wrote: On Oct 16, 2009, at 12:04 PM, Alastair Houghton wrote: Or you could do what we do and ask their mail client to deliver it for us. What if they don't have a mail client configured? As Andrew said in the message you replied to: an increasing number of users use webmail for everything, and don't have a desktop client set up. Most of the people I work with at Google use GMail for everything. In that environment if an app launched Mail.app to send mail it wouldn't work, because chances are the user's never launched it, let alone configured an account. True, but it's still better than trying to snarf their mail settings from somewhere random, and even if they're using GMail, Apple Mail *does* support it and so they can just give that their GMail settings, which is better than us asking for them separately IMO. Kind regards, Alastair. -- http://alastairs-place.net ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Can I make custom pasteboard type for an object reference?
On 10/15/09 6:34 AM, Timothy Stafford Larkin said: I messed around with this problem for some time, before I gave up trying to be clever and cast the pointer as an unsigned long. NSNumber *p = [NSNumber numberWithUnsignedLong:(unsigned long)object]; The number can be added to a pasteboard. Or if dragging more than one object, NSNumbers can be added to an NSArray, and the array written to the pasteboard. That seems quite dangerous, especially in a GC app. Creating such an NSNumber will not keep a strong reference to object, and so it risks getting prematurely collected. If you do do this, better CFRetain the object first. -- 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: Serial comm in Cocoa?
On 10/15/09 5:12 PM, Oftenwrong Soong said: What is the Cocoa-fied way to communicate via a serial port? The newest AMSerialPort code is now on sourceforge: http://sourceforge.net/projects/amserial/ -- 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: Can I make custom pasteboard type for an object reference?
On Oct 16, 2009, at 3:51 PM, Sean McBride wrote: On 10/15/09 6:34 AM, Timothy Stafford Larkin said: I messed around with this problem for some time, before I gave up trying to be clever and cast the pointer as an unsigned long. NSNumber *p = [NSNumber numberWithUnsignedLong:(unsigned long) object]; The number can be added to a pasteboard. Or if dragging more than one object, NSNumbers can be added to an NSArray, and the array written to the pasteboard. That seems quite dangerous, especially in a GC app. Creating such an NSNumber will not keep a strong reference to object, and so it risks getting prematurely collected. If you do do this, better CFRetain the object first. And that isn't enough to help if you use some sort of pasteboard/ scrapbook manager to store the dragging pasteboard, quit the app, and later relaunch it and try to drag the archived pasteboard from you pasteboard manager app. Glenn Andreas gandr...@gandreas.com http://www.gandreas.com/ wicked fun! quadrium2 | build, mutate, evolve, animate | images, textures, fractals, 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: NSArrayController performance using NSManagedObject content on 10.6 [SOLVED]
To begin with I built a test core data project utilising an NSArrayController bound to an NSTableView. This showed no performance issues at all so, surprise surprise, the problem was of my own creation. Looking at the Shark traces reveals an implementation change in the way that model observing is handled. So I go to my NSManagedObject subclass and note the following: [self addObserver:self forKeyPath:@message options:0 context:(void *) MGSContextMessage]; [self addObserver:self forKeyPath:@date options:0 context:(void *) MGSContextDate]; [self addObserver:self forKeyPath:@score options:0 context:(void *) MGSContextScore]; [self addObserver:self forKeyPath:@category options:0 context:(void *)MGSContextCategory]; Removing these observers fixes the problem. And why is self observing self? Because my NSManagedObject subclass has a number of derived properties backed by ivars. Core Data undo doesn't call accessors during undo, but does update KVO, so the observations keep the modelled and un-modelled derived properties in sync during undo. On 10.5 it's fine, on 10.6 dog slow. The solution is simply to ditch the un-modelled derived properties in favour of transient modelled properties. Core Data undo works and the self-self observation is redundant. On 15 Oct 2009, at 13:01, jonat...@mugginsoft.com wrote: I am using an array of simple NSManagedObject subclasses bound to an NSArrayController. The object graph is shallow with a tiny number of objects (500). All objects are loaded into the NSArrayController MOC using an NSFetchRequest with setReturnsObjectsAsFaults:NO. Therefore no faulting should be occurring. The app is garbage collected. The CoreData atore type is XML. The NSArrayController's arrangedObjects is bound to an NSTableView. The NSArrayController's filterPredicate is bound to an NSSearchField. Under 10.5 manipulating the NSArrayController's arrangedObjects using either sort descriptors or the predicate is quick. Under 10.6 the performance is noticeably worse. Shark shows the following for both 10.5 and 10.6 when the filter predicate is updated. The issue seems to make itself manifest on the lines marked . Obviously the implementation here is different. NSPointerArray -compact seems to be the centre of activity. What options do I have here to try and restore performance? Is the issue related to the use of NSManagedObject content at all? OS X 10.6 (poor) 0.0% 89.5% AppKit -[NSArrayController setFilterPredicate:] 0.0% 89.5% AppKit -[NSArrayController _didChangeArrangementCriteriaWithOperationsMask:useBasis:] 0.0% 65.3% AppKit -[NSArrayController _arrangeObjectsWithSelectedObjects:avoidsEmptySelection:operationsMask:useBasis :] 0.0% 49.7% AppKit - [NSArrayController _setObjects:] 0.0% 49.7% AppKit - [_NSModelObservingTracker setIndexReferenceModelObjectArray:clearAllModelObjectObserving:] 0.0% 49.7% AppKit - [_NSModelObservingTracker clearAllModelObjectObserving] 0.0% 49.6% AppKit - [_NSModelObservingTracker _registerOrUnregister:observerNotificationsForModelObject:] 0.0% 49.6% Foundation -[NSObject (NSKeyValueObserverRegistration) removeObserver:forKeyPath:] 0.0% 49.5% Foundation -[NSObject (NSKeyValueObserverRegistration) _removeObserver:forProperty:] 0.1% 49.0% Foundation _NSKeyValueObservationInfoCreateByRemoving 0.0% 48.5% Foundation - [NSKeyValueObservationInfo _initWithObservances:count:] 3.6% 46.4% Foundation - [NSConcretePointerArray compact] 10.0% 42.8% Foundation readWeakAt 9.7% 31.4% libobjc.A.dylib objc_read_weak 19.6% 19.8% libauto.dylib auto_read_weak_reference 0.2% 0.2% libSystem.B.dylib __spin_lock OS X 10.5 (Good) 0.0% 37.6% AppKit -[NSArrayController setFilterPredicate:] 0.0% 37.6% AppKit -[NSArrayController _didChangeArrangementCriteriaWithOperationsMask:useBasis:] 0.0% 29.9% AppKit -[NSArrayController _arrangeObjectsWithSelectedObjects:avoidsEmptySelection:operationsMask:useBasis :] 0.0% 13.3% AppKit - [NSArrayController _setObjects:] 0.0% 12.4% AppKit - [NSArrayController _updateObservingForAutomaticallyRearrangingObjects] 0.0% 12.1% AppKit - [_NSModelObservingTracker startObservingModelObjectsAtReferenceIndexes:] 0.0%
Re: NSArrayController performance using NSManagedObject content on 10.6 [SOLVED]
On Fri, Oct 16, 2009 at 2:49 PM, jonat...@mugginsoft.com jonat...@mugginsoft.com wrote: [self addObserver:self forKeyPath:@message options:0 context:(void *)MGSContextMessage]; [self addObserver:self forKeyPath:@date options:0 context:(void *)MGSContextDate]; [self addObserver:self forKeyPath:@score options:0 context:(void *)MGSContextScore]; [self addObserver:self forKeyPath:@category options:0 context:(void *)MGSContextCategory]; Removing these observers fixes the problem. If that's the solution (as opposed to *a* solution), it's upsetting. There are plenty of occasions where this is a necessary or useful pattern. Would someone from Apple like to chime in and explain why Jonathan is seeing the results he is? --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: Extract plain text content from a Text View
On 16 Oct 2009, at 20:51, I. Savant wrote: On Oct 16, 2009, at 3:44 PM, I. Savant wrote: I want to figure out a way to build a search predicate that will allow me to search a Text View and I think this is likely to be the only way. Seems a bit odd. Could you elaborate? Let *me* elaborate on *that*. :-) You normally use predicates to filter objects in the model layer of your application. Note normally. If you're trying to provide a way to search within a text view, this is a very strange way of going about it: 1 - NSTextView already takes advantage of the Find field. 2 - Searching for a substring inside a string with a predicate searches the *whole* string as one ... this is only really useful if your text view's content is made up of a bunch of smaller units, but then again ... see 1 above. 3 - The predicate would be used to filter an array of NSTextStorages, not one NSTextStorage, returning those which contain your search string. 4 - Related to 3: if you're searching text storages because you treat them as individual subunits in your model, it would likely make more sense to apply this filter to the model layer. I will elaborate... I have a Core Data application that has a Text View in its main window, and also has a Find field. I want to create a search field predicate to allow the user to search the text in the Text View. I'm interested in point 1 above, because I initially thought it made sense for an NSTextView to just work with the Find field, but I couldn't seem to get it working. That is what led me to wondering whether I could get at the string content in the NSTextView and search that instead. I'm happy to just use the inherent capabilities of NSTextField but I can't figure out what they are! The Text View is simply used as a place for the user to put any rich text and or images. Is there a way either to search or to get all of the plain text out from such a Text View? It's probably a simplistic question and I rather suspect that ultimately the answer is no! Ian. -- ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Strange Core Data save behaviour (required relationship nil... when it is set the line before saving)
Darn, I thought his problem had gone away, but I still get the failure to save from time to time (the probability of occurrence is pretty low though). I'm even setting the problematic relationship to nil before deleting the object, then calling -processPendingChanges, then saving the object (which will then cause other thread's MOCs to be updated via - mergeChangesFromContextDidSaveNotification. I currently don't understand the difference between the many cases that seem to work, and the case that then suddenly doesn't. Again, while the change can be introduced by a number of threads, only one MOC is changed (and saved) at a time, and this MOC is strictly associated with the thread. I need to spend more time researching this problem, but the issue seems to raise its head when I'm testing some 'quick fire' changes between types of my object B (where old B gets deleted, new B created and linked into the owning object A). I'm wondering if it's possible to have a change come in on the second thread, just as the change before it is being processed from the other thread, somehow leaving the second thread's MOC in an odd state, and unable to save. I'm pretty sure the Context Did Save Notifications and behaviour of -mergeChagnesFromContextDidSaveNotification are synchronous though, so should offer no opportunity for interleaving in my current test regime. In any case, there's certainly no locking on my part, and I've been assuming that changes propagating from an earlier change in another MOC (via - mergeChangesFromContextDidSaveNotification) would be atomic, or otherwise would automatically act correctly when a changed is attempted on an object that has been changed in another MOC. Should I be calling -[NSManagedObjectContext refreshObject:mergeChanges:] on any object in any MOC before I attempt to make any changes to it? I don't read anything suggesting this is necessary, though maybe it is safer if it gives the object a change to be fully updated from other MOCS (??). I'm clutching at straws a little here, I realise... no substitute for actually trying to grok the dynamics, but there's a lot about what actually happens when you do a - mergeChangesFromContextDidSaveNotification that remains opaque (to me). -- lwe On 2009-09-29, at 8:16 PM, Ben Trumbull wrote: On Sep 29, 2009, at 8:22 PM, Luke Evans wrote: Hello Ben. What happens if you add a call to -processPendingChanges in between #2 and #3 ? ... well then everything works wonderfully (oh joy!!) :-) OK. I need to get a proper mental picture of why this is needed in this case. I guess I was vaguely aware of this method from previous passes though the Core Data docs, but... - The method documentation itself doesn't _really_ suggest it may be essential in some cases. Rather, the talk is about getting the undo manager into step, and even then the statement is made that this is done by default at the end of the run loop. - deleteObject docs, or indeed the guide section on deleting (Creating and Deleting Managed Objects) makes no mention of a need to call this method - I had tried manually setting the old deleted objects 'back relationship' to nil, before deleting it, and before setting A's relationship to the new B. This hadn't worked, but was my attempt to keep the relationships consistent - at least in in the MOC that induced the change. It's tempting to just think that you should _always_ do a - processPendingChanges before a -save:, but I'd prefer to understand what's really happening here. It's not before the save. It's in between the deletion and the re- assignment of the relationship of the surviving object to a new object. The problem is reassigning the relationship before delete propagation runs. Delete propagation, as well as the change notifications and several other aspects of object graph change tracking are coalesced and run later. Calling processPendingChanges is one of those later times. The application event loop also calls it, which is the default timing. Executing a fetch, or a save will also call it. Manually setting the deleted object's relationship instead of calling processPendingChanges between steps #2 #3 should also work. I don't think anyone has cared enough to file a bug on this. - Ben If you have insights on the above, then that would be great. Regardless, you've just improved my humour by several degrees ;-) -- Luke On 2009-09-29, at 3:59 PM, Ben Trumbull wrote: Now, I have some code that changes the value of the 'B enumeration value' that A is using. This does the following: 1. Create a new instance of the B subentity that represents the value we want (in the same MOC as A) 2. Delete the old B object that A was pointing to, i.e. [moc deleteObject:B]; 3. Set A's to-one relationship to point to the new B object (and for good measure, set B's inverse relationship - though
Re: Extract plain text content from a Text View
On Oct 16, 2009, at 5:42 PM, Ian Piper wrote: The Text View is simply used as a place for the user to put any rich text and or images. Is there a way either to search or to get all of the plain text out from such a Text View? It's probably a simplistic question and I rather suspect that ultimately the answer is no! As others have already said, you can get the plain text by just sending the -string message to the NSTextStorage object. Charles ___ 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
UITextField formatting for IP Address
On desktop Cocoa I can put in a custom formatter on a textfield and get what I'm looking for. On iPhone, I can say I'm a bit confused as to the best way to handle this. Given a UITextField and my desire to have the user type in an IP address, it sounds like it could be simple, but I can't figure it out. Using - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString: (NSString *)string works fine if I'm assuming the user is simply typing in the text going forward. The problem is if a user edits the text field then they lose their place as I set the text. So my guess to this is that no I cannot do this (though I'm sure I've seen it on the iPhone), but would there be a good way to handle this properly? There will always be death and taxes; however, death doesn't get worse every year. -- Anonymous ___ 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: UITextField formatting for IP Address
Here is my code, btw. It works OK, but it still has the issue of
moving the cursor to the end. Perhaps there is no way to do this on
the iPhone - I just don't want to bang my head for hours.
- (void)formatForIP:(UITextField*)textField string:(NSString*)string
{
long long ip = [[string stringByReplacingOccurrencesOfString:@.
withString:@] longLongValue];
NSNumberFormatter* numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterNoStyle];
[numberFormatter setPositiveFormat:@###,###,###,###];
[numberFormatter setGroupingSize:3];
[numberFormatter setSecondaryGroupingSize:3];
[numberFormatter setGroupingSeparator:@.];
[numberFormatter setUsesGroupingSeparator:YES];
textField.text = [numberFormatter stringFromNumber:[NSNumber
numberWithLongLong:ip]];
[numberFormatter release];
}
- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range replacementString:
(NSString *)string
{
if (textField.tag == 1)
{
if ([textField.text length] == 15)
return NO;
else if ([textField.text length])
{
NSString* newString = [textField.text
stringByReplacingCharactersInRange:range withString:string];
[self formatForIP:textField string:newString];
return NO;
}
}
return YES;
}
On Oct 16, 2009, at 7:26 PM, Alex Kac wrote:
On desktop Cocoa I can put in a custom formatter on a textfield and
get what I'm looking for. On iPhone, I can say I'm a bit confused as
to the best way to handle this.
Given a UITextField and my desire to have the user type in an IP
address, it sounds like it could be simple, but I can't figure it out.
Using
- (BOOL)textField:(UITextField *)textField
shouldChangeCharactersInRange:(NSRange)range replacementString:
(NSString *)string
works fine if I'm assuming the user is simply typing in the text
going forward. The problem is if a user edits the text field then
they lose their place as I set the text.
So my guess to this is that no I cannot do this (though I'm sure
I've seen it on the iPhone), but would there be a good way to handle
this properly?
There will always be death and taxes; however, death doesn't get
worse every year.
-- Anonymous
Alex Kac - President and Founder
Web Information Solutions, Inc.
I am not young enough to know everything.
--Oscar Wilde
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Any way to see all AppleEvents being sent in system?
I've heard reports of a 16-bit overflow bug in AppleEvent replies that might be causing the horrible SPODs I'm seeing. However, I'd like to get an idea of how many AppleEvents are being sent on my system during normal use. Is there a utility that allows me to see every event as it's sent? Just log-style output is fine. TIA, Rick ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Any way to see all AppleEvents being sent in system?
On 10/16/09 5:57 PM, Rick Mann said: I've heard reports of a 16-bit overflow bug in AppleEvent replies that might be causing the horrible SPODs I'm seeing. However, I'd like to get an idea of how many AppleEvents are being sent on my system during normal use. Is there a utility that allows me to see every event as it's sent? Just log-style output is fine. AEDebugSends? http://developer.apple.com/mac/library/technotes/tn2004/tn2124.html#SECAE -- 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: Any way to see all AppleEvents being sent in system?
On Oct 16, 2009, at 18:33:38, Sean McBride wrote: On 10/16/09 5:57 PM, Rick Mann said: I've heard reports of a 16-bit overflow bug in AppleEvent replies that might be causing the horrible SPODs I'm seeing. However, I'd like to get an idea of how many AppleEvents are being sent on my system during normal use. Is there a utility that allows me to see every event as it's sent? Just log-style output is fine. AEDebugSends? http://developer.apple.com/mac/library/technotes/tn2004/tn2124.html#SECAE That seems to require a specific process to debug, and therefore seems like it would be only for that process. Is there something that will catch all sends across all processes? -- Rick ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Any way to see all AppleEvents being sent in system?
Are you seeing the spinner for every application or just one? If it's just one, you could use AEDebugReceives. /Developer/Applications/Performance Tools/Spin Control.app might also be of interest. ___ 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: Any way to see all AppleEvents being sent in system?
It often starts with one, then spreads to others. There is speculation online that that 65,535th event results in a long hang/timeout. I want to get an idea of how many events are really being sent during normal use (that is, not during heavily scripted use, etc). http://db.tidbits.com/article/10643 On Oct 16, 2009, at 18:42:21, Dave Keck wrote: Are you seeing the spinner for every application or just one? If it's just one, you could use AEDebugReceives. /Developer/Applications/Performance Tools/Spin Control.app might also be of interest. ___ 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
File Encryption / Decription
what is the best way to encrypt and then decrepit a file in Cocoa? ___ 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: File Encryption / Decription
On Oct 16, 2009, at 10:05 PM, Chunk 1978 wrote: what is the best way to encrypt and then decrepit a file in Cocoa? I suppose you could burn the encrypted file to a disk then neglect said disk. Bit rot would make the file quite decrepit. ;-) But seriously folks*, there are a few categories on NSData on cocoadev.com that can help. -- I.S. * I'm here all night. Remember to tip your waitresses. ___ 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: Slider with tag?
On 10/14/09 10:24 PM, Gabriel Zachmann said: Could someone please explain to me how I can present a little tag to the user that moves along with a slider's handle (above or below), in which I can give some feedback to the user about the current value of the slider? I'm afraid I couldn't find an example, but I think I have seen such a thing somewhere ... You have to do it yourself. You can create a borderless NSWindow for the 'little tag'. You can use knobRectFlipped to get the thumb's position. You'll probably also want to use addChildWindow:ordered: to keep your floating window linked to the slider's window. You can use an NSTimer to close the window after a short delay. -- 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: Slider with tag?
On Oct 16, 2009, at 10:33 PM, Sean McBride wrote: On 10/14/09 10:24 PM, Gabriel Zachmann said: Could someone please explain to me how I can present a little tag to the user that moves along with a slider's handle (above or below), in which I can give some feedback to the user about the current value of the slider? I'm afraid I couldn't find an example, but I think I have seen such a thing somewhere ... You have to do it yourself. ... MAAttachedWindow is a good starting point: http://mattgemmell.com/source -- 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: How to retrieve the font information from TrueType font file?
Yes, it is really strange feature, this is used internal. My application is distributed with bundles of document templates. These templates should be designed by your graphic designers before being distributed, using the limited fonts installed in the bundle. Anyway, user can use other fonts from the system and third parties. Your solution is good. At first, I think it is simple to list all the limited fonts in the plist file, and it is easy to enumerate these fonts. But, I think, when other font files are added to the bundle by other engineer, I will update my plist file at the same time. this solution seems unrobust. Thanks again for your feedback. On Fri, Oct 16, 2009 at 11:57 PM, Jens Alfke j...@mooseyard.com wrote: On Oct 16, 2009, at 3:31 AM, XiaoGang Li wrote: other uncontained fonts which come from the system or third party application will be invalid in my application. when the users use my application to draw text, only the fonts contained in the bundle should be valid. This is the backgroud of my question. I don't know what your applications does, but that seems like a really strange feature. I have a lot of fonts installed, and when I use an app I expect to be able to use them. If the app only let me use a couple of fonts that were bundled with it, I'd call that a bug. (Also, do you have permission to bundle these fonts? Most fonts can't be re-distributed without a commercial license from the owner.) After getting the font name from the font used by the user, need to check whether this font is valid, so, how to get the font information from my font files. Isn't the set of bundled fonts hard-coded? Just make a list of their names (maybe in a plist file) and read that. I think trying to extract the names out of the font files themselves would be much too difficult since there's no API for it. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Simulating webpage clicks
I have a Cocoa app with a WebKit browser. My app navigates to a default URL on startup. I need to parse the content of the default page, find specific links I am looking for, then simulate clicks on those links in the page just as if the user was clicking it normally - and I need to do all this in Objective-C without any JavaScript. Is there a way to do this using WebKit? Thanks, Chuck ___ 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
correctly Controlling Garbage Collection
I saw a couple posting regarding this when Garbage Collection was originally introduced, but have not seen any discussion since. I do not believe the issue was ever resolved. Our application uses Garbage Collection under 10.5 (and now 10.6). We have several custom views with custom mouse tracking while dragging (mouse click down event, move move events, then mouse up event). We track this information in order to implement a pencil drawing tool in our application. Normally this works smoothly. The tracking is done often enough so the pencil draws a smooth line. If the user moves his mouse VERY fast, the mouse move events are greater then a pixel across, and we draw a line from old point to the new point. This is acceptable for most case. We discovered during testing that is some special cases, the mouse moved events were not being tracked fast enough. This caused what should of been a smooth line (drawing pixel to pixel) to be drawn as a straight line (not enough mouse tracking). Using our development tools, we discovered this was due to garbage collection. Ever once in awhile, based on memory usage, the system does a deep garbage collection operation. If it happens when the pencil is being drawn, we get badly drawn lines. Looking at this problem, we could perform better memory management, so deep garbage collection does not happen that often. This reduces the problem, but can never eliminate it, since sooner or later the garbage clean operation must be done. So we thought the best thing would be to force a garbage collection operation at a time of our choosing. Normally, this occurs at Mouse up, after the user has finished his drawing. A split second of garbage collection then would be barely noticeable by the user. So, we looked for a call, and thanks to this list we found objc_collect (OBJC_EXHAUSTIVE_COLLECTION | OBJC_WAIT_UNTIL_DONE); . Unfortunately, this does not solve our problem. That call does not insure a garbage collection operation synchronously, nor shortly after one returns to the main event loops. It does seem to cause one a short time later, but by then the user might be drawing with the pen again. We saw that a couple other people complained about this call not doing what they expected, but this was a while back, and we have not seen any new discussions about it. Has anyone else conquered similar Garbage Collection issues? It would appear to me, that unless there are better controls then we now know about, this type of slow down issue would make Garbage Collection useless for any application that does animation or smooth mouse tracking. Thank you! Steve Sheets ___ 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
OK/Cancel buttons on NSColorPanel
I'm porting an app from Carbon to Cocoa. I notice that when I use the carbon function PickColor to get a color dialog, the dialog has OK and Cancel buttons, but when using NSColorPanel the dialog does not have those buttons. Is there a way to get OK and Cancel buttons in the Cocoa version of my code? -Kevin ___ 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
Sqlite and Core Data
These may have been asked before, if so just point me in the right direction. I'm trying to build what I hope is a relatively small program that will keep track of authors and books. I've got databases in Postgres and MySql, and I ported the data over to sqlite yesterday. Now I'm just fooling around at this point, and am trying to learn XCode. I tried building a couple of Core Data apps based on examples in one of the Cocoa for Dummies books, and like the ease of using Core Data. Can I use Core Data to access the sqlite database that I've created? Are there any files I need to add, or code I need to write? If I can't use Core Data to access sqlite, do I need to migrate the data to be a persistent store, and are there tools to do that? Xcode doesn't seem to like a straight XML export from sqlite, and tells me that it's the wrong type. I've tried using Google to find articles, but everything seems to be four or five years old. If there are any pointers to recent articles, it would be appreciated. Thanks for any help you can give. Tom Hart ___ 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: OK/Cancel buttons on NSColorPanel
On 17/10/2009, at 3:07 AM, Kevin Barnes wrote: I'm porting an app from Carbon to Cocoa. I notice that when I use the carbon function PickColor to get a color dialog, the dialog has OK and Cancel buttons, but when using NSColorPanel the dialog does not have those buttons. Is there a way to get OK and Cancel buttons in the Cocoa version of my code? NSColorPanel is very much a self-contained class that offers little customisation in itself (though you can add custom pickers to it). Its design is quite different from the old modal color picker in Carbon. Where possible, at those places in your interfaces that you need to pick a colour (e.g. a Color... button in a dialog, say), replace those with NSColorWells which will interact with the floating modeless color panel automatically. This will make your app much more standard as a Cocoa app rather than trying to emulate the old way of doing things. If you really have no option, note that NSColorPanel subclasses NSPanel, so it might be possible to run it modally or as a document modal sheet though I've never tried it so I don't know if it's possible. I see no built-in way to add OK/Cancel buttons but if you can persuade it to run modally in some fashion you'll probably be able to add these programatically to the panel. --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: Sqlite and Core Data
On 2009 Oct 16, at 19:43, Thomas Hart wrote: Can I use Core Data to access the sqlite database that I've created? Anything can be done, given infinite design and product-maintenance resources. Let me re-phrase your question: Question: Is there any chance that this might be a practical approach? Answer: No. If I can't use Core Data to access sqlite, do I need to migrate the data to be a persistent store, and are there tools to do that? You said that your databases are in Postgres and MySQL, and then later sqlite. You will need a library of functions to read these databases, extracting the records and their field values -- strings, numbers, etc. I've never used Postgres and MySQL on the Mac, but I have used the sqlite3 that ships in Mac OS X. You can call sqlite3 library functions to create, read, and write sqlite databases. However, sqlite and Core Data are not practically interoperable at any level lower than the records and their field values. ___ 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: File Encryption / Decription
On Oct 16, 2009, at 7:05 PM, Chunk 1978 wrote: what is the best way to encrypt and then decrepit a file in Cocoa? Look at CommonCrypto/CommonCryptor.h. It's a plain C API. Warning: Encryption is only useful if you know what you're doing. If you're planning to do anything serious (certainly anything you want other people to use) I highly recommend reading a good overview like Schneier and Ferguson's Practical Cryptography. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Simulating webpage clicks
On Oct 16, 2009, at 7:20 PM, Charles Burnstagger wrote: I need to parse the content of the default page, find specific links I am looking for, then simulate clicks on those links in the page just as if the user was clicking it normally - and I need to do all this in Objective-C without any JavaScript. Look at the DOM API (WebKit/DOMDocument.h, etc.) —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sqlite and Core Data
On Oct 16, 2009, at 7:43 PM, Thomas Hart wrote: Can I use Core Data to access the sqlite database that I've created? Are there any files I need to add, or code I need to write? Not directly. Core Data does use SQLite to store data, but it uses very specific conventions for names and relations, and it isn't capable of working with any database or table that it didn't create itself. It's not a generalized ORM, but an object persistence API that just happens to use a SQL database as a backing store. If I can't use Core Data to access sqlite, do I need to migrate the data to be a persistent store, and are there tools to do that? Yes; and not as far as I know. You'll need to write code that reads data from your existing SQLite database, and then adds it to your CoreData object model. SQLite's raw C API isn't too hard to use, and there are a couple of Cocoa libraries (like FMDB and QuickLite) that make working with it in a Cocoa app easier. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Extract plain text content from a Text View
On Oct 16, 2009, at 3:42 PM, Ian Piper wrote: The Text View is simply used as a place for the user to put any rich text and or images. Is there a way either to search or to get all of the plain text out from such a Text View? It's probably a simplistic question and I rather suspect that ultimately the answer is no! NSTextView (and its parent class NSText) have methods for doing find and replace, which is what the commands in the Find submenu are wired up to. They even select the target text, scroll to it and blink it for you. If that's too high level, just get the string property of the NSTextStorage and use NSString methods for searching for substrings. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UITextField formatting for IP Address
On 16 Oct 2009, at 17:54, Alex Kac wrote:
Here is my code, btw. It works OK, but it still has the issue of
moving the cursor to the end. Perhaps there is no way to do this on
the iPhone - I just don't want to bang my head for hours.
- (void)formatForIP:(UITextField*)textField string:(NSString*)string
{
long long ip = [[string stringByReplacingOccurrencesOfString:@.
withString:@] longLongValue];
NSNumberFormatter* numberFormatter = [[NSNumberFormatter alloc]
init];
[numberFormatter setNumberStyle:NSNumberFormatterNoStyle];
[numberFormatter setPositiveFormat:@###,###,###,###];
[numberFormatter setGroupingSize:3];
[numberFormatter setSecondaryGroupingSize:3];
[numberFormatter setGroupingSeparator:@.];
[numberFormatter setUsesGroupingSeparator:YES];
textField.text = [numberFormatter stringFromNumber:[NSNumber
numberWithLongLong:ip]];
[numberFormatter release];
}
This isn't a valid approach to formatting IP addresses - it considers
12.34.56.78 to be equal to 12.345.678, which isn't even a valid
address, let alone equivalent.
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Re: How to retrieve the font information from TrueType font file?
The third-party TrueType fonts that I own have a variety of
structures. Here are the ones I've found:
1. Single Fonts with the .ttf file extension have only a data fork,
and the name of the file seems to be the name of the font.
2. I've found two styles of font suitcase files:
a. One style has a resource fork that includes one or more 'FOND'
resources -- one per font. The names of the 'FOND' resources seem to
be the names of the font familes. They also include 'sfnt' resources,
the names of which are the individual fonts.
For example, Times New Roman has a single 'FOND' resource called
Times New Roman, and four 'sfnt' resources: Times New Roman, Times
New Roman Bold, Times New Roman Italic, and Times New Roman Bold
Italic.
b. The other style has a resource fork that includes a 'FOND'
resource for each individual font, with the 'FOND' resource names
being the names of the fonts. They also include 'sfnt' resources, but
the 'sfnt' resources do not have names. (They just have resource IDs
that match the resource IDs of the corresponding 'FOND' resources.)
For example, Stones Sans ITC TT contains three 'FOND' resources:
Stones Sans ITC TT-Bold, Stones Sans ITC TT-SemiIta, and Stones
Sans ITC TT-Semi.
It shouldn't be too hard to see whether one or more of these
categories apply to all of the fonts that might be bundled with your
application. If they do, you should be able to programmatically check
the 'FOND' and 'sfnt' resources of each font file and build a list of
your bundled fonts each time the app is launched. It's probably slower
than just reading in a single plist, but may be a bit more flexible.
Of course, font file formats are notoriously variable, so some odd
format might cause an error at some point in the future.
If you aren't familiar with getting resources out of resource forks,
the process goes a bit like this. (But don't try to use this code.
Read through the Resource Manager documentation to make sure you
understand what the routines are doing.)
NSString *filename; /* probably from -contentsOfDirectoryAtPath:error:
*/
FSRef theFsRef;
ResID theID;
ResType theType;
Str255 name; /* a Pascal string -- length byte followed by string --
typedef unsigned char Str255[256]; */
unsigned index;
Handle theResource;
[fileName getFSRef:theFsRef];
SInt16 refNum = FSOpenResFile(theFsRef,fsRdPerm); /* read-only, so
you don't accidentally change it */
unsigned resCount = Count1Resources('sfnt');
for (index = 1;index = resCount;index++) /* NOTE: not zero-based */
{
theResource = Get1IndResource('sfnt',index);
if (theResource)
{
HLock(theResource);
GetResInfo(theResource, theID, theType, name);
/* If it has a name, add the name to an array, or something. */
/* If it has no name, set a flag that tells you to run the */
/* same kind of loop on the 'FOND' resources. */
}
}
/* when all is done */
CloseResFile(refNum);
It should be fun if it doesn't get too crazy. Good luck.
--Mike Wright
On Oct 16, 2009, at 22:55 PM, XiaoGang Li andrew.mac...@gmail.com
wrote:
Yes, it is really strange feature, this is used internal. My
application is
distributed with bundles of document templates. These templates
should be
designed by your graphic designers before being distributed, using the
limited fonts installed in the bundle. Anyway, user can use other
fonts
from the system and third parties.
Your solution is good. At first, I think it is simple to list all the
limited fonts in the plist file, and it is easy to enumerate these
fonts.
But, I think, when other font files are added to the bundle by other
engineer, I will update my plist file at the same time. this
solution seems
unrobust.
Thanks again for your feedback.
On Fri, Oct 16, 2009 at 11:57 PM, Jens Alfke j...@mooseyard.com
wrote:
On Oct 16, 2009, at 3:31 AM, XiaoGang Li wrote:
other uncontained fonts which come from the system or third party
application will be invalid in my application. when the users use my
application to draw text, only the fonts contained in the bundle
should be
valid. This is the backgroud of my question.
I don't know what your applications does, but that seems like a
really
strange feature. I have a lot of fonts installed, and when I use an
app I
expect to be able to use them. If the app only let me use a couple
of fonts
that were bundled with it, I'd call that a bug.
(Also, do you have permission to bundle these fonts? Most fonts
can't be
re-distributed without a commercial license from the owner.)
After getting the font name from the font used by the user, need to
check whether this font is valid, so, how to get the font
information from
my font files.
Isn't the set of bundled fonts hard-coded? Just make a list of
their names
(maybe in a plist file) and read that. I think trying to
