I've been desperately trying to use NSRuleEditor for a while now, since it
presents exactly the type of interface I want to show to the users.
But I can't figure out how to properly get data out of it. I can configure
all of the delegate methods to build the interface, but then what?
The data
> Array Controllers etc. can be configured to monitor their context for
changes and automatically re-fetch when needed. So they should keep in sync
that way without any extra work.
>
It can? How?
I'm only aware of the prepares content flag, but that'll only load the data
into the controller when
On Sep 22, 2015, at 7:40 AM, Jim Thomason <j...@jimandkoka.com> wrote:
> >
> > The question is simple - is there a reasonable way to create two
> > NSArrayControllers, have them bound to an entity through CoreData, and
> keep
> > them in sync?
>
> One way
First, to be clear, I'm not actually trying to do this. I'm just curious
how it could be done. I cooked it up while working on other things.
The question is simple - is there a reasonable way to create two
NSArrayControllers, have them bound to an entity through CoreData, and keep
them in sync?
I'm doing some porting/updating work and came across an issue.
I have two objects - which we'll call Foo and FooType.
Every Foo must have a FooType, and every FooType is associated with
multiple Foos.
The FooType also has an image associated with it, and the Foo uses that
image exclusively.
So
This example is a little contrived, because I'm struggling with how to
phrase it properly. The answer to the question might be as simple as You
can't do that,, and I'm cool if it is, I just want to confirm I'm not
doing something stupid.
I have an array controller of mutable dictionaries. It has
Hi,
In my user interface, I can have the user edit a field on an object, and
behind the scenes this will trigger a cascade of other changes to other
objects. As a result, I don't just need to validate the value the user
typed in, I also need to validate all of the other changes that that single
Nope. The inverse is proxyFor. proxy points one way, proxyFor is the
reciprocal.
I'll see if I can boil it down to a small test case and post that.
-Jim...
On Wed, Aug 20, 2014 at 11:47 PM, Jerry Krinock je...@ieee.org wrote:
I understand the typos, Jim.
So, what is the Inverse
I have a set of relationships:
Foo.proxy Foo.proxyFor
1-1 mapping. The way that the data is structured, a Foo object may be a
proxy for another one. However, the proxy is not required, in which case
the original Foo object should be returned.
I'd tried to set this up by creating a custom
I have a set of relationships:
Foo.proxy Foo.proxyFor
That’s a head-scratcher, Jim. A relationship is not between properties.
A relationship is between objects,
Foo —— Bar
In some cases, probably yours, the objects may be of the same type…
Foo — Foo
I apologize, I was
Is there a good tutorial or set of examples out there for NSRuleEditor? I'm
quite interested in using the class, but the lack of documentation is
definitely a hindrance. I found a couple of light examples that I'm trying
to work through and reverse engineer the rest of the functionality, but
it's
Gang,
In my fighting with services, I'm trying a different approach and hence
have a different question - is there a way that I could craft a service
that reads in selected text, uses that to open and perform a web
connection, and then returns that data back to the calling app?
The trivially
to handle async net communication.
On Jan 11, 2013, at 11:59 AM, Jim Thomason wrote:
Gang,
In my fighting with services, I'm trying a different approach and hence
have a different question - is there a way that I could craft a service
that reads in selected text, uses that to open and perform
simple example use case to give. For the actual
code, I wouldn't be able to just do a synchronous request.
-Jim
On Fri, Jan 11, 2013 at 12:52 PM, Jens Alfke j...@mooseyard.com wrote:
On Jan 11, 2013, at 8:59 AM, Jim Thomason j...@jimandkoka.com wrote:
The issue is that my
Gang,
Unfortunately, this is a very vague question but I'm at a bit of a
loss and hoping someone could provide some general technique or
avenues to explore.
Apple recently rejected a new app of mine, with this explanation:
When saving a file, and reopening it by double-clicking the saved file
-saveDocument: has never been expected to do its work immediately. Instead,
you want to call:
-saveDocumentWithDelegate:didSaveSelector:contextInfo:
Then, when the delegate is called, spawn off your new MOC.
That's exactly what I needed. A little rewiring of the app to use the
delegate
Gang,
I've encountered an odd bug/issue/feature(?) in Lion and want to know
if there's a workaround available.
I have a multithreaded CoreData application. It does a lot of
calculations on the context, so it spawns off a separate thread and
creates a new ManagedObjectContext to do its work.
On Mon, May 30, 2011 at 10:45 AM, Vyacheslav Karamov
ubuntul...@yandex.ru wrote:
Hi All!
...
[task setLaunchPath:@/usr/bin/unzip];
NSArray * args = [NSArray arrayWithObjects:@-a , listsPath, @ -d ,
sharedPath, nil];
In addition to what others have said regarding spaces and such, when I
,
but man what a nuisance.
Implement any of this at your own risk, and be sure to understand the
consequences of doing it. This is only gonna work with a very narrow
focus.
-Jim
On 4 May 2011, at 22:46, Jim Thomason wrote:
I know this has been asked a bajillion times before, yet here we
All,
I've written a small-ish mostly background clipboard/macro type
utility and was wondering if anyone would be interested in helping me
beta test/provide feedback.
It's simply a way to store and insert frequently used snippets of text
in a very fast manner. I wanted something to pop in, give
I know this has been asked a bajillion times before, yet here we are.
So it turns out that my simple little applescript to copy in from
another app was ineffective. Lots more digging around led me to create
this:
tell application Xcode
activate
tell application System Events
and without knowing what others have said, I can surmise that their replies
where no less perplexed with the question but Why?
This gloriously ugly hack isn't the correct why question - the
correct why question is why do I even need to do it?
I want to be able to copy the current selection
I've been working on implementing a new service in my app. It's coming
along, but there's one thing I haven't been able to discern in the
docs -
Can I provide a service with optional input?
I want the user to be able to call the service with a text string
input, but it's also reasonable to call
This is a braindead simple question, but I couldn't find a definitive reference.
Is it better to register an undo action inside or outside of a group?
i.e., is this preferred:
[someUndoManager beginUndoGrouping];
//do interesting things
//end group first
[someUndoManager endUndoGrouping];
I'm finally trying to do my first CoreData migration using the new
style 10.5 built-in migration tools. I'd abandoned my ad-hoc Tiger one
a while back and finally needed to migrate.
I'm building on Snow Leopard, and bugs and glitches aside (such as the
workaround for migration for Leopard
I'm utterly stumped.
I haven't managed to boil this down to a succinct test case yet. It
only intermittently appears, basically, after I end up doing a lot
of date calculations on a separate thread. For some nebulous value of
a lot.
The gyst is this - on occasion, NSCalendar's
Is this method called from different threads? NSCalendar is
thread-unsafe (not to be shared across threads):
Gaaah. Yes, that's exactly it. I'm glad I tracked the issues with
gmtCalendar and posted the method.
I re-wrote it to use the threadDictionary instead of a static and all
my problems
Well, no. 'error' is an OUTPUT ONLY pointer. Specifically, on entry:
1. 'error' is either NULL (no error information should be returned), or a
valid address to return a NSError* into, if an error occurs
2. '*error' is trash (-- subtle, but important)
On output:
1. If 'error' was NULL,
This is an extremely odd bug I just encountered, and it appears to be
in NSPersistentDocument.
Here's the deal - my coredata app implements
writeToURL:ofType:forSaveOperation:originalContentsURL:error: so I can
do some final sanity checks on my data before saving. If the checks
succeed, we bubble
On Thu, Oct 7, 2010 at 5:14 PM, Rick Mann rm...@latencyzero.com wrote:
I have an NSPersistentDocument-based app. I need to implement a setNeedsFoo
method on the managed object that causes the receiver to be placed into an
NSMutableSet on the document, for later foo processing. As part of
I'm utterly confused by what I thought would be something simple.
I have a custom view that I want to establish a few tracking areas
for. So I go and create several NSTrackingAreas and add them to the
view. All looks well. But later on, when my mouse events fire off,
they're associated with the
I'm refactoring and updating a lot of my older code, and one of the
things I'm finally looking into is declaring things as properties.
But...what's the point? I've been trying to read up on the subject and
have found a lot of posts and discussion about the subject, but very
little of it seems to
It shouldn't deadlock. The doc for -lock says: If you lock (or successfully
tryLock) a managed object context, the thread in which the lock call is made
must have a retain until it invokes unlock. If you do not properly retain a
context in a multi-threaded environment, this will result in
I'm stumped and hoping that there's some easy solution that I just
haven't dug up yet. Yes, this is another coredata multithreading
question.
Anyway, in my application the user types in data and fills out forms
and such. It's all tied into CoreData via bindings. Nothing exciting.
But - I've also
On Wed, Oct 14, 2009 at 2:25 PM, Ben Trumbull trumb...@apple.com wrote:
The short description is this - I have a document based CoreData app.
I can carefully craft a set of data. I then open the document, select
a particular record, and do a Save As. This works fine. But when I
select a second
Figured I'd address all the comments inline in one batch, and then
point out what I came up with. An almost viable solution is up top for
reference purposes, and a seemingly better one is towards the bottom.
Hm, do operations using primitive accessors also get registered on the undo
stack? If
I've got a CoreData document based application, and I'm trying to undo
my object creation in a single step.
Here's the issue - I'm storing an ordered index on my entities so I
can keep track of the order of creation. To do this, upon object
creation, I yank out the highest order parameter for my
First off, I'll say that I'm trying to maintain Tiger compatibility in
my app, so if anyone tries to duplicate this on Leopard or Snow
Leopard, they may not have any luck.
I have an NSArrayController bound to a set of objects in an SQLite
CoreData store. The NSArrayController by default has
I'm writing a 64-bit only app. Any pointers on where I can find info on
obfuscation?
http://unsanity.org/archives/000101.php
In addition to that, don't even think about doing your checks in
objective-C. It's just too easy to hack around, and if somebody's
dedicated to cracking you, it's an
I've been fighting with NSTreeController for a couple of days now and
have gotten nowhere.
I have a hierarchy of disparate objects. It's pretty simple - Class A
has many Class B. That's it. I'd like to display it in an OutlineView.
I don't care about adding in additional Class A (Parent) objects,
Howdy all,
Hopefully this is a ridiculously simple question with a ridiculously
simple answer, but I just haven't been able to find it.
I have a document based CoreData app and I want to change the store
type of the file. So it previously saved as XML, and I now want those
docs to save as
I just can't find a solution for this. Basically, I need a pre-delete
hook in CoreData but can't seem to find one.
Here's the deal - I have a Foo object which has many Bar objects. Foo
also has a property that's calculated off of the various values in
Bar.
So Bar has many custom setKey methods
A lot of people tend to link in webkit and layout a printed report using
html and css. It's somewhat eqasier than standard web dev since you know
that only webkit will be displaying your layout. No need for cross browser
compatability.
I use that aqpproach for one of my apps and it works well
Here's a peculiar little case that I hope is easy to resolve.
Here's the case I ran into:
I had bound an NSTextField to an attribute of an object. The interface
at that point implied that the user could update the value in that
field, then immediately click a button to perform an action. The
Wow. I just spent about an hour and a half debugging this, since it's
rather nefarious. Now I need to go back to all sorts of existing data
and correct for it, too. :-(
Anyway, I'm just posting to the list as an informational thing just in
case anybody else runs into a similar issue. I wasn't
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