Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
Sample Applications/CoreRecipesApp/MainApplication/Sources/Widgets/ManagedObjectUIContainer.m
/* |
File: ManagedObjectUIContainer.m |
Abstract: Generic object container for working with the settings |
information for recipes, encapsulating a NIB and managed object context |
used to edit the information. |
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple |
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following terms, and your use, installation, modification or |
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install, modify or redistribute this Apple software. |
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"Apple Software"), to use, reproduce, modify and redistribute the Apple |
Software, with or without modifications, in source and/or binary forms; |
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text and disclaimers in all such redistributions of the Apple Software. |
Neither the name, trademarks, service marks or logos of Apple Computer, |
Inc. may be used to endorse or promote products derived from the Apple |
Software without specific prior written permission from Apple. Except |
as expressly stated in this notice, no other rights or licenses, express |
or implied, are granted by Apple herein, including but not limited to |
any patent rights that may be infringed by your derivative works or by |
other works in which the Apple Software may be incorporated. |
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND |
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Copyright © 2005 Apple Computer, Inc., All Rights Reserved |
*/ |
#import "ManagedObjectUIContainer.h" |
@implementation ManagedObjectUIContainer |
/** |
Initializes the container class with the specified context, based on the |
name of the class calling it. This calls through to the method listed |
below. |
*/ |
- initWithManagedObjectContext:(NSManagedObjectContext *)context { |
return [self initWithManagedObjectContext:context nibName:NSStringFromClass([self class])]; |
} |
/** |
Initializes the container class with the specified context and using the |
specified Nib class name. Here we simply initialize the instance and retain |
the information passed in for later use. |
*/ |
- initWithManagedObjectContext:(NSManagedObjectContext *)context nibName:(NSString *)name { |
self = [super init]; |
NSAssert(context != nil, @"context must be non-nil"); |
if (self != nil) { |
managedObjectContext = [context retain]; |
nibName = [name retain]; |
} |
return self; |
} |
/** |
Overridden dealloc method, here just to release the information stored in |
the initialization methods. |
*/ |
- (void)dealloc { |
[managedObjectContext release]; |
[containerBox release]; |
[nibName release]; |
[super dealloc]; |
} |
/** |
Accessor for the managed object context for the container. This method will |
always return a valid context since the initialization will assert if done |
with a nil context. |
*/ |
- (NSManagedObjectContext *)manangedObjectContext { |
return managedObjectContext; |
} |
/** |
Returns the container box for the view. This implementation will lazily |
instantiate the container box the first time it is accessed, using the Nib |
name passed in during the initialization. |
*/ |
- (NSBox *)containerBox { |
if (containerBox == nil) { |
[NSBundle loadNibNamed:[self nibName] owner:self]; |
NSAssert2 (containerBox != nil, @"Failed to load nib %@ for %@", [self nibName], self); |
if ([self autoDisposeOfWindowOnNIBLoad]) { |
NSWindow *window = [containerBox window]; |
[containerBox retain]; |
[containerBox removeFromSuperviewWithoutNeedingDisplay]; |
[window close]; |
} |
} |
return containerBox; |
} |
/** |
Returns a boolean value specifying if this window should close the window |
when the Nib is loaded (removing the container view from the superview). |
This always returns YES. |
*/ |
- (BOOL)autoDisposeOfWindowOnNIBLoad { |
return YES; |
} |
/** |
Returns the name of the Nib to instantiate as the container box for the |
view. This is done to allow us to instantiate many different kinds of |
views with one base class. |
*/ |
- (NSString *)nibName { |
return nibName; |
} |
@end |
Copyright © 2005 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2005-06-01