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73 lines
2.8 KiB
Objective-C
73 lines
2.8 KiB
Objective-C
//
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// NuTemplateElement.h
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// ResKnife (PB2)
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//
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// Created by Uli Kusterer on Mon Aug 04 2003.
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// Copyright (c) 2003 M. Uli Kusterer. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "NuTemplateStream.h"
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/*
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This is the base class for all template field types. Subclass this to
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define a field type of your own.
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Note that subclasses *must* implement the NSCopying protocol, which means
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if you have instance variables, you must provide your own copyWithZone:
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implementation that calls through to the superclass and then copies its
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own variables' values (or retains references to them, if that is more
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effective and the object in question isn't mutable).
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*/
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@interface NuTemplateElement : NSObject <NSCopying>
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{
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NSString* type; // Type code of this item (4 chars if from TMPL resource, but we may support longer types later).
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NSString* label; // Label ("name") of this field.
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NSMutableArray* containing; // The NSMutableArray* of the template field containing us, or the template window's list.
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}
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+(id) elementForType: (NSString*)type withLabel: (NSString*)label;
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-(id) initForType: (NSString*)type withLabel: (NSString*)label;
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// Accessors:
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-(void) setType:(NSString*)t;
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-(NSString*) type;
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-(void) setLabel:(NSString*)l;
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-(NSString*) label;
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-(void) setContaining: (NSMutableArray*)arr;
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-(NSMutableArray*) containing;
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-(NSString*) stringValue; // Used to display your data in the list.
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// Items that have sub-items (like LSTB, LSTZ, LSTC and other lists) should implement these:
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-(int) subElementCount;
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-(NuTemplateElement*) subElementAtIndex: (int)n;
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-(void) readSubElementsFrom: (NuTemplateStream*)stream;
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// This is called on an item of your class when displaying resource data using a template that uses your field:
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-(void) readDataFrom: (NuTemplateStream*)stream;
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// This is used to instantiate copies of the item from the template for storing data of the resource. A copy created with this is then sent readDataFrom:.
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-(id) copyWithZone: (NSZone*)zone;
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// The following are used to write resource data back out:
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-(unsigned int) sizeOnDisk;
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-(void) writeDataTo: (NuTemplateStream*)stream;
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/* Apart from these messages, a NuTemplateElement may also implement the IBActions for
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the standard edit commands (cut, copy, paste, clear). When an element is selected,
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the template editor will forward any calls to these items to the element, if it
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implements them, and it will automatically enable the appropriate menu items. It
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will also forward validateMenuItem: for the Paste menu item to the element.
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The showCreateResourceSheet: action will also be forwarded to elements by the
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template editor. Use this to allow creating new list items or for similar
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purposes ("Create New Resource..." is renamed to "Create List Entry" while the
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template editor is key). */
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@end
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