PGNode.h

/* Copyright © 2007-2009, The Sequential Project
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      documentation and/or other materials provided with the distribution.
    * Neither the name of the the Sequential Project nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// Models
@class PGDocument;
#import "PGNodeParenting.h"
#import "PGResourceAdapting.h"
@class PGResourceAdapter;
@class PGContainerAdapter;
@class PGResourceIdentifier;
@class PGDisplayableIdentifier;
@class PGDataProvider;
@class PGBookmark;

// Other Sources
#import "PGGeometryTypes.h"

extern NSString *const PGNodeLoadingDidProgressNotification;
extern NSString *const PGNodeReadyForViewingNotification;

extern NSString *const PGImageRepKey;

extern NSString *const PGNodeErrorDomain;
enum {
	PGGenericError  = 1,
	PGPasswordError = 2,
};

typedef NSUInteger PGNodeStatus;

@interface PGNode : NSObject <PGResourceAdapting>
{
	@private
	id<PGNodeParenting> _parent;
	PGDisplayableIdentifier *_identifier;

	PGDataProvider *_dataProvider;
	NSMutableArray *_potentialAdapters;
	PGResourceAdapter *_adapter;
	PGNodeStatus _status;

	BOOL _viewable;
	NSMenuItem *_menuItem;
	BOOL _allowMenuItemUpdates;
}

+ (NSArray *)pasteboardTypes;

- (id)initWithParent:(id<PGNodeParenting>)parent identifier:(PGDisplayableIdentifier *)ident;
@property(readonly) PGDisplayableIdentifier *identifier;

@property(retain) PGDataProvider *dataProvider;
- (void)reload;
@property(readonly) PGResourceAdapter *resourceAdapter;
- (void)loadFinishedForAdapter:(PGResourceAdapter *)adapter;
- (void)fallbackFromFailedAdapter:(PGResourceAdapter *)adapter;

@property(readonly) NSImage *thumbnail;
@property(readonly) BOOL isViewable;
@property(readonly) PGNode *viewableAncestor;
@property(readonly) NSMenuItem *menuItem;
@property(readonly) BOOL canBookmark;
@property(readonly) PGBookmark *bookmark;

- (void)becomeViewed;
- (void)readIfNecessary;
- (void)readFinishedWithImageRep:(NSImageRep *)aRep;

- (void)removeFromDocument;
- (void)detachFromTree;
- (NSComparisonResult)compare:(PGNode *)node; // Uses the document's sort mode.
- (BOOL)writeToPasteboard:(NSPasteboard *)pboard types:(NSArray *)types;
- (void)addToMenu:(NSMenu *)menu flatten:(BOOL)flatten;

- (PGNode *)ancestorThatIsChildOfNode:(PGNode *)aNode;
- (BOOL)isDescendantOfNode:(PGNode *)aNode;

- (void)identifierIconDidChange:(NSNotification *)aNotif;
- (void)identifierDisplayNameDidChange:(NSNotification *)aNotif;

- (void)noteIsViewableDidChange;

@end