ResKnife/Cocoa/Classes/ResourceDataSource.m
2002-02-23 03:40:24 +00:00

123 lines
4.0 KiB
Objective-C

#import "ResourceDataSource.h"
#import "ResourceDocument.h"
#import "Resource.h"
NSString *DataSourceWillAddResourceNotification = @"DataSourceWillAddResourceNotification";
NSString *DataSourceDidAddResourceNotification = @"DataSourceDidAddResourceNotification";
NSString *DataSourceWillRemoveResourceNotification = @"DataSourceWillRemoveResourceNotification";
NSString *DataSourceDidRemoveResourceNotification = @"DataSourceDidRemoveResourceNotification";
@implementation ResourceDataSource
- (id)init
{
self = [super init];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(resourceDidChange:) name:ResourceDidChangeNotification object:nil];
return self;
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
- (NSWindow *)window
{
return window;
}
- (NSArray *)resources
{
return resources;
}
- (void)setResources:(NSMutableArray *)newResources
{
[resources autorelease];
resources = [newResources retain];
[outlineView reloadData];
}
- (void)addResource:(Resource *)resource
{
NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:self, @"DataSource", resource, @"Resource", nil];
[[NSNotificationCenter defaultCenter] postNotificationName:DataSourceWillAddResourceNotification object:dictionary];
// it seems very inefficient to reload the entire data source when just adding/removing one item
// for large resource files, the data source gets reloaded hundereds of times upon load
[resources addObject:resource];
[outlineView reloadData];
[[NSNotificationCenter defaultCenter] postNotificationName:DataSourceDidAddResourceNotification object:dictionary];
[[document undoManager] registerUndoWithTarget:self selector:@selector(removeResource:) object:resource]; // undo action name set by calling function
}
- (void)removeResource:(Resource *)resource
{
NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:self, @"DataSource", resource, @"Resource", nil];
[[NSNotificationCenter defaultCenter] postNotificationName:DataSourceWillRemoveResourceNotification object:dictionary];
// see comments in addResource: about inefficiency of reloadData
[resources removeObjectIdenticalTo:resource];
[outlineView reloadData];
[[NSNotificationCenter defaultCenter] postNotificationName:DataSourceDidRemoveResourceNotification object:dictionary];
[[document undoManager] registerUndoWithTarget:self selector:@selector(addResource:) object:resource]; // NB: I hope the undo manager retains the resource, because it just got deleted :) - undo action name set by calling function
}
- (void)resourceDidChange:(NSNotification *)notification
{
// reload the data for the changed resource
[outlineView reloadItem:[notification object]];
}
/* Data source protocol implementation */
- (id)outlineView:(NSOutlineView *)outlineView child:(int)index ofItem:(id)item
{
#pragma unused( outlineView, item )
return [resources objectAtIndex:index];
}
- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
{
#pragma unused( outlineView, item )
return NO;
}
- (int)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item
{
#pragma unused( outlineView, item )
return [resources count];
}
- (id)outlineView:(NSOutlineView *)outlineView objectValueForTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
{
#pragma unused( outlineView )
return [item valueForKey:[tableColumn identifier]];
}
- (void)outlineView:(NSOutlineView *)outlineView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn byItem:(id)item
{
#pragma unused( outlineView )
NSString *identifier = [tableColumn identifier];
[item takeValue:object forKey:identifier];
}
/* ACCESSORS */
- (Resource *)resourceNamed:(NSString *)name ofType:(NSString *)type
{
Resource *resource;
NSEnumerator *enumerator = [resources objectEnumerator];
while( resource = [enumerator nextObject] )
{
if( [[resource name] isEqualToString:name] && [[resource type] isEqualToString:type] )
return resource;
}
return nil;
}
@end