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// UKApplicationEnumerator.m
// Shovel
// Created by Uli Kusterer on Wed Mar 31 2004.
// Copyright (c) 2004 Uli Kusterer.
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source
// distribution.
#import "UKApplicationEnumerator.h"
#import <AppKit/AppKit.h>
OSStatus (*LSCopyAllApplicationURLs)( NSArray* *theList );
@implementation UKApplicationEnumerator
-(id) init
self = [super init];
if( !self )
return nil;
// Try Spotlight first:
Class UKMetadataQuery = NSClassFromString(@"NSMetadataQuery");
query = [[UKMetadataQuery alloc] init];
if( query )
[query setDelegate: self];
[query setPredicate: [NSPredicate predicateWithFormat:@"kMDItemContentTypeTree == ''"]];
//[query setSearchScopes: [NSArray arrayWithObjects: NSMetadataQueryLocalComputerScope, nil]];
[[NSNotificationCenter defaultCenter] addObserver: self selector:@selector(metadataQueryGatheringProgress:) name: NSMetadataQueryGatheringProgressNotification object:query];
[[NSNotificationCenter defaultCenter] addObserver: self selector:@selector(metadataQueryGatheringProgress:) name: NSMetadataQueryDidStartGatheringNotification object:query];
[[NSNotificationCenter defaultCenter] addObserver: self selector:@selector(metadataQueryDidFinishGathering:) name: NSMetadataQueryDidFinishGatheringNotification object:query];
appsArray = [[NSMutableArray alloc] init];
appsEnny = [[appsArray objectEnumerator] retain];
currIndex = 0;
currIndexInCache = 0;
if( [query startQuery] )
[[NSRunLoop currentRunLoop] runUntilDate: [NSDate distantPast]];
query = nil; // Fall through to LS call.
// Then try Launch Services private call:
CFBundleRef theBundle = CFBundleGetBundleWithIdentifier( CFSTR("") );
LSCopyAllApplicationURLs = CFBundleGetFunctionPointerForName( theBundle, CFSTR("_LSCopyAllApplicationURLs") );
if( !query && LSCopyAllApplicationURLs )
LSCopyAllApplicationURLs( &appsArray );
appsEnny = [[appsArray objectEnumerator] retain];
currIndex = [appsArray count];
else if( !query ) // Fail and let caller cope with this mess:
[self release];
return nil;
return self;
-(void) dealloc
[[NSNotificationCenter defaultCenter] removeObserver: self];
[query release];
[appsEnny release];
[appsArray release];
[super dealloc];
-(NSString*) nextObject
while( currIndexInCache >= currIndex && query ) // Not enough items in array and query not finished?
[[NSRunLoop currentRunLoop] runUntilDate: [NSDate distantPast]]; // Otherwise process events, which makes sure that NSMetadataQuery can send us our notifications.
if( !query && currIndexInCache >= currIndex ) // Query has returned all results and we're out of cached and uncached indexes?
return nil;
currApp = [[appsArray objectAtIndex: currIndexInCache] path];
return currApp;
-(NSDictionary*) fileAttributes
return [[NSFileManager defaultManager] fileAttributesAtPath: currApp traverseLink: NO];
-(void) skipDescendents
// Dummied out.
-(void) metadataQueryGatheringProgress: (NSNotification*)notif
int numResults = [query resultCount];
//NSLog( @"Query progressing (%d results)...", numResults );
while( currIndex < numResults )
NSObject* mdi = [query resultAtIndex: currIndex];
NSString* path = [mdi valueForKey: (NSString*) kMDItemPath];
[(NSMutableArray*)appsArray addObject: [NSURL fileURLWithPath: path]];
//NSLog( @"\tQuery processed (%d results)...", numResults );
-(void) metadataQueryDidFinishGathering: (NSNotification*)notif
[query disableUpdates];
int numResults = [query resultCount];
//NSLog( @"Query finished (%d results).", numResults );
if( currIndex < numResults )
[self metadataQueryGatheringProgress: notif]; // Process the last remaining items.
[query stopQuery];
[query autorelease];
query = nil;
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