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/*
* Copyright (c) 2007 Dave Dribin
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#import "DDHidUsageTables.h"
@implementation DDHidUsageTables
static DDHidUsageTables * sStandardUsageTables = nil;
+ (DDHidUsageTables *) standardUsageTables;
{
if (sStandardUsageTables == nil)
{
NSBundle * myBundle = [NSBundle bundleForClass: self];
NSString * usageTablesPath =
[myBundle pathForResource: @"DDHidStandardUsages" ofType: @"plist"];
NSDictionary * lookupTables =
[NSDictionary dictionaryWithContentsOfFile: usageTablesPath];
sStandardUsageTables =
[[DDHidUsageTables alloc] initWithLookupTables: lookupTables];
[sStandardUsageTables retain];
}
return sStandardUsageTables;
}
- (id) initWithLookupTables: (NSDictionary *) lookupTables;
{
self = [super init];
if (self == nil)
return nil;
mLookupTables = [lookupTables retain];
return self;
}
- (NSString *) descriptionForUsagePage: (unsigned) usagePage
usage: (unsigned) usage
{
NSString * usagePageString = [NSString stringWithFormat: @"%u", usagePage];
NSString * usageString = [NSString stringWithFormat: @"%u", usage];
// NSNumber * usagePageNumber = [NSNumber numberWithUnsignedInt: usagePage];
NSDictionary * usagePageLookup = [mLookupTables objectForKey: usagePageString];
if (usagePageLookup == nil)
return @"Unknown usage page";
NSDictionary * usageLookup = [usagePageLookup objectForKey: @"usages"];
NSString * description = [usageLookup objectForKey: usageString];
if (description != nil)
return description;
NSString * defaultUsage = [usagePageLookup objectForKey: @"default"];
if (defaultUsage != nil)
{
description = [NSString stringWithFormat: defaultUsage, usage];
return description;
}
return @"Unknown usage";
}
@end
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