/* * 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