/*****************************************************************************
* AppleRemote.m
* AppleRemote
* $Id: AppleRemote.m 18683 2007-02-02 09:12:37Z fkuehne $
*
* Created by Martin Kahr on 11.03.06 under a MIT-style license.
* Copyright (c) 2006 martinkahr.com. All rights reserved.
*
* 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.
*
*****************************************************************************
*
* Note that changes made by any members or contributors of the VideoLAN team
* (i.e. changes that were exclusively checked in to one of VideoLAN's source code
* repositories) are licensed under the GNU General Public License version 2,
* or (at your option) any later version.
* Thus, the following statements apply to our changes:
*
* Copyright (C) 2006-2007 the VideoLAN team
* Authors: Eric Petit <titer@m0k.org>
* Felix Kühne <fkuehne at videolan dot org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#import "AppleRemote.h"
const char* AppleRemoteDeviceName = "AppleIRController";
const int REMOTE_SWITCH_COOKIE=19;
const NSTimeInterval DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE=0.35;
const NSTimeInterval HOLD_RECOGNITION_TIME_INTERVAL=0.4;
@implementation AppleRemote
#pragma public interface
- (id) init {
if ( self = [super init] ) {
openInExclusiveMode = YES;
queue = NULL;
hidDeviceInterface = NULL;
cookieToButtonMapping = [[NSMutableDictionary alloc] init];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Plus] forKey:@"14_12_11_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonVolume_Minus] forKey:@"14_13_11_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu] forKey:@"14_7_6_14_7_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay] forKey:@"14_8_6_14_8_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight] forKey:@"14_9_6_14_9_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft] forKey:@"14_10_6_14_10_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonRight_Hold] forKey:@"14_6_4_2_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonLeft_Hold] forKey:@"14_6_3_2_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonMenu_Hold] forKey:@"14_6_14_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteButtonPlay_Sleep] forKey:@"18_14_6_18_14_6_"];
[cookieToButtonMapping setObject:[NSNumber numberWithInt:kRemoteControl_Switched] forKey:@"19_"];
/* defaults */
[self setSimulatesPlusMinusHold: YES];
maxClickTimeDifference = DEFAULT_MAXIMUM_CLICK_TIME_DIFFERENCE;
}
return self;
}
- (void) dealloc {
[self stopListening:self];
[cookieToButtonMapping release];
[super dealloc];
}
/* this was added by the VideoLAN team to ensure Leopard-compatibility and is VLC-only */
#if GC_ENABLED
- (void)finalize
{
[self stopListening: self];
[super finalize];
}
#endif
- (int) remoteId {
return remoteId;
}
- (BOOL) isRemoteAvailable {
io_object_t hidDevice = [self findAppleRemoteDevice];
if (hidDevice != 0) {
IOObjectRelease(hidDevice);
return YES;
} else {
return NO;
}
}
- (BOOL) isListeningToRemote {
return (hidDeviceInterface != NULL && allCookies != NULL && queue != NULL);
}
- (void) setListeningToRemote: (BOOL) value {
if (value == NO) {
[self stopListening:self];
} else {
[self startListening:self];
}
}
/* Delegates are not retained!
* http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/CommunicatingWithObjects/chapter_6_section_4.html
* Delegating objects do not (and should not) retain their delegates.
* However, clients of delegating objects (applications, usually) are responsible for ensuring that their delegates are around
* to receive delegation messages. To do this, they may have to retain the delegate. */
- (void) setDelegate: (id) _delegate {
if (_delegate && [_delegate respondsToSelector:@selector(appleRemoteButton:pressedDown:clickCount:)]==NO) return;
delegate = _delegate;
}
- (id) delegate {
return delegate;
}
- (BOOL) isOpenInExclusiveMode {
return openInExclusiveMode;
}
- (void) setOpenInExclusiveMode: (BOOL) value {
openInExclusiveMode = value;
}
- (BOOL) clickCountingEnabled {
return clickCountEnabledButtons != 0;
}
- (void) setClickCountingEnabled: (BOOL) value {
if (value) {
[self setClickCountEnabledButtons: kRemoteButtonVolume_Plus | kRemoteButtonVolume_Minus | kRemoteButtonPlay | kRemoteButtonLeft | kRemoteButtonRight | kRemoteButtonMenu];
} else {
[self setClickCountEnabledButtons: 0];
}
}
- (unsigned int) clickCountEnabledButtons {
return clickCountEnabledButtons;
}
- (void) setClickCountEnabledButtons: (unsigned int)value {
clickCountEnabledButtons = value;
}
- (NSTimeInterval) maximumClickCountTimeDifference {
return maxClickTimeDifference;
}
- (void) setMaximumClickCountTimeDifference: (NSTimeInterval) timeDiff {
maxClickTimeDifference = timeDiff;
}
- (BOOL) processesBacklog {
return processesBacklog;
}
- (void) setProcessesBacklog: (BOOL) value {
processesBacklog = value;
}
- (BOOL) listeningOnAppActivate {
id appDelegate = [NSApp delegate];
return (appDelegate!=nil && [appDelegate isKindOfClass: [AppleRemoteApplicationDelegate class]]);
}
- (void) setListeningOnAppActivate: (BOOL) value {
if (value) {
if ([self listeningOnAppActivate]) return;
AppleRemoteApplicationDelegate* appDelegate = [[AppleRemoteApplicationDelegate alloc] initWithApplicationDelegate: [NSApp delegate]];
/* NSApp does not retain its delegate therefore we keep retain count on 1 */
[NSApp setDelegate: appDelegate];
} else {
if ([self listeningOnAppActivate]==NO) return;
AppleRemoteApplicationDelegate* appDelegate = (AppleRemoteApplicationDelegate*)[NSApp delegate];
id previousAppDelegate = [appDelegate applicationDelegate];
[NSApp setDelegate: previousAppDelegate];
[appDelegate release];
}
}
- (BOOL) simulatesPlusMinusHold {
return simulatePlusMinusHold;
}
- (void) setSimulatesPlusMinusHold: (BOOL) value {
simulatePlusMinusHold = value;
}
- (IBAction) startListening: (id) sender {
if ([self isListeningToRemote]) return;
io_object_t hidDevice = [self findAppleRemoteDevice];
if (hidDevice == 0) return;
if ([self createInterfaceForDevice:hidDevice] == NULL) {
goto error;
}
if ([self initializeCookies]==NO) {
goto error;
}
if ([self openDevice]==NO) {
goto error;
}
goto cleanup;
error:
[self stopListening:self];
cleanup:
IOObjectRelease(hidDevice);
}
- (IBAction) stopListening: (id) sender {
if (queue != NULL) {
(*queue)->stop(queue);
//dispose of queue
(*queue)->dispose(queue);
//release the queue we allocated
(*queue)->Release(queue);
queue = NULL;
}
if (allCookies != nil) {
[allCookies autorelease];
allCookies = nil;
}
if (hidDeviceInterface != NULL) {
//close the device
(*hidDeviceInterface)->close(hidDeviceInterface);
//release the interface
(*hidDeviceInterface)->Release(hidDeviceInterface);
hidDeviceInterface = NULL;
}
}
@end
@implementation AppleRemote (Singleton)
static AppleRemote* sharedInstance=nil;
+ (AppleRemote*) sharedRemote {
@synchronized(self) {
if (sharedInstance == nil) {
sharedInstance = [[self alloc] init];
}
}
return sharedInstance;
}
+ (id)allocWithZone:(NSZone *)zone {
@synchronized(self) {
if (sharedInstance == nil) {
return [super allocWithZone:zone];
}
}
return sharedInstance;
}
- (id)copyWithZone:(NSZone *)zone {
return self;
}
- (id)retain {
return self;
}
- (unsigned)retainCount {
return UINT_MAX; //denotes an object that cannot be released
}
- (void)release {
//do nothing
}
- (id)autorelease {
return self;
}
@end
@implementation AppleRemote (PrivateMethods)
- (void) setRemoteId: (int) value {
remoteId = value;
}
- (IOHIDQueueInterface**) queue {
return queue;
}
- (IOHIDDeviceInterface**) hidDeviceInterface {
return hidDeviceInterface;
}
- (NSDictionary*) cookieToButtonMapping {
return cookieToButtonMapping;
}
- (NSString*) validCookieSubstring: (NSString*) cookieString {
if (cookieString == nil || [cookieString length] == 0) return nil;
NSEnumerator* keyEnum = [[self cookieToButtonMapping] keyEnumerator];
NSString* key;
while(key = [keyEnum nextObject]) {
NSRange range = [cookieString rangeOfString:key];
if (range.location == 0) return key;
}
return nil;
}
- (void) sendSimulatedPlusMinusEvent: (id) time {
BOOL startSimulateHold = NO;
AppleRemoteEventIdentifier event = lastPlusMinusEvent;
@synchronized(self) {
startSimulateHold = (lastPlusMinusEvent>0 && lastPlusMinusEventTime == [time doubleValue]);
}
if (startSimulateHold) {
lastEventSimulatedHold = YES;
event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
[delegate appleRemoteButton:event pressedDown: YES clickCount: 1];
}
}
- (void) sendRemoteButtonEvent: (AppleRemoteEventIdentifier) event pressedDown: (BOOL) pressedDown {
if (delegate) {
if (simulatePlusMinusHold) {
if (event == kRemoteButtonVolume_Plus || event == kRemoteButtonVolume_Minus) {
if (pressedDown) {
lastPlusMinusEvent = event;
lastPlusMinusEventTime = [NSDate timeIntervalSinceReferenceDate];
[self performSelector:@selector(sendSimulatedPlusMinusEvent:)
withObject:[NSNumber numberWithDouble:lastPlusMinusEventTime]
afterDelay:HOLD_RECOGNITION_TIME_INTERVAL];
return;
} else {
if (lastEventSimulatedHold) {
event = (event==kRemoteButtonVolume_Plus) ? kRemoteButtonVolume_Plus_Hold : kRemoteButtonVolume_Minus_Hold;
lastPlusMinusEvent = 0;
lastEventSimulatedHold = NO;
} else {
@synchronized(self) {
lastPlusMinusEvent = 0;
}
pressedDown = YES;
}
}
}
}
if (([self clickCountEnabledButtons] & event) == event) {
if (pressedDown==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
return; // this one is triggered automatically by the handler
}
NSNumber* eventNumber;
NSNumber* timeNumber;
@synchronized(self) {
lastClickCountEventTime = [NSDate timeIntervalSinceReferenceDate];
if (lastClickCountEvent == event) {
eventClickCount = eventClickCount + 1;
} else {
eventClickCount = 1;
}
lastClickCountEvent = event;
timeNumber = [NSNumber numberWithDouble:lastClickCountEventTime];
eventNumber= [NSNumber numberWithUnsignedInt:event];
}
[self performSelector: @selector(executeClickCountEvent:)
withObject: [NSArray arrayWithObjects:eventNumber, timeNumber, nil]
afterDelay: maxClickTimeDifference];
} else {
[delegate appleRemoteButton:event pressedDown: pressedDown clickCount:1];
}
}
}
- (void) executeClickCountEvent: (NSArray*) values {
AppleRemoteEventIdentifier event = [[values objectAtIndex: 0] unsignedIntValue];
NSTimeInterval eventTimePoint = [[values objectAtIndex: 1] doubleValue];
BOOL finishedClicking = NO;
int finalClickCount = eventClickCount;
@synchronized(self) {
finishedClicking = (event != lastClickCountEvent || eventTimePoint == lastClickCountEventTime);
if (finishedClicking) eventClickCount = 0;
}
if (finishedClicking) {
[delegate appleRemoteButton:event pressedDown: YES clickCount:finalClickCount];
if ([self simulatesPlusMinusHold]==NO && (event == kRemoteButtonVolume_Minus || event == kRemoteButtonVolume_Plus)) {
// trigger a button release event, too
[NSThread sleepUntilDate: [NSDate dateWithTimeIntervalSinceNow:0.1]];
[delegate appleRemoteButton:event pressedDown: NO clickCount:finalClickCount];
}
}
}
- (void) handleEventWithCookieString: (NSString*) cookieString sumOfValues: (SInt32) sumOfValues {
/*
if (previousRemainingCookieString) {
cookieString = [previousRemainingCookieString stringByAppendingString: cookieString];
NSLog(@"New cookie string is %@", cookieString);
[previousRemainingCookieString release], previousRemainingCookieString=nil;
}*/
if (cookieString == nil || [cookieString length] == 0) return;
NSNumber* buttonId = [[self cookieToButtonMapping] objectForKey: cookieString];
if (buttonId != nil) {
[self sendRemoteButtonEvent: [buttonId intValue] pressedDown: (sumOfValues>0)];
} else {
// let's see if a number of events are stored in the cookie string. this does
// happen when the main thread is too busy to handle all incoming events in time.
NSString* subCookieString;
NSString* lastSubCookieString=nil;
while(subCookieString = [self validCookieSubstring: cookieString]) {
cookieString = [cookieString substringFromIndex: [subCookieString length]];
lastSubCookieString = subCookieString;
if (processesBacklog) [self handleEventWithCookieString: subCookieString sumOfValues:sumOfValues];
}
if (processesBacklog == NO && lastSubCookieString != nil) {
// process the last event of the backlog and assume that the button is not pressed down any longer.
// The events in the backlog do not seem to be in order and therefore (in rare cases) the last event might be
// a button pressed down event while in reality the user has released it.
// NSLog(@"processing last event of backlog");
[self handleEventWithCookieString: lastSubCookieString sumOfValues:0];
}
if ([cookieString length] > 0) {
NSLog(@"Unknown button for cookiestring %@", cookieString);
}
}
}
@end
/* Callback method for the device queue
Will be called for any event of any type (cookie) to which we subscribe
*/
static void QueueCallbackFunction(void* target, IOReturn result, void* refcon, void* sender) {
AppleRemote* remote = (AppleRemote*)target;
IOHIDEventStruct event;
AbsoluteTime zeroTime = {0,0};
NSMutableString* cookieString = [NSMutableString string];
SInt32 sumOfValues = 0;
while (result == kIOReturnSuccess)
{
result = (*[remote queue])->getNextEvent([remote queue], &event, zeroTime, 0);
if ( result != kIOReturnSuccess )
continue;
//printf("%d %d %d\n", event.elementCookie, event.value, event.longValue);
if (REMOTE_SWITCH_COOKIE == (int)event.elementCookie) {
[remote setRemoteId: event.value];
[remote handleEventWithCookieString: @"19_" sumOfValues: 0];
} else {
if (((int)event.elementCookie)!=5) {
sumOfValues+=event.value;
[cookieString appendString:[NSString stringWithFormat:@"%d_", event.elementCookie]];
}
}
}
[remote handleEventWithCookieString: cookieString sumOfValues: sumOfValues];
}
@implementation AppleRemote (IOKitMethods)
- (IOHIDDeviceInterface**) createInterfaceForDevice: (io_object_t) hidDevice {
io_name_t className;
IOCFPlugInInterface** plugInInterface = NULL;
HRESULT plugInResult = S_OK;
SInt32 score = 0;
IOReturn ioReturnValue = kIOReturnSuccess;
hidDeviceInterface = NULL;
ioReturnValue = IOObjectGetClass(hidDevice, className);
if (ioReturnValue != kIOReturnSuccess) {
NSLog(@"Error: Failed to get class name.");
return NULL;
}
ioReturnValue = IOCreatePlugInInterfaceForService(hidDevice,
kIOHIDDeviceUserClientTypeID,
kIOCFPlugInInterfaceID,
&plugInInterface,
&score);
if (ioReturnValue == kIOReturnSuccess)
{
//Call a method of the intermediate plug-in to create the device interface
plugInResult = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOHIDDeviceInterfaceID), (LPVOID) &hidDeviceInterface);
if (plugInResult != S_OK) {
NSLog(@"Error: Couldn't create HID class device interface");
}
// Release
if (plugInInterface) (*plugInInterface)->Release(plugInInterface);
}
return hidDeviceInterface;
}
- (io_object_t) findAppleRemoteDevice {
CFMutableDictionaryRef hidMatchDictionary = NULL;
IOReturn ioReturnValue = kIOReturnSuccess;
io_iterator_t hidObjectIterator = 0;
io_object_t hidDevice = 0;
// Set up a matching dictionary to search the I/O Registry by class
// name for all HID class devices
hidMatchDictionary = IOServiceMatching(AppleRemoteDeviceName);
// Now search I/O Registry for matching devices.
ioReturnValue = IOServiceGetMatchingServices(kIOMasterPortDefault, hidMatchDictionary, &hidObjectIterator);
if ((ioReturnValue == kIOReturnSuccess) && (hidObjectIterator != 0)) {
hidDevice = IOIteratorNext(hidObjectIterator);
}
// release the iterator
IOObjectRelease(hidObjectIterator);
return hidDevice;
}
- (BOOL) initializeCookies {
IOHIDDeviceInterface122** handle = (IOHIDDeviceInterface122**)hidDeviceInterface;
IOHIDElementCookie cookie;
long usage;
long usagePage;
id object;
NSArray* elements = nil;
NSDictionary* element;
IOReturn success;
if (!handle || !(*handle)) return NO;
/* Copy all elements, since we're grabbing most of the elements
* for this device anyway, and thus, it's faster to iterate them
* ourselves. When grabbing only one or two elements, a matching
* dictionary should be passed in here instead of NULL. */
success = (*handle)->copyMatchingElements(handle, NULL, (CFArrayRef*)&elements);
if (success == kIOReturnSuccess) {
[elements autorelease];
/*
cookies = calloc(NUMBER_OF_APPLE_REMOTE_ACTIONS, sizeof(IOHIDElementCookie));
memset(cookies, 0, sizeof(IOHIDElementCookie) * NUMBER_OF_APPLE_REMOTE_ACTIONS);
*/
allCookies = [[NSMutableArray alloc] init];
int i;
for (i=0; i< [elements count]; i++) {
element = [elements objectAtIndex:i];
//Get cookie
object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementCookieKey) ];
if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
if (object == 0 || CFGetTypeID(object) != CFNumberGetTypeID()) continue;
cookie = (IOHIDElementCookie) [object longValue];
//Get usage
object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsageKey) ];
if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
usage = [object longValue];
//Get usage page
object = [element valueForKey: (NSString*)CFSTR(kIOHIDElementUsagePageKey) ];
if (object == nil || ![object isKindOfClass:[NSNumber class]]) continue;
usagePage = [object longValue];
[allCookies addObject: [NSNumber numberWithInt:(int)cookie]];
}
} else {
return NO;
}
return YES;
}
- (BOOL) openDevice {
HRESULT result;
IOHIDOptionsType openMode = kIOHIDOptionsTypeNone;
if ([self isOpenInExclusiveMode]) openMode = kIOHIDOptionsTypeSeizeDevice;
IOReturn ioReturnValue = (*hidDeviceInterface)->open(hidDeviceInterface, openMode);
if (ioReturnValue == KERN_SUCCESS) {
queue = (*hidDeviceInterface)->allocQueue(hidDeviceInterface);
if (queue) {
result = (*queue)->create(queue, 0, 12); //depth: maximum number of elements in queue before oldest elements in queue begin to be lost.
int i=0;
for(i=0; i<[allCookies count]; i++) {
IOHIDElementCookie cookie = (IOHIDElementCookie)[[allCookies objectAtIndex:i] intValue];
(*queue)->addElement(queue, cookie, 0);
}
// add callback for async events
CFRunLoopSourceRef eventSource;
ioReturnValue = (*queue)->createAsyncEventSource(queue, &eventSource);
if (ioReturnValue == KERN_SUCCESS) {
ioReturnValue = (*queue)->setEventCallout(queue,QueueCallbackFunction, self, NULL);
if (ioReturnValue == KERN_SUCCESS) {
CFRunLoopAddSource(CFRunLoopGetCurrent(), eventSource, kCFRunLoopDefaultMode);
//start data delivery to queue
(*queue)->start(queue);
return YES;
} else {
NSLog(@"Error when setting event callout");
}
} else {
NSLog(@"Error when creating async event source");
}
} else {
NSLog(@"Error when opening device");
}
}
return NO;
}
@end
@implementation AppleRemoteApplicationDelegate
- (id) initWithApplicationDelegate: (id) delegate {
if (self = [super init]) {
applicationDelegate = [delegate retain];
}
return self;
}
- (void) dealloc {
NSLog(@"Dealloc");
[applicationDelegate release];
[super dealloc];
}
- (id) applicationDelegate {
return applicationDelegate;
}
- (void)applicationWillBecomeActive:(NSNotification *)aNotification {
if ([applicationDelegate respondsToSelector: @selector(applicationWillBecomeActive:)]) {
[applicationDelegate applicationWillBecomeActive: aNotification];
}
}
- (void)applicationDidBecomeActive:(NSNotification *)aNotification {
[[AppleRemote sharedRemote] setListeningToRemote: YES];
if ([applicationDelegate respondsToSelector: @selector(applicationDidBecomeActive:)]) {
[applicationDelegate applicationDidBecomeActive: aNotification];
}
}
- (void)applicationWillResignActive:(NSNotification *)aNotification {
[[AppleRemote sharedRemote] setListeningToRemote: NO];
if ([applicationDelegate respondsToSelector: @selector(applicationWillResignActive:)]) {
[applicationDelegate applicationWillResignActive: aNotification];
}
}
- (void)applicationDidResignActive:(NSNotification *)aNotification {
if ([applicationDelegate respondsToSelector: @selector(applicationDidResignActive:)]) {
[applicationDelegate applicationDidResignActive: aNotification];
}
}
- (NSMethodSignature *)methodSignatureForSelector:(SEL)aSelector {
NSMethodSignature* signature = [super methodSignatureForSelector: aSelector];
if (signature == nil && applicationDelegate != nil) {
signature = [applicationDelegate methodSignatureForSelector: aSelector];
}
return signature;
}
- (void)forwardInvocation:(NSInvocation *)invocation {
SEL aSelector = [invocation selector];
if (applicationDelegate==nil || [applicationDelegate respondsToSelector:aSelector]==NO) {
[super forwardInvocation: invocation];
return;
}
[invocation invokeWithTarget:applicationDelegate];
}
@end