1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 #import "SkEventNotifier.h" 10 #include "SkEvent.h" 11 #define SkEventClass @"SkEvenClass" 12 @implementation SkEventNotifier 13 - (id)init { 14 self = [super init]; 15 if (self) { 16 //Register as an observer for SkEventClass events and call 17 //receiveSkEvent: upon receiving the event 18 [[NSNotificationCenter defaultCenter] addObserver:self 19 selector:@selector(receiveSkEvent:) 20 name:SkEventClass 21 object:nil]; 22 } 23 return self; 24 } 25 26 - (void)dealloc { 27 [[NSNotificationCenter defaultCenter] removeObserver:self]; 28 [super dealloc]; 29 } 30 31 -(BOOL) acceptsFirstResponder { 32 return YES; 33 } 34 35 //SkEvent Handers 36 - (void)receiveSkEvent:(NSNotification *)notification { 37 if(SkEvent::ProcessEvent()) 38 SkEvent::SignalNonEmptyQueue(); 39 } 40 41 + (void)postTimedSkEvent:(NSTimeInterval)timeInterval { 42 [NSTimer scheduledTimerWithTimeInterval:timeInterval target:self 43 selector:@selector(timerFireMethod:) 44 userInfo:nil repeats:NO]; 45 } 46 47 + (void)timerFireMethod:(NSTimer*)theTimer { 48 SkEvent::ServiceQueueTimer(); 49 } 50 51 @end 52 //////////////////////////////////////////////////////////////////////////////// 53 void SkEvent::SignalNonEmptyQueue() { 54 //post a SkEventClass event to the default notification queue 55 NSNotification* notification = [NSNotification notificationWithName:SkEventClass object:nil]; 56 [[NSNotificationQueue defaultQueue] enqueueNotification:notification 57 postingStyle:NSPostWhenIdle 58 coalesceMask:NSNotificationNoCoalescing 59 forModes:nil]; 60 } 61 62 void SkEvent::SignalQueueTimer(SkMSec delay) { 63 if (delay) { 64 //Convert to seconds 65 NSTimeInterval ti = delay/(float)SK_MSec1; 66 [SkEventNotifier postTimedSkEvent:ti]; 67 } 68 } 69
