Added support for the KalDataSource to notify Kal that the UI needs t…

…o be refreshed. Added EKEventStoreChangedNotification handling to NativeCal example app.
klazuka · Jul 9, 2010 · 1e51cb1 · 1e51cb1
1 parent 843d79b
commit 1e51cb1
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Showing 4 changed files with 19 additions and 2 deletions.
diff --git a/Examples/NativeCal/Classes/EventKitDataSource.m b/Examples/NativeCal/Classes/EventKitDataSource.m
@@ -29,10 +29,16 @@ - (id)init
     eventStore = [[EKEventStore alloc] init];
     events = [[NSMutableArray alloc] init];
     items = [[NSMutableArray alloc] init];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(eventStoreChanged:) name:EKEventStoreChangedNotification object:nil];
   }
   return self;
 }
 
+- (void)eventStoreChanged:(NSNotification *)note
+{
+  [[NSNotificationCenter defaultCenter] postNotificationName:KalDataSourceChangedNotification object:nil];
+}
+
 - (EKEvent *)eventAtIndexPath:(NSIndexPath *)indexPath
 {
   return [items objectAtIndex:indexPath.row];
@@ -100,6 +106,7 @@ - (NSArray *)eventsFrom:(NSDate *)fromDate to:(NSDate *)toDate
 
 - (void)dealloc
 {
+  [[NSNotificationCenter defaultCenter] removeObserver:self name:EKEventStoreChangedNotification object:nil];
   [eventStore release];
   [items release];
   [events release];

diff --git a/Examples/NativeCal/NativeCal.xcodeproj/project.pbxproj b/Examples/NativeCal/NativeCal.xcodeproj/project.pbxproj
@@ -25,14 +25,14 @@
 			isa = PBXContainerItemProxy;
 			containerPortal = 533B295311E4A89500B3CC07 /* Kal.xcodeproj */;
 			proxyType = 2;
-			remoteGlobalIDString = D2AAC07E0554694100DB518D /* libKal.a */;
+			remoteGlobalIDString = D2AAC07E0554694100DB518D;
 			remoteInfo = Kal;
 		};
 		533B295D11E4A8BA00B3CC07 /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 533B295311E4A89500B3CC07 /* Kal.xcodeproj */;
 			proxyType = 1;
-			remoteGlobalIDString = D2AAC07D0554694100DB518D /* Kal */;
+			remoteGlobalIDString = D2AAC07D0554694100DB518D;
 			remoteInfo = Kal;
 		};
 /* End PBXContainerItemProxy section */
@@ -276,6 +276,7 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = ../../src;
+				ONLY_ACTIVE_ARCH = YES;
 				OTHER_LDFLAGS = "-all_load";
 				PREBINDING = NO;
 				SDKROOT = iphoneos4.0;

diff --git a/src/Kal.h b/src/Kal.h
@@ -36,3 +36,8 @@
 
 #import "KalViewController.h"
 #import "KalDataSource.h"
+
+// The KalDataSource implementation should post this notification
+// whenever its content has changed. Kal uses this notification to
+// keep the UI in sync with the data source.
+extern NSString *const KalDataSourceChangedNotification;
diff --git a/src/KalViewController.m b/src/KalViewController.m
@@ -28,6 +28,8 @@ void mach_absolute_difference(uint64_t end, uint64_t start, struct timespec *tp)
 }
 #endif
 
+NSString *const KalDataSourceChangedNotification = @"KalDataSourceChangedNotification";
+
 @interface KalViewController ()
 - (KalView*)calendarView;
 @end
@@ -41,6 +43,7 @@ - (id)initWithSelectedDate:(NSDate *)selectedDate
   if ((self = [super init])) {
     logic = [[KalLogic alloc] initForDate:selectedDate];
     initialSelectedDate = [selectedDate retain];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reloadData) name:KalDataSourceChangedNotification object:nil];
   }
   return self;
 }
@@ -188,6 +191,7 @@ - (void)viewDidAppear:(BOOL)animated
 
 - (void)dealloc
 {
+  [[NSNotificationCenter defaultCenter] removeObserver:self name:KalDataSourceChangedNotification object:nil];
   [initialSelectedDate release];
   [logic release];
   [tableView release];