Added EventKit example

.gitignore

@@ -1,3 +1,4 @@
 src/build/
 Examples/Holiday/build/
+Examples/NativeCal/build/
 

Examples/NativeCal/Classes/EventKitDataSource.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2010 Keith Lazuka
+ * License: http://www.opensource.org/licenses/mit-license.html
+ */
+
+#import "Kal.h"
+
+@class EKEventStore, EKEvent;
+
+@interface EventKitDataSource : NSObject <KalDataSource>
+{
+  EKEventStore *eventStore;
+  NSMutableArray *items;
+  NSMutableArray *events;
+}
+
++ (EventKitDataSource *)dataSource;
+- (EKEvent *)eventAtIndexPath:(NSIndexPath *)indexPath;  // exposed for client so that it can implement the UITableViewDelegate protocol.
+
+@end

Examples/NativeCal/Classes/EventKitDataSource.m

@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2010 Keith Lazuka
+ * License: http://www.opensource.org/licenses/mit-license.html
+ */
+
+#import "EventKitDataSource.h"
+#import <EventKit/EventKit.h>
+
+static BOOL IsDateBetweenInclusive(NSDate *date, NSDate *begin, NSDate *end)
+{
+  return [date compare:begin] != NSOrderedAscending && [date compare:end] != NSOrderedDescending;
+}
+
+@interface EventKitDataSource ()
+- (NSArray *)eventsFrom:(NSDate *)fromDate to:(NSDate *)toDate;
+- (NSArray *)markedDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate;
+@end
+
+@implementation EventKitDataSource
+
++ (EventKitDataSource *)dataSource
+{
+  return [[[[self class] alloc] init] autorelease];
+}
+
+- (id)init
+{
+  if ((self = [super init])) {
+    eventStore = [[EKEventStore alloc] init];
+    events = [[NSMutableArray alloc] init];
+    items = [[NSMutableArray alloc] init];
+  }
+  return self;
+}
+
+- (EKEvent *)eventAtIndexPath:(NSIndexPath *)indexPath
+{
+  return [items objectAtIndex:indexPath.row];
+}
+
+#pragma mark UITableViewDataSource protocol conformance
+
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+  static NSString *identifier = @"MyCell";
+  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
+  if (!cell) {
+    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier] autorelease];
+    cell.selectionStyle = UITableViewCellSelectionStyleNone;
+    cell.imageView.contentMode = UIViewContentModeScaleAspectFill;
+  }
+
+  EKEvent *event = [self eventAtIndexPath:indexPath];
+  cell.textLabel.text = event.title;
+  return cell;
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
+{
+  return [items count];
+}
+
+#pragma mark KalDataSource protocol conformance
+
+- (void)presentingDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate delegate:(id<KalDataSourceCallbacks>)delegate
+{
+  [events removeAllObjects];
+  NSLog(@"Fetching events from EventKit between %@ and %@...", fromDate, toDate);
+  NSPredicate *predicate = [eventStore predicateForEventsWithStartDate:fromDate endDate:toDate calendars:nil];
+  [events addObjectsFromArray:[eventStore eventsMatchingPredicate:predicate]];
+  [delegate loadedDataSource:self];
+}
+
+- (NSArray *)markedDatesFrom:(NSDate *)fromDate to:(NSDate *)toDate
+{
+  return [[self eventsFrom:fromDate to:toDate] valueForKeyPath:@"startDate"];
+}
+
+- (void)loadItemsFromDate:(NSDate *)fromDate toDate:(NSDate *)toDate
+{
+  [items addObjectsFromArray:[self eventsFrom:fromDate to:toDate]];
+}
+
+- (void)removeAllItems
+{
+  [items removeAllObjects];
+}
+
+#pragma mark -
+
+- (NSArray *)eventsFrom:(NSDate *)fromDate to:(NSDate *)toDate
+{
+  NSMutableArray *matches = [NSMutableArray array];
+  for (EKEvent *event in events)
+    if (IsDateBetweenInclusive(event.startDate, fromDate, toDate))
+      [matches addObject:event];
+
+  return matches;
+}
+
+- (void)dealloc
+{
+  [eventStore release];
+  [items release];
+  [events release];
+  [super dealloc];
+}
+
+@end

Examples/NativeCal/Classes/NativeCalAppDelegate.h

@@ -0,0 +1,29 @@
+/* 
+ * Copyright (c) 2010 Keith Lazuka
+ * License: http://www.opensource.org/licenses/mit-license.html
+ */
+
+#import <UIKit/UIKit.h>
+
+/*
+ *    NativeCalAppDelegate
+ *    --------------------
+ *
+ *  This demo app shows how to use Kal to display events
+ *  from EventKit (Apple's native calendar database).
+ *
+ */
+
+@class KalViewController;
+
+@interface NativeCalAppDelegate : NSObject <UIApplicationDelegate, UITableViewDelegate>
+{
+  UIWindow *window;
+  UINavigationController *navController;
+  KalViewController *kal;
+  id dataSource;
+}
+
+@property (nonatomic, retain) IBOutlet UIWindow *window;
+
+@end

Examples/NativeCal/Classes/NativeCalAppDelegate.m

@@ -0,0 +1,71 @@
+/* 
+ * Copyright (c) 2010 Keith Lazuka
+ * License: http://www.opensource.org/licenses/mit-license.html
+ */
+
+#import "NativeCalAppDelegate.h"
+#import "EventKitDataSource.h"
+#import "Kal.h"
+
+#import <EventKit/EventKit.h>
+#import <EventKitUI/EventKitUI.h>
+
+@implementation NativeCalAppDelegate
+
+@synthesize window;
+
+- (void)applicationDidFinishLaunching:(UIApplication *)application
+{
+  /*
+   *    Kal Initialization
+   *
+   * When the calendar is first displayed to the user, Kal will automatically select today's date.
+   * If your application requires an arbitrary starting date, use -[KalViewController initWithSelectedDate:]
+   * instead of -[KalViewController init].
+   */
+  kal = [[KalViewController alloc] init];
+
+  /*
+   *    Kal Configuration
+   *
+   */
+  kal.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Today" style:UIBarButtonItemStyleBordered target:self action:@selector(showAndSelectToday)] autorelease];
+  kal.delegate = self;
+  dataSource = [[EventKitDataSource alloc] init];
+  kal.dataSource = dataSource;
+
+  // Setup the navigation stack and display it.
+  navController = [[UINavigationController alloc] initWithRootViewController:kal];
+  [window addSubview:navController.view];
+  [window makeKeyAndVisible];
+}
+
+// Action handler for the navigation bar's right bar button item.
+- (void)showAndSelectToday
+{
+  [kal showAndSelectDate:[NSDate date]];
+}
+
+#pragma mark UITableViewDelegate protocol conformance
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
+{
+  // Display a details screen for the selected event/row.
+  EKEventViewController *vc = [[[EKEventViewController alloc] init] autorelease];
+  vc.event = [dataSource eventAtIndexPath:indexPath];
+  vc.allowsEditing = NO;
+  [navController pushViewController:vc animated:YES];
+}
+
+#pragma mark -
+
+- (void)dealloc
+{
+  [kal release];
+  [dataSource release];
+  [window release];
+  [navController release];
+  [super dealloc];
+}
+
+@end