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KVPasscodeViewController.h

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+//
+//  KVPasscodeViewController.h
+//  Koolistov
+//
+//  Created by Johan Kool on 3/17/11.
+//  Copyright 2011 Koolistov. All rights reserved.
+//
+//  Redistribution and use in source and binary forms, with or without modification, are 
+//  permitted provided that the following conditions are met:
+//
+//  * Redistributions of source code must retain the above copyright notice, this list of 
+//    conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright notice, this list 
+//    of conditions and the following disclaimer in the documentation and/or other materials 
+//    provided with the distribution.
+//  * Neither the name of KOOLISTOV nor the names of its contributors may be used to 
+//    endorse or promote products derived from this software without specific prior written 
+//    permission.
+//
+//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
+//  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
+//  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
+//  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+//  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
+//  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+//
+// Known issues:
+// - KVPasscodeAnimationStyleConfirm animation not quite perfect (bullets visible in incoming field)
+//
+
+#import <UIKit/UIKit.h>
+
+@class KVPasscodeViewController;
+
+@protocol KVPasscodeViewControllerDelegate <NSObject>
+
+- (void)passcodeController:(KVPasscodeViewController *)controller passcodeEntered:(NSString *)passCode;
+
+@end
+
+typedef enum {
+    KVPasscodeAnimationStyleNone,
+    KVPasscodeAnimationStyleInvalid,
+    KVPasscodeAnimationStyleConfirm
+} KVPasscodeAnimationStyle;
+
+@interface KVPasscodeViewController : UIViewController <UITextFieldDelegate> {
+    id <KVPasscodeViewControllerDelegate> delegate;
+
+    IBOutlet UIView *animationView;
+
+    IBOutlet UILabel *titleLabel;
+    IBOutlet UILabel *instructionLabel;
+
+    IBOutlet UITextField *bulletField0;
+    IBOutlet UITextField *bulletField1;
+    IBOutlet UITextField *bulletField2;
+    IBOutlet UITextField *bulletField3;
+
+    UITextField *fakeField;
+}
+
+@property (nonatomic, assign) id <KVPasscodeViewControllerDelegate> delegate; 
+
+@property (nonatomic, retain) IBOutlet UIView *animationView;
+
+@property (nonatomic, retain) IBOutlet UILabel *titleLabel;
+@property (nonatomic, retain) IBOutlet UILabel *instructionLabel;
+
+@property (nonatomic, retain) IBOutlet UITextField *bulletField0;
+@property (nonatomic, retain) IBOutlet UITextField *bulletField1;
+@property (nonatomic, retain) IBOutlet UITextField *bulletField2;
+@property (nonatomic, retain) IBOutlet UITextField *bulletField3;
+
+- (void)resetWithAnimation:(KVPasscodeAnimationStyle)animationStyle;
+
+@end

KVPasscodeViewController.m

@@ -0,0 +1,220 @@
+//
+//  KVPasscodeViewController.m
+//  Koolistov
+//
+//  Created by Johan Kool on 3/17/11.
+//  Copyright 2011 Koolistov. All rights reserved.
+//
+//  Redistribution and use in source and binary forms, with or without modification, are 
+//  permitted provided that the following conditions are met:
+//
+//  * Redistributions of source code must retain the above copyright notice, this list of 
+//    conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright notice, this list 
+//    of conditions and the following disclaimer in the documentation and/or other materials 
+//    provided with the distribution.
+//  * Neither the name of KOOLISTOV nor the names of its contributors may be used to 
+//    endorse or promote products derived from this software without specific prior written 
+//    permission.
+//
+//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
+//  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
+//  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
+//  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+//  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
+//  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+
+#import "KVPasscodeViewController.h"
+
+#import <QuartzCore/QuartzCore.h>
+
+@interface KVPasscodeViewController ()
+
+- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag;
+
+@end
+
+@implementation KVPasscodeViewController
+
+@synthesize delegate;
+
+@synthesize animationView;
+
+@synthesize titleLabel;
+@synthesize instructionLabel;
+
+@synthesize bulletField0;
+@synthesize bulletField1;
+@synthesize bulletField2;
+@synthesize bulletField3;
+
+- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+    if (self) {
+        // Custom initialization
+    }
+    return self;
+}
+
+- (void)dealloc {
+    [animationView release], animationView = nil;
+
+    [titleLabel release], titleLabel = nil;
+    [instructionLabel release], instructionLabel = nil;
+
+    [bulletField0 release], bulletField0 = nil;
+    [bulletField1 release], bulletField1 = nil;
+    [bulletField2 release], bulletField2 = nil;
+    [bulletField3 release], bulletField3 = nil;
+    [super dealloc];
+}
+
+- (void)didReceiveMemoryWarning {
+    // Releases the view if it doesn't have a superview.
+    [super didReceiveMemoryWarning];
+
+    // Release any cached data, images, etc that aren't in use.
+}
+
+#pragma mark - View lifecycle
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    fakeField = [[UITextField alloc] initWithFrame:CGRectZero];
+    fakeField.delegate = self;
+    fakeField.keyboardType = UIKeyboardTypeNumberPad;
+    fakeField.text = @"";
+    [fakeField becomeFirstResponder];
+    [self.view addSubview:fakeField];
+    [fakeField release];
+
+    // Do any additional setup after loading the view from its nib.
+    self.navigationItem.title = NSLocalizedString(@"Passcode", @"");
+}
+
+- (void)viewDidUnload {
+    [super viewDidUnload];
+    // Release any retained subviews of the main view.
+    // e.g. self.myOutlet = nil;
+    fakeField = nil;
+
+    self.animationView = nil;
+
+    self.titleLabel = nil;
+    self.instructionLabel = nil;
+
+    self.bulletField0 = nil;
+    self.bulletField1 = nil;
+    self.bulletField2 = nil;
+    self.bulletField3 = nil;
+}
+
+- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
+    // Return YES for supported orientations
+    return (interfaceOrientation == UIInterfaceOrientationPortrait);
+}
+
+- (void)resetWithAnimation:(KVPasscodeAnimationStyle)animationStyle {
+    switch (animationStyle) {
+        case KVPasscodeAnimationStyleInvalid:
+            ;
+            CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
+            [animation setDelegate:self]; 
+            [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:)];
+            [animation setDuration:0.025];
+            [animation setRepeatCount:8];
+            [animation setAutoreverses:YES];
+            [animation setFromValue:[NSValue valueWithCGPoint:
+                                     CGPointMake([animationView center].x - 14.0f, [animationView center].y)]];
+            [animation setToValue:[NSValue valueWithCGPoint:
+                                   CGPointMake([animationView center].x + 14.0f, [animationView center].y)]];
+            [[animationView layer] addAnimation:animation forKey:@"position"];
+            break;
+        case KVPasscodeAnimationStyleConfirm:
+            ;
+            CATransition *transition = [CATransition animation]; 
+            [transition setDelegate:self]; 
+            [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:)];
+            [transition setType:kCATransitionPush]; 
+            [transition setSubtype:kCATransitionFromRight]; 
+            [transition setDuration:0.5f];
+            [transition setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]]; 
+            [self.view exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; 
+            [[animationView layer] addAnimation:transition forKey:@"swipe"];
+            break;
+        case KVPasscodeAnimationStyleNone:
+        default:
+            self.bulletField0.text = nil;
+            self.bulletField1.text = nil;
+            self.bulletField2.text = nil;
+            self.bulletField3.text = nil;
+
+            fakeField.text = @"";
+            break;
+    }
+}
+
+#pragma mark - CAAnimationDelegate 
+- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
+    self.bulletField0.text = nil;
+    self.bulletField1.text = nil;
+    self.bulletField2.text = nil;
+    self.bulletField3.text = nil;
+
+    fakeField.text = @"";
+}
+
+#pragma mark - UITextFieldDelegate
+- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
+    NSString *passcode = [textField text];
+    passcode = [passcode stringByReplacingCharactersInRange:range withString:string];
+
+    switch ([passcode length]) {
+        case 0:
+            self.bulletField0.text = nil;
+            self.bulletField1.text = nil;
+            self.bulletField2.text = nil;
+            self.bulletField3.text = nil;
+            break;
+        case 1:
+            self.bulletField0.text = @"*";
+            self.bulletField1.text = nil;
+            self.bulletField2.text = nil;
+            self.bulletField3.text = nil;
+            break;
+        case 2:
+            self.bulletField0.text = @"*";
+            self.bulletField1.text = @"*";
+            self.bulletField2.text = nil;
+            self.bulletField3.text = nil;
+            break;
+        case 3:
+            self.bulletField0.text = @"*";
+            self.bulletField1.text = @"*";
+            self.bulletField2.text = @"*";
+            self.bulletField3.text = nil;
+            break;
+        case 4:
+            self.bulletField0.text = @"*";
+            self.bulletField1.text = @"*";
+            self.bulletField2.text = @"*";
+            self.bulletField3.text = @"*";
+
+            [self.delegate passcodeController:self passcodeEntered:passcode];
+            textField.text = @"";
+            return NO;
+
+            break;
+        default:
+            break;
+    }
+
+    return YES;
+}
+
+@end