add textfield support

SIAlertView/SIAlertView.h

@@ -32,14 +32,21 @@ typedef NS_ENUM(NSInteger, SIAlertViewTransitionStyle) {
     SIAlertViewTransitionStyleDropDown
 };
 
+typedef NS_ENUM(NSInteger, SIAlertViewStyle) {
+    SIAlertViewStyleDefault = 0,
+    SIAlertViewStylePlainTextInput
+};
+
 @class SIAlertView;
 typedef void(^SIAlertViewHandler)(SIAlertView *alertView);
 
 @interface SIAlertView : UIView
 
 @property (nonatomic, copy) NSString *title;
 @property (nonatomic, copy) NSString *message;
+@property (nonatomic, copy, readonly) NSString *inputText;
 
+@property (nonatomic, assign) SIAlertViewStyle alertViewStyle; // default is SIAlertViewStyleDefault
 @property (nonatomic, assign) SIAlertViewTransitionStyle transitionStyle; // default is SIAlertViewTransitionStyleSlideFromBottom
 @property (nonatomic, assign) SIAlertViewBackgroundStyle backgroundStyle; // default is SIAlertViewButtonTypeGradient
 

SIAlertView/SIAlertView.m

@@ -24,6 +24,7 @@
 #define CONTENT_PADDING_TOP 12
 #define CONTENT_PADDING_BOTTOM 10
 #define BUTTON_HEIGHT 44
+#define TEXTFIELD_HEIGHT 28
 #define CONTAINER_WIDTH 300
 
 const UIWindowLevel UIWindowLevelSIAlert = 1999.0;  // don't overlap system's alert
@@ -44,9 +45,12 @@ @interface SIAlertView ()
 
 @property (nonatomic, strong) UILabel *titleLabel;
 @property (nonatomic, strong) UILabel *messageLabel;
+@property (nonatomic, strong) UITextField *textField;
 @property (nonatomic, strong) UIView *containerView;
 @property (nonatomic, strong) NSMutableArray *buttons;
 
+@property (nonatomic, assign) CGFloat keyboardOffset;
+
 @property (nonatomic, assign, getter = isLayoutDirty) BOOL layoutDirty;
 
 + (NSMutableArray *)sharedQueue;
@@ -167,6 +171,9 @@ - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrie
 
 #pragma mark - SIAlert
 
+@interface SIAlertView() <UITextFieldDelegate>
+@end
+
 @implementation SIAlertView
 
 + (void)initialize
@@ -262,6 +269,12 @@ + (void)hideBackgroundAnimated:(BOOL)animated
                      }];
 }
 
+#pragma mark - Getters
+
+- (NSString *)inputText {
+    return self.textField ? self.textField.text : @"";
+}
+
 #pragma mark - Setters
 
 - (void)setTitle:(NSString *)title
@@ -346,6 +359,8 @@ - (void)show
         NSInteger index = [[SIAlertView sharedQueue] indexOfObject:self];
         if (index < [SIAlertView sharedQueue].count - 1) {
             [self dismissAnimated:YES cleanup:NO]; // dismiss to show next alert view
+        } else if(self.textField) {
+            [self.textField becomeFirstResponder];
         }
     }];
 }
@@ -363,6 +378,13 @@ - (void)dismissAnimated:(BOOL)animated cleanup:(BOOL)cleanup
         if (self.willDismissHandler) {
             self.willDismissHandler(self);
         }
+
+        if(self.textField) {
+            [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
+            [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
+            [self.textField resignFirstResponder];
+        }
+
         [[NSNotificationCenter defaultCenter] postNotificationName:SIAlertViewWillDismissNotification object:self userInfo:nil];
     }
 
@@ -625,9 +647,10 @@ - (void)validateLayout
     NSLog(@"%@, %@", self, NSStringFromSelector(_cmd));
 #endif
 
+    CGFloat availableHeight = self.bounds.size.height - self.keyboardOffset;
     CGFloat height = [self preferredHeight];
     CGFloat left = (self.bounds.size.width - CONTAINER_WIDTH) * 0.5;
-    CGFloat top = (self.bounds.size.height - height) * 0.5;
+    CGFloat top = (availableHeight - height) * 0.5;
     self.containerView.transform = CGAffineTransformIdentity;
     self.containerView.frame = CGRectMake(left, top, CONTAINER_WIDTH, height);
     self.containerView.layer.shadowPath = [UIBezierPath bezierPathWithRoundedRect:self.containerView.bounds cornerRadius:self.containerView.layer.cornerRadius].CGPath;
@@ -648,6 +671,15 @@ - (void)validateLayout
         self.messageLabel.frame = CGRectMake(CONTENT_PADDING_LEFT, y, self.containerView.bounds.size.width - CONTENT_PADDING_LEFT * 2, height);
         y += height;
     }
+    if(self.textField) {
+        if (y > CONTENT_PADDING_TOP) {
+            y += GAP;
+        }
+        CGFloat height = TEXTFIELD_HEIGHT;
+        self.textField.frame = CGRectMake(CONTENT_PADDING_LEFT, y, self.containerView.bounds.size.width - CONTENT_PADDING_LEFT * 2, height);
+        y += height;
+
+    }
     if (self.items.count > 0) {
         if (y > CONTENT_PADDING_TOP) {
             y += GAP;
@@ -687,6 +719,12 @@ - (CGFloat)preferredHeight
         }
         height += [self heightForMessageLabel];
     }
+    if (self.textField) {
+        if (height > CONTENT_PADDING_TOP) {
+            height += GAP;
+        }
+        height += TEXTFIELD_HEIGHT;
+    }
     if (self.items.count > 0) {
         if (height > CONTENT_PADDING_TOP) {
             height += GAP;
@@ -742,6 +780,9 @@ - (void)setup
     [self setupContainerView];
     [self updateTitleLabel];
     [self updateMessageLabel];
+    if(self.alertViewStyle == SIAlertViewStylePlainTextInput) {
+        [self setupTextField];
+    }
     [self setupButtons];
     [self invaliadateLayout];
 }
@@ -819,6 +860,23 @@ - (void)updateMessageLabel
     [self invaliadateLayout];
 }
 
+- (void)setupTextField
+{
+    if(!self.textField) {
+        self.textField = [[UITextField alloc] initWithFrame:self.bounds];
+        self.textField.delegate = self;
+        self.textField.text = @"";
+        self.textField.borderStyle = UITextBorderStyleBezel;
+        [self.containerView addSubview:self.textField];
+#if DEBUG_LAYOUT
+        self.textField.backgroundColor = [UIColor redColor];
+#endif
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShowNotification:) name:UIKeyboardWillShowNotification object:nil];
+        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHideNotification:) name:UIKeyboardWillHideNotification object:nil];
+    }
+    [self invaliadateLayout];
+}
+
 - (void)setupButtons
 {
     self.buttons = [[NSMutableArray alloc] initWithCapacity:self.items.count];
@@ -894,6 +952,55 @@ - (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
     }
 }
 
+#pragma mark - UITextField delegate
+
+- (BOOL)textFieldShouldReturn:(UITextField *)textField {
+    [textField resignFirstResponder];
+    return YES;
+}
+
+#pragma mark - Keyboard notification handlers
+
+-(void)keyboardWillShowNotification:(NSNotification *)notification {
+    [self moveAlertForKeyboard:notification up:YES];
+}
+-(void)keyboardWillHideNotification:(NSNotification *)notification {
+    [self moveAlertForKeyboard:notification up:NO];
+}
+
+- (void)moveAlertForKeyboard:(NSNotification*)notification up:(BOOL)up {
+    NSDictionary* userInfo = [notification userInfo];
+    NSTimeInterval animationDuration;
+    UIViewAnimationCurve animationCurve;
+    CGRect keyboardEndFrame;
+
+    [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] getValue:&animationCurve];
+    [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration];
+    [[userInfo objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&keyboardEndFrame];
+
+    //calculate new position
+    CGRect containerFrame = self.containerView.frame;
+    CGRect convertedKeyboardFrame = [self convertRect:keyboardEndFrame fromView:self.window];
+    CGFloat adjustedHeight = self.bounds.size.height;
+    if(up) {
+        adjustedHeight -= convertedKeyboardFrame.size.height;
+    }
+    containerFrame.origin.y = (adjustedHeight - containerFrame.size.height) / 2;
+
+    [UIView beginAnimations:nil context:nil];
+    [UIView setAnimationDuration:animationDuration];
+    [UIView setAnimationCurve:animationCurve];
+    self.containerView.frame = containerFrame;
+    [UIView commitAnimations];
+
+    //keyboardOffset is used to adjust the alertView y position on willRotate, i.e. before the rotation occurs. Therefore the height is set dependent of the current orientation
+    if(up) {
+        self.keyboardOffset = UIInterfaceOrientationIsPortrait([[UIDevice currentDevice] orientation]) ? keyboardEndFrame.size.height : keyboardEndFrame.size.width;
+    } else {
+        self.keyboardOffset = 0;
+    }
+}
+
 #pragma mark - UIAppearance setters
 
 - (void)setViewBackgroundColor:(UIColor *)viewBackgroundColor

SIAlertViewExample/SIAlertViewExample/ViewController.m

@@ -135,6 +135,7 @@ - (IBAction)alert2:(id)sender
 - (IBAction)alert3:(id)sender
 {
     SIAlertView *alertView = [[SIAlertView alloc] initWithTitle:nil andMessage:@"Message3"];
+    alertView.alertViewStyle = SIAlertViewStylePlainTextInput;
     [alertView addButtonWithTitle:@"Cancel"
                              type:SIAlertViewButtonTypeCancel
                           handler:^(SIAlertView *alertView) {
@@ -144,6 +145,7 @@ - (IBAction)alert3:(id)sender
                              type:SIAlertViewButtonTypeDefault
                           handler:^(SIAlertView *alertView) {
                               NSLog(@"OK Clicked");
+                              NSLog(@"Textinput: %@", alertView.inputText);
                           }];
     alertView.transitionStyle = SIAlertViewTransitionStyleDropDown;
     alertView.backgroundStyle = SIAlertViewBackgroundStyleSolid;