Repo created

iphone/Maps/Classes/CustomAlert/RoutingDisclaimerAlert/MWMRoutingDisclaimerAlert.m

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+#import "MWMRoutingDisclaimerAlert.h"
+#import "MWMAlertViewController.h"
+
+static CGFloat const kMinimumOffset = 20.;
+
+@interface MWMRoutingDisclaimerAlert ()
+
+@property(weak, nonatomic) IBOutlet UITextView * textView;
+@property(weak, nonatomic) IBOutlet NSLayoutConstraint * textViewHeight;
+@property(copy, nonatomic) MWMVoidBlock okBlock;
+
+@end
+
+@implementation MWMRoutingDisclaimerAlert
+
++ (instancetype)alertWithOkBlock:(MWMVoidBlock)block
+{
+  MWMRoutingDisclaimerAlert * alert =
+      [NSBundle.mainBundle loadNibNamed:[self className] owner:nil options:nil].firstObject;
+  NSString * message = [NSString stringWithFormat:@"%@\n\n%@\n\n%@\n\n%@\n\n%@",
+                                                  L(@"dialog_routing_disclaimer_priority"),
+                                                  L(@"dialog_routing_disclaimer_precision"),
+                                                  L(@"dialog_routing_disclaimer_recommendations"),
+                                                  L(@"dialog_routing_disclaimer_borders"),
+                                                  L(@"dialog_routing_disclaimer_beware")];
+
+  alert.textView.attributedText =
+      [[NSAttributedString alloc] initWithString:message
+                                      attributes:@{
+                                        NSFontAttributeName : UIFont.regular14,
+                                        NSForegroundColorAttributeName : UIColor.blackSecondaryText
+                                      }];
+  [alert.textView sizeToFit];
+  UIWindow * window = UIApplication.sharedApplication.keyWindow;
+  [alert invalidateTextViewHeight:alert.textView.height withHeight:window.height];
+  alert.okBlock = block;
+  return alert;
+}
+
+- (IBAction)okTap
+{
+  [self close:self.okBlock];
+}
+
+- (IBAction)cancelTap
+{
+  [self close:nil];
+}
+
+- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)orientation
+{
+  UIView * superview = self.superview ?: UIApplication.sharedApplication.keyWindow;
+  CGFloat const height = UIInterfaceOrientationIsLandscape(orientation)
+                             ? MIN(superview.width, superview.height)
+                             : MAX(superview.width, superview.height);
+  [self invalidateTextViewHeight:self.textView.contentSize.height withHeight:height];
+}
+
+- (void)invalidateTextViewHeight:(CGFloat)textViewHeight withHeight:(CGFloat)height
+{
+  self.textViewHeight.constant = [self bounded:textViewHeight withHeight:height];
+  self.textView.scrollEnabled = textViewHeight > self.textViewHeight.constant;
+  [self layoutIfNeeded];
+}
+
+- (CGFloat)bounded:(CGFloat)f withHeight:(CGFloat)h
+{
+  CGFloat const currentHeight = [self.subviews.firstObject height];
+  CGFloat const maximumHeight = h - 2. * kMinimumOffset;
+  CGFloat const availableHeight = maximumHeight - currentHeight;
+  return MIN(f, availableHeight + self.textViewHeight.constant);
+}
+
+@end