Smart quote/dash configuration support in iOS (#13863)

Support for UITextSmartDashesType and UITextSmartQuotesType in iOS

Author: justinmc

shell/platform/darwin/ios/framework/Source/FlutterTextInputPlugin.mm

@@ -159,6 +159,8 @@ @interface FlutterTextInputView : UIView <UITextInput>
 @property(nonatomic) UIKeyboardType keyboardType;
 @property(nonatomic) UIReturnKeyType returnKeyType;
 @property(nonatomic, getter=isSecureTextEntry) BOOL secureTextEntry;
+@property(nonatomic) UITextSmartQuotesType smartQuotesType API_AVAILABLE(ios(11.0));
+@property(nonatomic) UITextSmartDashesType smartDashesType API_AVAILABLE(ios(11.0));
 
 @property(nonatomic, assign) id<FlutterTextInputDelegate> textInputDelegate;
 
@@ -193,6 +195,10 @@ - (instancetype)init {
     _keyboardType = UIKeyboardTypeDefault;
     _returnKeyType = UIReturnKeyDone;
     _secureTextEntry = NO;
+    if (@available(iOS 11.0, *)) {
+      _smartQuotesType = UITextSmartQuotesTypeYes;
+      _smartDashesType = UITextSmartDashesTypeYes;
+    }
   }
 
   return self;
@@ -764,6 +770,18 @@ - (void)setTextInputClient:(int)client withConfiguration:(NSDictionary*)configur
   _activeView.keyboardType = ToUIKeyboardType(inputType);
   _activeView.returnKeyType = ToUIReturnKeyType(configuration[@"inputAction"]);
   _activeView.autocapitalizationType = ToUITextAutoCapitalizationType(configuration);
+  if (@available(iOS 11.0, *)) {
+    NSString* smartDashesType = configuration[@"smartDashesType"];
+    // This index comes from the SmartDashesType enum in the framework.
+    bool smartDashesIsDisabled = smartDashesType && [smartDashesType isEqualToString:@"0"];
+    _activeView.smartDashesType =
+        smartDashesIsDisabled ? UITextSmartDashesTypeNo : UITextSmartDashesTypeYes;
+    NSString* smartQuotesType = configuration[@"smartQuotesType"];
+    // This index comes from the SmartQuotesType enum in the framework.
+    bool smartQuotesIsDisabled = smartQuotesType && [smartQuotesType isEqualToString:@"0"];
+    _activeView.smartQuotesType =
+        smartQuotesIsDisabled ? UITextSmartQuotesTypeNo : UITextSmartQuotesTypeYes;
+  }
   if ([keyboardAppearance isEqualToString:@"Brightness.dark"]) {
     _activeView.keyboardAppearance = UIKeyboardAppearanceDark;
   } else if ([keyboardAppearance isEqualToString:@"Brightness.light"]) {