[WIP] Added autofill functionality

shell/platform/android/io/flutter/embedding/engine/systemchannels/TextInputChannel.java

@@ -286,7 +286,8 @@ public static Configuration fromJson(@NonNull JSONObject json) throws JSONExcept
           TextCapitalization.fromValue(json.getString("textCapitalization")),
           InputType.fromJson(json.getJSONObject("inputType")),
           inputAction,
-          json.isNull("actionLabel") ? null : json.getString("actionLabel")
+          json.isNull("actionLabel") ? null : json.getString("actionLabel"),
+          json.isNull("textContentType") ? null : TextContentType.fromJson(json.getJSONObject("textContentType"))
       );
     }
 
@@ -328,6 +329,8 @@ private static Integer inputActionFromTextInputAction(@NonNull String inputActio
     public final Integer inputAction;
     @Nullable
     public final String actionLabel;
+    @Nullable
+    public final TextContentType textContentType;
 
     public Configuration(
         boolean obscureText,
@@ -336,7 +339,8 @@ public Configuration(
         @NonNull TextCapitalization textCapitalization,
         @NonNull InputType inputType,
         @Nullable Integer inputAction,
-        @Nullable String actionLabel
+        @Nullable String actionLabel,
+        @Nullable TextContentType textContentType
     ) {
       this.obscureText = obscureText;
       this.autocorrect = autocorrect;
@@ -345,6 +349,7 @@ public Configuration(
       this.inputType = inputType;
       this.inputAction = inputAction;
       this.actionLabel = actionLabel;
+      this.textContentType = textContentType;
     }
   }
 
@@ -406,6 +411,23 @@ static TextInputType fromValue(@NonNull String encodedName) throws NoSuchFieldEx
     }
   }
 
+  /**
+   * Types of text content for auto-fill functionality
+   */
+  public static class TextContentType {
+    @NonNull
+    public static TextContentType fromJson(@NonNull JSONObject json) throws JSONException, NoSuchFieldException {
+      return new TextContentType(json.getString("rawValue"));
+    }
+
+    @NonNull
+    public final String rawValue;
+
+    public TextContentType(@NonNull String rawValue) {
+      this.rawValue = rawValue;
+    }
+  }
+
   /**
    * Text capitalization schemes.
    */

shell/platform/android/io/flutter/plugin/editing/TextInputPlugin.java

@@ -230,6 +230,12 @@ public InputConnection createInputConnection(View view, EditorInfo outAttrs) {
             outAttrs.actionId = enterAction;
         }
         outAttrs.imeOptions |= enterAction;
+
+        String autofillHintValue = configuration.textContentType.rawValue;
+        if (autofillHintValue != null) {
+          String[] autofillHints = {autofillHintValue};
+          view.setAutofillHints(autofillHints);
+        }
 
         InputConnectionAdaptor connection = new InputConnectionAdaptor(
             view,

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

@@ -45,6 +45,75 @@ static UITextAutocapitalizationType ToUITextAutoCapitalizationType(NSDictionary*
   return UITextAutocapitalizationTypeNone;
 }
 
+static UITextContentType ToUITextContentType(NSDictionary* type) API_AVAILABLE(ios(10.0)) {
+  NSDictionary* contentTypeDictionary = type[@"textContentType"];
+  NSString* contentType = contentTypeDictionary[@"name"];
+
+  if ([contentType isEqualToString:@"TextContentType.personName"])
+    return UITextContentTypeName;
+  else if ([contentType isEqualToString:@"TextContentType.personNamePrefix"])
+    return UITextContentTypeNamePrefix;
+  else if ([contentType isEqualToString:@"TextContentType.personGivenName"])
+    return UITextContentTypeGivenName;
+  else if ([contentType isEqualToString:@"TextContentType.personMiddleName"])
+    return UITextContentTypeMiddleName;
+  else if ([contentType isEqualToString:@"TextContentType.personFamilyName"])
+    return UITextContentTypeFamilyName;
+  else if ([contentType isEqualToString:@"TextContentType.personNameSuffix"])
+    return UITextContentTypeNameSuffix;
+  else if ([contentType isEqualToString:@"TextContentType.postalAddress"])
+    return UITextContentTypeFullStreetAddress;
+  else if ([contentType isEqualToString:@"TextContentType.streetAddress"])
+    return UITextContentTypeStreetAddressLine1;
+  else if ([contentType isEqualToString:@"TextContentType.extendedAddress"])
+    return UITextContentTypeStreetAddressLine2;
+  else if ([contentType isEqualToString:@"TextContentType.addressLocality"])
+    return UITextContentTypeAddressCity;
+  else if ([contentType isEqualToString:@"TextContentType.addressRegion"])
+    return UITextContentTypeAddressState;
+  else if ([contentType isEqualToString:@"TextContentType.addressCountry"])
+    return UITextContentTypeCountryName;
+  else if ([contentType isEqualToString:@"TextContentType.postalCode"])
+    return UITextContentTypePostalCode;
+  else if ([contentType isEqualToString:@"TextContentType.phoneNumber"])
+    return UITextContentTypeTelephoneNumber;
+  else if ([contentType isEqualToString:@"TextContentType.emailAddress"])
+    return UITextContentTypeEmailAddress;
+  else if ([contentType isEqualToString:@"TextContentType.url"])
+    return UITextContentTypeURL;
+  else if ([contentType isEqualToString:@"TextContentType.creditCardNumber"])
+    return UITextContentTypeCreditCardNumber;
+  else if ([contentType isEqualToString:@"TextContentType.username"]) {
+    if (@available(iOS 11.0, *)) {
+      return UITextContentTypeUsername;
+    } else {
+      return nil;
+    }
+  } else if ([contentType isEqualToString:@"TextContentType.password"]) {
+    if (@available(iOS 11.0, *)) {
+      return UITextContentTypePassword;
+    } else {
+      return nil;
+    }
+  } else if ([contentType isEqualToString:@"TextContentType.newPassword"]) {
+    if (@available(iOS 12.0, *)) {
+      return UITextContentTypeNewPassword;
+    } else {
+      return nil;
+    }
+  } else if ([contentType isEqualToString:@"TextContentType.smsOTPCode"]) {
+    if (@available(iOS 12.0, *)) {
+      return UITextContentTypeOneTimeCode;
+    } else {
+      return nil;
+    }
+  }
+
+  // If we don't have a known match, try and cast it from the raw value
+  NSString* rawValue = contentTypeDictionary[@"rawValue"];
+  return (UITextContentType)rawValue;
+}
+
 static UIReturnKeyType ToUIReturnKeyType(NSString* inputType) {
   // Where did the term "unspecified" come from? iOS has a "default" and Android
   // has "unspecified." These 2 terms seem to mean the same thing but we need
@@ -154,6 +223,7 @@ @interface FlutterTextInputView : UIView <UITextInput>
 @property(nonatomic) UITextAutocapitalizationType autocapitalizationType;
 @property(nonatomic) UITextAutocorrectionType autocorrectionType;
 @property(nonatomic) UITextSpellCheckingType spellCheckingType;
+@property(nonatomic, copy) UITextContentType textContentType API_AVAILABLE(ios(10.0));
 @property(nonatomic) BOOL enablesReturnKeyAutomatically;
 @property(nonatomic) UIKeyboardAppearance keyboardAppearance;
 @property(nonatomic) UIKeyboardType keyboardType;
@@ -195,6 +265,7 @@ - (instancetype)init {
     _keyboardType = UIKeyboardTypeDefault;
     _returnKeyType = UIReturnKeyDone;
     _secureTextEntry = NO;
+    _textContentType = nil;
     if (@available(iOS 11.0, *)) {
       _smartQuotesType = UITextSmartQuotesTypeYes;
       _smartDashesType = UITextSmartDashesTypeYes;
@@ -793,6 +864,9 @@ - (void)setTextInputClient:(int)client withConfiguration:(NSDictionary*)configur
   _activeView.autocorrectionType = autocorrect && ![autocorrect boolValue]
                                        ? UITextAutocorrectionTypeNo
                                        : UITextAutocorrectionTypeDefault;
+  if (@available(iOS 10.0, *)) {
+    _activeView.textContentType = ToUITextContentType(configuration);
+  }
   [_activeView setTextInputClient:client];
   [_activeView reloadInputViews];
 }