Changed way for validation of seed phrase. Added multi words to text field on restore from seed screen.

lib/src/screens/restore/restore_wallet_from_seed_page.dart

@@ -48,17 +48,12 @@ class RestoreFromSeedForm extends StatefulWidget {
 
 class _RestoreFromSeedFormState extends State<RestoreFromSeedForm> {
   final _seedKey = GlobalKey<SeedWidgetState>();
-  bool _reactionSet = false;
-
   void clear() => _seedKey.currentState.clear();
 
   @override
   Widget build(BuildContext context) {
     final walletRestorationStore = Provider.of<WalletRestorationStore>(context);
 
-    WidgetsBinding.instance.addPostFrameCallback(
-        (_) => _setReactions(context, walletRestorationStore));
-
     return GestureDetector(
       onTap: () =>
           SystemChannels.textInput.invokeMethod<void>('TextInput.hide'),
@@ -74,22 +69,4 @@ class _RestoreFromSeedFormState extends State<RestoreFromSeedForm> {
       ),
     );
   }
-
-  void _setReactions(BuildContext context, WalletRestorationStore store) {
-    if (_reactionSet) {
-      return;
-    }
-
-    reaction((_) => store.errorMessage, (String errorMessage) {
-      if (errorMessage == null || errorMessage.isEmpty) {
-        _seedKey.currentState.validated();
-      } else {
-        _seedKey.currentState.invalidate();
-      }
-
-      _seedKey.currentState.setErrorMessage(errorMessage);
-    });
-
-    _reactionSet = true;
-  }
 }

lib/src/widgets/primary_button.dart

@@ -8,10 +8,11 @@ class PrimaryButton extends StatelessWidget {
       @required this.text,
       @required this.color,
       @required this.borderColor,
-      
-      this.isDisabled = false});
+      this.isDisabled = false,
+      this.onDisabledPressed});
 
   final VoidCallback onPressed;
+  final VoidCallback onDisabledPressed;
   final Color color;
   final Color borderColor;
   final String text;
@@ -23,15 +24,19 @@ class PrimaryButton extends StatelessWidget {
         minWidth: double.infinity,
         height: 56.0,
         child: FlatButton(
-          onPressed: isDisabled ? null : onPressed,
-          color: isDisabled ? Colors.grey : color,
+          onPressed: isDisabled
+              ? (onDisabledPressed != null ? onDisabledPressed : null)
+              : onPressed,
+          color: isDisabled ? Colors.transparent : color,
           shape: RoundedRectangleBorder(
               side: BorderSide(color: borderColor),
               borderRadius: BorderRadius.circular(10.0)),
           child: Text(text,
               style: TextStyle(
                   fontSize: 16.0,
-                  color: isDisabled ? Palette.darkGrey :  Theme.of(context).primaryTextTheme.button.color)),
+                  color: isDisabled
+                      ? Palette.darkGrey
+                      : Theme.of(context).primaryTextTheme.button.color)),
         ));
   }
 }

lib/src/widgets/seed_widget.dart

@@ -27,8 +27,9 @@ class SeedWidgetState extends State<SeedWidget> {
   bool isValid;
   String errorMessage;
 
-  MnemoticItem currentMnemotic;
+  List<MnemoticItem> currentMnemotics;
   bool isCurrentMnemoticValid;
+  String _errorMessage;
 
   @override
   void initState() {
@@ -49,14 +50,6 @@ class SeedWidgetState extends State<SeedWidget> {
     }
   }
 
-  void deleteMnemotic(MnemoticItem item) {
-    setState(() => items.remove(item));
-
-    if (widget.onMnemoticChange != null) {
-      widget.onMnemoticChange(items);
-    }
-  }
-
   void mnemoticFromText(String text) {
     final splitted = text.split(' ');
 
@@ -78,7 +71,7 @@ class SeedWidgetState extends State<SeedWidget> {
   void selectMnemotic(MnemoticItem item) {
     setState(() {
       selectedItem = item;
-      currentMnemotic = item;
+      currentMnemotics = [item];
 
       _seedController
         ..text = item.text
@@ -106,18 +99,6 @@ class SeedWidgetState extends State<SeedWidget> {
     }
   }
 
-  void onFieldSubmitted(String text) {
-    if (text.isEmpty || text == null) {
-      return;
-    }
-
-    if (selectedItem != null) {
-      editTextOfSelectedMnemotic(text);
-    } else {
-      addMnemotic(text);
-    }
-  }
-
   void clear() {
     setState(() {
       items = [];
@@ -149,31 +130,68 @@ class SeedWidgetState extends State<SeedWidget> {
 
   void changeCurrentMnemotic(String text) {
     setState(() {
+      final trimmedText = text.trim();
+      final splitted = trimmedText.split(' ');
+      _errorMessage = null;
+
       if (text == null) {
-        currentMnemotic = null;
+        currentMnemotics = [];
         isCurrentMnemoticValid = false;
         return;
       }
 
-      currentMnemotic = MnemoticItem(text: text, dic: EnglishMnemonics.words);
-      isCurrentMnemoticValid = currentMnemotic.isCorrect();
+      currentMnemotics = splitted
+          .map((text) => MnemoticItem(text: text, dic: EnglishMnemonics.words))
+          .toList();
+
+      bool isValid = true;
+
+      for (final word in currentMnemotics) {
+        print('word ${word.text}');
+        isValid = word.isCorrect();
+
+        if (!isValid) {
+          break;
+        }
+      }
+
+      isCurrentMnemoticValid = isValid;
     });
   }
 
   void saveCurrentMnemoticToItems() {
     setState(() {
       if (selectedItem != null) {
-        selectedItem.changeText(currentMnemotic.text);
+        selectedItem.changeText(currentMnemotics.first.text.trim());
         selectedItem = null;
       } else {
-        items.add(currentMnemotic);
+        items.addAll(currentMnemotics);
       }
 
-      currentMnemotic = null;
+      currentMnemotics = [];
       _seedController.text = '';
     });
   }
 
+  void showErrorIfExist() {
+    setState(() => _errorMessage =
+        !isCurrentMnemoticValid ? S.current.incorrect_seed : null);
+  }
+
+  bool isSeedValid() {
+    bool isValid;
+
+    for (final item in items) {
+      isValid = item.isCorrect();
+
+      if (!isValid) {
+        break;
+      }
+    }
+
+    return isValid;
+  }
+
   @override
   Widget build(BuildContext context) {
     return Container(
@@ -258,6 +276,7 @@ class SeedWidgetState extends State<SeedWidget> {
                           hintStyle:
                               TextStyle(color: Theme.of(context).hintColor),
                           hintText: S.of(context).restore_from_seed_placeholder,
+                          errorText: _errorMessage,
                           focusedBorder: UnderlineInputBorder(
                               borderSide: BorderSide(
                                   color: Palette.cakeGreen, width: 2.0)),
@@ -273,6 +292,7 @@ class SeedWidgetState extends State<SeedWidget> {
                       child: (selectedItem == null && items.length == maxLength)
                           ? PrimaryButton(
                               text: S.of(context).restore_next,
+                              isDisabled: !isSeedValid(),
                               onPressed: () => widget.onFinish != null
                                   ? widget.onFinish()
                                   : null,
@@ -291,6 +311,7 @@ class SeedWidgetState extends State<SeedWidget> {
                               onPressed: () => isCurrentMnemoticValid
                                   ? saveCurrentMnemoticToItems()
                                   : null,
+                              onDisabledPressed: () => showErrorIfExist(),
                               isDisabled: !isCurrentMnemoticValid,
                               color: PaletteDark.darkThemeBlueButton,
                               borderColor: Palette.brightBlue))