added comment for payment, changed intent and added amount ui in operations

frontend/pweb/lib/controllers/payments/amount_field.dart

@@ -8,6 +8,7 @@ import 'package:pshared/utils/money.dart';
 
 import 'package:pweb/models/payment/amount/mode.dart';
 
+
 class PaymentAmountFieldController extends ChangeNotifier {
   static const String _settlementCurrencyCode = 'RUB';
 
@@ -19,9 +20,9 @@ class PaymentAmountFieldController extends ChangeNotifier {
   bool _isSyncingText = false;
   PaymentAmountMode _mode = PaymentAmountMode.debit;
 
-  PaymentAmountFieldController({required double initialAmount})
+  PaymentAmountFieldController({required double? initialAmount})
     : textController = TextEditingController(
-        text: amountToString(initialAmount),
+        text: initialAmount == null ? '' : amountToString(initialAmount),
       );
 
   PaymentAmountMode get mode => _mode;
@@ -57,9 +58,7 @@ class PaymentAmountFieldController extends ChangeNotifier {
   void handleChanged(String value) {
     if (_isSyncingText) return;
     final parsed = _parseAmount(value);
-    if (parsed != null) {
-      _provider?.setAmount(parsed);
-    }
+    _provider?.setAmount(parsed);
   }
 
   void handleModeChanged(PaymentAmountMode value) {
@@ -130,11 +129,11 @@ class PaymentAmountFieldController extends ChangeNotifier {
     return parsed.isNaN ? null : parsed;
   }
 
-  void _syncTextWithAmount(double amount) {
+  void _syncTextWithAmount(double? amount) {
     final parsedText = _parseAmount(textController.text);
-    if (parsedText != null && parsedText == amount) return;
+    if (parsedText == amount) return;
 
-    final nextText = amountToString(amount);
+    final nextText = amount == null ? '' : amountToString(amount);
     _isSyncingText = true;
     textController.value = TextEditingValue(
       text: nextText,

frontend/pweb/lib/controllers/payments/comment_field.dart

@@ -0,0 +1,53 @@
+import 'package:flutter/material.dart';
+
+import 'package:pshared/provider/payment/amount.dart';
+
+
+class PaymentCommentFieldController extends ChangeNotifier {
+  final TextEditingController textController;
+
+  PaymentAmountProvider? _provider;
+  bool _isSyncingText = false;
+
+  PaymentCommentFieldController({required String initialComment})
+    : textController = TextEditingController(text: initialComment);
+
+  void update(PaymentAmountProvider provider) {
+    if (identical(_provider, provider)) {
+      _syncTextWithComment(provider.comment);
+      return;
+    }
+    _provider?.removeListener(_handleProviderChanged);
+    _provider = provider;
+    _provider?.addListener(_handleProviderChanged);
+    _syncTextWithComment(provider.comment);
+  }
+
+  void handleChanged(String value) {
+    if (_isSyncingText) return;
+    _provider?.setComment(value);
+  }
+
+  void _handleProviderChanged() {
+    final provider = _provider;
+    if (provider == null) return;
+    _syncTextWithComment(provider.comment);
+  }
+
+  void _syncTextWithComment(String comment) {
+    if (textController.text == comment) return;
+    _isSyncingText = true;
+    textController.value = TextEditingValue(
+      text: comment,
+      selection: TextSelection.collapsed(offset: comment.length),
+    );
+    _isSyncingText = false;
+  }
+
+  @override
+  void dispose() {
+    _provider?.removeListener(_handleProviderChanged);
+    textController.dispose();
+    super.dispose();
+  }
+}

frontend/pweb/lib/controllers/payments/page.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/foundation.dart';
 
 import 'package:pshared/provider/payment/flow.dart';
+import 'package:pshared/provider/payment/amount.dart';
 import 'package:pshared/provider/payment/provider.dart';
 import 'package:pshared/provider/payment/quotation/quotation.dart';
 import 'package:pshared/provider/recipient/provider.dart';
@@ -14,6 +15,7 @@ class PaymentPageController extends ChangeNotifier {
   PaymentProvider? _payment;
   QuotationProvider? _quotation;
   PaymentFlowProvider? _flow;
+  PaymentAmountProvider? _amount;
   RecipientsProvider? _recipients;
 
   bool _isSending = false;
@@ -26,11 +28,13 @@ class PaymentPageController extends ChangeNotifier {
     PaymentProvider payment,
     QuotationProvider quotation,
     PaymentFlowProvider flow,
+    PaymentAmountProvider amount,
     RecipientsProvider recipients,
   ) {
     _payment = payment;
     _quotation = quotation;
     _flow = flow;
+    _amount = amount;
     _recipients = recipients;
   }
 
@@ -59,6 +63,7 @@ class PaymentPageController extends ChangeNotifier {
     _quotation?.reset();
     _payment?.reset();
     _flow?.setManualPaymentData(null);
+    _amount?.setComment('');
     _recipients?.setCurrentObject(null);
   }