Display transaction error in wallet embed component

src/screens/WalletEmbed.tsx

@@ -1,6 +1,7 @@
 import React, { useEffect, useState, useCallback, useRef } from 'react';
 import { ScrollView, View } from 'react-native';
 import {
+  ActivityIndicator,
   Button,
   Text,
   TextInput,
@@ -193,7 +194,10 @@ export const WalletEmbed = () => {
 
         setIsTxRequested(true);
       } catch (error) {
-        console.error('Error processing transaction request:', error);
+        if (!(error instanceof Error)) {
+          throw error;
+        }
+        setTxError(error.message);
       }
     }, [networksData]);
 
@@ -247,8 +251,10 @@ export const WalletEmbed = () => {
         console.error('No event source available to send message');
       }
     } catch (error) {
-      console.error('Transaction error:', error);
-      setTxError('Transaction failed');
+      if (!(error instanceof Error)) {
+        throw error;
+      }
+      setTxError(error.message);
     } finally {
       setIsTxLoading(false);
     }
@@ -314,7 +320,7 @@ export const WalletEmbed = () => {
               mode="contained"
               onPress={acceptRequestHandler}
               loading={isTxLoading}
-              disabled={!transactionDetails.balance || !fees}
+              disabled={!transactionDetails.balance || !fees || isTxLoading}
             >
               {isTxLoading ? 'Processing' : 'Yes'}
             </Button>
@@ -328,11 +334,21 @@ export const WalletEmbed = () => {
             </Button>
           </View>
         </>
-      ) : null}
+      ) : (
+        <View style={styles.spinnerContainer}>
+          <Text style={styles.LoadingText}>Loading...</Text>
+          <ActivityIndicator size="large" color="#0000ff" />
+        </View>
+      )}
       <TxErrorDialog
         error={txError!}
         visible={!!txError}
-        hideDialog={() => setTxError(null)}
+        hideDialog={() => {
+          setTxError(null)
+          if (window.parent) {
+            window.parent.postMessage('closeIframe', '*');
+          }
+        }}
       />
     </>
   );