UX improvements: fix nav bar overlap, vault layout overhaul, service autocomplete

app/src/main/java/cz/bugsy/passwordzebra/deterministic/DeterministicViewModel.kt

@@ -24,6 +24,7 @@ data class DeterministicState(
     val biometricEnabled: Boolean = false,
     val lockTimeoutMinutes: Int = 5,
     val showRotateWarning: Boolean = false,
+    val serviceHistory: List<String> = emptyList(),
 ) {
     // CharArray doesn't support structural equality; override manually
     override fun equals(other: Any?): Boolean {
@@ -37,7 +38,8 @@ data class DeterministicState(
             clipboardTimerSeconds == other.clipboardTimerSeconds &&
             biometricEnabled == other.biometricEnabled &&
             lockTimeoutMinutes == other.lockTimeoutMinutes &&
-            showRotateWarning == other.showRotateWarning
+            showRotateWarning == other.showRotateWarning &&
+            serviceHistory == other.serviceHistory
     }
 
     override fun hashCode(): Int {
@@ -50,6 +52,7 @@ data class DeterministicState(
         result = 31 * result + biometricEnabled.hashCode()
         result = 31 * result + lockTimeoutMinutes
         result = 31 * result + showRotateWarning.hashCode()
+        result = 31 * result + serviceHistory.hashCode()
         return result
     }
 }
@@ -72,6 +75,7 @@ class DeterministicViewModel(app: Application) : AndroidViewModel(app) {
             it.copy(
                 biometricEnabled = settingsPrefs.getBoolean("biometric_enabled", false),
                 lockTimeoutMinutes = settingsPrefs.getInt("lock_timeout_minutes", 5),
+                serviceHistory = historyRepository.getNames(),
             )
         }
     }
@@ -99,7 +103,7 @@ class DeterministicViewModel(app: Application) : AndroidViewModel(app) {
         )
         historyRepository.upsert(s.serviceName)
         counterRepository.upsert(s.serviceName, counter)
-        _state.update { it.copy(generatedPassword = password) }
+        _state.update { it.copy(generatedPassword = password, serviceHistory = historyRepository.getNames()) }
     }
 
     fun rotatePassword() {

app/src/main/java/cz/bugsy/passwordzebra/ui/navigation/AppNavigation.kt

@@ -1,5 +1,7 @@
 package cz.bugsy.passwordzebra.ui.navigation
 
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.padding
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Lock
 import androidx.compose.material3.Icon
@@ -9,6 +11,7 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.lifecycle.viewmodel.compose.viewModel
@@ -88,7 +91,8 @@ fun AppNavigation() {
                 }
             }
         },
-    ) { _ ->
+    ) { innerPadding ->
+        Box(modifier = Modifier.padding(bottom = innerPadding.calculateBottomPadding())) {
         NavHost(navController = navController, startDestination = ROUTE_WORD_GENERATOR) {
             composable(ROUTE_WORD_GENERATOR) {
                 WordGeneratorScreen()
@@ -124,3 +128,4 @@ fun AppNavigation() {
         }
         }
     }
+}

app/src/main/java/cz/bugsy/passwordzebra/ui/screens/DeterministicScreen.kt

@@ -1,6 +1,5 @@
 package cz.bugsy.passwordzebra.ui.screens
 
-import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
@@ -12,6 +11,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -20,6 +20,7 @@ import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ContentCopy
 import androidx.compose.material.icons.filled.History
+import androidx.compose.material.icons.filled.Password
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material.icons.filled.Visibility
 import androidx.compose.material.icons.filled.VisibilityOff
@@ -27,11 +28,13 @@ import androidx.compose.material.icons.filled.Warning
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.FilledIconButton
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.OutlinedButton
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
@@ -40,6 +43,9 @@ import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
@@ -68,6 +74,8 @@ fun DeterministicScreen(
         return
     }
 
+    var showRotateConfirmDialog by remember { mutableStateOf(false) }
+
     if (state.showRotateWarning) {
         AlertDialog(
             onDismissRequest = { viewModel.dismissRotateWarning() },
@@ -112,6 +120,32 @@ fun DeterministicScreen(
         )
     }
 
+    if (showRotateConfirmDialog) {
+        AlertDialog(
+            onDismissRequest = { showRotateConfirmDialog = false },
+            title = { Text(stringResource(R.string.det_rotate_confirm_title)) },
+            text = { Text(stringResource(R.string.det_rotate_confirm_body)) },
+            confirmButton = {
+                Button(
+                    onClick = {
+                        showRotateConfirmDialog = false
+                        viewModel.rotatePassword()
+                    },
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = MaterialTheme.colorScheme.error,
+                    ),
+                ) {
+                    Text(stringResource(R.string.det_rotate_confirm_ok))
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showRotateConfirmDialog = false }) {
+                    Text(stringResource(R.string.det_rotate_confirm_cancel))
+                }
+            },
+        )
+    }
+
     Scaffold(
         topBar = {
             TopAppBar(
@@ -137,45 +171,7 @@ fun DeterministicScreen(
         ) {
             Spacer(modifier = Modifier.height(4.dp))
 
-            // Service name
+            // Generated password box — shown at top once available
-            OutlinedTextField(
-                value = state.serviceName,
-                onValueChange = { viewModel.updateServiceName(it) },
-                label = { Text(stringResource(R.string.det_service_name)) },
-                modifier = Modifier.fillMaxWidth(),
-                singleLine = true,
-            )
-
-            // Master password
-            OutlinedTextField(
-                value = String(state.masterPassword),
-                onValueChange = { viewModel.updateMasterPassword(it.toCharArray()) },
-                label = { Text(stringResource(R.string.det_master_password)) },
-                modifier = Modifier.fillMaxWidth(),
-                singleLine = true,
-                visualTransformation = if (state.masterPasswordVisible) VisualTransformation.None
-                else PasswordVisualTransformation(),
-                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
-                trailingIcon = {
-                    IconButton(onClick = { viewModel.toggleMasterPasswordVisible() }) {
-                        Icon(
-                            imageVector = if (state.masterPasswordVisible) Icons.Default.VisibilityOff
-                            else Icons.Default.Visibility,
-                            contentDescription = stringResource(R.string.det_toggle_pw_visibility),
-                        )
-                    }
-                },
-            )
-
-            // Generate button
-            Button(
-                onClick = { viewModel.generate() },
-                modifier = Modifier.fillMaxWidth(),
-            ) {
-                Text(stringResource(R.string.det_generate))
-            }
-
-            // Generated password box
             if (state.generatedPassword.isNotEmpty()) {
                 Box(
                     modifier = Modifier
@@ -219,21 +215,89 @@ fun DeterministicScreen(
                     }
                 }
 
-                // Rotate password button — shown only after a password has been generated
+                // Inline rotate button — right-aligned, error color, confirmation dialog
-                OutlinedButton(
+                TextButton(
-                    onClick = { viewModel.rotatePassword() },
+                    onClick = { showRotateConfirmDialog = true },
-                    modifier = Modifier.fillMaxWidth(),
+                    modifier = Modifier.align(Alignment.End),
-                    colors = ButtonDefaults.outlinedButtonColors(
+                    colors = ButtonDefaults.textButtonColors(contentColor = MaterialTheme.colorScheme.error),
-                        contentColor = MaterialTheme.colorScheme.error,
-                    ),
-                    border = BorderStroke(1.dp, MaterialTheme.colorScheme.error),
                 ) {
-                    Icon(Icons.Default.Warning, contentDescription = null)
+                    Icon(Icons.Default.Warning, contentDescription = null, modifier = Modifier.size(16.dp))
-                    Spacer(modifier = Modifier.width(8.dp))
+                    Spacer(Modifier.width(4.dp))
-                    Text(stringResource(R.string.det_rotate_password))
+                    Text(stringResource(R.string.det_rotate_inline_label))
                 }
             }
 
+            // Service name with autocomplete from history
+            var expanded by remember { mutableStateOf(false) }
+            val filteredHistory = remember(state.serviceHistory, state.serviceName) {
+                state.serviceHistory.filter {
+                    state.serviceName.isBlank() || it.contains(state.serviceName, ignoreCase = true)
+                }
+            }
+
+            ExposedDropdownMenuBox(
+                expanded = expanded && filteredHistory.isNotEmpty(),
+                onExpandedChange = { expanded = it },
+            ) {
+                OutlinedTextField(
+                    value = state.serviceName,
+                    onValueChange = { viewModel.updateServiceName(it); expanded = true },
+                    label = { Text(stringResource(R.string.det_service_name)) },
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .menuAnchor(),
+                    singleLine = true,
+                )
+                ExposedDropdownMenu(
+                    expanded = expanded && filteredHistory.isNotEmpty(),
+                    onDismissRequest = { expanded = false },
+                ) {
+                    filteredHistory.forEach { name ->
+                        DropdownMenuItem(
+                            text = { Text(name) },
+                            onClick = { viewModel.updateServiceName(name); expanded = false },
+                        )
+                    }
+                }
+            }
+
+            Spacer(Modifier.height(8.dp))
+
+            // Master password
+            OutlinedTextField(
+                value = String(state.masterPassword),
+                onValueChange = { viewModel.updateMasterPassword(it.toCharArray()) },
+                label = { Text(stringResource(R.string.det_master_password)) },
+                modifier = Modifier.fillMaxWidth(),
+                singleLine = true,
+                visualTransformation = if (state.masterPasswordVisible) VisualTransformation.None
+                else PasswordVisualTransformation(),
+                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
+                trailingIcon = {
+                    IconButton(onClick = { viewModel.toggleMasterPasswordVisible() }) {
+                        Icon(
+                            imageVector = if (state.masterPasswordVisible) Icons.Default.VisibilityOff
+                            else Icons.Default.Visibility,
+                            contentDescription = stringResource(R.string.det_toggle_pw_visibility),
+                        )
+                    }
+                },
+            )
+
+            // Square icon generate button
+            FilledIconButton(
+                onClick = { viewModel.generate() },
+                modifier = Modifier
+                    .align(Alignment.CenterHorizontally)
+                    .size(60.dp),
+                shape = RoundedCornerShape(16.dp),
+            ) {
+                Icon(
+                    imageVector = Icons.Filled.Password,
+                    contentDescription = stringResource(R.string.det_generate),
+                )
+            }
+
             Spacer(modifier = Modifier.height(16.dp))
         }
     }

app/src/main/res/values-cs/strings.xml

@@ -32,6 +32,11 @@
     <string name="det_rotate_warning_body">Pro tuto službu bylo vygenerováno nové heslo.\n\nVáš záložní QR kód tuto rotaci nezachycuje. Pokud ztratíte zařízení bez aktualizace QR kódu, TOTO HESLO BUDE TRVALE ZTRACENO — žádným jiným způsobem ho nelze obnovit.\n\nOstatní hesla nejsou dotčena.</string>
     <string name="det_rotate_go_to_export">Aktualizovat QR zálohu nyní</string>
     <string name="det_rotate_later">Udělám to později (riskantní)</string>
+    <string name="det_rotate_inline_label">Bylo heslo kompromitováno? Rotovat!</string>
+    <string name="det_rotate_confirm_title">Rotovat heslo?</string>
+    <string name="det_rotate_confirm_body">Tato akce zvýší čítač pro tuto službu. Předchozí heslo již nebude generováno.</string>
+    <string name="det_rotate_confirm_ok">Rotovat</string>
+    <string name="det_rotate_confirm_cancel">Zrušit</string>
 
     <!-- Historie služeb -->
     <string name="det_history_title">Historie služeb</string>

app/src/main/res/values/strings.xml

@@ -31,6 +31,11 @@
     <string name="det_rotate_warning_body">A new password has been generated for this service.\n\nYour QR backup no longer reflects this rotation. If you lose this device without updating the QR code, THIS PASSWORD WILL BE PERMANENTLY LOST — it cannot be recovered any other way.\n\nYour other passwords are not affected.</string>
     <string name="det_rotate_go_to_export">Update QR Backup Now</string>
     <string name="det_rotate_later">I\'ll do it later (risky)</string>
+    <string name="det_rotate_inline_label">Password compromised? Rotate!</string>
+    <string name="det_rotate_confirm_title">Rotate password?</string>
+    <string name="det_rotate_confirm_body">This will increment the counter for this service. The previous password will no longer be generated.</string>
+    <string name="det_rotate_confirm_ok">Rotate</string>
+    <string name="det_rotate_confirm_cancel">Cancel</string>
 
     <!-- Service history -->
     <string name="det_history_title">Service History</string>