Use PreferenceDataStore for messageListPreviewLines handling

core/preference/api/src/commonMain/kotlin/net/thunderbird/core/preference/display/visualSettings/DisplayVisualSettings.kt

@@ -9,6 +9,7 @@ const val DISPLAY_SETTINGS_DEFAULT_IS_USE_MESSAGE_VIEW_FIXED_WIDTH_FONT = false
 const val DISPLAY_SETTINGS_DEFAULT_IS_AUTO_FIT_WIDTH = true
 const val DISPLAY_SETTINGS_DEFAULT_IS_SHOW_ANIMATION = true
 const val DISPLAY_SETTINGS_DEFAULT_IS_SHOW_CORRESPONDENT_NAMES = true
+const val DISPLAY_SETTINGS_DEFAULT_MESSAGE_LIST_PREVIEW_LINES = 2
 
 data class DisplayVisualSettings(
     val isShowAnimations: Boolean = DISPLAY_SETTINGS_DEFAULT_IS_SHOW_ANIMATION,
@@ -20,4 +21,5 @@ data class DisplayVisualSettings(
     val isUseBackgroundAsUnreadIndicator: Boolean = DISPLAY_SETTINGS_DEFAULT_IS_USE_BACKGROUND_AS_INDICATOR,
     val isUseMessageViewFixedWidthFont: Boolean = DISPLAY_SETTINGS_DEFAULT_IS_USE_MESSAGE_VIEW_FIXED_WIDTH_FONT,
     val isAutoFitWidth: Boolean = DISPLAY_SETTINGS_DEFAULT_IS_AUTO_FIT_WIDTH,
+    val messageListPreviewLines: Int = DISPLAY_SETTINGS_DEFAULT_MESSAGE_LIST_PREVIEW_LINES,
 )

core/preference/api/src/commonMain/kotlin/net/thunderbird/core/preference/display/visualSettings/DisplayVisualSettingsPreferenceManager.kt

@@ -11,5 +11,6 @@ const val KEY_USE_BACKGROUND_AS_UNREAD_INDICATOR = "isUseBackgroundAsUnreadIndic
 const val KEY_MESSAGE_VIEW_FIXED_WIDTH_FONT = "messageViewFixedWidthFont"
 const val KEY_AUTO_FIT_WIDTH = "autofitWidth"
 const val KEY_SHOW_CONTACT_PICTURE = "showContactPicture"
+const val KEY_MESSAGE_LIST_VIEW_PREVIEW_LINES = "messageListPreviewLines"
 
 interface DisplayVisualSettingsPreferenceManager : PreferenceManager<DisplayVisualSettings>

core/preference/impl/src/commonMain/kotlin/net/thunderbird/core/preference/display/visualSettings/DefaultDisplayVisualSettingsPreferenceManager.kt

@@ -70,6 +70,10 @@ class DefaultDisplayVisualSettingsPreferenceManager(
             KEY_SHOW_CONTACT_PICTURE,
             DISPLAY_SETTINGS_DEFAULT_IS_SHOW_CONTACT_PICTURE,
         ),
+        messageListPreviewLines = storage.getInt(
+            KEY_MESSAGE_LIST_VIEW_PREVIEW_LINES,
+            DISPLAY_SETTINGS_DEFAULT_MESSAGE_LIST_PREVIEW_LINES,
+        ),
     )
 
     private fun writeConfig(config: DisplayVisualSettings) {
@@ -103,6 +107,10 @@ class DefaultDisplayVisualSettingsPreferenceManager(
                     KEY_SHOW_CORRESPONDENT_NAMES,
                     config.isShowCorrespondentNames,
                 )
+                storageEditor.putInt(
+                    KEY_MESSAGE_LIST_VIEW_PREVIEW_LINES,
+                    config.messageListPreviewLines,
+                )
                 storageEditor.commit().also { commited ->
                     logger.verbose(TAG) { "writeConfig: storageEditor.commit() resulted in: $commited" }
                 }

legacy/core/src/main/java/com/fsck/k9/K9.kt

@@ -143,9 +143,6 @@ object K9 : KoinComponent {
     @JvmStatic
     var messageListDensity: UiDensity = UiDensity.Default
 
-    @JvmStatic
-    var messageListPreviewLines = 2
-
     @JvmStatic
     var contactNameColor = 0xFF1093F5.toInt()
 
@@ -233,7 +230,6 @@ object K9 : KoinComponent {
     @Suppress("LongMethod")
     fun loadPrefs(storage: Storage) {
         isShowAccountSelector = storage.getBoolean("showAccountSelector", true)
-        messageListPreviewLines = storage.getInt("messageListPreviewLines", 2)
 
         messageListDensity = storage.getEnum("messageListDensity", UiDensity.Default)
         contactNameColor = storage.getInt("registeredNameColor", 0xFF1093F5.toInt())
@@ -294,7 +290,6 @@ object K9 : KoinComponent {
     internal fun save(editor: StorageEditor) {
         editor.putEnum("messageListDensity", messageListDensity)
         editor.putBoolean("showAccountSelector", isShowAccountSelector)
-        editor.putInt("messageListPreviewLines", messageListPreviewLines)
         editor.putInt("registeredNameColor", contactNameColor)
         editor.putEnum("messageViewPostMarkAsUnreadAction", messageViewPostMarkAsUnreadNavigation)
 

legacy/ui/legacy/src/main/java/com/fsck/k9/activity/MessageListActivityConfig.kt

@@ -58,7 +58,7 @@ data class MessageListActivityConfig(
                 isShowComposeButton = settings.display.inboxSettings.isShowComposeButtonOnMessageList,
                 contactNameColor = K9.contactNameColor,
                 messageViewTheme = settings.display.coreSettings.messageViewTheme,
-                messageListPreviewLines = K9.messageListPreviewLines,
+                messageListPreviewLines = settings.display.visualSettings.messageListPreviewLines,
                 messageListDensity = K9.messageListDensity,
                 splitViewMode = settings.display.coreSettings.splitViewMode,
                 fontSizeMessageListSubject = K9.fontSizes.messageListSubject,

legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messagelist/MessageListFragment.kt

@@ -795,7 +795,7 @@ class MessageListFragment :
     private val messageListAppearance: MessageListAppearance
         get() = MessageListAppearance(
             fontSizes = K9.fontSizes,
-            previewLines = K9.messageListPreviewLines,
+            previewLines = generalSettingsManager.getConfig().display.visualSettings.messageListPreviewLines,
             stars = !isOutbox && generalSettingsManager.getConfig().display.inboxSettings.isShowMessageListStars,
             senderAboveSubject = generalSettingsManager
                 .getConfig()

legacy/ui/legacy/src/main/java/com/fsck/k9/ui/settings/general/GeneralSettingsDataStore.kt

@@ -70,6 +70,7 @@ class GeneralSettingsDataStore(
 
             "disable_notifications_during_quiet_time" -> !generalSettingsManager.getConfig()
                 .notification.isNotificationDuringQuietTimeEnabled
+
             "privacy_hide_useragent" -> generalSettingsManager.getConfig().privacy.isHideUserAgent
             "privacy_hide_timezone" -> generalSettingsManager.getConfig().privacy.isHideTimeZone
             "debug_logging" -> generalSettingsManager.getConfig().debugging.isDebugLoggingEnabled
@@ -153,7 +154,9 @@ class GeneralSettingsDataStore(
                 generalSettingsManager.getConfig().display.coreSettings.messageViewTheme,
             )
 
-            "messagelist_preview_lines" -> K9.messageListPreviewLines.toString()
+            "messagelist_preview_lines" -> generalSettingsManager.getConfig()
+                .display.visualSettings.messageListPreviewLines.toString()
+
             "splitview_mode" -> generalSettingsManager.getConfig().display.coreSettings.splitViewMode.name
             "notification_quick_delete" -> K9.notificationQuickDeleteBehaviour.name
             "lock_screen_notification_visibility" -> K9.lockScreenNotificationVisibility.name
@@ -191,7 +194,7 @@ class GeneralSettingsDataStore(
             "theme" -> setTheme(value)
             "message_compose_theme" -> setMessageComposeTheme(value)
             "messageViewTheme" -> setMessageViewTheme(value)
-            "messagelist_preview_lines" -> K9.messageListPreviewLines = value.toInt()
+            "messagelist_preview_lines" -> setMessageListPreviewLines(value.toInt())
             "splitview_mode" -> setSplitViewModel(SplitViewMode.valueOf(value.uppercase()))
             "notification_quick_delete" -> {
                 K9.notificationQuickDeleteBehaviour = K9.NotificationQuickDelete.valueOf(value)
@@ -332,6 +335,19 @@ class GeneralSettingsDataStore(
         }
     }
 
+    private fun setMessageListPreviewLines(previewLines: Int) {
+        skipSaveSettings = true
+        generalSettingsManager.update { settings ->
+            settings.copy(
+                display = settings.display.copy(
+                    visualSettings = settings.display.visualSettings.copy(
+                        messageListPreviewLines = previewLines,
+                    ),
+                ),
+            )
+        }
+    }
+
     private fun setSplitViewModel(mode: SplitViewMode) {
         skipSaveSettings = true
         generalSettingsManager.update { settings ->