#2106 refactor: move auto-switch IME logic to ShowInputMethodPickerUseCase

Move isAutoSwitchImeEnabled flow and disableAutoSwitch() out of
FixKeyEventActionDelegate (where they don't belong) and into
ShowInputMethodPickerUseCase which owns all IME picker concerns.
KeyMapListViewModel now reads/writes through the use case.

https://claude.ai/code/session_01AdijnJnpbsCqPDTYobwnLa

Author: claude

base/src/main/java/io/github/sds100/keymapper/base/actions/keyevent/FixKeyEventActionDelegate.kt

@@ -63,10 +63,6 @@ class FixKeyEventActionDelegateImpl @Inject constructor(
         preferenceRepository.get(Keys.keyEventActionsUseSystemBridge)
             .map { it ?: PreferenceDefaults.KEY_EVENT_ACTIONS_USE_SYSTEM_BRIDGE }
 
-    override val isAutoSwitchImeEnabled: Flow<Boolean> =
-        preferenceRepository.get(Keys.changeImeOnInputFocus)
-            .map { it ?: PreferenceDefaults.CHANGE_IME_ON_INPUT_FOCUS }
-
     private val showBottomSheet: MutableStateFlow<Boolean> = MutableStateFlow(false)
 
     @OptIn(ExperimentalCoroutinesApi::class)
@@ -170,7 +166,6 @@ class FixKeyEventActionDelegateImpl @Inject constructor(
 
 interface FixKeyEventActionDelegate {
     val fixKeyEventActionState: StateFlow<FixKeyEventActionState?>
-    val isAutoSwitchImeEnabled: Flow<Boolean>
 
     fun showFixKeyEventActionBottomSheet()
     fun dismissFixKeyEventActionBottomSheet()

base/src/main/java/io/github/sds100/keymapper/base/home/KeyMapListViewModel.kt

@@ -908,7 +908,7 @@ class KeyMapListViewModel(
 
     fun showInputMethodPicker() {
         coroutineScope.launch {
-            val autoSwitchEnabled = isAutoSwitchImeEnabled.first()
+            val autoSwitchEnabled = showInputMethodPickerUseCase.isAutoSwitchImeEnabled.first()
 
             if (autoSwitchEnabled) {
                 val response = showDialog(
@@ -923,7 +923,7 @@ class KeyMapListViewModel(
 
                 if (response != DialogResponse.POSITIVE) return@launch
 
-                onAutoSwitchImeCheckedChange(false)
+                showInputMethodPickerUseCase.disableAutoSwitch()
             }
 
             showInputMethodPickerUseCase.show(fromForeground = true)

base/src/main/java/io/github/sds100/keymapper/base/system/inputmethod/ShowInputMethodPickerUseCase.kt

@@ -1,16 +1,33 @@
 package io.github.sds100.keymapper.base.system.inputmethod
 
+import io.github.sds100.keymapper.data.Keys
+import io.github.sds100.keymapper.data.PreferenceDefaults
+import io.github.sds100.keymapper.data.repositories.PreferenceRepository
 import io.github.sds100.keymapper.system.inputmethod.InputMethodAdapter
 import javax.inject.Inject
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
 
 class ShowInputMethodPickerUseCaseImpl @Inject constructor(
     private val inputMethodAdapter: InputMethodAdapter,
+    private val preferenceRepository: PreferenceRepository,
 ) : ShowInputMethodPickerUseCase {
+    override val isAutoSwitchImeEnabled: Flow<Boolean> =
+        preferenceRepository.get(Keys.changeImeOnInputFocus)
+            .map { it ?: PreferenceDefaults.CHANGE_IME_ON_INPUT_FOCUS }
+
+    override fun disableAutoSwitch() {
+        preferenceRepository.set(Keys.changeImeOnInputFocus, false)
+    }
+
     override fun show(fromForeground: Boolean) {
         inputMethodAdapter.showImePicker(fromForeground = fromForeground)
     }
 }
 
 interface ShowInputMethodPickerUseCase {
+    val isAutoSwitchImeEnabled: Flow<Boolean>
+
+    fun disableAutoSwitch()
     fun show(fromForeground: Boolean)
 }