feat: restore vertical layout in candidate window

refactor: update rime options on start input view

Author: WhiredPlanck

app/src/main/java/com/osfans/trime/ime/candidates/popup/PagedCandidatesUi.kt

@@ -26,6 +26,8 @@ class PagedCandidatesUi(
 ) : Ui {
     private var menu = RimeProto.Context.Menu()
 
+    private var isHorizontal = true
+
     sealed class UiHolder(
         open val ui: Ui,
     ) : RecyclerView.ViewHolder(ui.root) {
@@ -78,7 +80,7 @@ class PagedCandidatesUi(
                     is UiHolder.Pagination -> {
                         holder.ui.update(menu)
                         holder.ui.root.updateLayoutParams<FlexboxLayoutManager.LayoutParams> {
-                            alignSelf = AlignItems.CENTER
+                            alignSelf = if (isHorizontal) AlignItems.CENTER else AlignItems.STRETCH
                         }
                     }
                 }
@@ -92,8 +94,6 @@ class PagedCandidatesUi(
     private val candidatesLayoutManager =
         FlexboxLayoutManager(ctx).apply {
             flexWrap = FlexWrap.WRAP
-            flexDirection = FlexDirection.ROW
-            alignItems = AlignItems.BASELINE
         }
 
     override val root =
@@ -106,8 +106,21 @@ class PagedCandidatesUi(
             layoutManager = candidatesLayoutManager
         }
 
-    fun update(menu: RimeProto.Context.Menu) {
+    fun update(
+        menu: RimeProto.Context.Menu,
+        isHorizontal: Boolean,
+    ) {
         this.menu = menu
+        this.isHorizontal = isHorizontal
+        candidatesLayoutManager.apply {
+            if (isHorizontal) {
+                flexDirection = FlexDirection.ROW
+                alignItems = AlignItems.BASELINE
+            } else {
+                flexDirection = FlexDirection.COLUMN
+                alignItems = AlignItems.STRETCH
+            }
+        }
         candidatesAdapter.submitList(menu.candidates.toList())
     }
 }

app/src/main/java/com/osfans/trime/ime/composition/CandidatesView.kt

@@ -66,21 +66,24 @@ class CandidatesView(
     private fun updateUi() {
         if (evaluateVisibility()) {
             preeditUi.update(inputComposition)
+            // if CandidatesView can be shown, rime engine is ready most of the time,
+            // so it should be safety to get option immediately
+            val isHorizontalLayout = rime.run { getRuntimeOption("_horizontal") }
             when (candidatesMode) {
                 PopupCandidatesMode.CURRENT_PAGE -> {
                     candidatesUi.root.let {
                         if (it.visibility == View.GONE) {
                             it.visibility = View.VISIBLE
                         }
                     }
-                    candidatesUi.update(menu)
+                    candidatesUi.update(menu, isHorizontalLayout)
                 }
 
                 PopupCandidatesMode.PREEDIT_ONLY -> {
                     candidatesUi.root.let {
                         if (it.visibility != View.GONE) {
                             it.visibility = View.GONE
-                            candidatesUi.update(RimeProto.Context.Menu())
+                            candidatesUi.update(RimeProto.Context.Menu(), isHorizontalLayout)
                         }
                     }
                 }

app/src/main/java/com/osfans/trime/ime/core/TrimeInputMethodService.kt

@@ -202,7 +202,6 @@ open class TrimeInputMethodService : LifecycleInputMethodService() {
                         2 -> Locale(latinLocale[0], latinLocale[1])
                         else -> Locale.US
                     }
-                updateRimeOption(this)
                 Timber.d("Trime.onCreate  completed")
             }
         } catch (e: Exception) {
@@ -428,6 +427,7 @@ open class TrimeInputMethodService : LifecycleInputMethodService() {
     ) {
         Timber.d("onStartInputView: restarting=%s", restarting)
         postRimeJob {
+            updateRimeOption(this)
             InputFeedbackManager.loadSoundEffects(this@TrimeInputMethodService)
             InputFeedbackManager.resetPlayProgress()
             isComposable =