Repo // Auto-expand candidate UI under certain conditions.

Packages/vChewing_CandidateWindow/Sources/CandidateWindow/TDKCandidates/CtlCandidateTDK.swift

@@ -96,7 +96,8 @@ public class CtlCandidateTDK: CtlCandidate, NSWindowDelegate {
     CandidateCellData.unifiedSize = candidateFont.pointSize
     guard let delegate = delegate else { return }
     Self.thePool = .init(
-      candidates: delegate.candidatePairs(conv: true), lines: maxLinesPerPage, isExpanded: false,
+      candidates: delegate.candidatePairs(conv: true), lines: maxLinesPerPage,
+      isExpanded: delegate.shouldAutoExpandCandidates,
       selectionKeys: delegate.selectionKeys, layout: currentLayout.layoutTDK, locale: locale
     )
     Self.thePool.tooltip = tooltip

Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Delegates.swift

@@ -79,6 +79,12 @@ extension SessionCtl: InputHandlerDelegate {
 
 extension SessionCtl: CtlCandidateDelegate {
   public var isCandidateState: Bool { state.isCandidateContainer }
+
+  public var shouldAutoExpandCandidates: Bool {
+    guard state.type == .ofSymbolTable else { return state.type == .ofAssociates }
+    return state.node.previous != nil
+  }
+
   public var isCandidateContextMenuEnabled: Bool {
     state.type == .ofCandidates && !clientBundleIdentifier.contains("com.apple.Spotlight")
       && !clientBundleIdentifier.contains("com.raycast.macos")

Packages/vChewing_Shared/Sources/Shared/Protocols/CtlCandidateProtocol.swift

@@ -19,6 +19,7 @@ public protocol CtlCandidateDelegate {
   var selectionKeys: String { get }
   var isVerticalTyping: Bool { get }
   var isCandidateState: Bool { get }
+  var shouldAutoExpandCandidates: Bool { get }
   var isCandidateContextMenuEnabled: Bool { get }
   var showReverseLookupResult: Bool { get }
 }