SessionCtl // Add isCandidateState().

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

@@ -15,6 +15,7 @@ public protocol CtlCandidateDelegate {
   @discardableResult func reverseLookup(for value: String) -> [String]
   var selectionKeys: String { get }
   var isVerticalTyping: Bool { get }
+  var isCandidateState: Bool { get }
   var showReverseLookupResult: Bool { get }
 }
 

Source/Modules/SessionCtl_Delegates.swift

@@ -56,6 +56,8 @@ extension SessionCtl: InputHandlerDelegate {
 // MARK: - Candidate Controller Delegate
 
 extension SessionCtl: CtlCandidateDelegate {
+  public var isCandidateState: Bool { state.isCandidateContainer }
+
   public var showReverseLookupResult: Bool {
     !isVerticalTyping && PrefMgr.shared.showReverseLookupInCandidateUI
   }