SessionCtl // Add .clientAccentColor().

Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_Delegates.swift

@@ -81,6 +81,28 @@ extension SessionCtl: InputHandlerDelegate {
 extension SessionCtl: CtlCandidateDelegate {
   public var isCandidateState: Bool { state.isCandidateContainer }
 
+  public var clientAccentColor: NSColor? {
+    var nullResponse = !PrefMgr.shared.respectClientAccentColor
+    nullResponse = nullResponse || PrefMgr.shared.shiftJISShinjitaiOutputEnabled
+    nullResponse = nullResponse || PrefMgr.shared.chineseConversionEnabled
+    guard !nullResponse else { return nil }
+    let fallbackValue = NSColor.accentColor
+    if #unavailable(macOS 10.14) {
+      return fallbackValue
+    }
+    // 此處因為沒有對 client() 的強引用，所以不會耽誤很多時間。
+    let urls = NSRunningApplication.runningApplications(
+      withBundleIdentifier: client()?.bundleIdentifier() ?? ""
+    ).compactMap(\.bundleURL)
+    let bundles = urls.compactMap { Bundle(url: $0) }
+    for bundle in bundles {
+      let bundleAccentColor = bundle.getAccentColor()
+      guard bundleAccentColor != .accentColor else { continue }
+      return bundleAccentColor
+    }
+    return fallbackValue
+  }
+
   public var shouldAutoExpandCandidates: Bool {
     guard !PrefMgr.shared.alwaysExpandCandidateWindow else { return true }
     guard state.type == .ofSymbolTable else { return state.type == .ofAssociates }

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

@@ -22,6 +22,7 @@ public protocol CtlCandidateDelegate {
   var shouldAutoExpandCandidates: Bool { get }
   var isCandidateContextMenuEnabled: Bool { get }
   var showReverseLookupResult: Bool { get }
+  var clientAccentColor: NSColor? { get }
 }
 
 public protocol CtlCandidateProtocol {