From baaf92008982a1429d01f3c39f4195e5a8e0625c Mon Sep 17 00:00:00 2001
From: Tae Won Ha <h@taewon.de>
Date: Wed, 9 Dec 2020 22:14:51 +0100
Subject: [PATCH] Forward warning to main window

---
 NvimView/Sources/NvimView/NvimView+Types.swift |  7 +++++++
 NvimView/Sources/NvimView/NvimView.swift       |  8 ++++++--
 VimR/VimR/MainWindow.swift                     | 18 ++++++++++++------
 3 files changed, 25 insertions(+), 8 deletions(-)

diff --git a/NvimView/Sources/NvimView/NvimView+Types.swift b/NvimView/Sources/NvimView/NvimView+Types.swift
index c82a41d7..228b62e8 100644
--- a/NvimView/Sources/NvimView/NvimView+Types.swift
+++ b/NvimView/Sources/NvimView/NvimView+Types.swift
@@ -46,6 +46,11 @@ extension NvimView {
     }
   }
 
+  public enum Warning {
+    case cannotCloseLastTab
+    case noWriteSinceLastChange
+  }
+
   public enum Event {
 
     case neoVimStopped
@@ -68,6 +73,8 @@ extension NvimView {
     case rpcEvent([MessagePack.MessagePackValue])
     case rpcEventSubscribed
 
+    case warning(Warning)
+
     case initVimError
 
     // FIXME: maybe do onError()?
diff --git a/NvimView/Sources/NvimView/NvimView.swift b/NvimView/Sources/NvimView/NvimView.swift
index 2b0f3e4a..47fb162b 100644
--- a/NvimView/Sources/NvimView/NvimView.swift
+++ b/NvimView/Sources/NvimView/NvimView.swift
@@ -183,8 +183,12 @@ public class NvimView: NSView,
                 array[0].uint64Value == RxNeovimApi.Error.exceptionRawValue,
                 let errorMsg = array[1].stringValue else { return }
 
-          if errorMsg.contains("Vim(tabclose):E784") { Swift.print("cannot close last tab page!") }
-          if errorMsg.starts(with: "Vim(tabclose):E37") { Swift.print("no write!") }
+          if errorMsg.contains("Vim(tabclose):E784") {
+            self?.eventsSubject.onNext(.warning(.cannotCloseLastTab))
+          }
+          if errorMsg.starts(with: "Vim(tabclose):E37") {
+            self?.eventsSubject.onNext(.warning(.noWriteSinceLastChange))
+          }
 
         default:
           self?.log.debug("???: This should not happen")
diff --git a/VimR/VimR/MainWindow.swift b/VimR/VimR/MainWindow.swift
index 9fc29acd..a59907f4 100644
--- a/VimR/VimR/MainWindow.swift
+++ b/VimR/VimR/MainWindow.swift
@@ -310,6 +310,8 @@ class MainWindow: NSObject,
 
         case let .rpcEvent(params): self?.rpcEventAction(params: params)
 
+        case let .warning(warning): self?.show(warning: warning)
+
         case .rpcEventSubscribed: break
         }
       }, onError: { error in
@@ -476,15 +478,15 @@ class MainWindow: NSObject,
   private func set(tabsThemeWith _: Theme) {
     var tabsTheme = Tabs.Theme.default
 
-    tabsTheme.foregroundColor = theme.foreground
-    tabsTheme.backgroundColor = theme.background
+    tabsTheme.foregroundColor = self.theme.foreground
+    tabsTheme.backgroundColor = self.theme.background
 
-    tabsTheme.separatorColor = theme.background.brightening(by: 0.75)
+    tabsTheme.separatorColor = self.theme.background.brightening(by: 0.75)
 
-    tabsTheme.selectedForegroundColor = theme.highlightForeground
-    tabsTheme.selectedBackgroundColor = theme.highlightBackground
+    tabsTheme.selectedForegroundColor = self.theme.highlightForeground
+    tabsTheme.selectedBackgroundColor = self.theme.highlightBackground
 
-    tabsTheme.tabSelectedIndicatorColor = theme.highlightForeground
+    tabsTheme.tabSelectedIndicatorColor = self.theme.highlightForeground
 
     self.neoVimView.tabBar?.update(theme: tabsTheme)
   }
@@ -581,4 +583,8 @@ class MainWindow: NSObject,
 
     NSUserNotificationCenter.default.deliver(notification)
   }
+
+  private func show(warning: NvimView.Warning) {
+    Swift.print(warning)
+  }
 }