GH-229 Send dirty status when changed to the UI

NeoVimServer/NeoVimMsgIds.h

@@ -34,6 +34,7 @@ typedef NS_ENUM(NSUInteger, NeoVimServerMsgId) {
   NeoVimServerMsgIdSuspend,
   NeoVimServerMsgIdSetTitle,
   NeoVimServerMsgIdSetIcon,
+  NeoVimServerMsgIdDirtyStatusChanged,
   NeoVimServerMsgIdStop,
 
 #ifdef DEBUG

NeoVimServer/server_ui.m

@@ -22,6 +22,8 @@
 #import <nvim/event/signal.h>
 #import <nvim/main.h>
 #import <nvim/ex_getln.h>
+#import <nvim/fileio.h>
+#import <nvim/undo.h>
 
 
 #define pun_type(t, x) (*((t *)(&x)))
@@ -65,6 +67,8 @@ static int _marked_delta = 0;
 static int _put_row = -1;
 static int _put_column = -1;
 
+static bool _dirty = false;
+
 static NSString *_backspace = nil;
 
 static dispatch_queue_t _queue;
@@ -469,6 +473,22 @@ static void neovim_input(void **argv) {
   }
 }
 
+static void neovim_send_dirty_status(void **argv) {
+  @autoreleasepool {
+    bool new_dirty_status = server_has_dirty_docs();
+//    log4Debug("dirty status: %d vs. %d", _dirty, new_dirty_status);
+    if (_dirty == new_dirty_status) {
+      return;
+    }
+
+    _dirty = new_dirty_status;
+//    log4Debug("sending dirty status: %d", _dirty);
+    NSData *data = [[NSData alloc] initWithBytes:&_dirty length:sizeof(bool)];
+    [_neovim_server sendMessageWithId:NeoVimServerMsgIdDirtyStatusChanged data:data];
+    [data release];
+  }
+}
+
 static void delete_marked_text() {
   NSUInteger length = [_marked_text lengthOfBytesUsingEncoding:NSUTF32StringEncoding] / 4;
 
@@ -523,6 +543,24 @@ void custom_ui_start(void) {
   ui_bridge_attach(ui, server_ui_main, server_ui_scheduler);
 }
 
+void custom_ui_autocmds_groups(
+    event_T event, char_u *fname, char_u *fname_io, int group, bool force, buf_T *buf, exarg_T *eap
+) {
+  log4Debug("got event %d for file %s in group %d.", event, fname, group);
+  switch (event) {
+    // Did we get them all?
+    case EVENT_TEXTCHANGED:
+    case EVENT_TEXTCHANGEDI:
+    case EVENT_BUFWRITEPOST:
+    case EVENT_BUFLEAVE:
+      loop_schedule(&main_loop, event_create(1, neovim_send_dirty_status, 0));
+      return;
+
+    default:
+      return;
+  }
+}
+
 void server_start_neovim() {
   _queue = dispatch_queue_create("com.qvacua.vimr.neovim-server.queue", DISPATCH_QUEUE_SERIAL);
 
@@ -652,7 +690,11 @@ void server_insert_marked_text(NSString *markedText) {
 
 bool server_has_dirty_docs() {
   FOR_ALL_BUFFERS(buffer) {
-    if (buffer->b_changed) {
+    if (buffer->b_p_bl == 0) {
+      continue;
+    }
+
+    if (bufIsChanged(buffer)) {
       return true;
     }
   }
@@ -673,6 +715,10 @@ NSString *server_escaped_filename(NSString *filename) {
 NSArray *server_buffers() {
   NSMutableArray <NeoVimBuffer *> *result = [[NSMutableArray new] autorelease];
   FOR_ALL_BUFFERS(buf) {
+    if (buf->b_p_bl == 0) {
+      continue;
+    }
+
     NSString *fileName = nil;
     if (buf->b_ffname != NULL) {
       fileName = [NSString stringWithCString:(const char *) buf->b_ffname encoding:NSUTF8StringEncoding];

SwiftNeoVim/NeoVimAgent.m

@@ -383,6 +383,12 @@ static CFDataRef local_server_callback(CFMessagePortRef local, SInt32 msgid, CFD
       return;
     }
 
+    case NeoVimServerMsgIdDirtyStatusChanged: {
+      bool *values = data_to_bool_array(data, 1);
+      [_bridge setDirtyStatus:values[0]];
+      return;
+    }
+
     case NeoVimServerMsgIdStop:
       [_bridge stop];
       return;

SwiftNeoVim/NeoVimUiBridgeProtocol.h

@@ -113,6 +113,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (void)suspend;
 - (void)setTitle:(NSString *)title;
 - (void)setIcon:(NSString *)icon;
+- (void)setDirtyStatus:(bool)dirty;
 
 /**
  * NeoVim has been stopped.

SwiftNeoVim/NeoVimView.swift

@@ -1162,6 +1162,12 @@ extension NeoVimView: NeoVimUiBridgeProtocol {
   public func setIcon(icon: String) {
   }
 
+  public func setDirtyStatus(dirty: Bool) {
+    DispatchUtils.gui {
+      self.delegate?.setDirtyStatus(dirty)
+    }
+  }
+  
   public func stop() {
     DispatchUtils.gui {
       self.delegate?.neoVimStopped()

SwiftNeoVim/NeoVimViewDelegate.swift

@@ -9,6 +9,7 @@ import Cocoa
 public protocol NeoVimViewDelegate: class {
   
   func setTitle(title: String)
+  func setDirtyStatus(dirty: Bool)
   func neoVimReady()
   func neoVimStopped()
 }

VimR/MainWindowComponent.swift

@@ -144,6 +144,10 @@ extension MainWindowComponent {
     self.neoVimView.open(urls: self.urlsToBeOpenedWhenReady)
   }
 
+  func setDirtyStatus(dirty: Bool) {
+    self.windowController.setDocumentEdited(dirty)
+  }
+  
   func neoVimStopped() {
     self.windowController.close()
   }

neovim

@@ -1 +1 @@
-Subproject commit f0b9c99c6395f770b1341f8b4270da1e3691143b
+Subproject commit 504960182eec29a5b5e00547f2d7836eab324e1b