From e4bc4ba1bc9764a95102b452e6c83db6393de41b Mon Sep 17 00:00:00 2001
From: "bjorn.winckler" <bjorn.winckler@96c4425d-ca35-0410-94e5-3396d5c13a8f>
Date: Sat, 13 Oct 2007 13:17:02 +0000
Subject: [PATCH] Red close button indicates if any buffer is modified

git-svn-id: http://macvim.googlecode.com/svn/trunk@312 96c4425d-ca35-0410-94e5-3396d5c13a8f
---
 MMBackend.h       |  2 ++
 MMBackend.m       | 10 ++++++++++
 MMVimController.m |  4 ++++
 MacVim.h          |  2 ++
 MacVim.m          |  2 ++
 gui_macvim.m      | 10 ++++++++++
 6 files changed, 30 insertions(+)

diff --git a/MMBackend.h b/MMBackend.h
index af48b5b6..a432225c 100644
--- a/MMBackend.h
+++ b/MMBackend.h
@@ -119,6 +119,8 @@
 - (void)enterFullscreen;
 - (void)leaveFullscreen;
 
+- (void)updateModifiedFlag;
+
 - (void)registerServerWithName:(NSString *)name;
 - (BOOL)sendToServer:(NSString *)name string:(NSString *)string
                reply:(char_u **)reply port:(int *)port expression:(BOOL)expr
diff --git a/MMBackend.m b/MMBackend.m
index 70e34c93..462ad882 100644
--- a/MMBackend.m
+++ b/MMBackend.m
@@ -1018,6 +1018,16 @@ enum {
     [self queueMessage:LeaveFullscreenMsgID data:nil];
 }
 
+- (void)updateModifiedFlag
+{
+    // Notify MacVim if _any_ buffer has changed from unmodified to modified or
+    // vice versa.
+    int msgid = [self checkForModifiedBuffers]
+            ? BuffersModifiedMsgID : BuffersNotModifiedMsgID;
+
+    [self queueMessage:msgid data:nil];
+}
+
 - (oneway void)processInput:(int)msgid data:(in bycopy NSData *)data
 {
     // NOTE: This method might get called whenever the run loop is tended to.
diff --git a/MMVimController.m b/MMVimController.m
index 19fa0d84..91ffdaf2 100644
--- a/MMVimController.m
+++ b/MMVimController.m
@@ -790,6 +790,10 @@ static NSMenuItem *findMenuItemWithTagInMenu(NSMenu *root, int tag)
         [windowController enterFullscreen];
     } else if (LeaveFullscreenMsgID == msgid) {
         [windowController leaveFullscreen];
+    } else if (BuffersNotModifiedMsgID == msgid) {
+        [[windowController window] setDocumentEdited:NO];
+    } else if (BuffersModifiedMsgID == msgid) {
+        [[windowController window] setDocumentEdited:YES];
     } else {
         NSLog(@"WARNING: Unknown message received (msgid=%d)", msgid);
     }
diff --git a/MacVim.h b/MacVim.h
index 81420eb0..ebbd9c0e 100644
--- a/MacVim.h
+++ b/MacVim.h
@@ -154,6 +154,8 @@ enum {
     SetServerNameMsgID,
     EnterFullscreenMsgID,
     LeaveFullscreenMsgID,
+    BuffersNotModifiedMsgID,
+    BuffersModifiedMsgID,
 };
 
 
diff --git a/MacVim.m b/MacVim.m
index 4342c9fa..814faec1 100644
--- a/MacVim.m
+++ b/MacVim.m
@@ -61,6 +61,8 @@ char *MessageStrings[] =
     "SetServerNameMsgID",
     "EnterFullscreenMsgID",
     "LeaveFullscreenMsgID",
+    "BuffersNotModifiedMsgID",
+    "BuffersModifiedMsgID",
 };
 
 
diff --git a/gui_macvim.m b/gui_macvim.m
index bbc211cf..c5171f09 100644
--- a/gui_macvim.m
+++ b/gui_macvim.m
@@ -1367,12 +1367,14 @@ gui_macvim_is_valid_action(NSString *action)
     return [actionDict objectForKey:action] != nil;
 }
 
+
     void
 gui_mch_enter_fullscreen()
 {
     [[MMBackend sharedInstance] enterFullscreen];
 }
 
+
     void
 gui_mch_leave_fullscreen()
 {
@@ -1380,6 +1382,14 @@ gui_mch_leave_fullscreen()
 }
 
 
+    void
+gui_macvim_update_modified_flag()
+{
+    [[MMBackend sharedInstance] updateModifiedFlag];
+}
+
+
+
 
 // -- Client/Server ---------------------------------------------------------
 
-- 
2.11.4.GIT