From 3b89976e377248fce12b788b6ec52dfe14e138d4 Mon Sep 17 00:00:00 2001
From: Matthew Flatt <mflatt@racket-lang.org>
Date: Sun, 30 Nov 2008 18:26:25 +0000
Subject: [PATCH] new Mac file-dialog support only for 10.5 and up

svn: r12652
---
 src/wxmac/src/mac/wx_file_dialog.m | 66 +++++++++++++++++-------------
 1 file changed, 37 insertions(+), 29 deletions(-)

diff --git a/src/wxmac/src/mac/wx_file_dialog.m b/src/wxmac/src/mac/wx_file_dialog.m
index f398b62fc4..9f7be5da6d 100644
--- a/src/wxmac/src/mac/wx_file_dialog.m
+++ b/src/wxmac/src/mac/wx_file_dialog.m
@@ -6,38 +6,46 @@
 
 void wx_set_nav_file_types(NavDialogRef dlg, int cnt, char **exts, char *def_ext)
 {
-  if (cnt) {
-    id pool = [[NSAutoreleasePool alloc] init];
-    id *objs;
-    int i, j, allow_others = 0;
-    NSArray *a;
-    NSSavePanel *sp = (NSSavePanel *)dlg;
+  SInt32 versionMajor, versionMinor;
 
-    for (i = 0; i < cnt; i++) {
-      if (!strcmp(exts[i], "*"))
-        allow_others = 1;
-    }
-    
-    objs = (id *)malloc(sizeof(id) * (1 + (cnt - allow_others)));
-    j = 0;
-    objs[j++] = [[NSString alloc] initWithUTF8String: def_ext];
-    for (i = 0; i < cnt; i++) {
-      if (strcmp(exts[i], "*"))
-        objs[j++] = [[NSString alloc] initWithUTF8String: exts[i]];
-    }
-    
-    a = [NSArray arrayWithObjects:objs count:j];
+  Gestalt(gestaltSystemVersionMajor, &versionMajor);
+  Gestalt(gestaltSystemVersionMinor, &versionMinor);
+  
+  if ((versionMajor >= 10)
+      && (versionMinor >= 5)) {
+    if (cnt) {
+      id pool = [[NSAutoreleasePool alloc] init];
+      id *objs;
+      int i, j, allow_others = 0;
+      NSArray *a;
+      NSSavePanel *sp = (NSSavePanel *)dlg;
 
-    [sp setAllowedFileTypes:a];
-    [sp setCanSelectHiddenExtension:TRUE];
-    if (!allow_others)
-      [sp setAllowsOtherFileTypes:FALSE];
+      for (i = 0; i < cnt; i++) {
+        if (!strcmp(exts[i], "*"))
+          allow_others = 1;
+      }
     
-    for (i = 0; i < j; i++) {
-      [objs[i] release];
-    }
-    free(objs);
+      objs = (id *)malloc(sizeof(id) * (1 + (cnt - allow_others)));
+      j = 0;
+      objs[j++] = [[NSString alloc] initWithUTF8String: def_ext];
+      for (i = 0; i < cnt; i++) {
+        if (strcmp(exts[i], "*"))
+          objs[j++] = [[NSString alloc] initWithUTF8String: exts[i]];
+      }
+    
+      a = [NSArray arrayWithObjects:objs count:j];
 
-    [pool release];
+      [sp setAllowedFileTypes:a];
+      [sp setCanSelectHiddenExtension:TRUE];
+      if (!allow_others)
+        [sp setAllowsOtherFileTypes:FALSE];
+    
+      for (i = 0; i < j; i++) {
+        [objs[i] release];
+      }
+      free(objs);
+
+      [pool release];
+    }
   }
 }