Fix open/save panel related compilation warnings

src/MacVim/MMAppController.m

@@ -1070,10 +1070,40 @@ - (IBAction)fileOpen:(id)sender
     NSOpenPanel *panel = [NSOpenPanel openPanel];
     [panel setAllowsMultipleSelection:YES];
     [panel setAccessoryView:showHiddenFilesView()];
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
+    // NOTE: -[NSOpenPanel runModalForDirectory:file:types:] is deprecated on
+    // 10.7 but -[NSOpenPanel setDirectoryURL:] requires 10.6 so jump through
+    // the following hoops on 10.6+.
+    dir = [dir stringByExpandingTildeInPath];
+    if (dir) {
+        NSURL *dirURL = [NSURL fileURLWithPath:dir isDirectory:YES];
+        if (dirURL)
+            [panel setDirectoryURL:dirURL];
+    }
+
+    NSInteger result = [panel runModal];
+#else
+    NSInteger result = [panel runModalForDirectory:dir file:nil types:nil];
+#endif
+    if (NSOKButton == result) {
+        // NOTE: -[NSOpenPanel filenames] is deprecated on 10.7 so use
+        // -[NSOpenPanel URLs] instead.  The downside is that we have to check
+        // that each URL is really a path first.
+        NSMutableArray *filenames = [NSMutableArray array];
+        NSArray *urls = [panel URLs];
+        NSUInteger i, count = [urls count];
+        for (i = 0; i < count; ++i) {
+            NSURL *url = [urls objectAtIndex:i];
+            if ([url isFileURL]) {
+                NSString *path = [url path];
+                if (path)
+                    [filenames addObject:path];
+            }
+        }
 
-    int result = [panel runModalForDirectory:dir file:nil types:nil];
-    if (NSOKButton == result)
-        [self application:NSApp openFiles:[panel filenames]];
+        if ([filenames count] > 0)
+            [self application:NSApp openFiles:filenames];
+    }
 }
 
 - (IBAction)selectNextWindow:(id)sender

src/MacVim/MMVimController.m

@@ -894,7 +894,12 @@ - (void)handleMessage:(int)msgid data:(NSData *)data
 - (void)savePanelDidEnd:(NSSavePanel *)panel code:(int)code
                 context:(void *)context
 {
-    NSString *path = (code == NSOKButton) ? [panel filename] : nil;
+    NSString *path = nil;
+    if (code == NSOKButton) {
+        NSURL *url = [panel URL];
+        if ([url isFileURL])
+            path = [url path];
+    }
     ASLogDebug(@"Open/save panel path=%@", path);
 
     // NOTE!  This causes the sheet animation to run its course BEFORE the rest
@@ -1386,6 +1391,12 @@ - (void)handleBrowseForFile:(NSDictionary *)attr
             dir = [vimState objectForKey:@"pwd"];
     }
 
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
+    // 10.6+ APIs uses URLs instead of paths
+    dir = [dir stringByExpandingTildeInPath];
+    NSURL *dirURL = dir ? [NSURL fileURLWithPath:dir isDirectory:YES] : nil;
+#endif
+
     if (saving) {
         NSSavePanel *panel = [NSSavePanel savePanel];
 
@@ -1395,22 +1406,47 @@ - (void)handleBrowseForFile:(NSDictionary *)attr
         [panel setDelegate:self];
         if ([panel isExpanded])
             [panel setAccessoryView:showHiddenFilesView()];
-
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
+        // NOTE: -[NSSavePanel beginSheetForDirectory::::::] is deprecated on
+        // 10.6 but -[NSSavePanel setDirectoryURL:] requires 10.6 so jump
+        // through the following hoops on 10.6+.
+        if (dirURL)
+            [panel setDirectoryURL:dirURL];
+
+        [panel beginSheetModalForWindow:[windowController window]
+                      completionHandler:^(NSInteger result) {
+            [self savePanelDidEnd:panel code:result context:nil];
+        }];
+#else
         [panel beginSheetForDirectory:dir file:nil
                 modalForWindow:[windowController window]
                  modalDelegate:self
                 didEndSelector:@selector(savePanelDidEnd:code:context:)
                    contextInfo:NULL];
+#endif
     } else {
         NSOpenPanel *panel = [NSOpenPanel openPanel];
         [panel setAllowsMultipleSelection:NO];
         [panel setAccessoryView:showHiddenFilesView()];
 
+#if (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
+        // NOTE: -[NSOpenPanel beginSheetForDirectory:::::::] is deprecated on
+        // 10.6 but -[NSOpenPanel setDirectoryURL:] requires 10.6 so jump
+        // through the following hoops on 10.6+.
+        if (dirURL)
+            [panel setDirectoryURL:dirURL];
+
+        [panel beginSheetModalForWindow:[windowController window]
+                      completionHandler:^(NSInteger result) {
+            [self savePanelDidEnd:panel code:result context:nil];
+        }];
+#else
         [panel beginSheetForDirectory:dir file:nil types:nil
                 modalForWindow:[windowController window]
                  modalDelegate:self
                 didEndSelector:@selector(savePanelDidEnd:code:context:)
                    contextInfo:NULL];
+#endif
     }
 }