Add "show hidden files" checkbox to open file dialog

src/MacVim/MMAppController.h

@@ -41,4 +41,6 @@
 - (IBAction)showVimHelp:(id)sender;
 - (IBAction)zoomAll:(id)sender;
 
+- (NSView *)accessoryView;
+
 @end

src/MacVim/MMAppController.m

@@ -701,6 +701,8 @@ static int executeInLoginShell(NSString *path, NSArray *args);
 
     NSOpenPanel *panel = [NSOpenPanel openPanel];
     [panel setAllowsMultipleSelection:YES];
+    [panel setAccessoryView:[self accessoryView]];
+
     int result = [panel runModalForDirectory:dir file:nil types:nil];
     if (NSOKButton == result)
         [self application:NSApp openFiles:[panel filenames]];
@@ -772,6 +774,34 @@ static int executeInLoginShell(NSString *path, NSArray *args);
     [NSApp makeWindowsPerform:@selector(performZoom:) inOrder:YES];
 }
 
+- (NSView *)accessoryView
+{
+    // Return a new button object for each NSOpenPanel -- several of them
+    // could be displayed at once.
+    // If the accessory view should get more complex, it should probably be
+    // loaded from a nib file.
+    NSButton *button = [[[NSButton alloc]
+        initWithFrame:NSMakeRect(0, 0, 140, 18)] autorelease];
+    [button setTitle:
+        NSLocalizedString(@"Show Hidden Files", @"Open File Dialog")];
+    [button setButtonType:NSSwitchButton];
+
+    [button setTarget:nil];
+    [button setAction:@selector(hiddenFilesButtonToggled:)];
+
+    // use the regular control size (checkbox is a bit smaller without this)
+    NSControlSize buttonSize = NSRegularControlSize;
+    float fontSize = [NSFont systemFontSizeForControlSize:buttonSize];
+    NSCell *theCell = [button cell];
+    NSFont *theFont = [NSFont fontWithName:[[theCell font] fontName]
+                                      size:fontSize];
+    [theCell setFont:theFont];
+    [theCell setControlSize:buttonSize];
+    [button sizeToFit];
+
+    return button;
+}
+
 - (byref id <MMFrontendProtocol>)
     connectBackend:(byref in id <MMBackendProtocol>)backend
                pid:(int)pid

src/MacVim/MMVimController.m

@@ -414,6 +414,9 @@ static BOOL isUnsafeMessage(int msgid);
     } else {
         NSOpenPanel *panel = [NSOpenPanel openPanel];
         [panel setAllowsMultipleSelection:NO];
+        [panel setAccessoryView:
+            [[MMAppController sharedInstance] accessoryView]];
+
         [panel beginSheetForDirectory:dir file:nil types:nil
                 modalForWindow:[windowController window]
                  modalDelegate:self

src/MacVim/MacVim.h

@@ -301,6 +301,14 @@ NSString *buildSearchTextCommand(NSString *searchText);
 
 
 
+@interface NSOpenPanel (MMExtras)
+- (void)hiddenFilesButtonToggled:(id)sender;
+- (void)setShowsHiddenFiles:(BOOL)show;
+@end
+
+
+
+
 // ODB Editor Suite Constants (taken from ODBEditorSuite.h)
 #define	keyFileSender		'FSnd'
 #define	keyFileSenderToken	'FTok'

src/MacVim/MacVim.m

@@ -333,3 +333,37 @@ buildSearchTextCommand(NSString *searchText)
 }
 
 @end
+
+
+
+
+@implementation NSOpenPanel (MMExtras)
+
+- (void)hiddenFilesButtonToggled:(id)sender
+{
+    [self setShowsHiddenFiles:[sender intValue]];
+}
+
+- (void)setShowsHiddenFiles:(BOOL)show
+{
+    // This is undocumented stuff, so be careful. This does the same as
+    //     [[self _navView] setShowsHiddenFiles:show];
+    // but does not produce warnings.
+
+    if (![self respondsToSelector:@selector(_navView)])
+        return;
+
+    id navView = [self performSelector:@selector(_navView)];
+    if (![navView respondsToSelector:@selector(setShowsHiddenFiles:)])
+        return;
+
+    // performSelector:withObject: does not support a BOOL
+    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:
+        [navView methodSignatureForSelector:@selector(setShowsHiddenFiles:)]];
+    [invocation setTarget:navView];
+    [invocation setSelector:@selector(setShowsHiddenFiles:)];
+    [invocation setArgument:&show atIndex:2];
+    [invocation invoke];
+}
+
+@end