Move nsalert_synchronous_sheet to browser/ui.

browser/ui/message_box_mac.mm

@@ -8,7 +8,7 @@
 
 #include "base/strings/sys_string_conversions.h"
 #include "browser/native_window.h"
-#include "browser/nsalert_synchronous_sheet.h"
+#include "browser/ui/nsalert_synchronous_sheet_mac.h"
 
 namespace atom {
 

browser/ui/nsalert_synchronous_sheet_mac.h

@@ -0,0 +1,10 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import <Cocoa/Cocoa.h>
+
+@interface NSAlert (SynchronousSheet)
+-(NSInteger) runModalSheetForWindow:(NSWindow*)aWindow;
+-(NSInteger) runModalSheet;
+@end

browser/ui/nsalert_synchronous_sheet_mac.mm

@@ -0,0 +1,51 @@
+// Copyright (c) 2013 GitHub, Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "browser/ui/nsalert_synchronous_sheet_mac.h"
+
+// Private methods -- use prefixes to avoid collisions with Apple's methods
+@interface NSAlert (SynchronousSheetPrivate)
+-(IBAction) BE_stopSynchronousSheet:(id)sender;   // hide sheet & stop modal
+-(void) BE_beginSheetModalForWindow:(NSWindow *)aWindow;
+@end
+
+@implementation NSAlert (SynchronousSheet)
+
+-(NSInteger) runModalSheetForWindow:(NSWindow *)aWindow {
+  // Set ourselves as the target for button clicks
+  for (NSButton *button in [self buttons]) {
+    [button setTarget:self];
+    [button setAction:@selector(BE_stopSynchronousSheet:)];
+  }
+
+  // Bring up the sheet and wait until stopSynchronousSheet is triggered by a button click
+  [self performSelectorOnMainThread:@selector(BE_beginSheetModalForWindow:) withObject:aWindow waitUntilDone:YES];
+  NSInteger modalCode = [NSApp runModalForWindow:[self window]];
+
+  // This is called only after stopSynchronousSheet is called (that is,
+  // one of the buttons is clicked)
+  [NSApp performSelectorOnMainThread:@selector(endSheet:) withObject:[self window] waitUntilDone:YES];
+
+  // Remove the sheet from the screen
+  [[self window] performSelectorOnMainThread:@selector(orderOut:) withObject:self waitUntilDone:YES];
+
+  return modalCode;
+}
+
+-(NSInteger) runModalSheet {
+  return [self runModalSheetForWindow:[NSApp mainWindow]];
+}
+
+
+#pragma mark Private methods
+
+-(IBAction) BE_stopSynchronousSheet:(id)sender {
+  [NSApp stopModalWithCode:[sender  tag]];
+}
+
+-(void) BE_beginSheetModalForWindow:(NSWindow *)aWindow {
+  [self beginSheetModalForWindow:aWindow modalDelegate:nil didEndSelector:nil contextInfo:nil];
+}
+
+@end