1 files changed, 33 insertions, 0 deletions
diff --git a/chrome/browser/cocoa/multi_key_equivalent_button.mm b/chrome/browser/cocoa/multi_key_equivalent_button.mm
new file mode 100644
index 0000000..fc10160
--- /dev/null
+++ b/chrome/browser/cocoa/multi_key_equivalent_button.mm
@@ -0,0 +1,33 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/cocoa/multi_key_equivalent_button.h"
+
+@implementation MultiKeyEquivalentButton
+
+- (void)addKeyEquivalent:(KeyEquivalentAndModifierMask)key {
+  extraKeys_.push_back(key);
+}
+
+- (BOOL)performKeyEquivalent:(NSEvent*)event {
+  NSWindow* modalWindow = [NSApp modalWindow];
+  NSWindow* window = [self window];
+
+  if ([self isEnabled] &&
+      (!modalWindow || modalWindow == window || [window worksWhenModal])) {
+    for (size_t index = 0; index < extraKeys_.size(); ++index) {
+      KeyEquivalentAndModifierMask key = extraKeys_[index];
+      if (key.charCode &&
+          [key.charCode isEqualToString:[event charactersIgnoringModifiers]] &&
+          ([event modifierFlags] & key.mask) == key.mask) {
+        [self performClick:self];
+        return YES;
+      }
+    }
+  }
+
+  return [super performKeyEquivalent:event];
+}
+
+@end