[rAC, OSX] Autofill text field hot keys.

chrome/browser/ui/cocoa/autofill/autofill_input_field.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_INPUT_FIELD_H_
 #define CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_INPUT_FIELD_H_
 
 #import <Cocoa/Cocoa.h>
 
 @protocol AutofillInputField;
 
 // Access to cell state for autofill input controls.
 @protocol AutofillInputCell<NSObject>
 
 @property(nonatomic, assign) BOOL invalid;
 @property(nonatomic, copy) NSString* fieldValue;
 @property(nonatomic, copy) NSString* defaultValue;
 
 @end
 
 // Delegate to handle editing events on the AutofillInputFields.
 @protocol AutofillInputDelegate<NSObject>
 
+// Indicates if an event should be forwarded on.
+enum KeyEventHandled {
+  kKeyEventNotHandled,
+  kKeyEventHandled
+};
+
+// The input field received a key event. This should return kKeyEventHandled if
+// it handled the event, or kEventNotHandled if it should be forwarded to the
+// input's super class.
+- (KeyEventHandled)keyEvent:(NSEvent*)event forInput:(id)sender;
+
 // Input field or its editor received a mouseDown: message.
 - (void)onMouseDown:(NSControl<AutofillInputField>*)sender;
 
 // An input field just became first responder.
 - (void)fieldBecameFirstResponder:(NSControl<AutofillInputField>*)field;
 
 // The user made changes to the value in the field. This is only invoked by
 // AutofillTextFields.
 - (void)didChange:(id)sender;
 
@@ skipping 20 matching lines @@
 // field, everything else is a message to be displayed to the user when the
 // field has firstResponder status.
 @property(nonatomic, copy) NSString* validityMessage;
 
 // A reflection of the state of the validityMessage described above.
 @property(nonatomic, readonly) BOOL invalid;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_AUTOFILL_AUTOFILL_INPUT_FIELD_H_