cef/include/cef_application_mac.h

// Copyright (c) 2011 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef CEF_INCLUDE_CEF_APPLICATION_MAC_H_
#define CEF_INCLUDE_CEF_APPLICATION_MAC_H_
#pragma once

#ifdef __cplusplus
#include "include/cef_base.h"
#endif  // __cplusplus

#if defined(OS_MAC) && defined(__OBJC__)

#ifdef USING_CHROMIUM_INCLUDES

// Use the existing CrAppControlProtocol definition.
#import "base/mac/scoped_sending_event.h"

// Use the existing CrAppProtocol definition.
#import "base/message_loop/message_pump_mac.h"

// Use the existing empty protocol definitions.
#import "base/mac/cocoa_protocols.h"

// Use the existing empty protocol definitions.
#import "base/mac/sdk_forward_declarations.h"

#else  // USING_CHROMIUM_INCLUDES

#import <AppKit/AppKit.h>
#import <Cocoa/Cocoa.h>

// Copy of definition from base/message_loop/message_pump_mac.h.
@protocol CrAppProtocol
// Must return true if -[NSApplication sendEvent:] is currently on the stack.
- (BOOL)isHandlingSendEvent;
@end

// Copy of definition from base/mac/scoped_sending_event.h.
@protocol CrAppControlProtocol <CrAppProtocol>
- (void)setHandlingSendEvent:(BOOL)handlingSendEvent;
@end

#endif  // USING_CHROMIUM_INCLUDES

// All CEF client applications must subclass NSApplication and implement this
// protocol.
@protocol CefAppProtocol <CrAppControlProtocol>
@end

#ifdef __cplusplus

// Controls the state of |isHandlingSendEvent| in the event loop so that it is
// reset properly.
class CefScopedSendingEvent {
 public:
  CefScopedSendingEvent()
      : app_(static_cast<NSApplication<CefAppProtocol>*>(
            [NSApplication sharedApplication])),
        handling_([app_ isHandlingSendEvent]) {
    [app_ setHandlingSendEvent:YES];
  }
  ~CefScopedSendingEvent() { [app_ setHandlingSendEvent:handling_]; }

 private:
  NSApplication<CefAppProtocol>* app_;
  BOOL handling_;
};

#endif  // __cplusplus

#endif  // defined(OS_MAC) && defined(__OBJC__)

#endif  // CEF_INCLUDE_CEF_APPLICATION_MAC_H_