cef/include/wrapper/cef_closure_task.h

// Copyright (c) 2014 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
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// 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.
//
// ---------------------------------------------------------------------------
//
// The contents of this file are only available to applications that link
// against the libcef_dll_wrapper target.
//

#ifndef CEF_INCLUDE_WRAPPER_CEF_CLOSURE_TASK_H_
#define CEF_INCLUDE_WRAPPER_CEF_CLOSURE_TASK_H_
#pragma once

#include "include/base/cef_callback_forward.h"
#include "include/base/cef_macros.h"
#include "include/cef_task.h"

///
// Helpers for asynchronously executing a base::Closure (bound function or
// method) on a CEF thread. Creation of base::Closures can be facilitated using
// base::Bind. See include/base/cef_callback.h for complete usage instructions.
//
// TO use these helpers you should include this header and the header that
// defines base::Bind.
//
// #include "include/base/cef_bind.h"
// #include "include/wrapper/cef_closure_task.h"
//
// Example of executing a bound function:
//
// // Define a function.
// void MyFunc(int arg) { /* do something with |arg| on the UI thread */ }
//
// // Post a task that will execute MyFunc on the UI thread and pass an |arg|
// // value of 5.
// CefPostTask(TID_UI, base::Bind(&MyFunc, 5));
//
// Example of executing a bound method:
//
// // Define a class.
// class MyClass : public CefBase {
//  public:
//   MyClass() {}
//   void MyMethod(int arg) { /* do something with |arg| on the UI thread */ }
//  private:
//   IMPLEMENT_REFCOUNTING(MyClass);
// };
//
// // Create an instance of MyClass.
// CefRefPtr<MyClass> instance = new MyClass();
//
// // Post a task that will execute MyClass::MyMethod on the UI thread and pass
// // an |arg| value of 5. |instance| will be kept alive until after the task
// // completes.
// CefPostTask(TID_UI, base::Bind(&MyClass::MyMethod, instance, 5));
///

///
// Create a CefTask that wraps a base::Closure. Can be used in combination with
// CefTaskRunner.
///
CefRefPtr<CefTask> CefCreateClosureTask(const base::Closure& closure);

///
// Post a Closure for execution on the specified thread.
///
bool CefPostTask(CefThreadId threadId, const base::Closure& closure);

///
// Post a Closure for delayed execution on the specified thread.
///
bool CefPostDelayedTask(CefThreadId threadId, const base::Closure& closure,
                        int64 delay_ms);

#endif  // CEF_INCLUDE_WRAPPER_CEF_CLOSURE_TASK_H_