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// 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.

// ---------------------------------------------------------------------------

// The contents of this file must follow a specific format in order to

// support the CEF translator tool. See the translator.README.txt file in the

// tools directory for more information.

#ifndef CEF_INCLUDE_CEF_TASK_H_

#define CEF_INCLUDE_CEF_TASK_H_

#include "include/cef_base.h"

typedef cef_thread_id_t CefThreadId;

///

// Implement this interface for asynchronous task execution. If the task is

// posted successfully and if the associated message loop is still running then

// the Execute() method will be called on the target thread. If the task fails

// to post then the task object may be destroyed on the source thread instead of

// the target thread. For this reason be cautious when performing work in the

// task object destructor.

///

/*--cef(source=client)--*/

class CefTask : public virtual CefBase {

public:

///

// Method that will be executed on the target thread.

///

/*--cef()--*/

virtual void Execute() =0;

};

///

// Class that asynchronously executes tasks on the associated thread. It is safe

// to call the methods of this class on any thread.

// CEF maintains multiple internal threads that are used for handling different

// types of tasks in different processes. The cef_thread_id_t definitions in

// cef_types.h list the common CEF threads. Task runners are also available for

// other CEF threads as appropriate (for example, V8 WebWorker threads).

///

/*--cef(source=library)--*/

class CefTaskRunner : public virtual CefBase {

public:

///

// Returns the task runner for the current thread. Only CEF threads will have

// task runners. An empty reference will be returned if this method is called

// on an invalid thread.

///

/*--cef()--*/

static CefRefPtr<CefTaskRunner> GetForCurrentThread();

///

// Returns the task runner for the specified CEF thread.

///

/*--cef()--*/

static CefRefPtr<CefTaskRunner> GetForThread(CefThreadId threadId);

///

// Returns true if this object is pointing to the same task runner as |that|

// object.

///

/*--cef()--*/

virtual bool IsSame(CefRefPtr<CefTaskRunner> that) =0;

///

// Returns true if this task runner belongs to the current thread.

///

/*--cef()--*/

virtual bool BelongsToCurrentThread() =0;

///

// Returns true if this task runner is for the specified CEF thread.

///

/*--cef()--*/

virtual bool BelongsToThread(CefThreadId threadId) =0;

///

// Post a task for execution on the thread associated with this task runner.

// Execution will occur asynchronously.

///

/*--cef()--*/

virtual bool PostTask(CefRefPtr<CefTask> task) =0;

///

// Post a task for delayed execution on the thread associated with this task

// runner. Execution will occur asynchronously. Delayed tasks are not

// supported on V8 WebWorker threads and will be executed without the

// specified delay.

///

/*--cef()--*/

virtual bool PostDelayedTask(CefRefPtr<CefTask> task, int64 delay_ms) =0;

};

///

// Returns true if called on the specified thread. Equivalent to using

// CefTaskRunner::GetForThread(threadId)->BelongsToCurrentThread().

///

/*--cef()--*/

bool CefCurrentlyOn(CefThreadId threadId);

///

// Post a task for execution on the specified thread. Equivalent to

// using CefTaskRunner::GetForThread(threadId)->PostTask(task).

///

/*--cef()--*/

bool CefPostTask(CefThreadId threadId, CefRefPtr<CefTask> task);

///

// Post a task for delayed execution on the specified thread. Equivalent to

// using CefTaskRunner::GetForThread(threadId)->PostDelayedTask(task, delay_ms).

///

/*--cef()--*/

bool CefPostDelayedTask(CefThreadId threadId, CefRefPtr<CefTask> task,

int64 delay_ms);

#endif // CEF_INCLUDE_CEF_TASK_H_

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