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25 #ifndef CallbackTask_h
26 #define CallbackTask_h
28 #if ENABLE(MEDIA_STREAM)
30 #include "ScriptExecutionContext.h"
31 #include <wtf/Forward.h>
32 #include <wtf/PassRefPtr.h>
33 #include <wtf/RefPtr.h>
37 // Helper template to schedule calls to callbacks using their own script execution context.
38 // CallbackType is assumed to implement Scheduler and to be reference-counted.
39 template <typename CallbackType, typename ArgumentType>
40 class CallbackTask1 : public ScriptExecutionContext::Task {
42 static PassOwnPtr<CallbackTask1> create(PassRefPtr<CallbackType> callback, PassRefPtr<ArgumentType> data)
44 return adoptPtr(new CallbackTask1(callback, data));
47 virtual void performTask(ScriptExecutionContext*)
49 m_callback->handleEvent(m_data.get());
54 virtual ~Scheduler() { }
56 bool scheduleCallback(ScriptExecutionContext* context, PassRefPtr<ArgumentType> data)
59 context->postTask(CallbackTask1<CallbackType, ArgumentType>::create(static_cast<CallbackType*>(this), data));
67 CallbackTask1(PassRefPtr<CallbackType> callback, PassRefPtr<ArgumentType> data)
68 : m_callback(callback)
73 RefPtr<CallbackType> m_callback;
74 RefPtr<ArgumentType> m_data;
79 #endif // ENABLE(MEDIA_STREAM)
81 #endif // CallbackTask_h