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34 #include "webkit/support/webkit_support.h"
35 #include <wtf/OwnPtr.h>
36 #include <wtf/Vector.h>
40 // WebTask represents a task which can run by postTask() or postDelayedTask().
41 // it is named "WebTask", not "Task", to avoid conflist with base/task.h.
42 class WebTask : public webkit_support::TaskAdaptor {
45 // The main code of this task.
46 // An implementation of run() should return immediately if cancel() was called.
47 virtual void run() = 0;
48 virtual void cancel() = 0;
52 virtual void Run() { run(); }
61 ~TaskList() { revokeAll(); }
62 void registerTask(WebTask* task) { m_tasks.append(task); }
63 void unregisterTask(WebTask*);
67 Vector<WebTask*> m_tasks;
70 // A task containing an object pointer of class T. Is is supposed that
71 // runifValid() calls a member function of the object pointer.
72 // Class T must have "TaskList* taskList()".
73 template<class T> class MethodTask: public WebTask {
75 MethodTask(T* object): WebTask(object->taskList()), m_object(object) { }
84 m_taskList->unregisterTask(this);
87 virtual void runIfValid() = 0;
93 void postTask(WebTask*);
94 void postDelayedTask(WebTask*, int64_t ms);