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comparison: ipc/chromium/src/base/message_pump_qt.h
ipc/chromium/src/base/message_pump_qt.h
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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef BASE_MESSAGE_PUMP_QT_H_ | |
| 6 #define BASE_MESSAGE_PUMP_QT_H_ | |
| 7 | |
| 8 #include <qobject.h> | |
| 9 | |
| 10 #include "base/message_pump.h" | |
| 11 #include "base/time.h" | |
| 12 | |
| 13 class QTimer; | |
| 14 | |
| 15 namespace base { | |
| 16 | |
| 17 class MessagePumpForUI; | |
| 18 | |
| 19 class MessagePumpQt : public QObject { | |
| 20 Q_OBJECT | |
| 21 | |
| 22 public: | |
| 23 MessagePumpQt(MessagePumpForUI &pump); | |
| 24 ~MessagePumpQt(); | |
| 25 | |
| 26 virtual bool event (QEvent *e); | |
| 27 void scheduleDelayedIfNeeded(const TimeTicks& delayed_work_time); | |
| 28 | |
| 29 public Q_SLOTS: | |
| 30 void dispatchDelayed(); | |
| 31 | |
| 32 private: | |
| 33 base::MessagePumpForUI &pump; | |
| 34 QTimer* mTimer; | |
| 35 }; | |
| 36 | |
| 37 // This class implements a MessagePump needed for TYPE_UI MessageLoops on | |
| 38 // OS_LINUX platforms using QApplication event loop | |
| 39 class MessagePumpForUI : public MessagePump { | |
| 40 | |
| 41 public: | |
| 42 MessagePumpForUI(); | |
| 43 ~MessagePumpForUI(); | |
| 44 | |
| 45 virtual void Run(Delegate* delegate); | |
| 46 virtual void Quit(); | |
| 47 virtual void ScheduleWork(); | |
| 48 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time); | |
| 49 | |
| 50 // Internal methods used for processing the pump callbacks. They are | |
| 51 // public for simplicity but should not be used directly. | |
| 52 // HandleDispatch is called after the poll has completed. | |
| 53 void HandleDispatch(); | |
| 54 | |
| 55 private: | |
| 56 // We may make recursive calls to Run, so we save state that needs to be | |
| 57 // separate between them in this structure type. | |
| 58 struct RunState { | |
| 59 Delegate* delegate; | |
| 60 | |
| 61 // Used to flag that the current Run() invocation should return ASAP. | |
| 62 bool should_quit; | |
| 63 | |
| 64 // Used to count how many Run() invocations are on the stack. | |
| 65 int run_depth; | |
| 66 }; | |
| 67 | |
| 68 RunState* state_; | |
| 69 | |
| 70 // This is the time when we need to do delayed work. | |
| 71 TimeTicks delayed_work_time_; | |
| 72 | |
| 73 // MessagePump implementation for Qt based on the GLib implement. | |
| 74 // On Qt we use a QObject base class and the | |
| 75 // default qApp in order to process events through QEventLoop. | |
| 76 MessagePumpQt qt_pump; | |
| 77 | |
| 78 DISALLOW_COPY_AND_ASSIGN(MessagePumpForUI); | |
| 79 }; | |
| 80 | |
| 81 } // namespace base | |
| 82 | |
| 83 #endif // BASE_MESSAGE_PUMP_QT_H_ |
