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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_MESSAGE_PUMP_X_H | 5 #ifndef BASE_MESSAGE_PUMP_X_H |
| 6 #define BASE_MESSAGE_PUMP_X_H | 6 #define BASE_MESSAGE_PUMP_X_H |
| 7 | 7 |
| 8 #include "base/message_pump.h" | 8 #include "base/message_pump.h" |
| 9 #include "base/message_pump_glib.h" | 9 #include "base/message_pump_glib.h" |
| 10 | 10 |
| 11 #include <bitset> | 11 #include <bitset> |
| 12 | 12 |
| 13 #include <glib.h> | 13 #include <glib.h> |
| 14 #include <gtk/gtk.h> | 14 #include <gtk/gtk.h> |
| 15 | 15 |
| 16 typedef union _XEvent XEvent; | 16 typedef union _XEvent XEvent; |
| 17 typedef struct _XDisplay Display; | 17 typedef struct _XDisplay Display; |
| 18 | 18 |
| 19 namespace base { | 19 namespace base { |
| 20 | 20 |
| 21 // The documentation for this class is in message_pump_glib.h | 21 // The documentation for this class is in message_pump_glib.h |
| 22 class BASE_API MessagePumpObserver { | 22 class BASE_EXPORT MessagePumpObserver { |
| 23 public: | 23 public: |
| 24 enum EventStatus { | 24 enum EventStatus { |
| 25 EVENT_CONTINUE, // The event should be dispatched as normal. | 25 EVENT_CONTINUE, // The event should be dispatched as normal. |
| 26 EVENT_HANDLED // The event should not be processed any farther. | 26 EVENT_HANDLED // The event should not be processed any farther. |
| 27 }; | 27 }; |
| 28 | 28 |
| 29 // This method is called before processing an XEvent. If the method returns | 29 // This method is called before processing an XEvent. If the method returns |
| 30 // EVENT_HANDLED, it indicates the event has already been handled, so the | 30 // EVENT_HANDLED, it indicates the event has already been handled, so the |
| 31 // event is not processed any farther. If the method returns EVENT_CONTINUE, | 31 // event is not processed any farther. If the method returns EVENT_CONTINUE, |
| 32 // the event dispatching proceeds as normal. | 32 // the event dispatching proceeds as normal. |
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| 52 // Dispatches the event. EVENT_IGNORED is returned if the event was ignored | 52 // Dispatches the event. EVENT_IGNORED is returned if the event was ignored |
| 53 // (i.e. not processed). EVENT_PROCESSED is returned if the event was | 53 // (i.e. not processed). EVENT_PROCESSED is returned if the event was |
| 54 // processed. The nested loop exits immediately if EVENT_QUIT is returned. | 54 // processed. The nested loop exits immediately if EVENT_QUIT is returned. |
| 55 virtual DispatchStatus Dispatch(XEvent* xevent) = 0; | 55 virtual DispatchStatus Dispatch(XEvent* xevent) = 0; |
| 56 | 56 |
| 57 protected: | 57 protected: |
| 58 virtual ~MessagePumpDispatcher() {} | 58 virtual ~MessagePumpDispatcher() {} |
| 59 }; | 59 }; |
| 60 | 60 |
| 61 // This class implements a message-pump for dispatching X events. | 61 // This class implements a message-pump for dispatching X events. |
| 62 class BASE_API MessagePumpX : public MessagePumpGlib { | 62 class BASE_EXPORT MessagePumpX : public MessagePumpGlib { |
| 63 public: | 63 public: |
| 64 MessagePumpX(); | 64 MessagePumpX(); |
| 65 virtual ~MessagePumpX(); | 65 virtual ~MessagePumpX(); |
| 66 | 66 |
| 67 // Indicates whether a GDK event was injected by chrome (when |true|) or if it | 67 // Indicates whether a GDK event was injected by chrome (when |true|) or if it |
| 68 // was captured and being processed by GDK (when |false|). | 68 // was captured and being processed by GDK (when |false|). |
| 69 bool IsDispatchingEvent(void) { return dispatching_event_; } | 69 bool IsDispatchingEvent(void) { return dispatching_event_; } |
| 70 | 70 |
| 71 // Overridden from MessagePumpGlib: | 71 // Overridden from MessagePumpGlib: |
| 72 virtual bool RunOnce(GMainContext* context, bool block) OVERRIDE; | 72 virtual bool RunOnce(GMainContext* context, bool block) OVERRIDE; |
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| 138 std::bitset<GDK_EVENT_LAST> capture_gdk_events_; | 138 std::bitset<GDK_EVENT_LAST> capture_gdk_events_; |
| 139 | 139 |
| 140 DISALLOW_COPY_AND_ASSIGN(MessagePumpX); | 140 DISALLOW_COPY_AND_ASSIGN(MessagePumpX); |
| 141 }; | 141 }; |
| 142 | 142 |
| 143 typedef MessagePumpX MessagePumpForUI; | 143 typedef MessagePumpX MessagePumpForUI; |
| 144 | 144 |
| 145 } // namespace base | 145 } // namespace base |
| 146 | 146 |
| 147 #endif // BASE_MESSAGE_PUMP_X_H | 147 #endif // BASE_MESSAGE_PUMP_X_H |
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