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| 1 // Copyright 2014 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 #include "ash/accelerators/accelerator_dispatcher.h" |
| 6 |
| 7 #include "base/memory/scoped_ptr.h" |
| 8 #include "base/run_loop.h" |
| 9 #include "ui/events/event.h" |
| 10 #include "ui/events/platform/platform_event_dispatcher.h" |
| 11 #include "ui/events/platform/platform_event_source.h" |
| 12 #include "ui/events/platform/scoped_event_dispatcher.h" |
| 13 |
| 14 #if defined(USE_X11) |
| 15 #include <X11/Xlib.h> |
| 16 #endif |
| 17 |
| 18 namespace ash { |
| 19 |
| 20 namespace { |
| 21 |
| 22 #if defined(USE_OZONE) |
| 23 bool IsKeyEvent(const base::NativeEvent& native_event) { |
| 24 const ui::KeyEvent* event = static_cast<const ui::KeyEvent*>(native_event); |
| 25 return event->IsKeyEvent(); |
| 26 } |
| 27 #elif defined(USE_X11) |
| 28 bool IsKeyEvent(const XEvent* xev) { |
| 29 return xev->type == KeyPress || xev->type == KeyRelease; |
| 30 } |
| 31 #else |
| 32 #error Unknown build platform: you should have either use_ozone or use_x11. |
| 33 #endif |
| 34 |
| 35 scoped_ptr<ui::ScopedEventDispatcher> OverrideDispatcher( |
| 36 ui::PlatformEventDispatcher* dispatcher) { |
| 37 ui::PlatformEventSource* source = ui::PlatformEventSource::GetInstance(); |
| 38 return source ? source->OverrideDispatcher(dispatcher) |
| 39 : scoped_ptr<ui::ScopedEventDispatcher>(); |
| 40 } |
| 41 |
| 42 } // namespace |
| 43 |
| 44 class AcceleratorDispatcherLinux : public AcceleratorDispatcher, |
| 45 public ui::PlatformEventDispatcher { |
| 46 public: |
| 47 AcceleratorDispatcherLinux() |
| 48 : restore_dispatcher_(OverrideDispatcher(this)) {} |
| 49 |
| 50 virtual ~AcceleratorDispatcherLinux() {} |
| 51 |
| 52 private: |
| 53 // AcceleratorDispatcher: |
| 54 virtual scoped_ptr<base::RunLoop> CreateRunLoop() OVERRIDE { |
| 55 return scoped_ptr<base::RunLoop>(new base::RunLoop()); |
| 56 } |
| 57 |
| 58 // ui::PlatformEventDispatcher: |
| 59 virtual bool CanDispatchEvent(const ui::PlatformEvent& event) OVERRIDE { |
| 60 return true; |
| 61 } |
| 62 |
| 63 virtual uint32_t DispatchEvent(const ui::PlatformEvent& event) OVERRIDE { |
| 64 if (IsKeyEvent(event)) { |
| 65 ui::KeyEvent key_event(event, false); |
| 66 if (MenuClosedForPossibleAccelerator(key_event)) { |
| 67 XPutBackEvent(event->xany.display, event); |
| 68 return ui::POST_DISPATCH_QUIT_LOOP; |
| 69 } |
| 70 |
| 71 if (AcceleratorProcessedForKeyEvent(key_event)) |
| 72 return ui::POST_DISPATCH_NONE; |
| 73 } |
| 74 |
| 75 ui::PlatformEventDispatcher* prev = *restore_dispatcher_; |
| 76 return prev ? prev->DispatchEvent(event) |
| 77 : ui::POST_DISPATCH_PERFORM_DEFAULT; |
| 78 } |
| 79 |
| 80 scoped_ptr<ui::ScopedEventDispatcher> restore_dispatcher_; |
| 81 |
| 82 DISALLOW_COPY_AND_ASSIGN(AcceleratorDispatcherLinux); |
| 83 }; |
| 84 |
| 85 scoped_ptr<AcceleratorDispatcher> AcceleratorDispatcher::Create( |
| 86 base::MessagePumpDispatcher* nested_dispatcher) { |
| 87 return scoped_ptr<AcceleratorDispatcher>(new AcceleratorDispatcherLinux()); |
| 88 } |
| 89 |
| 90 } // namespace ash |
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