Refactor and move ash independent nested accelerator code to ui/wm/core

ash/accelerators/accelerator_dispatcher_linux.cc

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ash/accelerators/accelerator_dispatcher.h"
-
-#include "base/memory/scoped_ptr.h"
-#include "base/run_loop.h"
-#include "ui/events/event.h"
-#include "ui/events/platform/platform_event_dispatcher.h"
-#include "ui/events/platform/platform_event_source.h"
-#include "ui/events/platform/scoped_event_dispatcher.h"
-
-#if defined(USE_X11)
-#include <X11/Xlib.h>
-#endif
-
-namespace ash {
-
-namespace {
-
-#if defined(USE_OZONE)
-bool IsKeyEvent(const base::NativeEvent& native_event) {
-  const ui::KeyEvent* event = static_cast<const ui::KeyEvent*>(native_event);
-  return event->IsKeyEvent();
-}
-#elif defined(USE_X11)
-bool IsKeyEvent(const XEvent* xev) {
-  return xev->type == KeyPress || xev->type == KeyRelease;
-}
-#else
-#error Unknown build platform: you should have either use_ozone or use_x11.
-#endif
-
-scoped_ptr<ui::ScopedEventDispatcher> OverrideDispatcher(
-    ui::PlatformEventDispatcher* dispatcher) {
-  ui::PlatformEventSource* source = ui::PlatformEventSource::GetInstance();
-  return source ? source->OverrideDispatcher(dispatcher)
-                : scoped_ptr<ui::ScopedEventDispatcher>();
-}
-
-}  // namespace
-
-class AcceleratorDispatcherLinux : public AcceleratorDispatcher,
-                                   public ui::PlatformEventDispatcher {
- public:
-  AcceleratorDispatcherLinux()
-      : restore_dispatcher_(OverrideDispatcher(this)) {}
-
-  virtual ~AcceleratorDispatcherLinux() {}
-
- private:
-  // AcceleratorDispatcher:
-  virtual scoped_ptr<base::RunLoop> CreateRunLoop() OVERRIDE {
-    return scoped_ptr<base::RunLoop>(new base::RunLoop());
-  }
-
-  // ui::PlatformEventDispatcher:
-  virtual bool CanDispatchEvent(const ui::PlatformEvent& event) OVERRIDE {
-    return true;
-  }
-
-  virtual uint32_t DispatchEvent(const ui::PlatformEvent& event) OVERRIDE {
-    if (IsKeyEvent(event)) {
-      ui::KeyEvent key_event(event, false);
-      if (MenuClosedForPossibleAccelerator(key_event)) {
-#if defined(USE_X11)
-        XPutBackEvent(event->xany.display, event);
-#else
-        NOTIMPLEMENTED();
-#endif
-        return ui::POST_DISPATCH_NONE;
-      }
-
-      if (AcceleratorProcessedForKeyEvent(key_event))
-        return ui::POST_DISPATCH_NONE;
-    }
-
-    ui::PlatformEventDispatcher* prev = *restore_dispatcher_;
-    return prev ? prev->DispatchEvent(event)
-                : ui::POST_DISPATCH_PERFORM_DEFAULT;
-  }
-
-  scoped_ptr<ui::ScopedEventDispatcher> restore_dispatcher_;
-
-  DISALLOW_COPY_AND_ASSIGN(AcceleratorDispatcherLinux);
-};
-
-scoped_ptr<AcceleratorDispatcher> AcceleratorDispatcher::Create(
-    base::MessagePumpDispatcher* nested_dispatcher) {
-  return scoped_ptr<AcceleratorDispatcher>(new AcceleratorDispatcherLinux());
-}
-
-}  // namespace ash