Rename EventExecutor to InputInjector.

remoting/host/win/session_event_executor.cc

-// Copyright (c) 2012 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 "remoting/host/win/session_event_executor.h"
-
-#include <set>
-#include <string>
-
-#include "base/bind.h"
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/location.h"
-#include "base/single_thread_task_runner.h"
-#include "base/win/windows_version.h"
-#include "media/video/capture/screen/win/desktop.h"
-#include "media/video/capture/screen/win/scoped_thread_desktop.h"
-#include "remoting/host/sas_injector.h"
-#include "remoting/proto/event.pb.h"
-
-namespace {
-
-const uint32 kUsbLeftControl =  0x0700e0;
-const uint32 kUsbRightControl = 0x0700e4;
-const uint32 kUsbLeftAlt =  0x0700e2;
-const uint32 kUsbRightAlt = 0x0700e6;
-const uint32 kUsbDelete = 0x07004c;
-
-bool CheckCtrlAndAltArePressed(const std::set<uint32>& pressed_keys) {
-  size_t ctrl_keys = pressed_keys.count(kUsbLeftControl) +
-    pressed_keys.count(kUsbRightControl);
-  size_t alt_keys = pressed_keys.count(kUsbLeftAlt) +
-    pressed_keys.count(kUsbRightAlt);
-  return ctrl_keys != 0 && alt_keys != 0 &&
-    (ctrl_keys + alt_keys == pressed_keys.size());
-}
-
-} // namespace
-
-namespace remoting {
-
-using protocol::ClipboardEvent;
-using protocol::MouseEvent;
-using protocol::KeyEvent;
-
-class SessionEventExecutorWin::Core
-    : public base::RefCountedThreadSafe<SessionEventExecutorWin::Core>,
-      public EventExecutor {
- public:
-  Core(
-      scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
-      scoped_ptr<EventExecutor> nested_executor,
-      scoped_refptr<base::SingleThreadTaskRunner> inject_sas_task_runner,
-      const base::Closure& inject_sas);
-
-  // EventExecutor implementation.
-  virtual void Start(
-      scoped_ptr<protocol::ClipboardStub> client_clipboard) OVERRIDE;
-
-  // protocol::ClipboardStub implementation.
-  virtual void InjectClipboardEvent(
-      const protocol::ClipboardEvent& event) OVERRIDE;
-
-  // protocol::InputStub implementation.
-  virtual void InjectKeyEvent(const protocol::KeyEvent& event) OVERRIDE;
-  virtual void InjectMouseEvent(const protocol::MouseEvent& event) OVERRIDE;
-
- private:
-  friend class base::RefCountedThreadSafe<Core>;
-  virtual ~Core();
-
-  // Switches to the desktop receiving a user input if different from
-  // the current one.
-  void SwitchToInputDesktop();
-
-  scoped_refptr<base::SingleThreadTaskRunner> input_task_runner_;
-
-  // Pointer to the next event executor.
-  scoped_ptr<EventExecutor> nested_executor_;
-
-  scoped_refptr<base::SingleThreadTaskRunner> inject_sas_task_runner_;
-
-  media::ScopedThreadDesktop desktop_;
-
-  // Used to inject Secure Attention Sequence on Vista+.
-  base::Closure inject_sas_;
-
-  // Used to inject Secure Attention Sequence on XP.
-  scoped_ptr<SasInjector> sas_injector_;
-
-  // Keys currently pressed by the client, used to detect Ctrl-Alt-Del.
-  std::set<uint32> pressed_keys_;
-
-  DISALLOW_COPY_AND_ASSIGN(Core);
-};
-
-SessionEventExecutorWin::Core::Core(
-    scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
-    scoped_ptr<EventExecutor> nested_executor,
-    scoped_refptr<base::SingleThreadTaskRunner> inject_sas_task_runner,
-    const base::Closure& inject_sas)
-    : input_task_runner_(input_task_runner),
-      nested_executor_(nested_executor.Pass()),
-      inject_sas_task_runner_(inject_sas_task_runner),
-      inject_sas_(inject_sas) {
-}
-
-void SessionEventExecutorWin::Core::Start(
-    scoped_ptr<protocol::ClipboardStub> client_clipboard) {
-  if (!input_task_runner_->BelongsToCurrentThread()) {
-    input_task_runner_->PostTask(
-        FROM_HERE,
-        base::Bind(&Core::Start, this, base::Passed(&client_clipboard)));
-    return;
-  }
-
-  nested_executor_->Start(client_clipboard.Pass());
-}
-
-void SessionEventExecutorWin::Core::InjectClipboardEvent(
-    const ClipboardEvent& event) {
-  if (!input_task_runner_->BelongsToCurrentThread()) {
-    input_task_runner_->PostTask(
-        FROM_HERE, base::Bind(&Core::InjectClipboardEvent, this, event));
-    return;
-  }
-
-  nested_executor_->InjectClipboardEvent(event);
-}
-
-void SessionEventExecutorWin::Core::InjectKeyEvent(const KeyEvent& event) {
-  if (!input_task_runner_->BelongsToCurrentThread()) {
-    input_task_runner_->PostTask(
-        FROM_HERE, base::Bind(&Core::InjectKeyEvent, this, event));
-    return;
-  }
-
-  // HostEventDispatcher should drop events lacking the pressed field.
-  DCHECK(event.has_pressed());
-
-  if (event.has_usb_keycode()) {
-    if (event.pressed()) {
-      // Simulate secure attention sequence if Ctrl-Alt-Del was just pressed.
-      if (event.usb_keycode() == kUsbDelete &&
-          CheckCtrlAndAltArePressed(pressed_keys_)) {
-        VLOG(3) << "Sending Secure Attention Sequence to console";
-
-        if (base::win::GetVersion() < base::win::VERSION_VISTA) {
-          if (!sas_injector_)
-            sas_injector_ = SasInjector::Create();
-          if (!sas_injector_->InjectSas())
-            LOG(ERROR) << "Failed to inject Secure Attention Sequence.";
-        } else {
-          inject_sas_task_runner_->PostTask(FROM_HERE, inject_sas_);
-        }
-      }
-
-      pressed_keys_.insert(event.usb_keycode());
-    } else {
-      pressed_keys_.erase(event.usb_keycode());
-    }
-  }
-
-  SwitchToInputDesktop();
-  nested_executor_->InjectKeyEvent(event);
-}
-
-void SessionEventExecutorWin::Core::InjectMouseEvent(const MouseEvent& event) {
-  if (!input_task_runner_->BelongsToCurrentThread()) {
-    input_task_runner_->PostTask(
-        FROM_HERE, base::Bind(&Core::InjectMouseEvent, this, event));
-    return;
-  }
-
-  SwitchToInputDesktop();
-  nested_executor_->InjectMouseEvent(event);
-}
-
-SessionEventExecutorWin::Core::~Core() {
-}
-
-void SessionEventExecutorWin::Core::SwitchToInputDesktop() {
-  // Switch to the desktop receiving user input if different from the current
-  // one.
-  scoped_ptr<media::Desktop> input_desktop = media::Desktop::GetInputDesktop();
-  if (input_desktop.get() != NULL && !desktop_.IsSame(*input_desktop)) {
-    // If SetThreadDesktop() fails, the thread is still assigned a desktop.
-    // So we can continue capture screen bits, just from a diffected desktop.
-    desktop_.SetThreadDesktop(input_desktop.Pass());
-  }
-}
-
-SessionEventExecutorWin::SessionEventExecutorWin(
-    scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
-    scoped_ptr<EventExecutor> nested_executor,
-    scoped_refptr<base::SingleThreadTaskRunner> inject_sas_task_runner,
-    const base::Closure& inject_sas) {
-  core_ = new Core(input_task_runner, nested_executor.Pass(),
-                   inject_sas_task_runner, inject_sas);
-}
-
-SessionEventExecutorWin::~SessionEventExecutorWin() {
-}
-
-void SessionEventExecutorWin::Start(
-    scoped_ptr<protocol::ClipboardStub> client_clipboard) {
-  core_->Start(client_clipboard.Pass());
-}
-
-void SessionEventExecutorWin::InjectClipboardEvent(
-    const protocol::ClipboardEvent& event) {
-  core_->InjectClipboardEvent(event);
-}
-
-void SessionEventExecutorWin::InjectKeyEvent(const protocol::KeyEvent& event) {
-  core_->InjectKeyEvent(event);
-}
-
-void SessionEventExecutorWin::InjectMouseEvent(
-    const protocol::MouseEvent& event) {
-  core_->InjectMouseEvent(event);
-}
-
-}  // namespace remoting