src/ui/aura/remote_window_tree_host_win.cc

   1 // Copyright (c) 2012 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 "ui/aura/remote_window_tree_host_win.h"
   6
   7 #include <windows.h>
   8
   9 #include <algorithm>
  10
  11 #include "base/message_loop/message_loop.h"
  12 #include "ipc/ipc_message.h"
  13 #include "ipc/ipc_sender.h"
  14 #include "ui/aura/client/aura_constants.h"
  15 #include "ui/aura/client/cursor_client.h"
  16 #include "ui/aura/window_event_dispatcher.h"
  17 #include "ui/aura/window_property.h"
  18 #include "ui/base/cursor/cursor_loader_win.h"
  19 #include "ui/base/ime/composition_text.h"
  20 #include "ui/base/ime/input_method.h"
  21 #include "ui/base/ime/remote_input_method_win.h"
  22 #include "ui/base/ime/text_input_client.h"
  23 #include "ui/base/view_prop.h"
  24 #include "ui/events/event_utils.h"
  25 #include "ui/events/keycodes/keyboard_code_conversion_win.h"
  26 #include "ui/gfx/insets.h"
  27 #include "ui/gfx/win/dpi.h"
  28 #include "ui/metro_viewer/metro_viewer_messages.h"
  29
  30 namespace aura {
  31
  32 namespace {
  33
  34 const char* kWindowTreeHostWinKey = "__AURA_REMOTE_WINDOW_TREE_HOST_WIN__";
  35
  36 // Sets the keystate for the virtual key passed in to down or up.
  37 void SetKeyState(uint8* key_states, bool key_down, uint32 virtual_key_code) {
  38   DCHECK(key_states);
  39
  40   if (key_down)
  41     key_states[virtual_key_code] |= 0x80;
  42   else
  43     key_states[virtual_key_code] &= 0x7F;
  44 }
  45
  46 // Sets the keyboard states for the Shift/Control/Alt/Caps lock keys.
  47 void SetVirtualKeyStates(uint32 flags) {
  48   uint8 keyboard_state[256] = {0};
  49   ::GetKeyboardState(keyboard_state);
  50
  51   SetKeyState(keyboard_state, !!(flags & ui::EF_SHIFT_DOWN), VK_SHIFT);
  52   SetKeyState(keyboard_state, !!(flags & ui::EF_CONTROL_DOWN), VK_CONTROL);
  53   SetKeyState(keyboard_state, !!(flags & ui::EF_ALT_DOWN), VK_MENU);
  54   SetKeyState(keyboard_state, !!(flags & ui::EF_CAPS_LOCK_DOWN), VK_CAPITAL);
  55   SetKeyState(keyboard_state, !!(flags & ui::EF_LEFT_MOUSE_BUTTON), VK_LBUTTON);
  56   SetKeyState(keyboard_state, !!(flags & ui::EF_RIGHT_MOUSE_BUTTON),
  57               VK_RBUTTON);
  58   SetKeyState(keyboard_state, !!(flags & ui::EF_MIDDLE_MOUSE_BUTTON),
  59               VK_MBUTTON);
  60
  61   ::SetKeyboardState(keyboard_state);
  62 }
  63
  64 void FillCompositionText(
  65     const base::string16& text,
  66     int32 selection_start,
  67     int32 selection_end,
  68     const std::vector<metro_viewer::UnderlineInfo>& underlines,
  69     ui::CompositionText* composition_text) {
  70   composition_text->Clear();
  71   composition_text->text = text;
  72   composition_text->selection.set_start(selection_start);
  73   composition_text->selection.set_end(selection_end);
  74   composition_text->underlines.resize(underlines.size());
  75   for (size_t i = 0; i < underlines.size(); ++i) {
  76     composition_text->underlines[i].start_offset = underlines[i].start_offset;
  77     composition_text->underlines[i].end_offset = underlines[i].end_offset;
  78     composition_text->underlines[i].color = SK_ColorBLACK;
  79     composition_text->underlines[i].thick = underlines[i].thick;
  80   }
  81 }
  82
  83 }  // namespace
  84
  85 void HandleOpenFile(const base::string16& title,
  86                     const base::FilePath& default_path,
  87                     const base::string16& filter,
  88                     const OpenFileCompletion& on_success,
  89                     const FileSelectionCanceled& on_failure) {
  90   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
  91   aura::RemoteWindowTreeHostWin::Instance()->HandleOpenFile(title,
  92                                                             default_path,
  93                                                             filter,
  94                                                             on_success,
  95                                                             on_failure);
  96 }
  97
  98 void HandleOpenMultipleFiles(const base::string16& title,
  99                              const base::FilePath& default_path,
 100                              const base::string16& filter,
 101                              const OpenMultipleFilesCompletion& on_success,
 102                              const FileSelectionCanceled& on_failure) {
 103   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
 104   aura::RemoteWindowTreeHostWin::Instance()->HandleOpenMultipleFiles(
 105       title,
 106       default_path,
 107       filter,
 108       on_success,
 109       on_failure);
 110 }
 111
 112 void HandleSaveFile(const base::string16& title,
 113                     const base::FilePath& default_path,
 114                     const base::string16& filter,
 115                     int filter_index,
 116                     const base::string16& default_extension,
 117                     const SaveFileCompletion& on_success,
 118                     const FileSelectionCanceled& on_failure) {
 119   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
 120   aura::RemoteWindowTreeHostWin::Instance()->HandleSaveFile(title,
 121                                                             default_path,
 122                                                             filter,
 123                                                             filter_index,
 124                                                             default_extension,
 125                                                             on_success,
 126                                                             on_failure);
 127 }
 128
 129 void HandleSelectFolder(const base::string16& title,
 130                         const SelectFolderCompletion& on_success,
 131                         const FileSelectionCanceled& on_failure) {
 132   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
 133   aura::RemoteWindowTreeHostWin::Instance()->HandleSelectFolder(title,
 134                                                                 on_success,
 135                                                                 on_failure);
 136 }
 137
 138 void HandleActivateDesktop(const base::FilePath& shortcut,
 139                            bool ash_exit) {
 140   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
 141   aura::RemoteWindowTreeHostWin::Instance()->HandleActivateDesktop(shortcut,
 142                                                                    ash_exit);
 143 }
 144
 145 void HandleMetroExit() {
 146   DCHECK(aura::RemoteWindowTreeHostWin::Instance());
 147   aura::RemoteWindowTreeHostWin::Instance()->HandleMetroExit();
 148 }
 149
 150 RemoteWindowTreeHostWin* g_instance = NULL;
 151
 152 // static
 153 RemoteWindowTreeHostWin* RemoteWindowTreeHostWin::Instance() {
 154   if (!g_instance)
 155     g_instance = new RemoteWindowTreeHostWin(gfx::Rect());
 156   return g_instance;
 157 }
 158
 159 // static
 160 void RemoteWindowTreeHostWin::SetInstance(RemoteWindowTreeHostWin* instance) {
 161   CHECK(!g_instance);
 162   g_instance = instance;
 163 }
 164
 165 RemoteWindowTreeHostWin::RemoteWindowTreeHostWin(const gfx::Rect& bounds)
 166     : remote_window_(NULL),
 167       host_(NULL),
 168       ignore_mouse_moves_until_set_cursor_ack_(false),
 169       event_flags_(0),
 170       window_size_(aura::WindowTreeHost::GetNativeScreenSize()) {
 171   prop_.reset(new ui::ViewProp(NULL, kWindowTreeHostWinKey, this));
 172   CreateCompositor(GetAcceleratedWidget());
 173 }
 174
 175 RemoteWindowTreeHostWin::~RemoteWindowTreeHostWin() {
 176   DestroyCompositor();
 177   DestroyDispatcher();
 178   g_instance = NULL;
 179 }
 180
 181 // static
 182 bool RemoteWindowTreeHostWin::IsValid() {
 183   return Instance()->remote_window_ != NULL;
 184 }
 185
 186 void RemoteWindowTreeHostWin::SetRemoteWindowHandle(HWND remote_window) {
 187   remote_window_ = remote_window;
 188   // Do not create compositor here, but in Connected() below.
 189   // See http://crbug.com/330179 and http://crbug.com/334380.
 190 }
 191
 192 void RemoteWindowTreeHostWin::Connected(IPC::Sender* host) {
 193   CHECK(host_ == NULL);
 194   DCHECK(remote_window_);
 195   host_ = host;
 196   // Recreate the compositor for the target surface represented by the
 197   // remote_window HWND.
 198   CreateCompositor(remote_window_);
 199   InitCompositor();
 200 }
 201
 202 void RemoteWindowTreeHostWin::Disconnected() {
 203   // Don't CHECK here, Disconnected is called on a channel error which can
 204   // happen before we're successfully Connected.
 205   if (!host_)
 206     return;
 207   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 208       GetRemoteInputMethodPrivate();
 209   if (remote_input_method_private)
 210     remote_input_method_private->SetRemoteDelegate(NULL);
 211   host_ = NULL;
 212   remote_window_ = NULL;
 213 }
 214
 215 bool RemoteWindowTreeHostWin::OnMessageReceived(const IPC::Message& message) {
 216   bool handled = true;
 217   IPC_BEGIN_MESSAGE_MAP(RemoteWindowTreeHostWin, message)
 218     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_MouseMoved, OnMouseMoved)
 219     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_MouseButton, OnMouseButton)
 220     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_KeyDown, OnKeyDown)
 221     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_KeyUp, OnKeyUp)
 222     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_Character, OnChar)
 223     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_WindowActivated,
 224                         OnWindowActivated)
 225     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_EdgeGesture, OnEdgeGesture)
 226     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_TouchDown,
 227                         OnTouchDown)
 228     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_TouchUp,
 229                         OnTouchUp)
 230     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_TouchMoved,
 231                         OnTouchMoved)
 232     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_FileSaveAsDone,
 233                         OnFileSaveAsDone)
 234     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_FileOpenDone,
 235                         OnFileOpenDone)
 236     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_MultiFileOpenDone,
 237                         OnMultiFileOpenDone)
 238     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_SelectFolderDone,
 239                         OnSelectFolderDone)
 240     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_SetCursorPosAck,
 241                         OnSetCursorPosAck)
 242     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_ImeCandidatePopupChanged,
 243                         OnImeCandidatePopupChanged)
 244     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_ImeCompositionChanged,
 245                         OnImeCompositionChanged)
 246     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_ImeTextCommitted,
 247                         OnImeTextCommitted)
 248     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_ImeInputSourceChanged,
 249                         OnImeInputSourceChanged)
 250     IPC_MESSAGE_UNHANDLED(handled = false)
 251   IPC_END_MESSAGE_MAP()
 252   return handled;
 253 }
 254
 255 void RemoteWindowTreeHostWin::HandleOpenURLOnDesktop(
 256     const base::FilePath& shortcut,
 257     const base::string16& url) {
 258   if (!host_)
 259     return;
 260   host_->Send(new MetroViewerHostMsg_OpenURLOnDesktop(shortcut, url));
 261 }
 262
 263 void RemoteWindowTreeHostWin::HandleActivateDesktop(
 264     const base::FilePath& shortcut,
 265     bool ash_exit) {
 266   if (!host_)
 267     return;
 268   host_->Send(new MetroViewerHostMsg_ActivateDesktop(shortcut, ash_exit));
 269 }
 270
 271 void RemoteWindowTreeHostWin::HandleMetroExit() {
 272   if (!host_)
 273     return;
 274   host_->Send(new MetroViewerHostMsg_MetroExit());
 275 }
 276
 277 void RemoteWindowTreeHostWin::HandleOpenFile(
 278     const base::string16& title,
 279     const base::FilePath& default_path,
 280     const base::string16& filter,
 281     const OpenFileCompletion& on_success,
 282     const FileSelectionCanceled& on_failure) {
 283   if (!host_)
 284     return;
 285
 286   // Can only have one of these operations in flight.
 287   DCHECK(file_open_completion_callback_.is_null());
 288   DCHECK(failure_callback_.is_null());
 289
 290   file_open_completion_callback_ = on_success;
 291   failure_callback_ = on_failure;
 292
 293   host_->Send(new MetroViewerHostMsg_DisplayFileOpen(title,
 294                                                      filter,
 295                                                      default_path,
 296                                                      false));
 297 }
 298
 299 void RemoteWindowTreeHostWin::HandleOpenMultipleFiles(
 300     const base::string16& title,
 301     const base::FilePath& default_path,
 302     const base::string16& filter,
 303     const OpenMultipleFilesCompletion& on_success,
 304     const FileSelectionCanceled& on_failure) {
 305   if (!host_)
 306     return;
 307
 308   // Can only have one of these operations in flight.
 309   DCHECK(multi_file_open_completion_callback_.is_null());
 310   DCHECK(failure_callback_.is_null());
 311   multi_file_open_completion_callback_ = on_success;
 312   failure_callback_ = on_failure;
 313
 314   host_->Send(new MetroViewerHostMsg_DisplayFileOpen(title,
 315                                                      filter,
 316                                                      default_path,
 317                                                      true));
 318 }
 319
 320 void RemoteWindowTreeHostWin::HandleSaveFile(
 321     const base::string16& title,
 322     const base::FilePath& default_path,
 323     const base::string16& filter,
 324     int filter_index,
 325     const base::string16& default_extension,
 326     const SaveFileCompletion& on_success,
 327     const FileSelectionCanceled& on_failure) {
 328   if (!host_)
 329     return;
 330
 331   MetroViewerHostMsg_SaveAsDialogParams params;
 332   params.title = title;
 333   params.default_extension = default_extension;
 334   params.filter = filter;
 335   params.filter_index = filter_index;
 336   params.suggested_name = default_path;
 337
 338   // Can only have one of these operations in flight.
 339   DCHECK(file_saveas_completion_callback_.is_null());
 340   DCHECK(failure_callback_.is_null());
 341   file_saveas_completion_callback_ = on_success;
 342   failure_callback_ = on_failure;
 343
 344   host_->Send(new MetroViewerHostMsg_DisplayFileSaveAs(params));
 345 }
 346
 347 void RemoteWindowTreeHostWin::HandleSelectFolder(
 348     const base::string16& title,
 349     const SelectFolderCompletion& on_success,
 350     const FileSelectionCanceled& on_failure) {
 351   if (!host_)
 352     return;
 353
 354   // Can only have one of these operations in flight.
 355   DCHECK(select_folder_completion_callback_.is_null());
 356   DCHECK(failure_callback_.is_null());
 357   select_folder_completion_callback_ = on_success;
 358   failure_callback_ = on_failure;
 359
 360   host_->Send(new MetroViewerHostMsg_DisplaySelectFolder(title));
 361 }
 362
 363 void RemoteWindowTreeHostWin::HandleWindowSizeChanged(uint32 width,
 364                                                       uint32 height) {
 365   SetBounds(gfx::Rect(0, 0, width, height));
 366 }
 367
 368 bool RemoteWindowTreeHostWin::IsForegroundWindow() {
 369   return ::GetForegroundWindow() == remote_window_;
 370 }
 371
 372 Window* RemoteWindowTreeHostWin::GetAshWindow() {
 373   return window();
 374 }
 375
 376 ui::EventSource* RemoteWindowTreeHostWin::GetEventSource() {
 377   return this;
 378 }
 379
 380 gfx::AcceleratedWidget RemoteWindowTreeHostWin::GetAcceleratedWidget() {
 381   if (remote_window_)
 382     return remote_window_;
 383   // Getting here should only happen for ash_unittests.exe and related code.
 384   return ::GetDesktopWindow();
 385 }
 386
 387 void RemoteWindowTreeHostWin::Show() {
 388   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 389       GetRemoteInputMethodPrivate();
 390   if (remote_input_method_private)
 391     remote_input_method_private->SetRemoteDelegate(this);
 392 }
 393
 394 void RemoteWindowTreeHostWin::Hide() {
 395   NOTIMPLEMENTED();
 396 }
 397
 398 gfx::Rect RemoteWindowTreeHostWin::GetBounds() const {
 399   return gfx::Rect(window_size_);
 400 }
 401
 402 void RemoteWindowTreeHostWin::SetBounds(const gfx::Rect& bounds) {
 403   window_size_ = bounds.size();
 404   OnHostResized(bounds.size());
 405 }
 406
 407 gfx::Point RemoteWindowTreeHostWin::GetLocationOnNativeScreen() const {
 408   return gfx::Point(0, 0);
 409 }
 410
 411 void RemoteWindowTreeHostWin::SetCapture() {
 412 }
 413
 414 void RemoteWindowTreeHostWin::ReleaseCapture() {
 415 }
 416
 417 void RemoteWindowTreeHostWin::SetCursorNative(gfx::NativeCursor native_cursor) {
 418   if (!host_)
 419     return;
 420   host_->Send(
 421     new MetroViewerHostMsg_SetCursor(uint64(native_cursor.platform())));
 422 }
 423
 424 void RemoteWindowTreeHostWin::MoveCursorToNative(const gfx::Point& location) {
 425   VLOG(1) << "In MoveCursorTo: " << location.x() << ", " << location.y();
 426   if (!host_)
 427     return;
 428
 429   // This function can be called in cases like when the mouse cursor is
 430   // restricted within a viewport (For e.g. LockCursor) which assumes that
 431   // subsequent mouse moves would be received starting with the new cursor
 432   // coordinates. This is a challenge for Windows ASH for the reasons
 433   // outlined below.
 434   // Other cases which don't expect this behavior should continue to work
 435   // without issues.
 436
 437   // The mouse events are received by the viewer process and sent to the
 438   // browser. If we invoke the SetCursor API here we continue to receive
 439   // mouse messages from the viewer which were posted before the SetCursor
 440   // API executes which messes up the state in the browser. To workaround
 441   // this we invoke the SetCursor API in the viewer process and ignore
 442   // mouse messages until we received an ACK from the viewer indicating that
 443   // the SetCursor operation completed.
 444   ignore_mouse_moves_until_set_cursor_ack_ = true;
 445   VLOG(1) << "In MoveCursorTo. Sending IPC";
 446   host_->Send(new MetroViewerHostMsg_SetCursorPos(location.x(), location.y()));
 447 }
 448
 449 void RemoteWindowTreeHostWin::OnCursorVisibilityChangedNative(bool show) {
 450   NOTIMPLEMENTED();
 451 }
 452
 453 void RemoteWindowTreeHostWin::PostNativeEvent(
 454     const base::NativeEvent& native_event) {
 455 }
 456
 457 void RemoteWindowTreeHostWin::OnDeviceScaleFactorChanged(
 458     float device_scale_factor) {
 459   NOTIMPLEMENTED();
 460 }
 461
 462 ui::EventProcessor* RemoteWindowTreeHostWin::GetEventProcessor() {
 463   return dispatcher();
 464 }
 465
 466 void RemoteWindowTreeHostWin::CancelComposition() {
 467   if (!host_)
 468     return;
 469   host_->Send(new MetroViewerHostMsg_ImeCancelComposition);
 470 }
 471
 472 void RemoteWindowTreeHostWin::OnTextInputClientUpdated(
 473     const std::vector<int32>& input_scopes,
 474     const std::vector<gfx::Rect>& composition_character_bounds) {
 475   if (!host_)
 476     return;
 477   std::vector<metro_viewer::CharacterBounds> character_bounds;
 478   for (size_t i = 0; i < composition_character_bounds.size(); ++i) {
 479     const gfx::Rect& rect = composition_character_bounds[i];
 480     metro_viewer::CharacterBounds bounds;
 481     bounds.left = rect.x();
 482     bounds.top = rect.y();
 483     bounds.right = rect.right();
 484     bounds.bottom = rect.bottom();
 485     character_bounds.push_back(bounds);
 486   }
 487   host_->Send(new MetroViewerHostMsg_ImeTextInputClientUpdated(
 488       input_scopes, character_bounds));
 489 }
 490
 491 gfx::Point PointFromNativeEvent(int32 x, int32 y) {
 492   static float scale_factor = gfx::GetModernUIScale();
 493   gfx::Point result( x * scale_factor, y * scale_factor);
 494   return result;
 495 }
 496
 497 void RemoteWindowTreeHostWin::OnMouseMoved(int32 x, int32 y, int32 flags) {
 498   if (ignore_mouse_moves_until_set_cursor_ack_)
 499     return;
 500
 501   gfx::Point location = PointFromNativeEvent(x, y);
 502   ui::MouseEvent event(ui::ET_MOUSE_MOVED, location, location, flags, 0);
 503   SendEventToProcessor(&event);
 504 }
 505
 506 void RemoteWindowTreeHostWin::OnMouseButton(
 507     const MetroViewerHostMsg_MouseButtonParams& params) {
 508   gfx::Point location = PointFromNativeEvent(params.x, params.y);
 509   ui::MouseEvent mouse_event(params.event_type, location, location,
 510                              static_cast<int>(params.flags),
 511                              static_cast<int>(params.changed_button));
 512
 513   SetEventFlags(params.flags | key_event_flags());
 514   if (params.event_type == ui::ET_MOUSEWHEEL) {
 515     int x_offset = params.is_horizontal_wheel ? params.extra : 0;
 516     int y_offset = !params.is_horizontal_wheel ? params.extra : 0;
 517     ui::MouseWheelEvent wheel_event(mouse_event, x_offset, y_offset);
 518     SendEventToProcessor(&wheel_event);
 519   } else if (params.event_type == ui::ET_MOUSE_PRESSED) {
 520     // TODO(shrikant): Ideally modify code in event.cc by adding automatic
 521     // tracking of double clicks in synthetic MouseEvent constructor code.
 522     // Non-synthetic MouseEvent constructor code does automatically track
 523     // this. Need to use some caution while modifying synthetic constructor
 524     // as many tests and other code paths depend on it and apparently
 525     // specifically depend on non implicit tracking of previous mouse event.
 526     if (last_mouse_click_event_ &&
 527         ui::MouseEvent::IsRepeatedClickEvent(mouse_event,
 528                                              *last_mouse_click_event_)) {
 529       mouse_event.SetClickCount(2);
 530     } else {
 531       mouse_event.SetClickCount(1);
 532     }
 533     last_mouse_click_event_ .reset(new ui::MouseEvent(mouse_event));
 534     SendEventToProcessor(&mouse_event);
 535   } else {
 536     SendEventToProcessor(&mouse_event);
 537   }
 538 }
 539
 540 void RemoteWindowTreeHostWin::OnKeyDown(uint32 vkey,
 541                                         uint32 repeat_count,
 542                                         uint32 scan_code,
 543                                         uint32 flags) {
 544   DispatchKeyboardMessage(ui::ET_KEY_PRESSED, vkey, repeat_count, scan_code,
 545                           flags, false);
 546 }
 547
 548 void RemoteWindowTreeHostWin::OnKeyUp(uint32 vkey,
 549                                       uint32 repeat_count,
 550                                       uint32 scan_code,
 551                                       uint32 flags) {
 552   DispatchKeyboardMessage(ui::ET_KEY_RELEASED, vkey, repeat_count, scan_code,
 553                           flags, false);
 554 }
 555
 556 void RemoteWindowTreeHostWin::OnChar(uint32 key_code,
 557                                      uint32 repeat_count,
 558                                      uint32 scan_code,
 559                                      uint32 flags) {
 560   DispatchKeyboardMessage(ui::ET_KEY_PRESSED, key_code, repeat_count,
 561                           scan_code, flags, true);
 562 }
 563
 564 void RemoteWindowTreeHostWin::OnWindowActivated() {
 565   OnHostActivated();
 566 }
 567
 568 void RemoteWindowTreeHostWin::OnEdgeGesture() {
 569   ui::GestureEvent event(
 570       ui::ET_GESTURE_WIN8_EDGE_SWIPE,
 571       0,
 572       0,
 573       0,
 574       ui::EventTimeForNow(),
 575       ui::GestureEventDetails(ui::ET_GESTURE_WIN8_EDGE_SWIPE, 0, 0),
 576       0);
 577   SendEventToProcessor(&event);
 578 }
 579
 580 void RemoteWindowTreeHostWin::OnTouchDown(int32 x,
 581                                           int32 y,
 582                                           uint64 timestamp,
 583                                           uint32 pointer_id) {
 584   gfx::Point location = PointFromNativeEvent(x, y);
 585   ui::TouchEvent event(ui::ET_TOUCH_PRESSED,
 586                        location,
 587                        pointer_id,
 588                        base::TimeDelta::FromMicroseconds(timestamp));
 589   SendEventToProcessor(&event);
 590 }
 591
 592 void RemoteWindowTreeHostWin::OnTouchUp(int32 x,
 593                                         int32 y,
 594                                         uint64 timestamp,
 595                                         uint32 pointer_id) {
 596   gfx::Point location = PointFromNativeEvent(x, y);
 597   ui::TouchEvent event(ui::ET_TOUCH_RELEASED,
 598                        location,
 599                        pointer_id,
 600                        base::TimeDelta::FromMicroseconds(timestamp));
 601   SendEventToProcessor(&event);
 602 }
 603
 604 void RemoteWindowTreeHostWin::OnTouchMoved(int32 x,
 605                                            int32 y,
 606                                            uint64 timestamp,
 607                                            uint32 pointer_id) {
 608   gfx::Point location = PointFromNativeEvent(x, y);
 609   ui::TouchEvent event(ui::ET_TOUCH_MOVED,
 610                        location,
 611                        pointer_id,
 612                        base::TimeDelta::FromMicroseconds(timestamp));
 613   SendEventToProcessor(&event);
 614 }
 615
 616 void RemoteWindowTreeHostWin::OnFileSaveAsDone(bool success,
 617                                                const base::FilePath& filename,
 618                                                int filter_index) {
 619   if (success)
 620     file_saveas_completion_callback_.Run(filename, filter_index, NULL);
 621   else
 622     failure_callback_.Run(NULL);
 623   file_saveas_completion_callback_.Reset();
 624   failure_callback_.Reset();
 625 }
 626
 627
 628 void RemoteWindowTreeHostWin::OnFileOpenDone(bool success,
 629                                              const base::FilePath& filename) {
 630   if (success)
 631     file_open_completion_callback_.Run(base::FilePath(filename), 0, NULL);
 632   else
 633     failure_callback_.Run(NULL);
 634   file_open_completion_callback_.Reset();
 635   failure_callback_.Reset();
 636 }
 637
 638 void RemoteWindowTreeHostWin::OnMultiFileOpenDone(
 639     bool success,
 640     const std::vector<base::FilePath>& files) {
 641   if (success)
 642     multi_file_open_completion_callback_.Run(files, NULL);
 643   else
 644     failure_callback_.Run(NULL);
 645   multi_file_open_completion_callback_.Reset();
 646   failure_callback_.Reset();
 647 }
 648
 649 void RemoteWindowTreeHostWin::OnSelectFolderDone(
 650     bool success,
 651     const base::FilePath& folder) {
 652   if (success)
 653     select_folder_completion_callback_.Run(base::FilePath(folder), 0, NULL);
 654   else
 655     failure_callback_.Run(NULL);
 656   select_folder_completion_callback_.Reset();
 657   failure_callback_.Reset();
 658 }
 659
 660 void RemoteWindowTreeHostWin::OnSetCursorPosAck() {
 661   DCHECK(ignore_mouse_moves_until_set_cursor_ack_);
 662   ignore_mouse_moves_until_set_cursor_ack_ = false;
 663 }
 664
 665 ui::RemoteInputMethodPrivateWin*
 666 RemoteWindowTreeHostWin::GetRemoteInputMethodPrivate() {
 667   ui::InputMethod* input_method = GetAshWindow()->GetProperty(
 668       aura::client::kRootWindowInputMethodKey);
 669   return ui::RemoteInputMethodPrivateWin::Get(input_method);
 670 }
 671
 672 void RemoteWindowTreeHostWin::OnImeCandidatePopupChanged(bool visible) {
 673   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 674       GetRemoteInputMethodPrivate();
 675   if (!remote_input_method_private)
 676     return;
 677   remote_input_method_private->OnCandidatePopupChanged(visible);
 678 }
 679
 680 void RemoteWindowTreeHostWin::OnImeCompositionChanged(
 681     const base::string16& text,
 682     int32 selection_start,
 683     int32 selection_end,
 684     const std::vector<metro_viewer::UnderlineInfo>& underlines) {
 685   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 686       GetRemoteInputMethodPrivate();
 687   if (!remote_input_method_private)
 688     return;
 689   ui::CompositionText composition_text;
 690   FillCompositionText(
 691       text, selection_start, selection_end, underlines, &composition_text);
 692   remote_input_method_private->OnCompositionChanged(composition_text);
 693 }
 694
 695 void RemoteWindowTreeHostWin::OnImeTextCommitted(const base::string16& text) {
 696   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 697       GetRemoteInputMethodPrivate();
 698   if (!remote_input_method_private)
 699     return;
 700   remote_input_method_private->OnTextCommitted(text);
 701 }
 702
 703 void RemoteWindowTreeHostWin::OnImeInputSourceChanged(uint16 language_id,
 704                                                       bool is_ime) {
 705   ui::RemoteInputMethodPrivateWin* remote_input_method_private =
 706       GetRemoteInputMethodPrivate();
 707   if (!remote_input_method_private)
 708     return;
 709   remote_input_method_private->OnInputSourceChanged(language_id, is_ime);
 710 }
 711
 712 void RemoteWindowTreeHostWin::DispatchKeyboardMessage(ui::EventType type,
 713                                                       uint32 vkey,
 714                                                       uint32 repeat_count,
 715                                                       uint32 scan_code,
 716                                                       uint32 flags,
 717                                                       bool is_character) {
 718   SetEventFlags(flags | mouse_event_flags());
 719   if (base::MessageLoop::current()->IsNested()) {
 720     int index = (flags & ui::EF_ALT_DOWN) ? 1 : 0;
 721     const int char_message[] = {WM_CHAR, WM_SYSCHAR};
 722     const int keydown_message[] = {WM_KEYDOWN, WM_SYSKEYDOWN};
 723     const int keyup_message[] = {WM_KEYUP, WM_SYSKEYUP};
 724     uint32 message = is_character
 725                          ? char_message[index]
 726                          : (type == ui::ET_KEY_PRESSED ? keydown_message[index]
 727                                                        : keyup_message[index]);
 728     ::PostThreadMessage(::GetCurrentThreadId(),
 729                         message,
 730                         vkey,
 731                         repeat_count | scan_code >> 15);
 732   } else {
 733     ui::KeyEvent event(type,
 734                        ui::KeyboardCodeForWindowsKeyCode(vkey),
 735                        flags,
 736                        is_character);
 737     SendEventToProcessor(&event);
 738   }
 739 }
 740
 741 void RemoteWindowTreeHostWin::SetEventFlags(uint32 flags) {
 742   if (flags == event_flags_)
 743     return;
 744   event_flags_ = flags;
 745   SetVirtualKeyStates(event_flags_);
 746 }
 747
 748 }  // namespace aura