content/browser/renderer_host/render_widget_host_view_aura.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
   6
   7 #include <set>
   8
   9 #include "base/auto_reset.h"
  10 #include "base/basictypes.h"
  11 #include "base/bind.h"
  12 #include "base/callback_helpers.h"
  13 #include "base/command_line.h"
  14 #include "base/logging.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/trace_event/trace_event.h"
  18 #include "cc/layers/layer.h"
  19 #include "cc/output/copy_output_request.h"
  20 #include "cc/output/copy_output_result.h"
  21 #include "cc/resources/texture_mailbox.h"
  22 #include "cc/trees/layer_tree_settings.h"
  23 #include "content/browser/accessibility/browser_accessibility_manager.h"
  24 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  25 #include "content/browser/bad_message.h"
  26 #include "content/browser/frame_host/frame_tree.h"
  27 #include "content/browser/frame_host/frame_tree_node.h"
  28 #include "content/browser/frame_host/render_frame_host_impl.h"
  29 #include "content/browser/gpu/compositor_util.h"
  30 #include "content/browser/renderer_host/compositor_resize_lock_aura.h"
  31 #include "content/browser/renderer_host/dip_util.h"
  32 #include "content/browser/renderer_host/input/synthetic_gesture_target_aura.h"
  33 #include "content/browser/renderer_host/input/web_input_event_util.h"
  34 #include "content/browser/renderer_host/overscroll_controller.h"
  35 #include "content/browser/renderer_host/render_view_host_delegate.h"
  36 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
  37 #include "content/browser/renderer_host/render_view_host_impl.h"
  38 #include "content/browser/renderer_host/render_widget_host_impl.h"
  39 #include "content/browser/renderer_host/ui_events_helper.h"
  40 #include "content/browser/renderer_host/web_input_event_aura.h"
  41 #include "content/common/gpu/client/gl_helper.h"
  42 #include "content/common/gpu/gpu_messages.h"
  43 #include "content/common/view_messages.h"
  44 #include "content/public/browser/content_browser_client.h"
  45 #include "content/public/browser/overscroll_configuration.h"
  46 #include "content/public/browser/render_view_host.h"
  47 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
  48 #include "content/public/browser/user_metrics.h"
  49 #include "content/public/common/content_switches.h"
  50 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
  51 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
  52 #include "third_party/WebKit/public/web/WebInputEvent.h"
  53 #include "ui/aura/client/aura_constants.h"
  54 #include "ui/aura/client/cursor_client.h"
  55 #include "ui/aura/client/cursor_client_observer.h"
  56 #include "ui/aura/client/focus_client.h"
  57 #include "ui/aura/client/screen_position_client.h"
  58 #include "ui/aura/client/window_tree_client.h"
  59 #include "ui/aura/env.h"
  60 #include "ui/aura/window.h"
  61 #include "ui/aura/window_event_dispatcher.h"
  62 #include "ui/aura/window_observer.h"
  63 #include "ui/aura/window_tracker.h"
  64 #include "ui/aura/window_tree_host.h"
  65 #include "ui/base/clipboard/scoped_clipboard_writer.h"
  66 #include "ui/base/hit_test.h"
  67 #include "ui/base/ime/input_method.h"
  68 #include "ui/base/ui_base_types.h"
  69 #include "ui/compositor/compositor_vsync_manager.h"
  70 #include "ui/compositor/dip_util.h"
  71 #include "ui/events/blink/blink_event_util.h"
  72 #include "ui/events/event.h"
  73 #include "ui/events/event_utils.h"
  74 #include "ui/events/gestures/gesture_recognizer.h"
  75 #include "ui/gfx/canvas.h"
  76 #include "ui/gfx/display.h"
  77 #include "ui/gfx/geometry/rect_conversions.h"
  78 #include "ui/gfx/geometry/size_conversions.h"
  79 #include "ui/gfx/screen.h"
  80 #include "ui/gfx/skia_util.h"
  81 #include "ui/wm/public/activation_client.h"
  82 #include "ui/wm/public/scoped_tooltip_disabler.h"
  83 #include "ui/wm/public/tooltip_client.h"
  84 #include "ui/wm/public/transient_window_client.h"
  85 #include "ui/wm/public/window_types.h"
  86
  87 #if defined(OS_WIN)
  88 #include "content/browser/accessibility/browser_accessibility_manager_win.h"
  89 #include "content/browser/accessibility/browser_accessibility_win.h"
  90 #include "content/browser/renderer_host/legacy_render_widget_host_win.h"
  91 #include "content/common/plugin_constants_win.h"
  92 #include "ui/base/win/hidden_window.h"
  93 #include "ui/gfx/gdi_util.h"
  94 #include "ui/gfx/win/dpi.h"
  95 #endif
  96
  97 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
  98 #include "content/common/input_messages.h"
  99 #include "ui/events/linux/text_edit_command_auralinux.h"
 100 #include "ui/events/linux/text_edit_key_bindings_delegate_auralinux.h"
 101 #endif
 102
 103 using gfx::RectToSkIRect;
 104 using gfx::SkIRectToRect;
 105
 106 using blink::WebScreenInfo;
 107 using blink::WebInputEvent;
 108 using blink::WebGestureEvent;
 109 using blink::WebTouchEvent;
 110
 111 namespace content {
 112
 113 namespace {
 114
 115 // In mouse lock mode, we need to prevent the (invisible) cursor from hitting
 116 // the border of the view, in order to get valid movement information. However,
 117 // forcing the cursor back to the center of the view after each mouse move
 118 // doesn't work well. It reduces the frequency of useful mouse move messages
 119 // significantly. Therefore, we move the cursor to the center of the view only
 120 // if it approaches the border. |kMouseLockBorderPercentage| specifies the width
 121 // of the border area, in percentage of the corresponding dimension.
 122 const int kMouseLockBorderPercentage = 15;
 123
 124 // When accelerated compositing is enabled and a widget resize is pending,
 125 // we delay further resizes of the UI. The following constant is the maximum
 126 // length of time that we should delay further UI resizes while waiting for a
 127 // resized frame from a renderer.
 128 const int kResizeLockTimeoutMs = 67;
 129
 130 #if defined(OS_WIN)
 131 // Used to associate a plugin HWND with its RenderWidgetHostViewAura instance.
 132 const wchar_t kWidgetOwnerProperty[] = L"RenderWidgetHostViewAuraOwner";
 133
 134 BOOL CALLBACK WindowDestroyingCallback(HWND window, LPARAM param) {
 135   RenderWidgetHostViewAura* widget =
 136       reinterpret_cast<RenderWidgetHostViewAura*>(param);
 137   if (GetProp(window, kWidgetOwnerProperty) == widget) {
 138     // Properties set on HWNDs must be removed to avoid leaks.
 139     RemoveProp(window, kWidgetOwnerProperty);
 140     RenderWidgetHostViewBase::DetachPluginWindowsCallback(window);
 141   }
 142   return TRUE;
 143 }
 144
 145 BOOL CALLBACK HideWindowsCallback(HWND window, LPARAM param) {
 146   RenderWidgetHostViewAura* widget =
 147       reinterpret_cast<RenderWidgetHostViewAura*>(param);
 148   if (GetProp(window, kWidgetOwnerProperty) == widget)
 149     SetParent(window, ui::GetHiddenWindow());
 150   return TRUE;
 151 }
 152
 153 BOOL CALLBACK ShowWindowsCallback(HWND window, LPARAM param) {
 154   RenderWidgetHostViewAura* widget =
 155       reinterpret_cast<RenderWidgetHostViewAura*>(param);
 156
 157   if (GetProp(window, kWidgetOwnerProperty) == widget &&
 158       widget->GetNativeView()->GetHost()) {
 159     HWND parent = widget->GetNativeView()->GetHost()->GetAcceleratedWidget();
 160     SetParent(window, parent);
 161   }
 162   return TRUE;
 163 }
 164
 165 struct CutoutRectsParams {
 166   RenderWidgetHostViewAura* widget;
 167   std::vector<gfx::Rect> cutout_rects;
 168   std::map<HWND, WebPluginGeometry>* geometry;
 169 };
 170
 171 // Used to update the region for the windowed plugin to draw in. We start with
 172 // the clip rect from the renderer, then remove the cutout rects from the
 173 // renderer, and then remove the transient windows from the root window and the
 174 // constrained windows from the parent window.
 175 BOOL CALLBACK SetCutoutRectsCallback(HWND window, LPARAM param) {
 176   CutoutRectsParams* params = reinterpret_cast<CutoutRectsParams*>(param);
 177
 178   if (GetProp(window, kWidgetOwnerProperty) == params->widget) {
 179     // First calculate the offset of this plugin from the root window, since
 180     // the cutouts are relative to the root window.
 181     HWND parent =
 182         params->widget->GetNativeView()->GetHost()->GetAcceleratedWidget();
 183     POINT offset;
 184     offset.x = offset.y = 0;
 185     MapWindowPoints(window, parent, &offset, 1);
 186
 187     // Now get the cached clip rect and cutouts for this plugin window that came
 188     // from the renderer.
 189     std::map<HWND, WebPluginGeometry>::iterator i = params->geometry->begin();
 190     while (i != params->geometry->end() &&
 191            i->second.window != window &&
 192            GetParent(i->second.window) != window) {
 193       ++i;
 194     }
 195
 196     if (i == params->geometry->end()) {
 197       NOTREACHED();
 198       return TRUE;
 199     }
 200
 201     HRGN hrgn = CreateRectRgn(i->second.clip_rect.x(),
 202                               i->second.clip_rect.y(),
 203                               i->second.clip_rect.right(),
 204                               i->second.clip_rect.bottom());
 205     // We start with the cutout rects that came from the renderer, then add the
 206     // ones that came from transient and constrained windows.
 207     std::vector<gfx::Rect> cutout_rects = i->second.cutout_rects;
 208     for (size_t i = 0; i < params->cutout_rects.size(); ++i) {
 209       gfx::Rect offset_cutout = params->cutout_rects[i];
 210       offset_cutout.Offset(-offset.x, -offset.y);
 211       cutout_rects.push_back(offset_cutout);
 212     }
 213     gfx::SubtractRectanglesFromRegion(hrgn, cutout_rects);
 214     // If we don't have any cutout rects then no point in messing with the
 215     // window region.
 216     if (cutout_rects.size())
 217       SetWindowRgn(window, hrgn, TRUE);
 218   }
 219   return TRUE;
 220 }
 221
 222 // A callback function for EnumThreadWindows to enumerate and dismiss
 223 // any owned popup windows.
 224 BOOL CALLBACK DismissOwnedPopups(HWND window, LPARAM arg) {
 225   const HWND toplevel_hwnd = reinterpret_cast<HWND>(arg);
 226
 227   if (::IsWindowVisible(window)) {
 228     const HWND owner = ::GetWindow(window, GW_OWNER);
 229     if (toplevel_hwnd == owner) {
 230       ::PostMessage(window, WM_CANCELMODE, 0, 0);
 231     }
 232   }
 233
 234   return TRUE;
 235 }
 236 #endif
 237
 238 // We don't mark these as handled so that they're sent back to the
 239 // DefWindowProc so it can generate WM_APPCOMMAND as necessary.
 240 bool IsXButtonUpEvent(const ui::MouseEvent* event) {
 241 #if defined(OS_WIN)
 242   switch (event->native_event().message) {
 243     case WM_XBUTTONUP:
 244     case WM_NCXBUTTONUP:
 245       return true;
 246   }
 247 #endif
 248   return false;
 249 }
 250
 251 void GetScreenInfoForWindow(WebScreenInfo* results, aura::Window* window) {
 252   const gfx::Display display = window ?
 253       gfx::Screen::GetScreenFor(window)->GetDisplayNearestWindow(window) :
 254       gfx::Screen::GetScreenFor(window)->GetPrimaryDisplay();
 255   results->rect = display.bounds();
 256   results->availableRect = display.work_area();
 257   // TODO(derat|oshima): Don't hardcode this. Get this from display object.
 258   results->depth = 24;
 259   results->depthPerComponent = 8;
 260   results->deviceScaleFactor = display.device_scale_factor();
 261
 262   // The Display rotation and the WebScreenInfo orientation are not the same
 263   // angle. The former is the physical display rotation while the later is the
 264   // rotation required by the content to be shown properly on the screen, in
 265   // other words, relative to the physical display.
 266   results->orientationAngle = display.RotationAsDegree();
 267   if (results->orientationAngle == 90)
 268     results->orientationAngle = 270;
 269   else if (results->orientationAngle == 270)
 270     results->orientationAngle = 90;
 271
 272   results->orientationType =
 273       RenderWidgetHostViewBase::GetOrientationTypeForDesktop(display);
 274 }
 275
 276 bool IsFractionalScaleFactor(float scale_factor) {
 277   return (scale_factor - static_cast<int>(scale_factor)) > 0;
 278 }
 279
 280 // Reset unchanged touch point to StateStationary for touchmove and
 281 // touchcancel.
 282 void MarkUnchangedTouchPointsAsStationary(
 283     blink::WebTouchEvent* event,
 284     int changed_touch_id) {
 285   if (event->type == blink::WebInputEvent::TouchMove ||
 286       event->type == blink::WebInputEvent::TouchCancel) {
 287     for (size_t i = 0; i < event->touchesLength; ++i) {
 288       if (event->touches[i].id != changed_touch_id)
 289         event->touches[i].state = blink::WebTouchPoint::StateStationary;
 290     }
 291   }
 292 }
 293
 294 }  // namespace
 295
 296 // We need to watch for mouse events outside a Web Popup or its parent
 297 // and dismiss the popup for certain events.
 298 class RenderWidgetHostViewAura::EventFilterForPopupExit
 299     : public ui::EventHandler {
 300  public:
 301   explicit EventFilterForPopupExit(RenderWidgetHostViewAura* rwhva)
 302       : rwhva_(rwhva) {
 303     DCHECK(rwhva_);
 304     aura::Env::GetInstance()->AddPreTargetHandler(this);
 305   }
 306
 307   ~EventFilterForPopupExit() override {
 308     aura::Env::GetInstance()->RemovePreTargetHandler(this);
 309   }
 310
 311   // Overridden from ui::EventHandler
 312   void OnMouseEvent(ui::MouseEvent* event) override {
 313     rwhva_->ApplyEventFilterForPopupExit(event);
 314   }
 315
 316   void OnTouchEvent(ui::TouchEvent* event) override {
 317     rwhva_->ApplyEventFilterForPopupExit(event);
 318   }
 319
 320  private:
 321   RenderWidgetHostViewAura* rwhva_;
 322
 323   DISALLOW_COPY_AND_ASSIGN(EventFilterForPopupExit);
 324 };
 325
 326 void RenderWidgetHostViewAura::ApplyEventFilterForPopupExit(
 327     ui::LocatedEvent* event) {
 328   if (in_shutdown_ || is_fullscreen_ || !event->target())
 329     return;
 330
 331   if (event->type() != ui::ET_MOUSE_PRESSED &&
 332       event->type() != ui::ET_TOUCH_PRESSED) {
 333     return;
 334   }
 335
 336   aura::Window* target = static_cast<aura::Window*>(event->target());
 337   if (target != window_ &&
 338       (!popup_parent_host_view_ ||
 339        target != popup_parent_host_view_->window_)) {
 340     // If we enter this code path it means that we did not receive any focus
 341     // lost notifications for the popup window. Ensure that blink is aware
 342     // of the fact that focus was lost for the host window by sending a Blur
 343     // notification.
 344     if (popup_parent_host_view_ && popup_parent_host_view_->host_)
 345       popup_parent_host_view_->host_->Blur();
 346     // Note: popup_parent_host_view_ may be NULL when there are multiple
 347     // popup children per view. See: RenderWidgetHostViewAura::InitAsPopup().
 348     Shutdown();
 349   }
 350 }
 351
 352 // We have to implement the WindowObserver interface on a separate object
 353 // because clang doesn't like implementing multiple interfaces that have
 354 // methods with the same name. This object is owned by the
 355 // RenderWidgetHostViewAura.
 356 class RenderWidgetHostViewAura::WindowObserver : public aura::WindowObserver {
 357  public:
 358   explicit WindowObserver(RenderWidgetHostViewAura* view)
 359       : view_(view) {
 360     view_->window_->AddObserver(this);
 361   }
 362
 363   ~WindowObserver() override { view_->window_->RemoveObserver(this); }
 364
 365   // Overridden from aura::WindowObserver:
 366   void OnWindowAddedToRootWindow(aura::Window* window) override {
 367     if (window == view_->window_)
 368       view_->AddedToRootWindow();
 369   }
 370
 371   void OnWindowRemovingFromRootWindow(aura::Window* window,
 372                                       aura::Window* new_root) override {
 373     if (window == view_->window_)
 374       view_->RemovingFromRootWindow();
 375   }
 376
 377   void OnWindowHierarchyChanged(const HierarchyChangeParams& params) override {
 378     view_->ParentHierarchyChanged();
 379   }
 380
 381  private:
 382   RenderWidgetHostViewAura* view_;
 383
 384   DISALLOW_COPY_AND_ASSIGN(WindowObserver);
 385 };
 386
 387 // This class provides functionality to observe the ancestors of the RWHVA for
 388 // bounds changes. This is done to snap the RWHVA window to a pixel boundary,
 389 // which could change when the bounds relative to the root changes.
 390 // An example where this happens is below:-
 391 // The fast resize code path for bookmarks where in the parent of RWHVA which
 392 // is WCV has its bounds changed before the bookmark is hidden. This results in
 393 // the traditional bounds change notification for the WCV reporting the old
 394 // bounds as the bookmark is still around. Observing all the ancestors of the
 395 // RWHVA window enables us to know when the bounds of the window relative to
 396 // root changes and allows us to snap accordingly.
 397 class RenderWidgetHostViewAura::WindowAncestorObserver
 398     : public aura::WindowObserver {
 399  public:
 400   explicit WindowAncestorObserver(RenderWidgetHostViewAura* view)
 401       : view_(view) {
 402     aura::Window* parent = view_->window_->parent();
 403     while (parent) {
 404       parent->AddObserver(this);
 405       ancestors_.insert(parent);
 406       parent = parent->parent();
 407     }
 408   }
 409
 410   ~WindowAncestorObserver() override {
 411     RemoveAncestorObservers();
 412   }
 413
 414   void OnWindowBoundsChanged(aura::Window* window,
 415                              const gfx::Rect& old_bounds,
 416                              const gfx::Rect& new_bounds) override {
 417     DCHECK(ancestors_.find(window) != ancestors_.end());
 418     if (new_bounds.origin() != old_bounds.origin())
 419       view_->HandleParentBoundsChanged();
 420   }
 421
 422  private:
 423   void RemoveAncestorObservers() {
 424     for (auto ancestor : ancestors_)
 425       ancestor->RemoveObserver(this);
 426     ancestors_.clear();
 427   }
 428
 429   RenderWidgetHostViewAura* view_;
 430   std::set<aura::Window*> ancestors_;
 431
 432   DISALLOW_COPY_AND_ASSIGN(WindowAncestorObserver);
 433 };
 434
 435 ////////////////////////////////////////////////////////////////////////////////
 436 // RenderWidgetHostViewAura, public:
 437
 438 RenderWidgetHostViewAura::RenderWidgetHostViewAura(RenderWidgetHost* host,
 439                                                    bool is_guest_view_hack)
 440     : host_(RenderWidgetHostImpl::From(host)),
 441       window_(new aura::Window(this)),
 442       delegated_frame_host_(new DelegatedFrameHost(this)),
 443       in_shutdown_(false),
 444       in_bounds_changed_(false),
 445       is_fullscreen_(false),
 446       popup_parent_host_view_(NULL),
 447       popup_child_host_view_(NULL),
 448       is_loading_(false),
 449       text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
 450       text_input_mode_(ui::TEXT_INPUT_MODE_DEFAULT),
 451       text_input_flags_(0),
 452       can_compose_inline_(true),
 453       has_composition_text_(false),
 454       accept_return_character_(false),
 455       last_swapped_software_frame_scale_factor_(1.f),
 456       paint_canvas_(NULL),
 457       synthetic_move_sent_(false),
 458       cursor_visibility_state_in_renderer_(UNKNOWN),
 459 #if defined(OS_WIN)
 460       legacy_render_widget_host_HWND_(NULL),
 461       legacy_window_destroyed_(false),
 462       showing_context_menu_(false),
 463 #endif
 464       has_snapped_to_boundary_(false),
 465       touch_editing_client_(NULL),
 466       is_guest_view_hack_(is_guest_view_hack),
 467       begin_frame_observer_proxy_(this),
 468       weak_ptr_factory_(this) {
 469   if (!is_guest_view_hack_)
 470     host_->SetView(this);
 471
 472   window_observer_.reset(new WindowObserver(this));
 473
 474   aura::client::SetTooltipText(window_, &tooltip_);
 475   aura::client::SetActivationDelegate(window_, this);
 476   aura::client::SetFocusChangeObserver(window_, this);
 477   window_->set_layer_owner_delegate(delegated_frame_host_.get());
 478   gfx::Screen::GetScreenFor(window_)->AddObserver(this);
 479
 480   bool overscroll_enabled = base::CommandLine::ForCurrentProcess()->
 481       GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
 482   SetOverscrollControllerEnabled(overscroll_enabled);
 483 }
 484
 485 ////////////////////////////////////////////////////////////////////////////////
 486 // RenderWidgetHostViewAura, RenderWidgetHostView implementation:
 487
 488 bool RenderWidgetHostViewAura::OnMessageReceived(
 489     const IPC::Message& message) {
 490   bool handled = true;
 491   IPC_BEGIN_MESSAGE_MAP(RenderWidgetHostViewAura, message)
 492     // TODO(kevers): Move to RenderWidgetHostViewImpl and consolidate IPC
 493     // messages for TextInput<State|Type>Changed. Corresponding code in
 494     // RenderWidgetHostViewAndroid should also be moved at the same time.
 495     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputStateChanged,
 496                         OnTextInputStateChanged)
 497     IPC_MESSAGE_HANDLER(ViewHostMsg_SetNeedsBeginFrames,
 498                         OnSetNeedsBeginFrames)
 499     IPC_MESSAGE_UNHANDLED(handled = false)
 500   IPC_END_MESSAGE_MAP()
 501   return handled;
 502 }
 503
 504 void RenderWidgetHostViewAura::InitAsChild(
 505     gfx::NativeView parent_view) {
 506   window_->SetType(ui::wm::WINDOW_TYPE_CONTROL);
 507   window_->Init(ui::LAYER_SOLID_COLOR);
 508   window_->SetName("RenderWidgetHostViewAura");
 509   window_->layer()->SetColor(background_color_);
 510 }
 511
 512 void RenderWidgetHostViewAura::InitAsPopup(
 513     RenderWidgetHostView* parent_host_view,
 514     const gfx::Rect& bounds_in_screen) {
 515   popup_parent_host_view_ =
 516       static_cast<RenderWidgetHostViewAura*>(parent_host_view);
 517
 518   // TransientWindowClient may be NULL during tests.
 519   aura::client::TransientWindowClient* transient_window_client =
 520       aura::client::GetTransientWindowClient();
 521   RenderWidgetHostViewAura* old_child =
 522       popup_parent_host_view_->popup_child_host_view_;
 523   if (old_child) {
 524     // TODO(jhorwich): Allow multiple popup_child_host_view_ per view, or
 525     // similar mechanism to ensure a second popup doesn't cause the first one
 526     // to never get a chance to filter events. See crbug.com/160589.
 527     DCHECK(old_child->popup_parent_host_view_ == popup_parent_host_view_);
 528     if (transient_window_client) {
 529       transient_window_client->RemoveTransientChild(
 530         popup_parent_host_view_->window_, old_child->window_);
 531     }
 532     old_child->popup_parent_host_view_ = NULL;
 533   }
 534   popup_parent_host_view_->popup_child_host_view_ = this;
 535   window_->SetType(ui::wm::WINDOW_TYPE_MENU);
 536   window_->Init(ui::LAYER_SOLID_COLOR);
 537   window_->SetName("RenderWidgetHostViewAura");
 538   window_->layer()->SetColor(background_color_);
 539
 540   // Setting the transient child allows for the popup to get mouse events when
 541   // in a system modal dialog. Do this before calling ParentWindowWithContext
 542   // below so that the transient parent is visible to WindowTreeClient.
 543   // This fixes crbug.com/328593.
 544   if (transient_window_client) {
 545     transient_window_client->AddTransientChild(
 546         popup_parent_host_view_->window_, window_);
 547   }
 548
 549   aura::Window* root = popup_parent_host_view_->window_->GetRootWindow();
 550   aura::client::ParentWindowWithContext(window_, root, bounds_in_screen);
 551
 552   SetBounds(bounds_in_screen);
 553   Show();
 554   if (NeedsMouseCapture())
 555     window_->SetCapture();
 556
 557   event_filter_for_popup_exit_.reset(new EventFilterForPopupExit(this));
 558 }
 559
 560 void RenderWidgetHostViewAura::InitAsFullscreen(
 561     RenderWidgetHostView* reference_host_view) {
 562   is_fullscreen_ = true;
 563   window_->SetType(ui::wm::WINDOW_TYPE_NORMAL);
 564   window_->Init(ui::LAYER_SOLID_COLOR);
 565   window_->SetName("RenderWidgetHostViewAura");
 566   window_->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
 567   window_->layer()->SetColor(background_color_);
 568
 569   aura::Window* parent = NULL;
 570   gfx::Rect bounds;
 571   if (reference_host_view) {
 572     aura::Window* reference_window =
 573         static_cast<RenderWidgetHostViewAura*>(reference_host_view)->window_;
 574     if (reference_window) {
 575       host_tracker_.reset(new aura::WindowTracker);
 576       host_tracker_->Add(reference_window);
 577     }
 578     gfx::Display display = gfx::Screen::GetScreenFor(window_)->
 579         GetDisplayNearestWindow(reference_window);
 580     parent = reference_window->GetRootWindow();
 581     bounds = display.bounds();
 582   }
 583   aura::client::ParentWindowWithContext(window_, parent, bounds);
 584   Show();
 585   Focus();
 586 }
 587
 588 RenderWidgetHost* RenderWidgetHostViewAura::GetRenderWidgetHost() const {
 589   return host_;
 590 }
 591
 592 void RenderWidgetHostViewAura::Show() {
 593   window_->Show();
 594
 595   DCHECK(host_);
 596   if (!host_->is_hidden())
 597     return;
 598
 599   bool has_saved_frame = delegated_frame_host_->HasSavedFrame();
 600   ui::LatencyInfo renderer_latency_info, browser_latency_info;
 601   if (has_saved_frame) {
 602     browser_latency_info.AddLatencyNumber(
 603         ui::TAB_SHOW_COMPONENT, host_->GetLatencyComponentId(), 0);
 604   } else {
 605     renderer_latency_info.AddLatencyNumber(
 606         ui::TAB_SHOW_COMPONENT, host_->GetLatencyComponentId(), 0);
 607   }
 608   host_->WasShown(renderer_latency_info);
 609
 610   aura::Window* root = window_->GetRootWindow();
 611   if (root) {
 612     aura::client::CursorClient* cursor_client =
 613         aura::client::GetCursorClient(root);
 614     if (cursor_client)
 615       NotifyRendererOfCursorVisibilityState(cursor_client->IsCursorVisible());
 616   }
 617
 618   delegated_frame_host_->WasShown(browser_latency_info);
 619
 620 #if defined(OS_WIN)
 621   if (legacy_render_widget_host_HWND_) {
 622     // Reparent the legacy Chrome_RenderWidgetHostHWND window to the parent
 623     // window before reparenting any plugins. This ensures that the plugin
 624     // windows stay on top of the child Zorder in the parent and receive
 625     // mouse events, etc.
 626     legacy_render_widget_host_HWND_->UpdateParent(
 627         GetNativeView()->GetHost()->GetAcceleratedWidget());
 628     legacy_render_widget_host_HWND_->SetBounds(
 629         window_->GetBoundsInRootWindow());
 630   }
 631   LPARAM lparam = reinterpret_cast<LPARAM>(this);
 632   EnumChildWindows(ui::GetHiddenWindow(), ShowWindowsCallback, lparam);
 633
 634   if (legacy_render_widget_host_HWND_)
 635     legacy_render_widget_host_HWND_->Show();
 636 #endif
 637 }
 638
 639 void RenderWidgetHostViewAura::Hide() {
 640   window_->Hide();
 641
 642   if (host_ && !host_->is_hidden()) {
 643     host_->WasHidden();
 644     delegated_frame_host_->WasHidden();
 645
 646 #if defined(OS_WIN)
 647     constrained_rects_.clear();
 648     aura::WindowTreeHost* host = window_->GetHost();
 649     if (host) {
 650       HWND parent = host->GetAcceleratedWidget();
 651       LPARAM lparam = reinterpret_cast<LPARAM>(this);
 652       EnumChildWindows(parent, HideWindowsCallback, lparam);
 653       // We reparent the legacy Chrome_RenderWidgetHostHWND window to the global
 654       // hidden window on the same lines as Windowed plugin windows.
 655       if (legacy_render_widget_host_HWND_)
 656         legacy_render_widget_host_HWND_->UpdateParent(ui::GetHiddenWindow());
 657     }
 658 #endif
 659   }
 660
 661 #if defined(OS_WIN)
 662   if (legacy_render_widget_host_HWND_)
 663     legacy_render_widget_host_HWND_->Hide();
 664 #endif
 665 }
 666
 667 void RenderWidgetHostViewAura::SetSize(const gfx::Size& size) {
 668   // For a SetSize operation, we don't care what coordinate system the origin
 669   // of the window is in, it's only important to make sure that the origin
 670   // remains constant after the operation.
 671   InternalSetBounds(gfx::Rect(window_->bounds().origin(), size));
 672 }
 673
 674 void RenderWidgetHostViewAura::SetBounds(const gfx::Rect& rect) {
 675   gfx::Point relative_origin(rect.origin());
 676
 677   // RenderWidgetHostViewAura::SetBounds() takes screen coordinates, but
 678   // Window::SetBounds() takes parent coordinates, so do the conversion here.
 679   aura::Window* root = window_->GetRootWindow();
 680   if (root) {
 681     aura::client::ScreenPositionClient* screen_position_client =
 682         aura::client::GetScreenPositionClient(root);
 683     if (screen_position_client) {
 684       screen_position_client->ConvertPointFromScreen(
 685           window_->parent(), &relative_origin);
 686     }
 687   }
 688
 689   InternalSetBounds(gfx::Rect(relative_origin, rect.size()));
 690 }
 691
 692 gfx::Vector2dF RenderWidgetHostViewAura::GetLastScrollOffset() const {
 693   return last_scroll_offset_;
 694 }
 695
 696 gfx::NativeView RenderWidgetHostViewAura::GetNativeView() const {
 697   return window_;
 698 }
 699
 700 gfx::NativeViewId RenderWidgetHostViewAura::GetNativeViewId() const {
 701 #if defined(OS_WIN)
 702   aura::WindowTreeHost* host = window_->GetHost();
 703   if (host)
 704     return reinterpret_cast<gfx::NativeViewId>(host->GetAcceleratedWidget());
 705 #endif
 706   return static_cast<gfx::NativeViewId>(NULL);
 707 }
 708
 709 gfx::NativeViewAccessible RenderWidgetHostViewAura::GetNativeViewAccessible() {
 710 #if defined(OS_WIN)
 711   aura::WindowTreeHost* host = window_->GetHost();
 712   if (!host)
 713     return static_cast<gfx::NativeViewAccessible>(NULL);
 714   BrowserAccessibilityManager* manager =
 715       host_->GetOrCreateRootBrowserAccessibilityManager();
 716   if (manager)
 717     return manager->GetRoot()->ToBrowserAccessibilityWin();
 718 #endif
 719
 720   NOTIMPLEMENTED();
 721   return static_cast<gfx::NativeViewAccessible>(NULL);
 722 }
 723
 724 ui::TextInputClient* RenderWidgetHostViewAura::GetTextInputClient() {
 725   return this;
 726 }
 727
 728 void RenderWidgetHostViewAura::OnSetNeedsBeginFrames(bool needs_begin_frames) {
 729   begin_frame_observer_proxy_.SetNeedsBeginFrames(needs_begin_frames);
 730 }
 731
 732 void RenderWidgetHostViewAura::SendBeginFrame(const cc::BeginFrameArgs& args) {
 733   delegated_frame_host_->SetVSyncParameters(args.frame_time, args.interval);
 734   host_->Send(new ViewMsg_BeginFrame(host_->GetRoutingID(), args));
 735 }
 736
 737 void RenderWidgetHostViewAura::SetKeyboardFocus() {
 738 #if defined(OS_WIN)
 739   if (CanFocus()) {
 740     aura::WindowTreeHost* host = window_->GetHost();
 741     if (host)
 742       ::SetFocus(host->GetAcceleratedWidget());
 743   }
 744 #endif
 745 }
 746
 747 RenderFrameHostImpl* RenderWidgetHostViewAura::GetFocusedFrame() {
 748   if (!host_->IsRenderView())
 749     return NULL;
 750   RenderViewHost* rvh = RenderViewHost::From(host_);
 751   FrameTreeNode* focused_frame =
 752       rvh->GetDelegate()->GetFrameTree()->GetFocusedFrame();
 753   if (!focused_frame)
 754     return NULL;
 755
 756   return focused_frame->current_frame_host();
 757 }
 758
 759 bool RenderWidgetHostViewAura::CanRendererHandleEvent(
 760     const ui::MouseEvent* event,
 761     bool mouse_locked,
 762     bool selection_popup) {
 763 #if defined(OS_WIN)
 764   bool showing_context_menu = showing_context_menu_;
 765   showing_context_menu_ = false;
 766 #endif
 767
 768   if (event->type() == ui::ET_MOUSE_CAPTURE_CHANGED)
 769     return false;
 770
 771   if ((mouse_locked || selection_popup) &&
 772       (event->type() == ui::ET_MOUSE_EXITED))
 773     return false;
 774
 775 #if defined(OS_WIN)
 776   // Don't forward the mouse leave message which is received when the context
 777   // menu is displayed by the page. This confuses the page and causes state
 778   // changes.
 779   if (showing_context_menu) {
 780     if (event->type() == ui::ET_MOUSE_EXITED)
 781       return false;
 782   }
 783   // Renderer cannot handle WM_XBUTTON or NC events.
 784   switch (event->native_event().message) {
 785     case WM_XBUTTONDOWN:
 786     case WM_XBUTTONUP:
 787     case WM_XBUTTONDBLCLK:
 788     case WM_NCMOUSELEAVE:
 789     case WM_NCMOUSEMOVE:
 790     case WM_NCLBUTTONDOWN:
 791     case WM_NCLBUTTONUP:
 792     case WM_NCLBUTTONDBLCLK:
 793     case WM_NCRBUTTONDOWN:
 794     case WM_NCRBUTTONUP:
 795     case WM_NCRBUTTONDBLCLK:
 796     case WM_NCMBUTTONDOWN:
 797     case WM_NCMBUTTONUP:
 798     case WM_NCMBUTTONDBLCLK:
 799     case WM_NCXBUTTONDOWN:
 800     case WM_NCXBUTTONUP:
 801     case WM_NCXBUTTONDBLCLK:
 802       return false;
 803     default:
 804       break;
 805   }
 806 #elif defined(USE_X11)
 807   // Renderer only supports standard mouse buttons, so ignore programmable
 808   // buttons.
 809   switch (event->type()) {
 810     case ui::ET_MOUSE_PRESSED:
 811     case ui::ET_MOUSE_RELEASED: {
 812       const int kAllowedButtons = ui::EF_LEFT_MOUSE_BUTTON |
 813                                   ui::EF_MIDDLE_MOUSE_BUTTON |
 814                                   ui::EF_RIGHT_MOUSE_BUTTON;
 815       return (event->flags() & kAllowedButtons) != 0;
 816     }
 817     default:
 818       break;
 819   }
 820 #endif
 821   return true;
 822 }
 823
 824 void RenderWidgetHostViewAura::HandleParentBoundsChanged() {
 825   SnapToPhysicalPixelBoundary();
 826 #if defined(OS_WIN)
 827   if (legacy_render_widget_host_HWND_) {
 828     legacy_render_widget_host_HWND_->SetBounds(
 829         window_->GetBoundsInRootWindow());
 830   }
 831 #endif
 832   if (!in_shutdown_)
 833     host_->SendScreenRects();
 834 }
 835
 836 void RenderWidgetHostViewAura::ParentHierarchyChanged() {
 837   ancestor_window_observer_.reset(new WindowAncestorObserver(this));
 838   // Snap when we receive a hierarchy changed. http://crbug.com/388908.
 839   HandleParentBoundsChanged();
 840 }
 841
 842 void RenderWidgetHostViewAura::MovePluginWindows(
 843     const std::vector<WebPluginGeometry>& plugin_window_moves) {
 844 #if defined(OS_WIN)
 845   // We need to clip the rectangle to the tab's viewport, otherwise we will draw
 846   // over the browser UI.
 847   if (!window_->GetRootWindow()) {
 848     DCHECK(plugin_window_moves.empty());
 849     return;
 850   }
 851   HWND parent = window_->GetHost()->GetAcceleratedWidget();
 852   gfx::Rect view_bounds = window_->GetBoundsInRootWindow();
 853   std::vector<WebPluginGeometry> moves = plugin_window_moves;
 854
 855   gfx::Rect view_port(view_bounds.size());
 856
 857   for (size_t i = 0; i < moves.size(); ++i) {
 858     gfx::Rect clip(moves[i].clip_rect);
 859     gfx::Vector2d view_port_offset(
 860         moves[i].window_rect.OffsetFromOrigin());
 861     clip.Offset(view_port_offset);
 862     clip.Intersect(view_port);
 863     clip.Offset(-view_port_offset);
 864     moves[i].clip_rect = clip;
 865
 866     moves[i].window_rect.Offset(view_bounds.OffsetFromOrigin());
 867
 868     plugin_window_moves_[moves[i].window] = moves[i];
 869
 870     // constrained_rects_ are relative to the root window. We want to convert
 871     // them to be relative to the plugin window.
 872     for (size_t j = 0; j < constrained_rects_.size(); ++j) {
 873       gfx::Rect offset_cutout = constrained_rects_[j];
 874       offset_cutout -= moves[i].window_rect.OffsetFromOrigin();
 875       moves[i].cutout_rects.push_back(offset_cutout);
 876     }
 877   }
 878
 879   MovePluginWindowsHelper(parent, moves);
 880
 881   // Make sure each plugin window (or its wrapper if it exists) has a pointer to
 882   // |this|.
 883   for (size_t i = 0; i < moves.size(); ++i) {
 884     HWND window = moves[i].window;
 885     if (GetParent(window) != parent) {
 886       window = GetParent(window);
 887     }
 888     if (!GetProp(window, kWidgetOwnerProperty))
 889       SetProp(window, kWidgetOwnerProperty, this);
 890   }
 891 #endif  // defined(OS_WIN)
 892 }
 893
 894 void RenderWidgetHostViewAura::Focus() {
 895   // Make sure we have a FocusClient before attempting to Focus(). In some
 896   // situations we may not yet be in a valid Window hierarchy (such as reloading
 897   // after out of memory discarded the tab).
 898   aura::client::FocusClient* client = aura::client::GetFocusClient(window_);
 899   if (client)
 900     window_->Focus();
 901 }
 902
 903 bool RenderWidgetHostViewAura::HasFocus() const {
 904   return window_->HasFocus();
 905 }
 906
 907 bool RenderWidgetHostViewAura::IsSurfaceAvailableForCopy() const {
 908   return delegated_frame_host_->CanCopyToBitmap();
 909 }
 910
 911 bool RenderWidgetHostViewAura::IsShowing() {
 912   return window_->IsVisible();
 913 }
 914
 915 gfx::Rect RenderWidgetHostViewAura::GetViewBounds() const {
 916   return window_->GetBoundsInScreen();
 917 }
 918
 919 void RenderWidgetHostViewAura::SetBackgroundColor(SkColor color) {
 920   RenderWidgetHostViewBase::SetBackgroundColor(color);
 921   bool opaque = GetBackgroundOpaque();
 922   host_->SetBackgroundOpaque(opaque);
 923   window_->layer()->SetFillsBoundsOpaquely(opaque);
 924   window_->layer()->SetColor(color);
 925 }
 926
 927 gfx::Size RenderWidgetHostViewAura::GetVisibleViewportSize() const {
 928   gfx::Rect requested_rect(GetRequestedRendererSize());
 929   requested_rect.Inset(insets_);
 930   return requested_rect.size();
 931 }
 932
 933 void RenderWidgetHostViewAura::SetInsets(const gfx::Insets& insets) {
 934   if (insets != insets_) {
 935     insets_ = insets;
 936     host_->WasResized();
 937   }
 938 }
 939
 940 void RenderWidgetHostViewAura::UpdateCursor(const WebCursor& cursor) {
 941   current_cursor_ = cursor;
 942   const gfx::Display display = gfx::Screen::GetScreenFor(window_)->
 943       GetDisplayNearestWindow(window_);
 944   current_cursor_.SetDisplayInfo(display);
 945   UpdateCursorIfOverSelf();
 946 }
 947
 948 void RenderWidgetHostViewAura::SetIsLoading(bool is_loading) {
 949   is_loading_ = is_loading;
 950   UpdateCursorIfOverSelf();
 951 }
 952
 953 void RenderWidgetHostViewAura::TextInputTypeChanged(
 954     ui::TextInputType type,
 955     ui::TextInputMode input_mode,
 956     bool can_compose_inline,
 957     int flags) {
 958   if (text_input_type_ != type ||
 959       text_input_mode_ != input_mode ||
 960       can_compose_inline_ != can_compose_inline ||
 961       text_input_flags_ != flags) {
 962     text_input_type_ = type;
 963     text_input_mode_ = input_mode;
 964     can_compose_inline_ = can_compose_inline;
 965     text_input_flags_ = flags;
 966     if (GetInputMethod())
 967       GetInputMethod()->OnTextInputTypeChanged(this);
 968     if (touch_editing_client_)
 969       touch_editing_client_->OnTextInputTypeChanged(text_input_type_);
 970   }
 971 }
 972
 973 void RenderWidgetHostViewAura::OnTextInputStateChanged(
 974     const ViewHostMsg_TextInputState_Params& params) {
 975   text_input_flags_ = params.flags;
 976   if (params.show_ime_if_needed && params.type != ui::TEXT_INPUT_TYPE_NONE) {
 977     if (GetInputMethod())
 978       GetInputMethod()->ShowImeIfNeeded();
 979   }
 980 }
 981
 982 void RenderWidgetHostViewAura::ImeCancelComposition() {
 983   if (GetInputMethod())
 984     GetInputMethod()->CancelComposition(this);
 985   has_composition_text_ = false;
 986 }
 987
 988 void RenderWidgetHostViewAura::ImeCompositionRangeChanged(
 989     const gfx::Range& range,
 990     const std::vector<gfx::Rect>& character_bounds) {
 991   composition_character_bounds_ = character_bounds;
 992 }
 993
 994 void RenderWidgetHostViewAura::RenderProcessGone(base::TerminationStatus status,
 995                                                  int error_code) {
 996   UpdateCursorIfOverSelf();
 997   Destroy();
 998 }
 999
1000 void RenderWidgetHostViewAura::Destroy() {
1001   // Beware, this function is not called on all destruction paths. It will
1002   // implicitly end up calling ~RenderWidgetHostViewAura though, so all
1003   // destruction/cleanup code should happen there, not here.
1004   in_shutdown_ = true;
1005   delete window_;
1006 }
1007
1008 void RenderWidgetHostViewAura::SetTooltipText(
1009     const base::string16& tooltip_text) {
1010   tooltip_ = tooltip_text;
1011   aura::Window* root_window = window_->GetRootWindow();
1012   aura::client::TooltipClient* tooltip_client =
1013       aura::client::GetTooltipClient(root_window);
1014   if (tooltip_client) {
1015     tooltip_client->UpdateTooltip(window_);
1016     // Content tooltips should be visible indefinitely.
1017     tooltip_client->SetTooltipShownTimeout(window_, 0);
1018   }
1019 }
1020
1021 void RenderWidgetHostViewAura::SelectionChanged(const base::string16& text,
1022                                                 size_t offset,
1023                                                 const gfx::Range& range) {
1024   RenderWidgetHostViewBase::SelectionChanged(text, offset, range);
1025
1026 #if defined(USE_X11) && !defined(OS_CHROMEOS)
1027   if (text.empty() || range.is_empty())
1028     return;
1029   size_t pos = range.GetMin() - offset;
1030   size_t n = range.length();
1031
1032   DCHECK(pos + n <= text.length()) << "The text can not fully cover range.";
1033   if (pos >= text.length()) {
1034     NOTREACHED() << "The text can not cover range.";
1035     return;
1036   }
1037
1038   // Set the CLIPBOARD_TYPE_SELECTION to the ui::Clipboard.
1039   ui::ScopedClipboardWriter clipboard_writer(ui::CLIPBOARD_TYPE_SELECTION);
1040   clipboard_writer.WriteText(text.substr(pos, n));
1041 #endif  // defined(USE_X11) && !defined(OS_CHROMEOS)
1042 }
1043
1044 gfx::Size RenderWidgetHostViewAura::GetRequestedRendererSize() const {
1045   return delegated_frame_host_->GetRequestedRendererSize();
1046 }
1047
1048 void RenderWidgetHostViewAura::SelectionBoundsChanged(
1049     const ViewHostMsg_SelectionBounds_Params& params) {
1050   ui::SelectionBound anchor_bound, focus_bound;
1051   anchor_bound.SetEdge(params.anchor_rect.origin(),
1052                        params.anchor_rect.bottom_left());
1053   focus_bound.SetEdge(params.focus_rect.origin(),
1054                       params.focus_rect.bottom_left());
1055
1056   if (params.anchor_rect == params.focus_rect) {
1057     anchor_bound.set_type(ui::SelectionBound::CENTER);
1058     focus_bound.set_type(ui::SelectionBound::CENTER);
1059   } else {
1060     // Whether text is LTR at the anchor handle.
1061     bool anchor_LTR = params.anchor_dir == blink::WebTextDirectionLeftToRight;
1062     // Whether text is LTR at the focus handle.
1063     bool focus_LTR = params.focus_dir == blink::WebTextDirectionLeftToRight;
1064
1065     if ((params.is_anchor_first && anchor_LTR) ||
1066         (!params.is_anchor_first && !anchor_LTR)) {
1067       anchor_bound.set_type(ui::SelectionBound::LEFT);
1068     } else {
1069       anchor_bound.set_type(ui::SelectionBound::RIGHT);
1070     }
1071     if ((params.is_anchor_first && focus_LTR) ||
1072         (!params.is_anchor_first && !focus_LTR)) {
1073       focus_bound.set_type(ui::SelectionBound::RIGHT);
1074     } else {
1075       focus_bound.set_type(ui::SelectionBound::LEFT);
1076     }
1077   }
1078
1079   if (anchor_bound == selection_anchor_ && focus_bound == selection_focus_)
1080     return;
1081
1082   selection_anchor_ = anchor_bound;
1083   selection_focus_ = focus_bound;
1084   if (GetInputMethod())
1085     GetInputMethod()->OnCaretBoundsChanged(this);
1086
1087   if (touch_editing_client_) {
1088     touch_editing_client_->OnSelectionOrCursorChanged(
1089         anchor_bound, focus_bound);
1090   }
1091 }
1092
1093 void RenderWidgetHostViewAura::CopyFromCompositingSurface(
1094     const gfx::Rect& src_subrect,
1095     const gfx::Size& dst_size,
1096     ReadbackRequestCallback& callback,
1097     const SkColorType preferred_color_type) {
1098   delegated_frame_host_->CopyFromCompositingSurface(
1099       src_subrect, dst_size, callback, preferred_color_type);
1100 }
1101
1102 void RenderWidgetHostViewAura::CopyFromCompositingSurfaceToVideoFrame(
1103       const gfx::Rect& src_subrect,
1104       const scoped_refptr<media::VideoFrame>& target,
1105       const base::Callback<void(bool)>& callback) {
1106   delegated_frame_host_->CopyFromCompositingSurfaceToVideoFrame(
1107       src_subrect, target, callback);
1108 }
1109
1110 bool RenderWidgetHostViewAura::CanCopyToVideoFrame() const {
1111   return delegated_frame_host_->CanCopyToVideoFrame();
1112 }
1113
1114 bool RenderWidgetHostViewAura::CanSubscribeFrame() const {
1115   return delegated_frame_host_->CanSubscribeFrame();
1116 }
1117
1118 void RenderWidgetHostViewAura::BeginFrameSubscription(
1119     scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) {
1120   delegated_frame_host_->BeginFrameSubscription(subscriber.Pass());
1121 }
1122
1123 void RenderWidgetHostViewAura::EndFrameSubscription() {
1124   delegated_frame_host_->EndFrameSubscription();
1125 }
1126
1127 #if defined(OS_WIN)
1128 bool RenderWidgetHostViewAura::UsesNativeWindowFrame() const {
1129   return (legacy_render_widget_host_HWND_ != NULL);
1130 }
1131
1132 void RenderWidgetHostViewAura::UpdateConstrainedWindowRects(
1133     const std::vector<gfx::Rect>& rects) {
1134   // Check this before setting constrained_rects_, so that next time they're set
1135   // and we have a root window we don't early return.
1136   if (!window_->GetHost())
1137     return;
1138
1139   if (rects == constrained_rects_)
1140     return;
1141
1142   constrained_rects_ = rects;
1143
1144   HWND parent = window_->GetHost()->GetAcceleratedWidget();
1145   CutoutRectsParams params;
1146   params.widget = this;
1147   params.cutout_rects = constrained_rects_;
1148   params.geometry = &plugin_window_moves_;
1149   LPARAM lparam = reinterpret_cast<LPARAM>(&params);
1150   EnumChildWindows(parent, SetCutoutRectsCallback, lparam);
1151 }
1152
1153 void RenderWidgetHostViewAura::UpdateMouseLockRegion() {
1154   // Clip the cursor if chrome is running on regular desktop.
1155   if (gfx::Screen::GetScreenFor(window_) == gfx::Screen::GetNativeScreen()) {
1156     RECT window_rect =
1157         gfx::win::DIPToScreenRect(window_->GetBoundsInScreen()).ToRECT();
1158     ::ClipCursor(&window_rect);
1159   }
1160 }
1161
1162 void RenderWidgetHostViewAura::OnLegacyWindowDestroyed() {
1163   legacy_render_widget_host_HWND_ = NULL;
1164   legacy_window_destroyed_ = true;
1165 }
1166 #endif
1167
1168 void RenderWidgetHostViewAura::OnSwapCompositorFrame(
1169     uint32 output_surface_id,
1170     scoped_ptr<cc::CompositorFrame> frame) {
1171   TRACE_EVENT0("content", "RenderWidgetHostViewAura::OnSwapCompositorFrame");
1172
1173   last_scroll_offset_ = frame->metadata.root_scroll_offset;
1174   if (frame->delegated_frame_data) {
1175     delegated_frame_host_->SwapDelegatedFrame(
1176         output_surface_id,
1177         frame->delegated_frame_data.Pass(),
1178         frame->metadata.device_scale_factor,
1179         frame->metadata.latency_info,
1180         &frame->metadata.satisfies_sequences);
1181     return;
1182   }
1183
1184   if (frame->software_frame_data) {
1185     DLOG(ERROR) << "Unable to use software frame in aura";
1186     bad_message::ReceivedBadMessage(host_->GetProcess(),
1187                                     bad_message::RWHVA_SHARED_MEMORY);
1188     return;
1189   }
1190 }
1191
1192 void RenderWidgetHostViewAura::DidStopFlinging() {
1193   if (touch_editing_client_)
1194     touch_editing_client_->DidStopFlinging();
1195 }
1196
1197 #if defined(OS_WIN)
1198 void RenderWidgetHostViewAura::SetParentNativeViewAccessible(
1199     gfx::NativeViewAccessible accessible_parent) {
1200 }
1201
1202 gfx::NativeViewId RenderWidgetHostViewAura::GetParentForWindowlessPlugin()
1203     const {
1204   if (legacy_render_widget_host_HWND_) {
1205     return reinterpret_cast<gfx::NativeViewId>(
1206         legacy_render_widget_host_HWND_->hwnd());
1207   }
1208   return NULL;
1209 }
1210 #endif
1211
1212 bool RenderWidgetHostViewAura::HasAcceleratedSurface(
1213     const gfx::Size& desired_size) {
1214   // Aura doesn't use GetBackingStore for accelerated pages, so it doesn't
1215   // matter what is returned here as GetBackingStore is the only caller of this
1216   // method. TODO(jbates) implement this if other Aura code needs it.
1217   return false;
1218 }
1219
1220 void RenderWidgetHostViewAura::GetScreenInfo(WebScreenInfo* results) {
1221   GetScreenInfoForWindow(results, window_->GetRootWindow() ? window_ : NULL);
1222 }
1223
1224 gfx::Rect RenderWidgetHostViewAura::GetBoundsInRootWindow() {
1225   aura::Window* top_level = window_->GetToplevelWindow();
1226   gfx::Rect bounds(top_level->GetBoundsInScreen());
1227
1228 #if defined(OS_WIN)
1229   // TODO(zturner,iyengar): This will break when we remove support for NPAPI and
1230   // remove the legacy hwnd, so a better fix will need to be decided when that
1231   // happens.
1232   if (UsesNativeWindowFrame()) {
1233     // aura::Window doesn't take into account non-client area of native windows
1234     // (e.g. HWNDs), so for that case ask Windows directly what the bounds are.
1235     aura::WindowTreeHost* host = top_level->GetHost();
1236     if (!host)
1237       return top_level->GetBoundsInScreen();
1238     RECT window_rect = {0};
1239     HWND hwnd = host->GetAcceleratedWidget();
1240     ::GetWindowRect(hwnd, &window_rect);
1241     bounds = gfx::Rect(window_rect);
1242
1243     // Maximized windows are outdented from the work area by the frame thickness
1244     // even though this "frame" is not painted.  This confuses code (and people)
1245     // that think of a maximized window as corresponding exactly to the work
1246     // area.  Correct for this by subtracting the frame thickness back off.
1247     if (::IsZoomed(hwnd)) {
1248       bounds.Inset(GetSystemMetrics(SM_CXSIZEFRAME),
1249                    GetSystemMetrics(SM_CYSIZEFRAME));
1250
1251       bounds.Inset(GetSystemMetrics(SM_CXPADDEDBORDER),
1252                    GetSystemMetrics(SM_CXPADDEDBORDER));
1253     }
1254   }
1255
1256   bounds = gfx::win::ScreenToDIPRect(bounds);
1257 #endif
1258
1259   return bounds;
1260 }
1261
1262 void RenderWidgetHostViewAura::WheelEventAck(
1263     const blink::WebMouseWheelEvent& event,
1264     InputEventAckState ack_result) {
1265   if (overscroll_controller_) {
1266     overscroll_controller_->ReceivedEventACK(
1267         event, (INPUT_EVENT_ACK_STATE_CONSUMED == ack_result));
1268   }
1269 }
1270
1271 void RenderWidgetHostViewAura::GestureEventAck(
1272     const blink::WebGestureEvent& event,
1273     InputEventAckState ack_result) {
1274   if (touch_editing_client_)
1275     touch_editing_client_->GestureEventAck(event.type);
1276
1277   if (overscroll_controller_) {
1278     overscroll_controller_->ReceivedEventACK(
1279         event, (INPUT_EVENT_ACK_STATE_CONSUMED == ack_result));
1280   }
1281 }
1282
1283 void RenderWidgetHostViewAura::ProcessAckedTouchEvent(
1284     const TouchEventWithLatencyInfo& touch,
1285     InputEventAckState ack_result) {
1286   ScopedVector<ui::TouchEvent> events;
1287   aura::WindowTreeHost* host = window_->GetHost();
1288   // |host| is NULL during tests.
1289   if (!host)
1290     return;
1291
1292   ui::EventResult result = (ack_result == INPUT_EVENT_ACK_STATE_CONSUMED)
1293                                ? ui::ER_HANDLED
1294                                : ui::ER_UNHANDLED;
1295
1296   blink::WebTouchPoint::State required_state;
1297   switch (touch.event.type) {
1298     case blink::WebInputEvent::TouchStart:
1299       required_state = blink::WebTouchPoint::StatePressed;
1300       break;
1301     case blink::WebInputEvent::TouchEnd:
1302       required_state = blink::WebTouchPoint::StateReleased;
1303       break;
1304     case blink::WebInputEvent::TouchMove:
1305       required_state = blink::WebTouchPoint::StateMoved;
1306       break;
1307     case blink::WebInputEvent::TouchCancel:
1308       required_state = blink::WebTouchPoint::StateCancelled;
1309       break;
1310     default:
1311       required_state = blink::WebTouchPoint::StateUndefined;
1312       NOTREACHED();
1313       break;
1314   }
1315
1316   // Only send acks for one changed touch point.
1317   bool sent_ack = false;
1318   for (size_t i = 0; i < touch.event.touchesLength; ++i) {
1319     if (touch.event.touches[i].state == required_state) {
1320       DCHECK(!sent_ack);
1321       host->dispatcher()->ProcessedTouchEvent(touch.event.uniqueTouchEventId,
1322                                               window_, result);
1323       sent_ack = true;
1324     }
1325   }
1326 }
1327
1328 scoped_ptr<SyntheticGestureTarget>
1329 RenderWidgetHostViewAura::CreateSyntheticGestureTarget() {
1330   return scoped_ptr<SyntheticGestureTarget>(
1331       new SyntheticGestureTargetAura(host_));
1332 }
1333
1334 InputEventAckState RenderWidgetHostViewAura::FilterInputEvent(
1335     const blink::WebInputEvent& input_event) {
1336   bool consumed = false;
1337   if (input_event.type == WebInputEvent::GestureFlingStart) {
1338     const WebGestureEvent& gesture_event =
1339         static_cast<const WebGestureEvent&>(input_event);
1340     // Zero-velocity touchpad flings are an Aura-specific signal that the
1341     // touchpad scroll has ended, and should not be forwarded to the renderer.
1342     if (gesture_event.sourceDevice == blink::WebGestureDeviceTouchpad &&
1343         !gesture_event.data.flingStart.velocityX &&
1344         !gesture_event.data.flingStart.velocityY) {
1345       consumed = true;
1346     }
1347   }
1348
1349   if (overscroll_controller_)
1350     consumed |= overscroll_controller_->WillHandleEvent(input_event);
1351
1352   // Touch events should always propagate to the renderer.
1353   if (WebTouchEvent::isTouchEventType(input_event.type))
1354     return INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
1355
1356   // Reporting consumed for a fling suggests that there's now an *active* fling
1357   // that requires both animation and a fling-end notification. However, the
1358   // OverscrollController consumes a fling to stop its propagation; it doesn't
1359   // actually tick a fling animation. Report no consumer to convey this.
1360   if (consumed && input_event.type == blink::WebInputEvent::GestureFlingStart)
1361     return INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
1362
1363   return consumed ? INPUT_EVENT_ACK_STATE_CONSUMED
1364                   : INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
1365 }
1366
1367 BrowserAccessibilityManager*
1368 RenderWidgetHostViewAura::CreateBrowserAccessibilityManager(
1369     BrowserAccessibilityDelegate* delegate) {
1370   BrowserAccessibilityManager* manager = NULL;
1371 #if defined(OS_WIN)
1372   manager = new BrowserAccessibilityManagerWin(
1373       BrowserAccessibilityManagerWin::GetEmptyDocument(), delegate);
1374 #else
1375   manager = BrowserAccessibilityManager::Create(
1376       BrowserAccessibilityManager::GetEmptyDocument(), delegate);
1377 #endif
1378   return manager;
1379 }
1380
1381 gfx::AcceleratedWidget
1382 RenderWidgetHostViewAura::AccessibilityGetAcceleratedWidget() {
1383 #if defined(OS_WIN)
1384   if (legacy_render_widget_host_HWND_)
1385     return legacy_render_widget_host_HWND_->hwnd();
1386 #endif
1387   return gfx::kNullAcceleratedWidget;
1388 }
1389
1390 gfx::NativeViewAccessible
1391 RenderWidgetHostViewAura::AccessibilityGetNativeViewAccessible() {
1392 #if defined(OS_WIN)
1393   if (legacy_render_widget_host_HWND_)
1394     return legacy_render_widget_host_HWND_->window_accessible();
1395 #endif
1396   return NULL;
1397
1398 }
1399
1400 gfx::GLSurfaceHandle RenderWidgetHostViewAura::GetCompositingSurface() {
1401   return ImageTransportFactory::GetInstance()->GetSharedSurfaceHandle();
1402 }
1403
1404 void RenderWidgetHostViewAura::ShowDisambiguationPopup(
1405     const gfx::Rect& rect_pixels,
1406     const SkBitmap& zoomed_bitmap) {
1407   RenderViewHostDelegate* delegate = NULL;
1408   if (host_->IsRenderView())
1409     delegate = RenderViewHost::From(host_)->GetDelegate();
1410   // Suppress the link disambiguation popup if the virtual keyboard is currently
1411   // requested, as it doesn't interact well with the keyboard.
1412   if (delegate && delegate->IsVirtualKeyboardRequested())
1413     return;
1414
1415   // |target_rect| is provided in pixels, not DIPs. So we convert it to DIPs
1416   // by scaling it by the inverse of the device scale factor.
1417   gfx::RectF screen_target_rect_f(rect_pixels);
1418   screen_target_rect_f.Scale(1.0f / current_device_scale_factor_);
1419   disambiguation_target_rect_ = gfx::ToEnclosingRect(screen_target_rect_f);
1420
1421   float scale = static_cast<float>(zoomed_bitmap.width()) /
1422                 static_cast<float>(rect_pixels.width());
1423   gfx::Size zoomed_size(gfx::ToCeiledSize(
1424       gfx::ScaleSize(disambiguation_target_rect_.size(), scale)));
1425
1426   // Save of a copy of the |last_scroll_offset_| for comparison when the copy
1427   // callback fires, to ensure that we haven't scrolled.
1428   disambiguation_scroll_offset_ = last_scroll_offset_;
1429
1430   CopyFromCompositingSurface(
1431       disambiguation_target_rect_,
1432       zoomed_size,
1433       base::Bind(&RenderWidgetHostViewAura::DisambiguationPopupRendered,
1434                  weak_ptr_factory_.GetWeakPtr()),
1435                  kN32_SkColorType);
1436 }
1437
1438 void RenderWidgetHostViewAura::DisambiguationPopupRendered(
1439     const SkBitmap& result,
1440     ReadbackResponse response) {
1441   if ((response != READBACK_SUCCESS) ||
1442       disambiguation_scroll_offset_ != last_scroll_offset_)
1443     return;
1444
1445   // Use RenderViewHostDelegate to get to the WebContentsViewAura, which will
1446   // actually show the disambiguation popup.
1447   RenderViewHostDelegate* delegate = NULL;
1448   if (host_->IsRenderView())
1449     delegate = RenderViewHost::From(host_)->GetDelegate();
1450   RenderViewHostDelegateView* delegate_view = NULL;
1451   if (delegate) {
1452     delegate_view = delegate->GetDelegateView();
1453     if (delegate->IsVirtualKeyboardRequested())
1454       return;
1455   }
1456   if (delegate_view) {
1457     delegate_view->ShowDisambiguationPopup(
1458         disambiguation_target_rect_,
1459         result,
1460         base::Bind(&RenderWidgetHostViewAura::ProcessDisambiguationGesture,
1461                    weak_ptr_factory_.GetWeakPtr()),
1462         base::Bind(&RenderWidgetHostViewAura::ProcessDisambiguationMouse,
1463                    weak_ptr_factory_.GetWeakPtr()));
1464   }
1465 }
1466
1467 void RenderWidgetHostViewAura::HideDisambiguationPopup() {
1468   RenderViewHostDelegate* delegate = NULL;
1469   if (host_->IsRenderView())
1470     delegate = RenderViewHost::From(host_)->GetDelegate();
1471   RenderViewHostDelegateView* delegate_view = NULL;
1472   if (delegate)
1473     delegate_view = delegate->GetDelegateView();
1474   if (delegate_view)
1475     delegate_view->HideDisambiguationPopup();
1476 }
1477
1478 void RenderWidgetHostViewAura::ProcessDisambiguationGesture(
1479     ui::GestureEvent* event) {
1480   blink::WebGestureEvent web_gesture = content::MakeWebGestureEvent(*event);
1481   // If we fail to make a WebGestureEvent that is a Tap from the provided event,
1482   // don't forward it to Blink.
1483   if (web_gesture.type < blink::WebInputEvent::Type::GestureTap ||
1484       web_gesture.type > blink::WebInputEvent::Type::GestureTapCancel)
1485     return;
1486
1487   host_->ForwardGestureEvent(web_gesture);
1488 }
1489
1490 void RenderWidgetHostViewAura::ProcessDisambiguationMouse(
1491     ui::MouseEvent* event) {
1492   blink::WebMouseEvent web_mouse = content::MakeWebMouseEvent(*event);
1493   host_->ForwardMouseEvent(web_mouse);
1494 }
1495
1496 bool RenderWidgetHostViewAura::LockMouse() {
1497   aura::Window* root_window = window_->GetRootWindow();
1498   if (!root_window)
1499     return false;
1500
1501   if (mouse_locked_)
1502     return true;
1503
1504   mouse_locked_ = true;
1505 #if !defined(OS_WIN)
1506   window_->SetCapture();
1507 #else
1508   UpdateMouseLockRegion();
1509 #endif
1510   aura::client::CursorClient* cursor_client =
1511       aura::client::GetCursorClient(root_window);
1512   if (cursor_client) {
1513     cursor_client->HideCursor();
1514     cursor_client->LockCursor();
1515   }
1516
1517   if (ShouldMoveToCenter()) {
1518     synthetic_move_sent_ = true;
1519     window_->MoveCursorTo(gfx::Rect(window_->bounds().size()).CenterPoint());
1520   }
1521   tooltip_disabler_.reset(new aura::client::ScopedTooltipDisabler(root_window));
1522   return true;
1523 }
1524
1525 void RenderWidgetHostViewAura::UnlockMouse() {
1526   tooltip_disabler_.reset();
1527
1528   aura::Window* root_window = window_->GetRootWindow();
1529   if (!mouse_locked_ || !root_window)
1530     return;
1531
1532   mouse_locked_ = false;
1533
1534 #if !defined(OS_WIN)
1535   window_->ReleaseCapture();
1536 #else
1537   ::ClipCursor(NULL);
1538 #endif
1539   window_->MoveCursorTo(unlocked_mouse_position_);
1540   aura::client::CursorClient* cursor_client =
1541       aura::client::GetCursorClient(root_window);
1542   if (cursor_client) {
1543     cursor_client->UnlockCursor();
1544     cursor_client->ShowCursor();
1545   }
1546
1547   host_->LostMouseLock();
1548 }
1549
1550 ////////////////////////////////////////////////////////////////////////////////
1551 // RenderWidgetHostViewAura, ui::TextInputClient implementation:
1552 void RenderWidgetHostViewAura::SetCompositionText(
1553     const ui::CompositionText& composition) {
1554   if (!host_)
1555     return;
1556
1557   // TODO(suzhe): convert both renderer_host and renderer to use
1558   // ui::CompositionText.
1559   std::vector<blink::WebCompositionUnderline> underlines;
1560   underlines.reserve(composition.underlines.size());
1561   for (std::vector<ui::CompositionUnderline>::const_iterator it =
1562            composition.underlines.begin();
1563        it != composition.underlines.end(); ++it) {
1564     underlines.push_back(
1565         blink::WebCompositionUnderline(static_cast<unsigned>(it->start_offset),
1566                                        static_cast<unsigned>(it->end_offset),
1567                                        it->color,
1568                                        it->thick,
1569                                        it->background_color));
1570   }
1571
1572   // TODO(suzhe): due to a bug of webkit, we can't use selection range with
1573   // composition string. See: https://bugs.webkit.org/show_bug.cgi?id=37788
1574   host_->ImeSetComposition(composition.text, underlines,
1575                            composition.selection.end(),
1576                            composition.selection.end());
1577
1578   has_composition_text_ = !composition.text.empty();
1579 }
1580
1581 void RenderWidgetHostViewAura::ConfirmCompositionText() {
1582   if (host_ && has_composition_text_) {
1583     host_->ImeConfirmComposition(base::string16(), gfx::Range::InvalidRange(),
1584                                  false);
1585   }
1586   has_composition_text_ = false;
1587 }
1588
1589 void RenderWidgetHostViewAura::ClearCompositionText() {
1590   if (host_ && has_composition_text_)
1591     host_->ImeCancelComposition();
1592   has_composition_text_ = false;
1593 }
1594
1595 void RenderWidgetHostViewAura::InsertText(const base::string16& text) {
1596   DCHECK(text_input_type_ != ui::TEXT_INPUT_TYPE_NONE);
1597   if (host_)
1598     host_->ImeConfirmComposition(text, gfx::Range::InvalidRange(), false);
1599   has_composition_text_ = false;
1600 }
1601
1602 void RenderWidgetHostViewAura::InsertChar(base::char16 ch, int flags) {
1603   if (popup_child_host_view_ && popup_child_host_view_->NeedsInputGrab()) {
1604     popup_child_host_view_->InsertChar(ch, flags);
1605     return;
1606   }
1607
1608   // Ignore character messages for VKEY_RETURN sent on CTRL+M. crbug.com/315547
1609   if (host_ && (accept_return_character_ || ch != ui::VKEY_RETURN)) {
1610     double now = ui::EventTimeForNow().InSecondsF();
1611     // Send a blink::WebInputEvent::Char event to |host_|.
1612     NativeWebKeyboardEvent webkit_event(ui::ET_KEY_PRESSED,
1613                                         true /* is_char */,
1614                                         ch,
1615                                         flags,
1616                                         now);
1617     ForwardKeyboardEvent(webkit_event);
1618   }
1619 }
1620
1621 ui::TextInputType RenderWidgetHostViewAura::GetTextInputType() const {
1622   return text_input_type_;
1623 }
1624
1625 ui::TextInputMode RenderWidgetHostViewAura::GetTextInputMode() const {
1626   return text_input_mode_;
1627 }
1628
1629 int RenderWidgetHostViewAura::GetTextInputFlags() const {
1630   return text_input_flags_;
1631 }
1632
1633 bool RenderWidgetHostViewAura::CanComposeInline() const {
1634   return can_compose_inline_;
1635 }
1636
1637 gfx::Rect RenderWidgetHostViewAura::ConvertRectToScreen(
1638     const gfx::Rect& rect) const {
1639   gfx::Point origin = rect.origin();
1640   gfx::Point end = gfx::Point(rect.right(), rect.bottom());
1641
1642   aura::Window* root_window = window_->GetRootWindow();
1643   if (!root_window)
1644     return rect;
1645   aura::client::ScreenPositionClient* screen_position_client =
1646       aura::client::GetScreenPositionClient(root_window);
1647   if (!screen_position_client)
1648     return rect;
1649   screen_position_client->ConvertPointToScreen(window_, &origin);
1650   screen_position_client->ConvertPointToScreen(window_, &end);
1651   return gfx::Rect(origin.x(),
1652                    origin.y(),
1653                    end.x() - origin.x(),
1654                    end.y() - origin.y());
1655 }
1656
1657 gfx::Rect RenderWidgetHostViewAura::ConvertRectFromScreen(
1658     const gfx::Rect& rect) const {
1659   gfx::Point origin = rect.origin();
1660   gfx::Point end = gfx::Point(rect.right(), rect.bottom());
1661
1662   aura::Window* root_window = window_->GetRootWindow();
1663   if (root_window) {
1664     aura::client::ScreenPositionClient* screen_position_client =
1665         aura::client::GetScreenPositionClient(root_window);
1666     screen_position_client->ConvertPointFromScreen(window_, &origin);
1667     screen_position_client->ConvertPointFromScreen(window_, &end);
1668     return gfx::Rect(origin.x(),
1669                      origin.y(),
1670                      end.x() - origin.x(),
1671                      end.y() - origin.y());
1672   }
1673
1674   return rect;
1675 }
1676
1677 gfx::Rect RenderWidgetHostViewAura::GetCaretBounds() const {
1678   gfx::Rect rect =
1679       ui::RectBetweenSelectionBounds(selection_anchor_, selection_focus_);
1680   return ConvertRectToScreen(rect);
1681 }
1682
1683 bool RenderWidgetHostViewAura::GetCompositionCharacterBounds(
1684     uint32 index,
1685     gfx::Rect* rect) const {
1686   DCHECK(rect);
1687   if (index >= composition_character_bounds_.size())
1688     return false;
1689   *rect = ConvertRectToScreen(composition_character_bounds_[index]);
1690   return true;
1691 }
1692
1693 bool RenderWidgetHostViewAura::HasCompositionText() const {
1694   return has_composition_text_;
1695 }
1696
1697 bool RenderWidgetHostViewAura::GetTextRange(gfx::Range* range) const {
1698   range->set_start(selection_text_offset_);
1699   range->set_end(selection_text_offset_ + selection_text_.length());
1700   return true;
1701 }
1702
1703 bool RenderWidgetHostViewAura::GetCompositionTextRange(
1704     gfx::Range* range) const {
1705   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
1706   NOTIMPLEMENTED();
1707   return false;
1708 }
1709
1710 bool RenderWidgetHostViewAura::GetSelectionRange(gfx::Range* range) const {
1711   range->set_start(selection_range_.start());
1712   range->set_end(selection_range_.end());
1713   return true;
1714 }
1715
1716 bool RenderWidgetHostViewAura::SetSelectionRange(const gfx::Range& range) {
1717   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
1718   NOTIMPLEMENTED();
1719   return false;
1720 }
1721
1722 bool RenderWidgetHostViewAura::DeleteRange(const gfx::Range& range) {
1723   // TODO(suzhe): implement this method when fixing http://crbug.com/55130.
1724   NOTIMPLEMENTED();
1725   return false;
1726 }
1727
1728 bool RenderWidgetHostViewAura::GetTextFromRange(
1729     const gfx::Range& range,
1730     base::string16* text) const {
1731   gfx::Range selection_text_range(selection_text_offset_,
1732       selection_text_offset_ + selection_text_.length());
1733
1734   if (!selection_text_range.Contains(range)) {
1735     text->clear();
1736     return false;
1737   }
1738   if (selection_text_range.EqualsIgnoringDirection(range)) {
1739     // Avoid calling substr whose performance is low.
1740     *text = selection_text_;
1741   } else {
1742     *text = selection_text_.substr(
1743         range.GetMin() - selection_text_offset_,
1744         range.length());
1745   }
1746   return true;
1747 }
1748
1749 void RenderWidgetHostViewAura::OnInputMethodChanged() {
1750   if (!host_)
1751     return;
1752
1753   // TODO(suzhe): implement the newly added “locale” property of HTML DOM
1754   // TextEvent.
1755 }
1756
1757 bool RenderWidgetHostViewAura::ChangeTextDirectionAndLayoutAlignment(
1758       base::i18n::TextDirection direction) {
1759   if (!host_)
1760     return false;
1761   host_->UpdateTextDirection(
1762       direction == base::i18n::RIGHT_TO_LEFT ?
1763       blink::WebTextDirectionRightToLeft :
1764       blink::WebTextDirectionLeftToRight);
1765   host_->NotifyTextDirection();
1766   return true;
1767 }
1768
1769 void RenderWidgetHostViewAura::ExtendSelectionAndDelete(
1770     size_t before, size_t after) {
1771   RenderFrameHostImpl* rfh = GetFocusedFrame();
1772   if (rfh)
1773     rfh->ExtendSelectionAndDelete(before, after);
1774 }
1775
1776 void RenderWidgetHostViewAura::EnsureCaretInRect(const gfx::Rect& rect) {
1777   gfx::Rect intersected_rect(
1778       gfx::IntersectRects(rect, window_->GetBoundsInScreen()));
1779
1780   if (intersected_rect.IsEmpty())
1781     return;
1782
1783   host_->ScrollFocusedEditableNodeIntoRect(
1784       ConvertRectFromScreen(intersected_rect));
1785 }
1786
1787 bool RenderWidgetHostViewAura::IsEditCommandEnabled(int command_id) {
1788   return false;
1789 }
1790
1791 void RenderWidgetHostViewAura::SetEditCommandForNextKeyEvent(int command_id) {
1792 }
1793
1794 ////////////////////////////////////////////////////////////////////////////////
1795 // RenderWidgetHostViewAura, gfx::DisplayObserver implementation:
1796
1797 void RenderWidgetHostViewAura::OnDisplayAdded(
1798     const gfx::Display& new_display) {
1799 }
1800
1801 void RenderWidgetHostViewAura::OnDisplayRemoved(
1802     const gfx::Display& old_display) {
1803 }
1804
1805 void RenderWidgetHostViewAura::OnDisplayMetricsChanged(
1806     const gfx::Display& display, uint32_t metrics) {
1807   // The screen info should be updated regardless of the metric change.
1808   gfx::Screen* screen = gfx::Screen::GetScreenFor(window_);
1809   if (display.id() == screen->GetDisplayNearestWindow(window_).id()) {
1810     UpdateScreenInfo(window_);
1811     current_cursor_.SetDisplayInfo(display);
1812     UpdateCursorIfOverSelf();
1813   }
1814 }
1815
1816 ////////////////////////////////////////////////////////////////////////////////
1817 // RenderWidgetHostViewAura, aura::WindowDelegate implementation:
1818
1819 gfx::Size RenderWidgetHostViewAura::GetMinimumSize() const {
1820   return gfx::Size();
1821 }
1822
1823 gfx::Size RenderWidgetHostViewAura::GetMaximumSize() const {
1824   return gfx::Size();
1825 }
1826
1827 void RenderWidgetHostViewAura::OnBoundsChanged(const gfx::Rect& old_bounds,
1828                                                const gfx::Rect& new_bounds) {
1829   base::AutoReset<bool> in_bounds_changed(&in_bounds_changed_, true);
1830   // We care about this whenever RenderWidgetHostViewAura is not owned by a
1831   // WebContentsViewAura since changes to the Window's bounds need to be
1832   // messaged to the renderer.  WebContentsViewAura invokes SetSize() or
1833   // SetBounds() itself.  No matter how we got here, any redundant calls are
1834   // harmless.
1835   SetSize(new_bounds.size());
1836
1837   if (GetInputMethod())
1838     GetInputMethod()->OnCaretBoundsChanged(this);
1839 }
1840
1841 gfx::NativeCursor RenderWidgetHostViewAura::GetCursor(const gfx::Point& point) {
1842   if (mouse_locked_)
1843     return ui::kCursorNone;
1844   return current_cursor_.GetNativeCursor();
1845 }
1846
1847 int RenderWidgetHostViewAura::GetNonClientComponent(
1848     const gfx::Point& point) const {
1849   return HTCLIENT;
1850 }
1851
1852 bool RenderWidgetHostViewAura::ShouldDescendIntoChildForEventHandling(
1853     aura::Window* child,
1854     const gfx::Point& location) {
1855   return true;
1856 }
1857
1858 bool RenderWidgetHostViewAura::CanFocus() {
1859   return popup_type_ == blink::WebPopupTypeNone;
1860 }
1861
1862 void RenderWidgetHostViewAura::OnCaptureLost() {
1863   host_->LostCapture();
1864   if (touch_editing_client_)
1865     touch_editing_client_->EndTouchEditing(false);
1866 }
1867
1868 void RenderWidgetHostViewAura::OnPaint(const ui::PaintContext& context) {
1869   NOTREACHED();
1870 }
1871
1872 void RenderWidgetHostViewAura::OnDeviceScaleFactorChanged(
1873     float device_scale_factor) {
1874   if (!host_ || !window_->GetRootWindow())
1875     return;
1876
1877   UpdateScreenInfo(window_);
1878
1879   const gfx::Display display = gfx::Screen::GetScreenFor(window_)->
1880       GetDisplayNearestWindow(window_);
1881   DCHECK_EQ(device_scale_factor, display.device_scale_factor());
1882   current_cursor_.SetDisplayInfo(display);
1883   SnapToPhysicalPixelBoundary();
1884 }
1885
1886 void RenderWidgetHostViewAura::OnWindowDestroying(aura::Window* window) {
1887 #if defined(OS_WIN)
1888   HWND parent = NULL;
1889   // If the tab was hidden and it's closed, host_->is_hidden would have been
1890   // reset to false in RenderWidgetHostImpl::RendererExited.
1891   if (!window_->GetRootWindow() || host_->is_hidden()) {
1892     parent = ui::GetHiddenWindow();
1893   } else {
1894     parent = window_->GetHost()->GetAcceleratedWidget();
1895   }
1896   LPARAM lparam = reinterpret_cast<LPARAM>(this);
1897   EnumChildWindows(parent, WindowDestroyingCallback, lparam);
1898
1899   // The LegacyRenderWidgetHostHWND instance is destroyed when its window is
1900   // destroyed. Normally we control when that happens via the Destroy call
1901   // in the dtor. However there may be cases where the window is destroyed
1902   // by Windows, i.e. the parent window is destroyed before the
1903   // RenderWidgetHostViewAura instance goes away etc. To avoid that we
1904   // destroy the LegacyRenderWidgetHostHWND instance here.
1905   if (legacy_render_widget_host_HWND_) {
1906     legacy_render_widget_host_HWND_->set_host(NULL);
1907     legacy_render_widget_host_HWND_->Destroy();
1908     // The Destroy call above will delete the LegacyRenderWidgetHostHWND
1909     // instance.
1910     legacy_render_widget_host_HWND_ = NULL;
1911   }
1912 #endif
1913
1914   // Make sure that the input method no longer references to this object before
1915   // this object is removed from the root window (i.e. this object loses access
1916   // to the input method).
1917   ui::InputMethod* input_method = GetInputMethod();
1918   if (input_method)
1919     input_method->DetachTextInputClient(this);
1920
1921   if (overscroll_controller_)
1922     overscroll_controller_->Reset();
1923 }
1924
1925 void RenderWidgetHostViewAura::OnWindowDestroyed(aura::Window* window) {
1926   // Ask the RWH to drop reference to us.
1927   if (!is_guest_view_hack_)
1928     host_->ViewDestroyed();
1929
1930   delete this;
1931 }
1932
1933 void RenderWidgetHostViewAura::OnWindowTargetVisibilityChanged(bool visible) {
1934 }
1935
1936 bool RenderWidgetHostViewAura::HasHitTestMask() const {
1937   return false;
1938 }
1939
1940 void RenderWidgetHostViewAura::GetHitTestMask(gfx::Path* mask) const {
1941 }
1942
1943 ////////////////////////////////////////////////////////////////////////////////
1944 // RenderWidgetHostViewAura, ui::EventHandler implementation:
1945
1946 void RenderWidgetHostViewAura::OnKeyEvent(ui::KeyEvent* event) {
1947   TRACE_EVENT0("input", "RenderWidgetHostViewAura::OnKeyEvent");
1948   if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
1949     return;
1950
1951   if (popup_child_host_view_ && popup_child_host_view_->NeedsInputGrab()) {
1952     popup_child_host_view_->OnKeyEvent(event);
1953     if (event->handled())
1954       return;
1955   }
1956
1957   // We need to handle the Escape key for Pepper Flash.
1958   if (is_fullscreen_ && event->key_code() == ui::VKEY_ESCAPE) {
1959     // Focus the window we were created from.
1960     if (host_tracker_.get() && !host_tracker_->windows().empty()) {
1961       aura::Window* host = *(host_tracker_->windows().begin());
1962       aura::client::FocusClient* client = aura::client::GetFocusClient(host);
1963       if (client) {
1964         // Calling host->Focus() may delete |this|. We create a local observer
1965         // for that. In that case we exit without further access to any members.
1966         aura::WindowTracker tracker;
1967         aura::Window* window = window_;
1968         tracker.Add(window);
1969         host->Focus();
1970         if (!tracker.Contains(window)) {
1971           event->SetHandled();
1972           return;
1973         }
1974       }
1975     }
1976     Shutdown();
1977   } else {
1978     if (event->key_code() == ui::VKEY_RETURN) {
1979       // Do not forward return key release events if no press event was handled.
1980       if (event->type() == ui::ET_KEY_RELEASED && !accept_return_character_)
1981         return;
1982       // Accept return key character events between press and release events.
1983       accept_return_character_ = event->type() == ui::ET_KEY_PRESSED;
1984     }
1985
1986     // We don't have to communicate with an input method here.
1987     NativeWebKeyboardEvent webkit_event(*event);
1988     ForwardKeyboardEvent(webkit_event);
1989   }
1990   event->SetHandled();
1991 }
1992
1993 void RenderWidgetHostViewAura::OnMouseEvent(ui::MouseEvent* event) {
1994   TRACE_EVENT0("input", "RenderWidgetHostViewAura::OnMouseEvent");
1995
1996   if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
1997     return;
1998
1999   if (mouse_locked_) {
2000     aura::client::CursorClient* cursor_client =
2001         aura::client::GetCursorClient(window_->GetRootWindow());
2002     DCHECK(!cursor_client || !cursor_client->IsCursorVisible());
2003
2004     if (event->type() == ui::ET_MOUSEWHEEL) {
2005       blink::WebMouseWheelEvent mouse_wheel_event =
2006           MakeWebMouseWheelEvent(static_cast<ui::MouseWheelEvent&>(*event));
2007       if (mouse_wheel_event.deltaX != 0 || mouse_wheel_event.deltaY != 0)
2008         host_->ForwardWheelEvent(mouse_wheel_event);
2009       return;
2010     }
2011
2012     gfx::Point center(gfx::Rect(window_->bounds().size()).CenterPoint());
2013
2014     // If we receive non client mouse messages while we are in the locked state
2015     // it probably means that the mouse left the borders of our window and
2016     // needs to be moved back to the center.
2017     if (event->flags() & ui::EF_IS_NON_CLIENT) {
2018       synthetic_move_sent_ = true;
2019       window_->MoveCursorTo(center);
2020       return;
2021     }
2022
2023     blink::WebMouseEvent mouse_event = MakeWebMouseEvent(*event);
2024
2025     bool is_move_to_center_event = (event->type() == ui::ET_MOUSE_MOVED ||
2026         event->type() == ui::ET_MOUSE_DRAGGED) &&
2027         mouse_event.x == center.x() && mouse_event.y == center.y();
2028
2029     // For fractional scale factors, the conversion from pixels to dip and
2030     // vice versa could result in off by 1 or 2 errors which hurts us because
2031     // we want to avoid sending the artificial move to center event to the
2032     // renderer. Sending the move to center to the renderer cause the cursor
2033     // to bounce around the center of the screen leading to the lock operation
2034     // not working correctly.
2035     // Workaround is to treat a mouse move or drag event off by at most 2 px
2036     // from the center as a move to center event.
2037     if (synthetic_move_sent_ &&
2038         IsFractionalScaleFactor(current_device_scale_factor_)) {
2039       if (event->type() == ui::ET_MOUSE_MOVED ||
2040           event->type() == ui::ET_MOUSE_DRAGGED) {
2041         if ((abs(mouse_event.x - center.x()) <= 2) &&
2042             (abs(mouse_event.y - center.y()) <= 2)) {
2043           is_move_to_center_event = true;
2044         }
2045       }
2046     }
2047
2048     ModifyEventMovementAndCoords(&mouse_event);
2049
2050     bool should_not_forward = is_move_to_center_event && synthetic_move_sent_;
2051     if (should_not_forward) {
2052       synthetic_move_sent_ = false;
2053     } else {
2054       // Check if the mouse has reached the border and needs to be centered.
2055       if (ShouldMoveToCenter()) {
2056         synthetic_move_sent_ = true;
2057         window_->MoveCursorTo(center);
2058       }
2059       bool is_selection_popup = popup_child_host_view_ &&
2060           popup_child_host_view_->NeedsInputGrab();
2061       // Forward event to renderer.
2062       if (CanRendererHandleEvent(event, mouse_locked_, is_selection_popup) &&
2063           !(event->flags() & ui::EF_FROM_TOUCH)) {
2064         host_->ForwardMouseEvent(mouse_event);
2065         // Ensure that we get keyboard focus on mouse down as a plugin window
2066         // may have grabbed keyboard focus.
2067         if (event->type() == ui::ET_MOUSE_PRESSED)
2068           SetKeyboardFocus();
2069       }
2070     }
2071     return;
2072   }
2073
2074   // As the overscroll is handled during scroll events from the trackpad, the
2075   // RWHVA window is transformed by the overscroll controller. This transform
2076   // triggers a synthetic mouse-move event to be generated (by the aura
2077   // RootWindow). But this event interferes with the overscroll gesture. So,
2078   // ignore such synthetic mouse-move events if an overscroll gesture is in
2079   // progress.
2080   if (overscroll_controller_ &&
2081       overscroll_controller_->overscroll_mode() != OVERSCROLL_NONE &&
2082       event->flags() & ui::EF_IS_SYNTHESIZED &&
2083       (event->type() == ui::ET_MOUSE_ENTERED ||
2084        event->type() == ui::ET_MOUSE_EXITED ||
2085        event->type() == ui::ET_MOUSE_MOVED)) {
2086     event->StopPropagation();
2087     return;
2088   }
2089
2090   if (event->type() == ui::ET_MOUSEWHEEL) {
2091 #if defined(OS_WIN)
2092     // We get mouse wheel/scroll messages even if we are not in the foreground.
2093     // So here we check if we have any owned popup windows in the foreground and
2094     // dismiss them.
2095     aura::WindowTreeHost* host = window_->GetHost();
2096     if (host) {
2097       HWND parent = host->GetAcceleratedWidget();
2098       HWND toplevel_hwnd = ::GetAncestor(parent, GA_ROOT);
2099       EnumThreadWindows(GetCurrentThreadId(),
2100                         DismissOwnedPopups,
2101                         reinterpret_cast<LPARAM>(toplevel_hwnd));
2102     }
2103 #endif
2104     // The Disambiguation popup does not parent itself from this window, so we
2105     // manually dismiss it.
2106     HideDisambiguationPopup();
2107
2108     blink::WebMouseWheelEvent mouse_wheel_event =
2109         MakeWebMouseWheelEvent(static_cast<ui::MouseWheelEvent&>(*event));
2110     if (mouse_wheel_event.deltaX != 0 || mouse_wheel_event.deltaY != 0)
2111       host_->ForwardWheelEvent(mouse_wheel_event);
2112   } else {
2113       bool is_selection_popup = popup_child_host_view_ &&
2114           popup_child_host_view_->NeedsInputGrab();
2115       if (CanRendererHandleEvent(event, mouse_locked_, is_selection_popup) &&
2116           !(event->flags() & ui::EF_FROM_TOUCH)) {
2117       // Confirm existing composition text on mouse press, to make sure
2118       // the input caret won't be moved with an ongoing composition text.
2119       if (event->type() == ui::ET_MOUSE_PRESSED)
2120         FinishImeCompositionSession();
2121
2122       blink::WebMouseEvent mouse_event = MakeWebMouseEvent(*event);
2123       ModifyEventMovementAndCoords(&mouse_event);
2124       host_->ForwardMouseEvent(mouse_event);
2125       // Ensure that we get keyboard focus on mouse down as a plugin window may
2126       // have grabbed keyboard focus.
2127       if (event->type() == ui::ET_MOUSE_PRESSED)
2128         SetKeyboardFocus();
2129     }
2130   }
2131
2132   switch (event->type()) {
2133     case ui::ET_MOUSE_PRESSED:
2134       window_->SetCapture();
2135       break;
2136     case ui::ET_MOUSE_RELEASED:
2137       if (!NeedsMouseCapture())
2138         window_->ReleaseCapture();
2139       break;
2140     default:
2141       break;
2142   }
2143
2144   // Needed to propagate mouse event to |window_->parent()->delegate()|, but
2145   // note that it might be something other than a WebContentsViewAura instance.
2146   // TODO(pkotwicz): Find a better way of doing this.
2147   // In fullscreen mode which is typically used by flash, don't forward
2148   // the mouse events to the parent. The renderer and the plugin process
2149   // handle these events.
2150   if (!is_fullscreen_ && window_->parent() && window_->parent()->delegate() &&
2151       !(event->flags() & ui::EF_FROM_TOUCH)) {
2152     event->ConvertLocationToTarget(window_, window_->parent());
2153     window_->parent()->delegate()->OnMouseEvent(event);
2154   }
2155
2156   if (!IsXButtonUpEvent(event))
2157     event->SetHandled();
2158 }
2159
2160 void RenderWidgetHostViewAura::OnScrollEvent(ui::ScrollEvent* event) {
2161   TRACE_EVENT0("input", "RenderWidgetHostViewAura::OnScrollEvent");
2162   if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
2163     return;
2164
2165   if (event->type() == ui::ET_SCROLL) {
2166 #if !defined(OS_WIN)
2167     // TODO(ananta)
2168     // Investigate if this is true for Windows 8 Metro ASH as well.
2169     if (event->finger_count() != 2)
2170       return;
2171 #endif
2172     blink::WebGestureEvent gesture_event =
2173         MakeWebGestureEventFlingCancel();
2174     host_->ForwardGestureEvent(gesture_event);
2175     blink::WebMouseWheelEvent mouse_wheel_event =
2176         MakeWebMouseWheelEvent(*event);
2177     host_->ForwardWheelEvent(mouse_wheel_event);
2178     RecordAction(base::UserMetricsAction("TrackpadScroll"));
2179   } else if (event->type() == ui::ET_SCROLL_FLING_START ||
2180              event->type() == ui::ET_SCROLL_FLING_CANCEL) {
2181     blink::WebGestureEvent gesture_event = MakeWebGestureEvent(*event);
2182     host_->ForwardGestureEvent(gesture_event);
2183     if (event->type() == ui::ET_SCROLL_FLING_START)
2184       RecordAction(base::UserMetricsAction("TrackpadScrollFling"));
2185   }
2186
2187   event->SetHandled();
2188 }
2189
2190 void RenderWidgetHostViewAura::OnTouchEvent(ui::TouchEvent* event) {
2191   TRACE_EVENT0("input", "RenderWidgetHostViewAura::OnTouchEvent");
2192   if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
2193     return;
2194
2195   // Update the touch event first.
2196   if (!pointer_state_.OnTouch(*event)) {
2197     event->StopPropagation();
2198     return;
2199   }
2200
2201   blink::WebTouchEvent touch_event = ui::CreateWebTouchEventFromMotionEvent(
2202       pointer_state_, event->may_cause_scrolling());
2203   pointer_state_.CleanupRemovedTouchPoints(*event);
2204
2205   // It is important to always mark events as being handled asynchronously when
2206   // they are forwarded. This ensures that the current event does not get
2207   // processed by the gesture recognizer before events currently awaiting
2208   // dispatch in the touch queue.
2209   event->DisableSynchronousHandling();
2210
2211   // Set unchanged touch point to StateStationary for touchmove and
2212   // touchcancel to make sure only send one ack per WebTouchEvent.
2213   MarkUnchangedTouchPointsAsStationary(&touch_event, event->touch_id());
2214   host_->ForwardTouchEventWithLatencyInfo(touch_event, *event->latency());
2215 }
2216
2217 void RenderWidgetHostViewAura::OnGestureEvent(ui::GestureEvent* event) {
2218   TRACE_EVENT0("input", "RenderWidgetHostViewAura::OnGestureEvent");
2219   if ((event->type() == ui::ET_GESTURE_PINCH_BEGIN ||
2220       event->type() == ui::ET_GESTURE_PINCH_UPDATE ||
2221       event->type() == ui::ET_GESTURE_PINCH_END) && !pinch_zoom_enabled_) {
2222     event->SetHandled();
2223     return;
2224   }
2225
2226   if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
2227     return;
2228
2229   // Confirm existing composition text on TAP gesture, to make sure the input
2230   // caret won't be moved with an ongoing composition text.
2231   if (event->type() == ui::ET_GESTURE_TAP)
2232     FinishImeCompositionSession();
2233
2234   blink::WebGestureEvent gesture = MakeWebGestureEvent(*event);
2235   if (event->type() == ui::ET_GESTURE_TAP_DOWN) {
2236     // Webkit does not stop a fling-scroll on tap-down. So explicitly send an
2237     // event to stop any in-progress flings.
2238     blink::WebGestureEvent fling_cancel = gesture;
2239     fling_cancel.type = blink::WebInputEvent::GestureFlingCancel;
2240     fling_cancel.sourceDevice = blink::WebGestureDeviceTouchscreen;
2241     host_->ForwardGestureEvent(fling_cancel);
2242   }
2243
2244   if (gesture.type != blink::WebInputEvent::Undefined) {
2245     host_->ForwardGestureEventWithLatencyInfo(gesture, *event->latency());
2246
2247     if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN ||
2248         event->type() == ui::ET_GESTURE_SCROLL_UPDATE ||
2249         event->type() == ui::ET_GESTURE_SCROLL_END) {
2250       RecordAction(base::UserMetricsAction("TouchscreenScroll"));
2251     } else if (event->type() == ui::ET_SCROLL_FLING_START) {
2252       RecordAction(base::UserMetricsAction("TouchscreenScrollFling"));
2253     }
2254   }
2255
2256   // If a gesture is not processed by the webpage, then WebKit processes it
2257   // (e.g. generates synthetic mouse events).
2258   event->SetHandled();
2259 }
2260
2261 ////////////////////////////////////////////////////////////////////////////////
2262 // RenderWidgetHostViewAura, aura::client::ActivationDelegate implementation:
2263
2264 bool RenderWidgetHostViewAura::ShouldActivate() const {
2265   aura::WindowTreeHost* host = window_->GetHost();
2266   if (!host)
2267     return true;
2268   const ui::Event* event = host->dispatcher()->current_event();
2269   if (!event)
2270     return true;
2271   return is_fullscreen_;
2272 }
2273
2274 ////////////////////////////////////////////////////////////////////////////////
2275 // RenderWidgetHostViewAura, aura::client::CursorClientObserver implementation:
2276
2277 void RenderWidgetHostViewAura::OnCursorVisibilityChanged(bool is_visible) {
2278   NotifyRendererOfCursorVisibilityState(is_visible);
2279 }
2280
2281 ////////////////////////////////////////////////////////////////////////////////
2282 // RenderWidgetHostViewAura, aura::client::FocusChangeObserver implementation:
2283
2284 void RenderWidgetHostViewAura::OnWindowFocused(aura::Window* gained_focus,
2285                                                aura::Window* lost_focus) {
2286   DCHECK(window_ == gained_focus || window_ == lost_focus);
2287   if (window_ == gained_focus) {
2288     // We need to honor input bypass if the associated tab is does not want
2289     // input. This gives the current focused window a chance to be the text
2290     // input client and handle events.
2291     if (host_->ignore_input_events())
2292       return;
2293
2294     host_->GotFocus();
2295     host_->SetActive(true);
2296
2297     ui::InputMethod* input_method = GetInputMethod();
2298     if (input_method) {
2299       // Ask the system-wide IME to send all TextInputClient messages to |this|
2300       // object.
2301       input_method->SetFocusedTextInputClient(this);
2302
2303       // Often the application can set focus to the view in response to a key
2304       // down. However the following char event shouldn't be sent to the web
2305       // page.
2306       host_->SuppressNextCharEvents();
2307     }
2308
2309     BrowserAccessibilityManager* manager =
2310         host_->GetRootBrowserAccessibilityManager();
2311     if (manager)
2312       manager->OnWindowFocused();
2313   } else if (window_ == lost_focus) {
2314     host_->SetActive(false);
2315     host_->Blur();
2316
2317     DetachFromInputMethod();
2318
2319     if (touch_editing_client_)
2320       touch_editing_client_->EndTouchEditing(false);
2321
2322     if (overscroll_controller_)
2323       overscroll_controller_->Cancel();
2324
2325     BrowserAccessibilityManager* manager =
2326         host_->GetRootBrowserAccessibilityManager();
2327     if (manager)
2328       manager->OnWindowBlurred();
2329
2330     // If we lose the focus while fullscreen, close the window; Pepper Flash
2331     // won't do it for us (unlike NPAPI Flash). However, we do not close the
2332     // window if we lose the focus to a window on another display.
2333     gfx::Screen* screen = gfx::Screen::GetScreenFor(window_);
2334     bool focusing_other_display =
2335         gained_focus && screen->GetNumDisplays() > 1 &&
2336         (screen->GetDisplayNearestWindow(window_).id() !=
2337          screen->GetDisplayNearestWindow(gained_focus).id());
2338     if (is_fullscreen_ && !in_shutdown_ && !focusing_other_display) {
2339 #if defined(OS_WIN)
2340       // On Windows, if we are switching to a non Aura Window on a different
2341       // screen we should not close the fullscreen window.
2342       if (!gained_focus) {
2343         POINT point = {0};
2344         ::GetCursorPos(&point);
2345         if (screen->GetDisplayNearestWindow(window_).id() !=
2346             screen->GetDisplayNearestPoint(gfx::Point(point)).id())
2347           return;
2348       }
2349 #endif
2350       Shutdown();
2351       return;
2352     }
2353
2354     // Close the child popup window if we lose focus (e.g. due to a JS alert or
2355     // system modal dialog). This is particularly important if
2356     // |popup_child_host_view_| has mouse capture.
2357     if (popup_child_host_view_)
2358       popup_child_host_view_->Shutdown();
2359   }
2360 }
2361
2362 ////////////////////////////////////////////////////////////////////////////////
2363 // RenderWidgetHostViewAura, aura::WindowTreeHostObserver implementation:
2364
2365 void RenderWidgetHostViewAura::OnHostMoved(const aura::WindowTreeHost* host,
2366                                            const gfx::Point& new_origin) {
2367   TRACE_EVENT1("ui", "RenderWidgetHostViewAura::OnHostMoved",
2368                "new_origin", new_origin.ToString());
2369
2370   UpdateScreenInfo(window_);
2371 }
2372
2373 ////////////////////////////////////////////////////////////////////////////////
2374 // RenderWidgetHostViewAura, private:
2375
2376 RenderWidgetHostViewAura::~RenderWidgetHostViewAura() {
2377   if (touch_editing_client_)
2378     touch_editing_client_->OnViewDestroyed();
2379
2380   delegated_frame_host_.reset();
2381   window_observer_.reset();
2382   if (window_->GetHost())
2383     window_->GetHost()->RemoveObserver(this);
2384   UnlockMouse();
2385   if (popup_parent_host_view_) {
2386     DCHECK(popup_parent_host_view_->popup_child_host_view_ == NULL ||
2387            popup_parent_host_view_->popup_child_host_view_ == this);
2388     popup_parent_host_view_->popup_child_host_view_ = NULL;
2389   }
2390   if (popup_child_host_view_) {
2391     DCHECK(popup_child_host_view_->popup_parent_host_view_ == NULL ||
2392            popup_child_host_view_->popup_parent_host_view_ == this);
2393     popup_child_host_view_->popup_parent_host_view_ = NULL;
2394   }
2395   event_filter_for_popup_exit_.reset();
2396   aura::client::SetTooltipText(window_, NULL);
2397   gfx::Screen::GetScreenFor(window_)->RemoveObserver(this);
2398
2399   // This call is usually no-op since |this| object is already removed from the
2400   // Aura root window and we don't have a way to get an input method object
2401   // associated with the window, but just in case.
2402   DetachFromInputMethod();
2403
2404 #if defined(OS_WIN)
2405   // The LegacyRenderWidgetHostHWND window should have been destroyed in
2406   // RenderWidgetHostViewAura::OnWindowDestroying and the pointer should
2407   // be set to NULL.
2408   DCHECK(!legacy_render_widget_host_HWND_);
2409 #endif
2410 }
2411
2412 void RenderWidgetHostViewAura::UpdateCursorIfOverSelf() {
2413   const gfx::Point screen_point =
2414       gfx::Screen::GetScreenFor(GetNativeView())->GetCursorScreenPoint();
2415   aura::Window* root_window = window_->GetRootWindow();
2416   if (!root_window)
2417     return;
2418
2419   gfx::Point root_window_point = screen_point;
2420   aura::client::ScreenPositionClient* screen_position_client =
2421       aura::client::GetScreenPositionClient(root_window);
2422   if (screen_position_client) {
2423     screen_position_client->ConvertPointFromScreen(
2424         root_window, &root_window_point);
2425   }
2426
2427   if (root_window->GetEventHandlerForPoint(root_window_point) != window_)
2428     return;
2429
2430   gfx::NativeCursor cursor = current_cursor_.GetNativeCursor();
2431   // Do not show loading cursor when the cursor is currently hidden.
2432   if (is_loading_ && cursor != ui::kCursorNone)
2433     cursor = ui::kCursorPointer;
2434
2435   aura::client::CursorClient* cursor_client =
2436       aura::client::GetCursorClient(root_window);
2437   if (cursor_client) {
2438     cursor_client->SetCursor(cursor);
2439   }
2440 }
2441
2442 ui::InputMethod* RenderWidgetHostViewAura::GetInputMethod() const {
2443   aura::Window* root_window = window_->GetRootWindow();
2444   if (!root_window)
2445     return NULL;
2446   return root_window->GetHost()->GetInputMethod();
2447 }
2448
2449 void RenderWidgetHostViewAura::Shutdown() {
2450   if (!in_shutdown_) {
2451     in_shutdown_ = true;
2452     host_->Shutdown();
2453   }
2454 }
2455
2456 bool RenderWidgetHostViewAura::NeedsInputGrab() {
2457   return popup_type_ == blink::WebPopupTypePage;
2458 }
2459
2460 bool RenderWidgetHostViewAura::NeedsMouseCapture() {
2461 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
2462   return NeedsInputGrab();
2463 #endif
2464   return false;
2465 }
2466
2467 void RenderWidgetHostViewAura::FinishImeCompositionSession() {
2468   if (!has_composition_text_)
2469     return;
2470   if (host_) {
2471     host_->ImeConfirmComposition(base::string16(), gfx::Range::InvalidRange(),
2472                                  false);
2473   }
2474   ImeCancelComposition();
2475 }
2476
2477 void RenderWidgetHostViewAura::ModifyEventMovementAndCoords(
2478     blink::WebMouseEvent* event) {
2479   // If the mouse has just entered, we must report zero movementX/Y. Hence we
2480   // reset any global_mouse_position set previously.
2481   if (event->type == blink::WebInputEvent::MouseEnter ||
2482       event->type == blink::WebInputEvent::MouseLeave)
2483     global_mouse_position_.SetPoint(event->globalX, event->globalY);
2484
2485   // Movement is computed by taking the difference of the new cursor position
2486   // and the previous. Under mouse lock the cursor will be warped back to the
2487   // center so that we are not limited by clipping boundaries.
2488   // We do not measure movement as the delta from cursor to center because
2489   // we may receive more mouse movement events before our warp has taken
2490   // effect.
2491   event->movementX = event->globalX - global_mouse_position_.x();
2492   event->movementY = event->globalY - global_mouse_position_.y();
2493
2494   global_mouse_position_.SetPoint(event->globalX, event->globalY);
2495
2496   // Under mouse lock, coordinates of mouse are locked to what they were when
2497   // mouse lock was entered.
2498   if (mouse_locked_) {
2499     event->x = unlocked_mouse_position_.x();
2500     event->y = unlocked_mouse_position_.y();
2501     event->windowX = unlocked_mouse_position_.x();
2502     event->windowY = unlocked_mouse_position_.y();
2503     event->globalX = unlocked_global_mouse_position_.x();
2504     event->globalY = unlocked_global_mouse_position_.y();
2505   } else {
2506     unlocked_mouse_position_.SetPoint(event->x, event->y);
2507     unlocked_global_mouse_position_.SetPoint(event->globalX, event->globalY);
2508   }
2509 }
2510
2511 void RenderWidgetHostViewAura::NotifyRendererOfCursorVisibilityState(
2512     bool is_visible) {
2513   if (host_->is_hidden() ||
2514       (cursor_visibility_state_in_renderer_ == VISIBLE && is_visible) ||
2515       (cursor_visibility_state_in_renderer_ == NOT_VISIBLE && !is_visible))
2516     return;
2517
2518   cursor_visibility_state_in_renderer_ = is_visible ? VISIBLE : NOT_VISIBLE;
2519   host_->SendCursorVisibilityState(is_visible);
2520 }
2521
2522 void RenderWidgetHostViewAura::SetOverscrollControllerEnabled(bool enabled) {
2523   if (!enabled)
2524     overscroll_controller_.reset();
2525   else if (!overscroll_controller_)
2526     overscroll_controller_.reset(new OverscrollController());
2527 }
2528
2529 void RenderWidgetHostViewAura::SnapToPhysicalPixelBoundary() {
2530   // The top left corner of our view in window coordinates might not land on a
2531   // device pixel boundary if we have a non-integer device scale. In that case,
2532   // to avoid the web contents area looking blurry we translate the web contents
2533   // in the +x, +y direction to land on the nearest pixel boundary. This may
2534   // cause the bottom and right edges to be clipped slightly, but that's ok.
2535   aura::Window* snapped = NULL;
2536   // On desktop, use the root window. On alternative environment (ash),
2537   // use the toplevel window which must be already snapped.
2538   if (gfx::Screen::GetScreenFor(window_) !=
2539       gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_ALTERNATE)) {
2540     snapped = window_->GetRootWindow();
2541   } else {
2542     snapped = window_->GetToplevelWindow();
2543   }
2544   if (snapped && snapped != window_)
2545     ui::SnapLayerToPhysicalPixelBoundary(snapped->layer(), window_->layer());
2546
2547   has_snapped_to_boundary_ = true;
2548 }
2549
2550 void RenderWidgetHostViewAura::OnShowContextMenu() {
2551 #if defined(OS_WIN)
2552   showing_context_menu_ = true;
2553 #endif
2554 }
2555
2556 void RenderWidgetHostViewAura::InternalSetBounds(const gfx::Rect& rect) {
2557   SnapToPhysicalPixelBoundary();
2558   // Don't recursively call SetBounds if this bounds update is the result of
2559   // a Window::SetBoundsInternal call.
2560   if (!in_bounds_changed_)
2561     window_->SetBounds(rect);
2562   host_->WasResized();
2563   delegated_frame_host_->WasResized();
2564   if (touch_editing_client_) {
2565     touch_editing_client_->OnSelectionOrCursorChanged(selection_anchor_,
2566                                                       selection_focus_);
2567   }
2568 #if defined(OS_WIN)
2569   // Create the legacy dummy window which corresponds to the bounds of the
2570   // webcontents. This will be passed as the container window for windowless
2571   // plugins.
2572   // Plugins like Flash assume the container window which is returned via the
2573   // NPNVnetscapeWindow property corresponds to the bounds of the webpage.
2574   // This is not true in Aura where we have only HWND which is the main Aura
2575   // window. If we return this window to plugins like Flash then it causes the
2576   // coordinate translations done by these plugins to break.
2577   // Additonally the legacy dummy window is needed for accessibility and for
2578   // scrolling to work in legacy drivers for trackpoints/trackpads, etc.
2579   if (!legacy_window_destroyed_ && GetNativeViewId()) {
2580     if (!legacy_render_widget_host_HWND_) {
2581       legacy_render_widget_host_HWND_ = LegacyRenderWidgetHostHWND::Create(
2582           reinterpret_cast<HWND>(GetNativeViewId()));
2583     }
2584     if (legacy_render_widget_host_HWND_) {
2585       legacy_render_widget_host_HWND_->set_host(this);
2586       legacy_render_widget_host_HWND_->SetBounds(
2587           window_->GetBoundsInRootWindow());
2588       // There are cases where the parent window is created, made visible and
2589       // the associated RenderWidget is also visible before the
2590       // LegacyRenderWidgetHostHWND instace is created. Ensure that it is shown
2591       // here.
2592       if (!host_->is_hidden())
2593         legacy_render_widget_host_HWND_->Show();
2594     }
2595   }
2596
2597   if (mouse_locked_)
2598     UpdateMouseLockRegion();
2599 #endif
2600 }
2601
2602 void RenderWidgetHostViewAura::SchedulePaintIfNotInClip(
2603     const gfx::Rect& rect,
2604     const gfx::Rect& clip) {
2605   if (!clip.IsEmpty()) {
2606     gfx::Rect to_paint = gfx::SubtractRects(rect, clip);
2607     if (!to_paint.IsEmpty())
2608       window_->SchedulePaintInRect(to_paint);
2609   } else {
2610     window_->SchedulePaintInRect(rect);
2611   }
2612 }
2613
2614 bool RenderWidgetHostViewAura::ShouldMoveToCenter() {
2615   gfx::Rect rect = window_->bounds();
2616   rect = ConvertRectToScreen(rect);
2617   int border_x = rect.width() * kMouseLockBorderPercentage / 100;
2618   int border_y = rect.height() * kMouseLockBorderPercentage / 100;
2619
2620   return global_mouse_position_.x() < rect.x() + border_x ||
2621       global_mouse_position_.x() > rect.right() - border_x ||
2622       global_mouse_position_.y() < rect.y() + border_y ||
2623       global_mouse_position_.y() > rect.bottom() - border_y;
2624 }
2625
2626 void RenderWidgetHostViewAura::AddedToRootWindow() {
2627   window_->GetHost()->AddObserver(this);
2628   UpdateScreenInfo(window_);
2629
2630   aura::client::CursorClient* cursor_client =
2631       aura::client::GetCursorClient(window_->GetRootWindow());
2632   if (cursor_client) {
2633     cursor_client->AddObserver(this);
2634     NotifyRendererOfCursorVisibilityState(cursor_client->IsCursorVisible());
2635   }
2636   if (HasFocus()) {
2637     ui::InputMethod* input_method = GetInputMethod();
2638     if (input_method)
2639       input_method->SetFocusedTextInputClient(this);
2640   }
2641
2642 #if defined(OS_WIN)
2643   // The parent may have changed here. Ensure that the legacy window is
2644   // reparented accordingly.
2645   if (legacy_render_widget_host_HWND_)
2646     legacy_render_widget_host_HWND_->UpdateParent(
2647         reinterpret_cast<HWND>(GetNativeViewId()));
2648 #endif
2649
2650   delegated_frame_host_->SetCompositor(window_->GetHost()->compositor());
2651   if (window_->GetHost()->compositor())
2652     begin_frame_observer_proxy_.SetCompositor(window_->GetHost()->compositor());
2653 }
2654
2655 void RenderWidgetHostViewAura::RemovingFromRootWindow() {
2656   aura::client::CursorClient* cursor_client =
2657       aura::client::GetCursorClient(window_->GetRootWindow());
2658   if (cursor_client)
2659     cursor_client->RemoveObserver(this);
2660
2661   DetachFromInputMethod();
2662
2663   window_->GetHost()->RemoveObserver(this);
2664   delegated_frame_host_->ResetCompositor();
2665   begin_frame_observer_proxy_.ResetCompositor();
2666
2667 #if defined(OS_WIN)
2668   // Update the legacy window's parent temporarily to the desktop window. It
2669   // will eventually get reparented to the right root.
2670   if (legacy_render_widget_host_HWND_)
2671     legacy_render_widget_host_HWND_->UpdateParent(::GetDesktopWindow());
2672 #endif
2673 }
2674
2675 void RenderWidgetHostViewAura::DetachFromInputMethod() {
2676   ui::InputMethod* input_method = GetInputMethod();
2677   if (input_method)
2678     input_method->DetachTextInputClient(this);
2679 }
2680
2681 void RenderWidgetHostViewAura::ForwardKeyboardEvent(
2682     const NativeWebKeyboardEvent& event) {
2683 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
2684   ui::TextEditKeyBindingsDelegateAuraLinux* keybinding_delegate =
2685       ui::GetTextEditKeyBindingsDelegate();
2686   std::vector<ui::TextEditCommandAuraLinux> commands;
2687   if (!event.skip_in_browser &&
2688       keybinding_delegate &&
2689       event.os_event &&
2690       keybinding_delegate->MatchEvent(*event.os_event, &commands)) {
2691     // Transform from ui/ types to content/ types.
2692     EditCommands edit_commands;
2693     for (std::vector<ui::TextEditCommandAuraLinux>::const_iterator it =
2694              commands.begin(); it != commands.end(); ++it) {
2695       edit_commands.push_back(EditCommand(it->GetCommandString(),
2696                                           it->argument()));
2697     }
2698     host_->Send(new InputMsg_SetEditCommandsForNextKeyEvent(
2699         host_->GetRoutingID(), edit_commands));
2700     NativeWebKeyboardEvent copy_event(event);
2701     copy_event.match_edit_command = true;
2702     host_->ForwardKeyboardEvent(copy_event);
2703     return;
2704   }
2705 #endif
2706
2707   host_->ForwardKeyboardEvent(event);
2708 }
2709
2710 ////////////////////////////////////////////////////////////////////////////////
2711 // DelegatedFrameHost, public:
2712
2713 ui::Layer* RenderWidgetHostViewAura::DelegatedFrameHostGetLayer() const {
2714   return window_->layer();
2715 }
2716
2717 bool RenderWidgetHostViewAura::DelegatedFrameHostIsVisible() const {
2718   return !host_->is_hidden();
2719 }
2720
2721 gfx::Size RenderWidgetHostViewAura::DelegatedFrameHostDesiredSizeInDIP() const {
2722   return window_->bounds().size();
2723 }
2724
2725 bool RenderWidgetHostViewAura::DelegatedFrameCanCreateResizeLock() const {
2726 #if !defined(OS_CHROMEOS)
2727   // On Windows and Linux, holding pointer moves will not help throttling
2728   // resizes.
2729   // TODO(piman): on Windows we need to block (nested message loop?) the
2730   // WM_SIZE event. On Linux we need to throttle at the WM level using
2731   // _NET_WM_SYNC_REQUEST.
2732   return false;
2733 #else
2734   if (host_->auto_resize_enabled())
2735     return false;
2736   return true;
2737 #endif
2738 }
2739
2740 scoped_ptr<ResizeLock>
2741 RenderWidgetHostViewAura::DelegatedFrameHostCreateResizeLock(
2742     bool defer_compositor_lock) {
2743   gfx::Size desired_size = window_->bounds().size();
2744   return scoped_ptr<ResizeLock>(new CompositorResizeLock(
2745       window_->GetHost(),
2746       desired_size,
2747       defer_compositor_lock,
2748       base::TimeDelta::FromMilliseconds(kResizeLockTimeoutMs)));
2749 }
2750
2751 void RenderWidgetHostViewAura::DelegatedFrameHostResizeLockWasReleased() {
2752   host_->WasResized();
2753 }
2754
2755 void RenderWidgetHostViewAura::DelegatedFrameHostSendCompositorSwapAck(
2756     int output_surface_id,
2757     const cc::CompositorFrameAck& ack) {
2758   host_->Send(new ViewMsg_SwapCompositorFrameAck(host_->GetRoutingID(),
2759                                                  output_surface_id, ack));
2760 }
2761
2762 void RenderWidgetHostViewAura::DelegatedFrameHostSendReclaimCompositorResources(
2763     int output_surface_id,
2764     const cc::CompositorFrameAck& ack) {
2765   host_->Send(new ViewMsg_ReclaimCompositorResources(host_->GetRoutingID(),
2766                                                      output_surface_id, ack));
2767 }
2768
2769 void RenderWidgetHostViewAura::DelegatedFrameHostOnLostCompositorResources() {
2770   host_->ScheduleComposite();
2771 }
2772
2773 void RenderWidgetHostViewAura::DelegatedFrameHostUpdateVSyncParameters(
2774     const base::TimeTicks& timebase,
2775     const base::TimeDelta& interval) {
2776   host_->UpdateVSyncParameters(timebase, interval);
2777 }
2778
2779 void RenderWidgetHostViewAura::OnDidNavigateMainFrameToNewPage() {
2780   ui::GestureRecognizer::Get()->CancelActiveTouches(window_);
2781 }
2782
2783 uint32_t RenderWidgetHostViewAura::GetSurfaceIdNamespace() {
2784   return delegated_frame_host_->GetSurfaceIdNamespace();
2785 }
2786
2787 ////////////////////////////////////////////////////////////////////////////////
2788 // RenderWidgetHostViewBase, public:
2789
2790 // static
2791 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
2792   GetScreenInfoForWindow(results, NULL);
2793 }
2794
2795 }  // namespace content