src/ui/keyboard/keyboard_controller.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/keyboard/keyboard_controller.h"
   6
   7 #include <set>
   8
   9 #include "base/bind.h"
  10 #include "base/command_line.h"
  11 #include "content/public/browser/render_widget_host.h"
  12 #include "content/public/browser/render_widget_host_iterator.h"
  13 #include "content/public/browser/render_widget_host_view.h"
  14 #include "ui/aura/window.h"
  15 #include "ui/aura/window_delegate.h"
  16 #include "ui/aura/window_observer.h"
  17 #include "ui/base/cursor/cursor.h"
  18 #include "ui/base/hit_test.h"
  19 #include "ui/base/ime/input_method.h"
  20 #include "ui/base/ime/text_input_client.h"
  21 #include "ui/compositor/layer_animation_observer.h"
  22 #include "ui/compositor/scoped_layer_animation_settings.h"
  23 #include "ui/gfx/path.h"
  24 #include "ui/gfx/rect.h"
  25 #include "ui/gfx/skia_util.h"
  26 #include "ui/keyboard/keyboard_controller_observer.h"
  27 #include "ui/keyboard/keyboard_controller_proxy.h"
  28 #include "ui/keyboard/keyboard_layout_manager.h"
  29 #include "ui/keyboard/keyboard_util.h"
  30 #include "ui/wm/core/masked_window_targeter.h"
  31
  32 #if defined(OS_CHROMEOS)
  33 #include "base/process/launch.h"
  34 #include "base/sys_info.h"
  35 #endif
  36
  37 namespace {
  38
  39 const int kHideKeyboardDelayMs = 100;
  40
  41 // The virtual keyboard show/hide animation duration.
  42 const int kShowAnimationDurationMs = 350;
  43 const int kHideAnimationDurationMs = 100;
  44
  45 // The opacity of virtual keyboard container when show animation starts or
  46 // hide animation finishes.
  47 // TODO(rsadam@): Investigate why setting this to zero crashes.
  48 const float kAnimationStartOrAfterHideOpacity = 0.01f;
  49
  50 // Event targeter for the keyboard container.
  51 class KeyboardContainerTargeter : public wm::MaskedWindowTargeter {
  52  public:
  53   KeyboardContainerTargeter(aura::Window* container,
  54                             keyboard::KeyboardControllerProxy* proxy)
  55       : wm::MaskedWindowTargeter(container),
  56         proxy_(proxy) {
  57   }
  58
  59   virtual ~KeyboardContainerTargeter() {}
  60
  61  private:
  62   // wm::MaskedWindowTargeter:
  63   virtual bool GetHitTestMask(aura::Window* window,
  64                               gfx::Path* mask) const OVERRIDE {
  65     if (proxy_ && !proxy_->HasKeyboardWindow())
  66       return true;
  67     gfx::Rect keyboard_bounds = proxy_ ? proxy_->GetKeyboardWindow()->bounds() :
  68         keyboard::DefaultKeyboardBoundsFromWindowBounds(window->bounds());
  69     mask->addRect(RectToSkRect(keyboard_bounds));
  70     return true;
  71   }
  72
  73   keyboard::KeyboardControllerProxy* proxy_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(KeyboardContainerTargeter);
  76 };
  77
  78 // The KeyboardWindowDelegate makes sure the keyboard-window does not get focus.
  79 // This is necessary to make sure that the synthetic key-events reach the target
  80 // window.
  81 // The delegate deletes itself when the window is destroyed.
  82 class KeyboardWindowDelegate : public aura::WindowDelegate {
  83  public:
  84   explicit KeyboardWindowDelegate(keyboard::KeyboardControllerProxy* proxy)
  85       : proxy_(proxy) {}
  86   virtual ~KeyboardWindowDelegate() {}
  87
  88  private:
  89   // Overridden from aura::WindowDelegate:
  90   virtual gfx::Size GetMinimumSize() const OVERRIDE { return gfx::Size(); }
  91   virtual gfx::Size GetMaximumSize() const OVERRIDE { return gfx::Size(); }
  92   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
  93                                const gfx::Rect& new_bounds) OVERRIDE {
  94     bounds_ = new_bounds;
  95   }
  96   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
  97     return gfx::kNullCursor;
  98   }
  99   virtual int GetNonClientComponent(const gfx::Point& point) const OVERRIDE {
 100     return HTNOWHERE;
 101   }
 102   virtual bool ShouldDescendIntoChildForEventHandling(
 103       aura::Window* child,
 104       const gfx::Point& location) OVERRIDE {
 105     return true;
 106   }
 107   virtual bool CanFocus() OVERRIDE { return false; }
 108   virtual void OnCaptureLost() OVERRIDE {}
 109   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {}
 110   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE {}
 111   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {}
 112   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE { delete this; }
 113   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {}
 114   virtual bool HasHitTestMask() const OVERRIDE {
 115     return !proxy_ || proxy_->HasKeyboardWindow();
 116   }
 117   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {
 118     if (proxy_ && !proxy_->HasKeyboardWindow())
 119       return;
 120     gfx::Rect keyboard_bounds = proxy_ ? proxy_->GetKeyboardWindow()->bounds() :
 121         keyboard::DefaultKeyboardBoundsFromWindowBounds(bounds_);
 122     mask->addRect(RectToSkRect(keyboard_bounds));
 123   }
 124
 125   gfx::Rect bounds_;
 126   keyboard::KeyboardControllerProxy* proxy_;
 127
 128   DISALLOW_COPY_AND_ASSIGN(KeyboardWindowDelegate);
 129 };
 130
 131 void ToggleTouchEventLogging(bool enable) {
 132 #if defined(OS_CHROMEOS)
 133   if (!base::SysInfo::IsRunningOnChromeOS())
 134     return;
 135   CommandLine command(
 136       base::FilePath("/opt/google/touchscreen/toggle_touch_event_logging"));
 137   if (enable)
 138     command.AppendArg("1");
 139   else
 140     command.AppendArg("0");
 141   VLOG(1) << "Running " << command.GetCommandLineString();
 142   base::LaunchOptions options;
 143   options.wait = true;
 144   base::LaunchProcess(command, options, NULL);
 145 #endif
 146 }
 147
 148 aura::Window *GetFrameWindow(aura::Window *window) {
 149   // Each container window has a non-negative id.  Stop traversing at the child
 150   // of a container window.
 151   if (!window)
 152     return NULL;
 153   while (window->parent() && window->parent()->id() < 0) {
 154     window = window->parent();
 155   }
 156   return window;
 157 }
 158
 159 }  // namespace
 160
 161 namespace keyboard {
 162
 163 // Observer for both keyboard show and hide animations. It should be owned by
 164 // KeyboardController.
 165 class CallbackAnimationObserver : public ui::LayerAnimationObserver {
 166  public:
 167   CallbackAnimationObserver(ui::LayerAnimator* animator,
 168                             base::Callback<void(void)> callback);
 169   virtual ~CallbackAnimationObserver();
 170
 171  private:
 172   // Overridden from ui::LayerAnimationObserver:
 173   virtual void OnLayerAnimationEnded(ui::LayerAnimationSequence* seq) OVERRIDE;
 174   virtual void OnLayerAnimationAborted(
 175       ui::LayerAnimationSequence* seq) OVERRIDE;
 176   virtual void OnLayerAnimationScheduled(
 177       ui::LayerAnimationSequence* seq) OVERRIDE {}
 178
 179   ui::LayerAnimator* animator_;
 180   base::Callback<void(void)> callback_;
 181
 182   DISALLOW_COPY_AND_ASSIGN(CallbackAnimationObserver);
 183 };
 184
 185 CallbackAnimationObserver::CallbackAnimationObserver(
 186     ui::LayerAnimator* animator, base::Callback<void(void)> callback)
 187     : animator_(animator), callback_(callback) {
 188 }
 189
 190 CallbackAnimationObserver::~CallbackAnimationObserver() {
 191   animator_->RemoveObserver(this);
 192 }
 193
 194 void CallbackAnimationObserver::OnLayerAnimationEnded(
 195     ui::LayerAnimationSequence* seq) {
 196   if (animator_->is_animating())
 197     return;
 198   animator_->RemoveObserver(this);
 199   callback_.Run();
 200 }
 201
 202 void CallbackAnimationObserver::OnLayerAnimationAborted(
 203     ui::LayerAnimationSequence* seq) {
 204   animator_->RemoveObserver(this);
 205 }
 206
 207 class WindowBoundsChangeObserver : public aura::WindowObserver {
 208  public:
 209   virtual void OnWindowBoundsChanged(aura::Window* window,
 210                                      const gfx::Rect& old_bounds,
 211                                      const gfx::Rect& new_bounds) OVERRIDE;
 212   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
 213
 214   void AddObservedWindow(aura::Window* window);
 215   void RemoveAllObservedWindows();
 216
 217  private:
 218   std::set<aura::Window*> observed_windows_;
 219 };
 220
 221 void WindowBoundsChangeObserver::OnWindowBoundsChanged(aura::Window* window,
 222     const gfx::Rect& old_bounds, const gfx::Rect& new_bounds) {
 223   KeyboardController* controller =  KeyboardController::GetInstance();
 224   if (controller)
 225     controller->UpdateWindowInsets(window);
 226 }
 227
 228 void WindowBoundsChangeObserver::OnWindowDestroyed(aura::Window* window) {
 229   if (window->HasObserver(this))
 230     window->RemoveObserver(this);
 231   observed_windows_.erase(window);
 232 }
 233
 234 void WindowBoundsChangeObserver::AddObservedWindow(aura::Window* window) {
 235   if (!window->HasObserver(this)) {
 236     window->AddObserver(this);
 237     observed_windows_.insert(window);
 238   }
 239 }
 240
 241 void WindowBoundsChangeObserver::RemoveAllObservedWindows() {
 242   for (std::set<aura::Window*>::iterator it = observed_windows_.begin();
 243        it != observed_windows_.end(); ++it)
 244     (*it)->RemoveObserver(this);
 245   observed_windows_.clear();
 246 }
 247
 248 // static
 249 KeyboardController* KeyboardController::instance_ = NULL;
 250
 251 KeyboardController::KeyboardController(KeyboardControllerProxy* proxy)
 252     : proxy_(proxy),
 253       input_method_(NULL),
 254       keyboard_visible_(false),
 255       show_on_resize_(false),
 256       lock_keyboard_(false),
 257       type_(ui::TEXT_INPUT_TYPE_NONE),
 258       weak_factory_(this) {
 259   CHECK(proxy);
 260   input_method_ = proxy_->GetInputMethod();
 261   input_method_->AddObserver(this);
 262   window_bounds_observer_.reset(new WindowBoundsChangeObserver());
 263 }
 264
 265 KeyboardController::~KeyboardController() {
 266   if (container_)
 267     container_->RemoveObserver(this);
 268   if (input_method_)
 269     input_method_->RemoveObserver(this);
 270   ResetWindowInsets();
 271 }
 272
 273 // static
 274 void KeyboardController::ResetInstance(KeyboardController* controller) {
 275   if (instance_ && instance_ != controller)
 276     delete instance_;
 277   instance_ = controller;
 278 }
 279
 280 // static
 281 KeyboardController* KeyboardController::GetInstance() {
 282   return instance_;
 283 }
 284
 285 aura::Window* KeyboardController::GetContainerWindow() {
 286   if (!container_.get()) {
 287     container_.reset(new aura::Window(
 288         new KeyboardWindowDelegate(proxy_.get())));
 289     container_->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 290         new KeyboardContainerTargeter(container_.get(), proxy_.get())));
 291     container_->SetName("KeyboardContainer");
 292     container_->set_owned_by_parent(false);
 293     container_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 294     container_->AddObserver(this);
 295     container_->SetLayoutManager(new KeyboardLayoutManager(this));
 296   }
 297   return container_.get();
 298 }
 299
 300 void KeyboardController::NotifyKeyboardBoundsChanging(
 301     const gfx::Rect& new_bounds) {
 302   current_keyboard_bounds_ = new_bounds;
 303   if (proxy_->HasKeyboardWindow() && proxy_->GetKeyboardWindow()->IsVisible()) {
 304     FOR_EACH_OBSERVER(KeyboardControllerObserver,
 305                       observer_list_,
 306                       OnKeyboardBoundsChanging(new_bounds));
 307     if (keyboard::IsKeyboardOverscrollEnabled()) {
 308       // Adjust the height of the viewport for visible windows on the primary
 309       // display.
 310       // TODO(kevers): Add EnvObserver to properly initialize insets if a
 311       // window is created while the keyboard is visible.
 312       scoped_ptr<content::RenderWidgetHostIterator> widgets(
 313           content::RenderWidgetHost::GetRenderWidgetHosts());
 314       aura::Window *keyboard_window = proxy_->GetKeyboardWindow();
 315       aura::Window *root_window = keyboard_window->GetRootWindow();
 316       while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
 317         content::RenderWidgetHostView* view = widget->GetView();
 318         // Can be NULL, e.g. if the RenderWidget is being destroyed or
 319         // the render process crashed.
 320         if (view) {
 321           aura::Window *window = view->GetNativeView();
 322           // If virtual keyboard failed to load, a widget that displays error
 323           // message will be created and adds as a child of the virtual keyboard
 324           // window. We want to avoid add BoundsChangedObserver to that window.
 325           if (GetFrameWindow(window) != keyboard_window &&
 326               window->GetRootWindow() == root_window) {
 327             gfx::Rect window_bounds = window->GetBoundsInScreen();
 328             gfx::Rect intersect = gfx::IntersectRects(window_bounds,
 329                                                       new_bounds);
 330             int overlap = intersect.height();
 331             if (overlap > 0 && overlap < window_bounds.height())
 332               view->SetInsets(gfx::Insets(0, 0, overlap, 0));
 333             else
 334               view->SetInsets(gfx::Insets());
 335             AddBoundsChangedObserver(window);
 336           }
 337         }
 338       }
 339     } else {
 340       ResetWindowInsets();
 341     }
 342   } else {
 343     current_keyboard_bounds_ = gfx::Rect();
 344   }
 345 }
 346
 347 void KeyboardController::HideKeyboard(HideReason reason) {
 348   keyboard_visible_ = false;
 349   ToggleTouchEventLogging(true);
 350
 351   keyboard::LogKeyboardControlEvent(
 352       reason == HIDE_REASON_AUTOMATIC ?
 353           keyboard::KEYBOARD_CONTROL_HIDE_AUTO :
 354           keyboard::KEYBOARD_CONTROL_HIDE_USER);
 355
 356   NotifyKeyboardBoundsChanging(gfx::Rect());
 357
 358   set_lock_keyboard(false);
 359
 360   ui::LayerAnimator* container_animator = container_->layer()->GetAnimator();
 361   animation_observer_.reset(new CallbackAnimationObserver(
 362       container_animator,
 363       base::Bind(&KeyboardController::HideAnimationFinished,
 364                  base::Unretained(this))));
 365   container_animator->AddObserver(animation_observer_.get());
 366
 367   ui::ScopedLayerAnimationSettings settings(container_animator);
 368   settings.SetTweenType(gfx::Tween::FAST_OUT_LINEAR_IN);
 369   settings.SetTransitionDuration(
 370       base::TimeDelta::FromMilliseconds(kHideAnimationDurationMs));
 371   gfx::Transform transform;
 372   transform.Translate(0, kAnimationDistance);
 373   container_->SetTransform(transform);
 374   container_->layer()->SetOpacity(kAnimationStartOrAfterHideOpacity);
 375 }
 376
 377 void KeyboardController::AddObserver(KeyboardControllerObserver* observer) {
 378   observer_list_.AddObserver(observer);
 379 }
 380
 381 void KeyboardController::RemoveObserver(KeyboardControllerObserver* observer) {
 382   observer_list_.RemoveObserver(observer);
 383 }
 384
 385 void KeyboardController::ShowKeyboard(bool lock) {
 386   set_lock_keyboard(lock);
 387   ShowKeyboardInternal();
 388 }
 389
 390 void KeyboardController::OnWindowHierarchyChanged(
 391     const HierarchyChangeParams& params) {
 392   if (params.new_parent && params.target == container_.get())
 393     OnTextInputStateChanged(proxy_->GetInputMethod()->GetTextInputClient());
 394 }
 395
 396 void KeyboardController::Reload() {
 397   if (proxy_->HasKeyboardWindow()) {
 398     // A reload should never try to show virtual keyboard. If keyboard is not
 399     // visible before reload, it should keep invisible after reload.
 400     show_on_resize_ = false;
 401     proxy_->ReloadKeyboardIfNeeded();
 402   }
 403 }
 404
 405 void KeyboardController::OnTextInputStateChanged(
 406     const ui::TextInputClient* client) {
 407   if (!container_.get())
 408     return;
 409
 410   type_ = client ? client->GetTextInputType() : ui::TEXT_INPUT_TYPE_NONE;
 411
 412   if (type_ == ui::TEXT_INPUT_TYPE_NONE && !lock_keyboard_) {
 413     if (keyboard_visible_) {
 414       // Set the visibility state here so that any queries for visibility
 415       // before the timer fires returns the correct future value.
 416       keyboard_visible_ = false;
 417       base::MessageLoop::current()->PostDelayedTask(
 418           FROM_HERE,
 419           base::Bind(&KeyboardController::HideKeyboard,
 420                      weak_factory_.GetWeakPtr(), HIDE_REASON_AUTOMATIC),
 421           base::TimeDelta::FromMilliseconds(kHideKeyboardDelayMs));
 422     }
 423   } else {
 424     // Abort a pending keyboard hide.
 425     if (WillHideKeyboard()) {
 426       weak_factory_.InvalidateWeakPtrs();
 427       keyboard_visible_ = true;
 428     }
 429     proxy_->SetUpdateInputType(type_);
 430     // Do not explicitly show the Virtual keyboard unless it is in the process
 431     // of hiding. Instead, the virtual keyboard is shown in response to a user
 432     // gesture (mouse or touch) that is received while an element has input
 433     // focus. Showing the keyboard requires an explicit call to
 434     // OnShowImeIfNeeded.
 435   }
 436 }
 437
 438 void KeyboardController::OnInputMethodDestroyed(
 439     const ui::InputMethod* input_method) {
 440   DCHECK_EQ(input_method_, input_method);
 441   input_method_ = NULL;
 442 }
 443
 444 void KeyboardController::OnShowImeIfNeeded() {
 445   ShowKeyboardInternal();
 446 }
 447
 448 bool KeyboardController::ShouldEnableInsets(aura::Window* window) {
 449   aura::Window *keyboard_window = proxy_->GetKeyboardWindow();
 450   return (keyboard_window->GetRootWindow() == window->GetRootWindow() &&
 451           keyboard::IsKeyboardOverscrollEnabled() &&
 452           proxy_->GetKeyboardWindow()->IsVisible() &&
 453           keyboard_visible_);
 454 }
 455
 456 void KeyboardController::UpdateWindowInsets(aura::Window* window) {
 457   aura::Window *keyboard_window = proxy_->GetKeyboardWindow();
 458   if (window == keyboard_window)
 459     return;
 460
 461   scoped_ptr<content::RenderWidgetHostIterator> widgets(
 462       content::RenderWidgetHost::GetRenderWidgetHosts());
 463   while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
 464     content::RenderWidgetHostView* view = widget->GetView();
 465     if (view && window->Contains(view->GetNativeView())) {
 466       gfx::Rect window_bounds = view->GetNativeView()->GetBoundsInScreen();
 467       gfx::Rect intersect = gfx::IntersectRects(window_bounds,
 468           proxy_->GetKeyboardWindow()->bounds());
 469       int overlap = ShouldEnableInsets(window) ? intersect.height() : 0;
 470       if (overlap > 0 && overlap < window_bounds.height())
 471         view->SetInsets(gfx::Insets(0, 0, overlap, 0));
 472       else
 473         view->SetInsets(gfx::Insets());
 474       return;
 475     }
 476   }
 477 }
 478
 479 void KeyboardController::ShowKeyboardInternal() {
 480   if (!container_.get())
 481     return;
 482
 483   if (container_->children().empty()) {
 484     keyboard::MarkKeyboardLoadStarted();
 485     aura::Window* keyboard = proxy_->GetKeyboardWindow();
 486     keyboard->Show();
 487     container_->AddChild(keyboard);
 488     keyboard->set_owned_by_parent(false);
 489   }
 490
 491   proxy_->ReloadKeyboardIfNeeded();
 492
 493   if (keyboard_visible_) {
 494     return;
 495   } else if (proxy_->GetKeyboardWindow()->bounds().height() == 0) {
 496     show_on_resize_ = true;
 497     return;
 498   }
 499
 500   keyboard_visible_ = true;
 501
 502   // If the controller is in the process of hiding the keyboard, do not log
 503   // the stat here since the keyboard will not actually be shown.
 504   if (!WillHideKeyboard())
 505     keyboard::LogKeyboardControlEvent(keyboard::KEYBOARD_CONTROL_SHOW);
 506
 507   weak_factory_.InvalidateWeakPtrs();
 508
 509   // If |container_| has hide animation, its visibility is set to false when
 510   // hide animation finished. So even if the container is visible at this
 511   // point, it may in the process of hiding. We still need to show keyboard
 512   // container in this case.
 513   if (container_->IsVisible() &&
 514       !container_->layer()->GetAnimator()->is_animating())
 515     return;
 516
 517   ToggleTouchEventLogging(false);
 518   ui::LayerAnimator* container_animator = container_->layer()->GetAnimator();
 519
 520   // If the container is not animating, makes sure the position and opacity
 521   // are at begin states for animation.
 522   if (!container_animator->is_animating()) {
 523     gfx::Transform transform;
 524     transform.Translate(0, kAnimationDistance);
 525     container_->SetTransform(transform);
 526     container_->layer()->SetOpacity(kAnimationStartOrAfterHideOpacity);
 527   }
 528
 529   container_animator->set_preemption_strategy(
 530       ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
 531   animation_observer_.reset(new CallbackAnimationObserver(
 532       container_animator,
 533       base::Bind(&KeyboardController::ShowAnimationFinished,
 534                  base::Unretained(this))));
 535   container_animator->AddObserver(animation_observer_.get());
 536
 537   proxy_->ShowKeyboardContainer(container_.get());
 538
 539   {
 540     // Scope the following animation settings as we don't want to animate
 541     // visibility change that triggered by a call to the base class function
 542     // ShowKeyboardContainer with these settings. The container should become
 543     // visible immediately.
 544     ui::ScopedLayerAnimationSettings settings(container_animator);
 545     settings.SetTweenType(gfx::Tween::LINEAR_OUT_SLOW_IN);
 546     settings.SetTransitionDuration(
 547         base::TimeDelta::FromMilliseconds(kShowAnimationDurationMs));
 548     container_->SetTransform(gfx::Transform());
 549     container_->layer()->SetOpacity(1.0);
 550   }
 551 }
 552
 553 void KeyboardController::ResetWindowInsets() {
 554   const gfx::Insets insets;
 555   scoped_ptr<content::RenderWidgetHostIterator> widgets(
 556       content::RenderWidgetHost::GetRenderWidgetHosts());
 557   while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
 558     content::RenderWidgetHostView* view = widget->GetView();
 559     if (view)
 560       view->SetInsets(insets);
 561   }
 562   window_bounds_observer_->RemoveAllObservedWindows();
 563 }
 564
 565 bool KeyboardController::WillHideKeyboard() const {
 566   return weak_factory_.HasWeakPtrs();
 567 }
 568
 569 void KeyboardController::ShowAnimationFinished() {
 570   // Notify observers after animation finished to prevent reveal desktop
 571   // background during animation.
 572   NotifyKeyboardBoundsChanging(proxy_->GetKeyboardWindow()->bounds());
 573   proxy_->EnsureCaretInWorkArea();
 574 }
 575
 576 void KeyboardController::HideAnimationFinished() {
 577   proxy_->HideKeyboardContainer(container_.get());
 578 }
 579
 580 void KeyboardController::AddBoundsChangedObserver(aura::Window* window) {
 581   aura::Window* target_window = GetFrameWindow(window);
 582   if (target_window)
 583     window_bounds_observer_->AddObservedWindow(target_window);
 584 }
 585
 586 }  // namespace keyboard