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keyboard_controller.cc
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keyboard_controller.cc
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/keyboard/keyboard_controller.h"
#include <set>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/macros.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/stl_util.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/env.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/aura/window_observer.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/hit_test.h"
#include "ui/base/ime/input_method.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/base/ime/text_input_flags.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/display/types/display_constants.h"
#include "ui/events/base_event_utils.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/vector2d.h"
#include "ui/keyboard/container_floating_behavior.h"
#include "ui/keyboard/container_full_width_behavior.h"
#include "ui/keyboard/container_fullscreen_behavior.h"
#include "ui/keyboard/display_util.h"
#include "ui/keyboard/keyboard_controller_observer.h"
#include "ui/keyboard/keyboard_layout_manager.h"
#include "ui/keyboard/keyboard_ui.h"
#include "ui/keyboard/keyboard_ui_factory.h"
#include "ui/keyboard/keyboard_util.h"
#include "ui/keyboard/notification_manager.h"
#include "ui/keyboard/public/keyboard_switches.h"
#include "ui/keyboard/queued_container_type.h"
#include "ui/keyboard/queued_display_change.h"
#include "ui/keyboard/shaped_window_targeter.h"
#include "ui/ozone/public/input_controller.h"
#include "ui/ozone/public/ozone_platform.h"
#include "ui/wm/core/window_animations.h"
namespace keyboard {
namespace {
// Owned by ash::Shell.
KeyboardController* g_keyboard_controller = nullptr;
// How long the keyboard stays in WILL_HIDE state before moving to HIDDEN.
constexpr base::TimeDelta kHideKeyboardDelay =
base::TimeDelta::FromMilliseconds(100);
// Reports an error histogram if the keyboard state is lingering in an
// intermediate state for more than 5 seconds.
constexpr base::TimeDelta kReportLingeringStateDelay =
base::TimeDelta::FromMilliseconds(5000);
// Delay threshold after the keyboard enters the WILL_HIDE state. If text focus
// is regained during this threshold, the keyboard will show again, even if it
// is an asynchronous event. This is for the benefit of things like login flow
// where the password field may get text focus after an animation that plays
// after the user enters their username.
constexpr base::TimeDelta kTransientBlurThreshold =
base::TimeDelta::FromMilliseconds(3500);
// State transition diagram (document linked from crbug.com/719905)
bool IsAllowedStateTransition(KeyboardControllerState from,
KeyboardControllerState to) {
static const std::set<
std::pair<KeyboardControllerState, KeyboardControllerState>>
kAllowedStateTransition = {
// The initial ShowKeyboard scenario
// INITIAL -> LOADING_EXTENSION -> HIDDEN -> SHOWN.
{KeyboardControllerState::UNKNOWN, KeyboardControllerState::INITIAL},
{KeyboardControllerState::INITIAL,
KeyboardControllerState::LOADING_EXTENSION},
{KeyboardControllerState::LOADING_EXTENSION,
KeyboardControllerState::HIDDEN},
{KeyboardControllerState::HIDDEN, KeyboardControllerState::SHOWN},
// Hide scenario
// SHOWN -> WILL_HIDE -> HIDDEN.
{KeyboardControllerState::SHOWN, KeyboardControllerState::WILL_HIDE},
{KeyboardControllerState::WILL_HIDE, KeyboardControllerState::HIDDEN},
// Focus transition scenario
// SHOWN -> WILL_HIDE -> SHOWN.
{KeyboardControllerState::WILL_HIDE, KeyboardControllerState::SHOWN},
// HideKeyboard can be called at anytime for example on shutdown.
{KeyboardControllerState::SHOWN, KeyboardControllerState::HIDDEN},
// Return to INITIAL when keyboard is disabled.
{KeyboardControllerState::LOADING_EXTENSION,
KeyboardControllerState::INITIAL},
{KeyboardControllerState::HIDDEN, KeyboardControllerState::INITIAL},
};
return kAllowedStateTransition.count(std::make_pair(from, to)) == 1;
}
void SetTouchEventLogging(bool enable) {
// TODO(moshayedi): crbug.com/642863. Revisit when we have mojo interface for
// InputController for processes that aren't mus-ws.
if (aura::Env::GetInstance()->mode() == aura::Env::Mode::MUS)
return;
ui::InputController* controller =
ui::OzonePlatform::GetInstance()->GetInputController();
if (controller)
controller->SetTouchEventLoggingEnabled(enable);
}
std::string StateToStr(KeyboardControllerState state) {
switch (state) {
case KeyboardControllerState::UNKNOWN:
return "UNKNOWN";
case KeyboardControllerState::SHOWN:
return "SHOWN";
case KeyboardControllerState::LOADING_EXTENSION:
return "LOADING_EXTENSION";
case KeyboardControllerState::WILL_HIDE:
return "WILL_HIDE";
case KeyboardControllerState::HIDDEN:
return "HIDDEN";
case KeyboardControllerState::INITIAL:
return "INITIAL";
case KeyboardControllerState::COUNT:
NOTREACHED();
}
NOTREACHED() << "Unknownstate: " << static_cast<int>(state);
// Needed for windows build.
return "";
}
// An enumeration of different keyboard control events that should be logged.
enum KeyboardControlEvent {
KEYBOARD_CONTROL_SHOW = 0,
KEYBOARD_CONTROL_HIDE_AUTO,
KEYBOARD_CONTROL_HIDE_USER,
KEYBOARD_CONTROL_MAX,
};
void LogKeyboardControlEvent(KeyboardControlEvent event) {
UMA_HISTOGRAM_ENUMERATION("VirtualKeyboard.KeyboardControlEvent", event,
KEYBOARD_CONTROL_MAX);
}
class InputMethodKeyboardController : public ui::InputMethodKeyboardController {
public:
explicit InputMethodKeyboardController(
KeyboardController* keyboard_controller)
: keyboard_controller_(keyboard_controller) {}
~InputMethodKeyboardController() override = default;
// ui::InputMethodKeyboardController
bool DisplayVirtualKeyboard() override {
// Calling |ShowKeyboardInternal| may move the keyboard to another display.
if (keyboard_controller_->IsEnabled() &&
!keyboard_controller_->keyboard_locked()) {
keyboard_controller_->ShowKeyboard(false /* locked */);
return true;
}
return false;
}
void DismissVirtualKeyboard() override {
keyboard_controller_->HideKeyboardByUser();
}
void AddObserver(
ui::InputMethodKeyboardControllerObserver* observer) override {
// TODO: Implement.
}
void RemoveObserver(
ui::InputMethodKeyboardControllerObserver* observer) override {
// TODO: Implement.
}
bool IsKeyboardVisible() override {
return keyboard_controller_->IsKeyboardVisible();
}
private:
KeyboardController* keyboard_controller_;
};
} // namespace
// Observer for both keyboard show and hide animations. It should be owned by
// KeyboardController.
class CallbackAnimationObserver : public ui::ImplicitAnimationObserver {
public:
CallbackAnimationObserver(base::OnceClosure callback)
: callback_(std::move(callback)) {}
private:
// ui::ImplicitAnimationObserver:
void OnImplicitAnimationsCompleted() override {
if (WasAnimationAbortedForProperty(ui::LayerAnimationElement::TRANSFORM) ||
WasAnimationAbortedForProperty(ui::LayerAnimationElement::OPACITY)) {
return;
}
DCHECK(
WasAnimationCompletedForProperty(ui::LayerAnimationElement::TRANSFORM));
DCHECK(
WasAnimationCompletedForProperty(ui::LayerAnimationElement::OPACITY));
std::move(callback_).Run();
}
base::OnceClosure callback_;
DISALLOW_COPY_AND_ASSIGN(CallbackAnimationObserver);
};
KeyboardController::KeyboardController()
: input_method_keyboard_controller_(
std::make_unique<InputMethodKeyboardController>(this)),
ime_observer_(this),
weak_factory_report_lingering_state_(this),
weak_factory_will_hide_(this) {
DCHECK_EQ(g_keyboard_controller, nullptr);
g_keyboard_controller = this;
}
KeyboardController::~KeyboardController() {
DCHECK(g_keyboard_controller);
DCHECK(!ui_)
<< "Keyboard UI must be destroyed before KeyboardController is destroyed";
g_keyboard_controller = nullptr;
}
// static
KeyboardController* KeyboardController::Get() {
DCHECK(g_keyboard_controller);
return g_keyboard_controller;
}
// static
bool KeyboardController::HasInstance() {
return g_keyboard_controller;
}
void KeyboardController::Initialize(
std::unique_ptr<KeyboardUIFactory> ui_factory,
KeyboardLayoutDelegate* layout_delegate) {
DCHECK(ui_factory);
DCHECK(layout_delegate);
ui_factory_ = std::move(ui_factory);
layout_delegate_ = layout_delegate;
DCHECK(!IsKeyboardEnableRequested());
}
void KeyboardController::Shutdown() {
keyboard_enable_flags_.clear();
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardEnableFlagsChanged(keyboard_enable_flags_);
DCHECK(!IsKeyboardEnableRequested());
DisableKeyboard();
}
void KeyboardController::EnableKeyboard() {
if (ui_)
return;
ui_ = ui_factory_->CreateKeyboardUI();
DCHECK(ui_);
show_on_keyboard_window_load_ = false;
keyboard_locked_ = false;
state_ = KeyboardControllerState::UNKNOWN;
ui_->SetController(this);
SetContainerBehaviorInternal(mojom::ContainerType::kFullWidth);
ChangeState(KeyboardControllerState::INITIAL);
visual_bounds_in_screen_ = gfx::Rect();
time_of_last_blur_ = base::Time::UnixEpoch();
UpdateInputMethodObserver();
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardEnabledChanged(true);
ActivateKeyboardInContainer(
layout_delegate_->GetContainerForDefaultDisplay());
// Start preloading the virtual keyboard UI in the background, so that it
// shows up faster when needed.
LoadKeyboardWindowInBackground();
}
void KeyboardController::DisableKeyboard() {
if (!ui_)
return;
if (parent_container_)
DeactivateKeyboard();
aura::Window* keyboard_window = GetKeyboardWindow();
if (keyboard_window)
keyboard_window->RemoveObserver(this);
// Return to the INITIAL state to ensure that transitions entering a state
// is equal to transitions leaving the state.
if (state_ != KeyboardControllerState::INITIAL)
ChangeState(KeyboardControllerState::INITIAL);
// TODO(https://crbug.com/731537): Move KeyboardController members into a
// subobject so we can just put this code into the subobject destructor.
queued_display_change_.reset();
queued_container_type_.reset();
container_behavior_.reset();
animation_observer_.reset();
ime_observer_.RemoveAll();
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardEnabledChanged(false);
ui_->SetController(nullptr);
ui_.reset();
}
void KeyboardController::ActivateKeyboardInContainer(aura::Window* parent) {
DCHECK(parent);
DCHECK(!parent_container_);
parent_container_ = parent;
// Observe changes to root window bounds.
parent_container_->GetRootWindow()->AddObserver(this);
UpdateInputMethodObserver();
if (GetKeyboardWindow()) {
DCHECK(!GetKeyboardWindow()->parent());
parent_container_->AddChild(GetKeyboardWindow());
}
}
void KeyboardController::DeactivateKeyboard() {
DCHECK(parent_container_);
// Ensure the keyboard is not visible before deactivating it.
HideKeyboardExplicitlyBySystem();
aura::Window* keyboard_window = GetKeyboardWindow();
if (keyboard_window) {
keyboard_window->RemovePreTargetHandler(&event_filter_);
if (keyboard_window->parent()) {
DCHECK_EQ(parent_container_, keyboard_window->parent());
parent_container_->RemoveChild(keyboard_window);
}
}
parent_container_->GetRootWindow()->RemoveObserver(this);
parent_container_ = nullptr;
}
aura::Window* KeyboardController::GetKeyboardWindow() const {
return ui_ ? ui_->GetKeyboardWindow() : nullptr;
}
aura::Window* KeyboardController::GetRootWindow() {
return parent_container_ ? parent_container_->GetRootWindow() : nullptr;
}
void KeyboardController::MoveToParentContainer(aura::Window* parent) {
DCHECK(parent);
if (parent_container_ == parent)
return;
TRACE_EVENT0("vk", "MoveKeyboardToDisplayInternal");
DeactivateKeyboard();
ActivateKeyboardInContainer(parent);
}
// private
void KeyboardController::NotifyKeyboardBoundsChanging(
const gfx::Rect& new_bounds) {
visual_bounds_in_screen_ = new_bounds;
aura::Window* window = GetKeyboardWindow();
if (window && window->IsVisible()) {
const gfx::Rect occluded_bounds_in_screen = GetWorkspaceOccludedBounds();
notification_manager_.SendNotifications(
container_behavior_->OccludedBoundsAffectWorkspaceLayout(), new_bounds,
occluded_bounds_in_screen, observer_list_);
} else {
visual_bounds_in_screen_ = gfx::Rect();
}
EnsureCaretInWorkArea(GetWorkspaceOccludedBounds());
}
void KeyboardController::SetKeyboardWindowBounds(const gfx::Rect& new_bounds) {
ui::LayerAnimator* animator = GetKeyboardWindow()->layer()->GetAnimator();
// Stops previous animation if a window resize is requested during animation.
if (animator->is_animating())
animator->StopAnimating();
GetKeyboardWindow()->SetBounds(new_bounds);
}
void KeyboardController::NotifyKeyboardWindowLoaded() {
const bool should_show = show_on_keyboard_window_load_;
if (state_ == KeyboardControllerState::LOADING_EXTENSION)
ChangeState(KeyboardControllerState::HIDDEN);
if (should_show) {
// The window height is set to 0 initially or before switch to an IME in a
// different extension. Virtual keyboard window may wait for this bounds
// change to correctly animate in.
if (keyboard_locked_) {
// Do not move the keyboard to another display after switch to an IME in
// a different extension.
ShowKeyboardInDisplay(
display_util_.GetNearestDisplayToWindow(GetKeyboardWindow()));
} else {
ShowKeyboard(false /* lock */);
}
}
}
void KeyboardController::Reload() {
if (!GetKeyboardWindow())
return;
ui_->ReloadKeyboardIfNeeded();
}
void KeyboardController::RebuildKeyboardIfEnabled() {
if (!IsEnabled())
return;
DisableKeyboard();
EnableKeyboard();
}
void KeyboardController::AddObserver(KeyboardControllerObserver* observer) {
observer_list_.AddObserver(observer);
}
bool KeyboardController::HasObserver(
KeyboardControllerObserver* observer) const {
return observer_list_.HasObserver(observer);
}
void KeyboardController::RemoveObserver(KeyboardControllerObserver* observer) {
observer_list_.RemoveObserver(observer);
}
bool KeyboardController::UpdateKeyboardConfig(
const mojom::KeyboardConfig& config) {
if (config.Equals(keyboard_config_))
return false;
keyboard_config_ = config;
if (IsEnabled())
NotifyKeyboardConfigChanged();
return true;
}
void KeyboardController::SetEnableFlag(mojom::KeyboardEnableFlag flag) {
if (!base::ContainsKey(keyboard_enable_flags_, flag))
keyboard_enable_flags_.insert(flag);
// If there is a flag that is mutually exclusive with |flag|, clear it.
using mojom::KeyboardEnableFlag;
switch (flag) {
case KeyboardEnableFlag::kPolicyEnabled:
keyboard_enable_flags_.erase(KeyboardEnableFlag::kPolicyDisabled);
break;
case KeyboardEnableFlag::kPolicyDisabled:
keyboard_enable_flags_.erase(KeyboardEnableFlag::kPolicyEnabled);
break;
case KeyboardEnableFlag::kExtensionEnabled:
keyboard_enable_flags_.erase(KeyboardEnableFlag::kExtensionDisabled);
break;
case KeyboardEnableFlag::kExtensionDisabled:
keyboard_enable_flags_.erase(KeyboardEnableFlag::kExtensionEnabled);
break;
default:
break;
}
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardEnableFlagsChanged(keyboard_enable_flags_);
if (IsKeyboardEnableRequested() && !IsEnabled())
EnableKeyboard();
else if (!IsKeyboardEnableRequested() && IsEnabled())
DisableKeyboard();
}
void KeyboardController::ClearEnableFlag(mojom::KeyboardEnableFlag flag) {
if (!IsEnableFlagSet(flag))
return;
keyboard_enable_flags_.erase(flag);
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardEnableFlagsChanged(keyboard_enable_flags_);
if (IsKeyboardEnableRequested() && !IsEnabled())
EnableKeyboard();
else if (!IsKeyboardEnableRequested() && IsEnabled())
DisableKeyboard();
}
bool KeyboardController::IsEnableFlagSet(mojom::KeyboardEnableFlag flag) const {
return base::ContainsKey(keyboard_enable_flags_, flag);
}
bool KeyboardController::IsKeyboardEnableRequested() const {
using mojom::KeyboardEnableFlag;
// Accessibility setting prioritized over policy/arc overrides.
if (IsEnableFlagSet(KeyboardEnableFlag::kAccessibilityEnabled))
return true;
// Keyboard can be enabled temporarily by the shelf.
if (IsEnableFlagSet(KeyboardEnableFlag::kShelfEnabled))
return true;
if (IsEnableFlagSet(KeyboardEnableFlag::kAndroidDisabled) ||
IsEnableFlagSet(KeyboardEnableFlag::kPolicyDisabled)) {
return false;
}
if (IsEnableFlagSet(KeyboardEnableFlag::kPolicyEnabled))
return true;
// Command line overrides extension and touch enabled flags.
if (IsEnableFlagSet(KeyboardEnableFlag::kCommandLineEnabled))
return true;
if (IsEnableFlagSet(KeyboardEnableFlag::kExtensionDisabled))
return false;
return IsEnableFlagSet(KeyboardEnableFlag::kExtensionEnabled) ||
IsEnableFlagSet(KeyboardEnableFlag::kTouchEnabled);
}
bool KeyboardController::IsKeyboardOverscrollEnabled() const {
if (!IsEnabled())
return false;
// Users of the sticky accessibility on-screen keyboard are likely to be using
// mouse input, which may interfere with overscrolling.
if (IsEnabled() && !IsOverscrollAllowed())
return false;
// If overscroll enabled behavior is set, use it instead. Currently
// login / out-of-box disable keyboard overscroll. http://crbug.com/363635
if (keyboard_config_.overscroll_behavior !=
mojom::KeyboardOverscrollBehavior::kDefault) {
return keyboard_config_.overscroll_behavior ==
mojom::KeyboardOverscrollBehavior::kEnabled;
}
return !base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableVirtualKeyboardOverscroll);
}
// private
void KeyboardController::HideKeyboard(HideReason reason) {
TRACE_EVENT0("vk", "HideKeyboard");
switch (state_) {
case KeyboardControllerState::UNKNOWN:
case KeyboardControllerState::INITIAL:
case KeyboardControllerState::HIDDEN:
return;
case KeyboardControllerState::LOADING_EXTENSION:
show_on_keyboard_window_load_ = false;
return;
case KeyboardControllerState::WILL_HIDE:
case KeyboardControllerState::SHOWN: {
SetTouchEventLogging(true /* enable */);
// Log whether this was a user or system (automatic) action.
switch (reason) {
case HIDE_REASON_SYSTEM_EXPLICIT:
case HIDE_REASON_SYSTEM_IMPLICIT:
case HIDE_REASON_SYSTEM_TEMPORARY:
LogKeyboardControlEvent(KEYBOARD_CONTROL_HIDE_AUTO);
break;
case HIDE_REASON_USER_EXPLICIT:
case HIDE_REASON_USER_IMPLICIT:
LogKeyboardControlEvent(KEYBOARD_CONTROL_HIDE_USER);
break;
}
// Decide whether regaining focus in a web-based text field should cause
// the keyboard to come back.
switch (reason) {
case HIDE_REASON_SYSTEM_IMPLICIT:
time_of_last_blur_ = base::Time::Now();
break;
case HIDE_REASON_SYSTEM_TEMPORARY:
case HIDE_REASON_SYSTEM_EXPLICIT:
case HIDE_REASON_USER_EXPLICIT:
case HIDE_REASON_USER_IMPLICIT:
time_of_last_blur_ = base::Time::UnixEpoch();
break;
}
NotifyKeyboardBoundsChanging(gfx::Rect());
set_keyboard_locked(false);
aura::Window* window = GetKeyboardWindow();
DCHECK(window);
animation_observer_ = std::make_unique<CallbackAnimationObserver>(
base::BindOnce(&KeyboardController::HideAnimationFinished,
base::Unretained(this)));
ui::ScopedLayerAnimationSettings layer_animation_settings(
window->layer()->GetAnimator());
layer_animation_settings.AddObserver(animation_observer_.get());
{
// Scoped settings go into effect when scope ends.
::wm::ScopedHidingAnimationSettings hiding_settings(window);
container_behavior_->DoHidingAnimation(window, &hiding_settings);
}
ui_->HideKeyboardWindow();
ChangeState(KeyboardControllerState::HIDDEN);
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardHidden(reason == HIDE_REASON_SYSTEM_TEMPORARY);
break;
}
case KeyboardControllerState::COUNT:
NOTREACHED();
}
}
void KeyboardController::HideKeyboardByUser() {
HideKeyboard(HIDE_REASON_USER_EXPLICIT);
}
void KeyboardController::HideKeyboardImplicitlyByUser() {
if (!keyboard_locked_)
HideKeyboard(HIDE_REASON_USER_IMPLICIT);
}
void KeyboardController::HideKeyboardTemporarilyForTransition() {
HideKeyboard(HIDE_REASON_SYSTEM_TEMPORARY);
}
void KeyboardController::HideKeyboardExplicitlyBySystem() {
HideKeyboard(HIDE_REASON_SYSTEM_EXPLICIT);
}
void KeyboardController::HideKeyboardImplicitlyBySystem() {
if (state_ != KeyboardControllerState::SHOWN || keyboard_locked_)
return;
ChangeState(KeyboardControllerState::WILL_HIDE);
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&KeyboardController::HideKeyboard,
weak_factory_will_hide_.GetWeakPtr(),
HIDE_REASON_SYSTEM_IMPLICIT),
kHideKeyboardDelay);
}
// private
void KeyboardController::HideAnimationFinished() {
if (state_ == KeyboardControllerState::HIDDEN) {
if (queued_container_type_) {
SetContainerBehaviorInternal(queued_container_type_->container_type());
// The position of the container window will be adjusted shortly in
// |PopulateKeyboardContent| before showing animation, so we can set the
// passed bounds directly.
if (queued_container_type_->target_bounds())
SetKeyboardWindowBounds(
queued_container_type_->target_bounds().value());
ShowKeyboard(false /* lock */);
}
if (queued_display_change_) {
ShowKeyboardInDisplay(queued_display_change_->new_display());
SetKeyboardWindowBounds(queued_display_change_->new_bounds_in_local());
queued_display_change_ = nullptr;
}
}
}
// private
void KeyboardController::ShowAnimationFinished() {
MarkKeyboardLoadFinished();
// Notify observers after animation finished to prevent reveal desktop
// background during animation.
NotifyKeyboardBoundsChanging(GetKeyboardWindow()->bounds());
}
// private
void KeyboardController::SetContainerBehaviorInternal(
mojom::ContainerType type) {
// Reset the hit test event targeter because the hit test bounds will
// be wrong when container type changes and may cause the UI to be unusable.
if (GetKeyboardWindow())
GetKeyboardWindow()->SetEventTargeter(nullptr);
switch (type) {
case mojom::ContainerType::kFullWidth:
container_behavior_ = std::make_unique<ContainerFullWidthBehavior>(this);
break;
case mojom::ContainerType::kFloating:
container_behavior_ = std::make_unique<ContainerFloatingBehavior>(this);
break;
case mojom::ContainerType::kFullscreen:
container_behavior_ = std::make_unique<ContainerFullscreenBehavior>(this);
break;
default:
NOTREACHED();
}
}
void KeyboardController::ShowKeyboard(bool lock) {
DVLOG(1) << "ShowKeyboard";
set_keyboard_locked(lock);
ShowKeyboardInternal(layout_delegate_->GetContainerForDefaultDisplay());
}
void KeyboardController::ShowKeyboardInDisplay(
const display::Display& display) {
DVLOG(1) << "ShowKeyboardInDisplay: " << display.id();
set_keyboard_locked(true);
ShowKeyboardInternal(layout_delegate_->GetContainerForDisplay(display));
}
void KeyboardController::LoadKeyboardWindowInBackground() {
DCHECK_EQ(state_, KeyboardControllerState::INITIAL);
TRACE_EVENT0("vk", "LoadKeyboardWindowInBackground");
// For now, using Unretained is safe here because the |ui_| is owned by
// |this| and the callback does not outlive |ui_|.
// TODO(https://crbug.com/845780): Use a weak ptr here in case this
// assumption changes.
DVLOG(1) << "LoadKeyboardWindow";
aura::Window* keyboard_window = ui_->LoadKeyboardWindow(base::BindOnce(
&KeyboardController::NotifyKeyboardWindowLoaded, base::Unretained(this)));
keyboard_window->AddPreTargetHandler(&event_filter_);
keyboard_window->AddObserver(this);
parent_container_->AddChild(keyboard_window);
ChangeState(KeyboardControllerState::LOADING_EXTENSION);
}
ui::InputMethod* KeyboardController::GetInputMethodForTest() {
return ui_->GetInputMethod();
}
void KeyboardController::EnsureCaretInWorkAreaForTest(
const gfx::Rect& occluded_bounds) {
EnsureCaretInWorkArea(occluded_bounds);
}
// ContainerBehavior::Delegate overrides
bool KeyboardController::IsKeyboardLocked() const {
return keyboard_locked_;
}
gfx::Rect KeyboardController::GetBoundsInScreen() const {
return GetKeyboardWindow()->GetBoundsInScreen();
}
void KeyboardController::MoveKeyboardWindow(const gfx::Rect& new_bounds) {
DCHECK(IsKeyboardVisible());
SetKeyboardWindowBounds(new_bounds);
}
void KeyboardController::MoveKeyboardWindowToDisplay(
const display::Display& display,
const gfx::Rect& new_bounds) {
queued_display_change_ =
std::make_unique<QueuedDisplayChange>(display, new_bounds);
HideKeyboardTemporarilyForTransition();
}
// aura::WindowObserver overrides
void KeyboardController::OnWindowAddedToRootWindow(aura::Window* window) {
container_behavior_->SetCanonicalBounds(GetKeyboardWindow(),
GetRootWindow()->bounds());
}
void KeyboardController::OnWindowBoundsChanged(
aura::Window* window,
const gfx::Rect& old_bounds,
const gfx::Rect& new_bounds,
ui::PropertyChangeReason reason) {
if (!GetKeyboardWindow())
return;
// |window| could be the root window (for detecting screen rotations) or the
// keyboard window (for detecting keyboard bounds changes). For the root
// window, |new_bounds| is in screen coordinates. For the keyboard window,
// |new_bounds| is also in screen coordinates because VK container has
// kUsesScreenCoordinatesKey set.
if (window == GetRootWindow())
container_behavior_->SetCanonicalBounds(GetKeyboardWindow(), new_bounds);
else if (window == GetKeyboardWindow())
NotifyKeyboardBoundsChanging(new_bounds);
}
// InputMethodObserver overrides
void KeyboardController::OnInputMethodDestroyed(
const ui::InputMethod* input_method) {
ime_observer_.RemoveAll();
OnTextInputStateChanged(nullptr);
}
void KeyboardController::OnTextInputStateChanged(
const ui::TextInputClient* client) {
TRACE_EVENT0("vk", "OnTextInputStateChanged");
bool focused =
client && (client->GetTextInputType() != ui::TEXT_INPUT_TYPE_NONE &&
client->GetTextInputMode() != ui::TEXT_INPUT_MODE_NONE);
bool should_hide = !focused && container_behavior_->TextBlurHidesKeyboard();
bool is_web =
client && client->GetTextInputFlags() != ui::TEXT_INPUT_FLAG_NONE;
if (should_hide) {
switch (state_) {
case KeyboardControllerState::LOADING_EXTENSION:
show_on_keyboard_window_load_ = false;
return;
case KeyboardControllerState::SHOWN:
HideKeyboardImplicitlyBySystem();
return;
default:
return;
}
} else {
switch (state_) {
case KeyboardControllerState::WILL_HIDE:
// Abort a pending keyboard hide.
ChangeState(KeyboardControllerState::SHOWN);
return;
case KeyboardControllerState::HIDDEN:
if (focused && is_web)
ShowKeyboardIfWithinTransientBlurThreshold();
return;
default:
break;
}
// Do not explicitly show the Virtual keyboard unless it is in the process
// of hiding or the hide duration was very short (transient blur). Instead,
// the virtual keyboard is shown in response to a user gesture (mouse or
// touch) that is received while an element has input focus. Showing the
// keyboard requires an explicit call to OnShowVirtualKeyboardIfEnabled.
}
}
void KeyboardController::ShowKeyboardIfWithinTransientBlurThreshold() {
if (base::Time::Now() - time_of_last_blur_ < kTransientBlurThreshold)
ShowKeyboard(false);
}
void KeyboardController::OnShowVirtualKeyboardIfEnabled() {
DVLOG(1) << "OnShowVirtualKeyboardIfEnabled: " << IsEnabled();
// Calling |ShowKeyboardInternal| may move the keyboard to another display.
if (IsEnabled() && !keyboard_locked_)
ShowKeyboardInternal(layout_delegate_->GetContainerForDefaultDisplay());
}
void KeyboardController::ShowKeyboardInternal(aura::Window* target_container) {
MarkKeyboardLoadStarted();
PopulateKeyboardContent(target_container);
UpdateInputMethodObserver();
}
void KeyboardController::PopulateKeyboardContent(
aura::Window* target_container) {
DCHECK_NE(state_, KeyboardControllerState::INITIAL);
DVLOG(1) << "PopulateKeyboardContent: " << StateToStr(state_);
TRACE_EVENT0("vk", "PopulateKeyboardContent");
MoveToParentContainer(target_container);
aura::Window* keyboard_window = GetKeyboardWindow();
DCHECK(keyboard_window);
DCHECK_EQ(parent_container_, keyboard_window->parent());
switch (state_) {
case KeyboardControllerState::SHOWN:
return;
case KeyboardControllerState::LOADING_EXTENSION:
show_on_keyboard_window_load_ = true;
return;
default:
break;
}
ui_->ReloadKeyboardIfNeeded();
SetTouchEventLogging(false /* enable */);
switch (state_) {
case KeyboardControllerState::WILL_HIDE:
ChangeState(KeyboardControllerState::SHOWN);
return;
default:
break;
}
DCHECK_EQ(state_, KeyboardControllerState::HIDDEN);
// If the container is not animating, makes sure the position and opacity
// are at begin states for animation.
container_behavior_->InitializeShowAnimationStartingState(keyboard_window);
LogKeyboardControlEvent(KEYBOARD_CONTROL_SHOW);
RecordUkmKeyboardShown();
ui::LayerAnimator* container_animator =
keyboard_window->layer()->GetAnimator();
container_animator->set_preemption_strategy(
ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
ui_->ShowKeyboardWindow();
animation_observer_ =
std::make_unique<CallbackAnimationObserver>(base::BindOnce(
&KeyboardController::ShowAnimationFinished, base::Unretained(this)));
ui::ScopedLayerAnimationSettings settings(container_animator);
settings.AddObserver(animation_observer_.get());
container_behavior_->DoShowingAnimation(keyboard_window, &settings);
// the queued container behavior will notify JS to change layout when it
// gets destroyed.
queued_container_type_ = nullptr;
ChangeState(KeyboardControllerState::SHOWN);
UMA_HISTOGRAM_ENUMERATION("InputMethod.VirtualKeyboard.ContainerBehavior",
GetActiveContainerType(),
mojom::ContainerType::kMaxValue);
}
bool KeyboardController::WillHideKeyboard() const {
bool res = weak_factory_will_hide_.HasWeakPtrs();
DCHECK_EQ(res, state_ == KeyboardControllerState::WILL_HIDE);
return res;
}
void KeyboardController::NotifyKeyboardConfigChanged() {
for (KeyboardControllerObserver& observer : observer_list_)
observer.OnKeyboardConfigChanged();
}
void KeyboardController::CheckStateTransition(KeyboardControllerState prev,
KeyboardControllerState next) {
std::stringstream error_message;
const bool valid_transition = IsAllowedStateTransition(prev, next);
if (!valid_transition)
error_message << "Unexpected transition";
// Emit UMA
const int transition_record =
(valid_transition ? 1 : -1) *
(static_cast<int>(prev) * 1000 + static_cast<int>(next));
base::UmaHistogramSparse("VirtualKeyboard.ControllerStateTransition",
transition_record);
UMA_HISTOGRAM_BOOLEAN("VirtualKeyboard.ControllerStateTransitionIsValid",
transition_record > 0);
DCHECK(error_message.str().empty())
<< "State: " << StateToStr(prev) << " -> " << StateToStr(next) << " "
<< error_message.str();
}
void KeyboardController::ChangeState(KeyboardControllerState state) {
CheckStateTransition(state_, state);
if (state_ == state)
return;
state_ = state;
if (state != KeyboardControllerState::WILL_HIDE)
weak_factory_will_hide_.InvalidateWeakPtrs();
if (state != KeyboardControllerState::LOADING_EXTENSION)
show_on_keyboard_window_load_ = false;