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app_list_view.cc
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app_list_view.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/app_list/views/app_list_view.h"
#include <algorithm>
#include <cmath>
#include <string>
#include <utility>
#include <vector>
#include "ash/app_list/app_list_metrics.h"
#include "ash/app_list/app_list_util.h"
#include "ash/app_list/model/app_list_model.h"
#include "ash/app_list/views/app_list_a11y_announcer.h"
#include "ash/app_list/views/app_list_folder_view.h"
#include "ash/app_list/views/app_list_main_view.h"
#include "ash/app_list/views/apps_container_view.h"
#include "ash/app_list/views/contents_view.h"
#include "ash/app_list/views/paged_apps_grid_view.h"
#include "ash/app_list/views/search_box_view.h"
#include "ash/assistant/ui/assistant_ui_constants.h"
#include "ash/constants/ash_features.h"
#include "ash/keyboard/ui/keyboard_ui_controller.h"
#include "ash/public/cpp/app_list/app_list_color_provider.h"
#include "ash/public/cpp/app_list/app_list_config.h"
#include "ash/public/cpp/app_list/app_list_config_provider.h"
#include "ash/public/cpp/app_list/app_list_features.h"
#include "ash/public/cpp/app_list/app_list_types.h"
#include "ash/public/cpp/metrics_util.h"
#include "ash/public/cpp/shell_window_ids.h"
#include "ash/public/cpp/wallpaper/wallpaper_types.h"
#include "ash/shell.h"
#include "ash/wm/work_area_insets.h"
#include "base/bind.h"
#include "base/macros.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/user_metrics.h"
#include "base/strings/string_util.h"
#include "base/trace_event/trace_event.h"
#include "ui/accessibility/aura/aura_window_properties.h"
#include "ui/accessibility/ax_node.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/aura/window.h"
#include "ui/aura/window_targeter.h"
#include "ui/aura/window_tree_host.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/ui_base_switches.h"
#include "ui/compositor/animation_throughput_reporter.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animation_element.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/layer_animation_sequence.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/scoped_animation_duration_scale_mode.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/display/display.h"
#include "ui/display/screen.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/geometry/vector2d.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/interpolated_transform.h"
#include "ui/gfx/skia_util.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/textfield/textfield.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/views_delegate.h"
#include "ui/views/widget/widget.h"
#include "ui/wm/core/coordinate_conversion.h"
#include "ui/wm/core/ime_util_chromeos.h"
#include "ui/wm/core/shadow_types.h"
namespace ash {
namespace {
// Default color for classic, unthemed app list.
constexpr SkColor kAppListBackgroundColor = gfx::kGoogleGrey900;
// The height of the half app list from the bottom of the screen.
constexpr int kHalfAppListHeight = 545;
// The DIP distance from the bezel in which a gesture drag end results in a
// closed app list.
constexpr int kAppListBezelMargin = 50;
// The size of app info dialog in fullscreen app list.
constexpr int kAppInfoDialogWidth = 512;
constexpr int kAppInfoDialogHeight = 384;
// The duration of app list animations when |short_animations_for_testing| are
// enabled.
constexpr int kAppListAnimationDurationImmediateMs = 0;
// Quality of the shield background blur.
constexpr float kAppListBlurQuality = 0.33f;
// Set animation durations to 0 for testing.
// TODO(oshima): Use ui::ScopedAnimationDurationScaleMode instead.
bool short_animations_for_testing;
// Histogram for the app list dragging in clamshell mode.
constexpr char kAppListDragInClamshellHistogram[] =
"Apps.StateTransition.Drag.PresentationTime.ClamshellMode";
constexpr char kAppListDragInClamshellMaxLatencyHistogram[] =
"Apps.StateTransition.Drag.PresentationTime.MaxLatency.ClamshellMode";
// The number of minutes that must pass for the current app list page to reset
// to the first page.
constexpr int kAppListPageResetTimeLimitMinutes = 20;
// When true, immdeidately fires the page reset timer upon starting.
bool skip_page_reset_timer_for_testing = false;
// Returns whether AppList's rounded corners should be hidden based on
// the app list view state and app list view bounds.
bool ShouldHideRoundedCorners(ash::AppListViewState app_list_state,
const gfx::Rect& bounds) {
switch (app_list_state) {
case ash::AppListViewState::kClosed:
return false;
case ash::AppListViewState::kFullscreenAllApps:
case ash::AppListViewState::kFullscreenSearch:
// Hide rounded corners in fullscreen state.
return true;
case ash::AppListViewState::kPeeking:
case ash::AppListViewState::kHalf:
// When the virtual keyboard shows, the AppListView is moved upward to
// avoid the overlapping area with the virtual keyboard. As a result, its
// bottom side may be on the display edge. Stop showing the rounded
// corners under this circumstance.
return bounds.y() == 0;
}
NOTREACHED();
return false;
}
// This view forwards the focus to the search box widget by providing it as a
// FocusTraversable when a focus search is provided.
class SearchBoxFocusHost : public views::View {
public:
explicit SearchBoxFocusHost(views::Widget* search_box_widget)
: search_box_widget_(search_box_widget) {}
~SearchBoxFocusHost() override = default;
views::FocusTraversable* GetFocusTraversable() override {
if (search_box_widget_->IsVisible())
return search_box_widget_;
return nullptr;
}
// views::View:
const char* GetClassName() const override { return "SearchBoxFocusHost"; }
private:
views::Widget* search_box_widget_;
DISALLOW_COPY_AND_ASSIGN(SearchBoxFocusHost);
};
SkColor GetBackgroundShieldColor(const std::vector<SkColor>& colors,
float color_opacity,
bool is_tablet_mode) {
const U8CPU sk_opacity_value = static_cast<U8CPU>(255 * color_opacity);
SkColor default_color =
SkColorSetA(kAppListBackgroundColor, sk_opacity_value);
if (!colors.empty()) {
DCHECK_EQ(static_cast<size_t>(ColorProfileType::NUM_OF_COLOR_PROFILES),
colors.size());
const SkColor dark_muted =
colors[static_cast<int>(ColorProfileType::DARK_MUTED)];
if (SK_ColorTRANSPARENT != dark_muted) {
default_color = SkColorSetA(
color_utils::GetResultingPaintColor(
SkColorSetA(SK_ColorBLACK, AppListView::kAppListColorDarkenAlpha),
dark_muted),
sk_opacity_value);
}
}
return SkColorSetA(AppListColorProvider::Get()->GetAppListBackgroundColor(
is_tablet_mode, default_color),
sk_opacity_value);
}
DEFINE_UI_CLASS_PROPERTY_KEY(bool, kExcludeWindowFromEventHandling, false)
// Gets radius for app list background corners when the app list has the
// provided height. The rounded corner should match the current app list height
// (so the rounded corners bottom edge matches the shelf top), until it reaches
// the app list background radius (i.e. background radius in peeking app list
// state).
// |height|: App list view height, relative to the shelf top (i.e. distance
// between app list top and shelf top edge).
double GetBackgroundRadiusForAppListHeight(double height,
int shelf_background_corner_radius) {
return std::min(static_cast<double>(shelf_background_corner_radius),
std::max(height, 0.));
}
// This targeter prevents routing events to sub-windows, such as
// RenderHostWindow in order to handle events in context of app list.
class AppListEventTargeter : public aura::WindowTargeter {
public:
explicit AppListEventTargeter(AppListViewDelegate* delegate)
: delegate_(delegate) {}
~AppListEventTargeter() override = default;
// aura::WindowTargeter:
bool SubtreeShouldBeExploredForEvent(aura::Window* window,
const ui::LocatedEvent& event) override {
if (delegate_ && !delegate_->CanProcessEventsOnApplistViews())
return false;
if (window->GetProperty(kExcludeWindowFromEventHandling)) {
// Allow routing to sub-windows for ET_MOUSE_MOVED event which is used by
// accessibility to enter the mode of exploration of WebView contents.
if (event.type() != ui::ET_MOUSE_MOVED)
return false;
}
if (window->GetProperty(ash::assistant::ui::kOnlyAllowMouseClickEvents)) {
if (event.type() != ui::ET_MOUSE_PRESSED &&
event.type() != ui::ET_MOUSE_RELEASED) {
return false;
}
}
return aura::WindowTargeter::SubtreeShouldBeExploredForEvent(window, event);
}
private:
AppListViewDelegate* delegate_; // Weak. Owned by AppListService.
DISALLOW_COPY_AND_ASSIGN(AppListEventTargeter);
};
float ComputeSubpixelOffset(const display::Display& display, float value) {
float pixel_position = std::round(display.device_scale_factor() * value);
float dp_position = pixel_position / display.device_scale_factor();
return dp_position - std::floor(value);
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// AppListView::StateAnimationMetricsReporter
class AppListView::StateAnimationMetricsReporter {
public:
StateAnimationMetricsReporter() = default;
StateAnimationMetricsReporter(const StateAnimationMetricsReporter&) = delete;
StateAnimationMetricsReporter& operator=(
const StateAnimationMetricsReporter&) = delete;
~StateAnimationMetricsReporter() = default;
// Sets target state of the transition for metrics.
void SetTargetState(AppListViewState target_state) {
target_state_ = target_state;
}
// Sets tablet animation transition type for metrics.
void SetTabletModeAnimationTransition(
TabletModeAnimationTransition transition) {
tablet_transition_ = transition;
}
// Resets the target state and animation type for metrics.
void Reset();
// Gets a callback to report smoothness.
metrics_util::SmoothnessCallback GetReportCallback(bool tablet_mode) {
if (tablet_mode) {
return base::BindRepeating(
&StateAnimationMetricsReporter::RecordMetricsInTablet,
std::move(tablet_transition_));
}
return base::BindRepeating(
&StateAnimationMetricsReporter::RecordMetricsInClamshell,
std::move(target_state_));
}
private:
static void RecordMetricsInTablet(
absl::optional<TabletModeAnimationTransition> transition,
int value);
static void RecordMetricsInClamshell(
absl::optional<AppListViewState> target_state,
int value);
absl::optional<AppListViewState> target_state_;
absl::optional<TabletModeAnimationTransition> tablet_transition_;
};
void AppListView::StateAnimationMetricsReporter::Reset() {
tablet_transition_.reset();
target_state_.reset();
}
// static
void AppListView::StateAnimationMetricsReporter::RecordMetricsInTablet(
absl::optional<TabletModeAnimationTransition> tablet_transition,
int value) {
UMA_HISTOGRAM_PERCENTAGE("Apps.StateTransition.AnimationSmoothness", value);
// It can't ensure the target transition is properly set. Simply give up
// reporting per-state metrics in that case. See https://crbug.com/954907.
if (!tablet_transition)
return;
switch (*tablet_transition) {
case TabletModeAnimationTransition::kDragReleaseShow:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness.DragReleaseShow",
value);
break;
case TabletModeAnimationTransition::kDragReleaseHide:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness."
"DragReleaseHide",
value);
break;
case TabletModeAnimationTransition::kHomeButtonShow:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness."
"PressAppListButtonShow",
value);
break;
case TabletModeAnimationTransition::kHideHomeLauncherForWindow:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness."
"HideLauncherForWindow",
value);
break;
case TabletModeAnimationTransition::kEnterFullscreenAllApps:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness."
"EnterFullscreenAllApps",
value);
break;
case TabletModeAnimationTransition::kEnterFullscreenSearch:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness."
"EnterFullscreenSearch",
value);
break;
case TabletModeAnimationTransition::kFadeInOverview:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness.FadeInOverview",
value);
break;
case TabletModeAnimationTransition::kFadeOutOverview:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.HomeLauncherTransition.AnimationSmoothness.FadeOutOverview",
value);
break;
}
}
// static
void AppListView::StateAnimationMetricsReporter::RecordMetricsInClamshell(
absl::optional<AppListViewState> target_state,
int value) {
UMA_HISTOGRAM_PERCENTAGE("Apps.StateTransition.AnimationSmoothness", value);
// It can't ensure the target transition is properly set. Simply give up
// reporting per-state metrics in that case. See https://crbug.com/954907.
if (!target_state)
return;
switch (*target_state) {
case AppListViewState::kClosed:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.StateTransition.AnimationSmoothness.Close.ClamshellMode",
value);
break;
case AppListViewState::kPeeking:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.StateTransition.AnimationSmoothness.Peeking.ClamshellMode",
value);
break;
case AppListViewState::kHalf:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.StateTransition.AnimationSmoothness.Half.ClamshellMode", value);
break;
case AppListViewState::kFullscreenAllApps:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.StateTransition.AnimationSmoothness.FullscreenAllApps."
"ClamshellMode",
value);
break;
case AppListViewState::kFullscreenSearch:
UMA_HISTOGRAM_PERCENTAGE(
"Apps.StateTransition.AnimationSmoothness.FullscreenSearch."
"ClamshellMode",
value);
break;
}
}
////////////////////////////////////////////////////////////////////////////////
// An animation observer to notify AppListView when animations for an app list
// view state transition complete. The observer goes through the following
// states:
// 1. kIdle
// 2. kReady, once `Reset()` has been called, and target app list state has been
// set.
// 3. kActive, once `Activate()` has been called.
// 4. kTransitionDone, once `SetTransitionDone()` has been called.
// * `SetTransitionDone()` gets called when observed implicit animation
// complete, but can be called directly if the app list view state is
// updated without animation.
// 5. kIdle, once the app list view has been notified that the transition has
// complete.
//
// Note that 3. and 4. may happen out of order - app list view will only be
// notified of transition completion when both steps are complete. The goal is
// to ensure that state transition notification is not sent out prematurely,
// before the internal app list view state is updated.
class StateTransitionNotifier : public ui::ImplicitAnimationObserver {
public:
explicit StateTransitionNotifier(AppListView* view) : view_(view) {}
~StateTransitionNotifier() override = default;
// Resets the notifier, and set a new target app list state.
void Reset(AppListViewState target_app_list_state) {
StopObservingImplicitAnimations();
state_ = State::kReady;
target_app_list_view_state_ = target_app_list_state;
}
// Activates the notifier - moves the notifier in the state where it can
// notify the app list view of state transition completion.
// NOTE: If the app list state transition has already completed, the app list
// view will get notified immediately.
void Activate() {
DCHECK(target_app_list_view_state_.has_value());
if (state_ == State::kTransitionDone) {
NotifyTransitionCompleted();
return;
}
DCHECK_EQ(state_, State::kReady);
state_ = State::kActive;
}
// Marks the app list view state transition as completed. If the notifier is
// active, it will notify the app list view of the transition completion.
// NOTE: This should be called directly only if the notifier is not added as a
// transition animation observer. If the notifier is observing the animation,
// this method gets called on the animation completion.
void SetTransitionDone() {
DCHECK_NE(state_, State::kTransitionDone);
DCHECK_NE(state_, State::kIdle);
const bool can_notify = state_ == State::kActive;
state_ = State::kTransitionDone;
if (can_notify)
NotifyTransitionCompleted();
}
private:
enum class State { kIdle, kReady, kActive, kTransitionDone };
// Overridden from ui::ImplicitAnimationObserver:
void OnImplicitAnimationsCompleted() override {
StopObservingImplicitAnimations();
TRACE_EVENT_NESTABLE_ASYNC_END1("ui", "AppList::StateTransitionAnimations",
this, "state",
target_app_list_view_state_.value());
SetTransitionDone();
}
void NotifyTransitionCompleted() {
DCHECK_EQ(state_, State::kTransitionDone);
state_ = State::kIdle;
AppListViewState app_list_state = *target_app_list_view_state_;
target_app_list_view_state_ = absl::nullopt;
view_->OnBoundsAnimationCompleted(app_list_state);
}
State state_ = State::kIdle;
AppListView* const view_;
absl::optional<AppListViewState> target_app_list_view_state_;
DISALLOW_COPY_AND_ASSIGN(StateTransitionNotifier);
};
// The view for the app list background shield which changes color and radius.
class AppListBackgroundShieldView : public views::View {
public:
explicit AppListBackgroundShieldView(int shelf_background_corner_radius,
bool is_tablet_mode)
: color_(AppListColorProvider::Get()->GetAppListBackgroundColor(
is_tablet_mode,
/*default_color*/ kAppListBackgroundColor)),
shelf_background_corner_radius_(shelf_background_corner_radius) {
SetPaintToLayer(ui::LAYER_SOLID_COLOR);
layer()->SetFillsBoundsOpaquely(false);
SetBackgroundRadius(shelf_background_corner_radius_);
layer()->SetColor(color_);
layer()->SetName("launcher/BackgroundShield");
}
~AppListBackgroundShieldView() override = default;
void UpdateBackground(bool use_blur) {
if (blur_value_ == use_blur)
return;
blur_value_ = use_blur;
if (use_blur) {
layer()->SetBackgroundBlur(preferred_blur_radius_);
layer()->SetBackdropFilterQuality(kAppListBlurQuality);
} else {
layer()->SetBackgroundBlur(0);
}
}
void UpdatePreferredBlurRadius(double preferred_blur_radius) {
if (preferred_blur_radius_ == preferred_blur_radius)
return;
preferred_blur_radius_ = preferred_blur_radius;
if (blur_value_)
layer()->SetBackgroundBlur(preferred_blur_radius);
}
void UpdateBackgroundRadius(
AppListViewState state,
bool shelf_has_rounded_corners,
absl::optional<base::TimeTicks> animation_end_timestamp) {
const float target_corner_radius =
(state == AppListViewState::kClosed && !shelf_has_rounded_corners)
? 0
: shelf_background_corner_radius_;
if (corner_radius_ == target_corner_radius)
return;
layer()->GetAnimator()->StopAnimatingProperty(
ui::LayerAnimationElement::ROUNDED_CORNERS);
std::unique_ptr<ui::ScopedLayerAnimationSettings> settings;
if (animation_end_timestamp.has_value()) {
settings = std::make_unique<ui::ScopedLayerAnimationSettings>(
layer()->GetAnimator());
settings->SetTransitionDuration((*animation_end_timestamp) -
base::TimeTicks::Now());
settings->SetTweenType(gfx::Tween::EASE_OUT);
settings->SetPreemptionStrategy(
ui::LayerAnimator::IMMEDIATELY_SET_NEW_TARGET);
}
SetBackgroundRadius(target_corner_radius);
}
void SetBackgroundRadius(float corner_radius) {
corner_radius_ = corner_radius;
layer()->SetRoundedCornerRadius({corner_radius, corner_radius, 0, 0});
}
void UpdateColor(SkColor color) {
if (color_ == color)
return;
color_ = color;
layer()->SetColor(color);
}
void UpdateBounds(const gfx::Rect& bounds) {
// Inset bottom by 2 * the background radius to account for the rounded
// corners on the top and bottom of the |app_list_background_shield_|. Only
// add the inset to the bottom to keep padding at the top of the AppList the
// same.
gfx::Rect new_bounds = bounds;
new_bounds.Inset(0, 0, 0, -shelf_background_corner_radius_ * 2);
SetBoundsRect(new_bounds);
}
SkColor GetColorForTest() const { return color_; }
const char* GetClassName() const override {
return "AppListBackgroundShieldView";
}
private:
// Whether the background blur has been set on the background shield.
bool blur_value_ = false;
// The blur radius to use for blur when blur is enabled.
double preferred_blur_radius_ = 0;
float corner_radius_ = 0.0f;
SkColor color_;
int shelf_background_corner_radius_ = 0;
DISALLOW_COPY_AND_ASSIGN(AppListBackgroundShieldView);
};
////////////////////////////////////////////////////////////////////////////////
// AppListView::TestApi
AppListView::TestApi::TestApi(AppListView* view) : view_(view) {
DCHECK(view_);
}
AppListView::TestApi::~TestApi() = default;
AppsGridView* AppListView::TestApi::GetRootAppsGridView() {
return view_->GetRootAppsGridView();
}
////////////////////////////////////////////////////////////////////////////////
// AppListView:
AppListView::AppListView(AppListViewDelegate* delegate)
: delegate_(delegate),
model_(delegate->GetModel()),
search_model_(delegate->GetSearchModel()),
is_background_blur_enabled_(features::IsBackgroundBlurEnabled()),
state_transition_notifier_(
std::make_unique<StateTransitionNotifier>(this)),
state_animation_metrics_reporter_(
std::make_unique<StateAnimationMetricsReporter>()) {
CHECK(delegate);
}
AppListView::~AppListView() {
// Shutdown a11y announcer before the announcement view gets removed.
a11y_announcer_->Shutdown();
// Remove child views first to ensure no remaining dependencies on delegate_.
RemoveAllChildViews(true);
}
// static
void AppListView::ExcludeWindowFromEventHandling(aura::Window* window) {
DCHECK(window);
window->SetProperty(kExcludeWindowFromEventHandling, true);
}
// static
float AppListView::GetTransitionProgressForState(AppListViewState state) {
switch (state) {
case AppListViewState::kClosed:
return 0.0f;
case AppListViewState::kPeeking:
case AppListViewState::kHalf:
return 1.0f;
case AppListViewState::kFullscreenAllApps:
case AppListViewState::kFullscreenSearch:
return 2.0f;
}
NOTREACHED();
return 0.0f;
}
// static
void AppListView::SetShortAnimationForTesting(bool enabled) {
short_animations_for_testing = enabled;
}
// static
bool AppListView::ShortAnimationsForTesting() {
return short_animations_for_testing;
}
// static
void AppListView::SetSkipPageResetTimerForTesting(bool enabled) {
skip_page_reset_timer_for_testing = enabled;
}
void AppListView::InitView(gfx::NativeView parent) {
base::AutoReset<bool> auto_reset(&is_building_, true);
time_shown_ = base::Time::Now();
UpdateAppListConfig(parent);
InitContents();
InitWidget(parent);
InitChildWidget();
}
void AppListView::InitContents() {
DCHECK(!app_list_background_shield_);
DCHECK(!app_list_main_view_);
DCHECK(!search_box_view_);
auto app_list_background_shield =
std::make_unique<AppListBackgroundShieldView>(
delegate_->GetShelfSize() / 2, delegate_->IsInTabletMode());
app_list_background_shield->UpdateBackground(
/*use_blur*/ !delegate_->IsInTabletMode() && is_background_blur_enabled_);
app_list_background_shield->UpdatePreferredBlurRadius(
app_list_config_->blur_radius());
app_list_background_shield_ =
AddChildView(std::move(app_list_background_shield));
a11y_announcer_ = std::make_unique<AppListA11yAnnouncer>(
AddChildView(std::make_unique<views::View>()));
auto app_list_main_view = std::make_unique<AppListMainView>(delegate_, this);
search_box_view_ =
new SearchBoxView(app_list_main_view.get(), delegate_, this);
search_box_view_->set_show_close_button_when_active(true);
search_box_view_->Init();
// Assign |app_list_main_view_| here since it is accessed during Init().
app_list_main_view_ = app_list_main_view.get();
app_list_main_view->Init(0, search_box_view_);
AddChildView(std::move(app_list_main_view));
}
void AppListView::InitWidget(gfx::NativeView parent) {
DCHECK(!GetWidget());
views::Widget::InitParams params(
views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
params.name = "AppList";
params.parent = parent;
params.delegate = this;
params.opacity = views::Widget::InitParams::WindowOpacity::kTranslucent;
params.layer_type = ui::LAYER_NOT_DRAWN;
views::Widget* widget = new views::Widget;
widget->Init(std::move(params));
DCHECK_EQ(widget, GetWidget());
widget->GetNativeWindow()->SetEventTargeter(
std::make_unique<AppListEventTargeter>(delegate_));
// Enable arrow key. Arrow left/right and up/down triggers the same focus
// movement as tab/shift+tab.
SetEnableArrowKeyTraversal(true);
widget->GetNativeView()->AddObserver(this);
// Directs A11y focus ring from search box view to AppListView's descendants
// (like ExpandArrowView) without focusing on the whole app list window when
// using search + arrow button.
search_box_view_->GetViewAccessibility().OverrideNextFocus(GetWidget());
search_box_view_->GetViewAccessibility().OverridePreviousFocus(GetWidget());
}
void AppListView::InitChildWidget() {
// Create a widget for the SearchBoxView to live in. This allows the
// SearchBoxView to be on top of the custom launcher page's WebContents
// (otherwise the search box events will be captured by the WebContents).
views::Widget::InitParams search_box_widget_params(
views::Widget::InitParams::TYPE_CONTROL);
search_box_widget_params.parent = GetWidget()->GetNativeView();
search_box_widget_params.opacity =
views::Widget::InitParams::WindowOpacity::kTranslucent;
search_box_widget_params.name = "SearchBoxView";
// Focus should be able to move from search box to items in app list view.
auto widget_delegate = std::make_unique<views::WidgetDelegate>();
widget_delegate->SetFocusTraversesOut(true);
// Default role of root view is ax::mojom::Role::kWindow which traps
// ChromeVox focus within the root view. Assign ax::mojom::Role::kGroup here
// to allow the focus to move from elements in search box to app list view.
widget_delegate->SetAccessibleRole(ax::mojom::Role::kGroup);
// SearchBoxView used to be a WidgetDelegateView, so we follow the legacy
// behavior and have the Widget delete the delegate.
widget_delegate->SetOwnedByWidget(true);
search_box_widget_params.delegate = widget_delegate.release();
views::Widget* search_box_widget = new views::Widget;
search_box_widget->Init(std::move(search_box_widget_params));
search_box_widget->SetContentsView(search_box_view_);
DCHECK_EQ(search_box_widget, search_box_view_->GetWidget());
// Assign an accessibility role to the native window of |search_box_widget|,
// so that hitting search+right could move ChromeVox focus across search box
// to other elements in app list view.
search_box_widget->GetNativeWindow()->SetProperty(
ui::kAXRoleOverride,
static_cast<ax::mojom::Role>(ax::mojom::Role::kGroup));
// The search box will not naturally receive focus by itself (because it is in
// a separate widget). Create this SearchBoxFocusHost in the main widget to
// forward the focus search into to the search box.
SearchBoxFocusHost* search_box_focus_host =
new SearchBoxFocusHost(search_box_widget);
AddChildView(search_box_focus_host);
search_box_widget->SetFocusTraversableParentView(search_box_focus_host);
search_box_widget->SetFocusTraversableParent(
GetWidget()->GetFocusTraversable());
// Directs A11y focus ring from AppListView's descendants (like
// ExpandArrowView) to search box view without focusing on the whole app list
// window when using search + arrow button.
GetViewAccessibility().OverrideNextFocus(search_box_widget);
GetViewAccessibility().OverridePreviousFocus(search_box_widget);
}
void AppListView::Show(AppListViewState preferred_state, bool is_side_shelf) {
if (!time_shown_.has_value())
time_shown_ = base::Time::Now();
// The opacity of the AppListView may have been manipulated by overview mode,
// so reset it before it is shown.
GetWidget()->GetLayer()->SetOpacity(1.0f);
is_side_shelf_ = is_side_shelf;
AddAccelerator(ui::Accelerator(ui::VKEY_ESCAPE, ui::EF_NONE));
AddAccelerator(ui::Accelerator(ui::VKEY_BROWSER_BACK, ui::EF_NONE));
UpdateWidget();
app_list_main_view_->contents_view()->ResetForShow();
if (!delegate_->IsInTabletMode())
SelectInitialAppsPage();
SetState(preferred_state);
// Ensures that the launcher won't open underneath the a11y keyboard.
CloseKeyboardIfVisible();
OnTabletModeChanged(delegate_->IsInTabletMode());
app_list_main_view_->ShowAppListWhenReady();
UMA_HISTOGRAM_TIMES("Apps.AppListCreationTime",
base::Time::Now() - time_shown_.value());
time_shown_ = absl::nullopt;
RecordFolderMetrics();
}
void AppListView::SetDragAndDropHostOfCurrentAppList(
ApplicationDragAndDropHost* drag_and_drop_host) {
app_list_main_view_->SetDragAndDropHostOfCurrentAppList(drag_and_drop_host);
}
void AppListView::Dismiss() {
CloseKeyboardIfVisible();
delegate_->DismissAppList();
}
void AppListView::CloseOpenedPage() {
if (HandleCloseOpenFolder())
return;
HandleCloseOpenSearchBox();
}
bool AppListView::HandleCloseOpenFolder() {
if (GetAppsContainerView()->IsInFolderView()) {
GetAppsContainerView()->app_list_folder_view()->CloseFolderPage();
return true;
}
return false;
}
bool AppListView::HandleCloseOpenSearchBox() {
if (app_list_main_view_ &&
app_list_main_view_->contents_view()->IsShowingSearchResults()) {
return Back();
}
return false;
}
bool AppListView::Back() {
if (app_list_main_view_)
return app_list_main_view_->contents_view()->Back();
return false;
}
void AppListView::OnPaint(gfx::Canvas* canvas) {
views::WidgetDelegateView::OnPaint(canvas);
}
const char* AppListView::GetClassName() const {
return "AppListView";
}
bool AppListView::AcceleratorPressed(const ui::Accelerator& accelerator) {
switch (accelerator.key_code()) {
case ui::VKEY_ESCAPE:
case ui::VKEY_BROWSER_BACK:
// If the ContentsView does not handle the back action, then this is the
// top level, so we close the app list.
if (!Back() && !delegate_->IsInTabletMode())
Dismiss();
break;
default:
NOTREACHED();
return false;
}
// Don't let DialogClientView handle the accelerator.
return true;
}
void AppListView::Layout() {
// Avoid layout while building the view.
if (is_building_)
return;
// Avoid layout during animations.
if (GetWidget()->GetLayer()->GetAnimator() &&
GetWidget()->GetLayer()->GetAnimator()->is_animating()) {
return;
}
const gfx::Rect contents_bounds = GetContentsBounds();
// Exclude the shelf size from the contents bounds to avoid apps grid from
// overlapping with shelf.
gfx::Rect main_bounds = contents_bounds;
main_bounds.Inset(GetMainViewInsetsForShelf());
app_list_main_view_->SetBoundsRect(main_bounds);
app_list_background_shield_->UpdateBounds(contents_bounds);
UpdateAppListBackgroundYPosition(target_app_list_state_);
}
void AppListView::OnThemeChanged() {
views::View::OnThemeChanged();
SetBackgroundShieldColor();
}
ax::mojom::Role AppListView::GetAccessibleWindowRole() {
// Default role of root view is ax::mojom::Role::kWindow which traps ChromeVox
// focus within the root view. Assign ax::mojom::Role::kGroup here to allow
// the focus to move from elements in app list view to search box.
return ax::mojom::Role::kGroup;
}
const AppListConfig& AppListView::GetAppListConfig() const {
return *app_list_config_;
}
views::View* AppListView::GetAppListBackgroundShieldForTest() {
return app_list_background_shield_;
}
SkColor AppListView::GetAppListBackgroundShieldColorForTest() {
return app_list_background_shield_->GetColorForTest();
}
bool AppListView::IsShowingEmbeddedAssistantUI() const {
return app_list_main_view()->contents_view()->IsShowingEmbeddedAssistantUI();
}
bool AppListView::IsFolderBeingRenamed() {
return GetAppsContainerView()
->app_list_folder_view()
->folder_header_view()
->HasTextFocus();
}
void AppListView::UpdatePageResetTimer(bool app_list_visibility) {
if (app_list_visibility || !delegate_->IsInTabletMode()) {
page_reset_timer_.Stop();
return;
}
page_reset_timer_.Start(
FROM_HERE,
base::TimeDelta::FromMinutes(kAppListPageResetTimeLimitMinutes), this,
&AppListView::SelectInitialAppsPage);
if (skip_page_reset_timer_for_testing)
page_reset_timer_.FireNow();
}
gfx::Insets AppListView::GetMainViewInsetsForShelf() const {
if (is_side_shelf()) {
// Set both horizontal insets so the app list remains centered on the
// screen.
return gfx::Insets(0, delegate_->GetShelfSize());
}
return gfx::Insets(0, 0, delegate_->GetShelfSize(), 0);
}
void AppListView::UpdateAppListConfig(aura::Window* parent_window) {
// Create the app list configuration override if it's needed for the current
// display bounds and the available apps grid size.
std::unique_ptr<AppListConfig> new_config =
AppListConfigProvider::Get().CreateForAppListWidget(
display::Screen::GetScreen()
->GetDisplayNearestView(parent_window)
.work_area()
.size(),
GetMainViewInsetsForShelf(), app_list_config_.get());
if (!new_config)