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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/bubble/tooltip_icon.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "components/vector_icons/vector_icons.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/bubble/bubble_frame_view.h"
#include "ui/views/bubble/info_bubble.h"
#include "ui/views/controls/focus_ring.h"
#include "ui/views/controls/highlight_path_generator.h"
#include "ui/views/layout/layout_provider.h"
#include "ui/views/mouse_watcher_view_host.h"
#include "ui/views/style/platform_style.h"
namespace views {
TooltipIcon::TooltipIcon(const std::u16string& tooltip, int tooltip_icon_size)
: tooltip_(tooltip),
tooltip_icon_size_(tooltip_icon_size),
bubble_(nullptr) {
SetFocusBehavior(PlatformStyle::kDefaultFocusBehavior);
set_suppress_default_focus_handling();
FocusRing::Install(this);
SetBorder(CreateEmptyBorder(
LayoutProvider::Get()->GetInsetsMetric(INSETS_VECTOR_IMAGE_BUTTON)));
InstallCircleHighlightPathGenerator(this);
// The tooltip icon, despite visually being an icon with no text, actually
// opens a bubble whenever the user mouses over it or focuses it, so it's
// essentially a text control that hides itself when not in view without
// altering the bubble's layout when shown. As such, have it behave like
// static text for screenreader users, since that's the role it serves here
// anyway.
GetViewAccessibility().SetRole(ax::mojom::Role::kStaticText);
GetViewAccessibility().SetName(tooltip_);
}
TooltipIcon::~TooltipIcon() {
observers_.Notify(&Observer::OnTooltipIconDestroying, this);
HideBubble();
}
void TooltipIcon::SetBubbleWidth(int preferred_width) {
preferred_width_ = preferred_width;
OnPropertyChanged(&preferred_width_, kPropertyEffectsPreferredSizeChanged);
}
int TooltipIcon::GetBubbleWidth() const {
return preferred_width_;
}
void TooltipIcon::SetAnchorPointArrow(BubbleBorder::Arrow arrow) {
anchor_point_arrow_ = arrow;
OnPropertyChanged(&anchor_point_arrow_, kPropertyEffectsPaint);
}
BubbleBorder::Arrow TooltipIcon::GetAnchorPointArrow() const {
return anchor_point_arrow_;
}
void TooltipIcon::OnMouseEntered(const ui::MouseEvent& event) {
mouse_inside_ = true;
show_timer_.Start(FROM_HERE, base::Milliseconds(150), this,
&TooltipIcon::ShowBubble);
}
void TooltipIcon::OnMouseExited(const ui::MouseEvent& event) {
show_timer_.Stop();
}
bool TooltipIcon::OnMousePressed(const ui::MouseEvent& event) {
// Swallow the click so that the parent doesn't process it.
return true;
}
void TooltipIcon::OnFocus() {
ShowBubble();
#if BUILDFLAG(IS_WIN)
// Tooltip text does not announce on Windows; crbug.com/1245470
NotifyAccessibilityEventDeprecated(ax::mojom::Event::kFocus, true);
#endif
}
void TooltipIcon::OnBlur() {
HideBubble();
}
void TooltipIcon::OnGestureEvent(ui::GestureEvent* event) {
if (event->type() == ui::EventType::kGestureTap) {
ShowBubble();
event->SetHandled();
}
}
void TooltipIcon::OnThemeChanged() {
ImageView::OnThemeChanged();
SetDrawAsHovered(false);
}
void TooltipIcon::MouseMovedOutOfHost() {
if (IsMouseHovered()) {
mouse_watcher_->Start(GetWidget()->GetNativeWindow());
return;
}
mouse_inside_ = false;
HideBubble();
}
void TooltipIcon::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void TooltipIcon::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void TooltipIcon::SetDrawAsHovered(bool hovered) {
SetImage(ui::ImageModel::FromVectorIcon(
vector_icons::kInfoOutlineIcon,
GetColorProvider()->GetColor(hovered ? ui::kColorHelpIconActive
: ui::kColorHelpIconInactive),
tooltip_icon_size_));
}
void TooltipIcon::ShowBubble() {
if (bubble_) {
return;
}
SetDrawAsHovered(true);
bubble_ = new InfoBubble(this, anchor_point_arrow_, tooltip_);
bubble_->set_preferred_width(preferred_width_);
// When shown due to a gesture event, close on deactivate (i.e. don't use
// "focusless").
bubble_->SetCanActivate(!mouse_inside_);
bubble_->Show();
observation_.Observe(bubble_->GetWidget());
if (mouse_inside_) {
View* frame = bubble_->GetWidget()->non_client_view()->frame_view();
mouse_watcher_ = std::make_unique<MouseWatcher>(
std::make_unique<MouseWatcherViewHost>(frame, gfx::Insets()), this);
mouse_watcher_->Start(GetWidget()->GetNativeWindow());
}
observers_.Notify(&Observer::OnTooltipBubbleShown, this);
}
void TooltipIcon::HideBubble() {
if (bubble_) {
bubble_->Hide();
}
}
void TooltipIcon::OnWidgetDestroyed(Widget* widget) {
DCHECK(observation_.IsObservingSource(widget));
observation_.Reset();
SetDrawAsHovered(false);
mouse_watcher_.reset();
bubble_ = nullptr;
}
BEGIN_METADATA(TooltipIcon)
ADD_PROPERTY_METADATA(int, BubbleWidth)
ADD_PROPERTY_METADATA(BubbleBorder::Arrow, AnchorPointArrow)
END_METADATA
} // namespace views
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