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// Copyright 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 "ash/shelf/shelf_tooltip_manager.h"
#include "ash/shelf/shelf.h"
#include "ash/shelf/shelf_layout_manager.h"
#include "ash/shelf/shelf_view.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/wm/window_animations.h"
#include "base/bind.h"
#include "base/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "ui/aura/window.h"
#include "ui/events/event.h"
#include "ui/events/event_constants.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/views/bubble/bubble_delegate.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace {
const int kTooltipTopBottomMargin = 3;
const int kTooltipLeftRightMargin = 10;
const int kTooltipAppearanceDelay = 1000; // msec
const int kTooltipMinHeight = 29 - 2 * kTooltipTopBottomMargin;
const SkColor kTooltipTextColor = SkColorSetRGB(0x22, 0x22, 0x22);
// The maximum width of the tooltip bubble. Borrowed the value from
// ash/tooltip/tooltip_controller.cc
const int kTooltipMaxWidth = 250;
// The offset for the tooltip bubble - making sure that the bubble is flush
// with the shelf. The offset includes the arrow size in pixels as well as
// the activation bar and other spacing elements.
const int kArrowOffsetLeftRight = 11;
const int kArrowOffsetTopBottom = 7;
} // namespace
// The implementation of tooltip of the launcher.
class ShelfTooltipManager::ShelfTooltipBubble
: public views::BubbleDelegateView {
public:
ShelfTooltipBubble(views::View* anchor,
views::BubbleBorder::Arrow arrow,
const base::string16& text);
private:
// views::View overrides:
gfx::Size GetPreferredSize() const override;
DISALLOW_COPY_AND_ASSIGN(ShelfTooltipBubble);
};
ShelfTooltipManager::ShelfTooltipBubble::ShelfTooltipBubble(
views::View* anchor,
views::BubbleBorder::Arrow arrow,
const base::string16& text)
: views::BubbleDelegateView(anchor, arrow) {
gfx::Insets insets = gfx::Insets(kArrowOffsetTopBottom,
kArrowOffsetLeftRight);
// Adjust the anchor location for asymmetrical borders of shelf item.
if (anchor->border())
insets += anchor->border()->GetInsets();
set_anchor_view_insets(insets);
set_close_on_esc(false);
set_close_on_deactivate(false);
set_can_activate(false);
set_accept_events(false);
set_margins(gfx::Insets(kTooltipTopBottomMargin, kTooltipLeftRightMargin));
set_shadow(views::BubbleBorder::SMALL_SHADOW);
SetLayoutManager(new views::FillLayout());
// The anchor may not have the widget in tests.
if (anchor->GetWidget() && anchor->GetWidget()->GetNativeWindow()) {
set_parent_window(ash::Shell::GetContainer(
anchor->GetWidget()->GetNativeWindow()->GetRootWindow(),
ash::kShellWindowId_SettingBubbleContainer));
}
views::Label* label = new views::Label(text);
label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
label->SetEnabledColor(kTooltipTextColor);
AddChildView(label);
views::BubbleDelegateView::CreateBubble(this);
SizeToContents();
}
gfx::Size ShelfTooltipManager::ShelfTooltipBubble::GetPreferredSize() const {
const gfx::Size size = views::BubbleDelegateView::GetPreferredSize();
return gfx::Size(std::min(size.width(), kTooltipMaxWidth),
std::max(size.height(), kTooltipMinHeight));
}
ShelfTooltipManager::ShelfTooltipManager(ShelfView* shelf_view)
: timer_delay_(kTooltipAppearanceDelay),
shelf_view_(shelf_view),
shelf_layout_manager_(nullptr),
bubble_(nullptr),
weak_factory_(this) {}
ShelfTooltipManager::~ShelfTooltipManager() {
WillDeleteShelf();
}
void ShelfTooltipManager::Init() {
shelf_layout_manager_ = shelf_view_->shelf()->shelf_layout_manager();
shelf_layout_manager_->AddObserver(this);
// TODO(msw): Capture events outside the shelf to close tooltips?
shelf_view_->GetWidget()->GetNativeWindow()->AddPreTargetHandler(this);
}
void ShelfTooltipManager::Close() {
timer_.Stop();
if (bubble_)
bubble_->GetWidget()->Close();
bubble_ = nullptr;
}
bool ShelfTooltipManager::IsVisible() const {
return bubble_ && bubble_->GetWidget()->IsVisible();
}
views::View* ShelfTooltipManager::GetCurrentAnchorView() const {
return bubble_ ? bubble_->GetAnchorView() : nullptr;
}
void ShelfTooltipManager::ShowTooltip(views::View* view) {
timer_.Stop();
if (bubble_) {
// Cancel the hiding animation to hide the old bubble immediately.
gfx::NativeView native_view = bubble_->GetWidget()->GetNativeView();
wm::SetWindowVisibilityAnimationTransition(native_view, wm::ANIMATE_NONE);
Close();
}
if (shelf_layout_manager_ && !shelf_layout_manager_->IsVisible())
return;
Shelf* shelf = shelf_view_->shelf();
views::BubbleBorder::Arrow arrow = shelf->SelectValueForShelfAlignment(
views::BubbleBorder::BOTTOM_CENTER, views::BubbleBorder::LEFT_CENTER,
views::BubbleBorder::RIGHT_CENTER, views::BubbleBorder::TOP_CENTER);
base::string16 text = shelf_view_->GetTitleForView(view);
bubble_ = new ShelfTooltipBubble(view, arrow, text);
gfx::NativeView native_view = bubble_->GetWidget()->GetNativeView();
wm::SetWindowVisibilityAnimationType(
native_view, wm::WINDOW_VISIBILITY_ANIMATION_TYPE_VERTICAL);
wm::SetWindowVisibilityAnimationTransition(native_view, wm::ANIMATE_HIDE);
bubble_->GetWidget()->Show();
}
void ShelfTooltipManager::ShowTooltipWithDelay(views::View* view) {
if (!shelf_layout_manager_ || shelf_layout_manager_->IsVisible()) {
timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(timer_delay_),
base::Bind(&ShelfTooltipManager::ShowTooltip,
weak_factory_.GetWeakPtr(), view));
}
}
void ShelfTooltipManager::OnEvent(ui::Event* event) {
// Close the tooltip on mouse press or exit, and on most non-mouse events.
if (event->type() == ui::ET_MOUSE_PRESSED ||
event->type() == ui::ET_MOUSE_EXITED || !event->IsMouseEvent()) {
if (!event->IsKeyEvent())
Close();
return;
}
gfx::Point point = static_cast<ui::LocatedEvent*>(event)->location();
views::View::ConvertPointFromWidget(shelf_view_, &point);
if (IsVisible() && shelf_view_->ShouldHideTooltip(point)) {
Close();
return;
}
views::View* view = shelf_view_->GetTooltipHandlerForPoint(point);
const bool should_show = shelf_view_->ShouldShowTooltipForView(view);
if (IsVisible() && bubble_->GetAnchorView() != view && should_show)
ShowTooltip(view);
if (!IsVisible() && event->type() == ui::ET_MOUSE_MOVED) {
timer_.Stop();
if (should_show)
ShowTooltipWithDelay(view);
}
}
void ShelfTooltipManager::WillDeleteShelf() {
if (shelf_layout_manager_)
shelf_layout_manager_->RemoveObserver(this);
shelf_layout_manager_ = nullptr;
views::Widget* widget = shelf_view_ ? shelf_view_->GetWidget() : nullptr;
if (widget && widget->GetNativeWindow())
widget->GetNativeWindow()->RemovePreTargetHandler(this);
shelf_view_ = nullptr;
}
void ShelfTooltipManager::WillChangeVisibilityState(
ShelfVisibilityState new_state) {
if (new_state == SHELF_HIDDEN)
Close();
}
void ShelfTooltipManager::OnAutoHideStateChanged(ShelfAutoHideState new_state) {
if (new_state == SHELF_AUTO_HIDE_HIDDEN) {
timer_.Stop();
// AutoHide state change happens during an event filter, so immediate close
// may cause a crash in the HandleMouseEvent() after the filter. So we just
// schedule the Close here.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::Bind(&ShelfTooltipManager::Close, weak_factory_.GetWeakPtr()));
}
}
} // namespace ash
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