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// Copyright 2018 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/ash_export.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/view.h"
namespace ash {
class FeaturePodButton;
class FeaturePodsContainerView;
class TopShortcutsView;
class NotificationHiddenView;
class UnifiedMessageCenterView;
class UnifiedSystemInfoView;
class UnifiedSystemTrayController;
// Container view of slider views. If SetExpandedAmount() is called with 1.0,
// the behavior is same as vertiacal BoxLayout, but otherwise it shows
// intermediate state during animation.
class UnifiedSlidersContainerView : public views::View {
explicit UnifiedSlidersContainerView(bool initially_expanded);
~UnifiedSlidersContainerView() override;
// Change the expanded state. 0.0 if collapsed, and 1.0 if expanded.
// Otherwise, it shows intermediate state.
void SetExpandedAmount(double expanded_amount);
// Get height of the view when |expanded_amount| is set to 1.0.
int GetExpandedHeight() const;
// Update opacity of each child slider views based on |expanded_amount_|.
void UpdateOpacity();
// views::View:
void Layout() override;
gfx::Size CalculatePreferredSize() const override;
double expanded_amount_;
// View class of the main bubble in UnifiedSystemTray.
// The UnifiedSystemTray contains two sub components:
// 1. MessageCenter: contains the list of notifications
// 2. SystemTray: contains quick settings controls
// Note that the term "UnifiedSystemTray" refers to entire bubble containing
// both (1) and (2).
class ASH_EXPORT UnifiedSystemTrayView : public views::View,
public views::FocusTraversable {
UnifiedSystemTrayView(UnifiedSystemTrayController* controller,
bool initially_expanded);
~UnifiedSystemTrayView() override;
// Set the maximum height that the view can take.
void SetMaxHeight(int max_height);
// Add feature pod button to |feature_pods_|.
void AddFeaturePodButton(FeaturePodButton* button);
// Add slider view.
void AddSliderView(views::View* slider_view);
// Hide the main view and show the given |detailed_view|.
void SetDetailedView(views::View* detailed_view);
// Remove the detailed view set by SetDetailedView, and show the main view.
// It deletes |detailed_view| and children.
void ResetDetailedView();
// Save and restore keyboard focus of feature pod.
void SaveFeaturePodFocus();
void RestoreFeaturePodFocus();
// Change the expanded state. 0.0 if collapsed, and 1.0 if expanded.
// Otherwise, it shows intermediate state.
void SetExpandedAmount(double expanded_amount);
// Get height of the system tray (excluding the message center) when
// |expanded_amount| is set to 1.0.
// Note that this function is used to calculate the transform-based
// collapse/expand animation, which is currently only enabled when there are
// no notifications.
int GetExpandedSystemTrayHeight() const;
// Get height of the system menu (excluding the message center) when
// |expanded_amount| is set to 0.0.
int GetCollapsedSystemTrayHeight() const;
// Get current height of the view (including the message center).
int GetCurrentHeight() const;
// Return true if layer transform can be used against the view. During
// animation, the height of the view changes, but resizing of the bubble
// is performance bottleneck. If this method returns true, the embedder can
// call SetTransform() to move this view in order to avoid resizing.
bool IsTransformEnabled() const;
// Update the top of the SystemTray part to imitate notification list
// scrolling under SystemTray. |rect_below_scroll| is the region of
// notifications covered by SystemTray part, and its coordinate is relative to
// UnifiedSystemTrayView. It can be empty.
void SetNotificationRectBelowScroll(const gfx::Rect& rect_below_scroll);
// Returns the number of visible feature pods.
int GetVisibleFeaturePodCount() const;
// Create background of UnifiedSystemTray that is semi-transparent and has
// rounded corners.
static std::unique_ptr<views::Background> CreateBackground();
// views::View:
void OnGestureEvent(ui::GestureEvent* event) override;
void ChildPreferredSizeChanged(views::View* child) override;
views::FocusTraversable* GetFocusTraversable() override;
// views::FocusTraversable:
views::FocusSearch* GetFocusSearch() override;
views::FocusTraversable* GetFocusTraversableParent() override;
views::View* GetFocusTraversableParentView() override;
NotificationHiddenView* notification_hidden_view_for_testing() {
return notification_hidden_view_;
View* detailed_view_for_testing() { return detailed_view_container_; }
class FocusSearch;
double expanded_amount_;
// Unowned.
UnifiedSystemTrayController* const controller_;
// Owned by views hierarchy.
NotificationHiddenView* const notification_hidden_view_;
TopShortcutsView* const top_shortcuts_view_;
FeaturePodsContainerView* const feature_pods_container_;
UnifiedSlidersContainerView* const sliders_container_;
UnifiedSystemInfoView* const system_info_view_;
views::View* const system_tray_container_;
views::View* const detailed_view_container_;
UnifiedMessageCenterView* const message_center_view_;
// The maximum height available to the view.
int max_height_ = 0;
const std::unique_ptr<FocusSearch> focus_search_;
const std::unique_ptr<ui::EventHandler> interacted_by_tap_recorder_;
} // namespace ash