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// Copyright 2014 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.
#ifndef ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_
#define ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_
#include "athena/athena_export.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "ui/app_list/app_list_item_list_observer.h"
#include "ui/app_list/views/search_box_view_delegate.h"
#include "ui/gfx/animation/tween.h"
#include "ui/views/view.h"
namespace app_list {
class AppListModelObserver;
class AppListViewDelegate;
class SearchBoxView;
class SearchResultListView;
}
namespace athena {
class ATHENA_EXPORT AthenaStartPageView
: public views::View,
public app_list::SearchBoxViewDelegate,
public app_list::AppListItemListObserver {
public:
class Observer {
public:
virtual void OnLayoutStateChanged(float new_state) = 0;
};
explicit AthenaStartPageView(app_list::AppListViewDelegate* delegate);
~AthenaStartPageView() override;
// Requests the focus on the search box in the start page view.
void RequestFocusOnSearchBox();
// Updates the layout state. See the comment of |layout_state_| field.
void SetLayoutState(float layout_state);
// Updates the layout state and move the subviews to the target location with
// animation.
void SetLayoutStateWithAnimation(float layout_state,
gfx::Tween::Type tween_type);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
friend class AthenaStartPageViewTest;
static const char kViewClassName[];
static size_t GetMaxIconNumForTest();
// A struct which bundles the layout data of subviews.
struct LayoutData {
gfx::Rect search_box;
gfx::Rect icons;
gfx::Rect controls;
float system_info_opacity;
float logo_opacity;
LayoutData();
};
// Returns the bounds for |VISIBLE_BOTTOM|.
LayoutData CreateBottomBounds(int width);
// Returns the bounds for |VISIBLE_CENTERED|.
LayoutData CreateCenteredBounds(int width);
void UpdateAppIcons();
// Schedules the animation for the layout the search box and the search
// results.
void LayoutSearchResults(bool should_show_search_results);
// Called when the animation of search box / search results layout has
// completed.
void OnSearchResultLayoutAnimationCompleted(bool should_show_search_results);
// views::View:
void Layout() override;
bool OnKeyPressed(const ui::KeyEvent& key_event) override;
// app_list::SearchBoxViewDelegate:
void QueryChanged(app_list::SearchBoxView* sender) override;
// app_list::AppListItemListObserver:
void OnListItemAdded(size_t index, app_list::AppListItem* item) override;
void OnListItemRemoved(size_t index, app_list::AppListItem* item) override;
void OnListItemMoved(size_t from_index,
size_t to_index,
app_list::AppListItem* item) override;
// Not owned.
app_list::AppListViewDelegate* delegate_;
// Views are owned through its hierarchy.
views::View* system_info_view_;
views::View* app_icon_container_;
views::View* search_box_container_;
views::View* control_icon_container_;
views::View* logo_;
app_list::SearchBoxView* search_box_view_;
app_list::SearchResultListView* search_results_view_;
// The expected height of |search_results_view_|
int search_results_height_;
// The state to specify how each of the subviews should be laid out, in the
// range of [0, 1]. 0 means fully BOTTOM state, and 1 is fully CENTERED state.
float layout_state_;
ObserverList<Observer> observers_;
base::WeakPtrFactory<AthenaStartPageView> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(AthenaStartPageView);
};
} // namespace athena
#endif // ATHENA_HOME_ATHENA_START_PAGE_VIEW_H_
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