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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_TASK_MANAGER_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_TASK_MANAGER_VIEW_H_
#include <vector>
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/task_manager/task_manager_table_model.h"
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/base/models/simple_menu_model.h"
#include "ui/base/models/table_model.h"
#include "ui/views/context_menu_controller.h"
#include "ui/views/controls/menu/menu_runner.h"
#include "ui/views/controls/table/table_grouper.h"
#include "ui/views/controls/table/table_view_observer.h"
#include "ui/views/window/dialog_delegate.h"
class Browser;
namespace views {
class TableView;
class View;
} // namespace views
namespace task_manager {
// The new task manager UI container.
class TaskManagerView : public TableViewDelegate,
public views::DialogDelegateView,
public views::TableGrouper,
public views::TableViewObserver,
public views::ContextMenuController,
public ui::SimpleMenuModel::Delegate {
public:
METADATA_HEADER(TaskManagerView);
TaskManagerView(const TaskManagerView&) = delete;
TaskManagerView& operator=(const TaskManagerView&) = delete;
~TaskManagerView() override;
// Shows the Task Manager window, or re-activates an existing one.
static task_manager::TaskManagerTableModel* Show(Browser* browser);
// Hides the Task Manager if it is showing.
static void Hide();
// task_manager::TableViewDelegate:
bool IsColumnVisible(int column_id) const override;
bool SetColumnVisibility(int column_id, bool new_visibility) override;
bool IsTableSorted() const override;
TableSortDescriptor GetSortDescriptor() const override;
void SetSortDescriptor(const TableSortDescriptor& descriptor) override;
// views::View:
gfx::Size CalculatePreferredSize() const override;
bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
// views::DialogDelegateView:
views::View* GetInitiallyFocusedView() override;
bool ExecuteWindowsCommand(int command_id) override;
ui::ImageModel GetWindowIcon() override;
std::string GetWindowName() const override;
bool Accept() override;
bool IsDialogButtonEnabled(ui::DialogButton button) const override;
void WindowClosing() override;
// views::TableGrouper:
void GetGroupRange(size_t model_index, views::GroupRange* range) override;
// views::TableViewObserver:
void OnSelectionChanged() override;
void OnDoubleClick() override;
void OnKeyDown(ui::KeyboardCode keycode) override;
// views::ContextMenuController:
void ShowContextMenuForViewImpl(views::View* source,
const gfx::Point& point,
ui::MenuSourceType source_type) override;
// ui::SimpleMenuModel::Delegate:
bool IsCommandIdChecked(int id) const override;
bool IsCommandIdEnabled(int id) const override;
void ExecuteCommand(int id, int event_flags) override;
void MenuClosed(ui::SimpleMenuModel* source) override;
static TaskManagerView* GetInstanceForTests();
private:
friend class TaskManagerViewTest;
TaskManagerView();
// Creates the child controls.
void Init();
// Initializes the state of the always-on-top setting as the window is shown.
void InitAlwaysOnTopState();
// Activates the tab associated with the selected row.
void ActivateSelectedTab();
// Selects the active tab in the specified browser window.
void SelectTaskOfActiveTab(Browser* browser);
// Restores saved "always on top" state from a previous session.
void RetrieveSavedAlwaysOnTopState();
std::unique_ptr<TaskManagerTableModel> table_model_;
std::unique_ptr<ui::SimpleMenuModel> menu_model_;
std::unique_ptr<views::MenuRunner> menu_runner_;
// We need to own the text of the menu, the Windows API does not copy it.
std::u16string always_on_top_menu_text_;
raw_ptr<views::TableView, DanglingUntriaged> tab_table_;
raw_ptr<views::View, DanglingUntriaged> tab_table_parent_;
// all possible columns, not necessarily visible
std::vector<ui::TableColumn> columns_;
// True when the Task Manager window should be shown on top of other windows.
bool is_always_on_top_;
};
} // namespace task_manager
#endif // CHROME_BROWSER_UI_VIEWS_TASK_MANAGER_VIEW_H_
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