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// Copyright (c) 2012 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 CHROME_BROWSER_UI_WEBUI_TASK_MANAGER_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_TASK_MANAGER_HANDLER_H_
#pragma once
#include <set>
#include <string>
#include <vector>
#include "content/public/browser/web_ui_message_handler.h"
#include "chrome/browser/task_manager/task_manager.h"
namespace base {
class ListValue;
}
class TaskManagerHandler : public content::WebUIMessageHandler,
public TaskManagerModelObserver {
public:
explicit TaskManagerHandler(TaskManager* tm);
virtual ~TaskManagerHandler();
// TaskManagerModelObserver implementation.
// Invoked when the model has been completely changed.
virtual void OnModelChanged() OVERRIDE;
// Invoked when a range of items has changed.
virtual void OnItemsChanged(int start, int length) OVERRIDE;
// Invoked when new items are added.
virtual void OnItemsAdded(int start, int length) OVERRIDE;
// Invoked when a range of items has been removed.
virtual void OnItemsRemoved(int start, int length) OVERRIDE;
// WebUIMessageHandler implementation.
virtual void RegisterMessages() OVERRIDE;
// Callback for the "killProcesses" message.
void HandleKillProcesses(const base::ListValue* indexes);
// Callback for the "activatePage" message.
void HandleActivatePage(const base::ListValue* resource_index);
// Callback for the "inspect" message.
void HandleInspect(const base::ListValue* resource_index);
void EnableTaskManager(const base::ListValue* indexes);
void DisableTaskManager(const base::ListValue* indexes);
void OpenAboutMemory(const base::ListValue* indexes);
// Callback for the "setUpdateColumn" message.
void HandleSetUpdateColumn(const base::ListValue* args);
private:
bool is_alive();
// Models
TaskManager* task_manager_;
TaskManagerModel* model_;
bool is_enabled_;
// Table to cache the group index of the resource index.
std::vector<int> resource_to_group_table_;
// Set to store the enabled columns.
std::set<std::string> enabled_columns_;
// Invoked when group(s) are added/changed/removed.
// These method are called from OnItemAdded/-Changed/-Removed internally.
void OnGroupAdded(int start, int length);
void OnGroupChanged(int start, int length);
void OnGroupRemoved(int start, int length);
// Updates |resource_to_group_table_|.
void UpdateResourceGroupTable(int start, int length);
DISALLOW_COPY_AND_ASSIGN(TaskManagerHandler);
};
#endif // CHROME_BROWSER_UI_WEBUI_TASK_MANAGER_HANDLER_H_
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