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// Copyright (c) 2010 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_STATUS_ICONS_STATUS_TRAY_H_
#define CHROME_BROWSER_STATUS_ICONS_STATUS_TRAY_H_
#pragma once
#include "base/hash_tables.h"
#include "base/scoped_ptr.h"
class StatusIcon;
// Provides a cross-platform interface to the system's status tray, and exposes
// APIs to add/remove icons to the tray and attach context menus.
class StatusTray {
public:
// Static factory method that is implemented separately for each platform to
// produce the appropriate platform-specific instance.
static StatusTray* Create();
virtual ~StatusTray();
// Gets the current status icon associated with this identifier, or creates
// a new one if none exists. The StatusTray retains ownership of the
// StatusIcon. Returns NULL if the status tray icon could not be created.
StatusIcon* GetStatusIcon(const string16& identifier);
// Removes the current status icon associated with this identifier, if any.
void RemoveStatusIcon(const string16& identifier);
protected:
StatusTray();
// Factory method for creating a status icon.
virtual StatusIcon* CreateStatusIcon() = 0;
// Removes all StatusIcons (used by derived classes to clean up in case they
// track external state used by the StatusIcons).
void RemoveAllIcons();
typedef base::hash_map<string16, StatusIcon*> StatusIconMap;
// Returns the list of active status icons so subclasses can operate on them.
const StatusIconMap& status_icons() { return status_icons_; }
private:
// Map containing all active StatusIcons.
// Key: String identifiers (passed in to GetStatusIcon)
// Value: The StatusIcon associated with that identifier (strong pointer -
// StatusIcons are freed when the StatusTray destructor is called).
StatusIconMap status_icons_;
DISALLOW_COPY_AND_ASSIGN(StatusTray);
};
#endif // CHROME_BROWSER_STATUS_ICONS_STATUS_TRAY_H_
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