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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_COMMON_EXTENSIONS_FEATURE_SWITCH_H_
#define CHROME_COMMON_EXTENSIONS_FEATURE_SWITCH_H_
#include <string>
#include "base/basictypes.h"
class CommandLine;
namespace extensions {
// A switch that can turn a feature on or off. Typically controlled via
// command-line switches but can be overridden, e.g., for testing.
class FeatureSwitch {
public:
static FeatureSwitch* action_box();
static FeatureSwitch* easy_off_store_install();
static FeatureSwitch* script_badges();
static FeatureSwitch* script_bubble();
static FeatureSwitch* sideload_wipeout();
static FeatureSwitch* prompt_for_external_extensions();
static FeatureSwitch* tab_capture();
enum DefaultValue {
DEFAULT_ENABLED,
DEFAULT_DISABLED
};
enum OverrideValue {
OVERRIDE_NONE,
OVERRIDE_ENABLED,
OVERRIDE_DISABLED
};
// A temporary override for the switch value.
class ScopedOverride {
public:
ScopedOverride(FeatureSwitch* feature, bool override_value);
~ScopedOverride();
private:
FeatureSwitch* feature_;
FeatureSwitch::OverrideValue previous_value_;
DISALLOW_COPY_AND_ASSIGN(ScopedOverride);
};
FeatureSwitch(const char* switch_name,
DefaultValue default_value);
FeatureSwitch(const CommandLine* command_line,
const char* switch_name,
DefaultValue default_value);
// Consider using ScopedOverride instead.
void SetOverrideValue(OverrideValue value);
OverrideValue GetOverrideValue() const;
bool IsEnabled() const;
std::string GetLegacyEnableFlag() const;
std::string GetLegacyDisableFlag() const;
private:
void Init(const CommandLine* command_line,
const char* switch_name,
DefaultValue default_value);
const CommandLine* command_line_;
const char* switch_name_;
bool default_value_;
OverrideValue override_value_;
DISALLOW_COPY_AND_ASSIGN(FeatureSwitch);
};
} // namespace extensions
#endif // CHROME_COMMON_EXTENSIONS_FEATURE_SWITCH_H_
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