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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_FRAME_POLICY_SETTINGS_H_
#define CHROME_FRAME_POLICY_SETTINGS_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/memory/singleton.h"
// A simple class that reads and caches policy settings for Chrome Frame.
// TODO(tommi): Support refreshing when new settings are pushed.
// TODO(tommi): Use Chrome's classes for this (and the notification service).
class PolicySettings {
public:
enum RendererForUrl {
RENDERER_NOT_SPECIFIED = -1,
RENDER_IN_HOST,
RENDER_IN_CHROME_FRAME,
};
enum SkipMetadataCheck {
SKIP_METADATA_CHECK_NOT_SPECIFIED = -1,
SKIP_METADATA_CHECK_NO,
SKIP_METADATA_CHECK_YES,
};
static PolicySettings* GetInstance();
RendererForUrl default_renderer() const {
return default_renderer_;
}
SkipMetadataCheck skip_metadata_check() const {
return skip_metadata_check_;
}
RendererForUrl GetRendererForUrl(const wchar_t* url);
RendererForUrl GetRendererForContentType(const wchar_t* content_type);
// Returns the policy-configured Chrome app locale, or an empty string if none
// is configured.
const std::wstring& ApplicationLocale() const {
return application_locale_;
}
// Contains additional parameters that can optionally be configured for the
// current user via the policy settings. The program part of this command
// line object must not be used when appending to another command line.
const CommandLine& AdditionalLaunchParameters() const;
// Returns true if the Chrome Frame turndown prompt should be suppressed.
bool suppress_turndown_prompt() const {
return suppress_turndown_prompt_;
}
// Helper functions for reading settings from the registry
static void ReadUrlSettings(RendererForUrl* default_renderer,
std::vector<std::wstring>* renderer_exclusion_list);
static void ReadMetadataCheckSettings(SkipMetadataCheck* skip_metadata_check);
static void ReadContentTypeSetting(
std::vector<std::wstring>* content_type_list);
static void ReadStringSetting(const char* value_name, std::wstring* value);
static void ReadBoolSetting(const char* value_name, bool* value);
protected:
PolicySettings()
: default_renderer_(RENDERER_NOT_SPECIFIED),
skip_metadata_check_(SKIP_METADATA_CHECK_NOT_SPECIFIED),
additional_launch_parameters_(CommandLine::NO_PROGRAM),
suppress_turndown_prompt_(false) {
RefreshFromRegistry();
}
~PolicySettings() {
}
// Protected for now since the class is not thread safe.
void RefreshFromRegistry();
protected:
RendererForUrl default_renderer_;
SkipMetadataCheck skip_metadata_check_;
std::vector<std::wstring> renderer_exclusion_list_;
std::vector<std::wstring> content_type_list_;
std::wstring application_locale_;
CommandLine additional_launch_parameters_;
bool suppress_turndown_prompt_;
private:
// This ensures no construction is possible outside of the class itself.
friend struct DefaultSingletonTraits<PolicySettings>;
DISALLOW_COPY_AND_ASSIGN(PolicySettings);
};
#endif // CHROME_FRAME_POLICY_SETTINGS_H_
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