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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.
// Maps hostnames to custom zoom levels. Written on the UI thread and read on
// the IO thread. One instance per profile.
#ifndef CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_
#define CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/lock.h"
#include "chrome/common/content_permission_types.h"
class PrefService;
class Profile;
class HostContentSettingsMap {
public:
typedef std::map<std::string, ContentPermissionType> HostContentPermissions;
explicit HostContentSettingsMap(Profile* profile);
static void RegisterUserPrefs(PrefService* prefs);
void ResetToDefaults();
// Returns a map of all hostnames with per host content settings to
// their respective settings where a given |content_type| differs
// from CONTENT_PERMISSION_TYPE_DEFAULT
//
// This may be called on any thread.
HostContentPermissions GetAllPerHostContentPermissions(
ContentSettingsType content_type) const;
// Returns the default ContentPermissions for a specific ContentSettingsType.
//
// This may be called on any thread.
ContentPermissionType GetDefaultContentPermission(
ContentSettingsType type) const {
return default_content_settings_.permissions[type];
}
// Returns the ContentPermissions for a specific ContentSettingsType.
//
// This may be called on any thread.
ContentPermissionType GetPerHostContentPermission(const std::string& host,
ContentSettingsType type) const {
return GetPerHostContentSettings(host).permissions[type];
}
// Returns the ContentPermissions which apply to a given host.
//
// This may be called on any thread.
ContentPermissions GetPerHostContentSettings(const std::string& host) const;
// Sets the default ContentPermissions. Returns true on success.
//
// This should only be called on the UI thread.
bool SetDefaultContentPermission(ContentSettingsType type,
ContentPermissionType permission);
// Sets per host ContentPermissions for a given host and CotentSettings. To
// remove an exception for the host, set the permissions to
// CONTENT_PERMISSIONS_TYPE_DEFAULT.
//
// This should only be called on the UI thread.
void SetPerHostContentPermission(const std::string& host,
ContentSettingsType type,
ContentPermissionType permission);
// Sets per host ContentPermissions for a given host.
//
// This should only be called on the UI thread.
void SetPerHostContentSettings(const std::string& host,
const ContentPermissions& permissions);
private:
typedef std::map<std::string, ContentPermissions> HostContentSettings;
// The profile we're associated with.
Profile* profile_;
// Copy of the pref data, so that we can read it on the IO thread.
HostContentSettings host_content_settings_;
ContentPermissions default_content_settings_;
// Used around accesses to |host_content_settings_| to guarantee thread
// safety.
mutable Lock lock_;
DISALLOW_COPY_AND_ASSIGN(HostContentSettingsMap);
};
#endif // CHROME_BROWSER_HOST_CONTENT_SETTINGS_MAP_H_
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