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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 [requesting_origin, embedder] to content settings. Written on the UI
// thread and read on any thread. One instance per profile. This is based on
// HostContentSettingsMap but differs significantly in two aspects:
// - It maps [requesting_origin.GetOrigin(), embedder.GetOrigin()] => setting
// rather than host => setting.
// - It manages only Geolocation.
#ifndef CHROME_BROWSER_GEOLOCATION_GEOLOCATION_CONTENT_SETTINGS_MAP_H_
#define CHROME_BROWSER_GEOLOCATION_GEOLOCATION_CONTENT_SETTINGS_MAP_H_
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "base/basictypes.h"
#include "base/lock.h"
#include "base/ref_counted.h"
#include "chrome/common/content_settings.h"
#include "googleurl/src/gurl.h"
class DictionaryValue;
class PrefService;
class Profile;
class GeolocationContentSettingsMap
: public base::RefCountedThreadSafe<GeolocationContentSettingsMap> {
public:
typedef std::map<GURL, ContentSetting> OneOriginSettings;
typedef std::map<GURL, OneOriginSettings> AllOriginsSettings;
explicit GeolocationContentSettingsMap(Profile* profile);
static void RegisterUserPrefs(PrefService* prefs);
// Returns the default setting.
//
// This may be called on any thread.
ContentSetting GetDefaultContentSetting() const;
// Returns a single ContentSetting which applies to the given |requesting_url|
// when embedded in a top-level page from |embedding_url|. To determine the
// setting for a top-level page, as opposed to a frame embedded in a page,
// pass the page's URL for both arguments.
//
// This may be called on any thread. Both arguments should be valid GURLs.
ContentSetting GetContentSetting(const GURL& requesting_url,
const GURL& embedding_url) const;
// Returns the settings for all origins with any non-default settings.
//
// This may be called on any thread.
AllOriginsSettings GetAllOriginsSettings() const;
// Sets the default setting.
//
// This should only be called on the UI thread.
void SetDefaultContentSetting(ContentSetting setting);
// Sets the content setting for a particular (requesting origin, embedding
// origin) pair. If the embedding origin is the same as the requesting
// origin, this represents the setting used when the requesting origin is
// itself the top-level page. If |embedder| is the empty GURL, |setting|
// becomes the default setting for the requesting origin when embedded on any
// page that does not have an explicit setting. Passing
// CONTENT_SETTING_DEFAULT for |setting| effectively removes that setting and
// allows future requests to return the all-embedders or global defaults (as
// applicable).
//
// This should only be called on the UI thread. |requesting_url| should be
// a valid GURL, and |embedding_url| should be valid or empty.
void SetContentSetting(const GURL& requesting_url,
const GURL& embedding_url,
ContentSetting setting);
// Clears all settings for |requesting_origin|. Note: Unlike in the functions
// above, this is expected to be an origin, not some URL of which we'll take
// the origin; this is to prevent ambiguity where callers could think they're
// clearing something wider or narrower than they really are.
//
// This should only be called on the UI thread. |requesting_origin| should be
// a valid GURL.
void ClearOneRequestingOrigin(const GURL& requesting_origin);
// Resets all settings.
//
// This should only be called on the UI thread.
void ResetToDefault();
private:
friend class base::RefCountedThreadSafe<GeolocationContentSettingsMap>;
// The default setting.
static const ContentSetting kDefaultSetting;
~GeolocationContentSettingsMap();
// Sets the fields of |one_origin_settings| based on the values in
// |dictionary|.
static void GetOneOriginSettingsFromDictionary(
const DictionaryValue* dictionary,
OneOriginSettings* one_origin_settings);
// The profile we're associated with.
Profile* profile_;
// Copies of the pref data, so that we can read it on the IO thread.
ContentSetting default_content_setting_;
AllOriginsSettings content_settings_;
// Used around accesses to the settings objects to guarantee thread safety.
mutable Lock lock_;
DISALLOW_COPY_AND_ASSIGN(GeolocationContentSettingsMap);
};
#endif // CHROME_BROWSER_GEOLOCATION_GEOLOCATION_CONTENT_SETTINGS_MAP_H_
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