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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_BROWSER_UI_WEBUI_POLICY_UI_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_POLICY_UI_HANDLER_H_
#include <stddef.h>
#include <string.h>
#include <memory>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "components/policy/core/browser/policy_error_map.h"
#include "components/policy/core/common/policy_map.h"
#include "components/policy/core/common/policy_namespace.h"
#include "components/policy/core/common/policy_service.h"
#include "components/policy/core/common/schema_registry.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_data_source.h"
#include "content/public/browser/web_ui_message_handler.h"
#if defined(ENABLE_EXTENSIONS)
#include "extensions/browser/extension_registry_observer.h"
#endif
struct PolicyStringMap {
const char* key;
int string_id;
};
class CloudPolicyStatusProvider;
// The JavaScript message handler for the chrome://policy page.
class PolicyUIHandler : public content::WebUIMessageHandler,
#if defined(ENABLE_EXTENSIONS)
public extensions::ExtensionRegistryObserver,
#endif
public policy::PolicyService::Observer,
public policy::SchemaRegistry::Observer {
public:
PolicyUIHandler();
~PolicyUIHandler() override;
static void AddLocalizedPolicyStrings(content::WebUIDataSource* source,
const PolicyStringMap* strings,
size_t count);
static void AddCommonLocalizedStringsToSource(
content::WebUIDataSource* source);
// content::WebUIMessageHandler implementation.
void RegisterMessages() override;
#if defined(ENABLE_EXTENSIONS)
// extensions::ExtensionRegistryObserver implementation.
void OnExtensionLoaded(content::BrowserContext* browser_context,
const extensions::Extension* extension) override;
void OnExtensionUnloaded(
content::BrowserContext* browser_context,
const extensions::Extension* extension,
extensions::UnloadedExtensionInfo::Reason reason) override;
#endif
// policy::PolicyService::Observer implementation.
void OnPolicyUpdated(const policy::PolicyNamespace& ns,
const policy::PolicyMap& previous,
const policy::PolicyMap& current) override;
// policy::SchemaRegistry::Observer implementation.
void OnSchemaRegistryUpdated(bool has_new_schemas) override;
protected:
virtual void AddPolicyName(const std::string& name,
base::DictionaryValue* names) const;
// Send a dictionary containing the names of all known policies to the UI.
virtual void SendPolicyNames() const;
private:
// Send information about the current policy values to the UI. For each policy
// whose value has been set, a dictionary containing the value and additional
// metadata is sent.
void SendPolicyValues() const;
// Send the status of cloud policy to the UI. For each scope that has cloud
// policy enabled (device and/or user), a dictionary containing status
// information is sent.
void SendStatus() const;
// Inserts a description of each policy in |policy_map| into |values|, using
// the optional errors in |errors| to determine the status of each policy.
void GetPolicyValues(const policy::PolicyMap& policy_map,
policy::PolicyErrorMap* errors,
base::DictionaryValue* values) const;
void GetChromePolicyValues(base::DictionaryValue* values) const;
void HandleInitialized(const base::ListValue* args);
void HandleReloadPolicies(const base::ListValue* args);
void OnRefreshPoliciesDone() const;
policy::PolicyService* GetPolicyService() const;
std::string device_domain_;
// Providers that supply status dictionaries for user and device policy,
// respectively. These are created on initialization time as appropriate for
// the platform (Chrome OS / desktop) and type of policy that is in effect.
std::unique_ptr<CloudPolicyStatusProvider> user_status_provider_;
std::unique_ptr<CloudPolicyStatusProvider> device_status_provider_;
base::WeakPtrFactory<PolicyUIHandler> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(PolicyUIHandler);
};
#endif // CHROME_BROWSER_UI_WEBUI_POLICY_UI_HANDLER_H_