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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/warning_service.h"
#include "base/observer_list.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/warning_service_factory.h"
#include "extensions/common/extension_id.h"
#include "extensions/common/extension_set.h"
using content::BrowserThread;
namespace extensions {
WarningService::WarningService(content::BrowserContext* browser_context)
: browser_context_(browser_context) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (browser_context_) {
extension_registry_observation_.Observe(ExtensionRegistry::Get(
ExtensionsBrowserClient::Get()->GetContextRedirectedToOriginal(
browser_context_)));
}
}
WarningService::~WarningService() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
// static
WarningService* WarningService::Get(content::BrowserContext* browser_context) {
return WarningServiceFactory::GetForBrowserContext(browser_context);
}
void WarningService::ClearWarnings(
const std::set<Warning::WarningType>& types) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ExtensionIdSet affected_extensions;
for (auto i = warnings_.begin(); i != warnings_.end();) {
if (types.find(i->warning_type()) != types.end()) {
affected_extensions.insert(i->extension_id());
warnings_.erase(i++);
} else {
++i;
}
}
if (!affected_extensions.empty())
NotifyWarningsChanged(affected_extensions);
}
std::set<Warning::WarningType>
WarningService::GetWarningTypesAffectingExtension(
const ExtensionId& extension_id) const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::set<Warning::WarningType> result;
for (auto i = warnings_.cbegin(); i != warnings_.cend(); ++i) {
if (i->extension_id() == extension_id)
result.insert(i->warning_type());
}
return result;
}
std::vector<std::string> WarningService::GetWarningMessagesForExtension(
const ExtensionId& extension_id) const {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
std::vector<std::string> result;
const ExtensionSet& extension_set =
ExtensionRegistry::Get(browser_context_)->enabled_extensions();
for (auto i = warnings_.cbegin(); i != warnings_.cend(); ++i) {
if (i->extension_id() == extension_id)
result.push_back(i->GetLocalizedMessage(&extension_set));
}
return result;
}
void WarningService::AddWarnings(const WarningSet& warnings) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ExtensionIdSet affected_extensions;
for (const Warning& warning : warnings) {
if (warnings_.insert(warning).second)
affected_extensions.insert(warning.extension_id());
}
if (!affected_extensions.empty())
NotifyWarningsChanged(affected_extensions);
}
// static
void WarningService::NotifyWarningsOnUI(void* browser_context_id,
const WarningSet& warnings) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!browser_context_id || !ExtensionsBrowserClient::Get() ||
!ExtensionsBrowserClient::Get()->IsValidContext(browser_context_id)) {
return;
}
content::BrowserContext* browser_context =
reinterpret_cast<content::BrowserContext*>(browser_context_id);
WarningService* warning_service = WarningService::Get(browser_context);
warning_service->AddWarnings(warnings);
}
void WarningService::AddObserver(Observer* observer) {
observer_list_.AddObserver(observer);
}
void WarningService::RemoveObserver(Observer* observer) {
observer_list_.RemoveObserver(observer);
}
void WarningService::NotifyWarningsChanged(
const ExtensionIdSet& affected_extensions) {
for (auto& observer : observer_list_)
observer.ExtensionWarningsChanged(affected_extensions);
}
void WarningService::OnExtensionUnloaded(
content::BrowserContext* browser_context,
const Extension* extension,
UnloadedExtensionReason reason) {
// Unloading one extension might have solved the problems of others.
// Therefore, we clear warnings of this type for all extensions.
std::set<Warning::WarningType> warning_types =
GetWarningTypesAffectingExtension(extension->id());
ClearWarnings(warning_types);
}
} // namespace extensions
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