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// Copyright 2014 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.
#include "components/password_manager/core/browser/log_router.h"
#include "base/stl_util.h"
#include "components/password_manager/core/browser/log_manager.h"
#include "components/password_manager/core/browser/log_receiver.h"
namespace password_manager {
LogRouter::LogRouter() = default;
LogRouter::~LogRouter() = default;
void LogRouter::ProcessLog(const std::string& text) {
// This may not be called when there are no receivers (i.e., the router is
// inactive), because in that case the logs cannot be displayed.
DCHECK(receivers_.might_have_observers());
accumulated_logs_.append(text);
for (LogReceiver& receiver : receivers_)
receiver.LogSavePasswordProgress(text);
}
bool LogRouter::RegisterManager(LogManager* manager) {
DCHECK(manager);
managers_.AddObserver(manager);
return receivers_.might_have_observers();
}
void LogRouter::UnregisterManager(LogManager* manager) {
DCHECK(managers_.HasObserver(manager));
managers_.RemoveObserver(manager);
}
std::string LogRouter::RegisterReceiver(LogReceiver* receiver) {
DCHECK(receiver);
DCHECK(accumulated_logs_.empty() || receivers_.might_have_observers());
if (!receivers_.might_have_observers()) {
for (LogManager& manager : managers_)
manager.OnLogRouterAvailabilityChanged(true);
}
receivers_.AddObserver(receiver);
return accumulated_logs_;
}
void LogRouter::UnregisterReceiver(LogReceiver* receiver) {
DCHECK(receivers_.HasObserver(receiver));
receivers_.RemoveObserver(receiver);
if (!receivers_.might_have_observers()) {
// |accumulated_logs_| can become very long; use the swap instead of clear()
// to ensure that the memory is freed.
std::string().swap(accumulated_logs_);
for (LogManager& manager : managers_)
manager.OnLogRouterAvailabilityChanged(false);
}
}
} // namespace password_manager
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