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// Copyright 2015 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 "chrome/browser/media/router/issue_manager.h"
#include <algorithm>
namespace media_router {
IssueManager::IssueManager() {
}
IssueManager::~IssueManager() {
}
void IssueManager::AddIssue(const Issue& issue) {
DCHECK(thread_checker_.CalledOnValidThread());
for (const Issue& next_issue : issues_) {
if (next_issue.Equals(issue)) {
return;
}
}
issues_.push_back(issue);
MaybeUpdateTopIssue();
}
void IssueManager::ClearIssue(const Issue::Id& issue_id) {
DCHECK(thread_checker_.CalledOnValidThread());
issues_.erase(std::remove_if(issues_.begin(), issues_.end(),
[&issue_id](const Issue& issue) {
return issue_id == issue.id();
}),
issues_.end());
MaybeUpdateTopIssue();
}
size_t IssueManager::GetIssueCount() const {
DCHECK(thread_checker_.CalledOnValidThread());
return issues_.size();
}
void IssueManager::ClearAllIssues() {
DCHECK(thread_checker_.CalledOnValidThread());
issues_.clear();
MaybeUpdateTopIssue();
}
void IssueManager::ClearGlobalIssues() {
DCHECK(thread_checker_.CalledOnValidThread());
issues_.erase(
std::remove_if(issues_.begin(), issues_.end(), [](const Issue& issue) {
return issue.is_global();
}), issues_.end());
MaybeUpdateTopIssue();
}
void IssueManager::ClearIssuesWithRouteId(const MediaRoute::Id& route_id) {
DCHECK(thread_checker_.CalledOnValidThread());
issues_.erase(std::remove_if(issues_.begin(), issues_.end(),
[&route_id](const Issue& issue) {
return route_id == issue.route_id();
}),
issues_.end());
MaybeUpdateTopIssue();
}
void IssueManager::RegisterObserver(IssuesObserver* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(observer);
DCHECK(!issues_observers_.HasObserver(observer));
issues_observers_.AddObserver(observer);
if (!top_issue_id_.empty()) {
// Find the current top issue and report it to the observer.
for (const auto& next_issue : issues_) {
if (next_issue.id() == top_issue_id_) {
observer->OnIssueUpdated(&next_issue);
}
}
}
}
void IssueManager::UnregisterObserver(IssuesObserver* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
issues_observers_.RemoveObserver(observer);
}
void IssueManager::MaybeUpdateTopIssue() {
if (issues_.empty()) {
return;
}
// Select the first blocking issue in the list of issues.
// If there are none, simply select the first issue in the list.
Issue* new_top_issue = &(issues_.front());
for (auto it = issues_.begin(); it != issues_.end(); ++it) {
// The first blocking issue is of higher priority than the first issue.
if (it->is_blocking()) {
new_top_issue = &(*it);
break;
}
}
// If we've found a new top issue, then report it via the observer.
if (new_top_issue->id() != top_issue_id_) {
top_issue_id_ = new_top_issue->id();
FOR_EACH_OBSERVER(IssuesObserver, issues_observers_,
OnIssueUpdated(new_top_issue));
}
}
} // namespace media_router
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