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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.
#include "chrome/browser/notifications/notification_ui_manager.h"
#include "base/logging.h"
#include "base/scoped_ptr.h"
#include "base/stl_util-inl.h"
#include "chrome/browser/notifications/balloon_collection.h"
#include "chrome/browser/notifications/notification.h"
#include "chrome/browser/renderer_host/site_instance.h"
// A class which represents a notification waiting to be shown.
class QueuedNotification {
public:
QueuedNotification(const Notification& notification, Profile* profile)
: notification_(notification),
profile_(profile) {
}
const Notification& notification() const { return notification_; }
Profile* profile() const { return profile_; }
void Replace(const Notification& new_notification) {
notification_ = new_notification;
}
private:
// The notification to be shown.
Notification notification_;
// Non owned pointer to the user's profile.
Profile* profile_;
DISALLOW_COPY_AND_ASSIGN(QueuedNotification);
};
NotificationUIManager::NotificationUIManager()
: balloon_collection_(NULL) {
}
NotificationUIManager::~NotificationUIManager() {
STLDeleteElements(&show_queue_);
}
// static
NotificationUIManager* NotificationUIManager::Create() {
BalloonCollection* balloons = BalloonCollection::Create();
NotificationUIManager* instance = new NotificationUIManager();
instance->Initialize(balloons);
balloons->set_space_change_listener(instance);
return instance;
}
void NotificationUIManager::Add(const Notification& notification,
Profile* profile) {
if (TryReplacement(notification)) {
return;
}
VLOG(1) << "Added notification. URL: "
<< notification.content_url().spec();
show_queue_.push_back(
new QueuedNotification(notification, profile));
CheckAndShowNotifications();
}
bool NotificationUIManager::Cancel(const Notification& notification) {
// First look through the notifications that haven't been shown. If not
// found there, call to the active balloon collection to tear it down.
NotificationDeque::iterator iter;
for (iter = show_queue_.begin(); iter != show_queue_.end(); ++iter) {
if (notification.IsSame((*iter)->notification())) {
show_queue_.erase(iter);
return true;
}
}
return balloon_collection_->Remove(notification);
}
void NotificationUIManager::CheckAndShowNotifications() {
// TODO(johnnyg): http://crbug.com/25061 - Check for user idle/presentation.
ShowNotifications();
}
void NotificationUIManager::ShowNotifications() {
while (!show_queue_.empty() && balloon_collection_->HasSpace()) {
scoped_ptr<QueuedNotification> queued_notification(show_queue_.front());
show_queue_.pop_front();
balloon_collection_->Add(queued_notification->notification(),
queued_notification->profile());
}
}
void NotificationUIManager::OnBalloonSpaceChanged() {
CheckAndShowNotifications();
}
bool NotificationUIManager::TryReplacement(const Notification& notification) {
const GURL& origin = notification.origin_url();
const string16& replace_id = notification.replace_id();
if (replace_id.empty())
return false;
// First check the queue of pending notifications for replacement.
// Then check the list of notifications already being shown.
NotificationDeque::iterator iter;
for (iter = show_queue_.begin(); iter != show_queue_.end(); ++iter) {
if (origin == (*iter)->notification().origin_url() &&
replace_id == (*iter)->notification().replace_id()) {
(*iter)->Replace(notification);
return true;
}
}
BalloonCollection::Balloons::iterator balloon_iter;
BalloonCollection::Balloons balloons =
balloon_collection_->GetActiveBalloons();
for (balloon_iter = balloons.begin();
balloon_iter != balloons.end();
++balloon_iter) {
if (origin == (*balloon_iter)->notification().origin_url() &&
replace_id == (*balloon_iter)->notification().replace_id()) {
(*balloon_iter)->Update(notification);
return true;
}
}
return false;
}
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