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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.
// Handles the visible notification (or balloons).
#ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_H_
#define CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_H_
#include <deque>
class Balloon;
class Notification;
class Profile;
namespace gfx {
class Size;
} // namespace gfx
class BalloonCollection {
public:
class BalloonSpaceChangeListener {
public:
virtual ~BalloonSpaceChangeListener() {}
// Called when there is more or less space for balloons due to
// monitor size changes or balloons disappearing.
virtual void OnBalloonSpaceChanged() = 0;
};
static BalloonCollection* Create();
BalloonCollection()
: space_change_listener_(NULL) {
}
virtual ~BalloonCollection() {}
// Adds a new balloon for the specified notification.
virtual void Add(const Notification& notification,
Profile* profile) = 0;
// Removes a balloon from the collection if present. Returns
// true if anything was removed.
virtual bool Remove(const Notification& notification) = 0;
// Is there room to add another notification?
virtual bool HasSpace() const = 0;
// Request the resizing of a balloon.
virtual void ResizeBalloon(Balloon* balloon, const gfx::Size& size) = 0;
// Update for new screen dimensions.
virtual void DisplayChanged() = 0;
// Inform the collection that a balloon was closed.
virtual void OnBalloonClosed(Balloon* source) = 0;
// Get const collection of the active balloons.
typedef std::deque<Balloon*> Balloons;
virtual const Balloons& GetActiveBalloons() = 0;
BalloonSpaceChangeListener* space_change_listener() {
return space_change_listener_;
}
void set_space_change_listener(BalloonSpaceChangeListener* listener) {
space_change_listener_ = listener;
}
protected:
// Non-owned pointer to an object listening for space changes.
BalloonSpaceChangeListener* space_change_listener_;
};
#endif // CHROME_BROWSER_NOTIFICATIONS_BALLOON_COLLECTION_H_
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