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// Copyright (c) 2009 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_H_
#define CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
#include <vector>
#include "base/basictypes.h"
#include "base/gfx/point.h"
#include "base/gfx/rect.h"
#include "base/gfx/size.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/notifications/notification.h"
class Balloon;
class BalloonCollection;
class Profile;
class SiteInstance;
// Interface for a view that displays a balloon.
class BalloonView {
public:
virtual ~BalloonView() { }
// Show the view on the screen.
virtual void Show(Balloon* balloon) = 0;
// Reposition the view to match the position of its balloon.
virtual void RepositionToBalloon() = 0;
// Close the view.
virtual void Close(bool by_user) = 0;
// The total size of the view.
virtual gfx::Size GetSize() const = 0;
};
// Represents a Notification on the screen.
class Balloon {
public:
Balloon(const Notification& notification,
Profile* profile,
BalloonCollection* collection);
virtual ~Balloon();
const Notification& notification() const { return notification_; }
Profile* profile() const { return profile_; }
const gfx::Point& position() const { return position_; }
void SetPosition(const gfx::Point& upper_left, bool reposition);
const gfx::Size& content_size() const { return content_size_; }
void set_content_size(const gfx::Size& size) { content_size_ = size; }
// Request a new content size for this balloon. This will get passed
// to the balloon collection for checking against available space and
// min/max restrictions.
void SetContentPreferredSize(const gfx::Size& size);
// Provides a view for this balloon. Ownership transfers
// to this object.
void set_view(BalloonView* balloon_view);
// Returns the viewing size for the balloon (content + frame).
gfx::Size GetViewSize() const { return balloon_view_->GetSize(); }
// Shows the balloon.
virtual void Show();
// Called when the balloon is closed, either by user (through the UI)
// or by a script.
virtual void OnClose(bool by_user);
// Called by script to cause the balloon to close.
virtual void CloseByScript();
private:
// Non-owned pointer to the profile.
Profile* profile_;
// The notification being shown in this balloon.
Notification notification_;
// The collection that this balloon belongs to. Non-owned pointer.
BalloonCollection* collection_;
// The actual UI element for the balloon.
scoped_ptr<BalloonView> balloon_view_;
// Position and size of the balloon on the screen.
gfx::Point position_;
gfx::Size content_size_;
DISALLOW_COPY_AND_ASSIGN(Balloon);
};
#endif // CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
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