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// Copyright (c) 2011 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.
#ifndef CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_CONTAINER_H_
#define CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_CONTAINER_H_
#pragma once
#include <set>
#include "base/compiler_specific.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
class InfoBar;
class InfoBarDelegate;
class TabContents;
// InfoBarContainer is a cross-platform base class to handle the visibility-
// related aspects of InfoBars. While InfoBars own themselves, the
// InfoBarContainer is responsible for telling particular InfoBars that they
// should be hidden or visible.
//
// Platforms need to subclass this to implement a few platform-specific
// functions, which are pure virtual here.
class InfoBarContainer : public NotificationObserver {
public:
// The delegate is notified each time InfoBarContainer::OnInfoBarAnimated() is
// called.
class Delegate {
public:
virtual void InfoBarContainerSizeChanged(bool is_animating) = 0;
protected:
virtual ~Delegate();
};
explicit InfoBarContainer(Delegate* delegate);
virtual ~InfoBarContainer();
// Changes the TabContents for which this container is showing infobars. This
// will remove all current infobars from the container, add the infobars from
// |contents|, and show them all. |contents| may be NULL.
void ChangeTabContents(TabContents* contents);
// Called when a contained infobar has animated. The container is expected to
// do anything necessary to respond to the infobar's possible size change,
// e.g. re-layout.
void OnInfoBarAnimated(bool done);
// Remove the specified InfoBarDelegate from the selected TabContents. This
// will notify us back and cause us to close the InfoBar. This is called from
// the InfoBar's close button handler.
void RemoveDelegate(InfoBarDelegate* delegate);
// Called by |infobar| to request that it be removed from the container, as it
// is about to delete itself. At this point, |infobar| should already be
// hidden.
void RemoveInfoBar(InfoBar* infobar);
protected:
// These must be implemented on each platform to e.g. adjust the visible
// object hierarchy.
virtual void PlatformSpecificAddInfoBar(InfoBar* infobar) = 0;
virtual void PlatformSpecificRemoveInfoBar(InfoBar* infobar) = 0;
private:
typedef std::set<InfoBar*> InfoBars;
// NotificationObserver:
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) OVERRIDE;
// Removes an InfoBar for the specified delegate, in response to a
// notification from the selected TabContents. The InfoBar's disappearance
// will be animated if |use_animation| is true.
void RemoveInfoBar(InfoBarDelegate* delegate, bool use_animation);
// Adds |infobar| to this container and calls Show() on it. |animate| is
// passed along to infobar->Show(). Depending on the value of
// |callback_status|, this calls infobar->set_container(this) either before or
// after the call to Show() so that OnInfoBarAnimated() either will or won't
// be called as a result.
enum CallbackStatus { NO_CALLBACK, WANT_CALLBACK };
void AddInfoBar(InfoBar* infobar,
bool animate,
CallbackStatus callback_status);
NotificationRegistrar registrar_;
Delegate* delegate_;
TabContents* tab_contents_;
InfoBars infobars_;
DISALLOW_COPY_AND_ASSIGN(InfoBarContainer);
};
#endif // CHROME_BROWSER_UI_VIEWS_INFOBARS_INFOBAR_CONTAINER_H_
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