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// Copyright (c) 2012 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_PLUGIN_INSTALLER_OBSERVER_H_
#define CHROME_BROWSER_PLUGIN_INSTALLER_OBSERVER_H_
#pragma once
#include <string>
class PluginInstaller;
class PluginInstallerObserver {
public:
explicit PluginInstallerObserver(PluginInstaller* installer);
virtual ~PluginInstallerObserver();
protected:
PluginInstaller* installer() const { return installer_; }
private:
friend class PluginInstaller;
virtual void DownloadStarted();
virtual void DownloadFinished();
virtual void DownloadError(const std::string& message);
virtual void DownloadCancelled();
// Weak pointer; Owned by PluginFinder, which is a singleton.
PluginInstaller* installer_;
};
// A WeakPluginInstallerObserver is like a weak pointer to the installer, in the
// sense that if only weak observers are left, we don't need to show
// installation UI anymore.
class WeakPluginInstallerObserver : public PluginInstallerObserver {
public:
explicit WeakPluginInstallerObserver(PluginInstaller* installer);
virtual ~WeakPluginInstallerObserver();
private:
friend class PluginInstaller;
virtual void OnlyWeakObserversLeft();
};
#endif // CHROME_BROWSER_PLUGIN_INSTALLER_OBSERVER_H_
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