chrome/browser/plugins/plugin_installer.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_PLUGINS_PLUGIN_INSTALLER_H_
   6 #define CHROME_BROWSER_PLUGINS_PLUGIN_INSTALLER_H_
   7
   8 #include "base/observer_list.h"
   9 #include "base/strings/string16.h"
  10 #include "base/version.h"
  11 #include "chrome/browser/plugins/plugin_metadata.h"
  12 #include "content/public/browser/download_item.h"
  13 #include "net/base/net_errors.h"
  14 #include "url/gurl.h"
  15
  16 class PluginInstallerObserver;
  17 class WeakPluginInstallerObserver;
  18
  19 namespace content {
  20 class WebContents;
  21 struct WebPluginInfo;
  22 }
  23
  24 class PluginInstaller : public content::DownloadItem::Observer {
  25  public:
  26   enum InstallerState {
  27     INSTALLER_STATE_IDLE,
  28     INSTALLER_STATE_DOWNLOADING,
  29   };
  30
  31   PluginInstaller();
  32   virtual ~PluginInstaller();
  33
  34   virtual void OnDownloadUpdated(content::DownloadItem* download) OVERRIDE;
  35   virtual void OnDownloadDestroyed(content::DownloadItem* download) OVERRIDE;
  36
  37   void AddObserver(PluginInstallerObserver* observer);
  38   void RemoveObserver(PluginInstallerObserver* observer);
  39
  40   void AddWeakObserver(WeakPluginInstallerObserver* observer);
  41   void RemoveWeakObserver(WeakPluginInstallerObserver* observer);
  42
  43   InstallerState state() const { return state_; }
  44
  45   // Opens the download URL in a new tab.
  46   void OpenDownloadURL(const GURL& plugin_url,
  47                        content::WebContents* web_contents);
  48
  49   // Starts downloading the download URL and opens the downloaded file
  50   // when finished.
  51   void StartInstalling(const GURL& plugin_url,
  52                        content::WebContents* web_contents);
  53
  54  private:
  55   void DownloadStarted(content::DownloadItem* item, net::Error error);
  56   void DownloadError(const std::string& msg);
  57   void DownloadCancelled();
  58
  59   InstallerState state_;
  60   ObserverList<PluginInstallerObserver> observers_;
  61   int strong_observer_count_;
  62   ObserverList<WeakPluginInstallerObserver> weak_observers_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(PluginInstaller);
  65 };
  66
  67 #endif  // CHROME_BROWSER_PLUGINS_PLUGIN_INSTALLER_H_