src/chrome/browser/apps/ephemeral_app_launcher.h

   1 // Copyright 2013 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_APPS_EPHEMERAL_APP_LAUNCHER_H_
   6 #define CHROME_BROWSER_APPS_EPHEMERAL_APP_LAUNCHER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback.h"
  13 #include "base/scoped_observer.h"
  14 #include "chrome/browser/extensions/webstore_standalone_installer.h"
  15 #include "chrome/browser/ui/extensions/extension_enable_flow_delegate.h"
  16 #include "content/public/browser/web_contents_observer.h"
  17
  18 class ExtensionEnableFlow;
  19 class Profile;
  20
  21 namespace content {
  22 class WebContents;
  23 }
  24
  25 namespace extensions {
  26 class Extension;
  27 class ExtensionInstallChecker;
  28 class ExtensionRegistry;
  29 }
  30
  31 // EphemeralAppLauncher manages the launching of ephemeral apps. It handles
  32 // display of a prompt, initiates install of the app (if necessary) and finally
  33 // launches the app.
  34 class EphemeralAppLauncher : public extensions::WebstoreStandaloneInstaller,
  35                              public content::WebContentsObserver,
  36                              public ExtensionEnableFlowDelegate {
  37  public:
  38   typedef base::Callback<void(extensions::webstore_install::Result result,
  39                               const std::string& error)> LaunchCallback;
  40
  41   // Returns true if launching ephemeral apps is enabled.
  42   static bool IsFeatureEnabled();
  43
  44   // Create for the app launcher.
  45   static scoped_refptr<EphemeralAppLauncher> CreateForLauncher(
  46       const std::string& webstore_item_id,
  47       Profile* profile,
  48       gfx::NativeWindow parent_window,
  49       const LaunchCallback& callback);
  50
  51   // Create for a web contents.
  52   static scoped_refptr<EphemeralAppLauncher> CreateForWebContents(
  53       const std::string& webstore_item_id,
  54       content::WebContents* web_contents,
  55       const LaunchCallback& callback);
  56
  57   // Initiate app launch.
  58   void Start();
  59
  60  protected:
  61   EphemeralAppLauncher(const std::string& webstore_item_id,
  62                        Profile* profile,
  63                        gfx::NativeWindow parent_window,
  64                        const LaunchCallback& callback);
  65   EphemeralAppLauncher(const std::string& webstore_item_id,
  66                        content::WebContents* web_contents,
  67                        const LaunchCallback& callback);
  68
  69   ~EphemeralAppLauncher() override;
  70
  71   // Creates an install checker. Allows tests to mock the install checker.
  72   virtual scoped_ptr<extensions::ExtensionInstallChecker>
  73       CreateInstallChecker();
  74
  75   // WebstoreStandaloneInstaller implementation overridden in tests.
  76   scoped_ptr<ExtensionInstallPrompt> CreateInstallUI() override;
  77   scoped_ptr<extensions::WebstoreInstaller::Approval> CreateApproval()
  78       const override;
  79
  80  private:
  81   friend class base::RefCountedThreadSafe<EphemeralAppLauncher>;
  82   friend class EphemeralAppLauncherTest;
  83
  84   // Returns true if an app that is already installed in extension system can
  85   // be launched.
  86   bool CanLaunchInstalledApp(const extensions::Extension* extension,
  87                              extensions::webstore_install::Result* reason,
  88                              std::string* error);
  89
  90   // Initiates the enable flow for an app before it can be launched.
  91   void EnableInstalledApp(const extensions::Extension* extension);
  92
  93   // After the ephemeral installation or enable flow are complete, attempts to
  94   // launch the app and notify the client of the outcome.
  95   void MaybeLaunchApp();
  96
  97   // Launches an app. At this point, it is assumed that the app is enabled and
  98   // can be launched.
  99   void LaunchApp(const extensions::Extension* extension) const;
 100
 101   // Navigates to the launch URL of a hosted app in a new browser tab.
 102   bool LaunchHostedApp(const extensions::Extension* extension) const;
 103
 104   // Notifies the client of the launch outcome.
 105   void InvokeCallback(extensions::webstore_install::Result result,
 106                       const std::string& error);
 107
 108   // Aborts the ephemeral install and notifies the client of the outcome.
 109   void AbortLaunch(extensions::webstore_install::Result result,
 110                    const std::string& error);
 111
 112   // Determines whether the app can be installed ephemerally.
 113   void CheckEphemeralInstallPermitted();
 114
 115   // Install checker callback.
 116   void OnInstallChecked(int check_failures);
 117
 118   // WebstoreStandaloneInstaller implementation.
 119   void InitInstallData(
 120       extensions::ActiveInstallData* install_data) const override;
 121   bool CheckRequestorAlive() const override;
 122   const GURL& GetRequestorURL() const override;
 123   bool ShouldShowPostInstallUI() const override;
 124   bool ShouldShowAppInstalledBubble() const override;
 125   content::WebContents* GetWebContents() const override;
 126   scoped_refptr<ExtensionInstallPrompt::Prompt> CreateInstallPrompt()
 127       const override;
 128   bool CheckInlineInstallPermitted(const base::DictionaryValue& webstore_data,
 129                                    std::string* error) const override;
 130   bool CheckRequestorPermitted(const base::DictionaryValue& webstore_data,
 131                                std::string* error) const override;
 132   void OnManifestParsed() override;
 133   void CompleteInstall(extensions::webstore_install::Result result,
 134                        const std::string& error) override;
 135
 136   // content::WebContentsObserver implementation.
 137   void WebContentsDestroyed() override;
 138
 139   // ExtensionEnableFlowDelegate implementation.
 140   void ExtensionEnableFlowFinished() override;
 141   void ExtensionEnableFlowAborted(bool user_initiated) override;
 142
 143   LaunchCallback launch_callback_;
 144
 145   gfx::NativeWindow parent_window_;
 146   scoped_ptr<content::WebContents> dummy_web_contents_;
 147
 148   scoped_ptr<ExtensionEnableFlow> extension_enable_flow_;
 149
 150   scoped_ptr<extensions::ExtensionInstallChecker> install_checker_;
 151
 152   DISALLOW_COPY_AND_ASSIGN(EphemeralAppLauncher);
 153 };
 154
 155 #endif  // CHROME_BROWSER_APPS_EPHEMERAL_APP_LAUNCHER_H_