chrome/browser/ui/webui/extensions/extension_loader_handler.h

   1 // Copyright 2014 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_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/macros.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "base/scoped_observer.h"
  17 #include "base/values.h"
  18 #include "chrome/browser/extensions/extension_error_reporter.h"
  19 #include "content/public/browser/navigation_controller.h"
  20 #include "content/public/browser/web_contents_observer.h"
  21 #include "content/public/browser/web_ui_message_handler.h"
  22
  23 namespace content {
  24 class WebUIDataSource;
  25 }
  26
  27 class Profile;
  28
  29 namespace extensions {
  30
  31 class Extension;
  32
  33 // The handler page for the Extension Commands UI overlay.
  34 class ExtensionLoaderHandler : public content::WebUIMessageHandler,
  35                                public ExtensionErrorReporter::Observer,
  36                                public content::WebContentsObserver {
  37  public:
  38   explicit ExtensionLoaderHandler(Profile* profile);
  39   ~ExtensionLoaderHandler() override;
  40
  41   // Fetches the localized values for the page and deposits them into |source|.
  42   void GetLocalizedValues(content::WebUIDataSource* source);
  43
  44   // WebUIMessageHandler implementation.
  45   void RegisterMessages() override;
  46
  47  private:
  48   // Handle the 'extensionLoaderRetry' message.
  49   void HandleRetry(const base::ListValue* args);
  50
  51   // Handle the 'extensionLoaderIgnoreFailure' message.
  52   void HandleIgnoreFailure(const base::ListValue* args);
  53
  54   // Handle the 'extensionLoaderDisplayFailures' message.
  55   void HandleDisplayFailures(const base::ListValue* args);
  56
  57   // Try to load an unpacked extension from the given |file_path|.
  58   void LoadUnpackedExtension(const base::FilePath& file_path);
  59
  60   // ExtensionErrorReporter::Observer:
  61   void OnLoadFailure(content::BrowserContext* browser_context,
  62                      const base::FilePath& file_path,
  63                      const std::string& error) override;
  64
  65   // content::WebContentsObserver:
  66   void DidStartNavigationToPendingEntry(
  67       const GURL& url,
  68       content::NavigationController::ReloadType reload_type) override;
  69
  70   // Add a failure to |failures_|. If it was a manifest error, |manifest| will
  71   // hold the manifest contents, and |line_number| will point to the line at
  72   // which the error was found.
  73   void AddFailure(const base::FilePath& file_path,
  74                   const std::string& error,
  75                   size_t line_number,
  76                   const std::string& manifest);
  77
  78   // Notify the frontend of all failures.
  79   void NotifyFrontendOfFailure();
  80
  81   // The profile with which this Handler is associated.
  82   Profile* profile_;
  83
  84   // Holds information about all unpacked extension install failures that
  85   // were reported while the extensions page was loading.
  86   base::ListValue failures_;
  87
  88   // Holds failed paths for load retries.
  89   std::vector<base::FilePath> failed_paths_;
  90
  91   ScopedObserver<ExtensionErrorReporter, ExtensionErrorReporter::Observer>
  92       extension_error_reporter_observer_;
  93
  94   // Set when the chrome://extensions page is fully loaded and the frontend is
  95   // ready to receive failure notifications. We need this because the page
  96   // fails to display failures if they are sent before the Javascript is loaded.
  97   bool ui_ready_;
  98
  99   // Weak pointer factory for posting background tasks.
 100   base::WeakPtrFactory<ExtensionLoaderHandler> weak_ptr_factory_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(ExtensionLoaderHandler);
 103 };
 104
 105 }  // namespace extensions
 106
 107 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_LOADER_HANDLER_H_