chrome/browser/extensions/location_bar_controller.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_EXTENSIONS_LOCATION_BAR_CONTROLLER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_LOCATION_BAR_CONTROLLER_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/macros.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/scoped_observer.h"
  14 #include "extensions/browser/extension_registry_observer.h"
  15
  16 class ExtensionAction;
  17
  18 namespace content {
  19 class WebContents;
  20 class BrowserContext;
  21 }
  22
  23 namespace extensions {
  24 class Extension;
  25 class ExtensionActionManager;
  26 class ExtensionRegistry;
  27
  28 // Provides the UI with the current page actions for extensions. The execution
  29 // of these actions is handled in the ExtensionActionAPI.
  30 class LocationBarController : public ExtensionRegistryObserver {
  31  public:
  32   explicit LocationBarController(content::WebContents* web_contents);
  33   ~LocationBarController() override;
  34
  35   // Returns the actions which should be displayed in the location bar.
  36   std::vector<ExtensionAction*> GetCurrentActions();
  37
  38  private:
  39   // ExtensionRegistryObserver implementation.
  40   void OnExtensionLoaded(content::BrowserContext* browser_context,
  41                          const Extension* extension) override;
  42   void OnExtensionUnloaded(content::BrowserContext* browser_context,
  43                            const Extension* extension,
  44                            UnloadedExtensionInfo::Reason reason) override;
  45
  46   // The associated WebContents.
  47   content::WebContents* web_contents_;
  48
  49   // The associated BrowserContext.
  50   content::BrowserContext* browser_context_;
  51
  52   // The ExtensionActionManager to provide page actions.
  53   ExtensionActionManager* action_manager_;
  54
  55   // Whether or not to show page actions in the location bar at all. (This is
  56   // false with the toolbar redesign enabled.)
  57   bool should_show_page_actions_;
  58
  59   // Manufactured page actions that have been generated for extensions that want
  60   // to run a script, but were blocked.
  61   typedef std::map<std::string, linked_ptr<ExtensionAction> >
  62       ExtensionActionMap;
  63   ExtensionActionMap active_script_actions_;
  64
  65   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
  66       extension_registry_observer_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(LocationBarController);
  69 };
  70
  71 }  // namespace extensions
  72
  73 #endif  // CHROME_BROWSER_EXTENSIONS_LOCATION_BAR_CONTROLLER_H_