chrome/browser/tab_contents/background_contents.h

   1 // Copyright (c) 2011 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_TAB_CONTENTS_BACKGROUND_CONTENTS_H_
   6 #define CHROME_BROWSER_TAB_CONTENTS_BACKGROUND_CONTENTS_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "content/public/browser/notification_observer.h"
  12 #include "content/public/browser/notification_registrar.h"
  13 #include "content/public/browser/web_contents_delegate.h"
  14 #include "content/public/browser/web_contents_observer.h"
  15 #include "ui/base/window_open_disposition.h"
  16
  17 class Profile;
  18
  19 namespace content {
  20 class SessionStorageNamespace;
  21 class SiteInstance;
  22 };
  23
  24 // This class consumes WebContents. It can host a renderer, but does not
  25 // have any visible display.
  26 class BackgroundContents : public content::WebContentsDelegate,
  27                            public content::WebContentsObserver,
  28                            public content::NotificationObserver {
  29  public:
  30   class Delegate {
  31    public:
  32     // Called by AddNewContents(). Asks the delegate to attach the opened
  33     // WebContents to a suitable container (e.g. browser) or to show it if it's
  34     // a popup window. If |was_blocked| is non-NULL, then |*was_blocked| will be
  35     // set to true if the popup gets blocked, and left unchanged otherwise.
  36     virtual void AddWebContents(content::WebContents* new_contents,
  37                                 WindowOpenDisposition disposition,
  38                                 const gfx::Rect& initial_pos,
  39                                 bool user_gesture,
  40                                 bool* was_blocked) = 0;
  41
  42    protected:
  43     virtual ~Delegate() {}
  44   };
  45
  46   BackgroundContents(
  47       content::SiteInstance* site_instance,
  48       int routing_id,
  49       Delegate* delegate,
  50       const std::string& partition_id,
  51       content::SessionStorageNamespace* session_storage_namespace);
  52   virtual ~BackgroundContents();
  53
  54   content::WebContents* web_contents() const { return web_contents_.get(); }
  55   virtual const GURL& GetURL() const;
  56
  57   // content::WebContentsDelegate implementation:
  58   virtual void CloseContents(content::WebContents* source) OVERRIDE;
  59   virtual bool ShouldSuppressDialogs() OVERRIDE;
  60   virtual void DidNavigateMainFramePostCommit(
  61       content::WebContents* tab) OVERRIDE;
  62   virtual void AddNewContents(content::WebContents* source,
  63                               content::WebContents* new_contents,
  64                               WindowOpenDisposition disposition,
  65                               const gfx::Rect& initial_pos,
  66                               bool user_gesture,
  67                               bool* was_blocked) OVERRIDE;
  68
  69   // content::WebContentsObserver implementation:
  70   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
  71
  72   // content::NotificationObserver
  73   virtual void Observe(int type,
  74                        const content::NotificationSource& source,
  75                        const content::NotificationDetails& details) OVERRIDE;
  76
  77  protected:
  78   // Exposed for testing.
  79   BackgroundContents();
  80
  81  private:
  82   // The delegate for this BackgroundContents.
  83   Delegate* delegate_;
  84
  85   Profile* profile_;
  86   scoped_ptr<content::WebContents> web_contents_;
  87   content::NotificationRegistrar registrar_;
  88
  89   DISALLOW_COPY_AND_ASSIGN(BackgroundContents);
  90 };
  91
  92 // This is the data sent out as the details with BACKGROUND_CONTENTS_OPENED.
  93 struct BackgroundContentsOpenedDetails {
  94   // The BackgroundContents object that has just been opened.
  95   BackgroundContents* contents;
  96
  97   // The name of the parent frame for these contents.
  98   const base::string16& frame_name;
  99
 100   // The ID of the parent application (if any).
 101   const base::string16& application_id;
 102 };
 103
 104 #endif  // CHROME_BROWSER_TAB_CONTENTS_BACKGROUND_CONTENTS_H_