Split InfoBarService core code into InfoBarManager

chrome/browser/infobars/infobar_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_INFOBARS_INFOBAR_SERVICE_H_
 #define CHROME_BROWSER_INFOBARS_INFOBAR_SERVICE_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/observer_list.h"
+#include "chrome/browser/infobars/infobar_manager.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 
+namespace content {
+struct LoadCommittedDetails;
+class WebContents;
+}
+
 class InfoBar;
 
-// Provides access to creating, removing and enumerating info bars
-// attached to a tab.
+// Associates a Tab to a InfoBarManager and manages its lifetime.
+// It manages the infobar notifications and responds to navigation events.
 class InfoBarService : public content::WebContentsObserver,
-                       public content::WebContentsUserData<InfoBarService> {
+                       public content::WebContentsUserData<InfoBarService>,
+                       public InfoBarManager::Observer {
  public:
 
-  // Observer class for infobar events.
-  class Observer {
-   public:
-    virtual void OnInfoBarAdded(InfoBar* infobar) = 0;
-    virtual void OnInfoBarRemoved(InfoBar* infobar, bool animate) = 0;
-    virtual void OnInfoBarReplaced(InfoBar* old_infobar,
-                                   InfoBar* new_infobar) = 0;
-    virtual void OnServiceShuttingDown(InfoBarService* service) = 0;
-  };
+  // Helper function to get the InfoBarManager attached to |web_contents|.
+  static InfoBarManager* InfoBarManagerFromWebContents(
+      content::WebContents* web_contents);
 
-  // Adds the specified |infobar|, which already owns a delegate.
-  //
-  // If infobars are disabled for this tab or the tab already has an infobar
-  // whose delegate returns true for
-  // InfoBarDelegate::EqualsDelegate(infobar->delegate()), |infobar| is deleted
-  // immediately without being added.
-  //
-  // Returns the infobar if it was successfully added.
-  virtual InfoBar* AddInfoBar(scoped_ptr<InfoBar> infobar);
-
-  // Removes the specified |infobar|.  This in turn may close immediately or
-  // animate closed; at the end the infobar will delete itself.
-  //
-  // If infobars are disabled for this tab, this will do nothing, on the
-  // assumption that the matching AddInfoBar() call will have already deleted
-  // the infobar (see above).
-  void RemoveInfoBar(InfoBar* infobar);
-
-  // Replaces one infobar with another, without any animation in between.  This
-  // will result in |old_infobar| being synchronously deleted.
-  //
-  // If infobars are disabled for this tab, |new_infobar| is deleted immediately
-  // without being added, and nothing else happens.
-  //
-  // Returns the new infobar if it was successfully added.
-  //
-  // NOTE: This does not perform any EqualsDelegate() checks like AddInfoBar().
+  // These methods are simple pass-throughs to InfoBarManager, and are here to
+  // prepare for the componentization of Infobars, see http://crbug.com/354379.
+  InfoBar* AddInfoBar(scoped_ptr<InfoBar> infobar);
   InfoBar* ReplaceInfoBar(InfoBar* old_infobar,
                           scoped_ptr<InfoBar> new_infobar);
 
-  // Returns the number of infobars for this tab.
-  size_t infobar_count() const { return infobars_.size(); }
-
-  // Returns the infobar at the given |index|.  The InfoBarService retains
-  // ownership.
-  //
-  // Warning: Does not sanity check |index|.
-  InfoBar* infobar_at(size_t index) { return infobars_[index]; }
-
   // Retrieve the WebContents for the tab this service is associated with.
   content::WebContents* web_contents() {
     return content::WebContentsObserver::web_contents();
   }
 
-  void AddObserver(Observer* obs);
-  void RemoveObserver(Observer* obs);
+  InfoBarManager* infobar_manager() { return &infobar_manager_; }
 
  private:
   friend class content::WebContentsUserData<InfoBarService>;
 
-  // InfoBars associated with this InfoBarService.  We own these pointers.
-  // However, this is not a ScopedVector, because we don't delete the infobars
-  // directly once they've been added to this; instead, when we're done with an
-  // infobar, we instruct it to delete itself and then orphan it.  See
-  // RemoveInfoBarInternal().
-  typedef std::vector<InfoBar*> InfoBars;
-
   explicit InfoBarService(content::WebContents* web_contents);
   virtual ~InfoBarService();
 
   // content::WebContentsObserver:
   virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
   virtual void NavigationEntryCommitted(
       const content::LoadCommittedDetails& load_details) OVERRIDE;
   virtual void WebContentsDestroyed(
       content::WebContents* web_contents) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
-  void RemoveInfoBarInternal(InfoBar* infobar, bool animate);
-  void RemoveAllInfoBars(bool animate);
+  // InfoBarManager::Observer:
+  virtual void OnInfoBarAdded(InfoBar* infobar) OVERRIDE;
+  virtual void OnInfoBarReplaced(InfoBar* old_infobar,
+                                 InfoBar* new_infobar) OVERRIDE;
+  virtual void OnInfoBarRemoved(InfoBar* infobar, bool animate) OVERRIDE;
+  virtual void OnManagerShuttingDown(InfoBarManager* manager) OVERRIDE;
 
   // Message handlers.
   void OnDidBlockDisplayingInsecureContent();
   void OnDidBlockRunningInsecureContent();
 
-  InfoBars infobars_;
-  bool infobars_enabled_;
-  ObserverList<Observer, true> observer_list_;
+  InfoBarManager infobar_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarService);
 };
 
 #endif  // CHROME_BROWSER_INFOBARS_INFOBAR_SERVICE_H_