chrome/browser/ui/omnibox/omnibox_current_page_delegate.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_UI_OMNIBOX_OMNIBOX_CURRENT_PAGE_DELEGATE_H_
   6 #define CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_CURRENT_PAGE_DELEGATE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ui/base/window_open_disposition.h"
  10
  11 class GURL;
  12 class SessionID;
  13 class TemplateURL;
  14 struct AutocompleteMatch;
  15
  16 namespace content {
  17 class NavigationController;
  18 }
  19
  20 // A class that abstracts omnibox functionality that depends on the current
  21 // tab/page (e.g., getting information about the current page, retrieving
  22 // objects associated with the current tab, or performing operations that rely
  23 // on such objects under the hood).
  24 class OmniboxCurrentPageDelegate {
  25  public:
  26   virtual ~OmniboxCurrentPageDelegate() {}
  27
  28   // Returns whether there is any associated current page.  For example, during
  29   // startup or shutdown, the omnibox may exist but have no attached page.
  30   virtual bool CurrentPageExists() const = 0;
  31
  32   // Returns the URL of the current page.
  33   virtual const GURL& GetURL() const = 0;
  34
  35   // Returns true if the visible entry is a New Tab Page rendered by Instant.
  36   virtual bool IsInstantNTP() const = 0;
  37
  38   // Returns true if the committed entry is a search results page.
  39   virtual bool IsSearchResultsPage() const = 0;
  40
  41   // Returns whether the current page is loading.
  42   virtual bool IsLoading() const = 0;
  43
  44   // Returns the NavigationController for the current page.
  45   virtual content::NavigationController& GetNavigationController() const = 0;
  46
  47   // Returns the session ID of the current page.
  48   virtual const SessionID& GetSessionID() const = 0;
  49
  50   // Checks whether |template_url| is an extension keyword; if so, asks the
  51   // ExtensionOmniboxEventRouter to process |match| for it and returns true.
  52   // Otherwise returns false.
  53   virtual bool ProcessExtensionKeyword(TemplateURL* template_url,
  54                                        const AutocompleteMatch& match,
  55                                        WindowOpenDisposition disposition) = 0;
  56
  57   // Notifies the SearchTabHelper, if one exists, of relevant changes to the
  58   // omnibox state.
  59   virtual void NotifySearchTabHelper(bool user_input_in_progress,
  60                                      bool cancelling) = 0;
  61
  62   // Performs prerendering for |match|.
  63   virtual void DoPrerender(const AutocompleteMatch& match) = 0;
  64 };
  65
  66 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_CURRENT_PAGE_DELEGATE_H_