content/public/browser/page_navigator.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 // PageNavigator defines an interface that can be used to express the user's
   6 // intention to navigate to a particular URL.  The implementing class should
   7 // perform the navigation.
   8
   9 #ifndef CONTENT_PUBLIC_BROWSER_PAGE_NAVIGATOR_H_
  10 #define CONTENT_PUBLIC_BROWSER_PAGE_NAVIGATOR_H_
  11
  12 #include <string>
  13
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/ref_counted_memory.h"
  16 #include "content/common/content_export.h"
  17 #include "content/public/browser/global_request_id.h"
  18 #include "content/public/browser/site_instance.h"
  19 #include "content/public/common/referrer.h"
  20 #include "ui/base/page_transition_types.h"
  21 #include "ui/base/window_open_disposition.h"
  22 #include "url/gurl.h"
  23
  24 namespace content {
  25
  26 class WebContents;
  27
  28 struct CONTENT_EXPORT OpenURLParams {
  29   OpenURLParams(const GURL& url,
  30                 const Referrer& referrer,
  31                 WindowOpenDisposition disposition,
  32                 ui::PageTransition transition,
  33                 bool is_renderer_initiated);
  34   OpenURLParams(const GURL& url,
  35                 const Referrer& referrer,
  36                 int64 frame_tree_node_id,
  37                 WindowOpenDisposition disposition,
  38                 ui::PageTransition transition,
  39                 bool is_renderer_initiated);
  40   ~OpenURLParams();
  41
  42   // The URL/referrer to be opened.
  43   GURL url;
  44   Referrer referrer;
  45
  46   // SiteInstance of the frame that initiated the navigation or null if we
  47   // don't know it.
  48   scoped_refptr<content::SiteInstance> source_site_instance;
  49
  50   // Any redirect URLs that occurred for this navigation before |url|.
  51   std::vector<GURL> redirect_chain;
  52
  53   // Indicates whether this navigation will be sent using POST.
  54   // The POST method is limited support for basic POST data by leveraging
  55   // NavigationController::LOAD_TYPE_BROWSER_INITIATED_HTTP_POST.
  56   // It is not for things like file uploads.
  57   bool uses_post;
  58
  59   // The post data when the navigation uses POST.
  60   scoped_refptr<base::RefCountedMemory> browser_initiated_post_data;
  61
  62   // Extra headers to add to the request for this page.  Headers are
  63   // represented as "<name>: <value>" and separated by \r\n.  The entire string
  64   // is terminated by \r\n.  May be empty if no extra headers are needed.
  65   std::string extra_headers;
  66
  67   // The browser-global FrameTreeNode ID or -1 to indicate the main frame.
  68   int64 frame_tree_node_id;
  69
  70   // The disposition requested by the navigation source.
  71   WindowOpenDisposition disposition;
  72
  73   // The transition type of navigation.
  74   ui::PageTransition transition;
  75
  76   // Whether this navigation is initiated by the renderer process.
  77   bool is_renderer_initiated;
  78
  79   // Reference to the old request id in case this is a navigation that is being
  80   // transferred to a new renderer.
  81   GlobalRequestID transferred_global_request_id;
  82
  83   // Indicates whether this navigation should replace the current
  84   // navigation entry.
  85   bool should_replace_current_entry;
  86
  87   // Indicates whether this navigation was triggered while processing a user
  88   // gesture if the navigation was initiated by the renderer.
  89   bool user_gesture;
  90
  91  private:
  92   OpenURLParams();
  93 };
  94
  95 class PageNavigator {
  96  public:
  97   virtual ~PageNavigator() {}
  98
  99   // Opens a URL with the given disposition.  The transition specifies how this
 100   // navigation should be recorded in the history system (for example, typed).
 101   // Returns the WebContents the URL is opened in, or nullptr if the URL wasn't
 102   // opened immediately.
 103   virtual WebContents* OpenURL(const OpenURLParams& params) = 0;
 104 };
 105
 106 }  // namespace content
 107
 108 #endif  // CONTENT_PUBLIC_BROWSER_PAGE_NAVIGATOR_H_