summaryrefslogtreecommitdiffstats
path: root/content/public/browser/navigation_entry.h
blob: 9345f0f8cac0be6bf65a2abb5944df96e60e6eb6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
// 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 CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_
#define CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_

#include <string>

#include "base/memory/ref_counted_memory.h"
#include "base/strings/string16.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
#include "content/public/common/page_type.h"
#include "content/public/common/referrer.h"
#include "ui/base/page_transition_types.h"

class GURL;

namespace content {

class PageState;
struct FaviconStatus;
struct SSLStatus;

// A NavigationEntry is a data structure that captures all the information
// required to recreate a browsing state. This includes some opaque binary
// state as provided by the WebContents as well as some clear text title and
// URL which is used for our user interface.
class NavigationEntry {
 public:
  virtual ~NavigationEntry() {}

  CONTENT_EXPORT static NavigationEntry* Create();

  // Page-related stuff --------------------------------------------------------

  // A unique ID is preserved across commits and redirects, which means that
  // sometimes a NavigationEntry's unique ID needs to be set (e.g. when
  // creating a committed entry to correspond to a to-be-deleted pending entry,
  // the pending entry's ID must be copied).
  virtual int GetUniqueID() const = 0;

  // The page type tells us if this entry is for an interstitial or error page.
  virtual content::PageType GetPageType() const = 0;

  // The actual URL of the page. For some about pages, this may be a scary
  // data: URL or something like that. Use GetVirtualURL() below for showing to
  // the user.
  virtual void SetURL(const GURL& url) = 0;
  virtual const GURL& GetURL() const = 0;

  // Used for specifying a base URL for pages loaded via data URLs.
  virtual void SetBaseURLForDataURL(const GURL& url) = 0;
  virtual const GURL& GetBaseURLForDataURL() const = 0;

  // The referring URL. Can be empty.
  virtual void SetReferrer(const content::Referrer& referrer) = 0;
  virtual const content::Referrer& GetReferrer() const = 0;

  // The virtual URL, when nonempty, will override the actual URL of the page
  // when we display it to the user. This allows us to have nice and friendly
  // URLs that the user sees for things like about: URLs, but actually feed
  // the renderer a data URL that results in the content loading.
  //
  // GetVirtualURL() will return the URL to display to the user in all cases, so
  // if there is no overridden display URL, it will return the actual one.
  virtual void SetVirtualURL(const GURL& url) = 0;
  virtual const GURL& GetVirtualURL() const = 0;

  // The title as set by the page. This will be empty if there is no title set.
  // The caller is responsible for detecting when there is no title and
  // displaying the appropriate "Untitled" label if this is being displayed to
  // the user.
  virtual void SetTitle(const base::string16& title) = 0;
  virtual const base::string16& GetTitle() const = 0;

  // Page state is an opaque blob created by Blink that represents the state of
  // the page. This includes form entries and scroll position for each frame.
  // We store it so that we can supply it back to Blink to restore form state
  // properly when the user goes back and forward.
  //
  // NOTE: This state is saved to disk and used to restore previous states.  If
  // the format is modified in the future, we should still be able to deal with
  // older versions.
  virtual void SetPageState(const PageState& state) = 0;
  virtual const PageState& GetPageState() const = 0;

  // Describes the current page that the tab represents. This is the ID that the
  // renderer generated for the page and is how we can tell new versus
  // renavigations.
  virtual void SetPageID(int page_id) = 0;
  virtual int32 GetPageID() const = 0;

  // Page-related helpers ------------------------------------------------------

  // Returns the title to be displayed on the tab. This could be the title of
  // the page if it is available or the URL. |languages| is the list of
  // accepted languages (e.g., prefs::kAcceptLanguages) or empty if proper
  // URL formatting isn't needed (e.g., unit tests).
  virtual const base::string16& GetTitleForDisplay(
      const std::string& languages) const = 0;

  // Returns true if the current tab is in view source mode. This will be false
  // if there is no navigation.
  virtual bool IsViewSourceMode() const = 0;

  // Tracking stuff ------------------------------------------------------------

  // The transition type indicates what the user did to move to this page from
  // the previous page.
  virtual void SetTransitionType(ui::PageTransition transition_type) = 0;
  virtual ui::PageTransition GetTransitionType() const = 0;

  // The user typed URL was the URL that the user initiated the navigation
  // with, regardless of any redirects. This is used to generate keywords, for
  // example, based on "what the user thinks the site is called" rather than
  // what it's actually called. For example, if the user types "foo.com", that
  // may redirect somewhere arbitrary like "bar.com/foo", and we want to use
  // the name that the user things of the site as having.
  //
  // This URL will be is_empty() if the URL was navigated to some other way.
  // Callers should fall back on using the regular or display URL in this case.
  virtual const GURL& GetUserTypedURL() const = 0;

  // Post data is form data that was posted to get to this page. The data will
  // have to be reposted to reload the page properly. This flag indicates
  // whether the page had post data.
  //
  // The actual post data is stored either in
  // 1) browser_initiated_post_data when a new post data request is started.
  // 2) content_state when a post request has started and is extracted by
  //    WebKit to actually make the request.
  virtual void SetHasPostData(bool has_post_data) = 0;
  virtual bool GetHasPostData() const = 0;

  // The Post identifier associated with the page.
  virtual void SetPostID(int64 post_id) = 0;
  virtual int64 GetPostID() const = 0;

  // Holds the raw post data of a browser initiated post request.
  // For efficiency, this should be cleared when content_state is populated
  // since the data is duplicated.
  // Note, this field:
  // 1) is not persisted in session restore.
  // 2) is shallow copied with the static copy Create method above.
  // 3) may be nullptr so check before use.
  virtual void SetBrowserInitiatedPostData(
      const base::RefCountedMemory* data) = 0;
  virtual const base::RefCountedMemory* GetBrowserInitiatedPostData() const = 0;

  // The favicon data and tracking information. See content::FaviconStatus.
  virtual const FaviconStatus& GetFavicon() const = 0;
  virtual FaviconStatus& GetFavicon() = 0;

  // All the SSL flags and state. See content::SSLStatus.
  virtual const SSLStatus& GetSSL() const = 0;
  virtual SSLStatus& GetSSL() = 0;

  // Store the URL that caused this NavigationEntry to be created.
  virtual void SetOriginalRequestURL(const GURL& original_url) = 0;
  virtual const GURL& GetOriginalRequestURL() const = 0;

  // Store whether or not we're overriding the user agent.
  virtual void SetIsOverridingUserAgent(bool override) = 0;
  virtual bool GetIsOverridingUserAgent() const = 0;

  // The time at which the last known local navigation has
  // completed. (A navigation can be completed more than once if the
  // page is reloaded.)
  //
  // If GetTimestamp() returns a null time, that means that either:
  //
  //   - this navigation hasn't completed yet;
  //   - this navigation was restored and for some reason the
  //     timestamp wasn't available;
  //   - or this navigation was copied from a foreign session.
  virtual void SetTimestamp(base::Time timestamp) = 0;
  virtual base::Time GetTimestamp() const = 0;

  // Used to specify if this entry should be able to access local file://
  // resources.
  virtual void SetCanLoadLocalResources(bool allow) = 0;
  virtual bool GetCanLoadLocalResources() const = 0;

  // Set extra data on this NavigationEntry according to the specified |key|.
  // This data is not persisted by default.
  virtual void SetExtraData(const std::string& key,
                            const base::string16& data) = 0;
  // If present, fills the |data| present at the specified |key|.
  virtual bool GetExtraData(const std::string& key,
                            base::string16* data) const = 0;
  // Removes the data at the specified |key|.
  virtual void ClearExtraData(const std::string& key) = 0;

  // The status code of the last known successful navigation.  If
  // GetHttpStatusCode() returns 0 that means that either:
  //
  //   - this navigation hasn't completed yet;
  //   - a response wasn't received;
  //   - or this navigation was restored and for some reason the
  //     status code wasn't available.
  virtual void SetHttpStatusCode(int http_status_code) = 0;
  virtual int GetHttpStatusCode() const = 0;

  // The redirect chain traversed during this navigation, from the initial
  // redirecting URL to the final non-redirecting current URL.
  virtual void SetRedirectChain(const std::vector<GURL>& redirects) = 0;
  virtual const std::vector<GURL>& GetRedirectChain() const = 0;

  // True if this entry is restored and hasn't been loaded.
  virtual bool IsRestored() const = 0;
};

}  // namespace content

#endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_