blob: 05dbda2beb22a0fe5a5901ab0c4294a86b838874 [file] [log] [blame]
[email protected]91854cd2012-01-10 19:43:571// Copyright (c) 2012 The Chromium Authors. All rights reserved.
license.botbf09a502008-08-24 00:55:552// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
initial.commit09911bf2008-07-26 23:55:294
[email protected]d202a7c2012-01-04 07:53:475#include "content/browser/tab_contents/navigation_controller_impl.h"
initial.commit09911bf2008-07-26 23:55:296
initial.commit09911bf2008-07-26 23:55:297#include "base/file_util.h"
8#include "base/logging.h"
[email protected]b69934e2011-10-29 02:51:529#include "base/string_number_conversions.h" // Temporary
initial.commit09911bf2008-07-26 23:55:2910#include "base/string_util.h"
[email protected]b689fce72009-03-17 22:45:3411#include "base/time.h"
[email protected]252cad62010-08-18 18:33:5712#include "base/utf_string_conversions.h"
[email protected]b8148ac2011-07-13 22:03:2513#include "content/browser/browser_url_handler.h"
[email protected]419a0572011-04-18 22:21:4614#include "content/browser/child_process_security_policy.h"
[email protected]567812d2011-02-24 17:40:5015#include "content/browser/in_process_webkit/session_storage_namespace.h"
[email protected]b69934e2011-10-29 02:51:5216#include "content/browser/renderer_host/render_view_host.h" // Temporary
[email protected]b6583592012-01-25 19:52:3317#include "content/browser/site_instance_impl.h"
[email protected]0dd3a0ab2011-02-18 08:17:4418#include "content/browser/tab_contents/interstitial_page.h"
[email protected]10f417c52011-12-28 21:04:2319#include "content/browser/tab_contents/navigation_entry_impl.h"
[email protected]0dd3a0ab2011-02-18 08:17:4420#include "content/browser/tab_contents/tab_contents.h"
[email protected]0aed2f52011-03-23 18:06:3621#include "content/common/view_messages.h"
[email protected]ccb797302011-12-15 16:55:1122#include "content/public/browser/browser_context.h"
[email protected]d9083482012-01-06 00:38:4623#include "content/public/browser/invalidate_type.h"
[email protected]5b96836f2011-12-22 07:39:0024#include "content/public/browser/navigation_details.h"
[email protected]7f6f44c2011-12-14 13:23:3825#include "content/public/browser/notification_service.h"
[email protected]0d6e9bd2011-10-18 04:29:1626#include "content/public/browser/notification_types.h"
[email protected]7f6f44c2011-12-14 13:23:3827#include "content/public/browser/user_metrics.h"
[email protected]674bc592011-12-20 23:00:4228#include "content/public/browser/web_contents_delegate.h"
[email protected]7f6f44c2011-12-14 13:23:3829#include "content/public/common/content_constants.h"
[email protected]a23de8572009-06-03 02:16:3230#include "net/base/escape.h"
[email protected]31682282010-01-15 18:05:1631#include "net/base/mime_util.h"
[email protected]7f070d42011-03-09 20:25:3232#include "net/base/net_util.h"
[email protected]765b35502008-08-21 00:51:2033#include "webkit/glue/webkit_glue.h"
initial.commit09911bf2008-07-26 23:55:2934
[email protected]cdcb1dee2012-01-04 00:46:2035using content::BrowserContext;
[email protected]e5d549d2011-12-28 01:29:2036using content::GlobalRequestID;
[email protected]c5eed492012-01-04 17:07:5037using content::NavigationController;
[email protected]10f417c52011-12-28 21:04:2338using content::NavigationEntry;
39using content::NavigationEntryImpl;
[email protected]b6583592012-01-25 19:52:3340using content::SiteInstance;
[email protected]7f6f44c2011-12-14 13:23:3841using content::UserMetricsAction;
[email protected]fbc5e5f92012-01-02 06:08:3242using content::WebContents;
[email protected]7f6f44c2011-12-14 13:23:3843
[email protected]e9ba4472008-09-14 15:42:4344namespace {
45
[email protected]93f230e02011-06-01 14:40:0046const int kInvalidateAll = 0xFFFFFFFF;
[email protected]8030f012009-09-25 18:09:3747
[email protected]e9ba4472008-09-14 15:42:4348// Invoked when entries have been pruned, or removed. For example, if the
49// current entries are [google, digg, yahoo], with the current entry google,
50// and the user types in cnet, then digg and yahoo are pruned.
[email protected]d202a7c2012-01-04 07:53:4751void NotifyPrunedEntries(NavigationControllerImpl* nav_controller,
[email protected]c12bf1a12008-09-17 16:28:4952 bool from_front,
53 int count) {
[email protected]8286f51a2011-05-31 17:39:1354 content::PrunedDetails details;
[email protected]c12bf1a12008-09-17 16:28:4955 details.from_front = from_front;
56 details.count = count;
[email protected]ad50def52011-10-19 23:17:0757 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:2758 content::NOTIFICATION_NAV_LIST_PRUNED,
[email protected]c5eed492012-01-04 17:07:5059 content::Source<NavigationController>(nav_controller),
[email protected]6c2381d2011-10-19 02:52:5360 content::Details<content::PrunedDetails>(&details));
[email protected]e9ba4472008-09-14 15:42:4361}
62
63// Ensure the given NavigationEntry has a valid state, so that WebKit does not
64// get confused if we navigate back to it.
[email protected]40bcc302009-03-02 20:50:3965//
[email protected]e9ba4472008-09-14 15:42:4366// An empty state is treated as a new navigation by WebKit, which would mean
67// losing the navigation entries and generating a new navigation entry after
68// this one. We don't want that. To avoid this we create a valid state which
69// WebKit will not treat as a new navigation.
[email protected]10f417c52011-12-28 21:04:2370void SetContentStateIfEmpty(NavigationEntryImpl* entry) {
[email protected]36fc0392011-12-25 03:59:5171 if (entry->GetContentState().empty()) {
72 entry->SetContentState(
73 webkit_glue::CreateHistoryStateForURL(entry->GetURL()));
[email protected]e9ba4472008-09-14 15:42:4374 }
75}
76
77// Configure all the NavigationEntries in entries for restore. This resets
78// the transition type to reload and makes sure the content state isn't empty.
79void ConfigureEntriesForRestore(
[email protected]10f417c52011-12-28 21:04:2380 std::vector<linked_ptr<NavigationEntryImpl> >* entries,
[email protected]5e369672009-11-03 23:48:3081 bool from_last_session) {
[email protected]e9ba4472008-09-14 15:42:4382 for (size_t i = 0; i < entries->size(); ++i) {
83 // Use a transition type of reload so that we don't incorrectly increase
84 // the typed count.
[email protected]022af742011-12-28 18:37:2585 (*entries)[i]->SetTransitionType(content::PAGE_TRANSITION_RELOAD);
[email protected]5e369672009-11-03 23:48:3086 (*entries)[i]->set_restore_type(from_last_session ?
[email protected]10f417c52011-12-28 21:04:2387 NavigationEntryImpl::RESTORE_LAST_SESSION :
88 NavigationEntryImpl::RESTORE_CURRENT_SESSION);
[email protected]e9ba4472008-09-14 15:42:4389 // NOTE(darin): This code is only needed for backwards compat.
90 SetContentStateIfEmpty((*entries)[i].get());
91 }
92}
93
94// See NavigationController::IsURLInPageNavigation for how this works and why.
95bool AreURLsInPageNavigation(const GURL& existing_url, const GURL& new_url) {
[email protected]192d8c5e2010-02-23 07:26:3296 if (existing_url == new_url || !new_url.has_ref()) {
97 // TODO(jcampan): what about when navigating back from a ref URL to the top
98 // non ref URL? Nothing is loaded in that case but we return false here.
99 // The user could also navigate from the ref URL to the non ref URL by
100 // entering the non ref URL in the location bar or through a bookmark, in
101 // which case there would be a load. I am not sure if the non-load/load
102 // scenarios can be differentiated with the TransitionType.
[email protected]e9ba4472008-09-14 15:42:43103 return false;
[email protected]192d8c5e2010-02-23 07:26:32104 }
[email protected]e9ba4472008-09-14 15:42:43105
106 url_canon::Replacements<char> replacements;
107 replacements.ClearRef();
108 return existing_url.ReplaceComponents(replacements) ==
109 new_url.ReplaceComponents(replacements);
110}
111
112} // namespace
113
[email protected]d202a7c2012-01-04 07:53:47114// NavigationControllerImpl ----------------------------------------------------
initial.commit09911bf2008-07-26 23:55:29115
[email protected]9b51970d2011-12-09 23:10:23116const size_t kMaxEntryCountForTestingNotSet = -1;
117
[email protected]765b35502008-08-21 00:51:20118// static
[email protected]d202a7c2012-01-04 07:53:47119size_t NavigationControllerImpl::max_entry_count_for_testing_ =
[email protected]9b51970d2011-12-09 23:10:23120 kMaxEntryCountForTestingNotSet;
[email protected]765b35502008-08-21 00:51:20121
[email protected]cdcb1dee2012-01-04 00:46:20122 // Should Reload check for post data? The default is true, but is set to false
123// when testing.
124static bool g_check_for_repost = true;
initial.commit09911bf2008-07-26 23:55:29125
[email protected]cdcb1dee2012-01-04 00:46:20126namespace content {
[email protected]71fde352011-12-29 03:29:56127// static
[email protected]cdcb1dee2012-01-04 00:46:20128NavigationEntry* NavigationController::CreateNavigationEntry(
[email protected]71fde352011-12-29 03:29:56129 const GURL& url,
[email protected]cdcb1dee2012-01-04 00:46:20130 const Referrer& referrer,
131 PageTransition transition,
[email protected]71fde352011-12-29 03:29:56132 bool is_renderer_initiated,
133 const std::string& extra_headers,
[email protected]cdcb1dee2012-01-04 00:46:20134 BrowserContext* browser_context) {
[email protected]71fde352011-12-29 03:29:56135 // Allow the browser URL handler to rewrite the URL. This will, for example,
136 // remove "view-source:" from the beginning of the URL to get the URL that
137 // will actually be loaded. This real URL won't be shown to the user, just
138 // used internally.
139 GURL loaded_url(url);
140 bool reverse_on_redirect = false;
141 BrowserURLHandler::GetInstance()->RewriteURLIfNecessary(
142 &loaded_url, browser_context, &reverse_on_redirect);
143
144 NavigationEntryImpl* entry = new NavigationEntryImpl(
145 NULL, // The site instance for tabs is sent on navigation
146 // (TabContents::GetSiteInstance).
147 -1,
148 loaded_url,
149 referrer,
150 string16(),
151 transition,
152 is_renderer_initiated);
153 entry->SetVirtualURL(url);
154 entry->set_user_typed_url(url);
155 entry->set_update_virtual_url_with_url(reverse_on_redirect);
156 entry->set_extra_headers(extra_headers);
157 return entry;
158}
159
[email protected]cdcb1dee2012-01-04 00:46:20160// static
161void NavigationController::DisablePromptOnRepost() {
162 g_check_for_repost = false;
163}
164
165} // namespace content
166
[email protected]d202a7c2012-01-04 07:53:47167NavigationControllerImpl::NavigationControllerImpl(
[email protected]6ee12c42010-09-14 09:36:07168 TabContents* contents,
[email protected]cdcb1dee2012-01-04 00:46:20169 BrowserContext* browser_context,
[email protected]6ee12c42010-09-14 09:36:07170 SessionStorageNamespace* session_storage_namespace)
[email protected]3d7474ff2011-07-27 17:47:37171 : browser_context_(browser_context),
[email protected]765b35502008-08-21 00:51:20172 pending_entry_(NULL),
173 last_committed_entry_index_(-1),
174 pending_entry_index_(-1),
[email protected]cbab76d2008-10-13 22:42:47175 transient_entry_index_(-1),
[email protected]9423d9412009-04-14 22:13:55176 tab_contents_(contents),
initial.commit09911bf2008-07-26 23:55:29177 max_restored_page_id_(-1),
[email protected]5d063842009-05-15 04:08:24178 ALLOW_THIS_IN_INITIALIZER_LIST(ssl_manager_(this)),
[email protected]38b8f4e2009-09-24 19:44:57179 needs_reload_(false),
[email protected]6ee12c42010-09-14 09:36:07180 session_storage_namespace_(session_storage_namespace),
[email protected]106a0812010-03-18 00:15:12181 pending_reload_(NO_RELOAD) {
[email protected]3d7474ff2011-07-27 17:47:37182 DCHECK(browser_context_);
[email protected]228d06592011-04-01 20:38:59183 if (!session_storage_namespace_) {
184 session_storage_namespace_ = new SessionStorageNamespace(
[email protected]3d7474ff2011-07-27 17:47:37185 browser_context_->GetWebKitContext());
[email protected]228d06592011-04-01 20:38:59186 }
initial.commit09911bf2008-07-26 23:55:29187}
188
[email protected]d202a7c2012-01-04 07:53:47189NavigationControllerImpl::~NavigationControllerImpl() {
[email protected]cbab76d2008-10-13 22:42:47190 DiscardNonCommittedEntriesInternal();
[email protected]c0993872008-08-21 19:59:44191
[email protected]ad50def52011-10-19 23:17:07192 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:27193 content::NOTIFICATION_TAB_CLOSED,
[email protected]c5eed492012-01-04 17:07:50194 content::Source<NavigationController>(this),
[email protected]ad50def52011-10-19 23:17:07195 content::NotificationService::NoDetails());
initial.commit09911bf2008-07-26 23:55:29196}
197
[email protected]d202a7c2012-01-04 07:53:47198WebContents* NavigationControllerImpl::GetWebContents() const {
[email protected]fbc5e5f92012-01-02 06:08:32199 return tab_contents_;
200}
201
[email protected]d202a7c2012-01-04 07:53:47202BrowserContext* NavigationControllerImpl::GetBrowserContext() const {
[email protected]a26023822011-12-29 00:23:55203 return browser_context_;
204}
205
[email protected]d202a7c2012-01-04 07:53:47206void NavigationControllerImpl::SetBrowserContext(
207 BrowserContext* browser_context) {
[email protected]cdcb1dee2012-01-04 00:46:20208 browser_context_ = browser_context;
209}
210
[email protected]d202a7c2012-01-04 07:53:47211void NavigationControllerImpl::Restore(
[email protected]5e369672009-11-03 23:48:30212 int selected_navigation,
[email protected]03838e22011-06-06 15:27:14213 bool from_last_session,
[email protected]10f417c52011-12-28 21:04:23214 std::vector<NavigationEntry*>* entries) {
[email protected]ce3fa3c2009-04-20 19:55:57215 // Verify that this controller is unused and that the input is valid.
[email protected]a26023822011-12-29 00:23:55216 DCHECK(GetEntryCount() == 0 && !GetPendingEntry());
[email protected]ce3fa3c2009-04-20 19:55:57217 DCHECK(selected_navigation >= 0 &&
[email protected]03838e22011-06-06 15:27:14218 selected_navigation < static_cast<int>(entries->size()));
[email protected]ce3fa3c2009-04-20 19:55:57219
[email protected]ce3fa3c2009-04-20 19:55:57220 needs_reload_ = true;
[email protected]ad23a092011-12-28 07:02:04221 for (size_t i = 0; i < entries->size(); ++i) {
[email protected]10f417c52011-12-28 21:04:23222 NavigationEntryImpl* entry =
223 NavigationEntryImpl::FromNavigationEntry((*entries)[i]);
224 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry));
[email protected]ad23a092011-12-28 07:02:04225 }
[email protected]03838e22011-06-06 15:27:14226 entries->clear();
[email protected]ce3fa3c2009-04-20 19:55:57227
228 // And finish the restore.
[email protected]5e369672009-11-03 23:48:30229 FinishRestore(selected_navigation, from_last_session);
[email protected]ce3fa3c2009-04-20 19:55:57230}
231
[email protected]d202a7c2012-01-04 07:53:47232void NavigationControllerImpl::Reload(bool check_for_repost) {
[email protected]1ccb3568d2010-02-19 10:51:16233 ReloadInternal(check_for_repost, RELOAD);
234}
[email protected]d202a7c2012-01-04 07:53:47235void NavigationControllerImpl::ReloadIgnoringCache(bool check_for_repost) {
[email protected]1ccb3568d2010-02-19 10:51:16236 ReloadInternal(check_for_repost, RELOAD_IGNORING_CACHE);
237}
238
[email protected]d202a7c2012-01-04 07:53:47239void NavigationControllerImpl::ReloadInternal(bool check_for_repost,
240 ReloadType reload_type) {
[email protected]cbab76d2008-10-13 22:42:47241 // Reloading a transient entry does nothing.
242 if (transient_entry_index_ != -1)
243 return;
244
245 DiscardNonCommittedEntriesInternal();
initial.commit09911bf2008-07-26 23:55:29246 int current_index = GetCurrentEntryIndex();
[email protected]106a0812010-03-18 00:15:12247 // If we are no where, then we can't reload. TODO(darin): We should add a
248 // CanReload method.
249 if (current_index == -1) {
250 return;
251 }
252
[email protected]cdcb1dee2012-01-04 00:46:20253 if (g_check_for_repost && check_for_repost &&
[email protected]36fc0392011-12-25 03:59:51254 GetEntryAtIndex(current_index)->GetHasPostData()) {
[email protected]a3a1d142008-12-19 00:42:30255 // The user is asking to reload a page with POST data. Prompt to make sure
[email protected]b5bb35f2009-02-05 20:17:07256 // they really want to do this. If they do, the dialog will call us back
257 // with check_for_repost = false.
[email protected]ad50def52011-10-19 23:17:07258 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:27259 content::NOTIFICATION_REPOST_WARNING_SHOWN,
[email protected]c5eed492012-01-04 17:07:50260 content::Source<NavigationController>(this),
[email protected]ad50def52011-10-19 23:17:07261 content::NotificationService::NoDetails());
[email protected]965bb092010-04-09 11:59:02262
[email protected]106a0812010-03-18 00:15:12263 pending_reload_ = reload_type;
[email protected]9423d9412009-04-14 22:13:55264 tab_contents_->Activate();
[email protected]6934a702011-12-20 00:04:51265 tab_contents_->GetDelegate()->ShowRepostFormWarningDialog(tab_contents_);
initial.commit09911bf2008-07-26 23:55:29266 } else {
[email protected]cbab76d2008-10-13 22:42:47267 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:20268
269 pending_entry_index_ = current_index;
[email protected]022af742011-12-28 18:37:25270 entries_[pending_entry_index_]->SetTransitionType(
[email protected]2905f742011-10-13 03:51:58271 content::PAGE_TRANSITION_RELOAD);
[email protected]1ccb3568d2010-02-19 10:51:16272 NavigateToPendingEntry(reload_type);
initial.commit09911bf2008-07-26 23:55:29273 }
274}
275
[email protected]d202a7c2012-01-04 07:53:47276void NavigationControllerImpl::CancelPendingReload() {
[email protected]106a0812010-03-18 00:15:12277 DCHECK(pending_reload_ != NO_RELOAD);
278 pending_reload_ = NO_RELOAD;
279}
280
[email protected]d202a7c2012-01-04 07:53:47281void NavigationControllerImpl::ContinuePendingReload() {
[email protected]106a0812010-03-18 00:15:12282 if (pending_reload_ == NO_RELOAD) {
283 NOTREACHED();
284 } else {
285 ReloadInternal(false, pending_reload_);
[email protected]965bb092010-04-09 11:59:02286 pending_reload_ = NO_RELOAD;
[email protected]106a0812010-03-18 00:15:12287 }
288}
289
[email protected]d202a7c2012-01-04 07:53:47290bool NavigationControllerImpl::IsInitialNavigation() {
[email protected]c70f9b82010-04-21 07:31:11291 return last_document_loaded_.is_null();
292}
293
[email protected]d202a7c2012-01-04 07:53:47294NavigationEntryImpl* NavigationControllerImpl::GetEntryWithPageID(
[email protected]b6583592012-01-25 19:52:33295 SiteInstance* instance, int32 page_id) const {
[email protected]7f0005a2009-04-15 03:25:11296 int index = GetEntryIndexWithPageID(instance, page_id);
[email protected]765b35502008-08-21 00:51:20297 return (index != -1) ? entries_[index].get() : NULL;
298}
299
[email protected]d202a7c2012-01-04 07:53:47300void NavigationControllerImpl::LoadEntry(NavigationEntryImpl* entry) {
[email protected]419a0572011-04-18 22:21:46301 // Don't navigate to URLs disabled by policy. This prevents showing the URL
302 // on the Omnibar when it is also going to be blocked by
303 // ChildProcessSecurityPolicy::CanRequestURL.
304 ChildProcessSecurityPolicy *policy =
305 ChildProcessSecurityPolicy::GetInstance();
[email protected]36fc0392011-12-25 03:59:51306 if (policy->IsDisabledScheme(entry->GetURL().scheme()) ||
307 policy->IsDisabledScheme(entry->GetVirtualURL().scheme())) {
[email protected]419a0572011-04-18 22:21:46308 VLOG(1) << "URL not loaded because the scheme is blocked by policy: "
[email protected]36fc0392011-12-25 03:59:51309 << entry->GetURL();
[email protected]419a0572011-04-18 22:21:46310 delete entry;
311 return;
312 }
313
[email protected]765b35502008-08-21 00:51:20314 // When navigating to a new page, we don't know for sure if we will actually
315 // end up leaving the current page. The new page load could for example
316 // result in a download or a 'no content' response (e.g., a mailto: URL).
[email protected]cbab76d2008-10-13 22:42:47317 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:20318 pending_entry_ = entry;
[email protected]ad50def52011-10-19 23:17:07319 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:27320 content::NOTIFICATION_NAV_ENTRY_PENDING,
[email protected]c5eed492012-01-04 17:07:50321 content::Source<NavigationController>(this),
[email protected]10f417c52011-12-28 21:04:23322 content::Details<NavigationEntry>(entry));
[email protected]1ccb3568d2010-02-19 10:51:16323 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20324}
325
[email protected]d202a7c2012-01-04 07:53:47326NavigationEntry* NavigationControllerImpl::GetActiveEntry() const {
[email protected]cbab76d2008-10-13 22:42:47327 if (transient_entry_index_ != -1)
328 return entries_[transient_entry_index_].get();
329 if (pending_entry_)
330 return pending_entry_;
331 return GetLastCommittedEntry();
[email protected]765b35502008-08-21 00:51:20332}
333
[email protected]d202a7c2012-01-04 07:53:47334NavigationEntry* NavigationControllerImpl::GetVisibleEntry() const {
[email protected]867e1f92011-08-30 19:01:19335 if (transient_entry_index_ != -1)
336 return entries_[transient_entry_index_].get();
[email protected]e47ae9472011-10-13 19:48:34337 // Only return the pending_entry for new (non-history), browser-initiated
338 // navigations, in order to prevent URL spoof attacks.
339 // Ideally we would also show the pending entry's URL for new renderer-
340 // initiated navigations with no last committed entry (e.g., a link opening
341 // in a new tab), but an attacker can insert content into the about:blank
342 // page while the pending URL loads in that case.
343 if (pending_entry_ &&
[email protected]36fc0392011-12-25 03:59:51344 pending_entry_->GetPageID() == -1 &&
[email protected]e47ae9472011-10-13 19:48:34345 !pending_entry_->is_renderer_initiated())
[email protected]867e1f92011-08-30 19:01:19346 return pending_entry_;
347 return GetLastCommittedEntry();
348}
349
[email protected]d202a7c2012-01-04 07:53:47350int NavigationControllerImpl::GetCurrentEntryIndex() const {
[email protected]cbab76d2008-10-13 22:42:47351 if (transient_entry_index_ != -1)
352 return transient_entry_index_;
[email protected]765b35502008-08-21 00:51:20353 if (pending_entry_index_ != -1)
354 return pending_entry_index_;
355 return last_committed_entry_index_;
356}
357
[email protected]d202a7c2012-01-04 07:53:47358NavigationEntry* NavigationControllerImpl::GetLastCommittedEntry() const {
[email protected]765b35502008-08-21 00:51:20359 if (last_committed_entry_index_ == -1)
360 return NULL;
361 return entries_[last_committed_entry_index_].get();
362}
363
[email protected]d202a7c2012-01-04 07:53:47364bool NavigationControllerImpl::CanViewSource() const {
[email protected]31682282010-01-15 18:05:16365 bool is_supported_mime_type = net::IsSupportedNonImageMimeType(
[email protected]0bfbf882011-12-22 18:19:27366 tab_contents_->GetContentsMimeType().c_str());
[email protected]10f417c52011-12-28 21:04:23367 NavigationEntry* active_entry = GetActiveEntry();
[email protected]31682282010-01-15 18:05:16368 return active_entry && !active_entry->IsViewSourceMode() &&
[email protected]0bfbf882011-12-22 18:19:27369 is_supported_mime_type && !tab_contents_->GetInterstitialPage();
[email protected]31682282010-01-15 18:05:16370}
371
[email protected]d202a7c2012-01-04 07:53:47372int NavigationControllerImpl::GetLastCommittedEntryIndex() const {
[email protected]a26023822011-12-29 00:23:55373 return last_committed_entry_index_;
374}
375
[email protected]d202a7c2012-01-04 07:53:47376int NavigationControllerImpl::GetEntryCount() const {
[email protected]a26023822011-12-29 00:23:55377 return static_cast<int>(entries_.size());
378}
379
[email protected]d202a7c2012-01-04 07:53:47380NavigationEntry* NavigationControllerImpl::GetEntryAtIndex(
[email protected]022af742011-12-28 18:37:25381 int index) const {
382 return entries_.at(index).get();
383}
384
[email protected]d202a7c2012-01-04 07:53:47385NavigationEntry* NavigationControllerImpl::GetEntryAtOffset(
[email protected]022af742011-12-28 18:37:25386 int offset) const {
[email protected]cbab76d2008-10-13 22:42:47387 int index = (transient_entry_index_ != -1) ?
388 transient_entry_index_ + offset :
389 last_committed_entry_index_ + offset;
[email protected]a26023822011-12-29 00:23:55390 if (index < 0 || index >= GetEntryCount())
[email protected]765b35502008-08-21 00:51:20391 return NULL;
392
393 return entries_[index].get();
394}
395
[email protected]d202a7c2012-01-04 07:53:47396bool NavigationControllerImpl::CanGoBack() const {
[email protected]765b35502008-08-21 00:51:20397 return entries_.size() > 1 && GetCurrentEntryIndex() > 0;
398}
399
[email protected]d202a7c2012-01-04 07:53:47400bool NavigationControllerImpl::CanGoForward() const {
[email protected]765b35502008-08-21 00:51:20401 int index = GetCurrentEntryIndex();
402 return index >= 0 && index < (static_cast<int>(entries_.size()) - 1);
403}
404
[email protected]d202a7c2012-01-04 07:53:47405void NavigationControllerImpl::GoBack() {
[email protected]765b35502008-08-21 00:51:20406 if (!CanGoBack()) {
407 NOTREACHED();
408 return;
409 }
410
411 // Base the navigation on where we are now...
412 int current_index = GetCurrentEntryIndex();
413
[email protected]cbab76d2008-10-13 22:42:47414 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20415
416 pending_entry_index_ = current_index - 1;
[email protected]022af742011-12-28 18:37:25417 entries_[pending_entry_index_]->SetTransitionType(
[email protected]2905f742011-10-13 03:51:58418 content::PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51419 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]2905f742011-10-13 03:51:58420 content::PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16421 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20422}
423
[email protected]d202a7c2012-01-04 07:53:47424void NavigationControllerImpl::GoForward() {
[email protected]765b35502008-08-21 00:51:20425 if (!CanGoForward()) {
426 NOTREACHED();
427 return;
428 }
429
[email protected]cbab76d2008-10-13 22:42:47430 bool transient = (transient_entry_index_ != -1);
431
[email protected]765b35502008-08-21 00:51:20432 // Base the navigation on where we are now...
433 int current_index = GetCurrentEntryIndex();
434
[email protected]cbab76d2008-10-13 22:42:47435 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20436
[email protected]cbab76d2008-10-13 22:42:47437 pending_entry_index_ = current_index;
438 // If there was a transient entry, we removed it making the current index
439 // the next page.
440 if (!transient)
441 pending_entry_index_++;
442
[email protected]022af742011-12-28 18:37:25443 entries_[pending_entry_index_]->SetTransitionType(
[email protected]2905f742011-10-13 03:51:58444 content::PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51445 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]2905f742011-10-13 03:51:58446 content::PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16447 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20448}
449
[email protected]d202a7c2012-01-04 07:53:47450void NavigationControllerImpl::GoToIndex(int index) {
[email protected]765b35502008-08-21 00:51:20451 if (index < 0 || index >= static_cast<int>(entries_.size())) {
452 NOTREACHED();
453 return;
454 }
455
[email protected]cbab76d2008-10-13 22:42:47456 if (transient_entry_index_ != -1) {
457 if (index == transient_entry_index_) {
458 // Nothing to do when navigating to the transient.
459 return;
460 }
461 if (index > transient_entry_index_) {
462 // Removing the transient is goint to shift all entries by 1.
463 index--;
464 }
465 }
466
467 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20468
469 pending_entry_index_ = index;
[email protected]022af742011-12-28 18:37:25470 entries_[pending_entry_index_]->SetTransitionType(
[email protected]2905f742011-10-13 03:51:58471 content::PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51472 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]2905f742011-10-13 03:51:58473 content::PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16474 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20475}
476
[email protected]d202a7c2012-01-04 07:53:47477void NavigationControllerImpl::GoToOffset(int offset) {
[email protected]cbab76d2008-10-13 22:42:47478 int index = (transient_entry_index_ != -1) ?
479 transient_entry_index_ + offset :
480 last_committed_entry_index_ + offset;
[email protected]a26023822011-12-29 00:23:55481 if (index < 0 || index >= GetEntryCount())
[email protected]765b35502008-08-21 00:51:20482 return;
483
484 GoToIndex(index);
485}
486
[email protected]d202a7c2012-01-04 07:53:47487void NavigationControllerImpl::RemoveEntryAtIndex(int index) {
[email protected]6a13a6c2011-12-20 21:47:12488 if (index == last_committed_entry_index_)
489 return;
490
[email protected]43032342011-03-21 14:10:31491 RemoveEntryAtIndexInternal(index);
[email protected]cbab76d2008-10-13 22:42:47492}
493
[email protected]d202a7c2012-01-04 07:53:47494void NavigationControllerImpl::UpdateVirtualURLToURL(
[email protected]10f417c52011-12-28 21:04:23495 NavigationEntryImpl* entry, const GURL& new_url) {
[email protected]38178a42009-12-17 18:58:32496 GURL new_virtual_url(new_url);
[email protected]f1eb87a2011-05-06 17:49:41497 if (BrowserURLHandler::GetInstance()->ReverseURLRewrite(
[email protected]36fc0392011-12-25 03:59:51498 &new_virtual_url, entry->GetVirtualURL(), browser_context_)) {
499 entry->SetVirtualURL(new_virtual_url);
[email protected]38178a42009-12-17 18:58:32500 }
501}
502
[email protected]d202a7c2012-01-04 07:53:47503void NavigationControllerImpl::AddTransientEntry(NavigationEntryImpl* entry) {
[email protected]cbab76d2008-10-13 22:42:47504 // Discard any current transient entry, we can only have one at a time.
505 int index = 0;
506 if (last_committed_entry_index_ != -1)
507 index = last_committed_entry_index_ + 1;
508 DiscardTransientEntry();
[email protected]10f417c52011-12-28 21:04:23509 entries_.insert(
510 entries_.begin() + index, linked_ptr<NavigationEntryImpl>(entry));
[email protected]e1cd5452010-08-26 18:03:25511 transient_entry_index_ = index;
[email protected]93f230e02011-06-01 14:40:00512 tab_contents_->NotifyNavigationStateChanged(kInvalidateAll);
[email protected]cbab76d2008-10-13 22:42:47513}
514
[email protected]d202a7c2012-01-04 07:53:47515void NavigationControllerImpl::TransferURL(
[email protected]4ad5d77d2011-12-03 02:00:48516 const GURL& url,
[email protected]95dacd02011-12-05 10:35:26517 const content::Referrer& referrer,
[email protected]4ad5d77d2011-12-03 02:00:48518 content::PageTransition transition,
519 const std::string& extra_headers,
520 const GlobalRequestID& transferred_global_request_id,
521 bool is_renderer_initiated) {
522 // The user initiated a load, we don't need to reload anymore.
523 needs_reload_ = false;
524
[email protected]71fde352011-12-29 03:29:56525 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
526 CreateNavigationEntry(
527 url, referrer, transition, is_renderer_initiated, extra_headers,
528 browser_context_));
[email protected]4ad5d77d2011-12-03 02:00:48529 entry->set_transferred_global_request_id(transferred_global_request_id);
530
531 LoadEntry(entry);
532}
533
[email protected]d202a7c2012-01-04 07:53:47534void NavigationControllerImpl::LoadURL(
[email protected]6c6b02d2011-09-02 03:36:47535 const GURL& url,
[email protected]95dacd02011-12-05 10:35:26536 const content::Referrer& referrer,
[email protected]2905f742011-10-13 03:51:58537 content::PageTransition transition,
[email protected]6c6b02d2011-09-02 03:36:47538 const std::string& extra_headers) {
initial.commit09911bf2008-07-26 23:55:29539 // The user initiated a load, we don't need to reload anymore.
540 needs_reload_ = false;
541
[email protected]71fde352011-12-29 03:29:56542 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
543 CreateNavigationEntry(
544 url, referrer, transition, false, extra_headers, browser_context_));
[email protected]e47ae9472011-10-13 19:48:34545
546 LoadEntry(entry);
547}
548
[email protected]d202a7c2012-01-04 07:53:47549void NavigationControllerImpl::LoadURLFromRenderer(
[email protected]e47ae9472011-10-13 19:48:34550 const GURL& url,
[email protected]95dacd02011-12-05 10:35:26551 const content::Referrer& referrer,
[email protected]e47ae9472011-10-13 19:48:34552 content::PageTransition transition,
553 const std::string& extra_headers) {
554 // The user initiated a load, we don't need to reload anymore.
555 needs_reload_ = false;
556
[email protected]71fde352011-12-29 03:29:56557 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
558 CreateNavigationEntry(
559 url, referrer, transition, true, extra_headers, browser_context_));
initial.commit09911bf2008-07-26 23:55:29560
561 LoadEntry(entry);
562}
563
[email protected]d202a7c2012-01-04 07:53:47564void NavigationControllerImpl::DocumentLoadedInFrame() {
[email protected]09b8f82f2009-06-16 20:22:11565 last_document_loaded_ = base::TimeTicks::Now();
566}
567
[email protected]d202a7c2012-01-04 07:53:47568bool NavigationControllerImpl::RendererDidNavigate(
[email protected]e9ba4472008-09-14 15:42:43569 const ViewHostMsg_FrameNavigate_Params& params,
[email protected]8286f51a2011-05-31 17:39:13570 content::LoadCommittedDetails* details) {
[email protected]4bf3522c2010-08-19 21:00:20571
[email protected]0e8db942008-09-24 21:21:48572 // Save the previous state before we clobber it.
573 if (GetLastCommittedEntry()) {
[email protected]36fc0392011-12-25 03:59:51574 details->previous_url = GetLastCommittedEntry()->GetURL();
[email protected]a26023822011-12-29 00:23:55575 details->previous_entry_index = GetLastCommittedEntryIndex();
[email protected]0e8db942008-09-24 21:21:48576 } else {
577 details->previous_url = GURL();
578 details->previous_entry_index = -1;
579 }
[email protected]ecd9d8702008-08-28 22:10:17580
[email protected]77362eb2011-08-01 17:18:38581 // If we have a pending entry at this point, it should have a SiteInstance.
582 // Restored entries start out with a null SiteInstance, but we should have
583 // assigned one in NavigateToPendingEntry.
584 DCHECK(pending_entry_index_ == -1 || pending_entry_->site_instance());
[email protected]e9ba4472008-09-14 15:42:43585
[email protected]192d8c5e2010-02-23 07:26:32586 // is_in_page must be computed before the entry gets committed.
587 details->is_in_page = IsURLInPageNavigation(params.url);
588
[email protected]e9ba4472008-09-14 15:42:43589 // Do navigation-type specific actions. These will make and commit an entry.
[email protected]0e8db942008-09-24 21:21:48590 details->type = ClassifyNavigation(params);
[email protected]4bf3522c2010-08-19 21:00:20591
[email protected]0e8db942008-09-24 21:21:48592 switch (details->type) {
[email protected]610cbb82011-10-18 16:35:08593 case content::NAVIGATION_TYPE_NEW_PAGE:
[email protected]befd8d822009-07-01 04:51:47594 RendererDidNavigateToNewPage(params, &(details->did_replace_entry));
[email protected]e9ba4472008-09-14 15:42:43595 break;
[email protected]610cbb82011-10-18 16:35:08596 case content::NAVIGATION_TYPE_EXISTING_PAGE:
[email protected]e9ba4472008-09-14 15:42:43597 RendererDidNavigateToExistingPage(params);
598 break;
[email protected]610cbb82011-10-18 16:35:08599 case content::NAVIGATION_TYPE_SAME_PAGE:
[email protected]e9ba4472008-09-14 15:42:43600 RendererDidNavigateToSamePage(params);
601 break;
[email protected]610cbb82011-10-18 16:35:08602 case content::NAVIGATION_TYPE_IN_PAGE:
[email protected]befd8d822009-07-01 04:51:47603 RendererDidNavigateInPage(params, &(details->did_replace_entry));
[email protected]e9ba4472008-09-14 15:42:43604 break;
[email protected]610cbb82011-10-18 16:35:08605 case content::NAVIGATION_TYPE_NEW_SUBFRAME:
[email protected]e9ba4472008-09-14 15:42:43606 RendererDidNavigateNewSubframe(params);
607 break;
[email protected]610cbb82011-10-18 16:35:08608 case content::NAVIGATION_TYPE_AUTO_SUBFRAME:
[email protected]e9ba4472008-09-14 15:42:43609 if (!RendererDidNavigateAutoSubframe(params))
610 return false;
611 break;
[email protected]610cbb82011-10-18 16:35:08612 case content::NAVIGATION_TYPE_NAV_IGNORE:
[email protected]20d1c992011-04-12 21:17:49613 // If a pending navigation was in progress, this canceled it. We should
614 // discard it and make sure it is removed from the URL bar. After that,
615 // there is nothing we can do with this navigation, so we just return to
[email protected]e9ba4472008-09-14 15:42:43616 // the caller that nothing has happened.
[email protected]20d1c992011-04-12 21:17:49617 if (pending_entry_) {
618 DiscardNonCommittedEntries();
[email protected]93f230e02011-06-01 14:40:00619 tab_contents_->NotifyNavigationStateChanged(
[email protected]d9083482012-01-06 00:38:46620 content::INVALIDATE_TYPE_URL);
[email protected]20d1c992011-04-12 21:17:49621 }
[email protected]e9ba4472008-09-14 15:42:43622 return false;
623 default:
624 NOTREACHED();
[email protected]765b35502008-08-21 00:51:20625 }
626
[email protected]e9ba4472008-09-14 15:42:43627 // All committed entries should have nonempty content state so WebKit doesn't
628 // get confused when we go back to them (see the function for details).
[email protected]0f38dc4552011-02-25 11:24:00629 DCHECK(!params.content_state.empty());
[email protected]10f417c52011-12-28 21:04:23630 NavigationEntryImpl* active_entry =
631 NavigationEntryImpl::FromNavigationEntry(GetActiveEntry());
[email protected]36fc0392011-12-25 03:59:51632 active_entry->SetContentState(params.content_state);
[email protected]765b35502008-08-21 00:51:20633
[email protected]e47ae9472011-10-13 19:48:34634 // Once committed, we do not need to track if the entry was initiated by
635 // the renderer.
636 active_entry->set_is_renderer_initiated(false);
637
[email protected]49bd30e62011-03-22 20:12:59638 // The active entry's SiteInstance should match our SiteInstance.
639 DCHECK(active_entry->site_instance() == tab_contents_->GetSiteInstance());
640
[email protected]e9ba4472008-09-14 15:42:43641 // Now prep the rest of the details for the notification and broadcast.
[email protected]0f38dc4552011-02-25 11:24:00642 details->entry = active_entry;
[email protected]2905f742011-10-13 03:51:58643 details->is_main_frame =
644 content::PageTransitionIsMainFrame(params.transition);
[email protected]f072d2ce2008-09-17 17:16:24645 details->serialized_security_info = params.security_info;
[email protected]2e39d2e2009-02-19 18:41:31646 details->http_status_code = params.http_status_code;
[email protected]93f230e02011-06-01 14:40:00647 NotifyNavigationEntryCommitted(details);
initial.commit09911bf2008-07-26 23:55:29648
[email protected]e9ba4472008-09-14 15:42:43649 return true;
initial.commit09911bf2008-07-26 23:55:29650}
651
[email protected]d202a7c2012-01-04 07:53:47652content::NavigationType NavigationControllerImpl::ClassifyNavigation(
[email protected]e9ba4472008-09-14 15:42:43653 const ViewHostMsg_FrameNavigate_Params& params) const {
[email protected]e9ba4472008-09-14 15:42:43654 if (params.page_id == -1) {
[email protected]eef9de32009-09-23 17:19:46655 // The renderer generates the page IDs, and so if it gives us the invalid
656 // page ID (-1) we know it didn't actually navigate. This happens in a few
657 // cases:
658 //
659 // - If a page makes a popup navigated to about blank, and then writes
660 // stuff like a subframe navigated to a real page. We'll get the commit
661 // for the subframe, but there won't be any commit for the outer page.
662 //
663 // - We were also getting these for failed loads (for example, bug 21849).
664 // The guess is that we get a "load commit" for the alternate error page,
665 // but that doesn't affect the page ID, so we get the "old" one, which
666 // could be invalid. This can also happen for a cross-site transition
667 // that causes us to swap processes. Then the error page load will be in
668 // a new process with no page IDs ever assigned (and hence a -1 value),
669 // yet the navigation controller still might have previous pages in its
670 // list.
671 //
672 // In these cases, there's nothing we can do with them, so ignore.
[email protected]610cbb82011-10-18 16:35:08673 return content::NAVIGATION_TYPE_NAV_IGNORE;
[email protected]e9ba4472008-09-14 15:42:43674 }
675
[email protected]9423d9412009-04-14 22:13:55676 if (params.page_id > tab_contents_->GetMaxPageID()) {
[email protected]e9ba4472008-09-14 15:42:43677 // Greater page IDs than we've ever seen before are new pages. We may or may
678 // not have a pending entry for the page, and this may or may not be the
679 // main frame.
[email protected]2905f742011-10-13 03:51:58680 if (content::PageTransitionIsMainFrame(params.transition))
[email protected]610cbb82011-10-18 16:35:08681 return content::NAVIGATION_TYPE_NEW_PAGE;
[email protected]4c27ba82008-09-24 16:49:09682
683 // When this is a new subframe navigation, we should have a committed page
684 // for which it's a suframe in. This may not be the case when an iframe is
685 // navigated on a popup navigated to about:blank (the iframe would be
686 // written into the popup by script on the main page). For these cases,
687 // there isn't any navigation stuff we can do, so just ignore it.
688 if (!GetLastCommittedEntry())
[email protected]610cbb82011-10-18 16:35:08689 return content::NAVIGATION_TYPE_NAV_IGNORE;
[email protected]4c27ba82008-09-24 16:49:09690
691 // Valid subframe navigation.
[email protected]610cbb82011-10-18 16:35:08692 return content::NAVIGATION_TYPE_NEW_SUBFRAME;
[email protected]e9ba4472008-09-14 15:42:43693 }
694
695 // Now we know that the notification is for an existing page. Find that entry.
696 int existing_entry_index = GetEntryIndexWithPageID(
[email protected]9423d9412009-04-14 22:13:55697 tab_contents_->GetSiteInstance(),
[email protected]e9ba4472008-09-14 15:42:43698 params.page_id);
699 if (existing_entry_index == -1) {
700 // The page was not found. It could have been pruned because of the limit on
701 // back/forward entries (not likely since we'll usually tell it to navigate
702 // to such entries). It could also mean that the renderer is smoking crack.
703 NOTREACHED();
[email protected]485e8232011-07-24 18:03:46704
705 // Because the unknown entry has committed, we risk showing the wrong URL in
706 // release builds. Instead, we'll kill the renderer process to be safe.
707 LOG(ERROR) << "terminating renderer for bad navigation: " << params.url;
[email protected]7f6f44c2011-12-14 13:23:38708 content::RecordAction(UserMetricsAction("BadMessageTerminate_NC"));
[email protected]b69934e2011-10-29 02:51:52709
[email protected]7ec6f382011-11-11 01:28:17710 // Temporary code so we can get more information. Format:
[email protected]8c380582011-12-02 03:16:10711 // http://url/foo.html#page1#max3#frame1#ids:2_Nx,1_1x,3_2
712 std::string temp = params.url.spec();
[email protected]7ec6f382011-11-11 01:28:17713 temp.append("#page");
[email protected]b69934e2011-10-29 02:51:52714 temp.append(base::IntToString(params.page_id));
[email protected]7ec6f382011-11-11 01:28:17715 temp.append("#max");
716 temp.append(base::IntToString(tab_contents_->GetMaxPageID()));
717 temp.append("#frame");
718 temp.append(base::IntToString(params.frame_id));
719 temp.append("#ids");
720 for (int i = 0; i < static_cast<int>(entries_.size()); ++i) {
[email protected]8c380582011-12-02 03:16:10721 // Append entry metadata (e.g., 3_7x):
722 // 3: page_id
723 // 7: SiteInstance ID, or N for null
724 // x: appended if not from the current SiteInstance
[email protected]36fc0392011-12-25 03:59:51725 temp.append(base::IntToString(entries_[i]->GetPageID()));
[email protected]8c380582011-12-02 03:16:10726 temp.append("_");
727 if (entries_[i]->site_instance())
[email protected]b6583592012-01-25 19:52:33728 temp.append(base::IntToString(entries_[i]->site_instance()->GetId()));
[email protected]7ec6f382011-11-11 01:28:17729 else
[email protected]8c380582011-12-02 03:16:10730 temp.append("N");
731 if (entries_[i]->site_instance() != tab_contents_->GetSiteInstance())
[email protected]7ec6f382011-11-11 01:28:17732 temp.append("x");
733 temp.append(",");
[email protected]b69934e2011-10-29 02:51:52734 }
735 GURL url(temp);
[email protected]151a63d2011-12-20 22:32:52736 tab_contents_->GetRenderViewHost()->Send(new ViewMsg_TempCrashWithData(url));
[email protected]b69934e2011-10-29 02:51:52737 return content::NAVIGATION_TYPE_NAV_IGNORE;
[email protected]e9ba4472008-09-14 15:42:43738 }
[email protected]10f417c52011-12-28 21:04:23739 NavigationEntryImpl* existing_entry = entries_[existing_entry_index].get();
[email protected]e9ba4472008-09-14 15:42:43740
[email protected]2905f742011-10-13 03:51:58741 if (!content::PageTransitionIsMainFrame(params.transition)) {
[email protected]e6035c22010-05-25 16:15:52742 // All manual subframes would get new IDs and were handled above, so we
743 // know this is auto. Since the current page was found in the navigation
744 // entry list, we're guaranteed to have a last committed entry.
745 DCHECK(GetLastCommittedEntry());
[email protected]610cbb82011-10-18 16:35:08746 return content::NAVIGATION_TYPE_AUTO_SUBFRAME;
[email protected]e6035c22010-05-25 16:15:52747 }
748
749 // Anything below here we know is a main frame navigation.
[email protected]e9ba4472008-09-14 15:42:43750 if (pending_entry_ &&
[email protected]e9ba4472008-09-14 15:42:43751 existing_entry != pending_entry_ &&
[email protected]36fc0392011-12-25 03:59:51752 pending_entry_->GetPageID() == -1 &&
[email protected]230c0012011-04-08 16:27:24753 existing_entry == GetLastCommittedEntry()) {
[email protected]e9ba4472008-09-14 15:42:43754 // In this case, we have a pending entry for a URL but WebCore didn't do a
755 // new navigation. This happens when you press enter in the URL bar to
756 // reload. We will create a pending entry, but WebKit will convert it to
757 // a reload since it's the same page and not create a new entry for it
758 // (the user doesn't want to have a new back/forward entry when they do
[email protected]230c0012011-04-08 16:27:24759 // this). If this matches the last committed entry, we want to just ignore
760 // the pending entry and go back to where we were (the "existing entry").
[email protected]610cbb82011-10-18 16:35:08761 return content::NAVIGATION_TYPE_SAME_PAGE;
[email protected]e9ba4472008-09-14 15:42:43762 }
763
[email protected]fc60f222008-12-18 17:36:54764 // Any toplevel navigations with the same base (minus the reference fragment)
765 // are in-page navigations. We weeded out subframe navigations above. Most of
766 // the time this doesn't matter since WebKit doesn't tell us about subframe
767 // navigations that don't actually navigate, but it can happen when there is
768 // an encoding override (it always sends a navigation request).
[email protected]36fc0392011-12-25 03:59:51769 if (AreURLsInPageNavigation(existing_entry->GetURL(), params.url))
[email protected]610cbb82011-10-18 16:35:08770 return content::NAVIGATION_TYPE_IN_PAGE;
[email protected]fc60f222008-12-18 17:36:54771
[email protected]e9ba4472008-09-14 15:42:43772 // Since we weeded out "new" navigations above, we know this is an existing
[email protected]4c27ba82008-09-24 16:49:09773 // (back/forward) navigation.
[email protected]610cbb82011-10-18 16:35:08774 return content::NAVIGATION_TYPE_EXISTING_PAGE;
[email protected]e9ba4472008-09-14 15:42:43775}
776
[email protected]d202a7c2012-01-04 07:53:47777bool NavigationControllerImpl::IsRedirect(
[email protected]09b8f82f2009-06-16 20:22:11778 const ViewHostMsg_FrameNavigate_Params& params) {
779 // For main frame transition, we judge by params.transition.
780 // Otherwise, by params.redirects.
[email protected]2905f742011-10-13 03:51:58781 if (content::PageTransitionIsMainFrame(params.transition)) {
782 return content::PageTransitionIsRedirect(params.transition);
[email protected]09b8f82f2009-06-16 20:22:11783 }
784 return params.redirects.size() > 1;
785}
786
[email protected]d202a7c2012-01-04 07:53:47787void NavigationControllerImpl::RendererDidNavigateToNewPage(
[email protected]befd8d822009-07-01 04:51:47788 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) {
[email protected]10f417c52011-12-28 21:04:23789 NavigationEntryImpl* new_entry;
[email protected]f1eb87a2011-05-06 17:49:41790 bool update_virtual_url;
[email protected]e9ba4472008-09-14 15:42:43791 if (pending_entry_) {
792 // TODO(brettw) this assumes that the pending entry is appropriate for the
793 // new page that was just loaded. I don't think this is necessarily the
[email protected]49bd30e62011-03-22 20:12:59794 // case! We should have some more tracking to know for sure.
[email protected]10f417c52011-12-28 21:04:23795 new_entry = new NavigationEntryImpl(*pending_entry_);
[email protected]e9ba4472008-09-14 15:42:43796
797 // Don't use the page type from the pending entry. Some interstitial page
798 // may have set the type to interstitial. Once we commit, however, the page
799 // type must always be normal.
[email protected]66fdbd52011-10-18 17:08:53800 new_entry->set_page_type(content::PAGE_TYPE_NORMAL);
[email protected]f1eb87a2011-05-06 17:49:41801 update_virtual_url = new_entry->update_virtual_url_with_url();
[email protected]e9ba4472008-09-14 15:42:43802 } else {
[email protected]10f417c52011-12-28 21:04:23803 new_entry = new NavigationEntryImpl;
[email protected]f1eb87a2011-05-06 17:49:41804 // When navigating to a new page, give the browser URL handler a chance to
805 // update the virtual URL based on the new URL. For example, this is needed
806 // to show chrome://bookmarks/#1 when the bookmarks webui extension changes
807 // the URL.
808 update_virtual_url = true;
[email protected]e9ba4472008-09-14 15:42:43809 }
810
[email protected]ad23a092011-12-28 07:02:04811 new_entry->SetURL(params.url);
[email protected]f1eb87a2011-05-06 17:49:41812 if (update_virtual_url)
[email protected]38178a42009-12-17 18:58:32813 UpdateVirtualURLToURL(new_entry, params.url);
[email protected]022af742011-12-28 18:37:25814 new_entry->SetReferrer(params.referrer);
[email protected]36fc0392011-12-25 03:59:51815 new_entry->SetPageID(params.page_id);
[email protected]022af742011-12-28 18:37:25816 new_entry->SetTransitionType(params.transition);
[email protected]b6583592012-01-25 19:52:33817 new_entry->set_site_instance(
818 static_cast<SiteInstanceImpl*>(tab_contents_->GetSiteInstance()));
[email protected]36fc0392011-12-25 03:59:51819 new_entry->SetHasPostData(params.is_post);
[email protected]e9ba4472008-09-14 15:42:43820
[email protected]befd8d822009-07-01 04:51:47821 InsertOrReplaceEntry(new_entry, *did_replace_entry);
[email protected]e9ba4472008-09-14 15:42:43822}
823
[email protected]d202a7c2012-01-04 07:53:47824void NavigationControllerImpl::RendererDidNavigateToExistingPage(
[email protected]e9ba4472008-09-14 15:42:43825 const ViewHostMsg_FrameNavigate_Params& params) {
826 // We should only get here for main frame navigations.
[email protected]2905f742011-10-13 03:51:58827 DCHECK(content::PageTransitionIsMainFrame(params.transition));
[email protected]e9ba4472008-09-14 15:42:43828
829 // This is a back/forward navigation. The existing page for the ID is
[email protected]4c27ba82008-09-24 16:49:09830 // guaranteed to exist by ClassifyNavigation, and we just need to update it
831 // with new information from the renderer.
[email protected]7f0005a2009-04-15 03:25:11832 int entry_index = GetEntryIndexWithPageID(tab_contents_->GetSiteInstance(),
833 params.page_id);
[email protected]e9ba4472008-09-14 15:42:43834 DCHECK(entry_index >= 0 &&
835 entry_index < static_cast<int>(entries_.size()));
[email protected]10f417c52011-12-28 21:04:23836 NavigationEntryImpl* entry = entries_[entry_index].get();
[email protected]e9ba4472008-09-14 15:42:43837
838 // The URL may have changed due to redirects. The site instance will normally
839 // be the same except during session restore, when no site instance will be
840 // assigned.
[email protected]ad23a092011-12-28 07:02:04841 entry->SetURL(params.url);
[email protected]38178a42009-12-17 18:58:32842 if (entry->update_virtual_url_with_url())
843 UpdateVirtualURLToURL(entry, params.url);
[email protected]e9ba4472008-09-14 15:42:43844 DCHECK(entry->site_instance() == NULL ||
[email protected]9423d9412009-04-14 22:13:55845 entry->site_instance() == tab_contents_->GetSiteInstance());
[email protected]b6583592012-01-25 19:52:33846 entry->set_site_instance(
847 static_cast<SiteInstanceImpl*>(tab_contents_->GetSiteInstance()));
[email protected]e9ba4472008-09-14 15:42:43848
[email protected]36fc0392011-12-25 03:59:51849 entry->SetHasPostData(params.is_post);
[email protected]d5a49e52010-01-08 03:01:41850
[email protected]e9ba4472008-09-14 15:42:43851 // The entry we found in the list might be pending if the user hit
852 // back/forward/reload. This load should commit it (since it's already in the
[email protected]49bd30e62011-03-22 20:12:59853 // list, we can just discard the pending pointer). We should also discard the
854 // pending entry if it corresponds to a different navigation, since that one
855 // is now likely canceled. If it is not canceled, we will treat it as a new
856 // navigation when it arrives, which is also ok.
[email protected]e9ba4472008-09-14 15:42:43857 //
858 // Note that we need to use the "internal" version since we don't want to
859 // actually change any other state, just kill the pointer.
[email protected]49bd30e62011-03-22 20:12:59860 if (pending_entry_)
[email protected]cbab76d2008-10-13 22:42:47861 DiscardNonCommittedEntriesInternal();
[email protected]40bcc302009-03-02 20:50:39862
[email protected]80858db52009-10-15 00:35:18863 // If a transient entry was removed, the indices might have changed, so we
864 // have to query the entry index again.
865 last_committed_entry_index_ =
866 GetEntryIndexWithPageID(tab_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:43867}
868
[email protected]d202a7c2012-01-04 07:53:47869void NavigationControllerImpl::RendererDidNavigateToSamePage(
[email protected]e9ba4472008-09-14 15:42:43870 const ViewHostMsg_FrameNavigate_Params& params) {
871 // This mode implies we have a pending entry that's the same as an existing
[email protected]4c27ba82008-09-24 16:49:09872 // entry for this page ID. This entry is guaranteed to exist by
873 // ClassifyNavigation. All we need to do is update the existing entry.
[email protected]10f417c52011-12-28 21:04:23874 NavigationEntryImpl* existing_entry = GetEntryWithPageID(
875 tab_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:43876
877 // We assign the entry's unique ID to be that of the new one. Since this is
878 // always the result of a user action, we want to dismiss infobars, etc. like
879 // a regular user-initiated navigation.
[email protected]36fc0392011-12-25 03:59:51880 existing_entry->set_unique_id(pending_entry_->GetUniqueID());
[email protected]e9ba4472008-09-14 15:42:43881
[email protected]a0e69262009-06-03 19:08:48882 // The URL may have changed due to redirects.
[email protected]38178a42009-12-17 18:58:32883 if (existing_entry->update_virtual_url_with_url())
884 UpdateVirtualURLToURL(existing_entry, params.url);
[email protected]ad23a092011-12-28 07:02:04885 existing_entry->SetURL(params.url);
[email protected]a0e69262009-06-03 19:08:48886
[email protected]cbab76d2008-10-13 22:42:47887 DiscardNonCommittedEntries();
[email protected]e9ba4472008-09-14 15:42:43888}
889
[email protected]d202a7c2012-01-04 07:53:47890void NavigationControllerImpl::RendererDidNavigateInPage(
[email protected]befd8d822009-07-01 04:51:47891 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) {
[email protected]2905f742011-10-13 03:51:58892 DCHECK(content::PageTransitionIsMainFrame(params.transition)) <<
[email protected]e9ba4472008-09-14 15:42:43893 "WebKit should only tell us about in-page navs for the main frame.";
894 // We're guaranteed to have an entry for this one.
[email protected]10f417c52011-12-28 21:04:23895 NavigationEntryImpl* existing_entry = GetEntryWithPageID(
896 tab_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:43897
898 // Reference fragment navigation. We're guaranteed to have the last_committed
899 // entry and it will be the same page as the new navigation (minus the
[email protected]d466b8a2011-07-15 21:48:03900 // reference fragments, of course). We'll update the URL of the existing
901 // entry without pruning the forward history.
[email protected]ad23a092011-12-28 07:02:04902 existing_entry->SetURL(params.url);
[email protected]d466b8a2011-07-15 21:48:03903 if (existing_entry->update_virtual_url_with_url())
904 UpdateVirtualURLToURL(existing_entry, params.url);
[email protected]ccbe04e2010-03-17 17:58:43905
906 // This replaces the existing entry since the page ID didn't change.
907 *did_replace_entry = true;
[email protected]d466b8a2011-07-15 21:48:03908
909 if (pending_entry_)
910 DiscardNonCommittedEntriesInternal();
911
912 // If a transient entry was removed, the indices might have changed, so we
913 // have to query the entry index again.
914 last_committed_entry_index_ =
915 GetEntryIndexWithPageID(tab_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:43916}
917
[email protected]d202a7c2012-01-04 07:53:47918void NavigationControllerImpl::RendererDidNavigateNewSubframe(
[email protected]e9ba4472008-09-14 15:42:43919 const ViewHostMsg_FrameNavigate_Params& params) {
[email protected]2905f742011-10-13 03:51:58920 if (content::PageTransitionStripQualifier(params.transition) ==
921 content::PAGE_TRANSITION_AUTO_SUBFRAME) {
[email protected]09b8f82f2009-06-16 20:22:11922 // This is not user-initiated. Ignore.
923 return;
924 }
[email protected]09b8f82f2009-06-16 20:22:11925
[email protected]e9ba4472008-09-14 15:42:43926 // Manual subframe navigations just get the current entry cloned so the user
927 // can go back or forward to it. The actual subframe information will be
928 // stored in the page state for each of those entries. This happens out of
929 // band with the actual navigations.
[email protected]4c27ba82008-09-24 16:49:09930 DCHECK(GetLastCommittedEntry()) << "ClassifyNavigation should guarantee "
931 << "that a last committed entry exists.";
[email protected]10f417c52011-12-28 21:04:23932 NavigationEntryImpl* new_entry = new NavigationEntryImpl(
933 *NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry()));
[email protected]36fc0392011-12-25 03:59:51934 new_entry->SetPageID(params.page_id);
[email protected]672eba292009-05-13 13:22:45935 InsertOrReplaceEntry(new_entry, false);
[email protected]e9ba4472008-09-14 15:42:43936}
937
[email protected]d202a7c2012-01-04 07:53:47938bool NavigationControllerImpl::RendererDidNavigateAutoSubframe(
[email protected]e9ba4472008-09-14 15:42:43939 const ViewHostMsg_FrameNavigate_Params& params) {
940 // We're guaranteed to have a previously committed entry, and we now need to
941 // handle navigation inside of a subframe in it without creating a new entry.
942 DCHECK(GetLastCommittedEntry());
943
944 // Handle the case where we're navigating back/forward to a previous subframe
945 // navigation entry. This is case "2." in NAV_AUTO_SUBFRAME comment in the
946 // header file. In case "1." this will be a NOP.
947 int entry_index = GetEntryIndexWithPageID(
[email protected]9423d9412009-04-14 22:13:55948 tab_contents_->GetSiteInstance(),
[email protected]e9ba4472008-09-14 15:42:43949 params.page_id);
950 if (entry_index < 0 ||
951 entry_index >= static_cast<int>(entries_.size())) {
952 NOTREACHED();
953 return false;
954 }
955
956 // Update the current navigation entry in case we're going back/forward.
957 if (entry_index != last_committed_entry_index_) {
[email protected]e9ba4472008-09-14 15:42:43958 last_committed_entry_index_ = entry_index;
[email protected]e9ba4472008-09-14 15:42:43959 return true;
960 }
961 return false;
962}
963
[email protected]d202a7c2012-01-04 07:53:47964int NavigationControllerImpl::GetIndexOfEntry(
[email protected]10f417c52011-12-28 21:04:23965 const NavigationEntryImpl* entry) const {
[email protected]765b35502008-08-21 00:51:20966 const NavigationEntries::const_iterator i(std::find(
967 entries_.begin(),
968 entries_.end(),
969 entry));
970 return (i == entries_.end()) ? -1 : static_cast<int>(i - entries_.begin());
971}
972
[email protected]d202a7c2012-01-04 07:53:47973bool NavigationControllerImpl::IsURLInPageNavigation(const GURL& url) const {
[email protected]10f417c52011-12-28 21:04:23974 NavigationEntry* last_committed = GetLastCommittedEntry();
[email protected]e9ba4472008-09-14 15:42:43975 if (!last_committed)
976 return false;
[email protected]36fc0392011-12-25 03:59:51977 return AreURLsInPageNavigation(last_committed->GetURL(), url);
[email protected]e9ba4472008-09-14 15:42:43978}
979
[email protected]d202a7c2012-01-04 07:53:47980void NavigationControllerImpl::CopyStateFrom(
[email protected]c5eed492012-01-04 17:07:50981 const NavigationController& temp) {
[email protected]d202a7c2012-01-04 07:53:47982 const NavigationControllerImpl& source =
983 static_cast<const NavigationControllerImpl&>(temp);
[email protected]ce3fa3c2009-04-20 19:55:57984 // Verify that we look new.
[email protected]a26023822011-12-29 00:23:55985 DCHECK(GetEntryCount() == 0 && !GetPendingEntry());
[email protected]ce3fa3c2009-04-20 19:55:57986
[email protected]a26023822011-12-29 00:23:55987 if (source.GetEntryCount() == 0)
[email protected]ce3fa3c2009-04-20 19:55:57988 return; // Nothing new to do.
989
990 needs_reload_ = true;
[email protected]a26023822011-12-29 00:23:55991 InsertEntriesFrom(source, source.GetEntryCount());
[email protected]ce3fa3c2009-04-20 19:55:57992
[email protected]6ee12c42010-09-14 09:36:07993 session_storage_namespace_ = source.session_storage_namespace_->Clone();
[email protected]4e6419c2010-01-15 04:50:34994
[email protected]5e369672009-11-03 23:48:30995 FinishRestore(source.last_committed_entry_index_, false);
[email protected]91854cd2012-01-10 19:43:57996
997 // Copy the max page id map from the old tab to the new tab. This ensures
998 // that new and existing navigations in the tab's current SiteInstances
999 // are identified properly.
1000 tab_contents_->CopyMaxPageIDsFrom(source.tab_contents());
[email protected]ce3fa3c2009-04-20 19:55:571001}
1002
[email protected]d202a7c2012-01-04 07:53:471003void NavigationControllerImpl::CopyStateFromAndPrune(
[email protected]c5eed492012-01-04 17:07:501004 NavigationController* temp) {
[email protected]d202a7c2012-01-04 07:53:471005 NavigationControllerImpl* source =
1006 static_cast<NavigationControllerImpl*>(temp);
[email protected]9e1ad4b2011-08-14 16:49:191007 // The SiteInstance and page_id of the last committed entry needs to be
1008 // remembered at this point, in case there is only one committed entry
[email protected]91854cd2012-01-10 19:43:571009 // and it is pruned. We use a scoped_refptr to ensure the SiteInstance
1010 // can't be freed during this time period.
[email protected]10f417c52011-12-28 21:04:231011 NavigationEntryImpl* last_committed =
1012 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry());
[email protected]91854cd2012-01-10 19:43:571013 scoped_refptr<SiteInstance> site_instance(
1014 last_committed ? last_committed->site_instance() : NULL);
[email protected]36fc0392011-12-25 03:59:511015 int32 minimum_page_id = last_committed ? last_committed->GetPageID() : -1;
[email protected]91854cd2012-01-10 19:43:571016 int32 max_page_id = last_committed ?
1017 tab_contents_->GetMaxPageIDForSiteInstance(site_instance.get()) : -1;
[email protected]9e1ad4b2011-08-14 16:49:191018
[email protected]e1cd5452010-08-26 18:03:251019 // This code is intended for use when the last entry is the active entry.
[email protected]a26023822011-12-29 00:23:551020 DCHECK(
1021 (transient_entry_index_ != -1 &&
[email protected]91854cd2012-01-10 19:43:571022 transient_entry_index_ == GetEntryCount() - 1) ||
[email protected]a26023822011-12-29 00:23:551023 (pending_entry_ && (pending_entry_index_ == -1 ||
1024 pending_entry_index_ == GetEntryCount() - 1)) ||
1025 (!pending_entry_ && last_committed_entry_index_ == GetEntryCount() - 1));
[email protected]e1cd5452010-08-26 18:03:251026
1027 // Remove all the entries leaving the active entry.
1028 PruneAllButActive();
1029
[email protected]47e020a2010-10-15 14:43:371030 // Insert the entries from source. Don't use source->GetCurrentEntryIndex as
[email protected]e1cd5452010-08-26 18:03:251031 // we don't want to copy over the transient entry.
[email protected]47e020a2010-10-15 14:43:371032 int max_source_index = source->pending_entry_index_ != -1 ?
1033 source->pending_entry_index_ : source->last_committed_entry_index_;
[email protected]e1cd5452010-08-26 18:03:251034 if (max_source_index == -1)
[email protected]a26023822011-12-29 00:23:551035 max_source_index = source->GetEntryCount();
[email protected]e1cd5452010-08-26 18:03:251036 else
1037 max_source_index++;
[email protected]47e020a2010-10-15 14:43:371038 InsertEntriesFrom(*source, max_source_index);
[email protected]e1cd5452010-08-26 18:03:251039
1040 // Adjust indices such that the last entry and pending are at the end now.
[email protected]a26023822011-12-29 00:23:551041 last_committed_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251042 if (pending_entry_index_ != -1)
[email protected]a26023822011-12-29 00:23:551043 pending_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251044 if (transient_entry_index_ != -1) {
1045 // There's a transient entry. In this case we want the last committed to
1046 // point to the previous entry.
[email protected]a26023822011-12-29 00:23:551047 transient_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251048 if (last_committed_entry_index_ != -1)
1049 last_committed_entry_index_--;
1050 }
[email protected]796931a92011-08-10 01:32:141051
[email protected]91854cd2012-01-10 19:43:571052 tab_contents_->SetHistoryLengthAndPrune(site_instance.get(),
[email protected]9e1ad4b2011-08-14 16:49:191053 max_source_index,
1054 minimum_page_id);
[email protected]91854cd2012-01-10 19:43:571055
1056 // Copy the max page id map from the old tab to the new tab. This ensures
1057 // that new and existing navigations in the tab's current SiteInstances
1058 // are identified properly.
1059 tab_contents_->CopyMaxPageIDsFrom(source->tab_contents());
1060
1061 // If there is a last committed entry, be sure to include it in the new
1062 // max page ID map.
1063 if (max_page_id > -1) {
1064 tab_contents_->UpdateMaxPageIDForSiteInstance(site_instance.get(),
1065 max_page_id);
1066 }
[email protected]e1cd5452010-08-26 18:03:251067}
1068
[email protected]d202a7c2012-01-04 07:53:471069void NavigationControllerImpl::PruneAllButActive() {
[email protected]97b6c4f2010-09-27 19:31:261070 if (transient_entry_index_ != -1) {
1071 // There is a transient entry. Prune up to it.
[email protected]a26023822011-12-29 00:23:551072 DCHECK_EQ(GetEntryCount() - 1, transient_entry_index_);
[email protected]77d8d622010-12-15 10:30:121073 entries_.erase(entries_.begin(), entries_.begin() + transient_entry_index_);
[email protected]97b6c4f2010-09-27 19:31:261074 transient_entry_index_ = 0;
1075 last_committed_entry_index_ = -1;
1076 pending_entry_index_ = -1;
1077 } else if (!pending_entry_) {
1078 // There's no pending entry. Leave the last entry (if there is one).
[email protected]a26023822011-12-29 00:23:551079 if (!GetEntryCount())
[email protected]97b6c4f2010-09-27 19:31:261080 return;
1081
[email protected]77d8d622010-12-15 10:30:121082 DCHECK(last_committed_entry_index_ >= 0);
1083 entries_.erase(entries_.begin(),
1084 entries_.begin() + last_committed_entry_index_);
1085 entries_.erase(entries_.begin() + 1, entries_.end());
[email protected]97b6c4f2010-09-27 19:31:261086 last_committed_entry_index_ = 0;
1087 } else if (pending_entry_index_ != -1) {
[email protected]77d8d622010-12-15 10:30:121088 entries_.erase(entries_.begin(), entries_.begin() + pending_entry_index_);
1089 entries_.erase(entries_.begin() + 1, entries_.end());
[email protected]97b6c4f2010-09-27 19:31:261090 pending_entry_index_ = 0;
1091 last_committed_entry_index_ = 0;
[email protected]97b6c4f2010-09-27 19:31:261092 } else {
1093 // There is a pending_entry, but it's not in entries_.
1094 pending_entry_index_ = -1;
1095 last_committed_entry_index_ = -1;
[email protected]77d8d622010-12-15 10:30:121096 entries_.clear();
[email protected]97b6c4f2010-09-27 19:31:261097 }
1098
[email protected]0bfbf882011-12-22 18:19:271099 if (tab_contents_->GetInterstitialPage()) {
[email protected]97b6c4f2010-09-27 19:31:261100 // Normally the interstitial page hides itself if the user doesn't proceeed.
1101 // This would result in showing a NavigationEntry we just removed. Set this
1102 // so the interstitial triggers a reload if the user doesn't proceed.
[email protected]0bfbf882011-12-22 18:19:271103 tab_contents_->GetInterstitialPage()->set_reload_on_dont_proceed(true);
[email protected]97b6c4f2010-09-27 19:31:261104 }
[email protected]97b6c4f2010-09-27 19:31:261105}
1106
[email protected]d202a7c2012-01-04 07:53:471107SSLManager* NavigationControllerImpl::GetSSLManager() {
[email protected]71fde352011-12-29 03:29:561108 return &ssl_manager_;
1109}
1110
[email protected]d202a7c2012-01-04 07:53:471111void NavigationControllerImpl::SetMaxRestoredPageID(int32 max_id) {
[email protected]71fde352011-12-29 03:29:561112 max_restored_page_id_ = max_id;
1113}
1114
[email protected]d202a7c2012-01-04 07:53:471115int32 NavigationControllerImpl::GetMaxRestoredPageID() const {
[email protected]71fde352011-12-29 03:29:561116 return max_restored_page_id_;
[email protected]a26023822011-12-29 00:23:551117}
1118
1119SessionStorageNamespace*
[email protected]d202a7c2012-01-04 07:53:471120 NavigationControllerImpl::GetSessionStorageNamespace() const {
[email protected]a26023822011-12-29 00:23:551121 return session_storage_namespace_;
1122}
[email protected]d202a7c2012-01-04 07:53:471123
1124bool NavigationControllerImpl::NeedsReload() const {
[email protected]71fde352011-12-29 03:29:561125 return needs_reload_;
1126}
[email protected]a26023822011-12-29 00:23:551127
[email protected]d202a7c2012-01-04 07:53:471128void NavigationControllerImpl::RemoveEntryAtIndexInternal(int index) {
[email protected]a26023822011-12-29 00:23:551129 DCHECK(index < GetEntryCount());
[email protected]6a13a6c2011-12-20 21:47:121130 DCHECK(index != last_committed_entry_index_);
[email protected]43032342011-03-21 14:10:311131
1132 DiscardNonCommittedEntries();
1133
1134 entries_.erase(entries_.begin() + index);
[email protected]6a13a6c2011-12-20 21:47:121135 if (last_committed_entry_index_ > index)
[email protected]43032342011-03-21 14:10:311136 last_committed_entry_index_--;
1137}
1138
[email protected]d202a7c2012-01-04 07:53:471139void NavigationControllerImpl::DiscardNonCommittedEntries() {
[email protected]cbab76d2008-10-13 22:42:471140 bool transient = transient_entry_index_ != -1;
1141 DiscardNonCommittedEntriesInternal();
initial.commit09911bf2008-07-26 23:55:291142
[email protected]cbab76d2008-10-13 22:42:471143 // If there was a transient entry, invalidate everything so the new active
1144 // entry state is shown.
1145 if (transient) {
[email protected]93f230e02011-06-01 14:40:001146 tab_contents_->NotifyNavigationStateChanged(kInvalidateAll);
[email protected]cbab76d2008-10-13 22:42:471147 }
initial.commit09911bf2008-07-26 23:55:291148}
1149
[email protected]d202a7c2012-01-04 07:53:471150NavigationEntry* NavigationControllerImpl::GetPendingEntry() const {
[email protected]022af742011-12-28 18:37:251151 return pending_entry_;
1152}
1153
[email protected]d202a7c2012-01-04 07:53:471154int NavigationControllerImpl::GetPendingEntryIndex() const {
[email protected]a26023822011-12-29 00:23:551155 return pending_entry_index_;
1156}
1157
[email protected]d202a7c2012-01-04 07:53:471158void NavigationControllerImpl::InsertOrReplaceEntry(NavigationEntryImpl* entry,
1159 bool replace) {
[email protected]36fc0392011-12-25 03:59:511160 DCHECK(entry->GetTransitionType() != content::PAGE_TRANSITION_AUTO_SUBFRAME);
[email protected]765b35502008-08-21 00:51:201161
1162 // Copy the pending entry's unique ID to the committed entry.
1163 // I don't know if pending_entry_index_ can be other than -1 here.
[email protected]10f417c52011-12-28 21:04:231164 const NavigationEntryImpl* const pending_entry =
1165 (pending_entry_index_ == -1) ?
1166 pending_entry_ : entries_[pending_entry_index_].get();
[email protected]765b35502008-08-21 00:51:201167 if (pending_entry)
[email protected]36fc0392011-12-25 03:59:511168 entry->set_unique_id(pending_entry->GetUniqueID());
[email protected]765b35502008-08-21 00:51:201169
[email protected]cbab76d2008-10-13 22:42:471170 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:201171
1172 int current_size = static_cast<int>(entries_.size());
1173
[email protected]765b35502008-08-21 00:51:201174 if (current_size > 0) {
[email protected]672eba292009-05-13 13:22:451175 // Prune any entries which are in front of the current entry.
1176 // Also prune the current entry if we are to replace the current entry.
[email protected]47dcbdc2011-05-27 15:08:311177 // last_committed_entry_index_ must be updated here since calls to
1178 // NotifyPrunedEntries() below may re-enter and we must make sure
1179 // last_committed_entry_index_ is not left in an invalid state.
1180 if (replace)
1181 --last_committed_entry_index_;
1182
[email protected]c12bf1a12008-09-17 16:28:491183 int num_pruned = 0;
[email protected]47dcbdc2011-05-27 15:08:311184 while (last_committed_entry_index_ < (current_size - 1)) {
[email protected]c12bf1a12008-09-17 16:28:491185 num_pruned++;
[email protected]765b35502008-08-21 00:51:201186 entries_.pop_back();
1187 current_size--;
1188 }
[email protected]c12bf1a12008-09-17 16:28:491189 if (num_pruned > 0) // Only notify if we did prune something.
1190 NotifyPrunedEntries(this, false, num_pruned);
[email protected]765b35502008-08-21 00:51:201191 }
1192
[email protected]9b51970d2011-12-09 23:10:231193 if (entries_.size() >= max_entry_count()) {
[email protected]6a13a6c2011-12-20 21:47:121194 DCHECK(last_committed_entry_index_ > 0);
1195 RemoveEntryAtIndex(0);
[email protected]c12bf1a12008-09-17 16:28:491196 NotifyPrunedEntries(this, true, 1);
1197 }
[email protected]765b35502008-08-21 00:51:201198
[email protected]10f417c52011-12-28 21:04:231199 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry));
[email protected]765b35502008-08-21 00:51:201200 last_committed_entry_index_ = static_cast<int>(entries_.size()) - 1;
[email protected]e9ba4472008-09-14 15:42:431201
1202 // This is a new page ID, so we need everybody to know about it.
[email protected]36fc0392011-12-25 03:59:511203 tab_contents_->UpdateMaxPageID(entry->GetPageID());
initial.commit09911bf2008-07-26 23:55:291204}
1205
[email protected]d202a7c2012-01-04 07:53:471206void NavigationControllerImpl::NavigateToPendingEntry(ReloadType reload_type) {
[email protected]72097fd02010-01-21 23:36:011207 needs_reload_ = false;
1208
[email protected]83c2e232011-10-07 21:36:461209 // If we were navigating to a slow-to-commit page, and the user performs
1210 // a session history navigation to the last committed page, RenderViewHost
1211 // will force the throbber to start, but WebKit will essentially ignore the
1212 // navigation, and won't send a message to stop the throbber. To prevent this
1213 // from happening, we drop the navigation here and stop the slow-to-commit
1214 // page from loading (which would normally happen during the navigation).
1215 if (pending_entry_index_ != -1 &&
1216 pending_entry_index_ == last_committed_entry_index_ &&
1217 (entries_[pending_entry_index_]->restore_type() ==
[email protected]10f417c52011-12-28 21:04:231218 NavigationEntryImpl::RESTORE_NONE) &&
[email protected]36fc0392011-12-25 03:59:511219 (entries_[pending_entry_index_]->GetTransitionType() &
[email protected]2905f742011-10-13 03:51:581220 content::PAGE_TRANSITION_FORWARD_BACK)) {
[email protected]83c2e232011-10-07 21:36:461221 tab_contents_->Stop();
[email protected]6a13a6c2011-12-20 21:47:121222
1223 // If an interstitial page is showing, we want to close it to get back
1224 // to what was showing before.
[email protected]0bfbf882011-12-22 18:19:271225 if (tab_contents_->GetInterstitialPage())
1226 tab_contents_->GetInterstitialPage()->DontProceed();
[email protected]6a13a6c2011-12-20 21:47:121227
[email protected]83c2e232011-10-07 21:36:461228 DiscardNonCommittedEntries();
1229 return;
1230 }
1231
[email protected]6a13a6c2011-12-20 21:47:121232 // If an interstitial page is showing, the previous renderer is blocked and
1233 // cannot make new requests. Unblock (and disable) it to allow this
1234 // navigation to succeed. The interstitial will stay visible until the
1235 // resulting DidNavigate.
[email protected]0bfbf882011-12-22 18:19:271236 if (tab_contents_->GetInterstitialPage())
1237 tab_contents_->GetInterstitialPage()->CancelForNavigation();
[email protected]6a13a6c2011-12-20 21:47:121238
initial.commit09911bf2008-07-26 23:55:291239 // For session history navigations only the pending_entry_index_ is set.
1240 if (!pending_entry_) {
[email protected]4bf3522c2010-08-19 21:00:201241 DCHECK_NE(pending_entry_index_, -1);
[email protected]765b35502008-08-21 00:51:201242 pending_entry_ = entries_[pending_entry_index_].get();
initial.commit09911bf2008-07-26 23:55:291243 }
1244
[email protected]1ccb3568d2010-02-19 10:51:161245 if (!tab_contents_->NavigateToPendingEntry(reload_type))
[email protected]cbab76d2008-10-13 22:42:471246 DiscardNonCommittedEntries();
[email protected]77362eb2011-08-01 17:18:381247
1248 // If the entry is being restored and doesn't have a SiteInstance yet, fill
1249 // it in now that we know. This allows us to find the entry when it commits.
1250 // This works for browser-initiated navigations. We handle renderer-initiated
1251 // navigations to restored entries in TabContents::OnGoToEntryAtOffset.
1252 if (pending_entry_ && !pending_entry_->site_instance() &&
[email protected]10f417c52011-12-28 21:04:231253 pending_entry_->restore_type() != NavigationEntryImpl::RESTORE_NONE) {
[email protected]b6583592012-01-25 19:52:331254 pending_entry_->set_site_instance(static_cast<SiteInstanceImpl*>(
1255 tab_contents_->GetPendingSiteInstance()));
[email protected]10f417c52011-12-28 21:04:231256 pending_entry_->set_restore_type(NavigationEntryImpl::RESTORE_NONE);
[email protected]77362eb2011-08-01 17:18:381257 }
initial.commit09911bf2008-07-26 23:55:291258}
1259
[email protected]d202a7c2012-01-04 07:53:471260void NavigationControllerImpl::NotifyNavigationEntryCommitted(
[email protected]93f230e02011-06-01 14:40:001261 content::LoadCommittedDetails* details) {
[email protected]df1af242009-05-01 00:11:401262 details->entry = GetActiveEntry();
[email protected]6c2381d2011-10-19 02:52:531263 content::NotificationDetails notification_details =
1264 content::Details<content::LoadCommittedDetails>(details);
[email protected]df1af242009-05-01 00:11:401265
1266 // We need to notify the ssl_manager_ before the tab_contents_ so the
1267 // location bar will have up-to-date information about the security style
1268 // when it wants to draw. See http://crbug.com/11157
1269 ssl_manager_.DidCommitProvisionalLoad(notification_details);
1270
initial.commit09911bf2008-07-26 23:55:291271 // TODO(pkasting): http://b/1113079 Probably these explicit notification paths
1272 // should be removed, and interested parties should just listen for the
1273 // notification below instead.
[email protected]93f230e02011-06-01 14:40:001274 tab_contents_->NotifyNavigationStateChanged(kInvalidateAll);
initial.commit09911bf2008-07-26 23:55:291275
[email protected]ad50def52011-10-19 23:17:071276 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:271277 content::NOTIFICATION_NAV_ENTRY_COMMITTED,
[email protected]c5eed492012-01-04 17:07:501278 content::Source<NavigationController>(this),
[email protected]df1af242009-05-01 00:11:401279 notification_details);
initial.commit09911bf2008-07-26 23:55:291280}
1281
initial.commit09911bf2008-07-26 23:55:291282// static
[email protected]d202a7c2012-01-04 07:53:471283size_t NavigationControllerImpl::max_entry_count() {
[email protected]9b51970d2011-12-09 23:10:231284 if (max_entry_count_for_testing_ != kMaxEntryCountForTestingNotSet)
1285 return max_entry_count_for_testing_;
1286 return content::kMaxSessionHistoryEntries;
1287}
1288
[email protected]d202a7c2012-01-04 07:53:471289void NavigationControllerImpl::SetActive(bool is_active) {
[email protected]ee613922009-09-02 20:38:221290 if (is_active && needs_reload_)
1291 LoadIfNecessary();
initial.commit09911bf2008-07-26 23:55:291292}
1293
[email protected]d202a7c2012-01-04 07:53:471294void NavigationControllerImpl::LoadIfNecessary() {
initial.commit09911bf2008-07-26 23:55:291295 if (!needs_reload_)
1296 return;
1297
initial.commit09911bf2008-07-26 23:55:291298 // Calling Reload() results in ignoring state, and not loading.
1299 // Explicitly use NavigateToPendingEntry so that the renderer uses the
1300 // cached state.
1301 pending_entry_index_ = last_committed_entry_index_;
[email protected]1ccb3568d2010-02-19 10:51:161302 NavigateToPendingEntry(NO_RELOAD);
initial.commit09911bf2008-07-26 23:55:291303}
1304
[email protected]d202a7c2012-01-04 07:53:471305void NavigationControllerImpl::NotifyEntryChanged(const NavigationEntry* entry,
1306 int index) {
[email protected]8286f51a2011-05-31 17:39:131307 content::EntryChangedDetails det;
[email protected]534e54b2008-08-13 15:40:091308 det.changed_entry = entry;
1309 det.index = index;
[email protected]ad50def52011-10-19 23:17:071310 content::NotificationService::current()->Notify(
[email protected]432115822011-07-10 15:52:271311 content::NOTIFICATION_NAV_ENTRY_CHANGED,
[email protected]c5eed492012-01-04 17:07:501312 content::Source<NavigationController>(this),
[email protected]6c2381d2011-10-19 02:52:531313 content::Details<content::EntryChangedDetails>(&det));
initial.commit09911bf2008-07-26 23:55:291314}
1315
[email protected]d202a7c2012-01-04 07:53:471316void NavigationControllerImpl::FinishRestore(int selected_index,
1317 bool from_last_session) {
[email protected]a26023822011-12-29 00:23:551318 DCHECK(selected_index >= 0 && selected_index < GetEntryCount());
[email protected]5e369672009-11-03 23:48:301319 ConfigureEntriesForRestore(&entries_, from_last_session);
initial.commit09911bf2008-07-26 23:55:291320
[email protected]71fde352011-12-29 03:29:561321 SetMaxRestoredPageID(static_cast<int32>(GetEntryCount()));
initial.commit09911bf2008-07-26 23:55:291322
1323 last_committed_entry_index_ = selected_index;
initial.commit09911bf2008-07-26 23:55:291324}
[email protected]765b35502008-08-21 00:51:201325
[email protected]d202a7c2012-01-04 07:53:471326void NavigationControllerImpl::DiscardNonCommittedEntriesInternal() {
[email protected]765b35502008-08-21 00:51:201327 if (pending_entry_index_ == -1)
1328 delete pending_entry_;
1329 pending_entry_ = NULL;
1330 pending_entry_index_ = -1;
[email protected]cbab76d2008-10-13 22:42:471331
1332 DiscardTransientEntry();
1333}
1334
[email protected]d202a7c2012-01-04 07:53:471335void NavigationControllerImpl::DiscardTransientEntry() {
[email protected]cbab76d2008-10-13 22:42:471336 if (transient_entry_index_ == -1)
1337 return;
[email protected]a0e69262009-06-03 19:08:481338 entries_.erase(entries_.begin() + transient_entry_index_);
[email protected]80858db52009-10-15 00:35:181339 if (last_committed_entry_index_ > transient_entry_index_)
1340 last_committed_entry_index_--;
[email protected]cbab76d2008-10-13 22:42:471341 transient_entry_index_ = -1;
[email protected]765b35502008-08-21 00:51:201342}
1343
[email protected]d202a7c2012-01-04 07:53:471344int NavigationControllerImpl::GetEntryIndexWithPageID(
[email protected]7f0005a2009-04-15 03:25:111345 SiteInstance* instance, int32 page_id) const {
[email protected]765b35502008-08-21 00:51:201346 for (int i = static_cast<int>(entries_.size()) - 1; i >= 0; --i) {
[email protected]7f0005a2009-04-15 03:25:111347 if ((entries_[i]->site_instance() == instance) &&
[email protected]36fc0392011-12-25 03:59:511348 (entries_[i]->GetPageID() == page_id))
[email protected]765b35502008-08-21 00:51:201349 return i;
1350 }
1351 return -1;
1352}
[email protected]cbab76d2008-10-13 22:42:471353
[email protected]d202a7c2012-01-04 07:53:471354NavigationEntry* NavigationControllerImpl::GetTransientEntry() const {
[email protected]cbab76d2008-10-13 22:42:471355 if (transient_entry_index_ == -1)
1356 return NULL;
1357 return entries_[transient_entry_index_].get();
1358}
[email protected]e1cd5452010-08-26 18:03:251359
[email protected]d202a7c2012-01-04 07:53:471360void NavigationControllerImpl::InsertEntriesFrom(
1361 const NavigationControllerImpl& source,
[email protected]e1cd5452010-08-26 18:03:251362 int max_index) {
[email protected]a26023822011-12-29 00:23:551363 DCHECK_LE(max_index, source.GetEntryCount());
[email protected]e1cd5452010-08-26 18:03:251364 size_t insert_index = 0;
1365 for (int i = 0; i < max_index; i++) {
1366 // When cloning a tab, copy all entries except interstitial pages
[email protected]ad23a092011-12-28 07:02:041367 if (source.entries_[i].get()->GetPageType() !=
[email protected]66fdbd52011-10-18 17:08:531368 content::PAGE_TYPE_INTERSTITIAL) {
[email protected]e1cd5452010-08-26 18:03:251369 entries_.insert(entries_.begin() + insert_index++,
[email protected]10f417c52011-12-28 21:04:231370 linked_ptr<NavigationEntryImpl>(
1371 new NavigationEntryImpl(*source.entries_[i])));
[email protected]e1cd5452010-08-26 18:03:251372 }
1373 }
1374}