| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/tab_contents/navigation_controller.h" | |
| 6 | |
| 7 #include "base/file_util.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/string_util.h" | |
| 10 #include "base/time.h" | |
| 11 #include "base/utf_string_conversions.h" | |
| 12 #include "chrome/browser/browser_about_handler.h" | |
| 13 #include "chrome/browser/browser_url_handler.h" | |
| 14 #include "chrome/browser/in_process_webkit/session_storage_namespace.h" | |
| 15 #include "chrome/browser/prefs/pref_service.h" | |
| 16 #include "chrome/browser/profiles/profile.h" | |
| 17 #include "chrome/browser/renderer_host/site_instance.h" | |
| 18 #include "chrome/browser/sessions/session_types.h" | |
| 19 #include "chrome/browser/tab_contents/interstitial_page.h" | |
| 20 #include "chrome/browser/tab_contents/navigation_entry.h" | |
| 21 #include "chrome/browser/tab_contents/tab_contents.h" | |
| 22 #include "chrome/browser/tab_contents/tab_contents_delegate.h" | |
| 23 #include "chrome/common/chrome_constants.h" | |
| 24 #include "chrome/common/navigation_types.h" | |
| 25 #include "chrome/common/notification_service.h" | |
| 26 #include "chrome/common/pref_names.h" | |
| 27 #include "chrome/common/render_messages_params.h" | |
| 28 #include "chrome/common/url_constants.h" | |
| 29 #include "grit/app_resources.h" | |
| 30 #include "net/base/escape.h" | |
| 31 #include "net/base/net_util.h" | |
| 32 #include "net/base/mime_util.h" | |
| 33 #include "webkit/glue/webkit_glue.h" | |
| 34 | |
| 35 namespace { | |
| 36 | |
| 37 const int kInvalidateAllButShelves = | |
| 38 0xFFFFFFFF & ~TabContents::INVALIDATE_BOOKMARK_BAR; | |
| 39 | |
| 40 // Invoked when entries have been pruned, or removed. For example, if the | |
| 41 // current entries are [google, digg, yahoo], with the current entry google, | |
| 42 // and the user types in cnet, then digg and yahoo are pruned. | |
| 43 void NotifyPrunedEntries(NavigationController* nav_controller, | |
| 44 bool from_front, | |
| 45 int count) { | |
| 46 NavigationController::PrunedDetails details; | |
| 47 details.from_front = from_front; | |
| 48 details.count = count; | |
| 49 NotificationService::current()->Notify( | |
| 50 NotificationType::NAV_LIST_PRUNED, | |
| 51 Source<NavigationController>(nav_controller), | |
| 52 Details<NavigationController::PrunedDetails>(&details)); | |
| 53 } | |
| 54 | |
| 55 // Ensure the given NavigationEntry has a valid state, so that WebKit does not | |
| 56 // get confused if we navigate back to it. | |
| 57 // | |
| 58 // An empty state is treated as a new navigation by WebKit, which would mean | |
| 59 // losing the navigation entries and generating a new navigation entry after | |
| 60 // this one. We don't want that. To avoid this we create a valid state which | |
| 61 // WebKit will not treat as a new navigation. | |
| 62 void SetContentStateIfEmpty(NavigationEntry* entry) { | |
| 63 if (entry->content_state().empty()) { | |
| 64 entry->set_content_state( | |
| 65 webkit_glue::CreateHistoryStateForURL(entry->url())); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 // Configure all the NavigationEntries in entries for restore. This resets | |
| 70 // the transition type to reload and makes sure the content state isn't empty. | |
| 71 void ConfigureEntriesForRestore( | |
| 72 std::vector<linked_ptr<NavigationEntry> >* entries, | |
| 73 bool from_last_session) { | |
| 74 for (size_t i = 0; i < entries->size(); ++i) { | |
| 75 // Use a transition type of reload so that we don't incorrectly increase | |
| 76 // the typed count. | |
| 77 (*entries)[i]->set_transition_type(PageTransition::RELOAD); | |
| 78 (*entries)[i]->set_restore_type(from_last_session ? | |
| 79 NavigationEntry::RESTORE_LAST_SESSION : | |
| 80 NavigationEntry::RESTORE_CURRENT_SESSION); | |
| 81 // NOTE(darin): This code is only needed for backwards compat. | |
| 82 SetContentStateIfEmpty((*entries)[i].get()); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 // See NavigationController::IsURLInPageNavigation for how this works and why. | |
| 87 bool AreURLsInPageNavigation(const GURL& existing_url, const GURL& new_url) { | |
| 88 if (existing_url == new_url || !new_url.has_ref()) { | |
| 89 // TODO(jcampan): what about when navigating back from a ref URL to the top | |
| 90 // non ref URL? Nothing is loaded in that case but we return false here. | |
| 91 // The user could also navigate from the ref URL to the non ref URL by | |
| 92 // entering the non ref URL in the location bar or through a bookmark, in | |
| 93 // which case there would be a load. I am not sure if the non-load/load | |
| 94 // scenarios can be differentiated with the TransitionType. | |
| 95 return false; | |
| 96 } | |
| 97 | |
| 98 url_canon::Replacements<char> replacements; | |
| 99 replacements.ClearRef(); | |
| 100 return existing_url.ReplaceComponents(replacements) == | |
| 101 new_url.ReplaceComponents(replacements); | |
| 102 } | |
| 103 | |
| 104 } // namespace | |
| 105 | |
| 106 // NavigationController --------------------------------------------------- | |
| 107 | |
| 108 // static | |
| 109 size_t NavigationController::max_entry_count_ = | |
| 110 chrome::kMaxSessionHistoryEntries; | |
| 111 | |
| 112 // static | |
| 113 bool NavigationController::check_for_repost_ = true; | |
| 114 | |
| 115 NavigationController::NavigationController( | |
| 116 TabContents* contents, | |
| 117 Profile* profile, | |
| 118 SessionStorageNamespace* session_storage_namespace) | |
| 119 : profile_(profile), | |
| 120 pending_entry_(NULL), | |
| 121 last_committed_entry_index_(-1), | |
| 122 pending_entry_index_(-1), | |
| 123 transient_entry_index_(-1), | |
| 124 tab_contents_(contents), | |
| 125 max_restored_page_id_(-1), | |
| 126 ALLOW_THIS_IN_INITIALIZER_LIST(ssl_manager_(this)), | |
| 127 needs_reload_(false), | |
| 128 session_storage_namespace_(session_storage_namespace), | |
| 129 pending_reload_(NO_RELOAD) { | |
| 130 DCHECK(profile_); | |
| 131 if (!session_storage_namespace_) | |
| 132 session_storage_namespace_ = new SessionStorageNamespace(profile_); | |
| 133 } | |
| 134 | |
| 135 NavigationController::~NavigationController() { | |
| 136 DiscardNonCommittedEntriesInternal(); | |
| 137 | |
| 138 NotificationService::current()->Notify( | |
| 139 NotificationType::TAB_CLOSED, | |
| 140 Source<NavigationController>(this), | |
| 141 NotificationService::NoDetails()); | |
| 142 } | |
| 143 | |
| 144 void NavigationController::RestoreFromState( | |
| 145 const std::vector<TabNavigation>& navigations, | |
| 146 int selected_navigation, | |
| 147 bool from_last_session) { | |
| 148 // Verify that this controller is unused and that the input is valid. | |
| 149 DCHECK(entry_count() == 0 && !pending_entry()); | |
| 150 DCHECK(selected_navigation >= 0 && | |
| 151 selected_navigation < static_cast<int>(navigations.size())); | |
| 152 | |
| 153 // Populate entries_ from the supplied TabNavigations. | |
| 154 needs_reload_ = true; | |
| 155 CreateNavigationEntriesFromTabNavigations(navigations, &entries_); | |
| 156 | |
| 157 // And finish the restore. | |
| 158 FinishRestore(selected_navigation, from_last_session); | |
| 159 } | |
| 160 | |
| 161 void NavigationController::Reload(bool check_for_repost) { | |
| 162 ReloadInternal(check_for_repost, RELOAD); | |
| 163 } | |
| 164 void NavigationController::ReloadIgnoringCache(bool check_for_repost) { | |
| 165 ReloadInternal(check_for_repost, RELOAD_IGNORING_CACHE); | |
| 166 } | |
| 167 | |
| 168 void NavigationController::ReloadInternal(bool check_for_repost, | |
| 169 ReloadType reload_type) { | |
| 170 // Reloading a transient entry does nothing. | |
| 171 if (transient_entry_index_ != -1) | |
| 172 return; | |
| 173 | |
| 174 DiscardNonCommittedEntriesInternal(); | |
| 175 int current_index = GetCurrentEntryIndex(); | |
| 176 // If we are no where, then we can't reload. TODO(darin): We should add a | |
| 177 // CanReload method. | |
| 178 if (current_index == -1) { | |
| 179 return; | |
| 180 } | |
| 181 | |
| 182 if (check_for_repost_ && check_for_repost && | |
| 183 GetEntryAtIndex(current_index)->has_post_data()) { | |
| 184 // The user is asking to reload a page with POST data. Prompt to make sure | |
| 185 // they really want to do this. If they do, the dialog will call us back | |
| 186 // with check_for_repost = false. | |
| 187 NotificationService::current()->Notify( | |
| 188 NotificationType::REPOST_WARNING_SHOWN, | |
| 189 Source<NavigationController>(this), | |
| 190 NotificationService::NoDetails()); | |
| 191 | |
| 192 pending_reload_ = reload_type; | |
| 193 tab_contents_->Activate(); | |
| 194 tab_contents_->delegate()->ShowRepostFormWarningDialog(tab_contents_); | |
| 195 } else { | |
| 196 DiscardNonCommittedEntriesInternal(); | |
| 197 | |
| 198 pending_entry_index_ = current_index; | |
| 199 entries_[pending_entry_index_]->set_transition_type(PageTransition::RELOAD); | |
| 200 NavigateToPendingEntry(reload_type); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 void NavigationController::CancelPendingReload() { | |
| 205 DCHECK(pending_reload_ != NO_RELOAD); | |
| 206 pending_reload_ = NO_RELOAD; | |
| 207 } | |
| 208 | |
| 209 void NavigationController::ContinuePendingReload() { | |
| 210 if (pending_reload_ == NO_RELOAD) { | |
| 211 NOTREACHED(); | |
| 212 } else { | |
| 213 ReloadInternal(false, pending_reload_); | |
| 214 pending_reload_ = NO_RELOAD; | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 bool NavigationController::IsInitialNavigation() { | |
| 219 return last_document_loaded_.is_null(); | |
| 220 } | |
| 221 | |
| 222 // static | |
| 223 NavigationEntry* NavigationController::CreateNavigationEntry( | |
| 224 const GURL& url, const GURL& referrer, PageTransition::Type transition, | |
| 225 Profile* profile) { | |
| 226 // Allow the browser URL handler to rewrite the URL. This will, for example, | |
| 227 // remove "view-source:" from the beginning of the URL to get the URL that | |
| 228 // will actually be loaded. This real URL won't be shown to the user, just | |
| 229 // used internally. | |
| 230 GURL loaded_url(url); | |
| 231 bool reverse_on_redirect = false; | |
| 232 BrowserURLHandler::RewriteURLIfNecessary( | |
| 233 &loaded_url, profile, &reverse_on_redirect); | |
| 234 | |
| 235 NavigationEntry* entry = new NavigationEntry( | |
| 236 NULL, // The site instance for tabs is sent on navigation | |
| 237 // (TabContents::GetSiteInstance). | |
| 238 -1, | |
| 239 loaded_url, | |
| 240 referrer, | |
| 241 string16(), | |
| 242 transition); | |
| 243 entry->set_virtual_url(url); | |
| 244 entry->set_user_typed_url(url); | |
| 245 entry->set_update_virtual_url_with_url(reverse_on_redirect); | |
| 246 if (url.SchemeIsFile()) { | |
| 247 // Use the filename as the title, not the full path. | |
| 248 // We need to call FormatUrl() to perform URL de-escaping; | |
| 249 // it's a bit ugly to grab the filename out of the resulting string. | |
| 250 std::string languages = | |
| 251 profile->GetPrefs()->GetString(prefs::kAcceptLanguages); | |
| 252 std::wstring formatted = UTF16ToWideHack(net::FormatUrl(url, languages)); | |
| 253 std::wstring filename = | |
| 254 FilePath::FromWStringHack(formatted).BaseName().ToWStringHack(); | |
| 255 entry->set_title(WideToUTF16Hack(filename)); | |
| 256 } | |
| 257 return entry; | |
| 258 } | |
| 259 | |
| 260 NavigationEntry* NavigationController::GetEntryWithPageID( | |
| 261 SiteInstance* instance, int32 page_id) const { | |
| 262 int index = GetEntryIndexWithPageID(instance, page_id); | |
| 263 return (index != -1) ? entries_[index].get() : NULL; | |
| 264 } | |
| 265 | |
| 266 void NavigationController::LoadEntry(NavigationEntry* entry) { | |
| 267 // Handle non-navigational URLs that popup dialogs and such, these should not | |
| 268 // actually navigate. | |
| 269 if (HandleNonNavigationAboutURL(entry->url())) | |
| 270 return; | |
| 271 | |
| 272 // When navigating to a new page, we don't know for sure if we will actually | |
| 273 // end up leaving the current page. The new page load could for example | |
| 274 // result in a download or a 'no content' response (e.g., a mailto: URL). | |
| 275 DiscardNonCommittedEntriesInternal(); | |
| 276 pending_entry_ = entry; | |
| 277 NotificationService::current()->Notify( | |
| 278 NotificationType::NAV_ENTRY_PENDING, | |
| 279 Source<NavigationController>(this), | |
| 280 NotificationService::NoDetails()); | |
| 281 NavigateToPendingEntry(NO_RELOAD); | |
| 282 } | |
| 283 | |
| 284 NavigationEntry* NavigationController::GetActiveEntry() const { | |
| 285 if (transient_entry_index_ != -1) | |
| 286 return entries_[transient_entry_index_].get(); | |
| 287 if (pending_entry_) | |
| 288 return pending_entry_; | |
| 289 return GetLastCommittedEntry(); | |
| 290 } | |
| 291 | |
| 292 int NavigationController::GetCurrentEntryIndex() const { | |
| 293 if (transient_entry_index_ != -1) | |
| 294 return transient_entry_index_; | |
| 295 if (pending_entry_index_ != -1) | |
| 296 return pending_entry_index_; | |
| 297 return last_committed_entry_index_; | |
| 298 } | |
| 299 | |
| 300 NavigationEntry* NavigationController::GetLastCommittedEntry() const { | |
| 301 if (last_committed_entry_index_ == -1) | |
| 302 return NULL; | |
| 303 return entries_[last_committed_entry_index_].get(); | |
| 304 } | |
| 305 | |
| 306 bool NavigationController::CanViewSource() const { | |
| 307 bool is_supported_mime_type = net::IsSupportedNonImageMimeType( | |
| 308 tab_contents_->contents_mime_type().c_str()); | |
| 309 NavigationEntry* active_entry = GetActiveEntry(); | |
| 310 return active_entry && !active_entry->IsViewSourceMode() && | |
| 311 is_supported_mime_type; | |
| 312 } | |
| 313 | |
| 314 NavigationEntry* NavigationController::GetEntryAtOffset(int offset) const { | |
| 315 int index = (transient_entry_index_ != -1) ? | |
| 316 transient_entry_index_ + offset : | |
| 317 last_committed_entry_index_ + offset; | |
| 318 if (index < 0 || index >= entry_count()) | |
| 319 return NULL; | |
| 320 | |
| 321 return entries_[index].get(); | |
| 322 } | |
| 323 | |
| 324 bool NavigationController::CanGoBack() const { | |
| 325 return entries_.size() > 1 && GetCurrentEntryIndex() > 0; | |
| 326 } | |
| 327 | |
| 328 bool NavigationController::CanGoForward() const { | |
| 329 int index = GetCurrentEntryIndex(); | |
| 330 return index >= 0 && index < (static_cast<int>(entries_.size()) - 1); | |
| 331 } | |
| 332 | |
| 333 void NavigationController::GoBack() { | |
| 334 if (!CanGoBack()) { | |
| 335 NOTREACHED(); | |
| 336 return; | |
| 337 } | |
| 338 | |
| 339 // If an interstitial page is showing, going back is equivalent to hiding the | |
| 340 // interstitial. | |
| 341 if (tab_contents_->interstitial_page()) { | |
| 342 tab_contents_->interstitial_page()->DontProceed(); | |
| 343 return; | |
| 344 } | |
| 345 | |
| 346 // Base the navigation on where we are now... | |
| 347 int current_index = GetCurrentEntryIndex(); | |
| 348 | |
| 349 DiscardNonCommittedEntries(); | |
| 350 | |
| 351 pending_entry_index_ = current_index - 1; | |
| 352 entries_[pending_entry_index_]->set_transition_type( | |
| 353 entries_[pending_entry_index_]->transition_type() | | |
| 354 PageTransition::FORWARD_BACK); | |
| 355 NavigateToPendingEntry(NO_RELOAD); | |
| 356 } | |
| 357 | |
| 358 void NavigationController::GoForward() { | |
| 359 if (!CanGoForward()) { | |
| 360 NOTREACHED(); | |
| 361 return; | |
| 362 } | |
| 363 | |
| 364 // If an interstitial page is showing, the previous renderer is blocked and | |
| 365 // cannot make new requests. Unblock (and disable) it to allow this | |
| 366 // navigation to succeed. The interstitial will stay visible until the | |
| 367 // resulting DidNavigate. | |
| 368 if (tab_contents_->interstitial_page()) { | |
| 369 tab_contents_->interstitial_page()->CancelForNavigation(); | |
| 370 } | |
| 371 | |
| 372 bool transient = (transient_entry_index_ != -1); | |
| 373 | |
| 374 // Base the navigation on where we are now... | |
| 375 int current_index = GetCurrentEntryIndex(); | |
| 376 | |
| 377 DiscardNonCommittedEntries(); | |
| 378 | |
| 379 pending_entry_index_ = current_index; | |
| 380 // If there was a transient entry, we removed it making the current index | |
| 381 // the next page. | |
| 382 if (!transient) | |
| 383 pending_entry_index_++; | |
| 384 | |
| 385 entries_[pending_entry_index_]->set_transition_type( | |
| 386 entries_[pending_entry_index_]->transition_type() | | |
| 387 PageTransition::FORWARD_BACK); | |
| 388 NavigateToPendingEntry(NO_RELOAD); | |
| 389 } | |
| 390 | |
| 391 void NavigationController::GoToIndex(int index) { | |
| 392 if (index < 0 || index >= static_cast<int>(entries_.size())) { | |
| 393 NOTREACHED(); | |
| 394 return; | |
| 395 } | |
| 396 | |
| 397 if (transient_entry_index_ != -1) { | |
| 398 if (index == transient_entry_index_) { | |
| 399 // Nothing to do when navigating to the transient. | |
| 400 return; | |
| 401 } | |
| 402 if (index > transient_entry_index_) { | |
| 403 // Removing the transient is goint to shift all entries by 1. | |
| 404 index--; | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 // If an interstitial page is showing, the previous renderer is blocked and | |
| 409 // cannot make new requests. | |
| 410 if (tab_contents_->interstitial_page()) { | |
| 411 if (index == GetCurrentEntryIndex() - 1) { | |
| 412 // Going back one entry is equivalent to hiding the interstitial. | |
| 413 tab_contents_->interstitial_page()->DontProceed(); | |
| 414 return; | |
| 415 } else { | |
| 416 // Unblock the renderer (and disable the interstitial) to allow this | |
| 417 // navigation to succeed. The interstitial will stay visible until the | |
| 418 // resulting DidNavigate. | |
| 419 tab_contents_->interstitial_page()->CancelForNavigation(); | |
| 420 } | |
| 421 } | |
| 422 | |
| 423 DiscardNonCommittedEntries(); | |
| 424 | |
| 425 pending_entry_index_ = index; | |
| 426 entries_[pending_entry_index_]->set_transition_type( | |
| 427 entries_[pending_entry_index_]->transition_type() | | |
| 428 PageTransition::FORWARD_BACK); | |
| 429 NavigateToPendingEntry(NO_RELOAD); | |
| 430 } | |
| 431 | |
| 432 void NavigationController::GoToOffset(int offset) { | |
| 433 int index = (transient_entry_index_ != -1) ? | |
| 434 transient_entry_index_ + offset : | |
| 435 last_committed_entry_index_ + offset; | |
| 436 if (index < 0 || index >= entry_count()) | |
| 437 return; | |
| 438 | |
| 439 GoToIndex(index); | |
| 440 } | |
| 441 | |
| 442 void NavigationController::RemoveEntryAtIndex(int index, | |
| 443 const GURL& default_url) { | |
| 444 int size = static_cast<int>(entries_.size()); | |
| 445 DCHECK(index < size); | |
| 446 | |
| 447 DiscardNonCommittedEntries(); | |
| 448 | |
| 449 entries_.erase(entries_.begin() + index); | |
| 450 | |
| 451 if (last_committed_entry_index_ == index) { | |
| 452 last_committed_entry_index_--; | |
| 453 // We removed the currently shown entry, so we have to load something else. | |
| 454 if (last_committed_entry_index_ != -1) { | |
| 455 pending_entry_index_ = last_committed_entry_index_; | |
| 456 NavigateToPendingEntry(NO_RELOAD); | |
| 457 } else { | |
| 458 // If there is nothing to show, show a default page. | |
| 459 LoadURL(default_url.is_empty() ? GURL("about:blank") : default_url, | |
| 460 GURL(), PageTransition::START_PAGE); | |
| 461 } | |
| 462 } else if (last_committed_entry_index_ > index) { | |
| 463 last_committed_entry_index_--; | |
| 464 } | |
| 465 } | |
| 466 | |
| 467 void NavigationController::UpdateVirtualURLToURL( | |
| 468 NavigationEntry* entry, const GURL& new_url) { | |
| 469 GURL new_virtual_url(new_url); | |
| 470 if (BrowserURLHandler::ReverseURLRewrite( | |
| 471 &new_virtual_url, entry->virtual_url(), profile_)) { | |
| 472 entry->set_virtual_url(new_virtual_url); | |
| 473 } | |
| 474 } | |
| 475 | |
| 476 void NavigationController::AddTransientEntry(NavigationEntry* entry) { | |
| 477 // Discard any current transient entry, we can only have one at a time. | |
| 478 int index = 0; | |
| 479 if (last_committed_entry_index_ != -1) | |
| 480 index = last_committed_entry_index_ + 1; | |
| 481 DiscardTransientEntry(); | |
| 482 entries_.insert(entries_.begin() + index, linked_ptr<NavigationEntry>(entry)); | |
| 483 transient_entry_index_ = index; | |
| 484 tab_contents_->NotifyNavigationStateChanged(kInvalidateAllButShelves); | |
| 485 } | |
| 486 | |
| 487 void NavigationController::LoadURL(const GURL& url, const GURL& referrer, | |
| 488 PageTransition::Type transition) { | |
| 489 // The user initiated a load, we don't need to reload anymore. | |
| 490 needs_reload_ = false; | |
| 491 | |
| 492 NavigationEntry* entry = CreateNavigationEntry(url, referrer, transition, | |
| 493 profile_); | |
| 494 | |
| 495 LoadEntry(entry); | |
| 496 } | |
| 497 | |
| 498 void NavigationController::DocumentLoadedInFrame() { | |
| 499 last_document_loaded_ = base::TimeTicks::Now(); | |
| 500 } | |
| 501 | |
| 502 bool NavigationController::RendererDidNavigate( | |
| 503 const ViewHostMsg_FrameNavigate_Params& params, | |
| 504 int extra_invalidate_flags, | |
| 505 LoadCommittedDetails* details) { | |
| 506 | |
| 507 // Save the previous state before we clobber it. | |
| 508 if (GetLastCommittedEntry()) { | |
| 509 details->previous_url = GetLastCommittedEntry()->url(); | |
| 510 details->previous_entry_index = last_committed_entry_index(); | |
| 511 } else { | |
| 512 details->previous_url = GURL(); | |
| 513 details->previous_entry_index = -1; | |
| 514 } | |
| 515 | |
| 516 // Assign the current site instance to any pending entry, so we can find it | |
| 517 // later by calling GetEntryIndexWithPageID. We only care about this if the | |
| 518 // pending entry is an existing navigation and not a new one (or else we | |
| 519 // wouldn't care about finding it with GetEntryIndexWithPageID). | |
| 520 // | |
| 521 // TODO(brettw) this seems slightly bogus as we don't really know if the | |
| 522 // pending entry is what this navigation is for. There is a similar TODO | |
| 523 // w.r.t. the pending entry in RendererDidNavigateToNewPage. | |
| 524 if (pending_entry_index_ >= 0) { | |
| 525 pending_entry_->set_site_instance(tab_contents_->GetSiteInstance()); | |
| 526 pending_entry_->set_restore_type(NavigationEntry::RESTORE_NONE); | |
| 527 } | |
| 528 | |
| 529 // is_in_page must be computed before the entry gets committed. | |
| 530 details->is_in_page = IsURLInPageNavigation(params.url); | |
| 531 | |
| 532 // Do navigation-type specific actions. These will make and commit an entry. | |
| 533 details->type = ClassifyNavigation(params); | |
| 534 | |
| 535 switch (details->type) { | |
| 536 case NavigationType::NEW_PAGE: | |
| 537 RendererDidNavigateToNewPage(params, &(details->did_replace_entry)); | |
| 538 break; | |
| 539 case NavigationType::EXISTING_PAGE: | |
| 540 RendererDidNavigateToExistingPage(params); | |
| 541 break; | |
| 542 case NavigationType::SAME_PAGE: | |
| 543 RendererDidNavigateToSamePage(params); | |
| 544 break; | |
| 545 case NavigationType::IN_PAGE: | |
| 546 RendererDidNavigateInPage(params, &(details->did_replace_entry)); | |
| 547 break; | |
| 548 case NavigationType::NEW_SUBFRAME: | |
| 549 RendererDidNavigateNewSubframe(params); | |
| 550 break; | |
| 551 case NavigationType::AUTO_SUBFRAME: | |
| 552 if (!RendererDidNavigateAutoSubframe(params)) | |
| 553 return false; | |
| 554 break; | |
| 555 case NavigationType::NAV_IGNORE: | |
| 556 // There is nothing we can do with this navigation, so we just return to | |
| 557 // the caller that nothing has happened. | |
| 558 return false; | |
| 559 default: | |
| 560 NOTREACHED(); | |
| 561 } | |
| 562 | |
| 563 // All committed entries should have nonempty content state so WebKit doesn't | |
| 564 // get confused when we go back to them (see the function for details). | |
| 565 SetContentStateIfEmpty(GetActiveEntry()); | |
| 566 | |
| 567 // WebKit doesn't set the "auto" transition on meta refreshes properly (bug | |
| 568 // 1051891) so we manually set it for redirects which we normally treat as | |
| 569 // "non-user-gestures" where we want to update stuff after navigations. | |
| 570 // | |
| 571 // Note that the redirect check also checks for a pending entry to | |
| 572 // differentiate real redirects from browser initiated navigations to a | |
| 573 // redirected entry. This happens when you hit back to go to a page that was | |
| 574 // the destination of a redirect, we don't want to treat it as a redirect | |
| 575 // even though that's what its transition will be. See bug 1117048. | |
| 576 // | |
| 577 // TODO(brettw) write a test for this complicated logic. | |
| 578 details->is_auto = (PageTransition::IsRedirect(params.transition) && | |
| 579 !pending_entry()) || | |
| 580 params.gesture == NavigationGestureAuto; | |
| 581 | |
| 582 // Now prep the rest of the details for the notification and broadcast. | |
| 583 details->entry = GetActiveEntry(); | |
| 584 details->is_main_frame = PageTransition::IsMainFrame(params.transition); | |
| 585 details->serialized_security_info = params.security_info; | |
| 586 details->is_content_filtered = params.is_content_filtered; | |
| 587 details->http_status_code = params.http_status_code; | |
| 588 NotifyNavigationEntryCommitted(details, extra_invalidate_flags); | |
| 589 | |
| 590 return true; | |
| 591 } | |
| 592 | |
| 593 NavigationType::Type NavigationController::ClassifyNavigation( | |
| 594 const ViewHostMsg_FrameNavigate_Params& params) const { | |
| 595 if (params.page_id == -1) { | |
| 596 // The renderer generates the page IDs, and so if it gives us the invalid | |
| 597 // page ID (-1) we know it didn't actually navigate. This happens in a few | |
| 598 // cases: | |
| 599 // | |
| 600 // - If a page makes a popup navigated to about blank, and then writes | |
| 601 // stuff like a subframe navigated to a real page. We'll get the commit | |
| 602 // for the subframe, but there won't be any commit for the outer page. | |
| 603 // | |
| 604 // - We were also getting these for failed loads (for example, bug 21849). | |
| 605 // The guess is that we get a "load commit" for the alternate error page, | |
| 606 // but that doesn't affect the page ID, so we get the "old" one, which | |
| 607 // could be invalid. This can also happen for a cross-site transition | |
| 608 // that causes us to swap processes. Then the error page load will be in | |
| 609 // a new process with no page IDs ever assigned (and hence a -1 value), | |
| 610 // yet the navigation controller still might have previous pages in its | |
| 611 // list. | |
| 612 // | |
| 613 // In these cases, there's nothing we can do with them, so ignore. | |
| 614 return NavigationType::NAV_IGNORE; | |
| 615 } | |
| 616 | |
| 617 if (params.page_id > tab_contents_->GetMaxPageID()) { | |
| 618 // Greater page IDs than we've ever seen before are new pages. We may or may | |
| 619 // not have a pending entry for the page, and this may or may not be the | |
| 620 // main frame. | |
| 621 if (PageTransition::IsMainFrame(params.transition)) | |
| 622 return NavigationType::NEW_PAGE; | |
| 623 | |
| 624 // When this is a new subframe navigation, we should have a committed page | |
| 625 // for which it's a suframe in. This may not be the case when an iframe is | |
| 626 // navigated on a popup navigated to about:blank (the iframe would be | |
| 627 // written into the popup by script on the main page). For these cases, | |
| 628 // there isn't any navigation stuff we can do, so just ignore it. | |
| 629 if (!GetLastCommittedEntry()) | |
| 630 return NavigationType::NAV_IGNORE; | |
| 631 | |
| 632 // Valid subframe navigation. | |
| 633 return NavigationType::NEW_SUBFRAME; | |
| 634 } | |
| 635 | |
| 636 // Now we know that the notification is for an existing page. Find that entry. | |
| 637 int existing_entry_index = GetEntryIndexWithPageID( | |
| 638 tab_contents_->GetSiteInstance(), | |
| 639 params.page_id); | |
| 640 if (existing_entry_index == -1) { | |
| 641 // The page was not found. It could have been pruned because of the limit on | |
| 642 // back/forward entries (not likely since we'll usually tell it to navigate | |
| 643 // to such entries). It could also mean that the renderer is smoking crack. | |
| 644 NOTREACHED(); | |
| 645 return NavigationType::NAV_IGNORE; | |
| 646 } | |
| 647 NavigationEntry* existing_entry = entries_[existing_entry_index].get(); | |
| 648 | |
| 649 if (!PageTransition::IsMainFrame(params.transition)) { | |
| 650 // All manual subframes would get new IDs and were handled above, so we | |
| 651 // know this is auto. Since the current page was found in the navigation | |
| 652 // entry list, we're guaranteed to have a last committed entry. | |
| 653 DCHECK(GetLastCommittedEntry()); | |
| 654 return NavigationType::AUTO_SUBFRAME; | |
| 655 } | |
| 656 | |
| 657 // Anything below here we know is a main frame navigation. | |
| 658 if (pending_entry_ && | |
| 659 existing_entry != pending_entry_ && | |
| 660 pending_entry_->page_id() == -1) { | |
| 661 // In this case, we have a pending entry for a URL but WebCore didn't do a | |
| 662 // new navigation. This happens when you press enter in the URL bar to | |
| 663 // reload. We will create a pending entry, but WebKit will convert it to | |
| 664 // a reload since it's the same page and not create a new entry for it | |
| 665 // (the user doesn't want to have a new back/forward entry when they do | |
| 666 // this). In this case, we want to just ignore the pending entry and go | |
| 667 // back to where we were (the "existing entry"). | |
| 668 return NavigationType::SAME_PAGE; | |
| 669 } | |
| 670 | |
| 671 // Any toplevel navigations with the same base (minus the reference fragment) | |
| 672 // are in-page navigations. We weeded out subframe navigations above. Most of | |
| 673 // the time this doesn't matter since WebKit doesn't tell us about subframe | |
| 674 // navigations that don't actually navigate, but it can happen when there is | |
| 675 // an encoding override (it always sends a navigation request). | |
| 676 if (AreURLsInPageNavigation(existing_entry->url(), params.url)) | |
| 677 return NavigationType::IN_PAGE; | |
| 678 | |
| 679 // Since we weeded out "new" navigations above, we know this is an existing | |
| 680 // (back/forward) navigation. | |
| 681 return NavigationType::EXISTING_PAGE; | |
| 682 } | |
| 683 | |
| 684 bool NavigationController::IsRedirect( | |
| 685 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 686 // For main frame transition, we judge by params.transition. | |
| 687 // Otherwise, by params.redirects. | |
| 688 if (PageTransition::IsMainFrame(params.transition)) { | |
| 689 return PageTransition::IsRedirect(params.transition); | |
| 690 } | |
| 691 return params.redirects.size() > 1; | |
| 692 } | |
| 693 | |
| 694 void NavigationController::CreateNavigationEntriesFromTabNavigations( | |
| 695 const std::vector<TabNavigation>& navigations, | |
| 696 std::vector<linked_ptr<NavigationEntry> >* entries) { | |
| 697 // Create a NavigationEntry for each of the navigations. | |
| 698 int page_id = 0; | |
| 699 for (std::vector<TabNavigation>::const_iterator i = | |
| 700 navigations.begin(); i != navigations.end(); ++i, ++page_id) { | |
| 701 linked_ptr<NavigationEntry> entry(i->ToNavigationEntry(page_id, profile_)); | |
| 702 entries->push_back(entry); | |
| 703 } | |
| 704 } | |
| 705 | |
| 706 void NavigationController::RendererDidNavigateToNewPage( | |
| 707 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) { | |
| 708 NavigationEntry* new_entry; | |
| 709 if (pending_entry_) { | |
| 710 // TODO(brettw) this assumes that the pending entry is appropriate for the | |
| 711 // new page that was just loaded. I don't think this is necessarily the | |
| 712 // case! We should have some more tracking to know for sure. This goes along | |
| 713 // with a similar TODO at the top of RendererDidNavigate where we blindly | |
| 714 // set the site instance on the pending entry. | |
| 715 new_entry = new NavigationEntry(*pending_entry_); | |
| 716 | |
| 717 // Don't use the page type from the pending entry. Some interstitial page | |
| 718 // may have set the type to interstitial. Once we commit, however, the page | |
| 719 // type must always be normal. | |
| 720 new_entry->set_page_type(NORMAL_PAGE); | |
| 721 } else { | |
| 722 new_entry = new NavigationEntry; | |
| 723 } | |
| 724 | |
| 725 new_entry->set_url(params.url); | |
| 726 if (new_entry->update_virtual_url_with_url()) | |
| 727 UpdateVirtualURLToURL(new_entry, params.url); | |
| 728 new_entry->set_referrer(params.referrer); | |
| 729 new_entry->set_page_id(params.page_id); | |
| 730 new_entry->set_transition_type(params.transition); | |
| 731 new_entry->set_site_instance(tab_contents_->GetSiteInstance()); | |
| 732 new_entry->set_has_post_data(params.is_post); | |
| 733 | |
| 734 InsertOrReplaceEntry(new_entry, *did_replace_entry); | |
| 735 } | |
| 736 | |
| 737 void NavigationController::RendererDidNavigateToExistingPage( | |
| 738 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 739 // We should only get here for main frame navigations. | |
| 740 DCHECK(PageTransition::IsMainFrame(params.transition)); | |
| 741 | |
| 742 // This is a back/forward navigation. The existing page for the ID is | |
| 743 // guaranteed to exist by ClassifyNavigation, and we just need to update it | |
| 744 // with new information from the renderer. | |
| 745 int entry_index = GetEntryIndexWithPageID(tab_contents_->GetSiteInstance(), | |
| 746 params.page_id); | |
| 747 DCHECK(entry_index >= 0 && | |
| 748 entry_index < static_cast<int>(entries_.size())); | |
| 749 NavigationEntry* entry = entries_[entry_index].get(); | |
| 750 | |
| 751 // The URL may have changed due to redirects. The site instance will normally | |
| 752 // be the same except during session restore, when no site instance will be | |
| 753 // assigned. | |
| 754 entry->set_url(params.url); | |
| 755 if (entry->update_virtual_url_with_url()) | |
| 756 UpdateVirtualURLToURL(entry, params.url); | |
| 757 DCHECK(entry->site_instance() == NULL || | |
| 758 entry->site_instance() == tab_contents_->GetSiteInstance()); | |
| 759 entry->set_site_instance(tab_contents_->GetSiteInstance()); | |
| 760 | |
| 761 entry->set_has_post_data(params.is_post); | |
| 762 | |
| 763 // The entry we found in the list might be pending if the user hit | |
| 764 // back/forward/reload. This load should commit it (since it's already in the | |
| 765 // list, we can just discard the pending pointer). | |
| 766 // | |
| 767 // Note that we need to use the "internal" version since we don't want to | |
| 768 // actually change any other state, just kill the pointer. | |
| 769 if (entry == pending_entry_) | |
| 770 DiscardNonCommittedEntriesInternal(); | |
| 771 | |
| 772 // If a transient entry was removed, the indices might have changed, so we | |
| 773 // have to query the entry index again. | |
| 774 last_committed_entry_index_ = | |
| 775 GetEntryIndexWithPageID(tab_contents_->GetSiteInstance(), params.page_id); | |
| 776 } | |
| 777 | |
| 778 void NavigationController::RendererDidNavigateToSamePage( | |
| 779 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 780 // This mode implies we have a pending entry that's the same as an existing | |
| 781 // entry for this page ID. This entry is guaranteed to exist by | |
| 782 // ClassifyNavigation. All we need to do is update the existing entry. | |
| 783 NavigationEntry* existing_entry = GetEntryWithPageID( | |
| 784 tab_contents_->GetSiteInstance(), | |
| 785 params.page_id); | |
| 786 | |
| 787 // We assign the entry's unique ID to be that of the new one. Since this is | |
| 788 // always the result of a user action, we want to dismiss infobars, etc. like | |
| 789 // a regular user-initiated navigation. | |
| 790 existing_entry->set_unique_id(pending_entry_->unique_id()); | |
| 791 | |
| 792 // The URL may have changed due to redirects. | |
| 793 if (existing_entry->update_virtual_url_with_url()) | |
| 794 UpdateVirtualURLToURL(existing_entry, params.url); | |
| 795 existing_entry->set_url(params.url); | |
| 796 | |
| 797 DiscardNonCommittedEntries(); | |
| 798 } | |
| 799 | |
| 800 void NavigationController::RendererDidNavigateInPage( | |
| 801 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) { | |
| 802 DCHECK(PageTransition::IsMainFrame(params.transition)) << | |
| 803 "WebKit should only tell us about in-page navs for the main frame."; | |
| 804 // We're guaranteed to have an entry for this one. | |
| 805 NavigationEntry* existing_entry = GetEntryWithPageID( | |
| 806 tab_contents_->GetSiteInstance(), | |
| 807 params.page_id); | |
| 808 | |
| 809 // Reference fragment navigation. We're guaranteed to have the last_committed | |
| 810 // entry and it will be the same page as the new navigation (minus the | |
| 811 // reference fragments, of course). | |
| 812 NavigationEntry* new_entry = new NavigationEntry(*existing_entry); | |
| 813 new_entry->set_page_id(params.page_id); | |
| 814 if (new_entry->update_virtual_url_with_url()) | |
| 815 UpdateVirtualURLToURL(new_entry, params.url); | |
| 816 new_entry->set_url(params.url); | |
| 817 | |
| 818 // This replaces the existing entry since the page ID didn't change. | |
| 819 *did_replace_entry = true; | |
| 820 InsertOrReplaceEntry(new_entry, true); | |
| 821 } | |
| 822 | |
| 823 void NavigationController::RendererDidNavigateNewSubframe( | |
| 824 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 825 if (PageTransition::StripQualifier(params.transition) == | |
| 826 PageTransition::AUTO_SUBFRAME) { | |
| 827 // This is not user-initiated. Ignore. | |
| 828 return; | |
| 829 } | |
| 830 | |
| 831 // Manual subframe navigations just get the current entry cloned so the user | |
| 832 // can go back or forward to it. The actual subframe information will be | |
| 833 // stored in the page state for each of those entries. This happens out of | |
| 834 // band with the actual navigations. | |
| 835 DCHECK(GetLastCommittedEntry()) << "ClassifyNavigation should guarantee " | |
| 836 << "that a last committed entry exists."; | |
| 837 NavigationEntry* new_entry = new NavigationEntry(*GetLastCommittedEntry()); | |
| 838 new_entry->set_page_id(params.page_id); | |
| 839 InsertOrReplaceEntry(new_entry, false); | |
| 840 } | |
| 841 | |
| 842 bool NavigationController::RendererDidNavigateAutoSubframe( | |
| 843 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 844 // We're guaranteed to have a previously committed entry, and we now need to | |
| 845 // handle navigation inside of a subframe in it without creating a new entry. | |
| 846 DCHECK(GetLastCommittedEntry()); | |
| 847 | |
| 848 // Handle the case where we're navigating back/forward to a previous subframe | |
| 849 // navigation entry. This is case "2." in NAV_AUTO_SUBFRAME comment in the | |
| 850 // header file. In case "1." this will be a NOP. | |
| 851 int entry_index = GetEntryIndexWithPageID( | |
| 852 tab_contents_->GetSiteInstance(), | |
| 853 params.page_id); | |
| 854 if (entry_index < 0 || | |
| 855 entry_index >= static_cast<int>(entries_.size())) { | |
| 856 NOTREACHED(); | |
| 857 return false; | |
| 858 } | |
| 859 | |
| 860 // Update the current navigation entry in case we're going back/forward. | |
| 861 if (entry_index != last_committed_entry_index_) { | |
| 862 last_committed_entry_index_ = entry_index; | |
| 863 return true; | |
| 864 } | |
| 865 return false; | |
| 866 } | |
| 867 | |
| 868 // TODO(brettw) I think this function is unnecessary. | |
| 869 void NavigationController::CommitPendingEntry() { | |
| 870 DiscardTransientEntry(); | |
| 871 | |
| 872 if (!pending_entry()) | |
| 873 return; // Nothing to do. | |
| 874 | |
| 875 // Need to save the previous URL for the notification. | |
| 876 LoadCommittedDetails details; | |
| 877 if (GetLastCommittedEntry()) { | |
| 878 details.previous_url = GetLastCommittedEntry()->url(); | |
| 879 details.previous_entry_index = last_committed_entry_index(); | |
| 880 } else { | |
| 881 details.previous_entry_index = -1; | |
| 882 } | |
| 883 | |
| 884 if (pending_entry_index_ >= 0) { | |
| 885 // This is a previous navigation (back/forward) that we're just now | |
| 886 // committing. Just mark it as committed. | |
| 887 details.type = NavigationType::EXISTING_PAGE; | |
| 888 int new_entry_index = pending_entry_index_; | |
| 889 DiscardNonCommittedEntriesInternal(); | |
| 890 | |
| 891 // Mark that entry as committed. | |
| 892 last_committed_entry_index_ = new_entry_index; | |
| 893 } else { | |
| 894 // This is a new navigation. It's easiest to just copy the entry and insert | |
| 895 // it new again, since InsertOrReplaceEntry expects to take ownership and | |
| 896 // also discard the pending entry. We also need to synthesize a page ID. We | |
| 897 // can only do this because this function will only be called by our custom | |
| 898 // TabContents types. For TabContents, the IDs are generated by the | |
| 899 // renderer, so we can't do this. | |
| 900 details.type = NavigationType::NEW_PAGE; | |
| 901 pending_entry_->set_page_id(tab_contents_->GetMaxPageID() + 1); | |
| 902 tab_contents_->UpdateMaxPageID(pending_entry_->page_id()); | |
| 903 InsertOrReplaceEntry(new NavigationEntry(*pending_entry_), false); | |
| 904 } | |
| 905 | |
| 906 // Broadcast the notification of the navigation. | |
| 907 details.entry = GetActiveEntry(); | |
| 908 details.is_auto = false; | |
| 909 details.is_in_page = AreURLsInPageNavigation(details.previous_url, | |
| 910 details.entry->url()); | |
| 911 details.is_main_frame = true; | |
| 912 NotifyNavigationEntryCommitted(&details, 0); | |
| 913 } | |
| 914 | |
| 915 int NavigationController::GetIndexOfEntry( | |
| 916 const NavigationEntry* entry) const { | |
| 917 const NavigationEntries::const_iterator i(std::find( | |
| 918 entries_.begin(), | |
| 919 entries_.end(), | |
| 920 entry)); | |
| 921 return (i == entries_.end()) ? -1 : static_cast<int>(i - entries_.begin()); | |
| 922 } | |
| 923 | |
| 924 bool NavigationController::IsURLInPageNavigation(const GURL& url) const { | |
| 925 NavigationEntry* last_committed = GetLastCommittedEntry(); | |
| 926 if (!last_committed) | |
| 927 return false; | |
| 928 return AreURLsInPageNavigation(last_committed->url(), url); | |
| 929 } | |
| 930 | |
| 931 void NavigationController::CopyStateFrom(const NavigationController& source) { | |
| 932 // Verify that we look new. | |
| 933 DCHECK(entry_count() == 0 && !pending_entry()); | |
| 934 | |
| 935 if (source.entry_count() == 0) | |
| 936 return; // Nothing new to do. | |
| 937 | |
| 938 needs_reload_ = true; | |
| 939 InsertEntriesFrom(source, source.entry_count()); | |
| 940 | |
| 941 session_storage_namespace_ = source.session_storage_namespace_->Clone(); | |
| 942 | |
| 943 FinishRestore(source.last_committed_entry_index_, false); | |
| 944 } | |
| 945 | |
| 946 void NavigationController::CopyStateFromAndPrune(NavigationController* source) { | |
| 947 // This code is intended for use when the last entry is the active entry. | |
| 948 DCHECK((transient_entry_index_ != -1 && | |
| 949 transient_entry_index_ == entry_count() - 1) || | |
| 950 (pending_entry_ && (pending_entry_index_ == -1 || | |
| 951 pending_entry_index_ == entry_count() - 1)) || | |
| 952 (!pending_entry_ && last_committed_entry_index_ == entry_count() - 1)); | |
| 953 | |
| 954 // Remove all the entries leaving the active entry. | |
| 955 PruneAllButActive(); | |
| 956 | |
| 957 // Insert the entries from source. Don't use source->GetCurrentEntryIndex as | |
| 958 // we don't want to copy over the transient entry. | |
| 959 int max_source_index = source->pending_entry_index_ != -1 ? | |
| 960 source->pending_entry_index_ : source->last_committed_entry_index_; | |
| 961 if (max_source_index == -1) | |
| 962 max_source_index = source->entry_count(); | |
| 963 else | |
| 964 max_source_index++; | |
| 965 InsertEntriesFrom(*source, max_source_index); | |
| 966 | |
| 967 // Adjust indices such that the last entry and pending are at the end now. | |
| 968 last_committed_entry_index_ = entry_count() - 1; | |
| 969 if (pending_entry_index_ != -1) | |
| 970 pending_entry_index_ = entry_count() - 1; | |
| 971 if (transient_entry_index_ != -1) { | |
| 972 // There's a transient entry. In this case we want the last committed to | |
| 973 // point to the previous entry. | |
| 974 transient_entry_index_ = entry_count() - 1; | |
| 975 if (last_committed_entry_index_ != -1) | |
| 976 last_committed_entry_index_--; | |
| 977 } | |
| 978 } | |
| 979 | |
| 980 void NavigationController::PruneAllButActive() { | |
| 981 if (transient_entry_index_ != -1) { | |
| 982 // There is a transient entry. Prune up to it. | |
| 983 DCHECK_EQ(entry_count() - 1, transient_entry_index_); | |
| 984 entries_.erase(entries_.begin(), entries_.begin() + transient_entry_index_); | |
| 985 transient_entry_index_ = 0; | |
| 986 last_committed_entry_index_ = -1; | |
| 987 pending_entry_index_ = -1; | |
| 988 } else if (!pending_entry_) { | |
| 989 // There's no pending entry. Leave the last entry (if there is one). | |
| 990 if (!entry_count()) | |
| 991 return; | |
| 992 | |
| 993 DCHECK(last_committed_entry_index_ >= 0); | |
| 994 entries_.erase(entries_.begin(), | |
| 995 entries_.begin() + last_committed_entry_index_); | |
| 996 entries_.erase(entries_.begin() + 1, entries_.end()); | |
| 997 last_committed_entry_index_ = 0; | |
| 998 } else if (pending_entry_index_ != -1) { | |
| 999 entries_.erase(entries_.begin(), entries_.begin() + pending_entry_index_); | |
| 1000 entries_.erase(entries_.begin() + 1, entries_.end()); | |
| 1001 pending_entry_index_ = 0; | |
| 1002 last_committed_entry_index_ = 0; | |
| 1003 } else { | |
| 1004 // There is a pending_entry, but it's not in entries_. | |
| 1005 pending_entry_index_ = -1; | |
| 1006 last_committed_entry_index_ = -1; | |
| 1007 entries_.clear(); | |
| 1008 } | |
| 1009 | |
| 1010 if (tab_contents_->interstitial_page()) { | |
| 1011 // Normally the interstitial page hides itself if the user doesn't proceeed. | |
| 1012 // This would result in showing a NavigationEntry we just removed. Set this | |
| 1013 // so the interstitial triggers a reload if the user doesn't proceed. | |
| 1014 tab_contents_->interstitial_page()->set_reload_on_dont_proceed(true); | |
| 1015 } | |
| 1016 } | |
| 1017 | |
| 1018 void NavigationController::DiscardNonCommittedEntries() { | |
| 1019 bool transient = transient_entry_index_ != -1; | |
| 1020 DiscardNonCommittedEntriesInternal(); | |
| 1021 | |
| 1022 // If there was a transient entry, invalidate everything so the new active | |
| 1023 // entry state is shown. | |
| 1024 if (transient) { | |
| 1025 tab_contents_->NotifyNavigationStateChanged(kInvalidateAllButShelves); | |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 void NavigationController::InsertOrReplaceEntry(NavigationEntry* entry, | |
| 1030 bool replace) { | |
| 1031 DCHECK(entry->transition_type() != PageTransition::AUTO_SUBFRAME); | |
| 1032 | |
| 1033 // Copy the pending entry's unique ID to the committed entry. | |
| 1034 // I don't know if pending_entry_index_ can be other than -1 here. | |
| 1035 const NavigationEntry* const pending_entry = (pending_entry_index_ == -1) ? | |
| 1036 pending_entry_ : entries_[pending_entry_index_].get(); | |
| 1037 if (pending_entry) | |
| 1038 entry->set_unique_id(pending_entry->unique_id()); | |
| 1039 | |
| 1040 DiscardNonCommittedEntriesInternal(); | |
| 1041 | |
| 1042 int current_size = static_cast<int>(entries_.size()); | |
| 1043 | |
| 1044 if (current_size > 0) { | |
| 1045 // Prune any entries which are in front of the current entry. | |
| 1046 // Also prune the current entry if we are to replace the current entry. | |
| 1047 int prune_up_to = replace ? last_committed_entry_index_ - 1 | |
| 1048 : last_committed_entry_index_; | |
| 1049 int num_pruned = 0; | |
| 1050 while (prune_up_to < (current_size - 1)) { | |
| 1051 num_pruned++; | |
| 1052 entries_.pop_back(); | |
| 1053 current_size--; | |
| 1054 } | |
| 1055 if (num_pruned > 0) // Only notify if we did prune something. | |
| 1056 NotifyPrunedEntries(this, false, num_pruned); | |
| 1057 } | |
| 1058 | |
| 1059 if (entries_.size() >= max_entry_count_) { | |
| 1060 RemoveEntryAtIndex(0, GURL()); | |
| 1061 NotifyPrunedEntries(this, true, 1); | |
| 1062 } | |
| 1063 | |
| 1064 entries_.push_back(linked_ptr<NavigationEntry>(entry)); | |
| 1065 last_committed_entry_index_ = static_cast<int>(entries_.size()) - 1; | |
| 1066 | |
| 1067 // This is a new page ID, so we need everybody to know about it. | |
| 1068 tab_contents_->UpdateMaxPageID(entry->page_id()); | |
| 1069 } | |
| 1070 | |
| 1071 void NavigationController::SetWindowID(const SessionID& id) { | |
| 1072 window_id_ = id; | |
| 1073 NotificationService::current()->Notify(NotificationType::TAB_PARENTED, | |
| 1074 Source<NavigationController>(this), | |
| 1075 NotificationService::NoDetails()); | |
| 1076 } | |
| 1077 | |
| 1078 void NavigationController::NavigateToPendingEntry(ReloadType reload_type) { | |
| 1079 needs_reload_ = false; | |
| 1080 | |
| 1081 // For session history navigations only the pending_entry_index_ is set. | |
| 1082 if (!pending_entry_) { | |
| 1083 DCHECK_NE(pending_entry_index_, -1); | |
| 1084 pending_entry_ = entries_[pending_entry_index_].get(); | |
| 1085 } | |
| 1086 | |
| 1087 if (!tab_contents_->NavigateToPendingEntry(reload_type)) | |
| 1088 DiscardNonCommittedEntries(); | |
| 1089 } | |
| 1090 | |
| 1091 void NavigationController::NotifyNavigationEntryCommitted( | |
| 1092 LoadCommittedDetails* details, | |
| 1093 int extra_invalidate_flags) { | |
| 1094 details->entry = GetActiveEntry(); | |
| 1095 NotificationDetails notification_details = | |
| 1096 Details<LoadCommittedDetails>(details); | |
| 1097 | |
| 1098 // We need to notify the ssl_manager_ before the tab_contents_ so the | |
| 1099 // location bar will have up-to-date information about the security style | |
| 1100 // when it wants to draw. See http://crbug.com/11157 | |
| 1101 ssl_manager_.DidCommitProvisionalLoad(notification_details); | |
| 1102 | |
| 1103 // TODO(pkasting): http://b/1113079 Probably these explicit notification paths | |
| 1104 // should be removed, and interested parties should just listen for the | |
| 1105 // notification below instead. | |
| 1106 tab_contents_->NotifyNavigationStateChanged( | |
| 1107 kInvalidateAllButShelves | extra_invalidate_flags); | |
| 1108 | |
| 1109 NotificationService::current()->Notify( | |
| 1110 NotificationType::NAV_ENTRY_COMMITTED, | |
| 1111 Source<NavigationController>(this), | |
| 1112 notification_details); | |
| 1113 } | |
| 1114 | |
| 1115 // static | |
| 1116 void NavigationController::DisablePromptOnRepost() { | |
| 1117 check_for_repost_ = false; | |
| 1118 } | |
| 1119 | |
| 1120 void NavigationController::SetActive(bool is_active) { | |
| 1121 if (is_active && needs_reload_) | |
| 1122 LoadIfNecessary(); | |
| 1123 } | |
| 1124 | |
| 1125 void NavigationController::LoadIfNecessary() { | |
| 1126 if (!needs_reload_) | |
| 1127 return; | |
| 1128 | |
| 1129 // Calling Reload() results in ignoring state, and not loading. | |
| 1130 // Explicitly use NavigateToPendingEntry so that the renderer uses the | |
| 1131 // cached state. | |
| 1132 pending_entry_index_ = last_committed_entry_index_; | |
| 1133 NavigateToPendingEntry(NO_RELOAD); | |
| 1134 } | |
| 1135 | |
| 1136 void NavigationController::NotifyEntryChanged(const NavigationEntry* entry, | |
| 1137 int index) { | |
| 1138 EntryChangedDetails det; | |
| 1139 det.changed_entry = entry; | |
| 1140 det.index = index; | |
| 1141 NotificationService::current()->Notify(NotificationType::NAV_ENTRY_CHANGED, | |
| 1142 Source<NavigationController>(this), | |
| 1143 Details<EntryChangedDetails>(&det)); | |
| 1144 } | |
| 1145 | |
| 1146 void NavigationController::FinishRestore(int selected_index, | |
| 1147 bool from_last_session) { | |
| 1148 DCHECK(selected_index >= 0 && selected_index < entry_count()); | |
| 1149 ConfigureEntriesForRestore(&entries_, from_last_session); | |
| 1150 | |
| 1151 set_max_restored_page_id(static_cast<int32>(entry_count())); | |
| 1152 | |
| 1153 last_committed_entry_index_ = selected_index; | |
| 1154 } | |
| 1155 | |
| 1156 void NavigationController::DiscardNonCommittedEntriesInternal() { | |
| 1157 if (pending_entry_index_ == -1) | |
| 1158 delete pending_entry_; | |
| 1159 pending_entry_ = NULL; | |
| 1160 pending_entry_index_ = -1; | |
| 1161 | |
| 1162 DiscardTransientEntry(); | |
| 1163 } | |
| 1164 | |
| 1165 void NavigationController::DiscardTransientEntry() { | |
| 1166 if (transient_entry_index_ == -1) | |
| 1167 return; | |
| 1168 entries_.erase(entries_.begin() + transient_entry_index_); | |
| 1169 if (last_committed_entry_index_ > transient_entry_index_) | |
| 1170 last_committed_entry_index_--; | |
| 1171 transient_entry_index_ = -1; | |
| 1172 } | |
| 1173 | |
| 1174 int NavigationController::GetEntryIndexWithPageID( | |
| 1175 SiteInstance* instance, int32 page_id) const { | |
| 1176 for (int i = static_cast<int>(entries_.size()) - 1; i >= 0; --i) { | |
| 1177 if ((entries_[i]->site_instance() == instance) && | |
| 1178 (entries_[i]->page_id() == page_id)) | |
| 1179 return i; | |
| 1180 } | |
| 1181 return -1; | |
| 1182 } | |
| 1183 | |
| 1184 NavigationEntry* NavigationController::GetTransientEntry() const { | |
| 1185 if (transient_entry_index_ == -1) | |
| 1186 return NULL; | |
| 1187 return entries_[transient_entry_index_].get(); | |
| 1188 } | |
| 1189 | |
| 1190 void NavigationController::InsertEntriesFrom( | |
| 1191 const NavigationController& source, | |
| 1192 int max_index) { | |
| 1193 DCHECK_LE(max_index, source.entry_count()); | |
| 1194 size_t insert_index = 0; | |
| 1195 for (int i = 0; i < max_index; i++) { | |
| 1196 // When cloning a tab, copy all entries except interstitial pages | |
| 1197 if (source.entries_[i].get()->page_type() != INTERSTITIAL_PAGE) { | |
| 1198 entries_.insert(entries_.begin() + insert_index++, | |
| 1199 linked_ptr<NavigationEntry>( | |
| 1200 new NavigationEntry(*source.entries_[i]))); | |
| 1201 } | |
| 1202 } | |
| 1203 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 6537015:
Start moving core pieces of Chrome multi-process code to src\content. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/