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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/browser/web_contents/navigation_controller_impl.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/debug/trace_event.h" | |
| 9 #include "base/logging.h" | |
| 10 #include "base/strings/string_number_conversions.h" // Temporary | |
| 11 #include "base/strings/string_util.h" | |
| 12 #include "base/strings/utf_string_conversions.h" | |
| 13 #include "base/time/time.h" | |
| 14 #include "content/browser/browser_url_handler_impl.h" | |
| 15 #include "content/browser/dom_storage/dom_storage_context_wrapper.h" | |
| 16 #include "content/browser/dom_storage/session_storage_namespace_impl.h" | |
| 17 #include "content/browser/renderer_host/render_view_host_impl.h" // Temporary | |
| 18 #include "content/browser/site_instance_impl.h" | |
| 19 #include "content/browser/web_contents/debug_urls.h" | |
| 20 #include "content/browser/web_contents/interstitial_page_impl.h" | |
| 21 #include "content/browser/web_contents/navigation_entry_impl.h" | |
| 22 #include "content/browser/web_contents/web_contents_screenshot_manager.h" | |
| 23 #include "content/common/view_messages.h" | |
| 24 #include "content/public/browser/browser_context.h" | |
| 25 #include "content/public/browser/content_browser_client.h" | |
| 26 #include "content/public/browser/invalidate_type.h" | |
| 27 #include "content/public/browser/navigation_details.h" | |
| 28 #include "content/public/browser/notification_service.h" | |
| 29 #include "content/public/browser/notification_types.h" | |
| 30 #include "content/public/browser/render_widget_host.h" | |
| 31 #include "content/public/browser/render_widget_host_view.h" | |
| 32 #include "content/public/browser/storage_partition.h" | |
| 33 #include "content/public/browser/user_metrics.h" | |
| 34 #include "content/public/browser/web_contents_delegate.h" | |
| 35 #include "content/public/common/content_client.h" | |
| 36 #include "content/public/common/content_constants.h" | |
| 37 #include "content/public/common/url_constants.h" | |
| 38 #include "net/base/escape.h" | |
| 39 #include "net/base/mime_util.h" | |
| 40 #include "net/base/net_util.h" | |
| 41 #include "skia/ext/platform_canvas.h" | |
| 42 | |
| 43 namespace content { | |
| 44 namespace { | |
| 45 | |
| 46 const int kInvalidateAll = 0xFFFFFFFF; | |
| 47 | |
| 48 // 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. | |
| 51 void NotifyPrunedEntries(NavigationControllerImpl* nav_controller, | |
| 52 bool from_front, | |
| 53 int count) { | |
| 54 PrunedDetails details; | |
| 55 details.from_front = from_front; | |
| 56 details.count = count; | |
| 57 NotificationService::current()->Notify( | |
| 58 NOTIFICATION_NAV_LIST_PRUNED, | |
| 59 Source<NavigationController>(nav_controller), | |
| 60 Details<PrunedDetails>(&details)); | |
| 61 } | |
| 62 | |
| 63 // Ensure the given NavigationEntry has a valid state, so that WebKit does not | |
| 64 // get confused if we navigate back to it. | |
| 65 // | |
| 66 // 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. | |
| 70 void SetPageStateIfEmpty(NavigationEntryImpl* entry) { | |
| 71 if (!entry->GetPageState().IsValid()) | |
| 72 entry->SetPageState(PageState::CreateFromURL(entry->GetURL())); | |
| 73 } | |
| 74 | |
| 75 NavigationEntryImpl::RestoreType ControllerRestoreTypeToEntryType( | |
| 76 NavigationController::RestoreType type) { | |
| 77 switch (type) { | |
| 78 case NavigationController::RESTORE_CURRENT_SESSION: | |
| 79 return NavigationEntryImpl::RESTORE_CURRENT_SESSION; | |
| 80 case NavigationController::RESTORE_LAST_SESSION_EXITED_CLEANLY: | |
| 81 return NavigationEntryImpl::RESTORE_LAST_SESSION_EXITED_CLEANLY; | |
| 82 case NavigationController::RESTORE_LAST_SESSION_CRASHED: | |
| 83 return NavigationEntryImpl::RESTORE_LAST_SESSION_CRASHED; | |
| 84 } | |
| 85 NOTREACHED(); | |
| 86 return NavigationEntryImpl::RESTORE_CURRENT_SESSION; | |
| 87 } | |
| 88 | |
| 89 // Configure all the NavigationEntries in entries for restore. This resets | |
| 90 // the transition type to reload and makes sure the content state isn't empty. | |
| 91 void ConfigureEntriesForRestore( | |
| 92 std::vector<linked_ptr<NavigationEntryImpl> >* entries, | |
| 93 NavigationController::RestoreType type) { | |
| 94 for (size_t i = 0; i < entries->size(); ++i) { | |
| 95 // Use a transition type of reload so that we don't incorrectly increase | |
| 96 // the typed count. | |
| 97 (*entries)[i]->SetTransitionType(PAGE_TRANSITION_RELOAD); | |
| 98 (*entries)[i]->set_restore_type(ControllerRestoreTypeToEntryType(type)); | |
| 99 // NOTE(darin): This code is only needed for backwards compat. | |
| 100 SetPageStateIfEmpty((*entries)[i].get()); | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 // See NavigationController::IsURLInPageNavigation for how this works and why. | |
| 105 bool AreURLsInPageNavigation(const GURL& existing_url, | |
| 106 const GURL& new_url, | |
| 107 bool renderer_says_in_page, | |
| 108 NavigationType navigation_type) { | |
| 109 if (existing_url == new_url) | |
| 110 return renderer_says_in_page; | |
| 111 | |
| 112 if (!new_url.has_ref()) { | |
| 113 // When going back from the ref URL to the non ref one the navigation type | |
| 114 // is IN_PAGE. | |
| 115 return navigation_type == NAVIGATION_TYPE_IN_PAGE; | |
| 116 } | |
| 117 | |
| 118 url_canon::Replacements<char> replacements; | |
| 119 replacements.ClearRef(); | |
| 120 return existing_url.ReplaceComponents(replacements) == | |
| 121 new_url.ReplaceComponents(replacements); | |
| 122 } | |
| 123 | |
| 124 // Determines whether or not we should be carrying over a user agent override | |
| 125 // between two NavigationEntries. | |
| 126 bool ShouldKeepOverride(const NavigationEntry* last_entry) { | |
| 127 return last_entry && last_entry->GetIsOverridingUserAgent(); | |
| 128 } | |
| 129 | |
| 130 } // namespace | |
| 131 | |
| 132 // NavigationControllerImpl ---------------------------------------------------- | |
| 133 | |
| 134 const size_t kMaxEntryCountForTestingNotSet = -1; | |
| 135 | |
| 136 // static | |
| 137 size_t NavigationControllerImpl::max_entry_count_for_testing_ = | |
| 138 kMaxEntryCountForTestingNotSet; | |
| 139 | |
| 140 // Should Reload check for post data? The default is true, but is set to false | |
| 141 // when testing. | |
| 142 static bool g_check_for_repost = true; | |
| 143 | |
| 144 // static | |
| 145 NavigationEntry* NavigationController::CreateNavigationEntry( | |
| 146 const GURL& url, | |
| 147 const Referrer& referrer, | |
| 148 PageTransition transition, | |
| 149 bool is_renderer_initiated, | |
| 150 const std::string& extra_headers, | |
| 151 BrowserContext* browser_context) { | |
| 152 // Allow the browser URL handler to rewrite the URL. This will, for example, | |
| 153 // remove "view-source:" from the beginning of the URL to get the URL that | |
| 154 // will actually be loaded. This real URL won't be shown to the user, just | |
| 155 // used internally. | |
| 156 GURL loaded_url(url); | |
| 157 bool reverse_on_redirect = false; | |
| 158 BrowserURLHandlerImpl::GetInstance()->RewriteURLIfNecessary( | |
| 159 &loaded_url, browser_context, &reverse_on_redirect); | |
| 160 | |
| 161 NavigationEntryImpl* entry = new NavigationEntryImpl( | |
| 162 NULL, // The site instance for tabs is sent on navigation | |
| 163 // (WebContents::GetSiteInstance). | |
| 164 -1, | |
| 165 loaded_url, | |
| 166 referrer, | |
| 167 string16(), | |
| 168 transition, | |
| 169 is_renderer_initiated); | |
| 170 entry->SetVirtualURL(url); | |
| 171 entry->set_user_typed_url(url); | |
| 172 entry->set_update_virtual_url_with_url(reverse_on_redirect); | |
| 173 entry->set_extra_headers(extra_headers); | |
| 174 return entry; | |
| 175 } | |
| 176 | |
| 177 // static | |
| 178 void NavigationController::DisablePromptOnRepost() { | |
| 179 g_check_for_repost = false; | |
| 180 } | |
| 181 | |
| 182 base::Time NavigationControllerImpl::TimeSmoother::GetSmoothedTime( | |
| 183 base::Time t) { | |
| 184 // If |t| is between the water marks, we're in a run of duplicates | |
| 185 // or just getting out of it, so increase the high-water mark to get | |
| 186 // a time that probably hasn't been used before and return it. | |
| 187 if (low_water_mark_ <= t && t <= high_water_mark_) { | |
| 188 high_water_mark_ += base::TimeDelta::FromMicroseconds(1); | |
| 189 return high_water_mark_; | |
| 190 } | |
| 191 | |
| 192 // Otherwise, we're clear of the last duplicate run, so reset the | |
| 193 // water marks. | |
| 194 low_water_mark_ = high_water_mark_ = t; | |
| 195 return t; | |
| 196 } | |
| 197 | |
| 198 NavigationControllerImpl::NavigationControllerImpl( | |
| 199 NavigationControllerDelegate* delegate, | |
| 200 BrowserContext* browser_context) | |
| 201 : browser_context_(browser_context), | |
| 202 pending_entry_(NULL), | |
| 203 last_committed_entry_index_(-1), | |
| 204 pending_entry_index_(-1), | |
| 205 transient_entry_index_(-1), | |
| 206 delegate_(delegate), | |
| 207 max_restored_page_id_(-1), | |
| 208 ssl_manager_(this), | |
| 209 needs_reload_(false), | |
| 210 is_initial_navigation_(true), | |
| 211 pending_reload_(NO_RELOAD), | |
| 212 get_timestamp_callback_(base::Bind(&base::Time::Now)), | |
| 213 screenshot_manager_(new WebContentsScreenshotManager(this)) { | |
| 214 DCHECK(browser_context_); | |
| 215 } | |
| 216 | |
| 217 NavigationControllerImpl::~NavigationControllerImpl() { | |
| 218 DiscardNonCommittedEntriesInternal(); | |
| 219 } | |
| 220 | |
| 221 WebContents* NavigationControllerImpl::GetWebContents() const { | |
| 222 return delegate_->GetWebContents(); | |
| 223 } | |
| 224 | |
| 225 BrowserContext* NavigationControllerImpl::GetBrowserContext() const { | |
| 226 return browser_context_; | |
| 227 } | |
| 228 | |
| 229 void NavigationControllerImpl::SetBrowserContext( | |
| 230 BrowserContext* browser_context) { | |
| 231 browser_context_ = browser_context; | |
| 232 } | |
| 233 | |
| 234 void NavigationControllerImpl::Restore( | |
| 235 int selected_navigation, | |
| 236 RestoreType type, | |
| 237 std::vector<NavigationEntry*>* entries) { | |
| 238 // Verify that this controller is unused and that the input is valid. | |
| 239 DCHECK(GetEntryCount() == 0 && !GetPendingEntry()); | |
| 240 DCHECK(selected_navigation >= 0 && | |
| 241 selected_navigation < static_cast<int>(entries->size())); | |
| 242 | |
| 243 needs_reload_ = true; | |
| 244 for (size_t i = 0; i < entries->size(); ++i) { | |
| 245 NavigationEntryImpl* entry = | |
| 246 NavigationEntryImpl::FromNavigationEntry((*entries)[i]); | |
| 247 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry)); | |
| 248 } | |
| 249 entries->clear(); | |
| 250 | |
| 251 // And finish the restore. | |
| 252 FinishRestore(selected_navigation, type); | |
| 253 } | |
| 254 | |
| 255 void NavigationControllerImpl::Reload(bool check_for_repost) { | |
| 256 ReloadInternal(check_for_repost, RELOAD); | |
| 257 } | |
| 258 void NavigationControllerImpl::ReloadIgnoringCache(bool check_for_repost) { | |
| 259 ReloadInternal(check_for_repost, RELOAD_IGNORING_CACHE); | |
| 260 } | |
| 261 void NavigationControllerImpl::ReloadOriginalRequestURL(bool check_for_repost) { | |
| 262 ReloadInternal(check_for_repost, RELOAD_ORIGINAL_REQUEST_URL); | |
| 263 } | |
| 264 | |
| 265 void NavigationControllerImpl::ReloadInternal(bool check_for_repost, | |
| 266 ReloadType reload_type) { | |
| 267 if (transient_entry_index_ != -1) { | |
| 268 // If an interstitial is showing, treat a reload as a navigation to the | |
| 269 // transient entry's URL. | |
| 270 NavigationEntryImpl* transient_entry = | |
| 271 NavigationEntryImpl::FromNavigationEntry(GetTransientEntry()); | |
| 272 if (!transient_entry) | |
| 273 return; | |
| 274 LoadURL(transient_entry->GetURL(), | |
| 275 Referrer(), | |
| 276 PAGE_TRANSITION_RELOAD, | |
| 277 transient_entry->extra_headers()); | |
| 278 return; | |
| 279 } | |
| 280 | |
| 281 NavigationEntryImpl* entry = NULL; | |
| 282 int current_index = -1; | |
| 283 | |
| 284 // If we are reloading the initial navigation, just use the current | |
| 285 // pending entry. Otherwise look up the current entry. | |
| 286 if (IsInitialNavigation() && pending_entry_) { | |
| 287 entry = pending_entry_; | |
| 288 // The pending entry might be in entries_ (e.g., after a Clone), so we | |
| 289 // should also update the current_index. | |
| 290 current_index = pending_entry_index_; | |
| 291 } else { | |
| 292 DiscardNonCommittedEntriesInternal(); | |
| 293 current_index = GetCurrentEntryIndex(); | |
| 294 if (current_index != -1) { | |
| 295 entry = NavigationEntryImpl::FromNavigationEntry( | |
| 296 GetEntryAtIndex(current_index)); | |
| 297 } | |
| 298 } | |
| 299 | |
| 300 // If we are no where, then we can't reload. TODO(darin): We should add a | |
| 301 // CanReload method. | |
| 302 if (!entry) | |
| 303 return; | |
| 304 | |
| 305 if (reload_type == NavigationControllerImpl::RELOAD_ORIGINAL_REQUEST_URL && | |
| 306 entry->GetOriginalRequestURL().is_valid() && !entry->GetHasPostData()) { | |
| 307 // We may have been redirected when navigating to the current URL. | |
| 308 // Use the URL the user originally intended to visit, if it's valid and if a | |
| 309 // POST wasn't involved; the latter case avoids issues with sending data to | |
| 310 // the wrong page. | |
| 311 entry->SetURL(entry->GetOriginalRequestURL()); | |
| 312 } | |
| 313 | |
| 314 if (g_check_for_repost && check_for_repost && | |
| 315 entry->GetHasPostData()) { | |
| 316 // The user is asking to reload a page with POST data. Prompt to make sure | |
| 317 // they really want to do this. If they do, the dialog will call us back | |
| 318 // with check_for_repost = false. | |
| 319 delegate_->NotifyBeforeFormRepostWarningShow(); | |
| 320 | |
| 321 pending_reload_ = reload_type; | |
| 322 delegate_->ActivateAndShowRepostFormWarningDialog(); | |
| 323 } else { | |
| 324 if (!IsInitialNavigation()) | |
| 325 DiscardNonCommittedEntriesInternal(); | |
| 326 | |
| 327 // If we are reloading an entry that no longer belongs to the current | |
| 328 // site instance (for example, refreshing a page for just installed app), | |
| 329 // the reload must happen in a new process. | |
| 330 // The new entry must have a new page_id and site instance, so it behaves | |
| 331 // as new navigation (which happens to clear forward history). | |
| 332 // Tabs that are discarded due to low memory conditions may not have a site | |
| 333 // instance, and should not be treated as a cross-site reload. | |
| 334 SiteInstanceImpl* site_instance = entry->site_instance(); | |
| 335 if (site_instance && | |
| 336 site_instance->HasWrongProcessForURL(entry->GetURL())) { | |
| 337 // Create a navigation entry that resembles the current one, but do not | |
| 338 // copy page id, site instance, content state, or timestamp. | |
| 339 NavigationEntryImpl* nav_entry = NavigationEntryImpl::FromNavigationEntry( | |
| 340 CreateNavigationEntry( | |
| 341 entry->GetURL(), entry->GetReferrer(), entry->GetTransitionType(), | |
| 342 false, entry->extra_headers(), browser_context_)); | |
| 343 | |
| 344 // Mark the reload type as NO_RELOAD, so navigation will not be considered | |
| 345 // a reload in the renderer. | |
| 346 reload_type = NavigationController::NO_RELOAD; | |
| 347 | |
| 348 nav_entry->set_should_replace_entry(true); | |
| 349 pending_entry_ = nav_entry; | |
| 350 } else { | |
| 351 pending_entry_ = entry; | |
| 352 pending_entry_index_ = current_index; | |
| 353 | |
| 354 // The title of the page being reloaded might have been removed in the | |
| 355 // meanwhile, so we need to revert to the default title upon reload and | |
| 356 // invalidate the previously cached title (SetTitle will do both). | |
| 357 // See Chromium issue 96041. | |
| 358 pending_entry_->SetTitle(string16()); | |
| 359 | |
| 360 pending_entry_->SetTransitionType(PAGE_TRANSITION_RELOAD); | |
| 361 } | |
| 362 | |
| 363 NavigateToPendingEntry(reload_type); | |
| 364 } | |
| 365 } | |
| 366 | |
| 367 void NavigationControllerImpl::CancelPendingReload() { | |
| 368 DCHECK(pending_reload_ != NO_RELOAD); | |
| 369 pending_reload_ = NO_RELOAD; | |
| 370 } | |
| 371 | |
| 372 void NavigationControllerImpl::ContinuePendingReload() { | |
| 373 if (pending_reload_ == NO_RELOAD) { | |
| 374 NOTREACHED(); | |
| 375 } else { | |
| 376 ReloadInternal(false, pending_reload_); | |
| 377 pending_reload_ = NO_RELOAD; | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 bool NavigationControllerImpl::IsInitialNavigation() const { | |
| 382 return is_initial_navigation_; | |
| 383 } | |
| 384 | |
| 385 NavigationEntryImpl* NavigationControllerImpl::GetEntryWithPageID( | |
| 386 SiteInstance* instance, int32 page_id) const { | |
| 387 int index = GetEntryIndexWithPageID(instance, page_id); | |
| 388 return (index != -1) ? entries_[index].get() : NULL; | |
| 389 } | |
| 390 | |
| 391 void NavigationControllerImpl::LoadEntry(NavigationEntryImpl* entry) { | |
| 392 // When navigating to a new page, we don't know for sure if we will actually | |
| 393 // end up leaving the current page. The new page load could for example | |
| 394 // result in a download or a 'no content' response (e.g., a mailto: URL). | |
| 395 SetPendingEntry(entry); | |
| 396 NavigateToPendingEntry(NO_RELOAD); | |
| 397 } | |
| 398 | |
| 399 void NavigationControllerImpl::SetPendingEntry(NavigationEntryImpl* entry) { | |
| 400 DiscardNonCommittedEntriesInternal(); | |
| 401 pending_entry_ = entry; | |
| 402 NotificationService::current()->Notify( | |
| 403 NOTIFICATION_NAV_ENTRY_PENDING, | |
| 404 Source<NavigationController>(this), | |
| 405 Details<NavigationEntry>(entry)); | |
| 406 } | |
| 407 | |
| 408 NavigationEntry* NavigationControllerImpl::GetActiveEntry() const { | |
| 409 if (transient_entry_index_ != -1) | |
| 410 return entries_[transient_entry_index_].get(); | |
| 411 if (pending_entry_) | |
| 412 return pending_entry_; | |
| 413 return GetLastCommittedEntry(); | |
| 414 } | |
| 415 | |
| 416 NavigationEntry* NavigationControllerImpl::GetVisibleEntry() const { | |
| 417 if (transient_entry_index_ != -1) | |
| 418 return entries_[transient_entry_index_].get(); | |
| 419 // The pending entry is safe to return for new (non-history), browser- | |
| 420 // initiated navigations. Most renderer-initiated navigations should not | |
| 421 // show the pending entry, to prevent URL spoof attacks. | |
| 422 // | |
| 423 // We make an exception for renderer-initiated navigations in new tabs, as | |
| 424 // long as no other page has tried to access the initial empty document in | |
| 425 // the new tab. If another page modifies this blank page, a URL spoof is | |
| 426 // possible, so we must stop showing the pending entry. | |
| 427 RenderViewHostImpl* rvh = static_cast<RenderViewHostImpl*>( | |
| 428 delegate_->GetRenderViewHost()); | |
| 429 bool safe_to_show_pending = | |
| 430 pending_entry_ && | |
| 431 // Require a new navigation. | |
| 432 pending_entry_->GetPageID() == -1 && | |
| 433 // Require either browser-initiated or an unmodified new tab. | |
| 434 (!pending_entry_->is_renderer_initiated() || | |
| 435 (IsInitialNavigation() && | |
| 436 !GetLastCommittedEntry() && | |
| 437 !rvh->has_accessed_initial_document())); | |
| 438 | |
| 439 // Also allow showing the pending entry for history navigations in a new tab, | |
| 440 // such as Ctrl+Back. In this case, no existing page is visible and no one | |
| 441 // can script the new tab before it commits. | |
| 442 if (!safe_to_show_pending && | |
| 443 pending_entry_ && | |
| 444 pending_entry_->GetPageID() != -1 && | |
| 445 IsInitialNavigation() && | |
| 446 !pending_entry_->is_renderer_initiated()) | |
| 447 safe_to_show_pending = true; | |
| 448 | |
| 449 if (safe_to_show_pending) | |
| 450 return pending_entry_; | |
| 451 return GetLastCommittedEntry(); | |
| 452 } | |
| 453 | |
| 454 int NavigationControllerImpl::GetCurrentEntryIndex() const { | |
| 455 if (transient_entry_index_ != -1) | |
| 456 return transient_entry_index_; | |
| 457 if (pending_entry_index_ != -1) | |
| 458 return pending_entry_index_; | |
| 459 return last_committed_entry_index_; | |
| 460 } | |
| 461 | |
| 462 NavigationEntry* NavigationControllerImpl::GetLastCommittedEntry() const { | |
| 463 if (last_committed_entry_index_ == -1) | |
| 464 return NULL; | |
| 465 return entries_[last_committed_entry_index_].get(); | |
| 466 } | |
| 467 | |
| 468 bool NavigationControllerImpl::CanViewSource() const { | |
| 469 const std::string& mime_type = delegate_->GetContentsMimeType(); | |
| 470 bool is_viewable_mime_type = net::IsSupportedNonImageMimeType(mime_type) && | |
| 471 !net::IsSupportedMediaMimeType(mime_type); | |
| 472 NavigationEntry* visible_entry = GetVisibleEntry(); | |
| 473 return visible_entry && !visible_entry->IsViewSourceMode() && | |
| 474 is_viewable_mime_type && !delegate_->GetInterstitialPage(); | |
| 475 } | |
| 476 | |
| 477 int NavigationControllerImpl::GetLastCommittedEntryIndex() const { | |
| 478 return last_committed_entry_index_; | |
| 479 } | |
| 480 | |
| 481 int NavigationControllerImpl::GetEntryCount() const { | |
| 482 DCHECK(entries_.size() <= max_entry_count()); | |
| 483 return static_cast<int>(entries_.size()); | |
| 484 } | |
| 485 | |
| 486 NavigationEntry* NavigationControllerImpl::GetEntryAtIndex( | |
| 487 int index) const { | |
| 488 return entries_.at(index).get(); | |
| 489 } | |
| 490 | |
| 491 NavigationEntry* NavigationControllerImpl::GetEntryAtOffset( | |
| 492 int offset) const { | |
| 493 int index = GetIndexForOffset(offset); | |
| 494 if (index < 0 || index >= GetEntryCount()) | |
| 495 return NULL; | |
| 496 | |
| 497 return entries_[index].get(); | |
| 498 } | |
| 499 | |
| 500 int NavigationControllerImpl::GetIndexForOffset(int offset) const { | |
| 501 return GetCurrentEntryIndex() + offset; | |
| 502 } | |
| 503 | |
| 504 void NavigationControllerImpl::TakeScreenshot() { | |
| 505 screenshot_manager_->TakeScreenshot(); | |
| 506 } | |
| 507 | |
| 508 void NavigationControllerImpl::SetScreenshotManager( | |
| 509 WebContentsScreenshotManager* manager) { | |
| 510 screenshot_manager_.reset(manager ? manager : | |
| 511 new WebContentsScreenshotManager(this)); | |
| 512 } | |
| 513 | |
| 514 bool NavigationControllerImpl::CanGoBack() const { | |
| 515 return entries_.size() > 1 && GetCurrentEntryIndex() > 0; | |
| 516 } | |
| 517 | |
| 518 bool NavigationControllerImpl::CanGoForward() const { | |
| 519 int index = GetCurrentEntryIndex(); | |
| 520 return index >= 0 && index < (static_cast<int>(entries_.size()) - 1); | |
| 521 } | |
| 522 | |
| 523 bool NavigationControllerImpl::CanGoToOffset(int offset) const { | |
| 524 int index = GetIndexForOffset(offset); | |
| 525 return index >= 0 && index < GetEntryCount(); | |
| 526 } | |
| 527 | |
| 528 void NavigationControllerImpl::GoBack() { | |
| 529 if (!CanGoBack()) { | |
| 530 NOTREACHED(); | |
| 531 return; | |
| 532 } | |
| 533 | |
| 534 // Base the navigation on where we are now... | |
| 535 int current_index = GetCurrentEntryIndex(); | |
| 536 | |
| 537 DiscardNonCommittedEntries(); | |
| 538 | |
| 539 pending_entry_index_ = current_index - 1; | |
| 540 entries_[pending_entry_index_]->SetTransitionType( | |
| 541 PageTransitionFromInt( | |
| 542 entries_[pending_entry_index_]->GetTransitionType() | | |
| 543 PAGE_TRANSITION_FORWARD_BACK)); | |
| 544 NavigateToPendingEntry(NO_RELOAD); | |
| 545 } | |
| 546 | |
| 547 void NavigationControllerImpl::GoForward() { | |
| 548 if (!CanGoForward()) { | |
| 549 NOTREACHED(); | |
| 550 return; | |
| 551 } | |
| 552 | |
| 553 bool transient = (transient_entry_index_ != -1); | |
| 554 | |
| 555 // Base the navigation on where we are now... | |
| 556 int current_index = GetCurrentEntryIndex(); | |
| 557 | |
| 558 DiscardNonCommittedEntries(); | |
| 559 | |
| 560 pending_entry_index_ = current_index; | |
| 561 // If there was a transient entry, we removed it making the current index | |
| 562 // the next page. | |
| 563 if (!transient) | |
| 564 pending_entry_index_++; | |
| 565 | |
| 566 entries_[pending_entry_index_]->SetTransitionType( | |
| 567 PageTransitionFromInt( | |
| 568 entries_[pending_entry_index_]->GetTransitionType() | | |
| 569 PAGE_TRANSITION_FORWARD_BACK)); | |
| 570 NavigateToPendingEntry(NO_RELOAD); | |
| 571 } | |
| 572 | |
| 573 void NavigationControllerImpl::GoToIndex(int index) { | |
| 574 if (index < 0 || index >= static_cast<int>(entries_.size())) { | |
| 575 NOTREACHED(); | |
| 576 return; | |
| 577 } | |
| 578 | |
| 579 if (transient_entry_index_ != -1) { | |
| 580 if (index == transient_entry_index_) { | |
| 581 // Nothing to do when navigating to the transient. | |
| 582 return; | |
| 583 } | |
| 584 if (index > transient_entry_index_) { | |
| 585 // Removing the transient is goint to shift all entries by 1. | |
| 586 index--; | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 DiscardNonCommittedEntries(); | |
| 591 | |
| 592 pending_entry_index_ = index; | |
| 593 entries_[pending_entry_index_]->SetTransitionType( | |
| 594 PageTransitionFromInt( | |
| 595 entries_[pending_entry_index_]->GetTransitionType() | | |
| 596 PAGE_TRANSITION_FORWARD_BACK)); | |
| 597 NavigateToPendingEntry(NO_RELOAD); | |
| 598 } | |
| 599 | |
| 600 void NavigationControllerImpl::GoToOffset(int offset) { | |
| 601 if (!CanGoToOffset(offset)) | |
| 602 return; | |
| 603 | |
| 604 GoToIndex(GetIndexForOffset(offset)); | |
| 605 } | |
| 606 | |
| 607 bool NavigationControllerImpl::RemoveEntryAtIndex(int index) { | |
| 608 if (index == last_committed_entry_index_ || | |
| 609 index == pending_entry_index_) | |
| 610 return false; | |
| 611 | |
| 612 RemoveEntryAtIndexInternal(index); | |
| 613 return true; | |
| 614 } | |
| 615 | |
| 616 void NavigationControllerImpl::UpdateVirtualURLToURL( | |
| 617 NavigationEntryImpl* entry, const GURL& new_url) { | |
| 618 GURL new_virtual_url(new_url); | |
| 619 if (BrowserURLHandlerImpl::GetInstance()->ReverseURLRewrite( | |
| 620 &new_virtual_url, entry->GetVirtualURL(), browser_context_)) { | |
| 621 entry->SetVirtualURL(new_virtual_url); | |
| 622 } | |
| 623 } | |
| 624 | |
| 625 void NavigationControllerImpl::LoadURL( | |
| 626 const GURL& url, | |
| 627 const Referrer& referrer, | |
| 628 PageTransition transition, | |
| 629 const std::string& extra_headers) { | |
| 630 LoadURLParams params(url); | |
| 631 params.referrer = referrer; | |
| 632 params.transition_type = transition; | |
| 633 params.extra_headers = extra_headers; | |
| 634 LoadURLWithParams(params); | |
| 635 } | |
| 636 | |
| 637 void NavigationControllerImpl::LoadURLWithParams(const LoadURLParams& params) { | |
| 638 TRACE_EVENT0("browser", "NavigationControllerImpl::LoadURLWithParams"); | |
| 639 if (HandleDebugURL(params.url, params.transition_type)) | |
| 640 return; | |
| 641 | |
| 642 // Checks based on params.load_type. | |
| 643 switch (params.load_type) { | |
| 644 case LOAD_TYPE_DEFAULT: | |
| 645 break; | |
| 646 case LOAD_TYPE_BROWSER_INITIATED_HTTP_POST: | |
| 647 if (!params.url.SchemeIs(kHttpScheme) && | |
| 648 !params.url.SchemeIs(kHttpsScheme)) { | |
| 649 NOTREACHED() << "Http post load must use http(s) scheme."; | |
| 650 return; | |
| 651 } | |
| 652 break; | |
| 653 case LOAD_TYPE_DATA: | |
| 654 if (!params.url.SchemeIs(chrome::kDataScheme)) { | |
| 655 NOTREACHED() << "Data load must use data scheme."; | |
| 656 return; | |
| 657 } | |
| 658 break; | |
| 659 default: | |
| 660 NOTREACHED(); | |
| 661 break; | |
| 662 }; | |
| 663 | |
| 664 // The user initiated a load, we don't need to reload anymore. | |
| 665 needs_reload_ = false; | |
| 666 | |
| 667 bool override = false; | |
| 668 switch (params.override_user_agent) { | |
| 669 case UA_OVERRIDE_INHERIT: | |
| 670 override = ShouldKeepOverride(GetLastCommittedEntry()); | |
| 671 break; | |
| 672 case UA_OVERRIDE_TRUE: | |
| 673 override = true; | |
| 674 break; | |
| 675 case UA_OVERRIDE_FALSE: | |
| 676 override = false; | |
| 677 break; | |
| 678 default: | |
| 679 NOTREACHED(); | |
| 680 break; | |
| 681 } | |
| 682 | |
| 683 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry( | |
| 684 CreateNavigationEntry( | |
| 685 params.url, | |
| 686 params.referrer, | |
| 687 params.transition_type, | |
| 688 params.is_renderer_initiated, | |
| 689 params.extra_headers, | |
| 690 browser_context_)); | |
| 691 if (params.should_replace_current_entry) | |
| 692 entry->set_should_replace_entry(true); | |
| 693 entry->set_should_clear_history_list(params.should_clear_history_list); | |
| 694 entry->SetIsOverridingUserAgent(override); | |
| 695 entry->set_transferred_global_request_id( | |
| 696 params.transferred_global_request_id); | |
| 697 entry->SetFrameToNavigate(params.frame_name); | |
| 698 | |
| 699 switch (params.load_type) { | |
| 700 case LOAD_TYPE_DEFAULT: | |
| 701 break; | |
| 702 case LOAD_TYPE_BROWSER_INITIATED_HTTP_POST: | |
| 703 entry->SetHasPostData(true); | |
| 704 entry->SetBrowserInitiatedPostData( | |
| 705 params.browser_initiated_post_data.get()); | |
| 706 break; | |
| 707 case LOAD_TYPE_DATA: | |
| 708 entry->SetBaseURLForDataURL(params.base_url_for_data_url); | |
| 709 entry->SetVirtualURL(params.virtual_url_for_data_url); | |
| 710 entry->SetCanLoadLocalResources(params.can_load_local_resources); | |
| 711 break; | |
| 712 default: | |
| 713 NOTREACHED(); | |
| 714 break; | |
| 715 }; | |
| 716 | |
| 717 LoadEntry(entry); | |
| 718 } | |
| 719 | |
| 720 bool NavigationControllerImpl::RendererDidNavigate( | |
| 721 const ViewHostMsg_FrameNavigate_Params& params, | |
| 722 LoadCommittedDetails* details) { | |
| 723 is_initial_navigation_ = false; | |
| 724 | |
| 725 // Save the previous state before we clobber it. | |
| 726 if (GetLastCommittedEntry()) { | |
| 727 details->previous_url = GetLastCommittedEntry()->GetURL(); | |
| 728 details->previous_entry_index = GetLastCommittedEntryIndex(); | |
| 729 } else { | |
| 730 details->previous_url = GURL(); | |
| 731 details->previous_entry_index = -1; | |
| 732 } | |
| 733 | |
| 734 // If we have a pending entry at this point, it should have a SiteInstance. | |
| 735 // Restored entries start out with a null SiteInstance, but we should have | |
| 736 // assigned one in NavigateToPendingEntry. | |
| 737 DCHECK(pending_entry_index_ == -1 || pending_entry_->site_instance()); | |
| 738 | |
| 739 // If we are doing a cross-site reload, we need to replace the existing | |
| 740 // navigation entry, not add another entry to the history. This has the side | |
| 741 // effect of removing forward browsing history, if such existed. | |
| 742 // Or if we are doing a cross-site redirect navigation, | |
| 743 // we will do a similar thing. | |
| 744 details->did_replace_entry = | |
| 745 pending_entry_ && pending_entry_->should_replace_entry(); | |
| 746 | |
| 747 // Do navigation-type specific actions. These will make and commit an entry. | |
| 748 details->type = ClassifyNavigation(params); | |
| 749 | |
| 750 // is_in_page must be computed before the entry gets committed. | |
| 751 details->is_in_page = IsURLInPageNavigation( | |
| 752 params.url, params.was_within_same_page, details->type); | |
| 753 | |
| 754 switch (details->type) { | |
| 755 case NAVIGATION_TYPE_NEW_PAGE: | |
| 756 RendererDidNavigateToNewPage(params, details->did_replace_entry); | |
| 757 break; | |
| 758 case NAVIGATION_TYPE_EXISTING_PAGE: | |
| 759 RendererDidNavigateToExistingPage(params); | |
| 760 break; | |
| 761 case NAVIGATION_TYPE_SAME_PAGE: | |
| 762 RendererDidNavigateToSamePage(params); | |
| 763 break; | |
| 764 case NAVIGATION_TYPE_IN_PAGE: | |
| 765 RendererDidNavigateInPage(params, &details->did_replace_entry); | |
| 766 break; | |
| 767 case NAVIGATION_TYPE_NEW_SUBFRAME: | |
| 768 RendererDidNavigateNewSubframe(params); | |
| 769 break; | |
| 770 case NAVIGATION_TYPE_AUTO_SUBFRAME: | |
| 771 if (!RendererDidNavigateAutoSubframe(params)) | |
| 772 return false; | |
| 773 break; | |
| 774 case NAVIGATION_TYPE_NAV_IGNORE: | |
| 775 // If a pending navigation was in progress, this canceled it. We should | |
| 776 // discard it and make sure it is removed from the URL bar. After that, | |
| 777 // there is nothing we can do with this navigation, so we just return to | |
| 778 // the caller that nothing has happened. | |
| 779 if (pending_entry_) { | |
| 780 DiscardNonCommittedEntries(); | |
| 781 delegate_->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL); | |
| 782 } | |
| 783 return false; | |
| 784 default: | |
| 785 NOTREACHED(); | |
| 786 } | |
| 787 | |
| 788 // At this point, we know that the navigation has just completed, so | |
| 789 // record the time. | |
| 790 // | |
| 791 // TODO(akalin): Use "sane time" as described in | |
| 792 // http://www.chromium.org/developers/design-documents/sane-time . | |
| 793 base::Time timestamp = | |
| 794 time_smoother_.GetSmoothedTime(get_timestamp_callback_.Run()); | |
| 795 DVLOG(1) << "Navigation finished at (smoothed) timestamp " | |
| 796 << timestamp.ToInternalValue(); | |
| 797 | |
| 798 // We should not have a pending entry anymore. Clear it again in case any | |
| 799 // error cases above forgot to do so. | |
| 800 DiscardNonCommittedEntriesInternal(); | |
| 801 | |
| 802 // All committed entries should have nonempty content state so WebKit doesn't | |
| 803 // get confused when we go back to them (see the function for details). | |
| 804 DCHECK(params.page_state.IsValid()); | |
| 805 NavigationEntryImpl* active_entry = | |
| 806 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry()); | |
| 807 active_entry->SetTimestamp(timestamp); | |
| 808 active_entry->SetHttpStatusCode(params.http_status_code); | |
| 809 active_entry->SetPageState(params.page_state); | |
| 810 // No longer needed since content state will hold the post data if any. | |
| 811 active_entry->SetBrowserInitiatedPostData(NULL); | |
| 812 | |
| 813 // Once committed, we do not need to track if the entry was initiated by | |
| 814 // the renderer. | |
| 815 active_entry->set_is_renderer_initiated(false); | |
| 816 | |
| 817 // Once committed, we no longer need to track whether the session history was | |
| 818 // cleared. Navigating to this entry again shouldn't clear it again. | |
| 819 active_entry->set_should_clear_history_list(false); | |
| 820 | |
| 821 // The active entry's SiteInstance should match our SiteInstance. | |
| 822 CHECK(active_entry->site_instance() == delegate_->GetSiteInstance()); | |
| 823 | |
| 824 // Remember the bindings the renderer process has at this point, so that | |
| 825 // we do not grant this entry additional bindings if we come back to it. | |
| 826 active_entry->SetBindings( | |
| 827 delegate_->GetRenderViewHost()->GetEnabledBindings()); | |
| 828 | |
| 829 // Now prep the rest of the details for the notification and broadcast. | |
| 830 details->entry = active_entry; | |
| 831 details->is_main_frame = | |
| 832 PageTransitionIsMainFrame(params.transition); | |
| 833 details->serialized_security_info = params.security_info; | |
| 834 details->http_status_code = params.http_status_code; | |
| 835 NotifyNavigationEntryCommitted(details); | |
| 836 | |
| 837 return true; | |
| 838 } | |
| 839 | |
| 840 NavigationType NavigationControllerImpl::ClassifyNavigation( | |
| 841 const ViewHostMsg_FrameNavigate_Params& params) const { | |
| 842 if (params.page_id == -1) { | |
| 843 // The renderer generates the page IDs, and so if it gives us the invalid | |
| 844 // page ID (-1) we know it didn't actually navigate. This happens in a few | |
| 845 // cases: | |
| 846 // | |
| 847 // - If a page makes a popup navigated to about blank, and then writes | |
| 848 // stuff like a subframe navigated to a real page. We'll get the commit | |
| 849 // for the subframe, but there won't be any commit for the outer page. | |
| 850 // | |
| 851 // - We were also getting these for failed loads (for example, bug 21849). | |
| 852 // The guess is that we get a "load commit" for the alternate error page, | |
| 853 // but that doesn't affect the page ID, so we get the "old" one, which | |
| 854 // could be invalid. This can also happen for a cross-site transition | |
| 855 // that causes us to swap processes. Then the error page load will be in | |
| 856 // a new process with no page IDs ever assigned (and hence a -1 value), | |
| 857 // yet the navigation controller still might have previous pages in its | |
| 858 // list. | |
| 859 // | |
| 860 // In these cases, there's nothing we can do with them, so ignore. | |
| 861 return NAVIGATION_TYPE_NAV_IGNORE; | |
| 862 } | |
| 863 | |
| 864 if (params.page_id > delegate_->GetMaxPageID()) { | |
| 865 // Greater page IDs than we've ever seen before are new pages. We may or may | |
| 866 // not have a pending entry for the page, and this may or may not be the | |
| 867 // main frame. | |
| 868 if (PageTransitionIsMainFrame(params.transition)) | |
| 869 return NAVIGATION_TYPE_NEW_PAGE; | |
| 870 | |
| 871 // When this is a new subframe navigation, we should have a committed page | |
| 872 // for which it's a suframe in. This may not be the case when an iframe is | |
| 873 // navigated on a popup navigated to about:blank (the iframe would be | |
| 874 // written into the popup by script on the main page). For these cases, | |
| 875 // there isn't any navigation stuff we can do, so just ignore it. | |
| 876 if (!GetLastCommittedEntry()) | |
| 877 return NAVIGATION_TYPE_NAV_IGNORE; | |
| 878 | |
| 879 // Valid subframe navigation. | |
| 880 return NAVIGATION_TYPE_NEW_SUBFRAME; | |
| 881 } | |
| 882 | |
| 883 // We only clear the session history when navigating to a new page. | |
| 884 DCHECK(!params.history_list_was_cleared); | |
| 885 | |
| 886 // Now we know that the notification is for an existing page. Find that entry. | |
| 887 int existing_entry_index = GetEntryIndexWithPageID( | |
| 888 delegate_->GetSiteInstance(), | |
| 889 params.page_id); | |
| 890 if (existing_entry_index == -1) { | |
| 891 // The page was not found. It could have been pruned because of the limit on | |
| 892 // back/forward entries (not likely since we'll usually tell it to navigate | |
| 893 // to such entries). It could also mean that the renderer is smoking crack. | |
| 894 NOTREACHED(); | |
| 895 | |
| 896 // Because the unknown entry has committed, we risk showing the wrong URL in | |
| 897 // release builds. Instead, we'll kill the renderer process to be safe. | |
| 898 LOG(ERROR) << "terminating renderer for bad navigation: " << params.url; | |
| 899 RecordAction(UserMetricsAction("BadMessageTerminate_NC")); | |
| 900 | |
| 901 // Temporary code so we can get more information. Format: | |
| 902 // http://url/foo.html#page1#max3#frame1#ids:2_Nx,1_1x,3_2 | |
| 903 std::string temp = params.url.spec(); | |
| 904 temp.append("#page"); | |
| 905 temp.append(base::IntToString(params.page_id)); | |
| 906 temp.append("#max"); | |
| 907 temp.append(base::IntToString(delegate_->GetMaxPageID())); | |
| 908 temp.append("#frame"); | |
| 909 temp.append(base::IntToString(params.frame_id)); | |
| 910 temp.append("#ids"); | |
| 911 for (int i = 0; i < static_cast<int>(entries_.size()); ++i) { | |
| 912 // Append entry metadata (e.g., 3_7x): | |
| 913 // 3: page_id | |
| 914 // 7: SiteInstance ID, or N for null | |
| 915 // x: appended if not from the current SiteInstance | |
| 916 temp.append(base::IntToString(entries_[i]->GetPageID())); | |
| 917 temp.append("_"); | |
| 918 if (entries_[i]->site_instance()) | |
| 919 temp.append(base::IntToString(entries_[i]->site_instance()->GetId())); | |
| 920 else | |
| 921 temp.append("N"); | |
| 922 if (entries_[i]->site_instance() != delegate_->GetSiteInstance()) | |
| 923 temp.append("x"); | |
| 924 temp.append(","); | |
| 925 } | |
| 926 GURL url(temp); | |
| 927 static_cast<RenderViewHostImpl*>( | |
| 928 delegate_->GetRenderViewHost())->Send( | |
| 929 new ViewMsg_TempCrashWithData(url)); | |
| 930 return NAVIGATION_TYPE_NAV_IGNORE; | |
| 931 } | |
| 932 NavigationEntryImpl* existing_entry = entries_[existing_entry_index].get(); | |
| 933 | |
| 934 if (!PageTransitionIsMainFrame(params.transition)) { | |
| 935 // All manual subframes would get new IDs and were handled above, so we | |
| 936 // know this is auto. Since the current page was found in the navigation | |
| 937 // entry list, we're guaranteed to have a last committed entry. | |
| 938 DCHECK(GetLastCommittedEntry()); | |
| 939 return NAVIGATION_TYPE_AUTO_SUBFRAME; | |
| 940 } | |
| 941 | |
| 942 // Anything below here we know is a main frame navigation. | |
| 943 if (pending_entry_ && | |
| 944 !pending_entry_->is_renderer_initiated() && | |
| 945 existing_entry != pending_entry_ && | |
| 946 pending_entry_->GetPageID() == -1 && | |
| 947 existing_entry == GetLastCommittedEntry()) { | |
| 948 // In this case, we have a pending entry for a URL but WebCore didn't do a | |
| 949 // new navigation. This happens when you press enter in the URL bar to | |
| 950 // reload. We will create a pending entry, but WebKit will convert it to | |
| 951 // a reload since it's the same page and not create a new entry for it | |
| 952 // (the user doesn't want to have a new back/forward entry when they do | |
| 953 // this). If this matches the last committed entry, we want to just ignore | |
| 954 // the pending entry and go back to where we were (the "existing entry"). | |
| 955 return NAVIGATION_TYPE_SAME_PAGE; | |
| 956 } | |
| 957 | |
| 958 // Any toplevel navigations with the same base (minus the reference fragment) | |
| 959 // are in-page navigations. We weeded out subframe navigations above. Most of | |
| 960 // the time this doesn't matter since WebKit doesn't tell us about subframe | |
| 961 // navigations that don't actually navigate, but it can happen when there is | |
| 962 // an encoding override (it always sends a navigation request). | |
| 963 if (AreURLsInPageNavigation(existing_entry->GetURL(), params.url, | |
| 964 params.was_within_same_page, | |
| 965 NAVIGATION_TYPE_UNKNOWN)) { | |
| 966 return NAVIGATION_TYPE_IN_PAGE; | |
| 967 } | |
| 968 | |
| 969 // Since we weeded out "new" navigations above, we know this is an existing | |
| 970 // (back/forward) navigation. | |
| 971 return NAVIGATION_TYPE_EXISTING_PAGE; | |
| 972 } | |
| 973 | |
| 974 bool NavigationControllerImpl::IsRedirect( | |
| 975 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 976 // For main frame transition, we judge by params.transition. | |
| 977 // Otherwise, by params.redirects. | |
| 978 if (PageTransitionIsMainFrame(params.transition)) { | |
| 979 return PageTransitionIsRedirect(params.transition); | |
| 980 } | |
| 981 return params.redirects.size() > 1; | |
| 982 } | |
| 983 | |
| 984 void NavigationControllerImpl::RendererDidNavigateToNewPage( | |
| 985 const ViewHostMsg_FrameNavigate_Params& params, bool replace_entry) { | |
| 986 NavigationEntryImpl* new_entry; | |
| 987 bool update_virtual_url; | |
| 988 // Only make a copy of the pending entry if it is appropriate for the new page | |
| 989 // that was just loaded. We verify this at a coarse grain by checking that | |
| 990 // the SiteInstance hasn't been assigned to something else. | |
| 991 if (pending_entry_ && | |
| 992 (!pending_entry_->site_instance() || | |
| 993 pending_entry_->site_instance() == delegate_->GetSiteInstance())) { | |
| 994 new_entry = new NavigationEntryImpl(*pending_entry_); | |
| 995 | |
| 996 // Don't use the page type from the pending entry. Some interstitial page | |
| 997 // may have set the type to interstitial. Once we commit, however, the page | |
| 998 // type must always be normal. | |
| 999 new_entry->set_page_type(PAGE_TYPE_NORMAL); | |
| 1000 update_virtual_url = new_entry->update_virtual_url_with_url(); | |
| 1001 } else { | |
| 1002 new_entry = new NavigationEntryImpl; | |
| 1003 | |
| 1004 // Find out whether the new entry needs to update its virtual URL on URL | |
| 1005 // change and set up the entry accordingly. This is needed to correctly | |
| 1006 // update the virtual URL when replaceState is called after a pushState. | |
| 1007 GURL url = params.url; | |
| 1008 bool needs_update = false; | |
| 1009 BrowserURLHandlerImpl::GetInstance()->RewriteURLIfNecessary( | |
| 1010 &url, browser_context_, &needs_update); | |
| 1011 new_entry->set_update_virtual_url_with_url(needs_update); | |
| 1012 | |
| 1013 // When navigating to a new page, give the browser URL handler a chance to | |
| 1014 // update the virtual URL based on the new URL. For example, this is needed | |
| 1015 // to show chrome://bookmarks/#1 when the bookmarks webui extension changes | |
| 1016 // the URL. | |
| 1017 update_virtual_url = needs_update; | |
| 1018 } | |
| 1019 | |
| 1020 new_entry->SetURL(params.url); | |
| 1021 if (update_virtual_url) | |
| 1022 UpdateVirtualURLToURL(new_entry, params.url); | |
| 1023 new_entry->SetReferrer(params.referrer); | |
| 1024 new_entry->SetPageID(params.page_id); | |
| 1025 new_entry->SetTransitionType(params.transition); | |
| 1026 new_entry->set_site_instance( | |
| 1027 static_cast<SiteInstanceImpl*>(delegate_->GetSiteInstance())); | |
| 1028 new_entry->SetHasPostData(params.is_post); | |
| 1029 new_entry->SetPostID(params.post_id); | |
| 1030 new_entry->SetOriginalRequestURL(params.original_request_url); | |
| 1031 new_entry->SetIsOverridingUserAgent(params.is_overriding_user_agent); | |
| 1032 | |
| 1033 DCHECK(!params.history_list_was_cleared || !replace_entry); | |
| 1034 // The browser requested to clear the session history when it initiated the | |
| 1035 // navigation. Now we know that the renderer has updated its state accordingly | |
| 1036 // and it is safe to also clear the browser side history. | |
| 1037 if (params.history_list_was_cleared) { | |
| 1038 DiscardNonCommittedEntriesInternal(); | |
| 1039 entries_.clear(); | |
| 1040 last_committed_entry_index_ = -1; | |
| 1041 } | |
| 1042 | |
| 1043 InsertOrReplaceEntry(new_entry, replace_entry); | |
| 1044 } | |
| 1045 | |
| 1046 void NavigationControllerImpl::RendererDidNavigateToExistingPage( | |
| 1047 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 1048 // We should only get here for main frame navigations. | |
| 1049 DCHECK(PageTransitionIsMainFrame(params.transition)); | |
| 1050 | |
| 1051 // This is a back/forward navigation. The existing page for the ID is | |
| 1052 // guaranteed to exist by ClassifyNavigation, and we just need to update it | |
| 1053 // with new information from the renderer. | |
| 1054 int entry_index = GetEntryIndexWithPageID(delegate_->GetSiteInstance(), | |
| 1055 params.page_id); | |
| 1056 DCHECK(entry_index >= 0 && | |
| 1057 entry_index < static_cast<int>(entries_.size())); | |
| 1058 NavigationEntryImpl* entry = entries_[entry_index].get(); | |
| 1059 | |
| 1060 // The URL may have changed due to redirects. | |
| 1061 entry->SetURL(params.url); | |
| 1062 if (entry->update_virtual_url_with_url()) | |
| 1063 UpdateVirtualURLToURL(entry, params.url); | |
| 1064 | |
| 1065 // The redirected to page should not inherit the favicon from the previous | |
| 1066 // page. | |
| 1067 if (PageTransitionIsRedirect(params.transition)) | |
| 1068 entry->GetFavicon() = FaviconStatus(); | |
| 1069 | |
| 1070 // The site instance will normally be the same except during session restore, | |
| 1071 // when no site instance will be assigned. | |
| 1072 DCHECK(entry->site_instance() == NULL || | |
| 1073 entry->site_instance() == delegate_->GetSiteInstance()); | |
| 1074 entry->set_site_instance( | |
| 1075 static_cast<SiteInstanceImpl*>(delegate_->GetSiteInstance())); | |
| 1076 | |
| 1077 entry->SetHasPostData(params.is_post); | |
| 1078 entry->SetPostID(params.post_id); | |
| 1079 | |
| 1080 // The entry we found in the list might be pending if the user hit | |
| 1081 // back/forward/reload. This load should commit it (since it's already in the | |
| 1082 // list, we can just discard the pending pointer). We should also discard the | |
| 1083 // pending entry if it corresponds to a different navigation, since that one | |
| 1084 // is now likely canceled. If it is not canceled, we will treat it as a new | |
| 1085 // navigation when it arrives, which is also ok. | |
| 1086 // | |
| 1087 // Note that we need to use the "internal" version since we don't want to | |
| 1088 // actually change any other state, just kill the pointer. | |
| 1089 DiscardNonCommittedEntriesInternal(); | |
| 1090 | |
| 1091 // If a transient entry was removed, the indices might have changed, so we | |
| 1092 // have to query the entry index again. | |
| 1093 last_committed_entry_index_ = | |
| 1094 GetEntryIndexWithPageID(delegate_->GetSiteInstance(), params.page_id); | |
| 1095 } | |
| 1096 | |
| 1097 void NavigationControllerImpl::RendererDidNavigateToSamePage( | |
| 1098 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 1099 // This mode implies we have a pending entry that's the same as an existing | |
| 1100 // entry for this page ID. This entry is guaranteed to exist by | |
| 1101 // ClassifyNavigation. All we need to do is update the existing entry. | |
| 1102 NavigationEntryImpl* existing_entry = GetEntryWithPageID( | |
| 1103 delegate_->GetSiteInstance(), params.page_id); | |
| 1104 | |
| 1105 // We assign the entry's unique ID to be that of the new one. Since this is | |
| 1106 // always the result of a user action, we want to dismiss infobars, etc. like | |
| 1107 // a regular user-initiated navigation. | |
| 1108 existing_entry->set_unique_id(pending_entry_->GetUniqueID()); | |
| 1109 | |
| 1110 // The URL may have changed due to redirects. | |
| 1111 if (existing_entry->update_virtual_url_with_url()) | |
| 1112 UpdateVirtualURLToURL(existing_entry, params.url); | |
| 1113 existing_entry->SetURL(params.url); | |
| 1114 | |
| 1115 DiscardNonCommittedEntries(); | |
| 1116 } | |
| 1117 | |
| 1118 void NavigationControllerImpl::RendererDidNavigateInPage( | |
| 1119 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) { | |
| 1120 DCHECK(PageTransitionIsMainFrame(params.transition)) << | |
| 1121 "WebKit should only tell us about in-page navs for the main frame."; | |
| 1122 // We're guaranteed to have an entry for this one. | |
| 1123 NavigationEntryImpl* existing_entry = GetEntryWithPageID( | |
| 1124 delegate_->GetSiteInstance(), params.page_id); | |
| 1125 | |
| 1126 // Reference fragment navigation. We're guaranteed to have the last_committed | |
| 1127 // entry and it will be the same page as the new navigation (minus the | |
| 1128 // reference fragments, of course). We'll update the URL of the existing | |
| 1129 // entry without pruning the forward history. | |
| 1130 existing_entry->SetURL(params.url); | |
| 1131 if (existing_entry->update_virtual_url_with_url()) | |
| 1132 UpdateVirtualURLToURL(existing_entry, params.url); | |
| 1133 | |
| 1134 // This replaces the existing entry since the page ID didn't change. | |
| 1135 *did_replace_entry = true; | |
| 1136 | |
| 1137 DiscardNonCommittedEntriesInternal(); | |
| 1138 | |
| 1139 // If a transient entry was removed, the indices might have changed, so we | |
| 1140 // have to query the entry index again. | |
| 1141 last_committed_entry_index_ = | |
| 1142 GetEntryIndexWithPageID(delegate_->GetSiteInstance(), params.page_id); | |
| 1143 } | |
| 1144 | |
| 1145 void NavigationControllerImpl::RendererDidNavigateNewSubframe( | |
| 1146 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 1147 if (PageTransitionCoreTypeIs(params.transition, | |
| 1148 PAGE_TRANSITION_AUTO_SUBFRAME)) { | |
| 1149 // This is not user-initiated. Ignore. | |
| 1150 DiscardNonCommittedEntriesInternal(); | |
| 1151 return; | |
| 1152 } | |
| 1153 | |
| 1154 // Manual subframe navigations just get the current entry cloned so the user | |
| 1155 // can go back or forward to it. The actual subframe information will be | |
| 1156 // stored in the page state for each of those entries. This happens out of | |
| 1157 // band with the actual navigations. | |
| 1158 DCHECK(GetLastCommittedEntry()) << "ClassifyNavigation should guarantee " | |
| 1159 << "that a last committed entry exists."; | |
| 1160 NavigationEntryImpl* new_entry = new NavigationEntryImpl( | |
| 1161 *NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry())); | |
| 1162 new_entry->SetPageID(params.page_id); | |
| 1163 InsertOrReplaceEntry(new_entry, false); | |
| 1164 } | |
| 1165 | |
| 1166 bool NavigationControllerImpl::RendererDidNavigateAutoSubframe( | |
| 1167 const ViewHostMsg_FrameNavigate_Params& params) { | |
| 1168 // We're guaranteed to have a previously committed entry, and we now need to | |
| 1169 // handle navigation inside of a subframe in it without creating a new entry. | |
| 1170 DCHECK(GetLastCommittedEntry()); | |
| 1171 | |
| 1172 // Handle the case where we're navigating back/forward to a previous subframe | |
| 1173 // navigation entry. This is case "2." in NAV_AUTO_SUBFRAME comment in the | |
| 1174 // header file. In case "1." this will be a NOP. | |
| 1175 int entry_index = GetEntryIndexWithPageID( | |
| 1176 delegate_->GetSiteInstance(), | |
| 1177 params.page_id); | |
| 1178 if (entry_index < 0 || | |
| 1179 entry_index >= static_cast<int>(entries_.size())) { | |
| 1180 NOTREACHED(); | |
| 1181 return false; | |
| 1182 } | |
| 1183 | |
| 1184 // Update the current navigation entry in case we're going back/forward. | |
| 1185 if (entry_index != last_committed_entry_index_) { | |
| 1186 last_committed_entry_index_ = entry_index; | |
| 1187 DiscardNonCommittedEntriesInternal(); | |
| 1188 return true; | |
| 1189 } | |
| 1190 | |
| 1191 // We do not need to discard the pending entry in this case, since we will | |
| 1192 // not generate commit notifications for this auto-subframe navigation. | |
| 1193 return false; | |
| 1194 } | |
| 1195 | |
| 1196 int NavigationControllerImpl::GetIndexOfEntry( | |
| 1197 const NavigationEntryImpl* entry) const { | |
| 1198 const NavigationEntries::const_iterator i(std::find( | |
| 1199 entries_.begin(), | |
| 1200 entries_.end(), | |
| 1201 entry)); | |
| 1202 return (i == entries_.end()) ? -1 : static_cast<int>(i - entries_.begin()); | |
| 1203 } | |
| 1204 | |
| 1205 bool NavigationControllerImpl::IsURLInPageNavigation( | |
| 1206 const GURL& url, | |
| 1207 bool renderer_says_in_page, | |
| 1208 NavigationType navigation_type) const { | |
| 1209 NavigationEntry* last_committed = GetLastCommittedEntry(); | |
| 1210 return last_committed && AreURLsInPageNavigation( | |
| 1211 last_committed->GetURL(), url, renderer_says_in_page, navigation_type); | |
| 1212 } | |
| 1213 | |
| 1214 void NavigationControllerImpl::CopyStateFrom( | |
| 1215 const NavigationController& temp) { | |
| 1216 const NavigationControllerImpl& source = | |
| 1217 static_cast<const NavigationControllerImpl&>(temp); | |
| 1218 // Verify that we look new. | |
| 1219 DCHECK(GetEntryCount() == 0 && !GetPendingEntry()); | |
| 1220 | |
| 1221 if (source.GetEntryCount() == 0) | |
| 1222 return; // Nothing new to do. | |
| 1223 | |
| 1224 needs_reload_ = true; | |
| 1225 InsertEntriesFrom(source, source.GetEntryCount()); | |
| 1226 | |
| 1227 for (SessionStorageNamespaceMap::const_iterator it = | |
| 1228 source.session_storage_namespace_map_.begin(); | |
| 1229 it != source.session_storage_namespace_map_.end(); | |
| 1230 ++it) { | |
| 1231 SessionStorageNamespaceImpl* source_namespace = | |
| 1232 static_cast<SessionStorageNamespaceImpl*>(it->second.get()); | |
| 1233 session_storage_namespace_map_[it->first] = source_namespace->Clone(); | |
| 1234 } | |
| 1235 | |
| 1236 FinishRestore(source.last_committed_entry_index_, RESTORE_CURRENT_SESSION); | |
| 1237 | |
| 1238 // Copy the max page id map from the old tab to the new tab. This ensures | |
| 1239 // that new and existing navigations in the tab's current SiteInstances | |
| 1240 // are identified properly. | |
| 1241 delegate_->CopyMaxPageIDsFrom(source.delegate()->GetWebContents()); | |
| 1242 } | |
| 1243 | |
| 1244 void NavigationControllerImpl::CopyStateFromAndPrune( | |
| 1245 NavigationController* temp) { | |
| 1246 // It is up to callers to check the invariants before calling this. | |
| 1247 CHECK(CanPruneAllButVisible()); | |
| 1248 | |
| 1249 NavigationControllerImpl* source = | |
| 1250 static_cast<NavigationControllerImpl*>(temp); | |
| 1251 // The SiteInstance and page_id of the last committed entry needs to be | |
| 1252 // remembered at this point, in case there is only one committed entry | |
| 1253 // and it is pruned. We use a scoped_refptr to ensure the SiteInstance | |
| 1254 // can't be freed during this time period. | |
| 1255 NavigationEntryImpl* last_committed = | |
| 1256 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry()); | |
| 1257 scoped_refptr<SiteInstance> site_instance( | |
| 1258 last_committed->site_instance()); | |
| 1259 int32 minimum_page_id = last_committed->GetPageID(); | |
| 1260 int32 max_page_id = | |
| 1261 delegate_->GetMaxPageIDForSiteInstance(site_instance.get()); | |
| 1262 | |
| 1263 // Remove all the entries leaving the active entry. | |
| 1264 PruneAllButVisibleInternal(); | |
| 1265 | |
| 1266 // We now have one entry, possibly with a new pending entry. Ensure that | |
| 1267 // adding the entries from source won't put us over the limit. | |
| 1268 DCHECK_EQ(1, GetEntryCount()); | |
| 1269 source->PruneOldestEntryIfFull(); | |
| 1270 | |
| 1271 // Insert the entries from source. Don't use source->GetCurrentEntryIndex as | |
| 1272 // we don't want to copy over the transient entry. Ignore any pending entry, | |
| 1273 // since it has not committed in source. | |
| 1274 int max_source_index = source->last_committed_entry_index_; | |
| 1275 if (max_source_index == -1) | |
| 1276 max_source_index = source->GetEntryCount(); | |
| 1277 else | |
| 1278 max_source_index++; | |
| 1279 InsertEntriesFrom(*source, max_source_index); | |
| 1280 | |
| 1281 // Adjust indices such that the last entry and pending are at the end now. | |
| 1282 last_committed_entry_index_ = GetEntryCount() - 1; | |
| 1283 | |
| 1284 delegate_->SetHistoryLengthAndPrune(site_instance.get(), | |
| 1285 max_source_index, | |
| 1286 minimum_page_id); | |
| 1287 | |
| 1288 // Copy the max page id map from the old tab to the new tab. This ensures | |
| 1289 // that new and existing navigations in the tab's current SiteInstances | |
| 1290 // are identified properly. | |
| 1291 delegate_->CopyMaxPageIDsFrom(source->delegate()->GetWebContents()); | |
| 1292 | |
| 1293 // If there is a last committed entry, be sure to include it in the new | |
| 1294 // max page ID map. | |
| 1295 if (max_page_id > -1) { | |
| 1296 delegate_->UpdateMaxPageIDForSiteInstance(site_instance.get(), | |
| 1297 max_page_id); | |
| 1298 } | |
| 1299 } | |
| 1300 | |
| 1301 bool NavigationControllerImpl::CanPruneAllButVisible() { | |
| 1302 // If there is no last committed entry, we cannot prune. Even if there is a | |
| 1303 // pending entry, it may not commit, leaving this WebContents blank, despite | |
| 1304 // possibly giving it new entries via CopyStateFromAndPrune. | |
| 1305 if (last_committed_entry_index_ == -1) | |
| 1306 return false; | |
| 1307 | |
| 1308 // We cannot prune if there is a pending entry at an existing entry index. | |
| 1309 // It may not commit, so we have to keep the last committed entry, and thus | |
| 1310 // there is no sensible place to keep the pending entry. It is ok to have | |
| 1311 // a new pending entry, which can optionally commit as a new navigation. | |
| 1312 if (pending_entry_index_ != -1) | |
| 1313 return false; | |
| 1314 | |
| 1315 // We should not prune if we are currently showing a transient entry. | |
| 1316 if (transient_entry_index_ != -1) | |
| 1317 return false; | |
| 1318 | |
| 1319 return true; | |
| 1320 } | |
| 1321 | |
| 1322 void NavigationControllerImpl::PruneAllButVisible() { | |
| 1323 PruneAllButVisibleInternal(); | |
| 1324 | |
| 1325 // We should still have a last committed entry. | |
| 1326 DCHECK_NE(-1, last_committed_entry_index_); | |
| 1327 | |
| 1328 // We pass 0 instead of GetEntryCount() for the history_length parameter of | |
| 1329 // SetHistoryLengthAndPrune, because it will create history_length additional | |
| 1330 // history entries. | |
| 1331 // TODO(jochen): This API is confusing and we should clean it up. | |
| 1332 // http://crbug.com/178491 | |
| 1333 NavigationEntryImpl* entry = | |
| 1334 NavigationEntryImpl::FromNavigationEntry(GetVisibleEntry()); | |
| 1335 delegate_->SetHistoryLengthAndPrune( | |
| 1336 entry->site_instance(), 0, entry->GetPageID()); | |
| 1337 } | |
| 1338 | |
| 1339 void NavigationControllerImpl::PruneAllButVisibleInternal() { | |
| 1340 // It is up to callers to check the invariants before calling this. | |
| 1341 CHECK(CanPruneAllButVisible()); | |
| 1342 | |
| 1343 // Erase all entries but the last committed entry. There may still be a | |
| 1344 // new pending entry after this. | |
| 1345 entries_.erase(entries_.begin(), | |
| 1346 entries_.begin() + last_committed_entry_index_); | |
| 1347 entries_.erase(entries_.begin() + 1, entries_.end()); | |
| 1348 last_committed_entry_index_ = 0; | |
| 1349 } | |
| 1350 | |
| 1351 void NavigationControllerImpl::ClearAllScreenshots() { | |
| 1352 screenshot_manager_->ClearAllScreenshots(); | |
| 1353 } | |
| 1354 | |
| 1355 void NavigationControllerImpl::SetSessionStorageNamespace( | |
| 1356 const std::string& partition_id, | |
| 1357 SessionStorageNamespace* session_storage_namespace) { | |
| 1358 if (!session_storage_namespace) | |
| 1359 return; | |
| 1360 | |
| 1361 // We can't overwrite an existing SessionStorage without violating spec. | |
| 1362 // Attempts to do so may give a tab access to another tab's session storage | |
| 1363 // so die hard on an error. | |
| 1364 bool successful_insert = session_storage_namespace_map_.insert( | |
| 1365 make_pair(partition_id, | |
| 1366 static_cast<SessionStorageNamespaceImpl*>( | |
| 1367 session_storage_namespace))) | |
| 1368 .second; | |
| 1369 CHECK(successful_insert) << "Cannot replace existing SessionStorageNamespace"; | |
| 1370 } | |
| 1371 | |
| 1372 void NavigationControllerImpl::SetMaxRestoredPageID(int32 max_id) { | |
| 1373 max_restored_page_id_ = max_id; | |
| 1374 } | |
| 1375 | |
| 1376 int32 NavigationControllerImpl::GetMaxRestoredPageID() const { | |
| 1377 return max_restored_page_id_; | |
| 1378 } | |
| 1379 | |
| 1380 SessionStorageNamespace* | |
| 1381 NavigationControllerImpl::GetSessionStorageNamespace(SiteInstance* instance) { | |
| 1382 std::string partition_id; | |
| 1383 if (instance) { | |
| 1384 // TODO(ajwong): When GetDefaultSessionStorageNamespace() goes away, remove | |
| 1385 // this if statement so |instance| must not be NULL. | |
| 1386 partition_id = | |
| 1387 GetContentClient()->browser()->GetStoragePartitionIdForSite( | |
| 1388 browser_context_, instance->GetSiteURL()); | |
| 1389 } | |
| 1390 | |
| 1391 SessionStorageNamespaceMap::const_iterator it = | |
| 1392 session_storage_namespace_map_.find(partition_id); | |
| 1393 if (it != session_storage_namespace_map_.end()) | |
| 1394 return it->second.get(); | |
| 1395 | |
| 1396 // Create one if no one has accessed session storage for this partition yet. | |
| 1397 // | |
| 1398 // TODO(ajwong): Should this use the |partition_id| directly rather than | |
| 1399 // re-lookup via |instance|? http://crbug.com/142685 | |
| 1400 StoragePartition* partition = | |
| 1401 BrowserContext::GetStoragePartition(browser_context_, instance); | |
| 1402 SessionStorageNamespaceImpl* session_storage_namespace = | |
| 1403 new SessionStorageNamespaceImpl( | |
| 1404 static_cast<DOMStorageContextWrapper*>( | |
| 1405 partition->GetDOMStorageContext())); | |
| 1406 session_storage_namespace_map_[partition_id] = session_storage_namespace; | |
| 1407 | |
| 1408 return session_storage_namespace; | |
| 1409 } | |
| 1410 | |
| 1411 SessionStorageNamespace* | |
| 1412 NavigationControllerImpl::GetDefaultSessionStorageNamespace() { | |
| 1413 // TODO(ajwong): Remove if statement in GetSessionStorageNamespace(). | |
| 1414 return GetSessionStorageNamespace(NULL); | |
| 1415 } | |
| 1416 | |
| 1417 const SessionStorageNamespaceMap& | |
| 1418 NavigationControllerImpl::GetSessionStorageNamespaceMap() const { | |
| 1419 return session_storage_namespace_map_; | |
| 1420 } | |
| 1421 | |
| 1422 bool NavigationControllerImpl::NeedsReload() const { | |
| 1423 return needs_reload_; | |
| 1424 } | |
| 1425 | |
| 1426 void NavigationControllerImpl::SetNeedsReload() { | |
| 1427 needs_reload_ = true; | |
| 1428 } | |
| 1429 | |
| 1430 void NavigationControllerImpl::RemoveEntryAtIndexInternal(int index) { | |
| 1431 DCHECK(index < GetEntryCount()); | |
| 1432 DCHECK(index != last_committed_entry_index_); | |
| 1433 | |
| 1434 DiscardNonCommittedEntries(); | |
| 1435 | |
| 1436 entries_.erase(entries_.begin() + index); | |
| 1437 if (last_committed_entry_index_ > index) | |
| 1438 last_committed_entry_index_--; | |
| 1439 } | |
| 1440 | |
| 1441 void NavigationControllerImpl::DiscardNonCommittedEntries() { | |
| 1442 bool transient = transient_entry_index_ != -1; | |
| 1443 DiscardNonCommittedEntriesInternal(); | |
| 1444 | |
| 1445 // If there was a transient entry, invalidate everything so the new active | |
| 1446 // entry state is shown. | |
| 1447 if (transient) { | |
| 1448 delegate_->NotifyNavigationStateChanged(kInvalidateAll); | |
| 1449 } | |
| 1450 } | |
| 1451 | |
| 1452 NavigationEntry* NavigationControllerImpl::GetPendingEntry() const { | |
| 1453 return pending_entry_; | |
| 1454 } | |
| 1455 | |
| 1456 int NavigationControllerImpl::GetPendingEntryIndex() const { | |
| 1457 return pending_entry_index_; | |
| 1458 } | |
| 1459 | |
| 1460 void NavigationControllerImpl::InsertOrReplaceEntry(NavigationEntryImpl* entry, | |
| 1461 bool replace) { | |
| 1462 DCHECK(entry->GetTransitionType() != PAGE_TRANSITION_AUTO_SUBFRAME); | |
| 1463 | |
| 1464 // Copy the pending entry's unique ID to the committed entry. | |
| 1465 // I don't know if pending_entry_index_ can be other than -1 here. | |
| 1466 const NavigationEntryImpl* const pending_entry = | |
| 1467 (pending_entry_index_ == -1) ? | |
| 1468 pending_entry_ : entries_[pending_entry_index_].get(); | |
| 1469 if (pending_entry) | |
| 1470 entry->set_unique_id(pending_entry->GetUniqueID()); | |
| 1471 | |
| 1472 DiscardNonCommittedEntriesInternal(); | |
| 1473 | |
| 1474 int current_size = static_cast<int>(entries_.size()); | |
| 1475 | |
| 1476 if (current_size > 0) { | |
| 1477 // Prune any entries which are in front of the current entry. | |
| 1478 // Also prune the current entry if we are to replace the current entry. | |
| 1479 // last_committed_entry_index_ must be updated here since calls to | |
| 1480 // NotifyPrunedEntries() below may re-enter and we must make sure | |
| 1481 // last_committed_entry_index_ is not left in an invalid state. | |
| 1482 if (replace) | |
| 1483 --last_committed_entry_index_; | |
| 1484 | |
| 1485 int num_pruned = 0; | |
| 1486 while (last_committed_entry_index_ < (current_size - 1)) { | |
| 1487 num_pruned++; | |
| 1488 entries_.pop_back(); | |
| 1489 current_size--; | |
| 1490 } | |
| 1491 if (num_pruned > 0) // Only notify if we did prune something. | |
| 1492 NotifyPrunedEntries(this, false, num_pruned); | |
| 1493 } | |
| 1494 | |
| 1495 PruneOldestEntryIfFull(); | |
| 1496 | |
| 1497 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry)); | |
| 1498 last_committed_entry_index_ = static_cast<int>(entries_.size()) - 1; | |
| 1499 | |
| 1500 // This is a new page ID, so we need everybody to know about it. | |
| 1501 delegate_->UpdateMaxPageID(entry->GetPageID()); | |
| 1502 } | |
| 1503 | |
| 1504 void NavigationControllerImpl::PruneOldestEntryIfFull() { | |
| 1505 if (entries_.size() >= max_entry_count()) { | |
| 1506 DCHECK_EQ(max_entry_count(), entries_.size()); | |
| 1507 DCHECK_GT(last_committed_entry_index_, 0); | |
| 1508 RemoveEntryAtIndex(0); | |
| 1509 NotifyPrunedEntries(this, true, 1); | |
| 1510 } | |
| 1511 } | |
| 1512 | |
| 1513 void NavigationControllerImpl::NavigateToPendingEntry(ReloadType reload_type) { | |
| 1514 needs_reload_ = false; | |
| 1515 | |
| 1516 // If we were navigating to a slow-to-commit page, and the user performs | |
| 1517 // a session history navigation to the last committed page, RenderViewHost | |
| 1518 // will force the throbber to start, but WebKit will essentially ignore the | |
| 1519 // navigation, and won't send a message to stop the throbber. To prevent this | |
| 1520 // from happening, we drop the navigation here and stop the slow-to-commit | |
| 1521 // page from loading (which would normally happen during the navigation). | |
| 1522 if (pending_entry_index_ != -1 && | |
| 1523 pending_entry_index_ == last_committed_entry_index_ && | |
| 1524 (entries_[pending_entry_index_]->restore_type() == | |
| 1525 NavigationEntryImpl::RESTORE_NONE) && | |
| 1526 (entries_[pending_entry_index_]->GetTransitionType() & | |
| 1527 PAGE_TRANSITION_FORWARD_BACK)) { | |
| 1528 delegate_->Stop(); | |
| 1529 | |
| 1530 // If an interstitial page is showing, we want to close it to get back | |
| 1531 // to what was showing before. | |
| 1532 if (delegate_->GetInterstitialPage()) | |
| 1533 delegate_->GetInterstitialPage()->DontProceed(); | |
| 1534 | |
| 1535 DiscardNonCommittedEntries(); | |
| 1536 return; | |
| 1537 } | |
| 1538 | |
| 1539 // If an interstitial page is showing, the previous renderer is blocked and | |
| 1540 // cannot make new requests. Unblock (and disable) it to allow this | |
| 1541 // navigation to succeed. The interstitial will stay visible until the | |
| 1542 // resulting DidNavigate. | |
| 1543 if (delegate_->GetInterstitialPage()) { | |
| 1544 static_cast<InterstitialPageImpl*>(delegate_->GetInterstitialPage())-> | |
| 1545 CancelForNavigation(); | |
| 1546 } | |
| 1547 | |
| 1548 // For session history navigations only the pending_entry_index_ is set. | |
| 1549 if (!pending_entry_) { | |
| 1550 DCHECK_NE(pending_entry_index_, -1); | |
| 1551 pending_entry_ = entries_[pending_entry_index_].get(); | |
| 1552 } | |
| 1553 | |
| 1554 if (!delegate_->NavigateToPendingEntry(reload_type)) | |
| 1555 DiscardNonCommittedEntries(); | |
| 1556 | |
| 1557 // If the entry is being restored and doesn't have a SiteInstance yet, fill | |
| 1558 // it in now that we know. This allows us to find the entry when it commits. | |
| 1559 // This works for browser-initiated navigations. We handle renderer-initiated | |
| 1560 // navigations to restored entries in WebContentsImpl::OnGoToEntryAtOffset. | |
| 1561 if (pending_entry_ && !pending_entry_->site_instance() && | |
| 1562 pending_entry_->restore_type() != NavigationEntryImpl::RESTORE_NONE) { | |
| 1563 pending_entry_->set_site_instance(static_cast<SiteInstanceImpl*>( | |
| 1564 delegate_->GetPendingSiteInstance())); | |
| 1565 pending_entry_->set_restore_type(NavigationEntryImpl::RESTORE_NONE); | |
| 1566 } | |
| 1567 } | |
| 1568 | |
| 1569 void NavigationControllerImpl::NotifyNavigationEntryCommitted( | |
| 1570 LoadCommittedDetails* details) { | |
| 1571 details->entry = GetLastCommittedEntry(); | |
| 1572 | |
| 1573 // We need to notify the ssl_manager_ before the web_contents_ so the | |
| 1574 // location bar will have up-to-date information about the security style | |
| 1575 // when it wants to draw. See http://crbug.com/11157 | |
| 1576 ssl_manager_.DidCommitProvisionalLoad(*details); | |
| 1577 | |
| 1578 delegate_->NotifyNavigationStateChanged(kInvalidateAll); | |
| 1579 delegate_->NotifyNavigationEntryCommitted(*details); | |
| 1580 | |
| 1581 // TODO(avi): Remove. http://crbug.com/170921 | |
| 1582 NotificationDetails notification_details = | |
| 1583 Details<LoadCommittedDetails>(details); | |
| 1584 NotificationService::current()->Notify( | |
| 1585 NOTIFICATION_NAV_ENTRY_COMMITTED, | |
| 1586 Source<NavigationController>(this), | |
| 1587 notification_details); | |
| 1588 } | |
| 1589 | |
| 1590 // static | |
| 1591 size_t NavigationControllerImpl::max_entry_count() { | |
| 1592 if (max_entry_count_for_testing_ != kMaxEntryCountForTestingNotSet) | |
| 1593 return max_entry_count_for_testing_; | |
| 1594 return kMaxSessionHistoryEntries; | |
| 1595 } | |
| 1596 | |
| 1597 void NavigationControllerImpl::SetActive(bool is_active) { | |
| 1598 if (is_active && needs_reload_) | |
| 1599 LoadIfNecessary(); | |
| 1600 } | |
| 1601 | |
| 1602 void NavigationControllerImpl::LoadIfNecessary() { | |
| 1603 if (!needs_reload_) | |
| 1604 return; | |
| 1605 | |
| 1606 // Calling Reload() results in ignoring state, and not loading. | |
| 1607 // Explicitly use NavigateToPendingEntry so that the renderer uses the | |
| 1608 // cached state. | |
| 1609 pending_entry_index_ = last_committed_entry_index_; | |
| 1610 NavigateToPendingEntry(NO_RELOAD); | |
| 1611 } | |
| 1612 | |
| 1613 void NavigationControllerImpl::NotifyEntryChanged(const NavigationEntry* entry, | |
| 1614 int index) { | |
| 1615 EntryChangedDetails det; | |
| 1616 det.changed_entry = entry; | |
| 1617 det.index = index; | |
| 1618 NotificationService::current()->Notify( | |
| 1619 NOTIFICATION_NAV_ENTRY_CHANGED, | |
| 1620 Source<NavigationController>(this), | |
| 1621 Details<EntryChangedDetails>(&det)); | |
| 1622 } | |
| 1623 | |
| 1624 void NavigationControllerImpl::FinishRestore(int selected_index, | |
| 1625 RestoreType type) { | |
| 1626 DCHECK(selected_index >= 0 && selected_index < GetEntryCount()); | |
| 1627 ConfigureEntriesForRestore(&entries_, type); | |
| 1628 | |
| 1629 SetMaxRestoredPageID(static_cast<int32>(GetEntryCount())); | |
| 1630 | |
| 1631 last_committed_entry_index_ = selected_index; | |
| 1632 } | |
| 1633 | |
| 1634 void NavigationControllerImpl::DiscardNonCommittedEntriesInternal() { | |
| 1635 DiscardPendingEntry(); | |
| 1636 DiscardTransientEntry(); | |
| 1637 } | |
| 1638 | |
| 1639 void NavigationControllerImpl::DiscardPendingEntry() { | |
| 1640 if (pending_entry_index_ == -1) | |
| 1641 delete pending_entry_; | |
| 1642 pending_entry_ = NULL; | |
| 1643 pending_entry_index_ = -1; | |
| 1644 } | |
| 1645 | |
| 1646 void NavigationControllerImpl::DiscardTransientEntry() { | |
| 1647 if (transient_entry_index_ == -1) | |
| 1648 return; | |
| 1649 entries_.erase(entries_.begin() + transient_entry_index_); | |
| 1650 if (last_committed_entry_index_ > transient_entry_index_) | |
| 1651 last_committed_entry_index_--; | |
| 1652 transient_entry_index_ = -1; | |
| 1653 } | |
| 1654 | |
| 1655 int NavigationControllerImpl::GetEntryIndexWithPageID( | |
| 1656 SiteInstance* instance, int32 page_id) const { | |
| 1657 for (int i = static_cast<int>(entries_.size()) - 1; i >= 0; --i) { | |
| 1658 if ((entries_[i]->site_instance() == instance) && | |
| 1659 (entries_[i]->GetPageID() == page_id)) | |
| 1660 return i; | |
| 1661 } | |
| 1662 return -1; | |
| 1663 } | |
| 1664 | |
| 1665 NavigationEntry* NavigationControllerImpl::GetTransientEntry() const { | |
| 1666 if (transient_entry_index_ == -1) | |
| 1667 return NULL; | |
| 1668 return entries_[transient_entry_index_].get(); | |
| 1669 } | |
| 1670 | |
| 1671 void NavigationControllerImpl::SetTransientEntry(NavigationEntry* entry) { | |
| 1672 // Discard any current transient entry, we can only have one at a time. | |
| 1673 int index = 0; | |
| 1674 if (last_committed_entry_index_ != -1) | |
| 1675 index = last_committed_entry_index_ + 1; | |
| 1676 DiscardTransientEntry(); | |
| 1677 entries_.insert( | |
| 1678 entries_.begin() + index, linked_ptr<NavigationEntryImpl>( | |
| 1679 NavigationEntryImpl::FromNavigationEntry(entry))); | |
| 1680 transient_entry_index_ = index; | |
| 1681 delegate_->NotifyNavigationStateChanged(kInvalidateAll); | |
| 1682 } | |
| 1683 | |
| 1684 void NavigationControllerImpl::InsertEntriesFrom( | |
| 1685 const NavigationControllerImpl& source, | |
| 1686 int max_index) { | |
| 1687 DCHECK_LE(max_index, source.GetEntryCount()); | |
| 1688 size_t insert_index = 0; | |
| 1689 for (int i = 0; i < max_index; i++) { | |
| 1690 // When cloning a tab, copy all entries except interstitial pages | |
| 1691 if (source.entries_[i].get()->GetPageType() != | |
| 1692 PAGE_TYPE_INTERSTITIAL) { | |
| 1693 entries_.insert(entries_.begin() + insert_index++, | |
| 1694 linked_ptr<NavigationEntryImpl>( | |
| 1695 new NavigationEntryImpl(*source.entries_[i]))); | |
| 1696 } | |
| 1697 } | |
| 1698 } | |
| 1699 | |
| 1700 void NavigationControllerImpl::SetGetTimestampCallbackForTest( | |
| 1701 const base::Callback<base::Time()>& get_timestamp_callback) { | |
| 1702 get_timestamp_callback_ = get_timestamp_callback; | |
| 1703 } | |
| 1704 | |
| 1705 } // namespace content | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 49823002:
Move navigation and frame tree classes to a new frame_host/ directory. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src