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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/tab_contents/render_view_host_manager.h" | |
| 6 | |
| 7 #include <utility> | |
| 8 | |
| 9 #include "base/command_line.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "content/browser/debugger/devtools_manager_impl.h" | |
| 12 #include "content/browser/renderer_host/render_view_host_factory.h" | |
| 13 #include "content/browser/renderer_host/render_view_host_impl.h" | |
| 14 #include "content/browser/site_instance_impl.h" | |
| 15 #include "content/browser/web_contents/navigation_controller_impl.h" | |
| 16 #include "content/browser/web_contents/navigation_entry_impl.h" | |
| 17 #include "content/browser/webui/web_ui_impl.h" | |
| 18 #include "content/common/view_messages.h" | |
| 19 #include "content/port/browser/render_widget_host_view_port.h" | |
| 20 #include "content/public/browser/content_browser_client.h" | |
| 21 #include "content/public/browser/notification_service.h" | |
| 22 #include "content/public/browser/notification_types.h" | |
| 23 #include "content/public/browser/render_view_host_delegate.h" | |
| 24 #include "content/public/browser/web_contents_view.h" | |
| 25 #include "content/public/browser/web_ui_controller.h" | |
| 26 #include "content/public/browser/web_ui_controller_factory.h" | |
| 27 #include "content/public/common/content_switches.h" | |
| 28 #include "content/public/common/url_constants.h" | |
| 29 | |
| 30 using content::NavigationController; | |
| 31 using content::NavigationEntry; | |
| 32 using content::NavigationEntryImpl; | |
| 33 using content::RenderViewHost; | |
| 34 using content::RenderViewHostImpl; | |
| 35 using content::RenderWidgetHostView; | |
| 36 using content::RenderWidgetHostViewPort; | |
| 37 using content::SiteInstance; | |
| 38 using content::WebUIControllerFactory; | |
| 39 | |
| 40 RenderViewHostManager::RenderViewHostManager( | |
| 41 content::RenderViewHostDelegate* render_view_delegate, | |
| 42 Delegate* delegate) | |
| 43 : delegate_(delegate), | |
| 44 cross_navigation_pending_(false), | |
| 45 render_view_delegate_(render_view_delegate), | |
| 46 render_view_host_(NULL), | |
| 47 pending_render_view_host_(NULL), | |
| 48 interstitial_page_(NULL) { | |
| 49 } | |
| 50 | |
| 51 RenderViewHostManager::~RenderViewHostManager() { | |
| 52 if (pending_render_view_host_) | |
| 53 CancelPending(); | |
| 54 | |
| 55 // We should always have a main RenderViewHost. | |
| 56 RenderViewHostImpl* render_view_host = render_view_host_; | |
| 57 render_view_host_ = NULL; | |
| 58 render_view_host->Shutdown(); | |
| 59 | |
| 60 // Shut down any swapped out RenderViewHosts. | |
| 61 for (RenderViewHostMap::iterator iter = swapped_out_hosts_.begin(); | |
| 62 iter != swapped_out_hosts_.end(); | |
| 63 ++iter) { | |
| 64 iter->second->Shutdown(); | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 void RenderViewHostManager::Init(content::BrowserContext* browser_context, | |
| 69 SiteInstance* site_instance, | |
| 70 int routing_id) { | |
| 71 // Create a RenderViewHost, once we have an instance. It is important to | |
| 72 // immediately give this SiteInstance to a RenderViewHost so that it is | |
| 73 // ref counted. | |
| 74 if (!site_instance) | |
| 75 site_instance = SiteInstance::Create(browser_context); | |
| 76 render_view_host_ = static_cast<RenderViewHostImpl*>( | |
| 77 RenderViewHostFactory::Create( | |
| 78 site_instance, render_view_delegate_, routing_id, delegate_-> | |
| 79 GetControllerForRenderManager().GetSessionStorageNamespace())); | |
| 80 | |
| 81 // Keep track of renderer processes as they start to shut down. | |
| 82 registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSING, | |
| 83 content::NotificationService::AllSources()); | |
| 84 } | |
| 85 | |
| 86 RenderViewHostImpl* RenderViewHostManager::current_host() const { | |
| 87 return render_view_host_; | |
| 88 } | |
| 89 | |
| 90 RenderViewHostImpl* RenderViewHostManager::pending_render_view_host() const { | |
| 91 return pending_render_view_host_; | |
| 92 } | |
| 93 | |
| 94 RenderWidgetHostView* RenderViewHostManager::GetRenderWidgetHostView() const { | |
| 95 if (!render_view_host_) | |
| 96 return NULL; | |
| 97 return render_view_host_->GetView(); | |
| 98 } | |
| 99 | |
| 100 RenderViewHostImpl* RenderViewHostManager::Navigate( | |
| 101 const NavigationEntryImpl& entry) { | |
| 102 // Create a pending RenderViewHost. It will give us the one we should use | |
| 103 RenderViewHostImpl* dest_render_view_host = | |
| 104 static_cast<RenderViewHostImpl*>(UpdateRendererStateForNavigate(entry)); | |
| 105 if (!dest_render_view_host) | |
| 106 return NULL; // We weren't able to create a pending render view host. | |
| 107 | |
| 108 // If the current render_view_host_ isn't live, we should create it so | |
| 109 // that we don't show a sad tab while the dest_render_view_host fetches | |
| 110 // its first page. (Bug 1145340) | |
| 111 if (dest_render_view_host != render_view_host_ && | |
| 112 !render_view_host_->IsRenderViewLive()) { | |
| 113 // Note: we don't call InitRenderView here because we are navigating away | |
| 114 // soon anyway, and we don't have the NavigationEntry for this host. | |
| 115 delegate_->CreateRenderViewForRenderManager(render_view_host_); | |
| 116 } | |
| 117 | |
| 118 // If the renderer crashed, then try to create a new one to satisfy this | |
| 119 // navigation request. | |
| 120 if (!dest_render_view_host->IsRenderViewLive()) { | |
| 121 if (!InitRenderView(dest_render_view_host, entry)) | |
| 122 return NULL; | |
| 123 | |
| 124 // Now that we've created a new renderer, be sure to hide it if it isn't | |
| 125 // our primary one. Otherwise, we might crash if we try to call Show() | |
| 126 // on it later. | |
| 127 if (dest_render_view_host != render_view_host_ && | |
| 128 dest_render_view_host->GetView()) { | |
| 129 dest_render_view_host->GetView()->Hide(); | |
| 130 } else { | |
| 131 // This is our primary renderer, notify here as we won't be calling | |
| 132 // CommitPending (which does the notify). | |
| 133 RenderViewHost* null_rvh = NULL; | |
| 134 std::pair<RenderViewHost*, RenderViewHost*> details = | |
| 135 std::make_pair(null_rvh, render_view_host_); | |
| 136 content::NotificationService::current()->Notify( | |
| 137 content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED, | |
| 138 content::Source<NavigationController>( | |
| 139 &delegate_->GetControllerForRenderManager()), | |
| 140 content::Details<std::pair<RenderViewHost*, RenderViewHost*> >( | |
| 141 &details)); | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 return dest_render_view_host; | |
| 146 } | |
| 147 | |
| 148 void RenderViewHostManager::Stop() { | |
| 149 render_view_host_->Stop(); | |
| 150 | |
| 151 // If we are cross-navigating, we should stop the pending renderers. This | |
| 152 // will lead to a DidFailProvisionalLoad, which will properly destroy them. | |
| 153 if (cross_navigation_pending_) { | |
| 154 pending_render_view_host_->Send( | |
| 155 new ViewMsg_Stop(pending_render_view_host_->GetRoutingID())); | |
| 156 } | |
| 157 } | |
| 158 | |
| 159 void RenderViewHostManager::SetIsLoading(bool is_loading) { | |
| 160 render_view_host_->SetIsLoading(is_loading); | |
| 161 if (pending_render_view_host_) | |
| 162 pending_render_view_host_->SetIsLoading(is_loading); | |
| 163 } | |
| 164 | |
| 165 bool RenderViewHostManager::ShouldCloseTabOnUnresponsiveRenderer() { | |
| 166 if (!cross_navigation_pending_) | |
| 167 return true; | |
| 168 | |
| 169 // If the tab becomes unresponsive during unload while doing a | |
| 170 // cross-site navigation, proceed with the navigation. (This assumes that | |
| 171 // the pending RenderViewHost is still responsive.) | |
| 172 int pending_request_id = pending_render_view_host_->GetPendingRequestId(); | |
| 173 if (pending_request_id == -1) { | |
| 174 // Haven't gotten around to starting the request, because we're still | |
| 175 // waiting for the beforeunload handler to finish. We'll pretend that it | |
| 176 // did finish, to let the navigation proceed. Note that there's a danger | |
| 177 // that the beforeunload handler will later finish and possibly return | |
| 178 // false (meaning the navigation should not proceed), but we'll ignore it | |
| 179 // in this case because it took too long. | |
| 180 if (pending_render_view_host_->are_navigations_suspended()) | |
| 181 pending_render_view_host_->SetNavigationsSuspended(false); | |
| 182 } else { | |
| 183 // The request has been started and paused while we're waiting for the | |
| 184 // unload handler to finish. We'll pretend that it did, by notifying the | |
| 185 // IO thread to let the response continue. The pending renderer will then | |
| 186 // be swapped in as part of the usual DidNavigate logic. (If the unload | |
| 187 // handler later finishes, this call will be ignored because the state in | |
| 188 // CrossSiteResourceHandler will already be cleaned up.) | |
| 189 ViewMsg_SwapOut_Params params; | |
| 190 params.new_render_process_host_id = | |
| 191 pending_render_view_host_->GetProcess()->GetID(); | |
| 192 params.new_request_id = pending_request_id; | |
| 193 current_host()->GetProcess()->CrossSiteSwapOutACK(params); | |
| 194 } | |
| 195 return false; | |
| 196 } | |
| 197 | |
| 198 void RenderViewHostManager::DidNavigateMainFrame( | |
| 199 RenderViewHost* render_view_host) { | |
| 200 if (!cross_navigation_pending_) { | |
| 201 DCHECK(!pending_render_view_host_); | |
| 202 | |
| 203 // We should only hear this from our current renderer. | |
| 204 DCHECK(render_view_host == render_view_host_); | |
| 205 | |
| 206 // Even when there is no pending RVH, there may be a pending Web UI. | |
| 207 if (pending_web_ui_.get()) | |
| 208 CommitPending(); | |
| 209 return; | |
| 210 } | |
| 211 | |
| 212 if (render_view_host == pending_render_view_host_) { | |
| 213 // The pending cross-site navigation completed, so show the renderer. | |
| 214 // If it committed without sending network requests (e.g., data URLs), | |
| 215 // then we still need to swap out the old RVH first and run its unload | |
| 216 // handler. OK for that to happen in the background. | |
| 217 if (pending_render_view_host_->GetPendingRequestId() == -1) { | |
| 218 OnCrossSiteResponse(pending_render_view_host_->GetProcess()->GetID(), | |
| 219 pending_render_view_host_->GetRoutingID()); | |
| 220 } | |
| 221 | |
| 222 CommitPending(); | |
| 223 cross_navigation_pending_ = false; | |
| 224 } else if (render_view_host == render_view_host_) { | |
| 225 // A navigation in the original page has taken place. Cancel the pending | |
| 226 // one. | |
| 227 CancelPending(); | |
| 228 cross_navigation_pending_ = false; | |
| 229 } else { | |
| 230 // No one else should be sending us DidNavigate in this state. | |
| 231 DCHECK(false); | |
| 232 } | |
| 233 } | |
| 234 | |
| 235 void RenderViewHostManager::SetWebUIPostCommit(WebUIImpl* web_ui) { | |
| 236 DCHECK(!web_ui_.get()); | |
| 237 web_ui_.reset(web_ui); | |
| 238 } | |
| 239 | |
| 240 void RenderViewHostManager::RendererAbortedProvisionalLoad( | |
| 241 RenderViewHost* render_view_host) { | |
| 242 // We used to cancel the pending renderer here for cross-site downloads. | |
| 243 // However, it's not safe to do that because the download logic repeatedly | |
| 244 // looks for this TabContents based on a render view ID. Instead, we just | |
| 245 // leave the pending renderer around until the next navigation event | |
| 246 // (Navigate, DidNavigate, etc), which will clean it up properly. | |
| 247 // TODO(creis): All of this will go away when we move the cross-site logic | |
| 248 // to ResourceDispatcherHost, so that we intercept responses rather than | |
| 249 // navigation events. (That's necessary to support onunload anyway.) Once | |
| 250 // we've made that change, we won't create a pending renderer until we know | |
| 251 // the response is not a download. | |
| 252 } | |
| 253 | |
| 254 void RenderViewHostManager::RendererProcessClosing( | |
| 255 content::RenderProcessHost* render_process_host) { | |
| 256 // Remove any swapped out RVHs from this process, so that we don't try to | |
| 257 // swap them back in while the process is exiting. Start by finding them, | |
| 258 // since there could be more than one. | |
| 259 std::list<int> ids_to_remove; | |
| 260 for (RenderViewHostMap::iterator iter = swapped_out_hosts_.begin(); | |
| 261 iter != swapped_out_hosts_.end(); | |
| 262 ++iter) { | |
| 263 if (iter->second->GetProcess() == render_process_host) | |
| 264 ids_to_remove.push_back(iter->first); | |
| 265 } | |
| 266 | |
| 267 // Now delete them. | |
| 268 while (!ids_to_remove.empty()) { | |
| 269 swapped_out_hosts_[ids_to_remove.back()]->Shutdown(); | |
| 270 swapped_out_hosts_.erase(ids_to_remove.back()); | |
| 271 ids_to_remove.pop_back(); | |
| 272 } | |
| 273 } | |
| 274 | |
| 275 void RenderViewHostManager::ShouldClosePage( | |
| 276 bool for_cross_site_transition, | |
| 277 bool proceed, | |
| 278 const base::TimeTicks& proceed_time) { | |
| 279 if (for_cross_site_transition) { | |
| 280 // Ignore if we're not in a cross-site navigation. | |
| 281 if (!cross_navigation_pending_) | |
| 282 return; | |
| 283 | |
| 284 if (proceed) { | |
| 285 // Ok to unload the current page, so proceed with the cross-site | |
| 286 // navigation. Note that if navigations are not currently suspended, it | |
| 287 // might be because the renderer was deemed unresponsive and this call was | |
| 288 // already made by ShouldCloseTabOnUnresponsiveRenderer. In that case, it | |
| 289 // is ok to do nothing here. | |
| 290 if (pending_render_view_host_ && | |
| 291 pending_render_view_host_->are_navigations_suspended()) { | |
| 292 pending_render_view_host_->SetNavigationsSuspended(false); | |
| 293 if (!proceed_time.is_null()) { | |
| 294 pending_render_view_host_->SetNavigationStartTime(proceed_time); | |
| 295 } | |
| 296 } | |
| 297 } else { | |
| 298 // Current page says to cancel. | |
| 299 CancelPending(); | |
| 300 cross_navigation_pending_ = false; | |
| 301 } | |
| 302 } else { | |
| 303 // Non-cross site transition means closing the entire tab. | |
| 304 bool proceed_to_fire_unload; | |
| 305 delegate_->BeforeUnloadFiredFromRenderManager(proceed, | |
| 306 &proceed_to_fire_unload); | |
| 307 | |
| 308 if (proceed_to_fire_unload) { | |
| 309 // This is not a cross-site navigation, the tab is being closed. | |
| 310 render_view_host_->ClosePage(); | |
| 311 } | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 void RenderViewHostManager::OnCrossSiteResponse(int new_render_process_host_id, | |
| 316 int new_request_id) { | |
| 317 // Should only see this while we have a pending renderer. | |
| 318 if (!cross_navigation_pending_) | |
| 319 return; | |
| 320 DCHECK(pending_render_view_host_); | |
| 321 | |
| 322 // Tell the old renderer it is being swapped out. This will fire the unload | |
| 323 // handler (without firing the beforeunload handler a second time). When the | |
| 324 // unload handler finishes and the navigation completes, we will send a | |
| 325 // message to the ResourceDispatcherHost with the given pending request IDs, | |
| 326 // allowing the pending RVH's response to resume. | |
| 327 render_view_host_->SwapOut(new_render_process_host_id, new_request_id); | |
| 328 | |
| 329 // ResourceDispatcherHost has told us to run the onunload handler, which | |
| 330 // means it is not a download or unsafe page, and we are going to perform the | |
| 331 // navigation. Thus, we no longer need to remember that the RenderViewHost | |
| 332 // is part of a pending cross-site request. | |
| 333 pending_render_view_host_->SetHasPendingCrossSiteRequest(false, | |
| 334 new_request_id); | |
| 335 } | |
| 336 | |
| 337 void RenderViewHostManager::Observe( | |
| 338 int type, | |
| 339 const content::NotificationSource& source, | |
| 340 const content::NotificationDetails& details) { | |
| 341 switch (type) { | |
| 342 case content::NOTIFICATION_RENDERER_PROCESS_CLOSING: | |
| 343 RendererProcessClosing( | |
| 344 content::Source<content::RenderProcessHost>(source).ptr()); | |
| 345 break; | |
| 346 | |
| 347 default: | |
| 348 NOTREACHED(); | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 bool RenderViewHostManager::ShouldTransitionCrossSite() { | |
| 353 // True if we are using process-per-site-instance (default) or | |
| 354 // process-per-site (kProcessPerSite). | |
| 355 return !CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessPerTab); | |
| 356 } | |
| 357 | |
| 358 bool RenderViewHostManager::ShouldSwapProcessesForNavigation( | |
| 359 const NavigationEntry* cur_entry, | |
| 360 const NavigationEntryImpl* new_entry) const { | |
| 361 DCHECK(new_entry); | |
| 362 | |
| 363 // Check for reasons to swap processes even if we are in a process model that | |
| 364 // doesn't usually swap (e.g., process-per-tab). | |
| 365 | |
| 366 // For security, we should transition between processes when one is a Web UI | |
| 367 // page and one isn't. If there's no cur_entry, check the current RVH's | |
| 368 // site, which might already be committed to a Web UI URL (such as the NTP). | |
| 369 const GURL& current_url = (cur_entry) ? cur_entry->GetURL() : | |
| 370 render_view_host_->GetSiteInstance()->GetSite(); | |
| 371 content::BrowserContext* browser_context = | |
| 372 delegate_->GetControllerForRenderManager().GetBrowserContext(); | |
| 373 const WebUIControllerFactory* web_ui_factory = | |
| 374 content::GetContentClient()->browser()->GetWebUIControllerFactory(); | |
| 375 if (web_ui_factory) { | |
| 376 if (web_ui_factory->UseWebUIForURL(browser_context, current_url)) { | |
| 377 // Force swap if it's not an acceptable URL for Web UI. | |
| 378 if (!web_ui_factory->IsURLAcceptableForWebUI(browser_context, | |
| 379 new_entry->GetURL())) | |
| 380 return true; | |
| 381 } else { | |
| 382 // Force swap if it's a Web UI URL. | |
| 383 if (web_ui_factory->UseWebUIForURL(browser_context, new_entry->GetURL())) | |
| 384 return true; | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 if (content::GetContentClient()->browser()->ShouldSwapProcessesForNavigation( | |
| 389 cur_entry ? cur_entry->GetURL() : GURL(), new_entry->GetURL())) { | |
| 390 return true; | |
| 391 } | |
| 392 | |
| 393 if (!cur_entry) | |
| 394 return false; | |
| 395 | |
| 396 // We can't switch a RenderView between view source and non-view source mode | |
| 397 // without screwing up the session history sometimes (when navigating between | |
| 398 // "view-source:http://foo.com/" and "http://foo.com/", WebKit doesn't treat | |
| 399 // it as a new navigation). So require a view switch. | |
| 400 if (cur_entry->IsViewSourceMode() != new_entry->IsViewSourceMode()) | |
| 401 return true; | |
| 402 | |
| 403 return false; | |
| 404 } | |
| 405 | |
| 406 SiteInstance* RenderViewHostManager::GetSiteInstanceForEntry( | |
| 407 const NavigationEntryImpl& entry, | |
| 408 SiteInstance* curr_instance) { | |
| 409 // NOTE: This is only called when ShouldTransitionCrossSite is true. | |
| 410 | |
| 411 const GURL& dest_url = entry.GetURL(); | |
| 412 NavigationControllerImpl& controller = | |
| 413 delegate_->GetControllerForRenderManager(); | |
| 414 content::BrowserContext* browser_context = controller.GetBrowserContext(); | |
| 415 | |
| 416 // If the entry has an instance already we should use it. | |
| 417 if (entry.site_instance()) | |
| 418 return entry.site_instance(); | |
| 419 | |
| 420 // (UGLY) HEURISTIC, process-per-site only: | |
| 421 // | |
| 422 // If this navigation is generated, then it probably corresponds to a search | |
| 423 // query. Given that search results typically lead to users navigating to | |
| 424 // other sites, we don't really want to use the search engine hostname to | |
| 425 // determine the site instance for this navigation. | |
| 426 // | |
| 427 // NOTE: This can be removed once we have a way to transition between | |
| 428 // RenderViews in response to a link click. | |
| 429 // | |
| 430 if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessPerSite) && | |
| 431 entry.GetTransitionType() == content::PAGE_TRANSITION_GENERATED) | |
| 432 return curr_instance; | |
| 433 | |
| 434 SiteInstanceImpl* curr_site_instance = | |
| 435 static_cast<SiteInstanceImpl*>(curr_instance); | |
| 436 | |
| 437 // If we haven't used our SiteInstance (and thus RVH) yet, then we can use it | |
| 438 // for this entry. We won't commit the SiteInstance to this site until the | |
| 439 // navigation commits (in DidNavigate), unless the navigation entry was | |
| 440 // restored or it's a Web UI as described below. | |
| 441 if (!curr_site_instance->HasSite()) { | |
| 442 // If we've already created a SiteInstance for our destination, we don't | |
| 443 // want to use this unused SiteInstance; use the existing one. (We don't | |
| 444 // do this check if the curr_instance has a site, because for now, we want | |
| 445 // to compare against the current URL and not the SiteInstance's site. In | |
| 446 // this case, there is no current URL, so comparing against the site is ok. | |
| 447 // See additional comments below.) | |
| 448 if (curr_site_instance->HasRelatedSiteInstance(dest_url)) | |
| 449 return curr_site_instance->GetRelatedSiteInstance(dest_url); | |
| 450 | |
| 451 // For extensions, Web UI URLs (such as the new tab page), and apps we do | |
| 452 // not want to use the curr_instance if it has no site, since it will have a | |
| 453 // RenderProcessHost of PRIV_NORMAL. Create a new SiteInstance for this | |
| 454 // URL instead (with the correct process type). | |
| 455 if (curr_site_instance->HasWrongProcessForURL(dest_url)) | |
| 456 return curr_site_instance->GetRelatedSiteInstance(dest_url); | |
| 457 | |
| 458 // Normally the "site" on the SiteInstance is set lazily when the load | |
| 459 // actually commits. This is to support better process sharing in case | |
| 460 // the site redirects to some other site: we want to use the destination | |
| 461 // site in the site instance. | |
| 462 // | |
| 463 // In the case of session restore, as it loads all the pages immediately | |
| 464 // we need to set the site first, otherwise after a restore none of the | |
| 465 // pages would share renderers in process-per-site. | |
| 466 if (entry.restore_type() != NavigationEntryImpl::RESTORE_NONE) | |
| 467 curr_site_instance->SetSite(dest_url); | |
| 468 | |
| 469 return curr_site_instance; | |
| 470 } | |
| 471 | |
| 472 // Otherwise, only create a new SiteInstance for cross-site navigation. | |
| 473 | |
| 474 // TODO(creis): Once we intercept links and script-based navigations, we | |
| 475 // will be able to enforce that all entries in a SiteInstance actually have | |
| 476 // the same site, and it will be safe to compare the URL against the | |
| 477 // SiteInstance's site, as follows: | |
| 478 // const GURL& current_url = curr_instance->site(); | |
| 479 // For now, though, we're in a hybrid model where you only switch | |
| 480 // SiteInstances if you type in a cross-site URL. This means we have to | |
| 481 // compare the entry's URL to the last committed entry's URL. | |
| 482 NavigationEntry* curr_entry = controller.GetLastCommittedEntry(); | |
| 483 if (interstitial_page_) { | |
| 484 // The interstitial is currently the last committed entry, but we want to | |
| 485 // compare against the last non-interstitial entry. | |
| 486 curr_entry = controller.GetEntryAtOffset(-1); | |
| 487 } | |
| 488 // If there is no last non-interstitial entry (and curr_instance already | |
| 489 // has a site), then we must have been opened from another tab. We want | |
| 490 // to compare against the URL of the page that opened us, but we can't | |
| 491 // get to it directly. The best we can do is check against the site of | |
| 492 // the SiteInstance. This will be correct when we intercept links and | |
| 493 // script-based navigations, but for now, it could place some pages in a | |
| 494 // new process unnecessarily. We should only hit this case if a page tries | |
| 495 // to open a new tab to an interstitial-inducing URL, and then navigates | |
| 496 // the page to a different same-site URL. (This seems very unlikely in | |
| 497 // practice.) | |
| 498 const GURL& current_url = (curr_entry) ? curr_entry->GetURL() : | |
| 499 curr_instance->GetSite(); | |
| 500 | |
| 501 // Use the current SiteInstance for same site navigations, as long as the | |
| 502 // process type is correct. (The URL may have been installed as an app since | |
| 503 // the last time we visited it.) | |
| 504 if (SiteInstance::IsSameWebSite(browser_context, current_url, dest_url) && | |
| 505 !static_cast<SiteInstanceImpl*>(curr_instance)->HasWrongProcessForURL( | |
| 506 dest_url)) { | |
| 507 return curr_instance; | |
| 508 } else if (ShouldSwapProcessesForNavigation(curr_entry, &entry)) { | |
| 509 // When we're swapping, we need to force the site instance AND browsing | |
| 510 // instance to be different ones. This addresses special cases where we use | |
| 511 // a single BrowsingInstance for all pages of a certain type (e.g., New Tab | |
| 512 // Pages), keeping them in the same process. When you navigate away from | |
| 513 // that page, we want to explicity ignore that BrowsingInstance and group | |
| 514 // this page into the appropriate SiteInstance for its URL. | |
| 515 return SiteInstance::CreateForURL(browser_context, dest_url); | |
| 516 } else { | |
| 517 // Start the new renderer in a new SiteInstance, but in the current | |
| 518 // BrowsingInstance. It is important to immediately give this new | |
| 519 // SiteInstance to a RenderViewHost (if it is different than our current | |
| 520 // SiteInstance), so that it is ref counted. This will happen in | |
| 521 // CreatePendingRenderView. | |
| 522 return curr_instance->GetRelatedSiteInstance(dest_url); | |
| 523 } | |
| 524 } | |
| 525 | |
| 526 bool RenderViewHostManager::CreatePendingRenderView( | |
| 527 const NavigationEntryImpl& entry, SiteInstance* instance) { | |
| 528 NavigationEntry* curr_entry = | |
| 529 delegate_->GetControllerForRenderManager().GetLastCommittedEntry(); | |
| 530 if (curr_entry) { | |
| 531 DCHECK(!curr_entry->GetContentState().empty()); | |
| 532 // TODO(creis): Should send a message to the RenderView to let it know | |
| 533 // we're about to switch away, so that it sends an UpdateState message. | |
| 534 } | |
| 535 | |
| 536 // Check if we've already created an RVH for this SiteInstance. | |
| 537 CHECK(instance); | |
| 538 RenderViewHostMap::iterator iter = | |
| 539 swapped_out_hosts_.find(instance->GetId()); | |
| 540 if (iter != swapped_out_hosts_.end()) { | |
| 541 // Re-use the existing RenderViewHost, which has already been initialized. | |
| 542 // We'll remove it from the list of swapped out hosts if it commits. | |
| 543 pending_render_view_host_ = iter->second; | |
| 544 | |
| 545 // Prevent the process from exiting while we're trying to use it. | |
| 546 pending_render_view_host_->GetProcess()->AddPendingView(); | |
| 547 | |
| 548 return true; | |
| 549 } | |
| 550 | |
| 551 pending_render_view_host_ = static_cast<RenderViewHostImpl*>( | |
| 552 RenderViewHostFactory::Create( | |
| 553 instance, render_view_delegate_, MSG_ROUTING_NONE, delegate_-> | |
| 554 GetControllerForRenderManager().GetSessionStorageNamespace())); | |
| 555 | |
| 556 // Prevent the process from exiting while we're trying to use it. | |
| 557 pending_render_view_host_->GetProcess()->AddPendingView(); | |
| 558 | |
| 559 bool success = InitRenderView(pending_render_view_host_, entry); | |
| 560 if (success) { | |
| 561 // Don't show the view until we get a DidNavigate from it. | |
| 562 pending_render_view_host_->GetView()->Hide(); | |
| 563 } else { | |
| 564 CancelPending(); | |
| 565 } | |
| 566 return success; | |
| 567 } | |
| 568 | |
| 569 bool RenderViewHostManager::InitRenderView(RenderViewHost* render_view_host, | |
| 570 const NavigationEntryImpl& entry) { | |
| 571 // If the pending navigation is to a WebUI, tell the RenderView about any | |
| 572 // bindings it will need enabled. | |
| 573 if (pending_web_ui_.get()) | |
| 574 render_view_host->AllowBindings(pending_web_ui_->GetBindings()); | |
| 575 | |
| 576 return delegate_->CreateRenderViewForRenderManager(render_view_host); | |
| 577 } | |
| 578 | |
| 579 void RenderViewHostManager::CommitPending() { | |
| 580 // First check whether we're going to want to focus the location bar after | |
| 581 // this commit. We do this now because the navigation hasn't formally | |
| 582 // committed yet, so if we've already cleared |pending_web_ui_| the call chain | |
| 583 // this triggers won't be able to figure out what's going on. | |
| 584 bool will_focus_location_bar = delegate_->FocusLocationBarByDefault(); | |
| 585 | |
| 586 // Next commit the Web UI, if any. | |
| 587 web_ui_.swap(pending_web_ui_); | |
| 588 if (web_ui_.get() && pending_web_ui_.get() && !pending_render_view_host_) | |
| 589 web_ui_->GetController()->DidBecomeActiveForReusedRenderView(); | |
| 590 pending_web_ui_.reset(); | |
| 591 | |
| 592 // It's possible for the pending_render_view_host_ to be NULL when we aren't | |
| 593 // crossing process boundaries. If so, we just needed to handle the Web UI | |
| 594 // committing above and we're done. | |
| 595 if (!pending_render_view_host_) { | |
| 596 if (will_focus_location_bar) | |
| 597 delegate_->SetFocusToLocationBar(false); | |
| 598 return; | |
| 599 } | |
| 600 | |
| 601 // Remember if the page was focused so we can focus the new renderer in | |
| 602 // that case. | |
| 603 bool focus_render_view = !will_focus_location_bar && | |
| 604 render_view_host_->GetView() && render_view_host_->GetView()->HasFocus(); | |
| 605 | |
| 606 // Swap in the pending view and make it active. | |
| 607 RenderViewHostImpl* old_render_view_host = render_view_host_; | |
| 608 render_view_host_ = pending_render_view_host_; | |
| 609 pending_render_view_host_ = NULL; | |
| 610 | |
| 611 // The process will no longer try to exit, so we can decrement the count. | |
| 612 render_view_host_->GetProcess()->RemovePendingView(); | |
| 613 | |
| 614 // If the view is gone, then this RenderViewHost died while it was hidden. | |
| 615 // We ignored the RenderViewGone call at the time, so we should send it now | |
| 616 // to make sure the sad tab shows up, etc. | |
| 617 if (render_view_host_->GetView()) | |
| 618 render_view_host_->GetView()->Show(); | |
| 619 else | |
| 620 delegate_->RenderViewGoneFromRenderManager(render_view_host_); | |
| 621 | |
| 622 // Hide the old view now that the new one is visible. | |
| 623 if (old_render_view_host->GetView()) { | |
| 624 old_render_view_host->GetView()->Hide(); | |
| 625 old_render_view_host->WasSwappedOut(); | |
| 626 } | |
| 627 | |
| 628 // Make sure the size is up to date. (Fix for bug 1079768.) | |
| 629 delegate_->UpdateRenderViewSizeForRenderManager(); | |
| 630 | |
| 631 if (will_focus_location_bar) | |
| 632 delegate_->SetFocusToLocationBar(false); | |
| 633 else if (focus_render_view && render_view_host_->GetView()) | |
| 634 RenderWidgetHostViewPort::FromRWHV(render_view_host_->GetView())->Focus(); | |
| 635 | |
| 636 std::pair<RenderViewHost*, RenderViewHost*> details = | |
| 637 std::make_pair(old_render_view_host, render_view_host_); | |
| 638 content::NotificationService::current()->Notify( | |
| 639 content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED, | |
| 640 content::Source<NavigationController>( | |
| 641 &delegate_->GetControllerForRenderManager()), | |
| 642 content::Details<std::pair<RenderViewHost*, RenderViewHost*> >(&details)); | |
| 643 | |
| 644 // If the pending view was on the swapped out list, we can remove it. | |
| 645 swapped_out_hosts_.erase(render_view_host_->GetSiteInstance()->GetId()); | |
| 646 | |
| 647 // If the old RVH is live, we are swapping it out and should keep track of it | |
| 648 // in case we navigate back to it. | |
| 649 if (old_render_view_host->IsRenderViewLive()) { | |
| 650 DCHECK(old_render_view_host->is_swapped_out()); | |
| 651 // Temp fix for http://crbug.com/90867 until we do a better cleanup to make | |
| 652 // sure we don't get different rvh instances for the same site instance | |
| 653 // in the same rvhmgr. | |
| 654 // TODO(creis): Clean this up. | |
| 655 int32 old_site_instance_id = | |
| 656 old_render_view_host->GetSiteInstance()->GetId(); | |
| 657 RenderViewHostMap::iterator iter = | |
| 658 swapped_out_hosts_.find(old_site_instance_id); | |
| 659 if (iter != swapped_out_hosts_.end() && | |
| 660 iter->second != old_render_view_host) { | |
| 661 // Shutdown the RVH that will be replaced in the map to avoid a leak. | |
| 662 iter->second->Shutdown(); | |
| 663 } | |
| 664 swapped_out_hosts_[old_site_instance_id] = old_render_view_host; | |
| 665 } else { | |
| 666 old_render_view_host->Shutdown(); | |
| 667 } | |
| 668 | |
| 669 // Let the task manager know that we've swapped RenderViewHosts, since it | |
| 670 // might need to update its process groupings. | |
| 671 delegate_->NotifySwappedFromRenderManager(); | |
| 672 } | |
| 673 | |
| 674 RenderViewHostImpl* RenderViewHostManager::UpdateRendererStateForNavigate( | |
| 675 const NavigationEntryImpl& entry) { | |
| 676 // If we are cross-navigating, then we want to get back to normal and navigate | |
| 677 // as usual. | |
| 678 if (cross_navigation_pending_) { | |
| 679 if (pending_render_view_host_) | |
| 680 CancelPending(); | |
| 681 cross_navigation_pending_ = false; | |
| 682 } | |
| 683 | |
| 684 // This will possibly create (set to NULL) a Web UI object for the pending | |
| 685 // page. We'll use this later to give the page special access. This must | |
| 686 // happen before the new renderer is created below so it will get bindings. | |
| 687 // It must also happen after the above conditional call to CancelPending(), | |
| 688 // otherwise CancelPending may clear the pending_web_ui_ and the page will | |
| 689 // not have it's bindings set appropriately. | |
| 690 pending_web_ui_.reset(delegate_->CreateWebUIForRenderManager(entry.GetURL())); | |
| 691 | |
| 692 // render_view_host_ will not be deleted before the end of this method, so we | |
| 693 // don't have to worry about this SiteInstance's ref count dropping to zero. | |
| 694 SiteInstance* curr_instance = render_view_host_->GetSiteInstance(); | |
| 695 | |
| 696 // Determine if we need a new SiteInstance for this entry. | |
| 697 // Again, new_instance won't be deleted before the end of this method, so it | |
| 698 // is safe to use a normal pointer here. | |
| 699 SiteInstance* new_instance = curr_instance; | |
| 700 bool force_swap = ShouldSwapProcessesForNavigation( | |
| 701 delegate_->GetLastCommittedNavigationEntryForRenderManager(), &entry); | |
| 702 if (ShouldTransitionCrossSite() || force_swap) | |
| 703 new_instance = GetSiteInstanceForEntry(entry, curr_instance); | |
| 704 | |
| 705 if (new_instance != curr_instance || force_swap) { | |
| 706 // New SiteInstance. | |
| 707 DCHECK(!cross_navigation_pending_); | |
| 708 | |
| 709 // Create a pending RVH and navigate it. | |
| 710 bool success = CreatePendingRenderView(entry, new_instance); | |
| 711 if (!success) | |
| 712 return NULL; | |
| 713 | |
| 714 // Check if our current RVH is live before we set up a transition. | |
| 715 if (!render_view_host_->IsRenderViewLive()) { | |
| 716 if (!cross_navigation_pending_) { | |
| 717 // The current RVH is not live. There's no reason to sit around with a | |
| 718 // sad tab or a newly created RVH while we wait for the pending RVH to | |
| 719 // navigate. Just switch to the pending RVH now and go back to non | |
| 720 // cross-navigating (Note that we don't care about on{before}unload | |
| 721 // handlers if the current RVH isn't live.) | |
| 722 CommitPending(); | |
| 723 return render_view_host_; | |
| 724 } else { | |
| 725 NOTREACHED(); | |
| 726 return render_view_host_; | |
| 727 } | |
| 728 } | |
| 729 // Otherwise, it's safe to treat this as a pending cross-site transition. | |
| 730 | |
| 731 // Make sure the old render view stops, in case a load is in progress. | |
| 732 render_view_host_->Send( | |
| 733 new ViewMsg_Stop(render_view_host_->GetRoutingID())); | |
| 734 | |
| 735 // Suspend the new render view (i.e., don't let it send the cross-site | |
| 736 // Navigate message) until we hear back from the old renderer's | |
| 737 // onbeforeunload handler. If the handler returns false, we'll have to | |
| 738 // cancel the request. | |
| 739 DCHECK(!pending_render_view_host_->are_navigations_suspended()); | |
| 740 pending_render_view_host_->SetNavigationsSuspended(true); | |
| 741 | |
| 742 // Tell the CrossSiteRequestManager that this RVH has a pending cross-site | |
| 743 // request, so that ResourceDispatcherHost will know to tell us to run the | |
| 744 // old page's onunload handler before it sends the response. | |
| 745 pending_render_view_host_->SetHasPendingCrossSiteRequest(true, -1); | |
| 746 | |
| 747 // We now have a pending RVH. | |
| 748 DCHECK(!cross_navigation_pending_); | |
| 749 cross_navigation_pending_ = true; | |
| 750 | |
| 751 // Tell the old render view to run its onbeforeunload handler, since it | |
| 752 // doesn't otherwise know that the cross-site request is happening. This | |
| 753 // will trigger a call to ShouldClosePage with the reply. | |
| 754 render_view_host_->FirePageBeforeUnload(true); | |
| 755 | |
| 756 return pending_render_view_host_; | |
| 757 } else { | |
| 758 if (pending_web_ui_.get() && render_view_host_->IsRenderViewLive()) | |
| 759 pending_web_ui_->GetController()->RenderViewReused(render_view_host_); | |
| 760 | |
| 761 // The renderer can exit view source mode when any error or cancellation | |
| 762 // happen. We must overwrite to recover the mode. | |
| 763 if (entry.IsViewSourceMode()) { | |
| 764 render_view_host_->Send( | |
| 765 new ViewMsg_EnableViewSourceMode(render_view_host_->GetRoutingID())); | |
| 766 } | |
| 767 } | |
| 768 | |
| 769 // Same SiteInstance can be used. Navigate render_view_host_ if we are not | |
| 770 // cross navigating. | |
| 771 DCHECK(!cross_navigation_pending_); | |
| 772 return render_view_host_; | |
| 773 } | |
| 774 | |
| 775 void RenderViewHostManager::CancelPending() { | |
| 776 RenderViewHostImpl* pending_render_view_host = pending_render_view_host_; | |
| 777 pending_render_view_host_ = NULL; | |
| 778 | |
| 779 content::DevToolsManagerImpl::GetInstance()->OnCancelPendingNavigation( | |
| 780 pending_render_view_host, | |
| 781 render_view_host_); | |
| 782 | |
| 783 // We no longer need to prevent the process from exiting. | |
| 784 pending_render_view_host->GetProcess()->RemovePendingView(); | |
| 785 | |
| 786 // The pending RVH may already be on the swapped out list if we started to | |
| 787 // swap it back in and then canceled. If so, make sure it gets swapped out | |
| 788 // again. If it's not on the swapped out list (e.g., aborting a pending | |
| 789 // load), then it's safe to shut down. | |
| 790 if (IsSwappedOut(pending_render_view_host)) { | |
| 791 // Any currently suspended navigations are no longer needed. | |
| 792 pending_render_view_host->CancelSuspendedNavigations(); | |
| 793 | |
| 794 // We can pass -1,-1 because there is no pending response in the | |
| 795 // ResourceDispatcherHost to unpause. | |
| 796 pending_render_view_host->SwapOut(-1, -1); | |
| 797 } else { | |
| 798 // We won't be coming back, so shut this one down. | |
| 799 pending_render_view_host->Shutdown(); | |
| 800 } | |
| 801 | |
| 802 pending_web_ui_.reset(); | |
| 803 } | |
| 804 | |
| 805 void RenderViewHostManager::RenderViewDeleted(RenderViewHost* rvh) { | |
| 806 // We are doing this in order to work around and to track a crasher | |
| 807 // (http://crbug.com/23411) where it seems that pending_render_view_host_ is | |
| 808 // deleted (not sure from where) but not NULLed. | |
| 809 if (rvh == pending_render_view_host_) { | |
| 810 // If you hit this NOTREACHED, please report it in the following bug | |
| 811 // http://crbug.com/23411 Make sure to include what you were doing when it | |
| 812 // happened (navigating to a new page, closing a tab...) and if you can | |
| 813 // reproduce. | |
| 814 NOTREACHED(); | |
| 815 pending_render_view_host_ = NULL; | |
| 816 } | |
| 817 | |
| 818 // Make sure deleted RVHs are not kept in the swapped out list while we are | |
| 819 // still alive. (If render_view_host_ is null, we're already being deleted.) | |
| 820 if (!render_view_host_) | |
| 821 return; | |
| 822 // We can't look it up by SiteInstance ID, which may no longer be valid. | |
| 823 for (RenderViewHostMap::iterator iter = swapped_out_hosts_.begin(); | |
| 824 iter != swapped_out_hosts_.end(); | |
| 825 ++iter) { | |
| 826 if (iter->second == rvh) { | |
| 827 swapped_out_hosts_.erase(iter); | |
| 828 break; | |
| 829 } | |
| 830 } | |
| 831 } | |
| 832 | |
| 833 bool RenderViewHostManager::IsSwappedOut(RenderViewHost* rvh) { | |
| 834 if (!rvh->GetSiteInstance()) | |
| 835 return false; | |
| 836 | |
| 837 return swapped_out_hosts_.find(rvh->GetSiteInstance()->GetId()) != | |
| 838 swapped_out_hosts_.end(); | |
| 839 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 10024066:
TabContents -> WebContentsImpl, part 4. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src