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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/tab_contents/render_view_host_manager.h" | |
| 6 | |
| 7 #include "base/command_line.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "chrome/browser/extensions/extension_service.h" | |
| 10 #include "chrome/browser/profiles/profile.h" | |
| 11 #include "chrome/browser/renderer_host/render_view_host.h" | |
| 12 #include "chrome/browser/renderer_host/render_view_host_delegate.h" | |
| 13 #include "chrome/browser/renderer_host/render_view_host_factory.h" | |
| 14 #include "chrome/browser/renderer_host/render_widget_host_view.h" | |
| 15 #include "chrome/browser/renderer_host/site_instance.h" | |
| 16 #include "chrome/browser/tab_contents/navigation_controller.h" | |
| 17 #include "chrome/browser/tab_contents/navigation_entry.h" | |
| 18 #include "chrome/browser/tab_contents/tab_contents_view.h" | |
| 19 #include "chrome/browser/webui/web_ui.h" | |
| 20 #include "chrome/browser/webui/web_ui_factory.h" | |
| 21 #include "chrome/common/chrome_switches.h" | |
| 22 #include "chrome/common/notification_service.h" | |
| 23 #include "chrome/common/notification_type.h" | |
| 24 #include "chrome/common/render_messages.h" | |
| 25 #include "chrome/common/render_messages_params.h" | |
| 26 #include "chrome/common/url_constants.h" | |
| 27 | |
| 28 namespace base { | |
| 29 class WaitableEvent; | |
| 30 } | |
| 31 | |
| 32 RenderViewHostManager::RenderViewHostManager( | |
| 33 RenderViewHostDelegate* render_view_delegate, | |
| 34 Delegate* delegate) | |
| 35 : delegate_(delegate), | |
| 36 cross_navigation_pending_(false), | |
| 37 render_view_delegate_(render_view_delegate), | |
| 38 render_view_host_(NULL), | |
| 39 pending_render_view_host_(NULL), | |
| 40 interstitial_page_(NULL) { | |
| 41 } | |
| 42 | |
| 43 RenderViewHostManager::~RenderViewHostManager() { | |
| 44 if (pending_render_view_host_) | |
| 45 CancelPending(); | |
| 46 | |
| 47 // We should always have a main RenderViewHost. | |
| 48 RenderViewHost* render_view_host = render_view_host_; | |
| 49 render_view_host_ = NULL; | |
| 50 render_view_host->Shutdown(); | |
| 51 } | |
| 52 | |
| 53 void RenderViewHostManager::Init(Profile* profile, | |
| 54 SiteInstance* site_instance, | |
| 55 int routing_id) { | |
| 56 // Create a RenderViewHost, once we have an instance. It is important to | |
| 57 // immediately give this SiteInstance to a RenderViewHost so that it is | |
| 58 // ref counted. | |
| 59 if (!site_instance) | |
| 60 site_instance = SiteInstance::CreateSiteInstance(profile); | |
| 61 render_view_host_ = RenderViewHostFactory::Create( | |
| 62 site_instance, render_view_delegate_, routing_id, delegate_-> | |
| 63 GetControllerForRenderManager().session_storage_namespace()); | |
| 64 NotificationService::current()->Notify( | |
| 65 NotificationType::RENDER_VIEW_HOST_CREATED_FOR_TAB, | |
| 66 Source<RenderViewHostManager>(this), | |
| 67 Details<RenderViewHost>(render_view_host_)); | |
| 68 } | |
| 69 | |
| 70 RenderWidgetHostView* RenderViewHostManager::GetRenderWidgetHostView() const { | |
| 71 if (!render_view_host_) | |
| 72 return NULL; | |
| 73 return render_view_host_->view(); | |
| 74 } | |
| 75 | |
| 76 RenderViewHost* RenderViewHostManager::Navigate(const NavigationEntry& entry) { | |
| 77 // Create a pending RenderViewHost. It will give us the one we should use | |
| 78 RenderViewHost* dest_render_view_host = UpdateRendererStateForNavigate(entry); | |
| 79 if (!dest_render_view_host) | |
| 80 return NULL; // We weren't able to create a pending render view host. | |
| 81 | |
| 82 // If the current render_view_host_ isn't live, we should create it so | |
| 83 // that we don't show a sad tab while the dest_render_view_host fetches | |
| 84 // its first page. (Bug 1145340) | |
| 85 if (dest_render_view_host != render_view_host_ && | |
| 86 !render_view_host_->IsRenderViewLive()) { | |
| 87 // Note: we don't call InitRenderView here because we are navigating away | |
| 88 // soon anyway, and we don't have the NavigationEntry for this host. | |
| 89 delegate_->CreateRenderViewForRenderManager(render_view_host_); | |
| 90 } | |
| 91 | |
| 92 // If the renderer crashed, then try to create a new one to satisfy this | |
| 93 // navigation request. | |
| 94 if (!dest_render_view_host->IsRenderViewLive()) { | |
| 95 if (!InitRenderView(dest_render_view_host, entry)) | |
| 96 return NULL; | |
| 97 | |
| 98 // Now that we've created a new renderer, be sure to hide it if it isn't | |
| 99 // our primary one. Otherwise, we might crash if we try to call Show() | |
| 100 // on it later. | |
| 101 if (dest_render_view_host != render_view_host_ && | |
| 102 dest_render_view_host->view()) { | |
| 103 dest_render_view_host->view()->Hide(); | |
| 104 } else { | |
| 105 // This is our primary renderer, notify here as we won't be calling | |
| 106 // CommitPending (which does the notify). | |
| 107 RenderViewHostSwitchedDetails details; | |
| 108 details.new_host = render_view_host_; | |
| 109 details.old_host = NULL; | |
| 110 NotificationService::current()->Notify( | |
| 111 NotificationType::RENDER_VIEW_HOST_CHANGED, | |
| 112 Source<NavigationController>( | |
| 113 &delegate_->GetControllerForRenderManager()), | |
| 114 Details<RenderViewHostSwitchedDetails>(&details)); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 return dest_render_view_host; | |
| 119 } | |
| 120 | |
| 121 void RenderViewHostManager::Stop() { | |
| 122 render_view_host_->Stop(); | |
| 123 | |
| 124 // If we are cross-navigating, we should stop the pending renderers. This | |
| 125 // will lead to a DidFailProvisionalLoad, which will properly destroy them. | |
| 126 if (cross_navigation_pending_) | |
| 127 pending_render_view_host_->Stop(); | |
| 128 } | |
| 129 | |
| 130 void RenderViewHostManager::SetIsLoading(bool is_loading) { | |
| 131 render_view_host_->SetIsLoading(is_loading); | |
| 132 if (pending_render_view_host_) | |
| 133 pending_render_view_host_->SetIsLoading(is_loading); | |
| 134 } | |
| 135 | |
| 136 bool RenderViewHostManager::ShouldCloseTabOnUnresponsiveRenderer() { | |
| 137 if (!cross_navigation_pending_) | |
| 138 return true; | |
| 139 | |
| 140 // If the tab becomes unresponsive during unload while doing a | |
| 141 // cross-site navigation, proceed with the navigation. (This assumes that | |
| 142 // the pending RenderViewHost is still responsive.) | |
| 143 int pending_request_id = pending_render_view_host_->GetPendingRequestId(); | |
| 144 if (pending_request_id == -1) { | |
| 145 // Haven't gotten around to starting the request, because we're still | |
| 146 // waiting for the beforeunload handler to finish. We'll pretend that it | |
| 147 // did finish, to let the navigation proceed. Note that there's a danger | |
| 148 // that the beforeunload handler will later finish and possibly return | |
| 149 // false (meaning the navigation should not proceed), but we'll ignore it | |
| 150 // in this case because it took too long. | |
| 151 if (pending_render_view_host_->are_navigations_suspended()) | |
| 152 pending_render_view_host_->SetNavigationsSuspended(false); | |
| 153 } else { | |
| 154 // The request has been started and paused, while we're waiting for the | |
| 155 // unload handler to finish. We'll pretend that it did, by notifying the | |
| 156 // IO thread to let the response continue. The pending renderer will then | |
| 157 // be swapped in as part of the usual DidNavigate logic. (If the unload | |
| 158 // handler later finishes, this call will be ignored because the state in | |
| 159 // CrossSiteResourceHandler will already be cleaned up.) | |
| 160 ViewMsg_ClosePage_Params params; | |
| 161 params.closing_process_id = | |
| 162 render_view_host_->process()->id(); | |
| 163 params.closing_route_id = render_view_host_->routing_id(); | |
| 164 params.for_cross_site_transition = true; | |
| 165 params.new_render_process_host_id = | |
| 166 pending_render_view_host_->process()->id(); | |
| 167 params.new_request_id = pending_request_id; | |
| 168 current_host()->process()->CrossSiteClosePageACK(params); | |
| 169 } | |
| 170 return false; | |
| 171 } | |
| 172 | |
| 173 void RenderViewHostManager::DidNavigateMainFrame( | |
| 174 RenderViewHost* render_view_host) { | |
| 175 if (!cross_navigation_pending_) { | |
| 176 DCHECK(!pending_render_view_host_); | |
| 177 | |
| 178 // We should only hear this from our current renderer. | |
| 179 DCHECK(render_view_host == render_view_host_); | |
| 180 | |
| 181 // Even when there is no pending RVH, there may be a pending Web UI. | |
| 182 if (pending_web_ui_.get()) | |
| 183 CommitPending(); | |
| 184 return; | |
| 185 } | |
| 186 | |
| 187 if (render_view_host == pending_render_view_host_) { | |
| 188 // The pending cross-site navigation completed, so show the renderer. | |
| 189 CommitPending(); | |
| 190 cross_navigation_pending_ = false; | |
| 191 } else if (render_view_host == render_view_host_) { | |
| 192 // A navigation in the original page has taken place. Cancel the pending | |
| 193 // one. | |
| 194 CancelPending(); | |
| 195 cross_navigation_pending_ = false; | |
| 196 } else { | |
| 197 // No one else should be sending us DidNavigate in this state. | |
| 198 DCHECK(false); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 void RenderViewHostManager::SetWebUIPostCommit(WebUI* web_ui) { | |
| 203 DCHECK(!web_ui_.get()); | |
| 204 web_ui_.reset(web_ui); | |
| 205 } | |
| 206 | |
| 207 void RenderViewHostManager::RendererAbortedProvisionalLoad( | |
| 208 RenderViewHost* render_view_host) { | |
| 209 // We used to cancel the pending renderer here for cross-site downloads. | |
| 210 // However, it's not safe to do that because the download logic repeatedly | |
| 211 // looks for this TabContents based on a render view ID. Instead, we just | |
| 212 // leave the pending renderer around until the next navigation event | |
| 213 // (Navigate, DidNavigate, etc), which will clean it up properly. | |
| 214 // TODO(creis): All of this will go away when we move the cross-site logic | |
| 215 // to ResourceDispatcherHost, so that we intercept responses rather than | |
| 216 // navigation events. (That's necessary to support onunload anyway.) Once | |
| 217 // we've made that change, we won't create a pending renderer until we know | |
| 218 // the response is not a download. | |
| 219 } | |
| 220 | |
| 221 void RenderViewHostManager::ShouldClosePage(bool for_cross_site_transition, | |
| 222 bool proceed) { | |
| 223 if (for_cross_site_transition) { | |
| 224 // Ignore if we're not in a cross-site navigation. | |
| 225 if (!cross_navigation_pending_) | |
| 226 return; | |
| 227 | |
| 228 if (proceed) { | |
| 229 // Ok to unload the current page, so proceed with the cross-site | |
| 230 // navigation. Note that if navigations are not currently suspended, it | |
| 231 // might be because the renderer was deemed unresponsive and this call was | |
| 232 // already made by ShouldCloseTabOnUnresponsiveRenderer. In that case, it | |
| 233 // is ok to do nothing here. | |
| 234 if (pending_render_view_host_ && | |
| 235 pending_render_view_host_->are_navigations_suspended()) | |
| 236 pending_render_view_host_->SetNavigationsSuspended(false); | |
| 237 } else { | |
| 238 // Current page says to cancel. | |
| 239 CancelPending(); | |
| 240 cross_navigation_pending_ = false; | |
| 241 } | |
| 242 } else { | |
| 243 // Non-cross site transition means closing the entire tab. | |
| 244 bool proceed_to_fire_unload; | |
| 245 delegate_->BeforeUnloadFiredFromRenderManager(proceed, | |
| 246 &proceed_to_fire_unload); | |
| 247 | |
| 248 if (proceed_to_fire_unload) { | |
| 249 // This is not a cross-site navigation, the tab is being closed. | |
| 250 render_view_host_->ClosePage(false, -1, -1); | |
| 251 } | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 void RenderViewHostManager::OnCrossSiteResponse(int new_render_process_host_id, | |
| 256 int new_request_id) { | |
| 257 // Should only see this while we have a pending renderer. | |
| 258 if (!cross_navigation_pending_) | |
| 259 return; | |
| 260 DCHECK(pending_render_view_host_); | |
| 261 | |
| 262 // Tell the old renderer to run its onunload handler. When it finishes, it | |
| 263 // will send a ClosePage_ACK to the ResourceDispatcherHost with the given | |
| 264 // IDs (of the pending RVH's request), allowing the pending RVH's response to | |
| 265 // resume. | |
| 266 render_view_host_->ClosePage(true, | |
| 267 new_render_process_host_id, new_request_id); | |
| 268 | |
| 269 // ResourceDispatcherHost has told us to run the onunload handler, which | |
| 270 // means it is not a download or unsafe page, and we are going to perform the | |
| 271 // navigation. Thus, we no longer need to remember that the RenderViewHost | |
| 272 // is part of a pending cross-site request. | |
| 273 pending_render_view_host_->SetHasPendingCrossSiteRequest(false, | |
| 274 new_request_id); | |
| 275 } | |
| 276 | |
| 277 void RenderViewHostManager::OnCrossSiteNavigationCanceled() { | |
| 278 DCHECK(cross_navigation_pending_); | |
| 279 cross_navigation_pending_ = false; | |
| 280 if (pending_render_view_host_) | |
| 281 CancelPending(); | |
| 282 } | |
| 283 | |
| 284 bool RenderViewHostManager::ShouldTransitionCrossSite() { | |
| 285 // True if we are using process-per-site-instance (default) or | |
| 286 // process-per-site (kProcessPerSite). | |
| 287 return !CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessPerTab); | |
| 288 } | |
| 289 | |
| 290 bool RenderViewHostManager::ShouldSwapProcessesForNavigation( | |
| 291 const NavigationEntry* cur_entry, | |
| 292 const NavigationEntry* new_entry) const { | |
| 293 DCHECK(new_entry); | |
| 294 | |
| 295 // Check for reasons to swap processes even if we are in a process model that | |
| 296 // doesn't usually swap (e.g., process-per-tab). | |
| 297 | |
| 298 // For security, we should transition between processes when one is a Web UI | |
| 299 // page and one isn't. If there's no cur_entry, check the current RVH's | |
| 300 // site, which might already be committed to a Web UI URL (such as the NTP). | |
| 301 const GURL& current_url = (cur_entry) ? cur_entry->url() : | |
| 302 render_view_host_->site_instance()->site(); | |
| 303 Profile* profile = delegate_->GetControllerForRenderManager().profile(); | |
| 304 if (WebUIFactory::UseWebUIForURL(profile, current_url)) { | |
| 305 // Force swap if it's not an acceptable URL for Web UI. | |
| 306 if (!WebUIFactory::IsURLAcceptableForWebUI(profile, new_entry->url())) | |
| 307 return true; | |
| 308 } else { | |
| 309 // Force swap if it's a Web UI URL. | |
| 310 if (WebUIFactory::UseWebUIForURL(profile, new_entry->url())) | |
| 311 return true; | |
| 312 } | |
| 313 | |
| 314 if (!cur_entry) { | |
| 315 // Always choose a new process when navigating to extension URLs. The | |
| 316 // process grouping logic will combine all of a given extension's pages | |
| 317 // into the same process. | |
| 318 if (new_entry->url().SchemeIs(chrome::kExtensionScheme)) | |
| 319 return true; | |
| 320 | |
| 321 return false; | |
| 322 } | |
| 323 | |
| 324 // We can't switch a RenderView between view source and non-view source mode | |
| 325 // without screwing up the session history sometimes (when navigating between | |
| 326 // "view-source:http://foo.com/" and "http://foo.com/", WebKit doesn't treat | |
| 327 // it as a new navigation). So require a view switch. | |
| 328 if (cur_entry->IsViewSourceMode() != new_entry->IsViewSourceMode()) | |
| 329 return true; | |
| 330 | |
| 331 // Also, we must switch if one is an extension and the other is not the exact | |
| 332 // same extension. | |
| 333 if (cur_entry->url().SchemeIs(chrome::kExtensionScheme) || | |
| 334 new_entry->url().SchemeIs(chrome::kExtensionScheme)) { | |
| 335 if (cur_entry->url().GetOrigin() != new_entry->url().GetOrigin()) | |
| 336 return true; | |
| 337 } | |
| 338 | |
| 339 return false; | |
| 340 } | |
| 341 | |
| 342 SiteInstance* RenderViewHostManager::GetSiteInstanceForEntry( | |
| 343 const NavigationEntry& entry, | |
| 344 SiteInstance* curr_instance) { | |
| 345 // NOTE: This is only called when ShouldTransitionCrossSite is true. | |
| 346 | |
| 347 // If the entry has an instance already, we should use it. | |
| 348 if (entry.site_instance()) | |
| 349 return entry.site_instance(); | |
| 350 | |
| 351 // (UGLY) HEURISTIC, process-per-site only: | |
| 352 // | |
| 353 // If this navigation is generated, then it probably corresponds to a search | |
| 354 // query. Given that search results typically lead to users navigating to | |
| 355 // other sites, we don't really want to use the search engine hostname to | |
| 356 // determine the site instance for this navigation. | |
| 357 // | |
| 358 // NOTE: This can be removed once we have a way to transition between | |
| 359 // RenderViews in response to a link click. | |
| 360 // | |
| 361 if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessPerSite) && | |
| 362 entry.transition_type() == PageTransition::GENERATED) | |
| 363 return curr_instance; | |
| 364 | |
| 365 const GURL& dest_url = entry.url(); | |
| 366 | |
| 367 // If we haven't used our SiteInstance (and thus RVH) yet, then we can use it | |
| 368 // for this entry. We won't commit the SiteInstance to this site until the | |
| 369 // navigation commits (in DidNavigate), unless the navigation entry was | |
| 370 // restored or it's a Web UI as described below. | |
| 371 if (!curr_instance->has_site()) { | |
| 372 // If we've already created a SiteInstance for our destination, we don't | |
| 373 // want to use this unused SiteInstance; use the existing one. (We don't | |
| 374 // do this check if the curr_instance has a site, because for now, we want | |
| 375 // to compare against the current URL and not the SiteInstance's site. In | |
| 376 // this case, there is no current URL, so comparing against the site is ok. | |
| 377 // See additional comments below.) | |
| 378 if (curr_instance->HasRelatedSiteInstance(dest_url)) { | |
| 379 return curr_instance->GetRelatedSiteInstance(dest_url); | |
| 380 } else { | |
| 381 // Normally the "site" on the SiteInstance is set lazily when the load | |
| 382 // actually commits. This is to support better process sharing in case | |
| 383 // the site redirects to some other site: we want to use the destination | |
| 384 // site in the site instance. | |
| 385 // | |
| 386 // In the case of session restore, as it loads all the pages immediately | |
| 387 // we need to set the site first, otherwise after a restore none of the | |
| 388 // pages would share renderers. | |
| 389 // | |
| 390 // For Web UI (this mostly comes up for the new tab page), the | |
| 391 // SiteInstance has special meaning: we never want to reassign the | |
| 392 // process. If you navigate to another site before the Web UI commits, | |
| 393 // we still want to create a new process rather than re-using the | |
| 394 // existing Web UI process. | |
| 395 if (entry.restore_type() != NavigationEntry::RESTORE_NONE || | |
| 396 WebUIFactory::HasWebUIScheme(dest_url)) | |
| 397 curr_instance->SetSite(dest_url); | |
| 398 return curr_instance; | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 // Otherwise, only create a new SiteInstance for cross-site navigation. | |
| 403 | |
| 404 // TODO(creis): Once we intercept links and script-based navigations, we | |
| 405 // will be able to enforce that all entries in a SiteInstance actually have | |
| 406 // the same site, and it will be safe to compare the URL against the | |
| 407 // SiteInstance's site, as follows: | |
| 408 // const GURL& current_url = curr_instance->site(); | |
| 409 // For now, though, we're in a hybrid model where you only switch | |
| 410 // SiteInstances if you type in a cross-site URL. This means we have to | |
| 411 // compare the entry's URL to the last committed entry's URL. | |
| 412 NavigationController& controller = delegate_->GetControllerForRenderManager(); | |
| 413 NavigationEntry* curr_entry = controller.GetLastCommittedEntry(); | |
| 414 if (interstitial_page_) { | |
| 415 // The interstitial is currently the last committed entry, but we want to | |
| 416 // compare against the last non-interstitial entry. | |
| 417 curr_entry = controller.GetEntryAtOffset(-1); | |
| 418 } | |
| 419 // If there is no last non-interstitial entry (and curr_instance already | |
| 420 // has a site), then we must have been opened from another tab. We want | |
| 421 // to compare against the URL of the page that opened us, but we can't | |
| 422 // get to it directly. The best we can do is check against the site of | |
| 423 // the SiteInstance. This will be correct when we intercept links and | |
| 424 // script-based navigations, but for now, it could place some pages in a | |
| 425 // new process unnecessarily. We should only hit this case if a page tries | |
| 426 // to open a new tab to an interstitial-inducing URL, and then navigates | |
| 427 // the page to a different same-site URL. (This seems very unlikely in | |
| 428 // practice.) | |
| 429 const GURL& current_url = (curr_entry) ? curr_entry->url() : | |
| 430 curr_instance->site(); | |
| 431 Profile* profile = controller.profile(); | |
| 432 | |
| 433 if (SiteInstance::IsSameWebSite(profile, current_url, dest_url)) { | |
| 434 return curr_instance; | |
| 435 } else if (ShouldSwapProcessesForNavigation(curr_entry, &entry)) { | |
| 436 // When we're swapping, we need to force the site instance AND browsing | |
| 437 // instance to be different ones. This addresses special cases where we use | |
| 438 // a single BrowsingInstance for all pages of a certain type (e.g., New Tab | |
| 439 // Pages), keeping them in the same process. When you navigate away from | |
| 440 // that page, we want to explicity ignore that BrowsingInstance and group | |
| 441 // this page into the appropriate SiteInstance for its URL. | |
| 442 return SiteInstance::CreateSiteInstanceForURL(profile, dest_url); | |
| 443 } else { | |
| 444 // Start the new renderer in a new SiteInstance, but in the current | |
| 445 // BrowsingInstance. It is important to immediately give this new | |
| 446 // SiteInstance to a RenderViewHost (if it is different than our current | |
| 447 // SiteInstance), so that it is ref counted. This will happen in | |
| 448 // CreatePendingRenderView. | |
| 449 return curr_instance->GetRelatedSiteInstance(dest_url); | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 bool RenderViewHostManager::CreatePendingRenderView( | |
| 454 const NavigationEntry& entry, SiteInstance* instance) { | |
| 455 NavigationEntry* curr_entry = | |
| 456 delegate_->GetControllerForRenderManager().GetLastCommittedEntry(); | |
| 457 if (curr_entry) { | |
| 458 DCHECK(!curr_entry->content_state().empty()); | |
| 459 // TODO(creis): Should send a message to the RenderView to let it know | |
| 460 // we're about to switch away, so that it sends an UpdateState message. | |
| 461 } | |
| 462 | |
| 463 pending_render_view_host_ = RenderViewHostFactory::Create( | |
| 464 instance, render_view_delegate_, MSG_ROUTING_NONE, delegate_-> | |
| 465 GetControllerForRenderManager().session_storage_namespace()); | |
| 466 NotificationService::current()->Notify( | |
| 467 NotificationType::RENDER_VIEW_HOST_CREATED_FOR_TAB, | |
| 468 Source<RenderViewHostManager>(this), | |
| 469 Details<RenderViewHost>(pending_render_view_host_)); | |
| 470 | |
| 471 bool success = InitRenderView(pending_render_view_host_, entry); | |
| 472 if (success) { | |
| 473 // Don't show the view until we get a DidNavigate from it. | |
| 474 pending_render_view_host_->view()->Hide(); | |
| 475 } else { | |
| 476 CancelPending(); | |
| 477 } | |
| 478 return success; | |
| 479 } | |
| 480 | |
| 481 bool RenderViewHostManager::InitRenderView(RenderViewHost* render_view_host, | |
| 482 const NavigationEntry& entry) { | |
| 483 // If the pending navigation is to a WebUI, tell the RenderView about any | |
| 484 // bindings it will need enabled. | |
| 485 if (pending_web_ui_.get()) | |
| 486 render_view_host->AllowBindings(pending_web_ui_->bindings()); | |
| 487 | |
| 488 // Tell the RenderView whether it will be used for an extension process. | |
| 489 Profile* profile = delegate_->GetControllerForRenderManager().profile(); | |
| 490 bool is_extension_process = profile->GetExtensionService() && | |
| 491 profile->GetExtensionService()->ExtensionBindingsAllowed(entry.url()); | |
| 492 render_view_host->set_is_extension_process(is_extension_process); | |
| 493 | |
| 494 return delegate_->CreateRenderViewForRenderManager(render_view_host); | |
| 495 } | |
| 496 | |
| 497 void RenderViewHostManager::CommitPending() { | |
| 498 // First check whether we're going to want to focus the location bar after | |
| 499 // this commit. We do this now because the navigation hasn't formally | |
| 500 // committed yet, so if we've already cleared |pending_web_ui_| the call chain | |
| 501 // this triggers won't be able to figure out what's going on. | |
| 502 bool will_focus_location_bar = delegate_->FocusLocationBarByDefault(); | |
| 503 | |
| 504 // Next commit the Web UI, if any. | |
| 505 web_ui_.swap(pending_web_ui_); | |
| 506 if (web_ui_.get() && pending_web_ui_.get() && !pending_render_view_host_) | |
| 507 web_ui_->DidBecomeActiveForReusedRenderView(); | |
| 508 pending_web_ui_.reset(); | |
| 509 | |
| 510 // It's possible for the pending_render_view_host_ to be NULL when we aren't | |
| 511 // crossing process boundaries. If so, we just needed to handle the Web UI | |
| 512 // committing above and we're done. | |
| 513 if (!pending_render_view_host_) { | |
| 514 if (will_focus_location_bar) | |
| 515 delegate_->SetFocusToLocationBar(false); | |
| 516 return; | |
| 517 } | |
| 518 | |
| 519 // Remember if the page was focused so we can focus the new renderer in | |
| 520 // that case. | |
| 521 bool focus_render_view = !will_focus_location_bar && | |
| 522 render_view_host_->view() && render_view_host_->view()->HasFocus(); | |
| 523 | |
| 524 // Hide the current view and prepare to destroy it. | |
| 525 // TODO(creis): Get the old RenderViewHost to send us an UpdateState message | |
| 526 // before we destroy it. | |
| 527 if (render_view_host_->view()) | |
| 528 render_view_host_->view()->Hide(); | |
| 529 RenderViewHost* old_render_view_host = render_view_host_; | |
| 530 | |
| 531 // Swap in the pending view and make it active. | |
| 532 render_view_host_ = pending_render_view_host_; | |
| 533 pending_render_view_host_ = NULL; | |
| 534 | |
| 535 // If the view is gone, then this RenderViewHost died while it was hidden. | |
| 536 // We ignored the RenderViewGone call at the time, so we should send it now | |
| 537 // to make sure the sad tab shows up, etc. | |
| 538 if (render_view_host_->view()) | |
| 539 render_view_host_->view()->Show(); | |
| 540 else | |
| 541 delegate_->RenderViewGoneFromRenderManager(render_view_host_); | |
| 542 | |
| 543 // Make sure the size is up to date. (Fix for bug 1079768.) | |
| 544 delegate_->UpdateRenderViewSizeForRenderManager(); | |
| 545 | |
| 546 if (will_focus_location_bar) | |
| 547 delegate_->SetFocusToLocationBar(false); | |
| 548 else if (focus_render_view && render_view_host_->view()) | |
| 549 render_view_host_->view()->Focus(); | |
| 550 | |
| 551 RenderViewHostSwitchedDetails details; | |
| 552 details.new_host = render_view_host_; | |
| 553 details.old_host = old_render_view_host; | |
| 554 NotificationService::current()->Notify( | |
| 555 NotificationType::RENDER_VIEW_HOST_CHANGED, | |
| 556 Source<NavigationController>(&delegate_->GetControllerForRenderManager()), | |
| 557 Details<RenderViewHostSwitchedDetails>(&details)); | |
| 558 | |
| 559 old_render_view_host->Shutdown(); | |
| 560 | |
| 561 // Let the task manager know that we've swapped RenderViewHosts, since it | |
| 562 // might need to update its process groupings. | |
| 563 delegate_->NotifySwappedFromRenderManager(); | |
| 564 } | |
| 565 | |
| 566 RenderViewHost* RenderViewHostManager::UpdateRendererStateForNavigate( | |
| 567 const NavigationEntry& entry) { | |
| 568 // If we are cross-navigating, then we want to get back to normal and navigate | |
| 569 // as usual. | |
| 570 if (cross_navigation_pending_) { | |
| 571 if (pending_render_view_host_) | |
| 572 CancelPending(); | |
| 573 cross_navigation_pending_ = false; | |
| 574 } | |
| 575 | |
| 576 // This will possibly create (set to NULL) a Web UI object for the pending | |
| 577 // page. We'll use this later to give the page special access. This must | |
| 578 // happen before the new renderer is created below so it will get bindings. | |
| 579 // It must also happen after the above conditional call to CancelPending(), | |
| 580 // otherwise CancelPending may clear the pending_web_ui_ and the page will | |
| 581 // not have it's bindings set appropriately. | |
| 582 pending_web_ui_.reset(delegate_->CreateWebUIForRenderManager(entry.url())); | |
| 583 | |
| 584 // render_view_host_ will not be deleted before the end of this method, so we | |
| 585 // don't have to worry about this SiteInstance's ref count dropping to zero. | |
| 586 SiteInstance* curr_instance = render_view_host_->site_instance(); | |
| 587 | |
| 588 // Determine if we need a new SiteInstance for this entry. | |
| 589 // Again, new_instance won't be deleted before the end of this method, so it | |
| 590 // is safe to use a normal pointer here. | |
| 591 SiteInstance* new_instance = curr_instance; | |
| 592 bool force_swap = ShouldSwapProcessesForNavigation( | |
| 593 delegate_->GetLastCommittedNavigationEntryForRenderManager(), | |
| 594 &entry); | |
| 595 if (ShouldTransitionCrossSite() || force_swap) | |
| 596 new_instance = GetSiteInstanceForEntry(entry, curr_instance); | |
| 597 | |
| 598 if (new_instance != curr_instance || force_swap) { | |
| 599 // New SiteInstance. | |
| 600 DCHECK(!cross_navigation_pending_); | |
| 601 | |
| 602 // Create a pending RVH and navigate it. | |
| 603 bool success = CreatePendingRenderView(entry, new_instance); | |
| 604 if (!success) | |
| 605 return NULL; | |
| 606 | |
| 607 // Check if our current RVH is live before we set up a transition. | |
| 608 if (!render_view_host_->IsRenderViewLive()) { | |
| 609 if (!cross_navigation_pending_) { | |
| 610 // The current RVH is not live. There's no reason to sit around with a | |
| 611 // sad tab or a newly created RVH while we wait for the pending RVH to | |
| 612 // navigate. Just switch to the pending RVH now and go back to non | |
| 613 // cross-navigating (Note that we don't care about on{before}unload | |
| 614 // handlers if the current RVH isn't live.) | |
| 615 CommitPending(); | |
| 616 return render_view_host_; | |
| 617 } else { | |
| 618 NOTREACHED(); | |
| 619 return render_view_host_; | |
| 620 } | |
| 621 } | |
| 622 // Otherwise, it's safe to treat this as a pending cross-site transition. | |
| 623 | |
| 624 // Make sure the old render view stops, in case a load is in progress. | |
| 625 render_view_host_->Stop(); | |
| 626 | |
| 627 // Suspend the new render view (i.e., don't let it send the cross-site | |
| 628 // Navigate message) until we hear back from the old renderer's | |
| 629 // onbeforeunload handler. If the handler returns false, we'll have to | |
| 630 // cancel the request. | |
| 631 DCHECK(!pending_render_view_host_->are_navigations_suspended()); | |
| 632 pending_render_view_host_->SetNavigationsSuspended(true); | |
| 633 | |
| 634 // Tell the CrossSiteRequestManager that this RVH has a pending cross-site | |
| 635 // request, so that ResourceDispatcherHost will know to tell us to run the | |
| 636 // old page's onunload handler before it sends the response. | |
| 637 pending_render_view_host_->SetHasPendingCrossSiteRequest(true, -1); | |
| 638 | |
| 639 // We now have a pending RVH. | |
| 640 DCHECK(!cross_navigation_pending_); | |
| 641 cross_navigation_pending_ = true; | |
| 642 | |
| 643 // Tell the old render view to run its onbeforeunload handler, since it | |
| 644 // doesn't otherwise know that the cross-site request is happening. This | |
| 645 // will trigger a call to ShouldClosePage with the reply. | |
| 646 render_view_host_->FirePageBeforeUnload(true); | |
| 647 | |
| 648 return pending_render_view_host_; | |
| 649 } else { | |
| 650 if (pending_web_ui_.get() && render_view_host_->IsRenderViewLive()) | |
| 651 pending_web_ui_->RenderViewReused(render_view_host_); | |
| 652 | |
| 653 // The renderer can exit view source mode when any error or cancellation | |
| 654 // happen. We must overwrite to recover the mode. | |
| 655 if (entry.IsViewSourceMode()) { | |
| 656 render_view_host_->Send( | |
| 657 new ViewMsg_EnableViewSourceMode(render_view_host_->routing_id())); | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 // Same SiteInstance can be used. Navigate render_view_host_ if we are not | |
| 662 // cross navigating. | |
| 663 DCHECK(!cross_navigation_pending_); | |
| 664 return render_view_host_; | |
| 665 } | |
| 666 | |
| 667 void RenderViewHostManager::CancelPending() { | |
| 668 RenderViewHost* pending_render_view_host = pending_render_view_host_; | |
| 669 pending_render_view_host_ = NULL; | |
| 670 pending_render_view_host->Shutdown(); | |
| 671 | |
| 672 pending_web_ui_.reset(); | |
| 673 } | |
| 674 | |
| 675 void RenderViewHostManager::RenderViewDeleted(RenderViewHost* rvh) { | |
| 676 // We are doing this in order to work around and to track a crasher | |
| 677 // (http://crbug.com/23411) where it seems that pending_render_view_host_ is | |
| 678 // deleted (not sure from where) but not NULLed. | |
| 679 if (rvh == pending_render_view_host_) { | |
| 680 // If you hit this NOTREACHED, please report it in the following bug | |
| 681 // http://crbug.com/23411 Make sure to include what you were doing when it | |
| 682 // happened (navigating to a new page, closing a tab...) and if you can | |
| 683 // reproduce. | |
| 684 NOTREACHED(); | |
| 685 pending_render_view_host_ = NULL; | |
| 686 } | |
| 687 } | |
| 688 | |
| 689 void RenderViewHostManager::SwapInRenderViewHost(RenderViewHost* rvh) { | |
| 690 web_ui_.reset(); | |
| 691 | |
| 692 // Hide the current view and prepare to destroy it. | |
| 693 if (render_view_host_->view()) | |
| 694 render_view_host_->view()->Hide(); | |
| 695 RenderViewHost* old_render_view_host = render_view_host_; | |
| 696 | |
| 697 // Swap in the new view and make it active. | |
| 698 render_view_host_ = rvh; | |
| 699 render_view_host_->set_delegate(render_view_delegate_); | |
| 700 delegate_->CreateViewAndSetSizeForRVH(render_view_host_); | |
| 701 render_view_host_->ActivateDeferredPluginHandles(); | |
| 702 // If the view is gone, then this RenderViewHost died while it was hidden. | |
| 703 // We ignored the RenderViewGone call at the time, so we should send it now | |
| 704 // to make sure the sad tab shows up, etc. | |
| 705 if (render_view_host_->view()) { | |
| 706 // TODO(tburkard,cbentzel): Figure out why this hack is needed and/or | |
| 707 // if it can be removed. On Windows, prerendering will not work without | |
| 708 // doing a Hide before the Show. | |
| 709 render_view_host_->view()->Hide(); | |
| 710 render_view_host_->view()->Show(); | |
| 711 } | |
| 712 | |
| 713 delegate_->UpdateRenderViewSizeForRenderManager(); | |
| 714 | |
| 715 RenderViewHostSwitchedDetails details; | |
| 716 details.new_host = render_view_host_; | |
| 717 details.old_host = old_render_view_host; | |
| 718 NotificationService::current()->Notify( | |
| 719 NotificationType::RENDER_VIEW_HOST_CHANGED, | |
| 720 Source<NavigationController>(&delegate_->GetControllerForRenderManager()), | |
| 721 Details<RenderViewHostSwitchedDetails>(&details)); | |
| 722 | |
| 723 // This will cause the old RenderViewHost to delete itself. | |
| 724 old_render_view_host->Shutdown(); | |
| 725 | |
| 726 // Let the task manager know that we've swapped RenderViewHosts, since it | |
| 727 // might need to update its process groupings. | |
| 728 delegate_->NotifySwappedFromRenderManager(); | |
| 729 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 6537015:
Start moving core pieces of Chrome multi-process code to src\content. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/