blob: b649dfa09ea5e9fead28360f44aa6deda15162a1 [file] [log] [blame]
[email protected]91854cd2012-01-10 19:43:571// Copyright (c) 2012 The Chromium Authors. All rights reserved.
license.botbf09a502008-08-24 00:55:552// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
initial.commit09911bf2008-07-26 23:55:294
[email protected]f9e4dae2012-04-10 21:26:375#include "content/browser/web_contents/navigation_controller_impl.h"
initial.commit09911bf2008-07-26 23:55:296
[email protected]c5b88d82012-10-06 17:03:337#include "base/bind.h"
[email protected]9677a3c2012-12-22 04:18:588#include "base/command_line.h"
initial.commit09911bf2008-07-26 23:55:299#include "base/file_util.h"
10#include "base/logging.h"
[email protected]b69934e2011-10-29 02:51:5211#include "base/string_number_conversions.h" // Temporary
initial.commit09911bf2008-07-26 23:55:2912#include "base/string_util.h"
[email protected]b689fce72009-03-17 22:45:3413#include "base/time.h"
[email protected]252cad62010-08-18 18:33:5714#include "base/utf_string_conversions.h"
[email protected]825b1662012-03-12 19:07:3115#include "content/browser/browser_url_handler_impl.h"
[email protected]b9535422012-02-09 01:47:5916#include "content/browser/child_process_security_policy_impl.h"
[email protected]1ea3c792012-04-17 01:25:0417#include "content/browser/dom_storage/dom_storage_context_impl.h"
18#include "content/browser/dom_storage/session_storage_namespace_impl.h"
[email protected]b3c41c0b2012-03-06 15:48:3219#include "content/browser/renderer_host/render_view_host_impl.h" // Temporary
[email protected]b6583592012-01-25 19:52:3320#include "content/browser/site_instance_impl.h"
[email protected]f9e4dae2012-04-10 21:26:3721#include "content/browser/web_contents/debug_urls.h"
22#include "content/browser/web_contents/interstitial_page_impl.h"
23#include "content/browser/web_contents/navigation_entry_impl.h"
[email protected]93ddb3c2012-04-11 21:44:2924#include "content/browser/web_contents/web_contents_impl.h"
[email protected]0aed2f52011-03-23 18:06:3625#include "content/common/view_messages.h"
[email protected]ccb797302011-12-15 16:55:1126#include "content/public/browser/browser_context.h"
[email protected]d1198fd2012-08-13 22:50:1927#include "content/public/browser/content_browser_client.h"
[email protected]d9083482012-01-06 00:38:4628#include "content/public/browser/invalidate_type.h"
[email protected]5b96836f2011-12-22 07:39:0029#include "content/public/browser/navigation_details.h"
[email protected]7f6f44c2011-12-14 13:23:3830#include "content/public/browser/notification_service.h"
[email protected]0d6e9bd2011-10-18 04:29:1631#include "content/public/browser/notification_types.h"
[email protected]9677a3c2012-12-22 04:18:5832#include "content/public/browser/render_widget_host.h"
33#include "content/public/browser/render_widget_host_view.h"
[email protected]4c3a23582012-08-18 08:54:3434#include "content/public/browser/storage_partition.h"
[email protected]7f6f44c2011-12-14 13:23:3835#include "content/public/browser/user_metrics.h"
[email protected]674bc592011-12-20 23:00:4236#include "content/public/browser/web_contents_delegate.h"
[email protected]d1198fd2012-08-13 22:50:1937#include "content/public/common/content_client.h"
[email protected]7f6f44c2011-12-14 13:23:3838#include "content/public/common/content_constants.h"
[email protected]9677a3c2012-12-22 04:18:5839#include "content/public/common/content_switches.h"
[email protected]d1ef81d2012-07-24 11:39:3640#include "content/public/common/url_constants.h"
[email protected]a23de8572009-06-03 02:16:3241#include "net/base/escape.h"
[email protected]31682282010-01-15 18:05:1642#include "net/base/mime_util.h"
[email protected]7f070d42011-03-09 20:25:3243#include "net/base/net_util.h"
[email protected]9677a3c2012-12-22 04:18:5844#include "skia/ext/platform_canvas.h"
45#include "ui/gfx/codec/png_codec.h"
[email protected]bb0e79472012-10-23 04:36:3446#include "webkit/glue/glue_serialize.h"
initial.commit09911bf2008-07-26 23:55:2947
[email protected]8ff00d72012-10-23 19:12:2148namespace content {
[email protected]e9ba4472008-09-14 15:42:4349namespace {
50
[email protected]93f230e02011-06-01 14:40:0051const int kInvalidateAll = 0xFFFFFFFF;
[email protected]8030f012009-09-25 18:09:3752
[email protected]e9ba4472008-09-14 15:42:4353// Invoked when entries have been pruned, or removed. For example, if the
54// current entries are [google, digg, yahoo], with the current entry google,
55// and the user types in cnet, then digg and yahoo are pruned.
[email protected]d202a7c2012-01-04 07:53:4756void NotifyPrunedEntries(NavigationControllerImpl* nav_controller,
[email protected]c12bf1a12008-09-17 16:28:4957 bool from_front,
58 int count) {
[email protected]8ff00d72012-10-23 19:12:2159 PrunedDetails details;
[email protected]c12bf1a12008-09-17 16:28:4960 details.from_front = from_front;
61 details.count = count;
[email protected]8ff00d72012-10-23 19:12:2162 NotificationService::current()->Notify(
63 NOTIFICATION_NAV_LIST_PRUNED,
64 Source<NavigationController>(nav_controller),
65 Details<PrunedDetails>(&details));
[email protected]e9ba4472008-09-14 15:42:4366}
67
68// Ensure the given NavigationEntry has a valid state, so that WebKit does not
69// get confused if we navigate back to it.
[email protected]40bcc302009-03-02 20:50:3970//
[email protected]e9ba4472008-09-14 15:42:4371// An empty state is treated as a new navigation by WebKit, which would mean
72// losing the navigation entries and generating a new navigation entry after
73// this one. We don't want that. To avoid this we create a valid state which
74// WebKit will not treat as a new navigation.
[email protected]10f417c52011-12-28 21:04:2375void SetContentStateIfEmpty(NavigationEntryImpl* entry) {
[email protected]36fc0392011-12-25 03:59:5176 if (entry->GetContentState().empty()) {
77 entry->SetContentState(
78 webkit_glue::CreateHistoryStateForURL(entry->GetURL()));
[email protected]e9ba4472008-09-14 15:42:4379 }
80}
81
[email protected]2ca1ea662012-10-04 02:26:3682NavigationEntryImpl::RestoreType ControllerRestoreTypeToEntryType(
83 NavigationController::RestoreType type) {
84 switch (type) {
85 case NavigationController::RESTORE_CURRENT_SESSION:
86 return NavigationEntryImpl::RESTORE_CURRENT_SESSION;
87 case NavigationController::RESTORE_LAST_SESSION_EXITED_CLEANLY:
88 return NavigationEntryImpl::RESTORE_LAST_SESSION_EXITED_CLEANLY;
89 case NavigationController::RESTORE_LAST_SESSION_CRASHED:
90 return NavigationEntryImpl::RESTORE_LAST_SESSION_CRASHED;
91 }
92 NOTREACHED();
93 return NavigationEntryImpl::RESTORE_CURRENT_SESSION;
94}
95
[email protected]e9ba4472008-09-14 15:42:4396// Configure all the NavigationEntries in entries for restore. This resets
97// the transition type to reload and makes sure the content state isn't empty.
98void ConfigureEntriesForRestore(
[email protected]10f417c52011-12-28 21:04:2399 std::vector<linked_ptr<NavigationEntryImpl> >* entries,
[email protected]2ca1ea662012-10-04 02:26:36100 NavigationController::RestoreType type) {
[email protected]e9ba4472008-09-14 15:42:43101 for (size_t i = 0; i < entries->size(); ++i) {
102 // Use a transition type of reload so that we don't incorrectly increase
103 // the typed count.
[email protected]8ff00d72012-10-23 19:12:21104 (*entries)[i]->SetTransitionType(PAGE_TRANSITION_RELOAD);
[email protected]2ca1ea662012-10-04 02:26:36105 (*entries)[i]->set_restore_type(ControllerRestoreTypeToEntryType(type));
[email protected]e9ba4472008-09-14 15:42:43106 // NOTE(darin): This code is only needed for backwards compat.
107 SetContentStateIfEmpty((*entries)[i].get());
108 }
109}
110
111// See NavigationController::IsURLInPageNavigation for how this works and why.
[email protected]ce760d742012-08-30 22:31:10112bool AreURLsInPageNavigation(const GURL& existing_url,
113 const GURL& new_url,
114 bool renderer_says_in_page) {
115 if (existing_url == new_url)
116 return renderer_says_in_page;
117
118 if (!new_url.has_ref()) {
[email protected]192d8c5e2010-02-23 07:26:32119 // TODO(jcampan): what about when navigating back from a ref URL to the top
120 // non ref URL? Nothing is loaded in that case but we return false here.
121 // The user could also navigate from the ref URL to the non ref URL by
122 // entering the non ref URL in the location bar or through a bookmark, in
123 // which case there would be a load. I am not sure if the non-load/load
124 // scenarios can be differentiated with the TransitionType.
[email protected]e9ba4472008-09-14 15:42:43125 return false;
[email protected]192d8c5e2010-02-23 07:26:32126 }
[email protected]e9ba4472008-09-14 15:42:43127
128 url_canon::Replacements<char> replacements;
129 replacements.ClearRef();
130 return existing_url.ReplaceComponents(replacements) ==
131 new_url.ReplaceComponents(replacements);
132}
133
[email protected]bf70edce2012-06-20 22:32:22134// Determines whether or not we should be carrying over a user agent override
135// between two NavigationEntries.
[email protected]8ff00d72012-10-23 19:12:21136bool ShouldKeepOverride(const NavigationEntry* last_entry) {
[email protected]bf70edce2012-06-20 22:32:22137 return last_entry && last_entry->GetIsOverridingUserAgent();
138}
139
[email protected]e9ba4472008-09-14 15:42:43140} // namespace
141
[email protected]d202a7c2012-01-04 07:53:47142// NavigationControllerImpl ----------------------------------------------------
initial.commit09911bf2008-07-26 23:55:29143
[email protected]9b51970d2011-12-09 23:10:23144const size_t kMaxEntryCountForTestingNotSet = -1;
145
[email protected]765b35502008-08-21 00:51:20146// static
[email protected]d202a7c2012-01-04 07:53:47147size_t NavigationControllerImpl::max_entry_count_for_testing_ =
[email protected]9b51970d2011-12-09 23:10:23148 kMaxEntryCountForTestingNotSet;
[email protected]765b35502008-08-21 00:51:20149
[email protected]cdcb1dee2012-01-04 00:46:20150 // Should Reload check for post data? The default is true, but is set to false
151// when testing.
152static bool g_check_for_repost = true;
initial.commit09911bf2008-07-26 23:55:29153
[email protected]71fde352011-12-29 03:29:56154// static
[email protected]cdcb1dee2012-01-04 00:46:20155NavigationEntry* NavigationController::CreateNavigationEntry(
[email protected]71fde352011-12-29 03:29:56156 const GURL& url,
[email protected]cdcb1dee2012-01-04 00:46:20157 const Referrer& referrer,
158 PageTransition transition,
[email protected]71fde352011-12-29 03:29:56159 bool is_renderer_initiated,
160 const std::string& extra_headers,
[email protected]cdcb1dee2012-01-04 00:46:20161 BrowserContext* browser_context) {
[email protected]71fde352011-12-29 03:29:56162 // Allow the browser URL handler to rewrite the URL. This will, for example,
163 // remove "view-source:" from the beginning of the URL to get the URL that
164 // will actually be loaded. This real URL won't be shown to the user, just
165 // used internally.
166 GURL loaded_url(url);
167 bool reverse_on_redirect = false;
[email protected]825b1662012-03-12 19:07:31168 BrowserURLHandlerImpl::GetInstance()->RewriteURLIfNecessary(
[email protected]71fde352011-12-29 03:29:56169 &loaded_url, browser_context, &reverse_on_redirect);
170
171 NavigationEntryImpl* entry = new NavigationEntryImpl(
172 NULL, // The site instance for tabs is sent on navigation
[email protected]2db9bd72012-04-13 20:20:56173 // (WebContents::GetSiteInstance).
[email protected]71fde352011-12-29 03:29:56174 -1,
175 loaded_url,
176 referrer,
177 string16(),
178 transition,
179 is_renderer_initiated);
180 entry->SetVirtualURL(url);
181 entry->set_user_typed_url(url);
182 entry->set_update_virtual_url_with_url(reverse_on_redirect);
183 entry->set_extra_headers(extra_headers);
184 return entry;
185}
186
[email protected]cdcb1dee2012-01-04 00:46:20187// static
188void NavigationController::DisablePromptOnRepost() {
189 g_check_for_repost = false;
190}
191
[email protected]c5b88d82012-10-06 17:03:33192base::Time NavigationControllerImpl::TimeSmoother::GetSmoothedTime(
193 base::Time t) {
194 // If |t| is between the water marks, we're in a run of duplicates
195 // or just getting out of it, so increase the high-water mark to get
196 // a time that probably hasn't been used before and return it.
197 if (low_water_mark_ <= t && t <= high_water_mark_) {
198 high_water_mark_ += base::TimeDelta::FromMicroseconds(1);
199 return high_water_mark_;
200 }
201
202 // Otherwise, we're clear of the last duplicate run, so reset the
203 // water marks.
204 low_water_mark_ = high_water_mark_ = t;
205 return t;
206}
207
[email protected]d202a7c2012-01-04 07:53:47208NavigationControllerImpl::NavigationControllerImpl(
[email protected]2db9bd72012-04-13 20:20:56209 WebContentsImpl* web_contents,
[email protected]d1198fd2012-08-13 22:50:19210 BrowserContext* browser_context)
[email protected]3d7474ff2011-07-27 17:47:37211 : browser_context_(browser_context),
[email protected]765b35502008-08-21 00:51:20212 pending_entry_(NULL),
213 last_committed_entry_index_(-1),
214 pending_entry_index_(-1),
[email protected]cbab76d2008-10-13 22:42:47215 transient_entry_index_(-1),
[email protected]2db9bd72012-04-13 20:20:56216 web_contents_(web_contents),
initial.commit09911bf2008-07-26 23:55:29217 max_restored_page_id_(-1),
[email protected]5d063842009-05-15 04:08:24218 ALLOW_THIS_IN_INITIALIZER_LIST(ssl_manager_(this)),
[email protected]38b8f4e2009-09-24 19:44:57219 needs_reload_(false),
[email protected]27ba81c2012-08-21 17:04:09220 is_initial_navigation_(true),
[email protected]c5b88d82012-10-06 17:03:33221 pending_reload_(NO_RELOAD),
[email protected]8cea7892013-02-06 06:49:31222 get_timestamp_callback_(base::Bind(&base::Time::Now)),
223 ALLOW_THIS_IN_INITIALIZER_LIST(take_screenshot_factory_(this)) {
[email protected]3d7474ff2011-07-27 17:47:37224 DCHECK(browser_context_);
initial.commit09911bf2008-07-26 23:55:29225}
226
[email protected]d202a7c2012-01-04 07:53:47227NavigationControllerImpl::~NavigationControllerImpl() {
[email protected]cbab76d2008-10-13 22:42:47228 DiscardNonCommittedEntriesInternal();
initial.commit09911bf2008-07-26 23:55:29229}
230
[email protected]d202a7c2012-01-04 07:53:47231WebContents* NavigationControllerImpl::GetWebContents() const {
[email protected]2db9bd72012-04-13 20:20:56232 return web_contents_;
[email protected]fbc5e5f92012-01-02 06:08:32233}
234
[email protected]d202a7c2012-01-04 07:53:47235BrowserContext* NavigationControllerImpl::GetBrowserContext() const {
[email protected]a26023822011-12-29 00:23:55236 return browser_context_;
237}
238
[email protected]d202a7c2012-01-04 07:53:47239void NavigationControllerImpl::SetBrowserContext(
240 BrowserContext* browser_context) {
[email protected]cdcb1dee2012-01-04 00:46:20241 browser_context_ = browser_context;
242}
243
[email protected]d202a7c2012-01-04 07:53:47244void NavigationControllerImpl::Restore(
[email protected]5e369672009-11-03 23:48:30245 int selected_navigation,
[email protected]2ca1ea662012-10-04 02:26:36246 RestoreType type,
[email protected]10f417c52011-12-28 21:04:23247 std::vector<NavigationEntry*>* entries) {
[email protected]ce3fa3c2009-04-20 19:55:57248 // Verify that this controller is unused and that the input is valid.
[email protected]a26023822011-12-29 00:23:55249 DCHECK(GetEntryCount() == 0 && !GetPendingEntry());
[email protected]ce3fa3c2009-04-20 19:55:57250 DCHECK(selected_navigation >= 0 &&
[email protected]03838e22011-06-06 15:27:14251 selected_navigation < static_cast<int>(entries->size()));
[email protected]ce3fa3c2009-04-20 19:55:57252
[email protected]ce3fa3c2009-04-20 19:55:57253 needs_reload_ = true;
[email protected]ad23a092011-12-28 07:02:04254 for (size_t i = 0; i < entries->size(); ++i) {
[email protected]10f417c52011-12-28 21:04:23255 NavigationEntryImpl* entry =
256 NavigationEntryImpl::FromNavigationEntry((*entries)[i]);
257 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry));
[email protected]ad23a092011-12-28 07:02:04258 }
[email protected]03838e22011-06-06 15:27:14259 entries->clear();
[email protected]ce3fa3c2009-04-20 19:55:57260
261 // And finish the restore.
[email protected]2ca1ea662012-10-04 02:26:36262 FinishRestore(selected_navigation, type);
[email protected]ce3fa3c2009-04-20 19:55:57263}
264
[email protected]d202a7c2012-01-04 07:53:47265void NavigationControllerImpl::Reload(bool check_for_repost) {
[email protected]1ccb3568d2010-02-19 10:51:16266 ReloadInternal(check_for_repost, RELOAD);
267}
[email protected]d202a7c2012-01-04 07:53:47268void NavigationControllerImpl::ReloadIgnoringCache(bool check_for_repost) {
[email protected]1ccb3568d2010-02-19 10:51:16269 ReloadInternal(check_for_repost, RELOAD_IGNORING_CACHE);
270}
[email protected]7c16976c2012-08-04 02:38:23271void NavigationControllerImpl::ReloadOriginalRequestURL(bool check_for_repost) {
272 ReloadInternal(check_for_repost, RELOAD_ORIGINAL_REQUEST_URL);
273}
[email protected]1ccb3568d2010-02-19 10:51:16274
[email protected]d202a7c2012-01-04 07:53:47275void NavigationControllerImpl::ReloadInternal(bool check_for_repost,
276 ReloadType reload_type) {
[email protected]669e0ba2012-08-30 23:57:36277 if (transient_entry_index_ != -1) {
278 // If an interstitial is showing, treat a reload as a navigation to the
279 // transient entry's URL.
[email protected]8ff00d72012-10-23 19:12:21280 NavigationEntryImpl* active_entry =
[email protected]669e0ba2012-08-30 23:57:36281 NavigationEntryImpl::FromNavigationEntry(GetActiveEntry());
282 if (!active_entry)
283 return;
284 LoadURL(active_entry->GetURL(),
[email protected]8ff00d72012-10-23 19:12:21285 Referrer(),
286 PAGE_TRANSITION_RELOAD,
[email protected]669e0ba2012-08-30 23:57:36287 active_entry->extra_headers());
[email protected]cbab76d2008-10-13 22:42:47288 return;
[email protected]669e0ba2012-08-30 23:57:36289 }
[email protected]cbab76d2008-10-13 22:42:47290
291 DiscardNonCommittedEntriesInternal();
initial.commit09911bf2008-07-26 23:55:29292 int current_index = GetCurrentEntryIndex();
[email protected]106a0812010-03-18 00:15:12293 // If we are no where, then we can't reload. TODO(darin): We should add a
294 // CanReload method.
295 if (current_index == -1) {
296 return;
297 }
298
[email protected]cdcb1dee2012-01-04 00:46:20299 if (g_check_for_repost && check_for_repost &&
[email protected]36fc0392011-12-25 03:59:51300 GetEntryAtIndex(current_index)->GetHasPostData()) {
[email protected]a3a1d142008-12-19 00:42:30301 // The user is asking to reload a page with POST data. Prompt to make sure
[email protected]b5bb35f2009-02-05 20:17:07302 // they really want to do this. If they do, the dialog will call us back
303 // with check_for_repost = false.
[email protected]8ff00d72012-10-23 19:12:21304 NotificationService::current()->Notify(
305 NOTIFICATION_REPOST_WARNING_SHOWN,
306 Source<NavigationController>(this),
307 NotificationService::NoDetails());
[email protected]965bb092010-04-09 11:59:02308
[email protected]106a0812010-03-18 00:15:12309 pending_reload_ = reload_type;
[email protected]2db9bd72012-04-13 20:20:56310 web_contents_->Activate();
311 web_contents_->GetDelegate()->ShowRepostFormWarningDialog(web_contents_);
initial.commit09911bf2008-07-26 23:55:29312 } else {
[email protected]cbab76d2008-10-13 22:42:47313 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:20314
[email protected]bcd904482012-02-01 01:54:22315 NavigationEntryImpl* entry = entries_[current_index].get();
316 SiteInstanceImpl* site_instance = entry->site_instance();
317 DCHECK(site_instance);
[email protected]c3b3d952012-01-31 12:52:26318
[email protected]bcd904482012-02-01 01:54:22319 // If we are reloading an entry that no longer belongs to the current
320 // site instance (for example, refreshing a page for just installed app),
321 // the reload must happen in a new process.
322 // The new entry must have a new page_id and site instance, so it behaves
323 // as new navigation (which happens to clear forward history).
[email protected]7e58cb272012-03-30 21:22:30324 // Tabs that are discarded due to low memory conditions may not have a site
325 // instance, and should not be treated as a cross-site reload.
326 if (site_instance &&
327 site_instance->HasWrongProcessForURL(entry->GetURL())) {
[email protected]bcd904482012-02-01 01:54:22328 // Create a navigation entry that resembles the current one, but do not
[email protected]688aa65c62012-09-28 04:32:22329 // copy page id, site instance, content state, or timestamp.
[email protected]bcd904482012-02-01 01:54:22330 NavigationEntryImpl* nav_entry = NavigationEntryImpl::FromNavigationEntry(
331 CreateNavigationEntry(
332 entry->GetURL(), entry->GetReferrer(), entry->GetTransitionType(),
333 false, entry->extra_headers(), browser_context_));
[email protected]c3b3d952012-01-31 12:52:26334
[email protected]11535962012-02-09 21:02:10335 // Mark the reload type as NO_RELOAD, so navigation will not be considered
336 // a reload in the renderer.
337 reload_type = NavigationController::NO_RELOAD;
338
[email protected]e2caa032012-11-15 23:29:18339 nav_entry->set_should_replace_entry(true);
[email protected]bcd904482012-02-01 01:54:22340 pending_entry_ = nav_entry;
341 } else {
342 pending_entry_index_ = current_index;
343
344 // The title of the page being reloaded might have been removed in the
345 // meanwhile, so we need to revert to the default title upon reload and
346 // invalidate the previously cached title (SetTitle will do both).
347 // See Chromium issue 96041.
348 entries_[pending_entry_index_]->SetTitle(string16());
349
[email protected]8ff00d72012-10-23 19:12:21350 entries_[pending_entry_index_]->SetTransitionType(PAGE_TRANSITION_RELOAD);
[email protected]bcd904482012-02-01 01:54:22351 }
352
[email protected]1ccb3568d2010-02-19 10:51:16353 NavigateToPendingEntry(reload_type);
initial.commit09911bf2008-07-26 23:55:29354 }
355}
356
[email protected]d202a7c2012-01-04 07:53:47357void NavigationControllerImpl::CancelPendingReload() {
[email protected]106a0812010-03-18 00:15:12358 DCHECK(pending_reload_ != NO_RELOAD);
359 pending_reload_ = NO_RELOAD;
360}
361
[email protected]d202a7c2012-01-04 07:53:47362void NavigationControllerImpl::ContinuePendingReload() {
[email protected]106a0812010-03-18 00:15:12363 if (pending_reload_ == NO_RELOAD) {
364 NOTREACHED();
365 } else {
366 ReloadInternal(false, pending_reload_);
[email protected]965bb092010-04-09 11:59:02367 pending_reload_ = NO_RELOAD;
[email protected]106a0812010-03-18 00:15:12368 }
369}
370
[email protected]d202a7c2012-01-04 07:53:47371bool NavigationControllerImpl::IsInitialNavigation() {
[email protected]27ba81c2012-08-21 17:04:09372 return is_initial_navigation_;
[email protected]c70f9b82010-04-21 07:31:11373}
374
[email protected]d202a7c2012-01-04 07:53:47375NavigationEntryImpl* NavigationControllerImpl::GetEntryWithPageID(
[email protected]b6583592012-01-25 19:52:33376 SiteInstance* instance, int32 page_id) const {
[email protected]7f0005a2009-04-15 03:25:11377 int index = GetEntryIndexWithPageID(instance, page_id);
[email protected]765b35502008-08-21 00:51:20378 return (index != -1) ? entries_[index].get() : NULL;
379}
380
[email protected]d202a7c2012-01-04 07:53:47381void NavigationControllerImpl::LoadEntry(NavigationEntryImpl* entry) {
[email protected]419a0572011-04-18 22:21:46382 // Don't navigate to URLs disabled by policy. This prevents showing the URL
383 // on the Omnibar when it is also going to be blocked by
384 // ChildProcessSecurityPolicy::CanRequestURL.
[email protected]b9535422012-02-09 01:47:59385 ChildProcessSecurityPolicyImpl* policy =
386 ChildProcessSecurityPolicyImpl::GetInstance();
[email protected]36fc0392011-12-25 03:59:51387 if (policy->IsDisabledScheme(entry->GetURL().scheme()) ||
388 policy->IsDisabledScheme(entry->GetVirtualURL().scheme())) {
[email protected]419a0572011-04-18 22:21:46389 VLOG(1) << "URL not loaded because the scheme is blocked by policy: "
[email protected]36fc0392011-12-25 03:59:51390 << entry->GetURL();
[email protected]419a0572011-04-18 22:21:46391 delete entry;
392 return;
393 }
394
[email protected]765b35502008-08-21 00:51:20395 // When navigating to a new page, we don't know for sure if we will actually
396 // end up leaving the current page. The new page load could for example
397 // result in a download or a 'no content' response (e.g., a mailto: URL).
[email protected]cbab76d2008-10-13 22:42:47398 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:20399 pending_entry_ = entry;
[email protected]8ff00d72012-10-23 19:12:21400 NotificationService::current()->Notify(
401 NOTIFICATION_NAV_ENTRY_PENDING,
402 Source<NavigationController>(this),
403 Details<NavigationEntry>(entry));
[email protected]1ccb3568d2010-02-19 10:51:16404 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20405}
406
[email protected]d202a7c2012-01-04 07:53:47407NavigationEntry* NavigationControllerImpl::GetActiveEntry() const {
[email protected]cbab76d2008-10-13 22:42:47408 if (transient_entry_index_ != -1)
409 return entries_[transient_entry_index_].get();
410 if (pending_entry_)
411 return pending_entry_;
412 return GetLastCommittedEntry();
[email protected]765b35502008-08-21 00:51:20413}
414
[email protected]d202a7c2012-01-04 07:53:47415NavigationEntry* NavigationControllerImpl::GetVisibleEntry() const {
[email protected]867e1f92011-08-30 19:01:19416 if (transient_entry_index_ != -1)
417 return entries_[transient_entry_index_].get();
[email protected]e47ae9472011-10-13 19:48:34418 // Only return the pending_entry for new (non-history), browser-initiated
419 // navigations, in order to prevent URL spoof attacks.
420 // Ideally we would also show the pending entry's URL for new renderer-
421 // initiated navigations with no last committed entry (e.g., a link opening
422 // in a new tab), but an attacker can insert content into the about:blank
423 // page while the pending URL loads in that case.
424 if (pending_entry_ &&
[email protected]36fc0392011-12-25 03:59:51425 pending_entry_->GetPageID() == -1 &&
[email protected]e47ae9472011-10-13 19:48:34426 !pending_entry_->is_renderer_initiated())
[email protected]867e1f92011-08-30 19:01:19427 return pending_entry_;
428 return GetLastCommittedEntry();
429}
430
[email protected]d202a7c2012-01-04 07:53:47431int NavigationControllerImpl::GetCurrentEntryIndex() const {
[email protected]cbab76d2008-10-13 22:42:47432 if (transient_entry_index_ != -1)
433 return transient_entry_index_;
[email protected]765b35502008-08-21 00:51:20434 if (pending_entry_index_ != -1)
435 return pending_entry_index_;
436 return last_committed_entry_index_;
437}
438
[email protected]d202a7c2012-01-04 07:53:47439NavigationEntry* NavigationControllerImpl::GetLastCommittedEntry() const {
[email protected]765b35502008-08-21 00:51:20440 if (last_committed_entry_index_ == -1)
441 return NULL;
442 return entries_[last_committed_entry_index_].get();
443}
444
[email protected]d202a7c2012-01-04 07:53:47445bool NavigationControllerImpl::CanViewSource() const {
[email protected]9d86c4982013-01-09 00:38:34446 const std::string& mime_type = web_contents_->GetContentsMimeType();
447 bool is_viewable_mime_type = net::IsSupportedNonImageMimeType(mime_type) &&
448 !net::IsSupportedMediaMimeType(mime_type);
[email protected]10f417c52011-12-28 21:04:23449 NavigationEntry* active_entry = GetActiveEntry();
[email protected]31682282010-01-15 18:05:16450 return active_entry && !active_entry->IsViewSourceMode() &&
[email protected]9d86c4982013-01-09 00:38:34451 is_viewable_mime_type && !web_contents_->GetInterstitialPage();
[email protected]31682282010-01-15 18:05:16452}
453
[email protected]d202a7c2012-01-04 07:53:47454int NavigationControllerImpl::GetLastCommittedEntryIndex() const {
[email protected]a26023822011-12-29 00:23:55455 return last_committed_entry_index_;
456}
457
[email protected]d202a7c2012-01-04 07:53:47458int NavigationControllerImpl::GetEntryCount() const {
[email protected]944822b2012-03-02 20:57:25459 DCHECK(entries_.size() <= max_entry_count());
[email protected]a26023822011-12-29 00:23:55460 return static_cast<int>(entries_.size());
461}
462
[email protected]d202a7c2012-01-04 07:53:47463NavigationEntry* NavigationControllerImpl::GetEntryAtIndex(
[email protected]022af742011-12-28 18:37:25464 int index) const {
465 return entries_.at(index).get();
466}
467
[email protected]d202a7c2012-01-04 07:53:47468NavigationEntry* NavigationControllerImpl::GetEntryAtOffset(
[email protected]022af742011-12-28 18:37:25469 int offset) const {
[email protected]9ba14052012-06-22 23:50:03470 int index = GetIndexForOffset(offset);
[email protected]a26023822011-12-29 00:23:55471 if (index < 0 || index >= GetEntryCount())
[email protected]765b35502008-08-21 00:51:20472 return NULL;
473
474 return entries_[index].get();
475}
476
[email protected]9ba14052012-06-22 23:50:03477int NavigationControllerImpl::GetIndexForOffset(int offset) const {
[email protected]7bc2b032012-12-19 22:45:46478 return GetCurrentEntryIndex() + offset;
[email protected]9ba14052012-06-22 23:50:03479}
480
[email protected]9677a3c2012-12-22 04:18:58481void NavigationControllerImpl::TakeScreenshot() {
[email protected]9fb64a12013-02-11 21:16:01482 static bool overscroll_enabled = CommandLine::ForCurrentProcess()->
483 HasSwitch(switches::kEnableOverscrollHistoryNavigation);
[email protected]9677a3c2012-12-22 04:18:58484 if (!overscroll_enabled)
485 return;
486
487 NavigationEntryImpl* entry =
488 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry());
489 if (!entry)
490 return;
491
492 RenderViewHost* render_view_host = web_contents_->GetRenderViewHost();
[email protected]6c83c382013-01-24 20:46:01493 if (!static_cast<RenderViewHostImpl*>
494 (render_view_host)->overscroll_controller()) {
495 return;
496 }
[email protected]9677a3c2012-12-22 04:18:58497 content::RenderWidgetHostView* view = render_view_host->GetView();
498 if (!view)
499 return;
500
[email protected]e3d92a7f2013-01-10 02:35:05501 if (!take_screenshot_callback_.is_null())
502 take_screenshot_callback_.Run(render_view_host);
503
[email protected]9677a3c2012-12-22 04:18:58504 render_view_host->CopyFromBackingStore(gfx::Rect(),
505 view->GetViewBounds().size(),
506 base::Bind(&NavigationControllerImpl::OnScreenshotTaken,
[email protected]8cea7892013-02-06 06:49:31507 take_screenshot_factory_.GetWeakPtr(),
[email protected]d748d0f2013-02-02 23:31:07508 entry->GetUniqueID()));
[email protected]9677a3c2012-12-22 04:18:58509}
510
511void NavigationControllerImpl::OnScreenshotTaken(
512 int unique_id,
[email protected]d748d0f2013-02-02 23:31:07513 bool success,
514 const SkBitmap& bitmap) {
[email protected]9677a3c2012-12-22 04:18:58515 NavigationEntryImpl* entry = NULL;
516 for (NavigationEntries::iterator i = entries_.begin();
517 i != entries_.end();
518 ++i) {
519 if ((*i)->GetUniqueID() == unique_id) {
520 entry = (*i).get();
521 break;
522 }
523 }
524
525 if (!entry) {
526 LOG(ERROR) << "Invalid entry with unique id: " << unique_id;
527 return;
528 }
529
[email protected]d338e3d62013-02-05 08:20:28530 if (!success || bitmap.empty() || bitmap.isNull()) {
[email protected]06211bd9b2013-01-18 02:12:53531 ClearScreenshot(entry);
[email protected]79a7d9a2013-01-16 03:45:52532 return;
533 }
534
[email protected]9677a3c2012-12-22 04:18:58535 std::vector<unsigned char> data;
[email protected]d748d0f2013-02-02 23:31:07536 if (gfx::PNGCodec::EncodeBGRASkBitmap(bitmap, true, &data)) {
[email protected]9677a3c2012-12-22 04:18:58537 entry->SetScreenshotPNGData(data);
[email protected]06211bd9b2013-01-18 02:12:53538 PurgeScreenshotsIfNecessary();
539 } else {
540 ClearScreenshot(entry);
541 }
[email protected]06211bd9b2013-01-18 02:12:53542}
543
[email protected]c87b9092013-02-03 05:41:42544bool NavigationControllerImpl::ClearScreenshot(NavigationEntryImpl* entry) {
545 if (!entry->screenshot())
546 return false;
547
548 entry->SetScreenshotPNGData(std::vector<unsigned char>());
549 return true;
[email protected]06211bd9b2013-01-18 02:12:53550}
551
552void NavigationControllerImpl::PurgeScreenshotsIfNecessary() {
553 // Allow only a certain number of entries to keep screenshots.
554 const int kMaxScreenshots = 10;
[email protected]c87b9092013-02-03 05:41:42555 int screenshot_count = GetScreenshotCount();
556 if (screenshot_count < kMaxScreenshots)
[email protected]06211bd9b2013-01-18 02:12:53557 return;
558
559 const int current = GetCurrentEntryIndex();
560 const int num_entries = GetEntryCount();
561 int available_slots = kMaxScreenshots;
562 if (NavigationEntryImpl::FromNavigationEntry(
563 GetEntryAtIndex(current))->screenshot())
564 --available_slots;
565
566 // Keep screenshots closer to the current navigation entry, and purge the ones
567 // that are farther away from it. So in each step, look at the entries at
568 // each offset on both the back and forward history, and start counting them
569 // to make sure that the correct number of screenshots are kept in memory.
570 // Note that it is possible for some entries to be missing screenshots (e.g.
571 // when taking the screenshot failed for some reason). So there may be a state
572 // where there are a lot of entries in the back history, but none of them has
573 // any screenshot. In such cases, keep the screenshots for |kMaxScreenshots|
574 // entries in the forward history list.
575 int back = current - 1;
576 int forward = current + 1;
577 while (available_slots > 0 && (back >= 0 || forward < num_entries)) {
578 if (back >= 0) {
579 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
580 GetEntryAtIndex(back));
581 if (entry->screenshot())
582 --available_slots;
583 --back;
584 }
585
586 if (available_slots > 0 && forward < num_entries) {
587 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
588 GetEntryAtIndex(forward));
589 if (entry->screenshot())
590 --available_slots;
591 ++forward;
592 }
593 }
594
595 // Purge any screenshot at |back| or lower indices, and |forward| or higher
596 // indices.
597
[email protected]c87b9092013-02-03 05:41:42598 while (screenshot_count > kMaxScreenshots && back >= 0) {
[email protected]06211bd9b2013-01-18 02:12:53599 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
600 GetEntryAtIndex(back));
[email protected]c87b9092013-02-03 05:41:42601 if (ClearScreenshot(entry))
602 --screenshot_count;
[email protected]06211bd9b2013-01-18 02:12:53603 --back;
604 }
605
[email protected]c87b9092013-02-03 05:41:42606 while (screenshot_count > kMaxScreenshots && forward < num_entries) {
[email protected]06211bd9b2013-01-18 02:12:53607 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
608 GetEntryAtIndex(forward));
[email protected]c87b9092013-02-03 05:41:42609 if (ClearScreenshot(entry))
610 --screenshot_count;
[email protected]06211bd9b2013-01-18 02:12:53611 ++forward;
612 }
[email protected]c87b9092013-02-03 05:41:42613 CHECK_GE(screenshot_count, 0);
614 CHECK_LE(screenshot_count, kMaxScreenshots);
615}
616
617int NavigationControllerImpl::GetScreenshotCount() const {
618 int count = 0;
619 for (NavigationEntries::const_iterator it = entries_.begin();
620 it != entries_.end(); ++it) {
621 NavigationEntryImpl* entry =
622 NavigationEntryImpl::FromNavigationEntry(it->get());
623 if (entry->screenshot())
624 count++;
625 }
626 return count;
[email protected]9677a3c2012-12-22 04:18:58627}
628
[email protected]d202a7c2012-01-04 07:53:47629bool NavigationControllerImpl::CanGoBack() const {
[email protected]765b35502008-08-21 00:51:20630 return entries_.size() > 1 && GetCurrentEntryIndex() > 0;
631}
632
[email protected]d202a7c2012-01-04 07:53:47633bool NavigationControllerImpl::CanGoForward() const {
[email protected]765b35502008-08-21 00:51:20634 int index = GetCurrentEntryIndex();
635 return index >= 0 && index < (static_cast<int>(entries_.size()) - 1);
636}
637
[email protected]9ba14052012-06-22 23:50:03638bool NavigationControllerImpl::CanGoToOffset(int offset) const {
639 int index = GetIndexForOffset(offset);
640 return index >= 0 && index < GetEntryCount();
641}
642
[email protected]d202a7c2012-01-04 07:53:47643void NavigationControllerImpl::GoBack() {
[email protected]765b35502008-08-21 00:51:20644 if (!CanGoBack()) {
645 NOTREACHED();
646 return;
647 }
648
649 // Base the navigation on where we are now...
650 int current_index = GetCurrentEntryIndex();
651
[email protected]cbab76d2008-10-13 22:42:47652 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20653
654 pending_entry_index_ = current_index - 1;
[email protected]022af742011-12-28 18:37:25655 entries_[pending_entry_index_]->SetTransitionType(
[email protected]8ff00d72012-10-23 19:12:21656 PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51657 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]8ff00d72012-10-23 19:12:21658 PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16659 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20660}
661
[email protected]d202a7c2012-01-04 07:53:47662void NavigationControllerImpl::GoForward() {
[email protected]765b35502008-08-21 00:51:20663 if (!CanGoForward()) {
664 NOTREACHED();
665 return;
666 }
667
[email protected]cbab76d2008-10-13 22:42:47668 bool transient = (transient_entry_index_ != -1);
669
[email protected]765b35502008-08-21 00:51:20670 // Base the navigation on where we are now...
671 int current_index = GetCurrentEntryIndex();
672
[email protected]cbab76d2008-10-13 22:42:47673 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20674
[email protected]cbab76d2008-10-13 22:42:47675 pending_entry_index_ = current_index;
676 // If there was a transient entry, we removed it making the current index
677 // the next page.
678 if (!transient)
679 pending_entry_index_++;
680
[email protected]022af742011-12-28 18:37:25681 entries_[pending_entry_index_]->SetTransitionType(
[email protected]8ff00d72012-10-23 19:12:21682 PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51683 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]8ff00d72012-10-23 19:12:21684 PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16685 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20686}
687
[email protected]d202a7c2012-01-04 07:53:47688void NavigationControllerImpl::GoToIndex(int index) {
[email protected]765b35502008-08-21 00:51:20689 if (index < 0 || index >= static_cast<int>(entries_.size())) {
690 NOTREACHED();
691 return;
692 }
693
[email protected]cbab76d2008-10-13 22:42:47694 if (transient_entry_index_ != -1) {
695 if (index == transient_entry_index_) {
696 // Nothing to do when navigating to the transient.
697 return;
698 }
699 if (index > transient_entry_index_) {
700 // Removing the transient is goint to shift all entries by 1.
701 index--;
702 }
703 }
704
705 DiscardNonCommittedEntries();
[email protected]765b35502008-08-21 00:51:20706
707 pending_entry_index_ = index;
[email protected]022af742011-12-28 18:37:25708 entries_[pending_entry_index_]->SetTransitionType(
[email protected]8ff00d72012-10-23 19:12:21709 PageTransitionFromInt(
[email protected]36fc0392011-12-25 03:59:51710 entries_[pending_entry_index_]->GetTransitionType() |
[email protected]8ff00d72012-10-23 19:12:21711 PAGE_TRANSITION_FORWARD_BACK));
[email protected]1ccb3568d2010-02-19 10:51:16712 NavigateToPendingEntry(NO_RELOAD);
[email protected]765b35502008-08-21 00:51:20713}
714
[email protected]d202a7c2012-01-04 07:53:47715void NavigationControllerImpl::GoToOffset(int offset) {
[email protected]9ba14052012-06-22 23:50:03716 if (!CanGoToOffset(offset))
[email protected]765b35502008-08-21 00:51:20717 return;
718
[email protected]9ba14052012-06-22 23:50:03719 GoToIndex(GetIndexForOffset(offset));
[email protected]765b35502008-08-21 00:51:20720}
721
[email protected]d202a7c2012-01-04 07:53:47722void NavigationControllerImpl::RemoveEntryAtIndex(int index) {
[email protected]6a13a6c2011-12-20 21:47:12723 if (index == last_committed_entry_index_)
724 return;
725
[email protected]43032342011-03-21 14:10:31726 RemoveEntryAtIndexInternal(index);
[email protected]cbab76d2008-10-13 22:42:47727}
728
[email protected]d202a7c2012-01-04 07:53:47729void NavigationControllerImpl::UpdateVirtualURLToURL(
[email protected]10f417c52011-12-28 21:04:23730 NavigationEntryImpl* entry, const GURL& new_url) {
[email protected]38178a42009-12-17 18:58:32731 GURL new_virtual_url(new_url);
[email protected]825b1662012-03-12 19:07:31732 if (BrowserURLHandlerImpl::GetInstance()->ReverseURLRewrite(
[email protected]36fc0392011-12-25 03:59:51733 &new_virtual_url, entry->GetVirtualURL(), browser_context_)) {
734 entry->SetVirtualURL(new_virtual_url);
[email protected]38178a42009-12-17 18:58:32735 }
736}
737
[email protected]d202a7c2012-01-04 07:53:47738void NavigationControllerImpl::LoadURL(
[email protected]6c6b02d2011-09-02 03:36:47739 const GURL& url,
[email protected]8ff00d72012-10-23 19:12:21740 const Referrer& referrer,
741 PageTransition transition,
[email protected]6c6b02d2011-09-02 03:36:47742 const std::string& extra_headers) {
[email protected]cf002332012-08-14 19:17:47743 LoadURLParams params(url);
744 params.referrer = referrer;
745 params.transition_type = transition;
746 params.extra_headers = extra_headers;
747 LoadURLWithParams(params);
748}
749
750void NavigationControllerImpl::LoadURLWithParams(const LoadURLParams& params) {
[email protected]8ff00d72012-10-23 19:12:21751 if (HandleDebugURL(params.url, params.transition_type))
[email protected]8bf1048012012-02-08 01:22:18752 return;
753
[email protected]cf002332012-08-14 19:17:47754 // Checks based on params.load_type.
755 switch (params.load_type) {
756 case LOAD_TYPE_DEFAULT:
757 break;
758 case LOAD_TYPE_BROWSER_INITIATED_HTTP_POST:
759 if (!params.url.SchemeIs(chrome::kHttpScheme) &&
760 !params.url.SchemeIs(chrome::kHttpsScheme)) {
761 NOTREACHED() << "Http post load must use http(s) scheme.";
762 return;
763 }
764 break;
765 case LOAD_TYPE_DATA:
766 if (!params.url.SchemeIs(chrome::kDataScheme)) {
767 NOTREACHED() << "Data load must use data scheme.";
768 return;
769 }
770 break;
771 default:
772 NOTREACHED();
773 break;
774 };
[email protected]e47ae9472011-10-13 19:48:34775
[email protected]e47ae9472011-10-13 19:48:34776 // The user initiated a load, we don't need to reload anymore.
777 needs_reload_ = false;
778
[email protected]cf002332012-08-14 19:17:47779 bool override = false;
780 switch (params.override_user_agent) {
781 case UA_OVERRIDE_INHERIT:
782 override = ShouldKeepOverride(GetLastCommittedEntry());
783 break;
784 case UA_OVERRIDE_TRUE:
785 override = true;
786 break;
787 case UA_OVERRIDE_FALSE:
788 override = false;
789 break;
790 default:
791 NOTREACHED();
792 break;
[email protected]d1ef81d2012-07-24 11:39:36793 }
794
[email protected]d1ef81d2012-07-24 11:39:36795 NavigationEntryImpl* entry = NavigationEntryImpl::FromNavigationEntry(
796 CreateNavigationEntry(
[email protected]cf002332012-08-14 19:17:47797 params.url,
798 params.referrer,
799 params.transition_type,
800 params.is_renderer_initiated,
801 params.extra_headers,
[email protected]d1ef81d2012-07-24 11:39:36802 browser_context_));
[email protected]e2caa032012-11-15 23:29:18803 if (params.is_cross_site_redirect)
804 entry->set_should_replace_entry(true);
[email protected]cf002332012-08-14 19:17:47805 entry->SetIsOverridingUserAgent(override);
806 entry->set_transferred_global_request_id(
807 params.transferred_global_request_id);
[email protected]d2494ff2013-02-20 08:22:37808 entry->SetFrameToNavigate(params.frame_name);
[email protected]d1ef81d2012-07-24 11:39:36809
[email protected]cf002332012-08-14 19:17:47810 switch (params.load_type) {
811 case LOAD_TYPE_DEFAULT:
812 break;
813 case LOAD_TYPE_BROWSER_INITIATED_HTTP_POST:
814 entry->SetHasPostData(true);
815 entry->SetBrowserInitiatedPostData(
816 params.browser_initiated_post_data);
817 break;
818 case LOAD_TYPE_DATA:
819 entry->SetBaseURLForDataURL(params.base_url_for_data_url);
820 entry->SetVirtualURL(params.virtual_url_for_data_url);
[email protected]951a64832012-10-11 16:26:37821 entry->SetCanLoadLocalResources(params.can_load_local_resources);
[email protected]cf002332012-08-14 19:17:47822 break;
823 default:
824 NOTREACHED();
825 break;
826 };
[email protected]132e281a2012-07-31 18:32:44827
828 LoadEntry(entry);
829}
830
[email protected]d202a7c2012-01-04 07:53:47831void NavigationControllerImpl::DocumentLoadedInFrame() {
[email protected]27ba81c2012-08-21 17:04:09832 is_initial_navigation_ = false;
[email protected]09b8f82f2009-06-16 20:22:11833}
834
[email protected]d202a7c2012-01-04 07:53:47835bool NavigationControllerImpl::RendererDidNavigate(
[email protected]e9ba4472008-09-14 15:42:43836 const ViewHostMsg_FrameNavigate_Params& params,
[email protected]8ff00d72012-10-23 19:12:21837 LoadCommittedDetails* details) {
[email protected]0e8db942008-09-24 21:21:48838 // Save the previous state before we clobber it.
839 if (GetLastCommittedEntry()) {
[email protected]36fc0392011-12-25 03:59:51840 details->previous_url = GetLastCommittedEntry()->GetURL();
[email protected]a26023822011-12-29 00:23:55841 details->previous_entry_index = GetLastCommittedEntryIndex();
[email protected]0e8db942008-09-24 21:21:48842 } else {
843 details->previous_url = GURL();
844 details->previous_entry_index = -1;
845 }
[email protected]ecd9d8702008-08-28 22:10:17846
[email protected]77362eb2011-08-01 17:18:38847 // If we have a pending entry at this point, it should have a SiteInstance.
848 // Restored entries start out with a null SiteInstance, but we should have
849 // assigned one in NavigateToPendingEntry.
850 DCHECK(pending_entry_index_ == -1 || pending_entry_->site_instance());
[email protected]e9ba4472008-09-14 15:42:43851
[email protected]bcd904482012-02-01 01:54:22852 // If we are doing a cross-site reload, we need to replace the existing
853 // navigation entry, not add another entry to the history. This has the side
854 // effect of removing forward browsing history, if such existed.
[email protected]e2caa032012-11-15 23:29:18855 // Or if we are doing a cross-site redirect navigation,
856 // we will do a similar thing.
[email protected]4ac5fbe2012-09-01 02:19:59857 details->did_replace_entry =
[email protected]e2caa032012-11-15 23:29:18858 pending_entry_ && pending_entry_->should_replace_entry();
[email protected]bcd904482012-02-01 01:54:22859
[email protected]192d8c5e2010-02-23 07:26:32860 // is_in_page must be computed before the entry gets committed.
[email protected]ce760d742012-08-30 22:31:10861 details->is_in_page = IsURLInPageNavigation(
862 params.url, params.was_within_same_page);
[email protected]192d8c5e2010-02-23 07:26:32863
[email protected]e9ba4472008-09-14 15:42:43864 // Do navigation-type specific actions. These will make and commit an entry.
[email protected]0e8db942008-09-24 21:21:48865 details->type = ClassifyNavigation(params);
[email protected]4bf3522c2010-08-19 21:00:20866
[email protected]0e8db942008-09-24 21:21:48867 switch (details->type) {
[email protected]8ff00d72012-10-23 19:12:21868 case NAVIGATION_TYPE_NEW_PAGE:
[email protected]4ac5fbe2012-09-01 02:19:59869 RendererDidNavigateToNewPage(params, details->did_replace_entry);
[email protected]e9ba4472008-09-14 15:42:43870 break;
[email protected]8ff00d72012-10-23 19:12:21871 case NAVIGATION_TYPE_EXISTING_PAGE:
[email protected]e9ba4472008-09-14 15:42:43872 RendererDidNavigateToExistingPage(params);
873 break;
[email protected]8ff00d72012-10-23 19:12:21874 case NAVIGATION_TYPE_SAME_PAGE:
[email protected]e9ba4472008-09-14 15:42:43875 RendererDidNavigateToSamePage(params);
876 break;
[email protected]8ff00d72012-10-23 19:12:21877 case NAVIGATION_TYPE_IN_PAGE:
[email protected]4ac5fbe2012-09-01 02:19:59878 RendererDidNavigateInPage(params, &details->did_replace_entry);
[email protected]e9ba4472008-09-14 15:42:43879 break;
[email protected]8ff00d72012-10-23 19:12:21880 case NAVIGATION_TYPE_NEW_SUBFRAME:
[email protected]e9ba4472008-09-14 15:42:43881 RendererDidNavigateNewSubframe(params);
882 break;
[email protected]8ff00d72012-10-23 19:12:21883 case NAVIGATION_TYPE_AUTO_SUBFRAME:
[email protected]e9ba4472008-09-14 15:42:43884 if (!RendererDidNavigateAutoSubframe(params))
885 return false;
886 break;
[email protected]8ff00d72012-10-23 19:12:21887 case NAVIGATION_TYPE_NAV_IGNORE:
[email protected]20d1c992011-04-12 21:17:49888 // If a pending navigation was in progress, this canceled it. We should
889 // discard it and make sure it is removed from the URL bar. After that,
890 // there is nothing we can do with this navigation, so we just return to
[email protected]e9ba4472008-09-14 15:42:43891 // the caller that nothing has happened.
[email protected]20d1c992011-04-12 21:17:49892 if (pending_entry_) {
893 DiscardNonCommittedEntries();
[email protected]8ff00d72012-10-23 19:12:21894 web_contents_->NotifyNavigationStateChanged(INVALIDATE_TYPE_URL);
[email protected]20d1c992011-04-12 21:17:49895 }
[email protected]e9ba4472008-09-14 15:42:43896 return false;
897 default:
898 NOTREACHED();
[email protected]765b35502008-08-21 00:51:20899 }
900
[email protected]688aa65c62012-09-28 04:32:22901 // At this point, we know that the navigation has just completed, so
902 // record the time.
903 //
904 // TODO(akalin): Use "sane time" as described in
905 // http://www.chromium.org/developers/design-documents/sane-time .
[email protected]c5b88d82012-10-06 17:03:33906 base::Time timestamp =
907 time_smoother_.GetSmoothedTime(get_timestamp_callback_.Run());
908 DVLOG(1) << "Navigation finished at (smoothed) timestamp "
[email protected]688aa65c62012-09-28 04:32:22909 << timestamp.ToInternalValue();
910
[email protected]f233e4232013-02-23 00:55:14911 // We should not have a pending entry anymore. Clear it again in case any
912 // error cases above forgot to do so.
913 DiscardNonCommittedEntriesInternal();
914
[email protected]e9ba4472008-09-14 15:42:43915 // All committed entries should have nonempty content state so WebKit doesn't
916 // get confused when we go back to them (see the function for details).
[email protected]0f38dc4552011-02-25 11:24:00917 DCHECK(!params.content_state.empty());
[email protected]10f417c52011-12-28 21:04:23918 NavigationEntryImpl* active_entry =
[email protected]f233e4232013-02-23 00:55:14919 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry());
[email protected]688aa65c62012-09-28 04:32:22920 active_entry->SetTimestamp(timestamp);
[email protected]36fc0392011-12-25 03:59:51921 active_entry->SetContentState(params.content_state);
[email protected]132e281a2012-07-31 18:32:44922 // No longer needed since content state will hold the post data if any.
923 active_entry->SetBrowserInitiatedPostData(NULL);
924
[email protected]e47ae9472011-10-13 19:48:34925 // Once committed, we do not need to track if the entry was initiated by
926 // the renderer.
927 active_entry->set_is_renderer_initiated(false);
928
[email protected]49bd30e62011-03-22 20:12:59929 // The active entry's SiteInstance should match our SiteInstance.
[email protected]f233e4232013-02-23 00:55:14930 CHECK(active_entry->site_instance() == web_contents_->GetSiteInstance());
[email protected]49bd30e62011-03-22 20:12:59931
[email protected]e9ba4472008-09-14 15:42:43932 // Now prep the rest of the details for the notification and broadcast.
[email protected]0f38dc4552011-02-25 11:24:00933 details->entry = active_entry;
[email protected]2905f742011-10-13 03:51:58934 details->is_main_frame =
[email protected]8ff00d72012-10-23 19:12:21935 PageTransitionIsMainFrame(params.transition);
[email protected]f072d2ce2008-09-17 17:16:24936 details->serialized_security_info = params.security_info;
[email protected]2e39d2e2009-02-19 18:41:31937 details->http_status_code = params.http_status_code;
[email protected]93f230e02011-06-01 14:40:00938 NotifyNavigationEntryCommitted(details);
initial.commit09911bf2008-07-26 23:55:29939
[email protected]e9ba4472008-09-14 15:42:43940 return true;
initial.commit09911bf2008-07-26 23:55:29941}
942
[email protected]8ff00d72012-10-23 19:12:21943NavigationType NavigationControllerImpl::ClassifyNavigation(
[email protected]e9ba4472008-09-14 15:42:43944 const ViewHostMsg_FrameNavigate_Params& params) const {
[email protected]e9ba4472008-09-14 15:42:43945 if (params.page_id == -1) {
[email protected]eef9de32009-09-23 17:19:46946 // The renderer generates the page IDs, and so if it gives us the invalid
947 // page ID (-1) we know it didn't actually navigate. This happens in a few
948 // cases:
949 //
950 // - If a page makes a popup navigated to about blank, and then writes
951 // stuff like a subframe navigated to a real page. We'll get the commit
952 // for the subframe, but there won't be any commit for the outer page.
953 //
954 // - We were also getting these for failed loads (for example, bug 21849).
955 // The guess is that we get a "load commit" for the alternate error page,
956 // but that doesn't affect the page ID, so we get the "old" one, which
957 // could be invalid. This can also happen for a cross-site transition
958 // that causes us to swap processes. Then the error page load will be in
959 // a new process with no page IDs ever assigned (and hence a -1 value),
960 // yet the navigation controller still might have previous pages in its
961 // list.
962 //
963 // In these cases, there's nothing we can do with them, so ignore.
[email protected]8ff00d72012-10-23 19:12:21964 return NAVIGATION_TYPE_NAV_IGNORE;
[email protected]e9ba4472008-09-14 15:42:43965 }
966
[email protected]2db9bd72012-04-13 20:20:56967 if (params.page_id > web_contents_->GetMaxPageID()) {
[email protected]e9ba4472008-09-14 15:42:43968 // Greater page IDs than we've ever seen before are new pages. We may or may
969 // not have a pending entry for the page, and this may or may not be the
970 // main frame.
[email protected]8ff00d72012-10-23 19:12:21971 if (PageTransitionIsMainFrame(params.transition))
972 return NAVIGATION_TYPE_NEW_PAGE;
[email protected]4c27ba82008-09-24 16:49:09973
974 // When this is a new subframe navigation, we should have a committed page
975 // for which it's a suframe in. This may not be the case when an iframe is
976 // navigated on a popup navigated to about:blank (the iframe would be
977 // written into the popup by script on the main page). For these cases,
978 // there isn't any navigation stuff we can do, so just ignore it.
979 if (!GetLastCommittedEntry())
[email protected]8ff00d72012-10-23 19:12:21980 return NAVIGATION_TYPE_NAV_IGNORE;
[email protected]4c27ba82008-09-24 16:49:09981
982 // Valid subframe navigation.
[email protected]8ff00d72012-10-23 19:12:21983 return NAVIGATION_TYPE_NEW_SUBFRAME;
[email protected]e9ba4472008-09-14 15:42:43984 }
985
986 // Now we know that the notification is for an existing page. Find that entry.
987 int existing_entry_index = GetEntryIndexWithPageID(
[email protected]2db9bd72012-04-13 20:20:56988 web_contents_->GetSiteInstance(),
[email protected]e9ba4472008-09-14 15:42:43989 params.page_id);
990 if (existing_entry_index == -1) {
991 // The page was not found. It could have been pruned because of the limit on
992 // back/forward entries (not likely since we'll usually tell it to navigate
993 // to such entries). It could also mean that the renderer is smoking crack.
994 NOTREACHED();
[email protected]485e8232011-07-24 18:03:46995
996 // Because the unknown entry has committed, we risk showing the wrong URL in
997 // release builds. Instead, we'll kill the renderer process to be safe.
998 LOG(ERROR) << "terminating renderer for bad navigation: " << params.url;
[email protected]8ff00d72012-10-23 19:12:21999 RecordAction(UserMetricsAction("BadMessageTerminate_NC"));
[email protected]b69934e2011-10-29 02:51:521000
[email protected]7ec6f382011-11-11 01:28:171001 // Temporary code so we can get more information. Format:
[email protected]8c380582011-12-02 03:16:101002 // http://url/foo.html#page1#max3#frame1#ids:2_Nx,1_1x,3_2
1003 std::string temp = params.url.spec();
[email protected]7ec6f382011-11-11 01:28:171004 temp.append("#page");
[email protected]b69934e2011-10-29 02:51:521005 temp.append(base::IntToString(params.page_id));
[email protected]7ec6f382011-11-11 01:28:171006 temp.append("#max");
[email protected]2db9bd72012-04-13 20:20:561007 temp.append(base::IntToString(web_contents_->GetMaxPageID()));
[email protected]7ec6f382011-11-11 01:28:171008 temp.append("#frame");
1009 temp.append(base::IntToString(params.frame_id));
1010 temp.append("#ids");
1011 for (int i = 0; i < static_cast<int>(entries_.size()); ++i) {
[email protected]8c380582011-12-02 03:16:101012 // Append entry metadata (e.g., 3_7x):
1013 // 3: page_id
1014 // 7: SiteInstance ID, or N for null
1015 // x: appended if not from the current SiteInstance
[email protected]36fc0392011-12-25 03:59:511016 temp.append(base::IntToString(entries_[i]->GetPageID()));
[email protected]8c380582011-12-02 03:16:101017 temp.append("_");
1018 if (entries_[i]->site_instance())
[email protected]b6583592012-01-25 19:52:331019 temp.append(base::IntToString(entries_[i]->site_instance()->GetId()));
[email protected]7ec6f382011-11-11 01:28:171020 else
[email protected]8c380582011-12-02 03:16:101021 temp.append("N");
[email protected]2db9bd72012-04-13 20:20:561022 if (entries_[i]->site_instance() != web_contents_->GetSiteInstance())
[email protected]7ec6f382011-11-11 01:28:171023 temp.append("x");
1024 temp.append(",");
[email protected]b69934e2011-10-29 02:51:521025 }
1026 GURL url(temp);
[email protected]9f76c1e2012-03-05 15:15:581027 static_cast<RenderViewHostImpl*>(
[email protected]2db9bd72012-04-13 20:20:561028 web_contents_->GetRenderViewHost())->Send(
[email protected]9f76c1e2012-03-05 15:15:581029 new ViewMsg_TempCrashWithData(url));
[email protected]8ff00d72012-10-23 19:12:211030 return NAVIGATION_TYPE_NAV_IGNORE;
[email protected]e9ba4472008-09-14 15:42:431031 }
[email protected]10f417c52011-12-28 21:04:231032 NavigationEntryImpl* existing_entry = entries_[existing_entry_index].get();
[email protected]e9ba4472008-09-14 15:42:431033
[email protected]8ff00d72012-10-23 19:12:211034 if (!PageTransitionIsMainFrame(params.transition)) {
[email protected]e6035c22010-05-25 16:15:521035 // All manual subframes would get new IDs and were handled above, so we
1036 // know this is auto. Since the current page was found in the navigation
1037 // entry list, we're guaranteed to have a last committed entry.
1038 DCHECK(GetLastCommittedEntry());
[email protected]8ff00d72012-10-23 19:12:211039 return NAVIGATION_TYPE_AUTO_SUBFRAME;
[email protected]e6035c22010-05-25 16:15:521040 }
1041
1042 // Anything below here we know is a main frame navigation.
[email protected]e9ba4472008-09-14 15:42:431043 if (pending_entry_ &&
[email protected]e9ba4472008-09-14 15:42:431044 existing_entry != pending_entry_ &&
[email protected]36fc0392011-12-25 03:59:511045 pending_entry_->GetPageID() == -1 &&
[email protected]230c0012011-04-08 16:27:241046 existing_entry == GetLastCommittedEntry()) {
[email protected]e9ba4472008-09-14 15:42:431047 // In this case, we have a pending entry for a URL but WebCore didn't do a
1048 // new navigation. This happens when you press enter in the URL bar to
1049 // reload. We will create a pending entry, but WebKit will convert it to
1050 // a reload since it's the same page and not create a new entry for it
1051 // (the user doesn't want to have a new back/forward entry when they do
[email protected]230c0012011-04-08 16:27:241052 // this). If this matches the last committed entry, we want to just ignore
1053 // the pending entry and go back to where we were (the "existing entry").
[email protected]8ff00d72012-10-23 19:12:211054 return NAVIGATION_TYPE_SAME_PAGE;
[email protected]e9ba4472008-09-14 15:42:431055 }
1056
[email protected]fc60f222008-12-18 17:36:541057 // Any toplevel navigations with the same base (minus the reference fragment)
1058 // are in-page navigations. We weeded out subframe navigations above. Most of
1059 // the time this doesn't matter since WebKit doesn't tell us about subframe
1060 // navigations that don't actually navigate, but it can happen when there is
1061 // an encoding override (it always sends a navigation request).
[email protected]4ac5fbe2012-09-01 02:19:591062 if (AreURLsInPageNavigation(existing_entry->GetURL(), params.url,
1063 params.was_within_same_page)) {
[email protected]8ff00d72012-10-23 19:12:211064 return NAVIGATION_TYPE_IN_PAGE;
[email protected]4ac5fbe2012-09-01 02:19:591065 }
[email protected]fc60f222008-12-18 17:36:541066
[email protected]e9ba4472008-09-14 15:42:431067 // Since we weeded out "new" navigations above, we know this is an existing
[email protected]4c27ba82008-09-24 16:49:091068 // (back/forward) navigation.
[email protected]8ff00d72012-10-23 19:12:211069 return NAVIGATION_TYPE_EXISTING_PAGE;
[email protected]e9ba4472008-09-14 15:42:431070}
1071
[email protected]d202a7c2012-01-04 07:53:471072bool NavigationControllerImpl::IsRedirect(
[email protected]09b8f82f2009-06-16 20:22:111073 const ViewHostMsg_FrameNavigate_Params& params) {
1074 // For main frame transition, we judge by params.transition.
1075 // Otherwise, by params.redirects.
[email protected]8ff00d72012-10-23 19:12:211076 if (PageTransitionIsMainFrame(params.transition)) {
1077 return PageTransitionIsRedirect(params.transition);
[email protected]09b8f82f2009-06-16 20:22:111078 }
1079 return params.redirects.size() > 1;
1080}
1081
[email protected]d202a7c2012-01-04 07:53:471082void NavigationControllerImpl::RendererDidNavigateToNewPage(
[email protected]4ac5fbe2012-09-01 02:19:591083 const ViewHostMsg_FrameNavigate_Params& params, bool replace_entry) {
[email protected]10f417c52011-12-28 21:04:231084 NavigationEntryImpl* new_entry;
[email protected]f1eb87a2011-05-06 17:49:411085 bool update_virtual_url;
[email protected]e9ba4472008-09-14 15:42:431086 if (pending_entry_) {
1087 // TODO(brettw) this assumes that the pending entry is appropriate for the
1088 // new page that was just loaded. I don't think this is necessarily the
[email protected]49bd30e62011-03-22 20:12:591089 // case! We should have some more tracking to know for sure.
[email protected]10f417c52011-12-28 21:04:231090 new_entry = new NavigationEntryImpl(*pending_entry_);
[email protected]e9ba4472008-09-14 15:42:431091
1092 // Don't use the page type from the pending entry. Some interstitial page
1093 // may have set the type to interstitial. Once we commit, however, the page
1094 // type must always be normal.
[email protected]8ff00d72012-10-23 19:12:211095 new_entry->set_page_type(PAGE_TYPE_NORMAL);
[email protected]f1eb87a2011-05-06 17:49:411096 update_virtual_url = new_entry->update_virtual_url_with_url();
[email protected]e9ba4472008-09-14 15:42:431097 } else {
[email protected]10f417c52011-12-28 21:04:231098 new_entry = new NavigationEntryImpl;
[email protected]f8f93eb2012-09-25 03:06:241099
1100 // Find out whether the new entry needs to update its virtual URL on URL
1101 // change and set up the entry accordingly. This is needed to correctly
1102 // update the virtual URL when replaceState is called after a pushState.
1103 GURL url = params.url;
1104 bool needs_update = false;
1105 BrowserURLHandlerImpl::GetInstance()->RewriteURLIfNecessary(
1106 &url, browser_context_, &needs_update);
1107 new_entry->set_update_virtual_url_with_url(needs_update);
1108
[email protected]f1eb87a2011-05-06 17:49:411109 // When navigating to a new page, give the browser URL handler a chance to
1110 // update the virtual URL based on the new URL. For example, this is needed
1111 // to show chrome://bookmarks/#1 when the bookmarks webui extension changes
1112 // the URL.
[email protected]f8f93eb2012-09-25 03:06:241113 update_virtual_url = needs_update;
[email protected]e9ba4472008-09-14 15:42:431114 }
1115
[email protected]ad23a092011-12-28 07:02:041116 new_entry->SetURL(params.url);
[email protected]f1eb87a2011-05-06 17:49:411117 if (update_virtual_url)
[email protected]38178a42009-12-17 18:58:321118 UpdateVirtualURLToURL(new_entry, params.url);
[email protected]022af742011-12-28 18:37:251119 new_entry->SetReferrer(params.referrer);
[email protected]36fc0392011-12-25 03:59:511120 new_entry->SetPageID(params.page_id);
[email protected]022af742011-12-28 18:37:251121 new_entry->SetTransitionType(params.transition);
[email protected]b6583592012-01-25 19:52:331122 new_entry->set_site_instance(
[email protected]2db9bd72012-04-13 20:20:561123 static_cast<SiteInstanceImpl*>(web_contents_->GetSiteInstance()));
[email protected]36fc0392011-12-25 03:59:511124 new_entry->SetHasPostData(params.is_post);
[email protected]86cd9472012-02-03 19:51:051125 new_entry->SetPostID(params.post_id);
[email protected]7c16976c2012-08-04 02:38:231126 new_entry->SetOriginalRequestURL(params.original_request_url);
[email protected]bf70edce2012-06-20 22:32:221127 new_entry->SetIsOverridingUserAgent(params.is_overriding_user_agent);
[email protected]e9ba4472008-09-14 15:42:431128
[email protected]4ac5fbe2012-09-01 02:19:591129 InsertOrReplaceEntry(new_entry, replace_entry);
[email protected]e9ba4472008-09-14 15:42:431130}
1131
[email protected]d202a7c2012-01-04 07:53:471132void NavigationControllerImpl::RendererDidNavigateToExistingPage(
[email protected]e9ba4472008-09-14 15:42:431133 const ViewHostMsg_FrameNavigate_Params& params) {
1134 // We should only get here for main frame navigations.
[email protected]8ff00d72012-10-23 19:12:211135 DCHECK(PageTransitionIsMainFrame(params.transition));
[email protected]e9ba4472008-09-14 15:42:431136
1137 // This is a back/forward navigation. The existing page for the ID is
[email protected]4c27ba82008-09-24 16:49:091138 // guaranteed to exist by ClassifyNavigation, and we just need to update it
1139 // with new information from the renderer.
[email protected]2db9bd72012-04-13 20:20:561140 int entry_index = GetEntryIndexWithPageID(web_contents_->GetSiteInstance(),
[email protected]7f0005a2009-04-15 03:25:111141 params.page_id);
[email protected]e9ba4472008-09-14 15:42:431142 DCHECK(entry_index >= 0 &&
1143 entry_index < static_cast<int>(entries_.size()));
[email protected]10f417c52011-12-28 21:04:231144 NavigationEntryImpl* entry = entries_[entry_index].get();
[email protected]e9ba4472008-09-14 15:42:431145
[email protected]5ccd4dc2012-10-24 02:28:141146 // The URL may have changed due to redirects.
[email protected]ad23a092011-12-28 07:02:041147 entry->SetURL(params.url);
[email protected]38178a42009-12-17 18:58:321148 if (entry->update_virtual_url_with_url())
1149 UpdateVirtualURLToURL(entry, params.url);
[email protected]5ccd4dc2012-10-24 02:28:141150
1151 // The redirected to page should not inherit the favicon from the previous
1152 // page.
1153 if (PageTransitionIsRedirect(params.transition))
[email protected]91a4ff82012-10-29 20:29:481154 entry->GetFavicon() = FaviconStatus();
[email protected]5ccd4dc2012-10-24 02:28:141155
1156 // The site instance will normally be the same except during session restore,
1157 // when no site instance will be assigned.
[email protected]e9ba4472008-09-14 15:42:431158 DCHECK(entry->site_instance() == NULL ||
[email protected]2db9bd72012-04-13 20:20:561159 entry->site_instance() == web_contents_->GetSiteInstance());
[email protected]b6583592012-01-25 19:52:331160 entry->set_site_instance(
[email protected]2db9bd72012-04-13 20:20:561161 static_cast<SiteInstanceImpl*>(web_contents_->GetSiteInstance()));
[email protected]e9ba4472008-09-14 15:42:431162
[email protected]36fc0392011-12-25 03:59:511163 entry->SetHasPostData(params.is_post);
[email protected]86cd9472012-02-03 19:51:051164 entry->SetPostID(params.post_id);
[email protected]d5a49e52010-01-08 03:01:411165
[email protected]e9ba4472008-09-14 15:42:431166 // The entry we found in the list might be pending if the user hit
1167 // back/forward/reload. This load should commit it (since it's already in the
[email protected]49bd30e62011-03-22 20:12:591168 // list, we can just discard the pending pointer). We should also discard the
1169 // pending entry if it corresponds to a different navigation, since that one
1170 // is now likely canceled. If it is not canceled, we will treat it as a new
1171 // navigation when it arrives, which is also ok.
[email protected]e9ba4472008-09-14 15:42:431172 //
1173 // Note that we need to use the "internal" version since we don't want to
1174 // actually change any other state, just kill the pointer.
[email protected]6eebaab2012-11-15 04:39:491175 DiscardNonCommittedEntriesInternal();
[email protected]40bcc302009-03-02 20:50:391176
[email protected]80858db52009-10-15 00:35:181177 // If a transient entry was removed, the indices might have changed, so we
1178 // have to query the entry index again.
1179 last_committed_entry_index_ =
[email protected]2db9bd72012-04-13 20:20:561180 GetEntryIndexWithPageID(web_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:431181}
1182
[email protected]d202a7c2012-01-04 07:53:471183void NavigationControllerImpl::RendererDidNavigateToSamePage(
[email protected]e9ba4472008-09-14 15:42:431184 const ViewHostMsg_FrameNavigate_Params& params) {
1185 // This mode implies we have a pending entry that's the same as an existing
[email protected]4c27ba82008-09-24 16:49:091186 // entry for this page ID. This entry is guaranteed to exist by
1187 // ClassifyNavigation. All we need to do is update the existing entry.
[email protected]10f417c52011-12-28 21:04:231188 NavigationEntryImpl* existing_entry = GetEntryWithPageID(
[email protected]2db9bd72012-04-13 20:20:561189 web_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:431190
1191 // We assign the entry's unique ID to be that of the new one. Since this is
1192 // always the result of a user action, we want to dismiss infobars, etc. like
1193 // a regular user-initiated navigation.
[email protected]36fc0392011-12-25 03:59:511194 existing_entry->set_unique_id(pending_entry_->GetUniqueID());
[email protected]e9ba4472008-09-14 15:42:431195
[email protected]a0e69262009-06-03 19:08:481196 // The URL may have changed due to redirects.
[email protected]38178a42009-12-17 18:58:321197 if (existing_entry->update_virtual_url_with_url())
1198 UpdateVirtualURLToURL(existing_entry, params.url);
[email protected]ad23a092011-12-28 07:02:041199 existing_entry->SetURL(params.url);
[email protected]a0e69262009-06-03 19:08:481200
[email protected]cbab76d2008-10-13 22:42:471201 DiscardNonCommittedEntries();
[email protected]e9ba4472008-09-14 15:42:431202}
1203
[email protected]d202a7c2012-01-04 07:53:471204void NavigationControllerImpl::RendererDidNavigateInPage(
[email protected]befd8d822009-07-01 04:51:471205 const ViewHostMsg_FrameNavigate_Params& params, bool* did_replace_entry) {
[email protected]8ff00d72012-10-23 19:12:211206 DCHECK(PageTransitionIsMainFrame(params.transition)) <<
[email protected]e9ba4472008-09-14 15:42:431207 "WebKit should only tell us about in-page navs for the main frame.";
1208 // We're guaranteed to have an entry for this one.
[email protected]10f417c52011-12-28 21:04:231209 NavigationEntryImpl* existing_entry = GetEntryWithPageID(
[email protected]2db9bd72012-04-13 20:20:561210 web_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:431211
1212 // Reference fragment navigation. We're guaranteed to have the last_committed
1213 // entry and it will be the same page as the new navigation (minus the
[email protected]d466b8a2011-07-15 21:48:031214 // reference fragments, of course). We'll update the URL of the existing
1215 // entry without pruning the forward history.
[email protected]ad23a092011-12-28 07:02:041216 existing_entry->SetURL(params.url);
[email protected]d466b8a2011-07-15 21:48:031217 if (existing_entry->update_virtual_url_with_url())
1218 UpdateVirtualURLToURL(existing_entry, params.url);
[email protected]ccbe04e2010-03-17 17:58:431219
1220 // This replaces the existing entry since the page ID didn't change.
1221 *did_replace_entry = true;
[email protected]d466b8a2011-07-15 21:48:031222
[email protected]6eebaab2012-11-15 04:39:491223 DiscardNonCommittedEntriesInternal();
[email protected]d466b8a2011-07-15 21:48:031224
1225 // If a transient entry was removed, the indices might have changed, so we
1226 // have to query the entry index again.
1227 last_committed_entry_index_ =
[email protected]2db9bd72012-04-13 20:20:561228 GetEntryIndexWithPageID(web_contents_->GetSiteInstance(), params.page_id);
[email protected]e9ba4472008-09-14 15:42:431229}
1230
[email protected]d202a7c2012-01-04 07:53:471231void NavigationControllerImpl::RendererDidNavigateNewSubframe(
[email protected]e9ba4472008-09-14 15:42:431232 const ViewHostMsg_FrameNavigate_Params& params) {
[email protected]8ff00d72012-10-23 19:12:211233 if (PageTransitionStripQualifier(params.transition) ==
1234 PAGE_TRANSITION_AUTO_SUBFRAME) {
[email protected]09b8f82f2009-06-16 20:22:111235 // This is not user-initiated. Ignore.
[email protected]f233e4232013-02-23 00:55:141236 DiscardNonCommittedEntriesInternal();
[email protected]09b8f82f2009-06-16 20:22:111237 return;
1238 }
[email protected]09b8f82f2009-06-16 20:22:111239
[email protected]e9ba4472008-09-14 15:42:431240 // Manual subframe navigations just get the current entry cloned so the user
1241 // can go back or forward to it. The actual subframe information will be
1242 // stored in the page state for each of those entries. This happens out of
1243 // band with the actual navigations.
[email protected]4c27ba82008-09-24 16:49:091244 DCHECK(GetLastCommittedEntry()) << "ClassifyNavigation should guarantee "
1245 << "that a last committed entry exists.";
[email protected]10f417c52011-12-28 21:04:231246 NavigationEntryImpl* new_entry = new NavigationEntryImpl(
1247 *NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry()));
[email protected]36fc0392011-12-25 03:59:511248 new_entry->SetPageID(params.page_id);
[email protected]672eba292009-05-13 13:22:451249 InsertOrReplaceEntry(new_entry, false);
[email protected]e9ba4472008-09-14 15:42:431250}
1251
[email protected]d202a7c2012-01-04 07:53:471252bool NavigationControllerImpl::RendererDidNavigateAutoSubframe(
[email protected]e9ba4472008-09-14 15:42:431253 const ViewHostMsg_FrameNavigate_Params& params) {
1254 // We're guaranteed to have a previously committed entry, and we now need to
1255 // handle navigation inside of a subframe in it without creating a new entry.
1256 DCHECK(GetLastCommittedEntry());
1257
1258 // Handle the case where we're navigating back/forward to a previous subframe
1259 // navigation entry. This is case "2." in NAV_AUTO_SUBFRAME comment in the
1260 // header file. In case "1." this will be a NOP.
1261 int entry_index = GetEntryIndexWithPageID(
[email protected]2db9bd72012-04-13 20:20:561262 web_contents_->GetSiteInstance(),
[email protected]e9ba4472008-09-14 15:42:431263 params.page_id);
1264 if (entry_index < 0 ||
1265 entry_index >= static_cast<int>(entries_.size())) {
1266 NOTREACHED();
1267 return false;
1268 }
1269
1270 // Update the current navigation entry in case we're going back/forward.
1271 if (entry_index != last_committed_entry_index_) {
[email protected]e9ba4472008-09-14 15:42:431272 last_committed_entry_index_ = entry_index;
[email protected]f233e4232013-02-23 00:55:141273 DiscardNonCommittedEntriesInternal();
[email protected]e9ba4472008-09-14 15:42:431274 return true;
1275 }
[email protected]f233e4232013-02-23 00:55:141276
1277 // We do not need to discard the pending entry in this case, since we will
1278 // not generate commit notifications for this auto-subframe navigation.
[email protected]e9ba4472008-09-14 15:42:431279 return false;
1280}
1281
[email protected]d202a7c2012-01-04 07:53:471282int NavigationControllerImpl::GetIndexOfEntry(
[email protected]10f417c52011-12-28 21:04:231283 const NavigationEntryImpl* entry) const {
[email protected]765b35502008-08-21 00:51:201284 const NavigationEntries::const_iterator i(std::find(
1285 entries_.begin(),
1286 entries_.end(),
1287 entry));
1288 return (i == entries_.end()) ? -1 : static_cast<int>(i - entries_.begin());
1289}
1290
[email protected]ce760d742012-08-30 22:31:101291bool NavigationControllerImpl::IsURLInPageNavigation(
1292 const GURL& url, bool renderer_says_in_page) const {
[email protected]10f417c52011-12-28 21:04:231293 NavigationEntry* last_committed = GetLastCommittedEntry();
[email protected]ce760d742012-08-30 22:31:101294 return last_committed && AreURLsInPageNavigation(
1295 last_committed->GetURL(), url, renderer_says_in_page);
[email protected]e9ba4472008-09-14 15:42:431296}
1297
[email protected]d202a7c2012-01-04 07:53:471298void NavigationControllerImpl::CopyStateFrom(
[email protected]c5eed492012-01-04 17:07:501299 const NavigationController& temp) {
[email protected]d202a7c2012-01-04 07:53:471300 const NavigationControllerImpl& source =
1301 static_cast<const NavigationControllerImpl&>(temp);
[email protected]ce3fa3c2009-04-20 19:55:571302 // Verify that we look new.
[email protected]a26023822011-12-29 00:23:551303 DCHECK(GetEntryCount() == 0 && !GetPendingEntry());
[email protected]ce3fa3c2009-04-20 19:55:571304
[email protected]a26023822011-12-29 00:23:551305 if (source.GetEntryCount() == 0)
[email protected]ce3fa3c2009-04-20 19:55:571306 return; // Nothing new to do.
1307
1308 needs_reload_ = true;
[email protected]a26023822011-12-29 00:23:551309 InsertEntriesFrom(source, source.GetEntryCount());
[email protected]ce3fa3c2009-04-20 19:55:571310
[email protected]d1198fd2012-08-13 22:50:191311 for (SessionStorageNamespaceMap::const_iterator it =
1312 source.session_storage_namespace_map_.begin();
1313 it != source.session_storage_namespace_map_.end();
1314 ++it) {
1315 SessionStorageNamespaceImpl* source_namespace =
1316 static_cast<SessionStorageNamespaceImpl*>(it->second.get());
1317 session_storage_namespace_map_.insert(
1318 make_pair(it->first, source_namespace->Clone()));
1319 }
[email protected]4e6419c2010-01-15 04:50:341320
[email protected]2ca1ea662012-10-04 02:26:361321 FinishRestore(source.last_committed_entry_index_, RESTORE_CURRENT_SESSION);
[email protected]91854cd2012-01-10 19:43:571322
1323 // Copy the max page id map from the old tab to the new tab. This ensures
1324 // that new and existing navigations in the tab's current SiteInstances
1325 // are identified properly.
[email protected]2db9bd72012-04-13 20:20:561326 web_contents_->CopyMaxPageIDsFrom(source.web_contents());
[email protected]ce3fa3c2009-04-20 19:55:571327}
1328
[email protected]d202a7c2012-01-04 07:53:471329void NavigationControllerImpl::CopyStateFromAndPrune(
[email protected]c5eed492012-01-04 17:07:501330 NavigationController* temp) {
[email protected]d202a7c2012-01-04 07:53:471331 NavigationControllerImpl* source =
1332 static_cast<NavigationControllerImpl*>(temp);
[email protected]9e1ad4b2011-08-14 16:49:191333 // The SiteInstance and page_id of the last committed entry needs to be
1334 // remembered at this point, in case there is only one committed entry
[email protected]91854cd2012-01-10 19:43:571335 // and it is pruned. We use a scoped_refptr to ensure the SiteInstance
1336 // can't be freed during this time period.
[email protected]10f417c52011-12-28 21:04:231337 NavigationEntryImpl* last_committed =
1338 NavigationEntryImpl::FromNavigationEntry(GetLastCommittedEntry());
[email protected]91854cd2012-01-10 19:43:571339 scoped_refptr<SiteInstance> site_instance(
1340 last_committed ? last_committed->site_instance() : NULL);
[email protected]36fc0392011-12-25 03:59:511341 int32 minimum_page_id = last_committed ? last_committed->GetPageID() : -1;
[email protected]91854cd2012-01-10 19:43:571342 int32 max_page_id = last_committed ?
[email protected]2db9bd72012-04-13 20:20:561343 web_contents_->GetMaxPageIDForSiteInstance(site_instance.get()) : -1;
[email protected]9e1ad4b2011-08-14 16:49:191344
[email protected]e1cd5452010-08-26 18:03:251345 // This code is intended for use when the last entry is the active entry.
[email protected]a26023822011-12-29 00:23:551346 DCHECK(
1347 (transient_entry_index_ != -1 &&
[email protected]91854cd2012-01-10 19:43:571348 transient_entry_index_ == GetEntryCount() - 1) ||
[email protected]a26023822011-12-29 00:23:551349 (pending_entry_ && (pending_entry_index_ == -1 ||
1350 pending_entry_index_ == GetEntryCount() - 1)) ||
1351 (!pending_entry_ && last_committed_entry_index_ == GetEntryCount() - 1));
[email protected]e1cd5452010-08-26 18:03:251352
1353 // Remove all the entries leaving the active entry.
1354 PruneAllButActive();
1355
[email protected]944822b2012-03-02 20:57:251356 // We now have zero or one entries. Ensure that adding the entries from
1357 // source won't put us over the limit.
1358 DCHECK(GetEntryCount() == 0 || GetEntryCount() == 1);
1359 if (GetEntryCount() > 0)
1360 source->PruneOldestEntryIfFull();
1361
[email protected]47e020a2010-10-15 14:43:371362 // Insert the entries from source. Don't use source->GetCurrentEntryIndex as
[email protected]e1cd5452010-08-26 18:03:251363 // we don't want to copy over the transient entry.
[email protected]47e020a2010-10-15 14:43:371364 int max_source_index = source->pending_entry_index_ != -1 ?
1365 source->pending_entry_index_ : source->last_committed_entry_index_;
[email protected]e1cd5452010-08-26 18:03:251366 if (max_source_index == -1)
[email protected]a26023822011-12-29 00:23:551367 max_source_index = source->GetEntryCount();
[email protected]e1cd5452010-08-26 18:03:251368 else
1369 max_source_index++;
[email protected]47e020a2010-10-15 14:43:371370 InsertEntriesFrom(*source, max_source_index);
[email protected]e1cd5452010-08-26 18:03:251371
1372 // Adjust indices such that the last entry and pending are at the end now.
[email protected]a26023822011-12-29 00:23:551373 last_committed_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251374 if (pending_entry_index_ != -1)
[email protected]a26023822011-12-29 00:23:551375 pending_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251376 if (transient_entry_index_ != -1) {
1377 // There's a transient entry. In this case we want the last committed to
1378 // point to the previous entry.
[email protected]a26023822011-12-29 00:23:551379 transient_entry_index_ = GetEntryCount() - 1;
[email protected]e1cd5452010-08-26 18:03:251380 if (last_committed_entry_index_ != -1)
1381 last_committed_entry_index_--;
1382 }
[email protected]796931a92011-08-10 01:32:141383
[email protected]2db9bd72012-04-13 20:20:561384 web_contents_->SetHistoryLengthAndPrune(site_instance.get(),
[email protected]9e1ad4b2011-08-14 16:49:191385 max_source_index,
1386 minimum_page_id);
[email protected]91854cd2012-01-10 19:43:571387
1388 // Copy the max page id map from the old tab to the new tab. This ensures
1389 // that new and existing navigations in the tab's current SiteInstances
1390 // are identified properly.
[email protected]2db9bd72012-04-13 20:20:561391 web_contents_->CopyMaxPageIDsFrom(source->web_contents());
[email protected]91854cd2012-01-10 19:43:571392
1393 // If there is a last committed entry, be sure to include it in the new
1394 // max page ID map.
1395 if (max_page_id > -1) {
[email protected]2db9bd72012-04-13 20:20:561396 web_contents_->UpdateMaxPageIDForSiteInstance(site_instance.get(),
[email protected]91854cd2012-01-10 19:43:571397 max_page_id);
1398 }
[email protected]e1cd5452010-08-26 18:03:251399}
1400
[email protected]d202a7c2012-01-04 07:53:471401void NavigationControllerImpl::PruneAllButActive() {
[email protected]97b6c4f2010-09-27 19:31:261402 if (transient_entry_index_ != -1) {
1403 // There is a transient entry. Prune up to it.
[email protected]a26023822011-12-29 00:23:551404 DCHECK_EQ(GetEntryCount() - 1, transient_entry_index_);
[email protected]77d8d622010-12-15 10:30:121405 entries_.erase(entries_.begin(), entries_.begin() + transient_entry_index_);
[email protected]97b6c4f2010-09-27 19:31:261406 transient_entry_index_ = 0;
1407 last_committed_entry_index_ = -1;
1408 pending_entry_index_ = -1;
1409 } else if (!pending_entry_) {
1410 // There's no pending entry. Leave the last entry (if there is one).
[email protected]a26023822011-12-29 00:23:551411 if (!GetEntryCount())
[email protected]97b6c4f2010-09-27 19:31:261412 return;
1413
[email protected]77d8d622010-12-15 10:30:121414 DCHECK(last_committed_entry_index_ >= 0);
1415 entries_.erase(entries_.begin(),
1416 entries_.begin() + last_committed_entry_index_);
1417 entries_.erase(entries_.begin() + 1, entries_.end());
[email protected]97b6c4f2010-09-27 19:31:261418 last_committed_entry_index_ = 0;
1419 } else if (pending_entry_index_ != -1) {
[email protected]77d8d622010-12-15 10:30:121420 entries_.erase(entries_.begin(), entries_.begin() + pending_entry_index_);
1421 entries_.erase(entries_.begin() + 1, entries_.end());
[email protected]97b6c4f2010-09-27 19:31:261422 pending_entry_index_ = 0;
1423 last_committed_entry_index_ = 0;
[email protected]97b6c4f2010-09-27 19:31:261424 } else {
1425 // There is a pending_entry, but it's not in entries_.
1426 pending_entry_index_ = -1;
1427 last_committed_entry_index_ = -1;
[email protected]77d8d622010-12-15 10:30:121428 entries_.clear();
[email protected]97b6c4f2010-09-27 19:31:261429 }
1430
[email protected]2db9bd72012-04-13 20:20:561431 if (web_contents_->GetInterstitialPage()) {
[email protected]97b6c4f2010-09-27 19:31:261432 // Normally the interstitial page hides itself if the user doesn't proceeed.
1433 // This would result in showing a NavigationEntry we just removed. Set this
1434 // so the interstitial triggers a reload if the user doesn't proceed.
[email protected]2db9bd72012-04-13 20:20:561435 static_cast<InterstitialPageImpl*>(web_contents_->GetInterstitialPage())->
[email protected]cadaec52012-02-08 21:53:131436 set_reload_on_dont_proceed(true);
[email protected]97b6c4f2010-09-27 19:31:261437 }
[email protected]97b6c4f2010-09-27 19:31:261438}
1439
[email protected]15f46dc2013-01-24 05:40:241440// Implemented here and not in NavigationEntry because this controller caches
1441// the total number of screen shots across all entries.
1442void NavigationControllerImpl::ClearAllScreenshots() {
1443 for (NavigationEntries::iterator it = entries_.begin();
1444 it != entries_.end();
1445 ++it)
1446 ClearScreenshot(it->get());
[email protected]c87b9092013-02-03 05:41:421447 DCHECK_EQ(GetScreenshotCount(), 0);
[email protected]15f46dc2013-01-24 05:40:241448}
1449
[email protected]d1198fd2012-08-13 22:50:191450void NavigationControllerImpl::SetSessionStorageNamespace(
1451 const std::string& partition_id,
[email protected]8ff00d72012-10-23 19:12:211452 SessionStorageNamespace* session_storage_namespace) {
[email protected]d1198fd2012-08-13 22:50:191453 if (!session_storage_namespace)
1454 return;
1455
1456 // We can't overwrite an existing SessionStorage without violating spec.
1457 // Attempts to do so may give a tab access to another tab's session storage
1458 // so die hard on an error.
1459 bool successful_insert = session_storage_namespace_map_.insert(
1460 make_pair(partition_id,
1461 static_cast<SessionStorageNamespaceImpl*>(
1462 session_storage_namespace)))
1463 .second;
1464 CHECK(successful_insert) << "Cannot replace existing SessionStorageNamespace";
1465}
1466
[email protected]d202a7c2012-01-04 07:53:471467void NavigationControllerImpl::SetMaxRestoredPageID(int32 max_id) {
[email protected]71fde352011-12-29 03:29:561468 max_restored_page_id_ = max_id;
1469}
1470
[email protected]d202a7c2012-01-04 07:53:471471int32 NavigationControllerImpl::GetMaxRestoredPageID() const {
[email protected]71fde352011-12-29 03:29:561472 return max_restored_page_id_;
[email protected]a26023822011-12-29 00:23:551473}
1474
1475SessionStorageNamespace*
[email protected]8ff00d72012-10-23 19:12:211476NavigationControllerImpl::GetSessionStorageNamespace(SiteInstance* instance) {
[email protected]d1198fd2012-08-13 22:50:191477 std::string partition_id;
1478 if (instance) {
1479 // TODO(ajwong): When GetDefaultSessionStorageNamespace() goes away, remove
1480 // this if statement so |instance| must not be NULL.
1481 partition_id =
[email protected]e94bbcb2012-09-07 05:33:571482 GetContentClient()->browser()->GetStoragePartitionIdForSite(
[email protected]77ab17312012-09-28 15:34:591483 browser_context_, instance->GetSiteURL());
[email protected]d1198fd2012-08-13 22:50:191484 }
1485
1486 SessionStorageNamespaceMap::const_iterator it =
1487 session_storage_namespace_map_.find(partition_id);
1488 if (it != session_storage_namespace_map_.end())
1489 return it->second.get();
1490
1491 // Create one if no one has accessed session storage for this partition yet.
[email protected]4c3a23582012-08-18 08:54:341492 //
1493 // TODO(ajwong): Should this use the |partition_id| directly rather than
1494 // re-lookup via |instance|? http://crbug.com/142685
[email protected]8ff00d72012-10-23 19:12:211495 StoragePartition* partition =
[email protected]4c3a23582012-08-18 08:54:341496 BrowserContext::GetStoragePartition(browser_context_, instance);
[email protected]d1198fd2012-08-13 22:50:191497 SessionStorageNamespaceImpl* session_storage_namespace =
1498 new SessionStorageNamespaceImpl(
1499 static_cast<DOMStorageContextImpl*>(
[email protected]4c3a23582012-08-18 08:54:341500 partition->GetDOMStorageContext()));
[email protected]d1198fd2012-08-13 22:50:191501 session_storage_namespace_map_[partition_id] = session_storage_namespace;
1502
1503 return session_storage_namespace;
1504}
1505
1506SessionStorageNamespace*
1507NavigationControllerImpl::GetDefaultSessionStorageNamespace() {
1508 // TODO(ajwong): Remove if statement in GetSessionStorageNamespace().
1509 return GetSessionStorageNamespace(NULL);
1510}
1511
1512const SessionStorageNamespaceMap&
1513NavigationControllerImpl::GetSessionStorageNamespaceMap() const {
1514 return session_storage_namespace_map_;
[email protected]a26023822011-12-29 00:23:551515}
[email protected]d202a7c2012-01-04 07:53:471516
1517bool NavigationControllerImpl::NeedsReload() const {
[email protected]71fde352011-12-29 03:29:561518 return needs_reload_;
1519}
[email protected]a26023822011-12-29 00:23:551520
[email protected]d202a7c2012-01-04 07:53:471521void NavigationControllerImpl::RemoveEntryAtIndexInternal(int index) {
[email protected]a26023822011-12-29 00:23:551522 DCHECK(index < GetEntryCount());
[email protected]6a13a6c2011-12-20 21:47:121523 DCHECK(index != last_committed_entry_index_);
[email protected]43032342011-03-21 14:10:311524
1525 DiscardNonCommittedEntries();
1526
1527 entries_.erase(entries_.begin() + index);
[email protected]6a13a6c2011-12-20 21:47:121528 if (last_committed_entry_index_ > index)
[email protected]43032342011-03-21 14:10:311529 last_committed_entry_index_--;
1530}
1531
[email protected]d202a7c2012-01-04 07:53:471532void NavigationControllerImpl::DiscardNonCommittedEntries() {
[email protected]cbab76d2008-10-13 22:42:471533 bool transient = transient_entry_index_ != -1;
1534 DiscardNonCommittedEntriesInternal();
initial.commit09911bf2008-07-26 23:55:291535
[email protected]cbab76d2008-10-13 22:42:471536 // If there was a transient entry, invalidate everything so the new active
1537 // entry state is shown.
1538 if (transient) {
[email protected]2db9bd72012-04-13 20:20:561539 web_contents_->NotifyNavigationStateChanged(kInvalidateAll);
[email protected]cbab76d2008-10-13 22:42:471540 }
initial.commit09911bf2008-07-26 23:55:291541}
1542
[email protected]d202a7c2012-01-04 07:53:471543NavigationEntry* NavigationControllerImpl::GetPendingEntry() const {
[email protected]022af742011-12-28 18:37:251544 return pending_entry_;
1545}
1546
[email protected]d202a7c2012-01-04 07:53:471547int NavigationControllerImpl::GetPendingEntryIndex() const {
[email protected]a26023822011-12-29 00:23:551548 return pending_entry_index_;
1549}
1550
[email protected]d202a7c2012-01-04 07:53:471551void NavigationControllerImpl::InsertOrReplaceEntry(NavigationEntryImpl* entry,
1552 bool replace) {
[email protected]8ff00d72012-10-23 19:12:211553 DCHECK(entry->GetTransitionType() != PAGE_TRANSITION_AUTO_SUBFRAME);
[email protected]765b35502008-08-21 00:51:201554
1555 // Copy the pending entry's unique ID to the committed entry.
1556 // I don't know if pending_entry_index_ can be other than -1 here.
[email protected]10f417c52011-12-28 21:04:231557 const NavigationEntryImpl* const pending_entry =
1558 (pending_entry_index_ == -1) ?
1559 pending_entry_ : entries_[pending_entry_index_].get();
[email protected]765b35502008-08-21 00:51:201560 if (pending_entry)
[email protected]36fc0392011-12-25 03:59:511561 entry->set_unique_id(pending_entry->GetUniqueID());
[email protected]765b35502008-08-21 00:51:201562
[email protected]cbab76d2008-10-13 22:42:471563 DiscardNonCommittedEntriesInternal();
[email protected]765b35502008-08-21 00:51:201564
1565 int current_size = static_cast<int>(entries_.size());
1566
[email protected]765b35502008-08-21 00:51:201567 if (current_size > 0) {
[email protected]672eba292009-05-13 13:22:451568 // Prune any entries which are in front of the current entry.
1569 // Also prune the current entry if we are to replace the current entry.
[email protected]47dcbdc2011-05-27 15:08:311570 // last_committed_entry_index_ must be updated here since calls to
1571 // NotifyPrunedEntries() below may re-enter and we must make sure
1572 // last_committed_entry_index_ is not left in an invalid state.
1573 if (replace)
1574 --last_committed_entry_index_;
1575
[email protected]c12bf1a12008-09-17 16:28:491576 int num_pruned = 0;
[email protected]47dcbdc2011-05-27 15:08:311577 while (last_committed_entry_index_ < (current_size - 1)) {
[email protected]c12bf1a12008-09-17 16:28:491578 num_pruned++;
[email protected]765b35502008-08-21 00:51:201579 entries_.pop_back();
1580 current_size--;
1581 }
[email protected]c12bf1a12008-09-17 16:28:491582 if (num_pruned > 0) // Only notify if we did prune something.
1583 NotifyPrunedEntries(this, false, num_pruned);
[email protected]765b35502008-08-21 00:51:201584 }
1585
[email protected]944822b2012-03-02 20:57:251586 PruneOldestEntryIfFull();
[email protected]765b35502008-08-21 00:51:201587
[email protected]10f417c52011-12-28 21:04:231588 entries_.push_back(linked_ptr<NavigationEntryImpl>(entry));
[email protected]765b35502008-08-21 00:51:201589 last_committed_entry_index_ = static_cast<int>(entries_.size()) - 1;
[email protected]e9ba4472008-09-14 15:42:431590
1591 // This is a new page ID, so we need everybody to know about it.
[email protected]2db9bd72012-04-13 20:20:561592 web_contents_->UpdateMaxPageID(entry->GetPageID());
initial.commit09911bf2008-07-26 23:55:291593}
1594
[email protected]944822b2012-03-02 20:57:251595void NavigationControllerImpl::PruneOldestEntryIfFull() {
1596 if (entries_.size() >= max_entry_count()) {
1597 DCHECK_EQ(max_entry_count(), entries_.size());
1598 DCHECK(last_committed_entry_index_ > 0);
1599 RemoveEntryAtIndex(0);
1600 NotifyPrunedEntries(this, true, 1);
1601 }
1602}
1603
[email protected]d202a7c2012-01-04 07:53:471604void NavigationControllerImpl::NavigateToPendingEntry(ReloadType reload_type) {
[email protected]72097fd02010-01-21 23:36:011605 needs_reload_ = false;
1606
[email protected]83c2e232011-10-07 21:36:461607 // If we were navigating to a slow-to-commit page, and the user performs
1608 // a session history navigation to the last committed page, RenderViewHost
1609 // will force the throbber to start, but WebKit will essentially ignore the
1610 // navigation, and won't send a message to stop the throbber. To prevent this
1611 // from happening, we drop the navigation here and stop the slow-to-commit
1612 // page from loading (which would normally happen during the navigation).
1613 if (pending_entry_index_ != -1 &&
1614 pending_entry_index_ == last_committed_entry_index_ &&
1615 (entries_[pending_entry_index_]->restore_type() ==
[email protected]10f417c52011-12-28 21:04:231616 NavigationEntryImpl::RESTORE_NONE) &&
[email protected]36fc0392011-12-25 03:59:511617 (entries_[pending_entry_index_]->GetTransitionType() &
[email protected]8ff00d72012-10-23 19:12:211618 PAGE_TRANSITION_FORWARD_BACK)) {
[email protected]2db9bd72012-04-13 20:20:561619 web_contents_->Stop();
[email protected]6a13a6c2011-12-20 21:47:121620
1621 // If an interstitial page is showing, we want to close it to get back
1622 // to what was showing before.
[email protected]2db9bd72012-04-13 20:20:561623 if (web_contents_->GetInterstitialPage())
1624 web_contents_->GetInterstitialPage()->DontProceed();
[email protected]6a13a6c2011-12-20 21:47:121625
[email protected]83c2e232011-10-07 21:36:461626 DiscardNonCommittedEntries();
1627 return;
1628 }
1629
[email protected]6a13a6c2011-12-20 21:47:121630 // If an interstitial page is showing, the previous renderer is blocked and
1631 // cannot make new requests. Unblock (and disable) it to allow this
1632 // navigation to succeed. The interstitial will stay visible until the
1633 // resulting DidNavigate.
[email protected]2db9bd72012-04-13 20:20:561634 if (web_contents_->GetInterstitialPage()) {
1635 static_cast<InterstitialPageImpl*>(web_contents_->GetInterstitialPage())->
[email protected]cadaec52012-02-08 21:53:131636 CancelForNavigation();
1637 }
[email protected]6a13a6c2011-12-20 21:47:121638
initial.commit09911bf2008-07-26 23:55:291639 // For session history navigations only the pending_entry_index_ is set.
1640 if (!pending_entry_) {
[email protected]4bf3522c2010-08-19 21:00:201641 DCHECK_NE(pending_entry_index_, -1);
[email protected]765b35502008-08-21 00:51:201642 pending_entry_ = entries_[pending_entry_index_].get();
initial.commit09911bf2008-07-26 23:55:291643 }
1644
[email protected]2db9bd72012-04-13 20:20:561645 if (!web_contents_->NavigateToPendingEntry(reload_type))
[email protected]cbab76d2008-10-13 22:42:471646 DiscardNonCommittedEntries();
[email protected]77362eb2011-08-01 17:18:381647
1648 // If the entry is being restored and doesn't have a SiteInstance yet, fill
1649 // it in now that we know. This allows us to find the entry when it commits.
1650 // This works for browser-initiated navigations. We handle renderer-initiated
[email protected]2db9bd72012-04-13 20:20:561651 // navigations to restored entries in WebContentsImpl::OnGoToEntryAtOffset.
[email protected]77362eb2011-08-01 17:18:381652 if (pending_entry_ && !pending_entry_->site_instance() &&
[email protected]10f417c52011-12-28 21:04:231653 pending_entry_->restore_type() != NavigationEntryImpl::RESTORE_NONE) {
[email protected]b6583592012-01-25 19:52:331654 pending_entry_->set_site_instance(static_cast<SiteInstanceImpl*>(
[email protected]2db9bd72012-04-13 20:20:561655 web_contents_->GetPendingSiteInstance()));
[email protected]10f417c52011-12-28 21:04:231656 pending_entry_->set_restore_type(NavigationEntryImpl::RESTORE_NONE);
[email protected]77362eb2011-08-01 17:18:381657 }
initial.commit09911bf2008-07-26 23:55:291658}
1659
[email protected]d202a7c2012-01-04 07:53:471660void NavigationControllerImpl::NotifyNavigationEntryCommitted(
[email protected]8ff00d72012-10-23 19:12:211661 LoadCommittedDetails* details) {
[email protected]df1af242009-05-01 00:11:401662 details->entry = GetActiveEntry();
[email protected]8ff00d72012-10-23 19:12:211663 NotificationDetails notification_details =
1664 Details<LoadCommittedDetails>(details);
[email protected]df1af242009-05-01 00:11:401665
[email protected]2db9bd72012-04-13 20:20:561666 // We need to notify the ssl_manager_ before the web_contents_ so the
[email protected]df1af242009-05-01 00:11:401667 // location bar will have up-to-date information about the security style
1668 // when it wants to draw. See http://crbug.com/11157
1669 ssl_manager_.DidCommitProvisionalLoad(notification_details);
1670
initial.commit09911bf2008-07-26 23:55:291671 // TODO(pkasting): http://b/1113079 Probably these explicit notification paths
1672 // should be removed, and interested parties should just listen for the
1673 // notification below instead.
[email protected]2db9bd72012-04-13 20:20:561674 web_contents_->NotifyNavigationStateChanged(kInvalidateAll);
initial.commit09911bf2008-07-26 23:55:291675
[email protected]8ff00d72012-10-23 19:12:211676 NotificationService::current()->Notify(
1677 NOTIFICATION_NAV_ENTRY_COMMITTED,
1678 Source<NavigationController>(this),
[email protected]df1af242009-05-01 00:11:401679 notification_details);
initial.commit09911bf2008-07-26 23:55:291680}
1681
initial.commit09911bf2008-07-26 23:55:291682// static
[email protected]d202a7c2012-01-04 07:53:471683size_t NavigationControllerImpl::max_entry_count() {
[email protected]9b51970d2011-12-09 23:10:231684 if (max_entry_count_for_testing_ != kMaxEntryCountForTestingNotSet)
1685 return max_entry_count_for_testing_;
[email protected]8ff00d72012-10-23 19:12:211686 return kMaxSessionHistoryEntries;
[email protected]9b51970d2011-12-09 23:10:231687}
1688
[email protected]d202a7c2012-01-04 07:53:471689void NavigationControllerImpl::SetActive(bool is_active) {
[email protected]ee613922009-09-02 20:38:221690 if (is_active && needs_reload_)
1691 LoadIfNecessary();
initial.commit09911bf2008-07-26 23:55:291692}
1693
[email protected]d202a7c2012-01-04 07:53:471694void NavigationControllerImpl::LoadIfNecessary() {
initial.commit09911bf2008-07-26 23:55:291695 if (!needs_reload_)
1696 return;
1697
initial.commit09911bf2008-07-26 23:55:291698 // Calling Reload() results in ignoring state, and not loading.
1699 // Explicitly use NavigateToPendingEntry so that the renderer uses the
1700 // cached state.
1701 pending_entry_index_ = last_committed_entry_index_;
[email protected]1ccb3568d2010-02-19 10:51:161702 NavigateToPendingEntry(NO_RELOAD);
initial.commit09911bf2008-07-26 23:55:291703}
1704
[email protected]d202a7c2012-01-04 07:53:471705void NavigationControllerImpl::NotifyEntryChanged(const NavigationEntry* entry,
1706 int index) {
[email protected]8ff00d72012-10-23 19:12:211707 EntryChangedDetails det;
[email protected]534e54b2008-08-13 15:40:091708 det.changed_entry = entry;
1709 det.index = index;
[email protected]8ff00d72012-10-23 19:12:211710 NotificationService::current()->Notify(
1711 NOTIFICATION_NAV_ENTRY_CHANGED,
1712 Source<NavigationController>(this),
1713 Details<EntryChangedDetails>(&det));
initial.commit09911bf2008-07-26 23:55:291714}
1715
[email protected]d202a7c2012-01-04 07:53:471716void NavigationControllerImpl::FinishRestore(int selected_index,
[email protected]2ca1ea662012-10-04 02:26:361717 RestoreType type) {
[email protected]a26023822011-12-29 00:23:551718 DCHECK(selected_index >= 0 && selected_index < GetEntryCount());
[email protected]2ca1ea662012-10-04 02:26:361719 ConfigureEntriesForRestore(&entries_, type);
initial.commit09911bf2008-07-26 23:55:291720
[email protected]71fde352011-12-29 03:29:561721 SetMaxRestoredPageID(static_cast<int32>(GetEntryCount()));
initial.commit09911bf2008-07-26 23:55:291722
1723 last_committed_entry_index_ = selected_index;
initial.commit09911bf2008-07-26 23:55:291724}
[email protected]765b35502008-08-21 00:51:201725
[email protected]d202a7c2012-01-04 07:53:471726void NavigationControllerImpl::DiscardNonCommittedEntriesInternal() {
[email protected]765b35502008-08-21 00:51:201727 if (pending_entry_index_ == -1)
1728 delete pending_entry_;
1729 pending_entry_ = NULL;
1730 pending_entry_index_ = -1;
[email protected]cbab76d2008-10-13 22:42:471731
1732 DiscardTransientEntry();
1733}
1734
[email protected]d202a7c2012-01-04 07:53:471735void NavigationControllerImpl::DiscardTransientEntry() {
[email protected]cbab76d2008-10-13 22:42:471736 if (transient_entry_index_ == -1)
1737 return;
[email protected]a0e69262009-06-03 19:08:481738 entries_.erase(entries_.begin() + transient_entry_index_);
[email protected]80858db52009-10-15 00:35:181739 if (last_committed_entry_index_ > transient_entry_index_)
1740 last_committed_entry_index_--;
[email protected]cbab76d2008-10-13 22:42:471741 transient_entry_index_ = -1;
[email protected]765b35502008-08-21 00:51:201742}
1743
[email protected]d202a7c2012-01-04 07:53:471744int NavigationControllerImpl::GetEntryIndexWithPageID(
[email protected]7f0005a2009-04-15 03:25:111745 SiteInstance* instance, int32 page_id) const {
[email protected]765b35502008-08-21 00:51:201746 for (int i = static_cast<int>(entries_.size()) - 1; i >= 0; --i) {
[email protected]7f0005a2009-04-15 03:25:111747 if ((entries_[i]->site_instance() == instance) &&
[email protected]36fc0392011-12-25 03:59:511748 (entries_[i]->GetPageID() == page_id))
[email protected]765b35502008-08-21 00:51:201749 return i;
1750 }
1751 return -1;
1752}
[email protected]cbab76d2008-10-13 22:42:471753
[email protected]d202a7c2012-01-04 07:53:471754NavigationEntry* NavigationControllerImpl::GetTransientEntry() const {
[email protected]cbab76d2008-10-13 22:42:471755 if (transient_entry_index_ == -1)
1756 return NULL;
1757 return entries_[transient_entry_index_].get();
1758}
[email protected]e1cd5452010-08-26 18:03:251759
[email protected]0b684262013-02-20 02:18:211760void NavigationControllerImpl::SetTransientEntry(NavigationEntry* entry) {
1761 // Discard any current transient entry, we can only have one at a time.
1762 int index = 0;
1763 if (last_committed_entry_index_ != -1)
1764 index = last_committed_entry_index_ + 1;
1765 DiscardTransientEntry();
1766 entries_.insert(
1767 entries_.begin() + index, linked_ptr<NavigationEntryImpl>(
1768 NavigationEntryImpl::FromNavigationEntry(entry)));
1769 transient_entry_index_ = index;
1770 web_contents_->NotifyNavigationStateChanged(kInvalidateAll);
1771}
1772
[email protected]d202a7c2012-01-04 07:53:471773void NavigationControllerImpl::InsertEntriesFrom(
1774 const NavigationControllerImpl& source,
[email protected]e1cd5452010-08-26 18:03:251775 int max_index) {
[email protected]a26023822011-12-29 00:23:551776 DCHECK_LE(max_index, source.GetEntryCount());
[email protected]e1cd5452010-08-26 18:03:251777 size_t insert_index = 0;
1778 for (int i = 0; i < max_index; i++) {
1779 // When cloning a tab, copy all entries except interstitial pages
[email protected]ad23a092011-12-28 07:02:041780 if (source.entries_[i].get()->GetPageType() !=
[email protected]8ff00d72012-10-23 19:12:211781 PAGE_TYPE_INTERSTITIAL) {
[email protected]e1cd5452010-08-26 18:03:251782 entries_.insert(entries_.begin() + insert_index++,
[email protected]10f417c52011-12-28 21:04:231783 linked_ptr<NavigationEntryImpl>(
1784 new NavigationEntryImpl(*source.entries_[i])));
[email protected]e1cd5452010-08-26 18:03:251785 }
1786 }
1787}
[email protected]c5b88d82012-10-06 17:03:331788
1789void NavigationControllerImpl::SetGetTimestampCallbackForTest(
1790 const base::Callback<base::Time()>& get_timestamp_callback) {
1791 get_timestamp_callback_ = get_timestamp_callback;
1792}
[email protected]8ff00d72012-10-23 19:12:211793
[email protected]e3d92a7f2013-01-10 02:35:051794void NavigationControllerImpl::SetTakeScreenshotCallbackForTest(
1795 const base::Callback<void(RenderViewHost*)>& take_screenshot_callback) {
1796 take_screenshot_callback_ = take_screenshot_callback;
1797}
1798
[email protected]8ff00d72012-10-23 19:12:211799} // namespace content