| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_ |
| #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/compiler_specific.h" |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "build/build_config.h" |
| #include "content/browser/frame_host/navigation_controller_delegate.h" |
| #include "content/browser/frame_host/navigation_entry_impl.h" |
| #include "content/browser/ssl/ssl_manager.h" |
| #include "content/public/browser/navigation_controller.h" |
| #include "content/public/browser/navigation_type.h" |
| #include "content/public/browser/reload_type.h" |
| |
| struct FrameHostMsg_DidCommitProvisionalLoad_Params; |
| |
| namespace content { |
| class FrameTreeNode; |
| class RenderFrameHostImpl; |
| class NavigationEntryScreenshotManager; |
| class SiteInstance; |
| struct LoadCommittedDetails; |
| |
| class CONTENT_EXPORT NavigationControllerImpl |
| : public NON_EXPORTED_BASE(NavigationController) { |
| public: |
| NavigationControllerImpl( |
| NavigationControllerDelegate* delegate, |
| BrowserContext* browser_context); |
| ~NavigationControllerImpl() override; |
| |
| // NavigationController implementation: |
| WebContents* GetWebContents() const override; |
| BrowserContext* GetBrowserContext() const override; |
| void Restore(int selected_navigation, |
| RestoreType type, |
| std::vector<std::unique_ptr<NavigationEntry>>* entries) override; |
| NavigationEntryImpl* GetActiveEntry() const override; |
| NavigationEntryImpl* GetVisibleEntry() const override; |
| int GetCurrentEntryIndex() const override; |
| NavigationEntryImpl* GetLastCommittedEntry() const override; |
| int GetLastCommittedEntryIndex() const override; |
| bool CanViewSource() const override; |
| int GetEntryCount() const override; |
| NavigationEntryImpl* GetEntryAtIndex(int index) const override; |
| NavigationEntryImpl* GetEntryAtOffset(int offset) const override; |
| void DiscardNonCommittedEntries() override; |
| NavigationEntryImpl* GetPendingEntry() const override; |
| int GetPendingEntryIndex() const override; |
| NavigationEntryImpl* GetTransientEntry() const override; |
| void SetTransientEntry(std::unique_ptr<NavigationEntry> entry) override; |
| void LoadURL(const GURL& url, |
| const Referrer& referrer, |
| ui::PageTransition type, |
| const std::string& extra_headers) override; |
| void LoadURLWithParams(const LoadURLParams& params) override; |
| void LoadIfNecessary() override; |
| bool CanGoBack() const override; |
| bool CanGoForward() const override; |
| bool CanGoToOffset(int offset) const override; |
| void GoBack() override; |
| void GoForward() override; |
| void GoToIndex(int index) override; |
| void GoToOffset(int offset) override; |
| bool RemoveEntryAtIndex(int index) override; |
| const SessionStorageNamespaceMap& GetSessionStorageNamespaceMap() |
| const override; |
| SessionStorageNamespace* GetDefaultSessionStorageNamespace() override; |
| bool NeedsReload() const override; |
| void SetNeedsReload() override; |
| void CancelPendingReload() override; |
| void ContinuePendingReload() override; |
| bool IsInitialNavigation() const override; |
| bool IsInitialBlankNavigation() const override; |
| void Reload(ReloadType reload_type, bool check_for_repost) override; |
| void NotifyEntryChanged(const NavigationEntry* entry) override; |
| void CopyStateFrom(const NavigationController& source) override; |
| void CopyStateFromAndPrune(NavigationController* source, |
| bool replace_entry) override; |
| bool CanPruneAllButLastCommitted() override; |
| void PruneAllButLastCommitted() override; |
| void ClearAllScreenshots() override; |
| |
| // Whether this is the initial navigation in an unmodified new tab. In this |
| // case, we know there is no content displayed in the page. |
| bool IsUnmodifiedBlankTab() const; |
| |
| // The session storage namespace that all child RenderViews belonging to |
| // |instance| should use. |
| SessionStorageNamespace* GetSessionStorageNamespace( |
| SiteInstance* instance); |
| |
| // Returns the index of the specified entry, or -1 if entry is not contained |
| // in this NavigationController. |
| int GetIndexOfEntry(const NavigationEntryImpl* entry) const; |
| |
| // Return the index of the entry with the given unique id, or -1 if not found. |
| int GetEntryIndexWithUniqueID(int nav_entry_id) const; |
| |
| // Return the entry with the given unique id, or null if not found. |
| NavigationEntryImpl* GetEntryWithUniqueID(int nav_entry_id) const; |
| |
| NavigationControllerDelegate* delegate() const { |
| return delegate_; |
| } |
| |
| // For use by WebContentsImpl ------------------------------------------------ |
| |
| // Allow renderer-initiated navigations to create a pending entry when the |
| // provisional load starts. |
| void SetPendingEntry(std::unique_ptr<NavigationEntryImpl> entry); |
| |
| // Handles updating the navigation state after the renderer has navigated. |
| // This is used by the WebContentsImpl. |
| // |
| // If a new entry is created, it will return true and will have filled the |
| // given details structure and broadcast the NOTIFY_NAV_ENTRY_COMMITTED |
| // notification. The caller can then use the details without worrying about |
| // listening for the notification. |
| // |
| // In the case that nothing has changed, the details structure is undefined |
| // and it will return false. |
| bool RendererDidNavigate( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params, |
| LoadCommittedDetails* details, |
| bool is_navigation_within_page, |
| NavigationHandleImpl* navigation_handle); |
| |
| // Notifies us that we just became active. This is used by the WebContentsImpl |
| // so that we know to load URLs that were pending as "lazy" loads. |
| void SetActive(bool is_active); |
| |
| // Returns true if the given URL would be an in-page navigation (e.g., if the |
| // reference fragment is different, or after a pushState) from the last |
| // committed URL in the specified frame. If there is no last committed entry, |
| // then nothing will be in-page. |
| // |
| // Special note: if the URLs are the same, it does NOT automatically count as |
| // an in-page navigation. Neither does an input URL that has no ref, even if |
| // the rest is the same. This may seem weird, but when we're considering |
| // whether a navigation happened without loading anything, the same URL could |
| // be a reload, while only a different ref would be in-page (pages can't clear |
| // refs without reload, only change to "#" which we don't count as empty). |
| // |
| // The situation is made murkier by history.replaceState(), which could |
| // provide the same URL as part of an in-page navigation, not a reload. So |
| // we need to let the (untrustworthy) renderer resolve the ambiguity, but |
| // only when the URLs are on the same origin. We rely on |origin|, which |
| // matters in cases like about:blank that otherwise look cross-origin. |
| bool IsURLInPageNavigation(const GURL& url, |
| const url::Origin& origin, |
| bool renderer_says_in_page, |
| RenderFrameHost* rfh) const; |
| |
| // Sets the SessionStorageNamespace for the given |partition_id|. This is |
| // used during initialization of a new NavigationController to allow |
| // pre-population of the SessionStorageNamespace objects. Session restore, |
| // prerendering, and the implementaion of window.open() are the primary users |
| // of this API. |
| // |
| // Calling this function when a SessionStorageNamespace has already been |
| // associated with a |partition_id| will CHECK() fail. |
| void SetSessionStorageNamespace( |
| const std::string& partition_id, |
| SessionStorageNamespace* session_storage_namespace); |
| |
| // Random data --------------------------------------------------------------- |
| |
| SSLManager* ssl_manager() { return &ssl_manager_; } |
| |
| // Maximum number of entries before we start removing entries from the front. |
| static void set_max_entry_count_for_testing(size_t max_entry_count) { |
| max_entry_count_for_testing_ = max_entry_count; |
| } |
| static size_t max_entry_count(); |
| |
| void SetGetTimestampCallbackForTest( |
| const base::Callback<base::Time()>& get_timestamp_callback); |
| |
| // Takes a screenshot of the page at the current state. |
| void TakeScreenshot(); |
| |
| // Sets the screenshot manager for this NavigationControllerImpl. Setting a |
| // NULL manager recreates the default screenshot manager and uses that. |
| void SetScreenshotManager( |
| std::unique_ptr<NavigationEntryScreenshotManager> manager); |
| |
| // Discards only the pending entry. |was_failure| should be set if the pending |
| // entry is being discarded because it failed to load. |
| void DiscardPendingEntry(bool was_failure); |
| |
| // Sets a flag on the pending NavigationEntryImpl instance if any that the |
| // navigation failed due to an SSL error. |
| void SetPendingNavigationSSLError(bool error); |
| |
| private: |
| friend class RestoreHelper; |
| |
| FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, |
| PurgeScreenshot); |
| FRIEND_TEST_ALL_PREFIXES(TimeSmoother, Basic); |
| FRIEND_TEST_ALL_PREFIXES(TimeSmoother, SingleDuplicate); |
| FRIEND_TEST_ALL_PREFIXES(TimeSmoother, ManyDuplicates); |
| FRIEND_TEST_ALL_PREFIXES(TimeSmoother, ClockBackwardsJump); |
| |
| // Used for identifying which frames need to navigate. |
| using FrameLoadVector = |
| std::vector<std::pair<FrameTreeNode*, FrameNavigationEntry*>>; |
| |
| // Helper class to smooth out runs of duplicate timestamps while still |
| // allowing time to jump backwards. |
| class CONTENT_EXPORT TimeSmoother { |
| public: |
| // Returns |t| with possibly some time added on. |
| base::Time GetSmoothedTime(base::Time t); |
| |
| private: |
| // |low_water_mark_| is the first time in a sequence of adjusted |
| // times and |high_water_mark_| is the last. |
| base::Time low_water_mark_; |
| base::Time high_water_mark_; |
| }; |
| |
| // Causes the controller to load the specified entry. The function assumes |
| // ownership of the pointer since it is put in the navigation list. |
| // NOTE: Do not pass an entry that the controller already owns! |
| void LoadEntry(std::unique_ptr<NavigationEntryImpl> entry); |
| |
| // Identifies which frames need to be navigated for the pending |
| // NavigationEntry and instructs their Navigator to navigate them. Returns |
| // whether any frame successfully started a navigation. |
| bool NavigateToPendingEntryInternal(ReloadType reload_type); |
| |
| // Recursively identifies which frames need to be navigated for the pending |
| // NavigationEntry, starting at |frame| and exploring its children. Only used |
| // in --site-per-process. |
| void FindFramesToNavigate(FrameTreeNode* frame, |
| FrameLoadVector* sameDocumentLoads, |
| FrameLoadVector* differentDocumentLoads); |
| |
| // Returns whether there is a pending NavigationEntry whose unique ID matches |
| // the given NavigationHandle's pending_nav_entry_id. |
| bool PendingEntryMatchesHandle(NavigationHandleImpl* handle) const; |
| |
| // Classifies the given renderer navigation (see the NavigationType enum). |
| NavigationType ClassifyNavigation( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params) const; |
| |
| // Handlers for the different types of navigation types. They will actually |
| // handle the navigations corresponding to the different NavClasses above. |
| // They will NOT broadcast the commit notification, that should be handled by |
| // the caller. |
| // |
| // RendererDidNavigateAutoSubframe is special, it may not actually change |
| // anything if some random subframe is loaded. It will return true if anything |
| // changed, or false if not. |
| // |
| // The NewPage and NewSubframe functions take in |replace_entry| to pass to |
| // InsertOrReplaceEntry, in case the newly created NavigationEntry is meant to |
| // replace the current one (e.g., for location.replace or successful loads |
| // after net errors), in contrast to updating a NavigationEntry in place |
| // (e.g., for history.replaceState). |
| void RendererDidNavigateToNewPage( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params, |
| bool is_in_page, |
| bool replace_entry, |
| NavigationHandleImpl* handle); |
| void RendererDidNavigateToExistingPage( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params, |
| bool is_in_page, |
| bool was_restored, |
| NavigationHandleImpl* handle); |
| void RendererDidNavigateToSamePage( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params, |
| NavigationHandleImpl* handle); |
| void RendererDidNavigateNewSubframe( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params, |
| bool is_in_page, |
| bool replace_entry); |
| bool RendererDidNavigateAutoSubframe( |
| RenderFrameHostImpl* rfh, |
| const FrameHostMsg_DidCommitProvisionalLoad_Params& params); |
| |
| // Actually issues the navigation held in pending_entry. |
| void NavigateToPendingEntry(ReloadType reload_type); |
| |
| // Allows the derived class to issue notifications that a load has been |
| // committed. This will fill in the active entry to the details structure. |
| void NotifyNavigationEntryCommitted(LoadCommittedDetails* details); |
| |
| // Updates the virtual URL of an entry to match a new URL, for cases where |
| // the real renderer URL is derived from the virtual URL, like view-source: |
| void UpdateVirtualURLToURL(NavigationEntryImpl* entry, |
| const GURL& new_url); |
| |
| // Invoked after session/tab restore or cloning a tab. Resets the transition |
| // type of the entries, updates the max page id and creates the active |
| // contents. |
| void FinishRestore(int selected_index, RestoreType type); |
| |
| // Inserts a new entry or replaces the current entry with a new one, removing |
| // all entries after it. The new entry will become the active one. |
| void InsertOrReplaceEntry(std::unique_ptr<NavigationEntryImpl> entry, |
| bool replace); |
| |
| // Removes the entry at |index|, as long as it is not the current entry. |
| void RemoveEntryAtIndexInternal(int index); |
| |
| // Discards both the pending and transient entries. |
| void DiscardNonCommittedEntriesInternal(); |
| |
| // Discards only the transient entry. |
| void DiscardTransientEntry(); |
| |
| // If we have the maximum number of entries, remove the oldest one in |
| // preparation to add another. |
| void PruneOldestEntryIfFull(); |
| |
| // Removes all entries except the last committed entry. If there is a new |
| // pending navigation it is preserved. In contrast to |
| // PruneAllButLastCommitted() this does not update the session history of the |
| // RenderView. Callers must ensure that |CanPruneAllButLastCommitted| returns |
| // true before calling this. |
| void PruneAllButLastCommittedInternal(); |
| |
| // Inserts up to |max_index| entries from |source| into this. This does NOT |
| // adjust any of the members that reference entries_ |
| // (last_committed_entry_index_, pending_entry_index_ or |
| // transient_entry_index_). |
| void InsertEntriesFrom(const NavigationControllerImpl& source, int max_index); |
| |
| // Returns the navigation index that differs from the current entry by the |
| // specified |offset|. The index returned is not guaranteed to be valid. |
| int GetIndexForOffset(int offset) const; |
| |
| // --------------------------------------------------------------------------- |
| |
| // The user browser context associated with this controller. |
| BrowserContext* browser_context_; |
| |
| // List of |NavigationEntry|s for this controller. |
| std::vector<std::unique_ptr<NavigationEntryImpl>> entries_; |
| |
| // An entry we haven't gotten a response for yet. This will be discarded |
| // when we navigate again. It's used only so we know what the currently |
| // displayed tab is. |
| // |
| // This may refer to an item in the entries_ list if the pending_entry_index_ |
| // == -1, or it may be its own entry that should be deleted. Be careful with |
| // the memory management. |
| NavigationEntryImpl* pending_entry_; |
| |
| // Navigations could occur in succession. This field holds the last pending |
| // entry for which we haven't received a response yet. |
| NavigationEntryImpl* last_pending_entry_; |
| |
| // If a new entry fails loading, details about it are temporarily held here |
| // until the error page is shown (or 0 otherwise). |
| // |
| // TODO(avi): We need a better way to handle the connection between failed |
| // loads and the subsequent load of the error page. This current approach has |
| // issues: 1. This might hang around longer than we'd like if there is no |
| // error page loaded, and 2. This doesn't work very well for frames. |
| // http://crbug.com/474261 |
| int failed_pending_entry_id_; |
| |
| // The index of the currently visible entry. |
| int last_committed_entry_index_; |
| |
| // The index of the pending entry if it is in entries_, or -1 if |
| // pending_entry_ is a new entry (created by LoadURL). |
| int pending_entry_index_; |
| |
| // The index for the entry that is shown until a navigation occurs. This is |
| // used for interstitial pages. -1 if there are no such entry. |
| // Note that this entry really appears in the list of entries, but only |
| // temporarily (until the next navigation). Any index pointing to an entry |
| // after the transient entry will become invalid if you navigate forward. |
| int transient_entry_index_; |
| |
| // The index of the last pending entry if it is in entries, or -1 if it was |
| // created by LoadURL. |
| int last_pending_entry_index_; |
| |
| // The index of the last transient entry. Defaults to -1. |
| int last_transient_entry_index_; |
| |
| // The delegate associated with the controller. Possibly NULL during |
| // setup. |
| NavigationControllerDelegate* delegate_; |
| |
| // Manages the SSL security UI. |
| SSLManager ssl_manager_; |
| |
| // Whether we need to be reloaded when made active. |
| bool needs_reload_; |
| |
| // Whether this is the initial navigation. |
| // Becomes false when initial navigation commits. |
| bool is_initial_navigation_; |
| |
| // Prevent unsafe re-entrant calls to NavigateToPendingEntry. |
| bool in_navigate_to_pending_entry_; |
| |
| // Used to find the appropriate SessionStorageNamespace for the storage |
| // partition of a NavigationEntry. |
| // |
| // A NavigationController may contain NavigationEntries that correspond to |
| // different StoragePartitions. Even though they are part of the same |
| // NavigationController, only entries in the same StoragePartition may |
| // share session storage state with one another. |
| SessionStorageNamespaceMap session_storage_namespace_map_; |
| |
| // The maximum number of entries that a navigation controller can store. |
| static size_t max_entry_count_for_testing_; |
| |
| // If a repost is pending, its type (RELOAD or RELOAD_BYPASSING_CACHE), |
| // NO_RELOAD otherwise. |
| ReloadType pending_reload_; |
| |
| // Used to get timestamps for newly-created navigation entries. |
| base::Callback<base::Time()> get_timestamp_callback_; |
| |
| // Used to smooth out timestamps from |get_timestamp_callback_|. |
| // Without this, whenever there is a run of redirects or |
| // code-generated navigations, those navigations may occur within |
| // the timer resolution, leading to things sometimes showing up in |
| // the wrong order in the history view. |
| TimeSmoother time_smoother_; |
| |
| std::unique_ptr<NavigationEntryScreenshotManager> screenshot_manager_; |
| |
| // Used for tracking consecutive reload requests. If the last user-initiated |
| // navigation (either browser-initiated or renderer-initiated with a user |
| // gesture) was a reload, these hold the ReloadType and timestamp. Otherwise |
| // these are ReloadType::NONE and a null timestamp, respectively. |
| ReloadType last_committed_reload_type_; |
| base::Time last_committed_reload_time_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NavigationControllerImpl); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_ |