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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef COMPONENTS_WEB_VIEW_NAVIGATION_CONTROLLER_H_ | |
| 6 #define COMPONENTS_WEB_VIEW_NAVIGATION_CONTROLLER_H_ | |
| 7 | |
| 8 #include "base/memory/scoped_vector.h" | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "components/web_view/public/interfaces/web_view.mojom.h" | |
| 12 #include "url/gurl.h" | |
| 13 | |
| 14 namespace web_view { | |
| 15 | |
| 16 class Frame; | |
| 17 class NavigationEntry; | |
| 18 class NavigationControllerDelegate; | |
| 19 enum class ReloadType; | |
| 20 | |
| 21 // A NavigationController maintains the back-forward list for a WebView and | |
| 22 // manages all navigation within that list. | |
| 23 // | |
| 24 // Each NavigationController belongs to one WebContents; each WebContents has | |
| 25 // exactly one NavigationController. | |
| 26 class NavigationController { | |
| 27 public: | |
| 28 explicit NavigationController(NavigationControllerDelegate* delegate); | |
| 29 ~NavigationController(); | |
| 30 | |
| 31 int GetCurrentEntryIndex() const; | |
| 32 int GetIndexForOffset(int offset) const; | |
| 33 int GetEntryCount() const; | |
| 34 NavigationEntry* GetEntryAtIndex(int index) const; | |
| 35 NavigationEntry* GetEntryAtOffset(int offset) const; | |
| 36 bool CanGoBack() const; | |
| 37 bool CanGoForward() const; | |
| 38 bool CanGoToOffset(int offset) const; | |
| 39 | |
| 40 void GoBack(); | |
| 41 void GoForward(); | |
| 42 | |
| 43 void LoadURL(mojo::URLRequestPtr request); | |
| 44 | |
| 45 void NavigateToPendingEntry(ReloadType reload_type, | |
| 46 bool update_navigation_start_time); | |
| 47 | |
| 48 // Takes ownership of a pending entry, and adds it to the current list. | |
| 49 // | |
| 50 // TODO(erg): This should eventually own the navigation transition like | |
| 51 // content::NavigationControllerImpl::NavigateToPendingEntry() does. | |
| 52 void SetPendingEntry(scoped_ptr<NavigationEntry> entry); | |
| 53 | |
| 54 // Discards only the pending entry. |was_failure| should be set if the pending | |
| 55 // entry is being discarded because it failed to load. | |
| 56 void DiscardPendingEntry(bool was_failure); | |
| 57 | |
| 58 // Called when a frame is committed. | |
| 59 void FrameDidCommitProvisionalLoad(Frame* frame); | |
| 60 | |
| 61 // Called when a frame navigated by itself. Adds the new url to the | |
| 62 // back/forward stack. | |
| 63 void FrameDidNavigateLocally(Frame* frame, const GURL& url); | |
| 64 | |
| 65 private: | |
| 66 using NavigationEntries = ScopedVector<NavigationEntry>; | |
| 67 | |
| 68 void ClearForwardEntries(); | |
| 69 | |
| 70 NavigationEntries entries_; | |
| 71 | |
| 72 // An entry we haven't gotten a response for yet. This will be discarded | |
| 73 // when we navigate again. It's used only so we know what the currently | |
| 74 // displayed tab is. | |
| 75 // | |
| 76 // This may refer to an item in the entries_ list if the pending_entry_index_ | |
| 77 // == -1, or it may be its own entry that should be deleted. Be careful with | |
| 78 // the memory management. | |
| 79 NavigationEntry* pending_entry_; | |
| 80 | |
| 81 // The index of the currently visible entry. | |
| 82 int last_committed_entry_index_; | |
| 83 | |
| 84 // The index of the pending entry if it is in entries_, or -1 if | |
| 85 // pending_entry_ is a new entry (created by LoadURL). | |
| 86 int pending_entry_index_; | |
| 87 | |
| 88 NavigationControllerDelegate* delegate_; | |
| 89 | |
| 90 DISALLOW_COPY_AND_ASSIGN(NavigationController); | |
| 91 }; | |
| 92 | |
| 93 } // namespace web_view | |
| 94 | |
| 95 #endif // COMPONENTS_WEB_VIEW_NAVIGATION_CONTROLLER_H_ | |
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Issue 1677293002:
Bye bye Mandoline (Closed)
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