ios/web/navigation/crw_session_controller.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
   6 #define IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_
   7
   8 #import <Foundation/Foundation.h>
   9 #include <vector>
  10
  11 #include "ui/base/page_transition_types.h"
  12 #include "url/gurl.h"
  13
  14 @class CRWSessionEntry;
  15 @class CRWSessionCertificatePolicyManager;
  16 @class XCallbackParameters;
  17
  18 namespace web {
  19 class NavigationManagerImpl;
  20 struct Referrer;
  21 struct SSLStatus;
  22 }
  23
  24 // A CRWSessionController is similar to a NavigationController object in desktop
  25 // Chrome. It maintains information needed to save/restore a tab with its
  26 // complete session history. There is one of these for each tab.
  27 // TODO(stuartmorgan): Move under NavigationManager, and consider merging into
  28 // NavigationManager.
  29 @interface CRWSessionController : NSObject<NSCoding, NSCopying>
  30
  31 @property(nonatomic, readonly, retain) NSString* tabId;
  32 @property(nonatomic, readonly, assign) NSInteger currentNavigationIndex;
  33 @property(nonatomic, readonly, assign) NSInteger previousNavigationIndex;
  34 @property(nonatomic, readonly, retain) NSArray* entries;
  35 @property(nonatomic, copy) NSString* windowName;
  36 // Indicates whether the page was opened by DOM (e.g. with |window.open|
  37 // JavaScript call or by clicking a link with |_blank| target).
  38 @property(nonatomic, readonly, getter=isOpenedByDOM) BOOL openedByDOM;
  39 @property(nonatomic, readonly, retain)
  40     CRWSessionCertificatePolicyManager* sessionCertificatePolicyManager;
  41 // Returns the current entry in the session list, or the pending entry if there
  42 // is a navigation in progress.
  43 @property(nonatomic, readonly) CRWSessionEntry* currentEntry;
  44 // Returns the entry that should be displayed to users (e.g., in the omnibox).
  45 @property(nonatomic, readonly) CRWSessionEntry* visibleEntry;
  46 // Returns the pending entry, if any.
  47 @property(nonatomic, readonly) CRWSessionEntry* pendingEntry;
  48 // Returns the transient entry, if any.
  49 @property(nonatomic, readonly) CRWSessionEntry* transientEntry;
  50 // Returns the last committed entry.
  51 @property(nonatomic, readonly) CRWSessionEntry* lastCommittedEntry;
  52 // Returns the previous entry in the session list, or nil if there isn't any.
  53 @property(nonatomic, readonly) CRWSessionEntry* previousEntry;
  54 @property(nonatomic, assign) NSTimeInterval lastVisitedTimestamp;
  55 @property(nonatomic, readonly, copy) NSString* openerId;
  56 @property(nonatomic, readonly, assign) NSInteger openerNavigationIndex;
  57 @property(nonatomic, retain) XCallbackParameters* xCallbackParameters;
  58
  59 // CRWSessionController doesn't have public constructors. New
  60 // CRWSessionControllers are created by deserialization, or via a
  61 // NavigationManager.
  62
  63 // Sets the corresponding NavigationManager.
  64 - (void)setNavigationManager:(web::NavigationManagerImpl*)navigationManager;
  65
  66 // Add a new entry with the given url, referrer, and navigation type, making it
  67 // the current entry. If |url| is the same as the current entry's url, this
  68 // does nothing. |referrer| may be nil if there isn't one. The entry starts
  69 // out as pending, and will be lost unless |-commitPendingEntry| is called.
  70 - (void)addPendingEntry:(const GURL&)url
  71                referrer:(const web::Referrer&)referrer
  72              transition:(ui::PageTransition)type
  73       rendererInitiated:(BOOL)rendererInitiated;
  74
  75 // Updates the URL of the yet to be committed pending entry. Useful for page
  76 // redirects. Does nothing if there is no pending entry.
  77 - (void)updatePendingEntry:(const GURL&)url;
  78
  79 // Commits the current pending entry. No changes are made to the entry during
  80 // this process, it is just moved from pending to committed.
  81 // TODO(pinkerton): Desktop Chrome broadcasts a notification here, should we?
  82 - (void)commitPendingEntry;
  83
  84 // Adds a transient entry with the given information. A transient entry will be
  85 // discarded on any navigation.
  86 // TODO(stuartmorgan): Make this work more like upstream, where the entry can
  87 // be made from outside and then handed in, instead of having to pass a bunch
  88 // of construction params here.
  89 - (void)addTransientEntry:(const GURL&)url
  90                     title:(const base::string16&)title
  91                 sslStatus:(const web::SSLStatus*)status;
  92
  93 // Creates a new CRWSessionEntry with the given URL and state object. A state
  94 // object is a serialized generic JavaScript object that contains details of the
  95 // UI's state for a given CRWSessionEntry/URL. The current entry's URL is the
  96 // new entry's referrer.
  97 - (void)pushNewEntryWithURL:(const GURL&)url stateObject:(NSString*)stateObject;
  98 // Updates the URL and state object for the current entry.
  99 - (void)updateCurrentEntryWithURL:(const GURL&)url
 100                       stateObject:(NSString*)stateObject;
 101
 102 - (void)discardNonCommittedEntries;
 103
 104 // Returns YES if there is a pending entry.
 105 - (BOOL)hasPendingEntry;
 106
 107 // Copies history state from the given CRWSessionController and adds it to this
 108 // controller. If |replaceState|, replaces the state of this controller with
 109 // the state of |otherSession|, instead of appending.
 110 - (void)copyStateFromAndPrune:(CRWSessionController*)otherSession
 111                  replaceState:(BOOL)replaceState;
 112
 113 // Returns YES if there are entries to go back or forward to, given the
 114 // current entry.
 115 - (BOOL)canGoBack;
 116 - (BOOL)canGoForward;
 117 // Adjusts the current entry to reflect the navigation in the corresponding
 118 // direction in history.
 119 - (void)goBack;
 120 - (void)goForward;
 121 // Calls goBack or goForward the appropriate number of times to adjust
 122 // currentNavigationIndex_ by delta.
 123 - (void)goDelta:(int)delta;
 124 // Sets |currentNavigationIndex_| to the index of |entry| if |entries_| contains
 125 // |entry|.
 126 - (void)goToEntry:(CRWSessionEntry*)entry;
 127
 128 // Removes the entry at |index| after discarding any noncomitted entries.
 129 // |index| must not be the index of the last committed entry, or a noncomitted
 130 // entry.
 131 - (void)removeEntryAtIndex:(NSInteger)index;
 132
 133 // Returns an array containing all of the non-redirected CRWSessionEntry objects
 134 // whose index in |entries_| is less than |currentNavigationIndex_|.
 135 - (NSArray*)backwardEntries;
 136
 137 // Returns an array containing all of the non-redirected CRWSessionEntry objects
 138 // whose index in |entries_| is greater than |currentNavigationIndex_|.
 139 - (NSArray*)forwardEntries;
 140
 141 // Returns the URLs in the entries that are redirected to the current entry.
 142 - (std::vector<GURL>)currentRedirectedUrls;
 143
 144 // Determines if navigation between the two given entries is a push state
 145 // navigation. Entries can be passed in in any order.
 146 - (BOOL)isPushStateNavigationBetweenEntry:(CRWSessionEntry*)firstEntry
 147                                  andEntry:(CRWSessionEntry*)secondEntry;
 148
 149 // Find the most recent session entry that is not a redirect. Returns nil if
 150 // |entries_| is empty.
 151 - (CRWSessionEntry*)lastUserEntry;
 152
 153 // Set |useDesktopUserAgentForNextPendingEntry_| to YES if there is no pending
 154 // entry, otherwise set |useDesktopUserAgent| in the pending entry.
 155 - (void)useDesktopUserAgentForNextPendingEntry;
 156
 157 @end
 158
 159 #endif  // IOS_WEB_NAVIGATION_CRW_SESSION_CONTROLLER_H_