--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/mac/History/WebHistory.mm Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,860 @@
+/*
+ * Copyright (C) 2005, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "WebHistoryInternal.h"
+
+#import "WebHistoryItemInternal.h"
+#import "WebKitLogging.h"
+#import "WebNSURLExtras.h"
+#import "WebTypesInternal.h"
+#import <WebCore/HistoryItem.h>
+#import <WebCore/HistoryPropertyList.h>
+#import <WebCore/PageGroup.h>
+
+using namespace WebCore;
+using namespace std;
+
+typedef int64_t WebHistoryDateKey;
+typedef HashMap<WebHistoryDateKey, RetainPtr<NSMutableArray> > DateToEntriesMap;
+
+NSString *WebHistoryItemsAddedNotification = @"WebHistoryItemsAddedNotification";
+NSString *WebHistoryItemsRemovedNotification = @"WebHistoryItemsRemovedNotification";
+NSString *WebHistoryAllItemsRemovedNotification = @"WebHistoryAllItemsRemovedNotification";
+NSString *WebHistoryLoadedNotification = @"WebHistoryLoadedNotification";
+NSString *WebHistoryItemsDiscardedWhileLoadingNotification = @"WebHistoryItemsDiscardedWhileLoadingNotification";
+NSString *WebHistorySavedNotification = @"WebHistorySavedNotification";
+NSString *WebHistoryItemsKey = @"WebHistoryItems";
+
+static WebHistory *_sharedHistory = nil;
+
+NSString *FileVersionKey = @"WebHistoryFileVersion";
+NSString *DatesArrayKey = @"WebHistoryDates";
+
+#define currentFileVersion 1
+
+class WebHistoryWriter : public HistoryPropertyListWriter {
+public:
+ WebHistoryWriter(DateToEntriesMap*);
+
+private:
+ virtual void writeHistoryItems(BinaryPropertyListObjectStream&);
+
+ DateToEntriesMap* m_entriesByDate;
+ Vector<int> m_dateKeys;
+};
+
+@interface WebHistoryPrivate : NSObject {
+@private
+ NSMutableDictionary *_entriesByURL;
+ DateToEntriesMap* _entriesByDate;
+ NSMutableArray *_orderedLastVisitedDays;
+ BOOL itemLimitSet;
+ int itemLimit;
+ BOOL ageInDaysLimitSet;
+ int ageInDaysLimit;
+}
+
+- (WebHistoryItem *)visitedURL:(NSURL *)url withTitle:(NSString *)title increaseVisitCount:(BOOL)increaseVisitCount;
+
+- (BOOL)addItem:(WebHistoryItem *)entry discardDuplicate:(BOOL)discardDuplicate;
+- (void)addItems:(NSArray *)newEntries;
+- (BOOL)removeItem:(WebHistoryItem *)entry;
+- (BOOL)removeItems:(NSArray *)entries;
+- (BOOL)removeAllItems;
+
+- (NSArray *)orderedLastVisitedDays;
+- (NSArray *)orderedItemsLastVisitedOnDay:(NSCalendarDate *)calendarDate;
+- (BOOL)containsURL:(NSURL *)URL;
+- (WebHistoryItem *)itemForURL:(NSURL *)URL;
+- (WebHistoryItem *)itemForURLString:(NSString *)URLString;
+- (NSArray *)allItems;
+
+- (BOOL)loadFromURL:(NSURL *)URL collectDiscardedItemsInto:(NSMutableArray *)discardedItems error:(NSError **)error;
+- (BOOL)saveToURL:(NSURL *)URL error:(NSError **)error;
+
+- (NSCalendarDate *)ageLimitDate;
+
+- (void)setHistoryItemLimit:(int)limit;
+- (int)historyItemLimit;
+- (void)setHistoryAgeInDaysLimit:(int)limit;
+- (int)historyAgeInDaysLimit;
+
+- (void)addVisitedLinksToPageGroup:(PageGroup&)group;
+
+@end
+
+@implementation WebHistoryPrivate
+
+#pragma mark OBJECT FRAMEWORK
+
++ (void)initialize
+{
+ [[NSUserDefaults standardUserDefaults] registerDefaults:
+ [NSDictionary dictionaryWithObjectsAndKeys:
+ @"1000", @"WebKitHistoryItemLimit",
+ @"7", @"WebKitHistoryAgeInDaysLimit",
+ nil]];
+}
+
+- (id)init
+{
+ if (![super init])
+ return nil;
+
+ _entriesByURL = [[NSMutableDictionary alloc] init];
+ _entriesByDate = new DateToEntriesMap;
+
+ return self;
+}
+
+- (void)dealloc
+{
+ [_entriesByURL release];
+ [_orderedLastVisitedDays release];
+ delete _entriesByDate;
+ [super dealloc];
+}
+
+- (void)finalize
+{
+ delete _entriesByDate;
+ [super finalize];
+}
+
+#pragma mark MODIFYING CONTENTS
+
+static void getDayBoundaries(NSTimeInterval interval, NSTimeInterval& beginningOfDay, NSTimeInterval& beginningOfNextDay)
+{
+ CFTimeZoneRef timeZone = CFTimeZoneCopyDefault();
+ CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(interval, timeZone);
+ date.hour = 0;
+ date.minute = 0;
+ date.second = 0;
+ beginningOfDay = CFGregorianDateGetAbsoluteTime(date, timeZone);
+ date.day += 1;
+ beginningOfNextDay = CFGregorianDateGetAbsoluteTime(date, timeZone);
+ CFRelease(timeZone);
+}
+
+static inline NSTimeInterval beginningOfDay(NSTimeInterval date)
+{
+ static NSTimeInterval cachedBeginningOfDay = NAN;
+ static NSTimeInterval cachedBeginningOfNextDay;
+ if (!(date >= cachedBeginningOfDay && date < cachedBeginningOfNextDay))
+ getDayBoundaries(date, cachedBeginningOfDay, cachedBeginningOfNextDay);
+ return cachedBeginningOfDay;
+}
+
+static inline WebHistoryDateKey dateKey(NSTimeInterval date)
+{
+ // Converting from double (NSTimeInterval) to int64_t (WebHistoryDateKey) is
+ // safe here because all sensible dates are in the range -2**48 .. 2**47 which
+ // safely fits in an int64_t.
+ return beginningOfDay(date);
+}
+
+// Returns whether the day is already in the list of days,
+// and fills in *key with the key used to access its location
+- (BOOL)findKey:(WebHistoryDateKey*)key forDay:(NSTimeInterval)date
+{
+ ASSERT_ARG(key, key);
+ *key = dateKey(date);
+ return _entriesByDate->contains(*key);
+}
+
+- (void)insertItem:(WebHistoryItem *)entry forDateKey:(WebHistoryDateKey)dateKey
+{
+ ASSERT_ARG(entry, entry != nil);
+ ASSERT(_entriesByDate->contains(dateKey));
+
+ NSMutableArray *entriesForDate = _entriesByDate->get(dateKey).get();
+ NSTimeInterval entryDate = [entry lastVisitedTimeInterval];
+
+ unsigned count = [entriesForDate count];
+
+ // The entries for each day are stored in a sorted array with the most recent entry first
+ // Check for the common cases of the entry being newer than all existing entries or the first entry of the day
+ if (!count || [[entriesForDate objectAtIndex:0] lastVisitedTimeInterval] < entryDate) {
+ [entriesForDate insertObject:entry atIndex:0];
+ return;
+ }
+ // .. or older than all existing entries
+ if (count > 0 && [[entriesForDate objectAtIndex:count - 1] lastVisitedTimeInterval] >= entryDate) {
+ [entriesForDate insertObject:entry atIndex:count];
+ return;
+ }
+
+ unsigned low = 0;
+ unsigned high = count;
+ while (low < high) {
+ unsigned mid = low + (high - low) / 2;
+ if ([[entriesForDate objectAtIndex:mid] lastVisitedTimeInterval] >= entryDate)
+ low = mid + 1;
+ else
+ high = mid;
+ }
+
+ // low is now the index of the first entry that is older than entryDate
+ [entriesForDate insertObject:entry atIndex:low];
+}
+
+- (BOOL)removeItemFromDateCaches:(WebHistoryItem *)entry
+{
+ WebHistoryDateKey dateKey;
+ BOOL foundDate = [self findKey:&dateKey forDay:[entry lastVisitedTimeInterval]];
+
+ if (!foundDate)
+ return NO;
+
+ DateToEntriesMap::iterator it = _entriesByDate->find(dateKey);
+ NSMutableArray *entriesForDate = it->second.get();
+ [entriesForDate removeObjectIdenticalTo:entry];
+
+ // remove this date entirely if there are no other entries on it
+ if ([entriesForDate count] == 0) {
+ _entriesByDate->remove(it);
+ // Clear _orderedLastVisitedDays so it will be regenerated when next requested.
+ [_orderedLastVisitedDays release];
+ _orderedLastVisitedDays = nil;
+ }
+
+ return YES;
+}
+
+- (BOOL)removeItemForURLString:(NSString *)URLString
+{
+ WebHistoryItem *entry = [_entriesByURL objectForKey:URLString];
+ if (!entry)
+ return NO;
+
+ [_entriesByURL removeObjectForKey:URLString];
+
+#if ASSERT_DISABLED
+ [self removeItemFromDateCaches:entry];
+#else
+ BOOL itemWasInDateCaches = [self removeItemFromDateCaches:entry];
+ ASSERT(itemWasInDateCaches);
+#endif
+
+ if (![_entriesByURL count])
+ PageGroup::removeAllVisitedLinks();
+
+ return YES;
+}
+
+- (void)addItemToDateCaches:(WebHistoryItem *)entry
+{
+ WebHistoryDateKey dateKey;
+ if ([self findKey:&dateKey forDay:[entry lastVisitedTimeInterval]])
+ // other entries already exist for this date
+ [self insertItem:entry forDateKey:dateKey];
+ else {
+ // no other entries exist for this date
+ NSMutableArray *entries = [[NSMutableArray alloc] initWithObjects:&entry count:1];
+ _entriesByDate->set(dateKey, entries);
+ [entries release];
+ // Clear _orderedLastVisitedDays so it will be regenerated when next requested.
+ [_orderedLastVisitedDays release];
+ _orderedLastVisitedDays = nil;
+ }
+}
+
+- (WebHistoryItem *)visitedURL:(NSURL *)url withTitle:(NSString *)title increaseVisitCount:(BOOL)increaseVisitCount
+{
+ ASSERT(url);
+ ASSERT(title);
+
+ NSString *URLString = [url _web_originalDataAsString];
+ WebHistoryItem *entry = [_entriesByURL objectForKey:URLString];
+
+ if (entry) {
+ LOG(History, "Updating global history entry %@", entry);
+ // Remove the item from date caches before changing its last visited date. Otherwise we might get duplicate entries
+ // as seen in <rdar://problem/6570573>.
+ BOOL itemWasInDateCaches = [self removeItemFromDateCaches:entry];
+ ASSERT_UNUSED(itemWasInDateCaches, itemWasInDateCaches);
+
+ [entry _visitedWithTitle:title increaseVisitCount:increaseVisitCount];
+ } else {
+ LOG(History, "Adding new global history entry for %@", url);
+ entry = [[WebHistoryItem alloc] initWithURLString:URLString title:title lastVisitedTimeInterval:[NSDate timeIntervalSinceReferenceDate]];
+ [entry _recordInitialVisit];
+ [_entriesByURL setObject:entry forKey:URLString];
+ [entry release];
+ }
+
+ [self addItemToDateCaches:entry];
+
+ return entry;
+}
+
+- (BOOL)addItem:(WebHistoryItem *)entry discardDuplicate:(BOOL)discardDuplicate
+{
+ ASSERT_ARG(entry, entry);
+ ASSERT_ARG(entry, [entry lastVisitedTimeInterval] != 0);
+
+ NSString *URLString = [entry URLString];
+
+ WebHistoryItem *oldEntry = [_entriesByURL objectForKey:URLString];
+ if (oldEntry) {
+ if (discardDuplicate)
+ return NO;
+
+ // The last reference to oldEntry might be this dictionary, so we hold onto a reference
+ // until we're done with oldEntry.
+ [oldEntry retain];
+ [self removeItemForURLString:URLString];
+
+ // If we already have an item with this URL, we need to merge info that drives the
+ // URL autocomplete heuristics from that item into the new one.
+ [entry _mergeAutoCompleteHints:oldEntry];
+ [oldEntry release];
+ }
+
+ [self addItemToDateCaches:entry];
+ [_entriesByURL setObject:entry forKey:URLString];
+
+ return YES;
+}
+
+- (BOOL)removeItem:(WebHistoryItem *)entry
+{
+ NSString *URLString = [entry URLString];
+
+ // If this exact object isn't stored, then make no change.
+ // FIXME: Is this the right behavior if this entry isn't present, but another entry for the same URL is?
+ // Maybe need to change the API to make something like removeEntryForURLString public instead.
+ WebHistoryItem *matchingEntry = [_entriesByURL objectForKey:URLString];
+ if (matchingEntry != entry)
+ return NO;
+
+ [self removeItemForURLString:URLString];
+
+ return YES;
+}
+
+- (BOOL)removeItems:(NSArray *)entries
+{
+ NSUInteger count = [entries count];
+ if (!count)
+ return NO;
+
+ for (NSUInteger index = 0; index < count; ++index)
+ [self removeItem:[entries objectAtIndex:index]];
+
+ return YES;
+}
+
+- (BOOL)removeAllItems
+{
+ if (_entriesByDate->isEmpty())
+ return NO;
+
+ _entriesByDate->clear();
+ [_entriesByURL removeAllObjects];
+
+ // Clear _orderedLastVisitedDays so it will be regenerated when next requested.
+ [_orderedLastVisitedDays release];
+ _orderedLastVisitedDays = nil;
+
+ PageGroup::removeAllVisitedLinks();
+
+ return YES;
+}
+
+- (void)addItems:(NSArray *)newEntries
+{
+ // There is no guarantee that the incoming entries are in any particular
+ // order, but if this is called with a set of entries that were created by
+ // iterating through the results of orderedLastVisitedDays and orderedItemsLastVisitedOnDayy
+ // then they will be ordered chronologically from newest to oldest. We can make adding them
+ // faster (fewer compares) by inserting them from oldest to newest.
+ NSEnumerator *enumerator = [newEntries reverseObjectEnumerator];
+ while (WebHistoryItem *entry = [enumerator nextObject])
+ [self addItem:entry discardDuplicate:NO];
+}
+
+#pragma mark DATE-BASED RETRIEVAL
+
+- (NSArray *)orderedLastVisitedDays
+{
+ if (!_orderedLastVisitedDays) {
+ Vector<int> daysAsTimeIntervals;
+ daysAsTimeIntervals.reserveCapacity(_entriesByDate->size());
+ DateToEntriesMap::const_iterator end = _entriesByDate->end();
+ for (DateToEntriesMap::const_iterator it = _entriesByDate->begin(); it != end; ++it)
+ daysAsTimeIntervals.append(it->first);
+
+ sort(daysAsTimeIntervals.begin(), daysAsTimeIntervals.end());
+ size_t count = daysAsTimeIntervals.size();
+ _orderedLastVisitedDays = [[NSMutableArray alloc] initWithCapacity:count];
+ for (int i = count - 1; i >= 0; i--) {
+ NSTimeInterval interval = daysAsTimeIntervals[i];
+ NSCalendarDate *date = [[NSCalendarDate alloc] initWithTimeIntervalSinceReferenceDate:interval];
+ [_orderedLastVisitedDays addObject:date];
+ [date release];
+ }
+ }
+ return _orderedLastVisitedDays;
+}
+
+- (NSArray *)orderedItemsLastVisitedOnDay:(NSCalendarDate *)date
+{
+ WebHistoryDateKey dateKey;
+ if (![self findKey:&dateKey forDay:[date timeIntervalSinceReferenceDate]])
+ return nil;
+ return _entriesByDate->get(dateKey).get();
+}
+
+#pragma mark URL MATCHING
+
+- (WebHistoryItem *)itemForURLString:(NSString *)URLString
+{
+ return [_entriesByURL objectForKey:URLString];
+}
+
+- (BOOL)containsURL:(NSURL *)URL
+{
+ return [self itemForURLString:[URL _web_originalDataAsString]] != nil;
+}
+
+- (WebHistoryItem *)itemForURL:(NSURL *)URL
+{
+ return [self itemForURLString:[URL _web_originalDataAsString]];
+}
+
+- (NSArray *)allItems
+{
+ return [_entriesByURL allValues];
+}
+
+#pragma mark ARCHIVING/UNARCHIVING
+
+- (void)setHistoryAgeInDaysLimit:(int)limit
+{
+ ageInDaysLimitSet = YES;
+ ageInDaysLimit = limit;
+}
+
+- (int)historyAgeInDaysLimit
+{
+ if (ageInDaysLimitSet)
+ return ageInDaysLimit;
+ return [[NSUserDefaults standardUserDefaults] integerForKey:@"WebKitHistoryAgeInDaysLimit"];
+}
+
+- (void)setHistoryItemLimit:(int)limit
+{
+ itemLimitSet = YES;
+ itemLimit = limit;
+}
+
+- (int)historyItemLimit
+{
+ if (itemLimitSet)
+ return itemLimit;
+ return [[NSUserDefaults standardUserDefaults] integerForKey:@"WebKitHistoryItemLimit"];
+}
+
+// Return a date that marks the age limit for history entries saved to or
+// loaded from disk. Any entry older than this item should be rejected.
+- (NSCalendarDate *)ageLimitDate
+{
+ return [[NSCalendarDate calendarDate] dateByAddingYears:0 months:0 days:-[self historyAgeInDaysLimit]
+ hours:0 minutes:0 seconds:0];
+}
+
+- (BOOL)loadHistoryGutsFromURL:(NSURL *)URL savedItemsCount:(int *)numberOfItemsLoaded collectDiscardedItemsInto:(NSMutableArray *)discardedItems error:(NSError **)error
+{
+ *numberOfItemsLoaded = 0;
+ NSDictionary *dictionary = nil;
+
+ // Optimize loading from local file, which is faster than using the general URL loading mechanism
+ if ([URL isFileURL]) {
+ dictionary = [NSDictionary dictionaryWithContentsOfFile:[URL path]];
+ if (!dictionary) {
+#if !LOG_DISABLED
+ if ([[NSFileManager defaultManager] fileExistsAtPath:[URL path]])
+ LOG_ERROR("unable to read history from file %@; perhaps contents are corrupted", [URL path]);
+#endif
+ // else file doesn't exist, which is normal the first time
+ return NO;
+ }
+ } else {
+ NSData *data = [NSURLConnection sendSynchronousRequest:[NSURLRequest requestWithURL:URL] returningResponse:nil error:error];
+ if (data && [data length] > 0) {
+ dictionary = [NSPropertyListSerialization propertyListFromData:data
+ mutabilityOption:NSPropertyListImmutable
+ format:nil
+ errorDescription:nil];
+ }
+ }
+
+ // We used to support NSArrays here, but that was before Safari 1.0 shipped. We will no longer support
+ // that ancient format, so anything that isn't an NSDictionary is bogus.
+ if (![dictionary isKindOfClass:[NSDictionary class]])
+ return NO;
+
+ NSNumber *fileVersionObject = [dictionary objectForKey:FileVersionKey];
+ int fileVersion;
+ // we don't trust data obtained from elsewhere, so double-check
+ if (!fileVersionObject || ![fileVersionObject isKindOfClass:[NSNumber class]]) {
+ LOG_ERROR("history file version can't be determined, therefore not loading");
+ return NO;
+ }
+ fileVersion = [fileVersionObject intValue];
+ if (fileVersion > currentFileVersion) {
+ LOG_ERROR("history file version is %d, newer than newest known version %d, therefore not loading", fileVersion, currentFileVersion);
+ return NO;
+ }
+
+ NSArray *array = [dictionary objectForKey:DatesArrayKey];
+
+ int itemCountLimit = [self historyItemLimit];
+ NSTimeInterval ageLimitDate = [[self ageLimitDate] timeIntervalSinceReferenceDate];
+ NSEnumerator *enumerator = [array objectEnumerator];
+ BOOL ageLimitPassed = NO;
+ BOOL itemLimitPassed = NO;
+ ASSERT(*numberOfItemsLoaded == 0);
+
+ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+ NSDictionary *itemAsDictionary;
+ while ((itemAsDictionary = [enumerator nextObject]) != nil) {
+ WebHistoryItem *item = [[WebHistoryItem alloc] initFromDictionaryRepresentation:itemAsDictionary];
+
+ // item without URL is useless; data on disk must have been bad; ignore
+ if ([item URLString]) {
+ // Test against date limit. Since the items are ordered newest to oldest, we can stop comparing
+ // once we've found the first item that's too old.
+ if (!ageLimitPassed && [item lastVisitedTimeInterval] <= ageLimitDate)
+ ageLimitPassed = YES;
+
+ if (ageLimitPassed || itemLimitPassed)
+ [discardedItems addObject:item];
+ else {
+ if ([self addItem:item discardDuplicate:YES])
+ ++(*numberOfItemsLoaded);
+ if (*numberOfItemsLoaded == itemCountLimit)
+ itemLimitPassed = YES;
+
+ // Draining the autorelease pool every 50 iterations was found by experimentation to be optimal
+ if (*numberOfItemsLoaded % 50 == 0) {
+ [pool drain];
+ pool = [[NSAutoreleasePool alloc] init];
+ }
+ }
+ }
+ [item release];
+ }
+ [pool drain];
+
+ return YES;
+}
+
+- (BOOL)loadFromURL:(NSURL *)URL collectDiscardedItemsInto:(NSMutableArray *)discardedItems error:(NSError **)error
+{
+#if !LOG_DISABLED
+ double start = CFAbsoluteTimeGetCurrent();
+#endif
+
+ int numberOfItems;
+ if (![self loadHistoryGutsFromURL:URL savedItemsCount:&numberOfItems collectDiscardedItemsInto:discardedItems error:error])
+ return NO;
+
+#if !LOG_DISABLED
+ double duration = CFAbsoluteTimeGetCurrent() - start;
+ LOG(Timing, "loading %d history entries from %@ took %f seconds", numberOfItems, URL, duration);
+#endif
+
+ return YES;
+}
+
+- (NSData *)data
+{
+ if (_entriesByDate->isEmpty()) {
+ static NSData *emptyHistoryData = (NSData *)CFDataCreate(0, 0, 0);
+ return emptyHistoryData;
+ }
+
+ // Ignores the date and item count limits; these are respected when loading instead of when saving, so
+ // that clients can learn of discarded items by listening to WebHistoryItemsDiscardedWhileLoadingNotification.
+ WebHistoryWriter writer(_entriesByDate);
+ writer.writePropertyList();
+ return [[(NSData *)writer.releaseData().get() retain] autorelease];
+}
+
+- (BOOL)saveToURL:(NSURL *)URL error:(NSError **)error
+{
+#if !LOG_DISABLED
+ double start = CFAbsoluteTimeGetCurrent();
+#endif
+
+ BOOL result = [[self data] writeToURL:URL options:0 error:error];
+
+#if !LOG_DISABLED
+ double duration = CFAbsoluteTimeGetCurrent() - start;
+ LOG(Timing, "saving history to %@ took %f seconds", URL, duration);
+#endif
+
+ return result;
+}
+
+- (void)addVisitedLinksToPageGroup:(PageGroup&)group
+{
+ NSEnumerator *enumerator = [_entriesByURL keyEnumerator];
+ while (NSString *url = [enumerator nextObject]) {
+ size_t length = [url length];
+ const UChar* characters = CFStringGetCharactersPtr(reinterpret_cast<CFStringRef>(url));
+ if (characters)
+ group.addVisitedLink(characters, length);
+ else {
+ Vector<UChar, 512> buffer(length);
+ [url getCharacters:buffer.data()];
+ group.addVisitedLink(buffer.data(), length);
+ }
+ }
+}
+
+@end
+
+@implementation WebHistory
+
++ (WebHistory *)optionalSharedHistory
+{
+ return _sharedHistory;
+}
+
++ (void)setOptionalSharedHistory:(WebHistory *)history
+{
+ if (_sharedHistory == history)
+ return;
+ // FIXME: Need to think about multiple instances of WebHistory per application
+ // and correct synchronization of history file between applications.
+ [_sharedHistory release];
+ _sharedHistory = [history retain];
+ PageGroup::setShouldTrackVisitedLinks(history);
+ PageGroup::removeAllVisitedLinks();
+}
+
+- (id)init
+{
+ self = [super init];
+ if (!self)
+ return nil;
+ _historyPrivate = [[WebHistoryPrivate alloc] init];
+ return self;
+}
+
+- (void)dealloc
+{
+ [_historyPrivate release];
+ [super dealloc];
+}
+
+#pragma mark MODIFYING CONTENTS
+
+- (void)_sendNotification:(NSString *)name entries:(NSArray *)entries
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:entries, WebHistoryItemsKey, nil];
+ [[NSNotificationCenter defaultCenter]
+ postNotificationName:name object:self userInfo:userInfo];
+}
+
+- (void)removeItems:(NSArray *)entries
+{
+ if ([_historyPrivate removeItems:entries]) {
+ [self _sendNotification:WebHistoryItemsRemovedNotification
+ entries:entries];
+ }
+}
+
+- (void)removeAllItems
+{
+ NSArray *entries = [_historyPrivate allItems];
+ if ([_historyPrivate removeAllItems])
+ [self _sendNotification:WebHistoryAllItemsRemovedNotification entries:entries];
+}
+
+- (void)addItems:(NSArray *)newEntries
+{
+ [_historyPrivate addItems:newEntries];
+ [self _sendNotification:WebHistoryItemsAddedNotification
+ entries:newEntries];
+}
+
+#pragma mark DATE-BASED RETRIEVAL
+
+- (NSArray *)orderedLastVisitedDays
+{
+ return [_historyPrivate orderedLastVisitedDays];
+}
+
+- (NSArray *)orderedItemsLastVisitedOnDay:(NSCalendarDate *)date
+{
+ return [_historyPrivate orderedItemsLastVisitedOnDay:date];
+}
+
+#pragma mark URL MATCHING
+
+- (BOOL)containsURL:(NSURL *)URL
+{
+ return [_historyPrivate containsURL:URL];
+}
+
+- (WebHistoryItem *)itemForURL:(NSURL *)URL
+{
+ return [_historyPrivate itemForURL:URL];
+}
+
+#pragma mark SAVING TO DISK
+
+- (BOOL)loadFromURL:(NSURL *)URL error:(NSError **)error
+{
+ NSMutableArray *discardedItems = [[NSMutableArray alloc] init];
+ if (![_historyPrivate loadFromURL:URL collectDiscardedItemsInto:discardedItems error:error]) {
+ [discardedItems release];
+ return NO;
+ }
+
+ [[NSNotificationCenter defaultCenter]
+ postNotificationName:WebHistoryLoadedNotification
+ object:self];
+
+ if ([discardedItems count])
+ [self _sendNotification:WebHistoryItemsDiscardedWhileLoadingNotification entries:discardedItems];
+
+ [discardedItems release];
+ return YES;
+}
+
+- (BOOL)saveToURL:(NSURL *)URL error:(NSError **)error
+{
+ if (![_historyPrivate saveToURL:URL error:error])
+ return NO;
+ [[NSNotificationCenter defaultCenter]
+ postNotificationName:WebHistorySavedNotification
+ object:self];
+ return YES;
+}
+
+- (void)setHistoryItemLimit:(int)limit
+{
+ [_historyPrivate setHistoryItemLimit:limit];
+}
+
+- (int)historyItemLimit
+{
+ return [_historyPrivate historyItemLimit];
+}
+
+- (void)setHistoryAgeInDaysLimit:(int)limit
+{
+ [_historyPrivate setHistoryAgeInDaysLimit:limit];
+}
+
+- (int)historyAgeInDaysLimit
+{
+ return [_historyPrivate historyAgeInDaysLimit];
+}
+
+@end
+
+@implementation WebHistory (WebPrivate)
+
+- (WebHistoryItem *)_itemForURLString:(NSString *)URLString
+{
+ return [_historyPrivate itemForURLString:URLString];
+}
+
+- (NSArray *)allItems
+{
+ return [_historyPrivate allItems];
+}
+
+- (NSData *)_data
+{
+ return [_historyPrivate data];
+}
+
++ (void)_setVisitedLinkTrackingEnabled:(BOOL)visitedLinkTrackingEnabled
+{
+ PageGroup::setShouldTrackVisitedLinks(visitedLinkTrackingEnabled);
+}
+
++ (void)_removeAllVisitedLinks
+{
+ PageGroup::removeAllVisitedLinks();
+}
+
+@end
+
+@implementation WebHistory (WebInternal)
+
+- (void)_visitedURL:(NSURL *)url withTitle:(NSString *)title method:(NSString *)method wasFailure:(BOOL)wasFailure increaseVisitCount:(BOOL)increaseVisitCount
+{
+ WebHistoryItem *entry = [_historyPrivate visitedURL:url withTitle:title increaseVisitCount:increaseVisitCount];
+
+ HistoryItem* item = core(entry);
+ item->setLastVisitWasFailure(wasFailure);
+
+ if ([method length])
+ item->setLastVisitWasHTTPNonGet([method caseInsensitiveCompare:@"GET"] && (![[url scheme] caseInsensitiveCompare:@"http"] || ![[url scheme] caseInsensitiveCompare:@"https"]));
+
+ item->setRedirectURLs(0);
+
+ NSArray *entries = [[NSArray alloc] initWithObjects:entry, nil];
+ [self _sendNotification:WebHistoryItemsAddedNotification entries:entries];
+ [entries release];
+}
+
+- (void)_addVisitedLinksToPageGroup:(WebCore::PageGroup&)group
+{
+ [_historyPrivate addVisitedLinksToPageGroup:group];
+}
+
+@end
+
+WebHistoryWriter::WebHistoryWriter(DateToEntriesMap* entriesByDate)
+ : m_entriesByDate(entriesByDate)
+{
+ m_dateKeys.reserveCapacity(m_entriesByDate->size());
+ DateToEntriesMap::const_iterator end = m_entriesByDate->end();
+ for (DateToEntriesMap::const_iterator it = m_entriesByDate->begin(); it != end; ++it)
+ m_dateKeys.append(it->first);
+ sort(m_dateKeys.begin(), m_dateKeys.end());
+}
+
+void WebHistoryWriter::writeHistoryItems(BinaryPropertyListObjectStream& stream)
+{
+ for (int dateIndex = m_dateKeys.size() - 1; dateIndex >= 0; dateIndex--) {
+ NSArray *entries = m_entriesByDate->get(m_dateKeys[dateIndex]).get();
+ NSUInteger entryCount = [entries count];
+ for (NSUInteger entryIndex = 0; entryIndex < entryCount; ++entryIndex)
+ writeHistoryItem(stream, core([entries objectAtIndex:entryIndex]));
+ }
+}