// Token: 0x0600291B RID: 10523 RVA: 0x000BDF9C File Offset: 0x000BC19C
internal UnifiedJournalEntryStackEnumerable(LimitedJournalEntryStackEnumerable backStack, LimitedJournalEntryStackEnumerable forwardStack)
{
this._backStack = backStack;
this._backStack.CollectionChanged += this.StacksChanged;
this._forwardStack = forwardStack;
this._forwardStack.CollectionChanged += this.StacksChanged;
}
internal UnifiedJournalEntryStackEnumerable(LimitedJournalEntryStackEnumerable backStack, LimitedJournalEntryStackEnumerable forwardStack)
{
_backStack = backStack;
_backStack.CollectionChanged += new NotifyCollectionChangedEventHandler(StacksChanged);
_forwardStack = forwardStack;
_forwardStack.CollectionChanged += new NotifyCollectionChangedEventHandler(StacksChanged);
}
internal IEnumerable GetLimitedJournalEntryStackEnumerable()
{
if (_ljese == null)
{
_ljese = new LimitedJournalEntryStackEnumerable(this);
}
return(_ljese);
}
internal IEnumerable GetLimitedJournalEntryStackEnumerable()
{
if (_ljese == null)
{
_ljese = new LimitedJournalEntryStackEnumerable(this);
}
return _ljese;
}
/// <summary>Merges two navigation history stacks.</summary>
/// <param name="values">An array of two navigation stacks. </param>
/// <param name="targetType">This parameter is not used.</param>
/// <param name="parameter">This parameter is not used.</param>
/// <param name="culture">This parameter is not used.</param>
/// <returns>An <see cref="T:System.Collections.IEnumerable" /> that can be used to enumerate the merged list of navigation history stacks if neither passed navigation stack is <see langword="null" />. <see langword="null" />, otherwise.</returns>
// Token: 0x06002917 RID: 10519 RVA: 0x000BDF0C File Offset: 0x000BC10C
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
if (values != null && values.Length == 2)
{
JournalEntryStack journalEntryStack = values[0] as JournalEntryStack;
JournalEntryStack journalEntryStack2 = values[1] as JournalEntryStack;
if (journalEntryStack != null && journalEntryStack2 != null)
{
LimitedJournalEntryStackEnumerable backStack = (LimitedJournalEntryStackEnumerable)journalEntryStack.GetLimitedJournalEntryStackEnumerable();
LimitedJournalEntryStackEnumerable forwardStack = (LimitedJournalEntryStackEnumerable)journalEntryStack2.GetLimitedJournalEntryStackEnumerable();
return(new UnifiedJournalEntryStackEnumerable(backStack, forwardStack));
}
}
return(null);
}
/// <summary>
/// This method from IValueConverter returns an IEnumerable which in turn will yield the
/// single list containing all of the menu items.
/// </summary>
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (values != null && values.Length == 2)
{
JournalEntryStack backStack = values[0] as JournalEntryStack;
JournalEntryStack forwardStack = values[1] as JournalEntryStack;
if (backStack != null && forwardStack != null)
{
LimitedJournalEntryStackEnumerable limitedBackStack = (LimitedJournalEntryStackEnumerable)backStack.GetLimitedJournalEntryStackEnumerable();
LimitedJournalEntryStackEnumerable limitedForwardStack = (LimitedJournalEntryStackEnumerable)forwardStack.GetLimitedJournalEntryStackEnumerable();
return(new UnifiedJournalEntryStackEnumerable(limitedBackStack, limitedForwardStack));
}
}
return(null);
}
internal UnifiedJournalEntryStackEnumerable(LimitedJournalEntryStackEnumerable backStack, LimitedJournalEntryStackEnumerable forwardStack)
{
_backStack = backStack;
_backStack.CollectionChanged += new NotifyCollectionChangedEventHandler(StacksChanged);
_forwardStack = forwardStack;
_forwardStack.CollectionChanged += new NotifyCollectionChangedEventHandler(StacksChanged);
}