// Token: 0x06002B78 RID: 11128 RVA: 0x000C6664 File Offset: 0x000C4864
internal void GetPageAsync(int pageNumber, object userState)
{
if (pageNumber < 0)
{
throw new ArgumentOutOfRangeException("pageNumber", SR.Get("IDPNegativePageNumber"));
}
if (userState == null)
{
throw new ArgumentNullException("userState");
}
FixedDocumentSequence.GetPageAsyncRequest getPageAsyncRequest = new FixedDocumentSequence.GetPageAsyncRequest(new FixedDocumentSequence.RequestedPage(pageNumber), userState);
this._asyncOps[userState] = getPageAsyncRequest;
DispatcherOperationCallback method = new DispatcherOperationCallback(this._GetPageAsyncDelegate);
base.Dispatcher.BeginInvoke(DispatcherPriority.Background, method, getPageAsyncRequest);
}
// Token: 0x06002B92 RID: 11154 RVA: 0x000C6E1C File Offset: 0x000C501C
private object _GetPageAsyncDelegate(object arg)
{
FixedDocumentSequence.GetPageAsyncRequest getPageAsyncRequest = (FixedDocumentSequence.GetPageAsyncRequest)arg;
int pageNumber = getPageAsyncRequest.Page.PageNumber;
if (getPageAsyncRequest.Cancelled || !this.TranslatePageNumber(pageNumber, out getPageAsyncRequest.Page.ChildPaginator, out getPageAsyncRequest.Page.ChildPageNumber) || getPageAsyncRequest.Cancelled)
{
this._NotifyGetPageAsyncCompleted(DocumentPage.Missing, pageNumber, null, true, getPageAsyncRequest.UserState);
this._asyncOps.Remove(getPageAsyncRequest.UserState);
return(null);
}
if (!this._pendingPages.Contains(getPageAsyncRequest.Page))
{
this._pendingPages.Add(getPageAsyncRequest.Page);
getPageAsyncRequest.Page.ChildPaginator.GetPageCompleted += this._OnGetPageCompleted;
getPageAsyncRequest.Page.ChildPaginator.GetPageAsync(getPageAsyncRequest.Page.ChildPageNumber, getPageAsyncRequest);
}
return(null);
}
// Token: 0x06002B7A RID: 11130 RVA: 0x000C6748 File Offset: 0x000C4948
internal void CancelAsync(object userState)
{
if (userState == null)
{
throw new ArgumentNullException("userState");
}
if (this._asyncOps.ContainsKey(userState))
{
FixedDocumentSequence.GetPageAsyncRequest getPageAsyncRequest = this._asyncOps[userState];
if (getPageAsyncRequest != null)
{
getPageAsyncRequest.Cancelled = true;
if (getPageAsyncRequest.Page.ChildPaginator != null)
{
getPageAsyncRequest.Page.ChildPaginator.CancelAsync(getPageAsyncRequest);
}
}
}
}
// Token: 0x06002B93 RID: 11155 RVA: 0x000C6EF0 File Offset: 0x000C50F0
private void _OnGetPageCompleted(object sender, GetPageCompletedEventArgs args)
{
FixedDocumentSequence.GetPageAsyncRequest getPageAsyncRequest = (FixedDocumentSequence.GetPageAsyncRequest)args.UserState;
this._pendingPages.Remove(getPageAsyncRequest.Page);
DocumentPage page = DocumentPage.Missing;
int pageNumber = getPageAsyncRequest.Page.PageNumber;
if (!args.Cancelled && args.Error == null && args.DocumentPage != DocumentPage.Missing)
{
page = new FixedDocumentSequenceDocumentPage(this, (DynamicDocumentPaginator)sender, args.DocumentPage);
this._SynthesizeGlobalPageNumber((DynamicDocumentPaginator)sender, args.PageNumber, out pageNumber);
}
if (!args.Cancelled)
{
ArrayList arrayList = new ArrayList();
IEnumerator <KeyValuePair <object, FixedDocumentSequence.GetPageAsyncRequest> > enumerator = this._asyncOps.GetEnumerator();
try
{
while (enumerator.MoveNext())
{
KeyValuePair <object, FixedDocumentSequence.GetPageAsyncRequest> keyValuePair = enumerator.Current;
FixedDocumentSequence.GetPageAsyncRequest value = keyValuePair.Value;
if (getPageAsyncRequest.Page.Equals(value.Page))
{
ArrayList arrayList2 = arrayList;
keyValuePair = enumerator.Current;
arrayList2.Add(keyValuePair.Key);
this._NotifyGetPageAsyncCompleted(page, pageNumber, args.Error, value.Cancelled, value.UserState);
}
}
}
finally
{
foreach (object key in arrayList)
{
this._asyncOps.Remove(key);
}
}
}
}