/// <summary>
/// Updates entry of BreakRecordTable with new data.
/// </summary>
/// <param name="pageNumber">Index of the entry to update.</param>
/// <param name="page">DocumentPage object that has been just created.</param>
/// <param name="brOut">Output BreakRecord for created page.</param>
/// <param name="dependentMax">Last content position that can affect the output break record.</param>
internal void UpdateEntry(int pageNumber, FlowDocumentPage page, PageBreakRecord brOut, TextPointer dependentMax)
{
ITextView textView;
BreakRecordTableEntry entry;
bool isClean;
Invariant.Assert(pageNumber >= 0 && pageNumber <= _breakRecords.Count, "The previous BreakRecord does not exist.");
Invariant.Assert(page != null && page != DocumentPage.Missing, "Cannot update BRT with an invalid document page.");
// Get TextView for DocumentPage. This TextView is used to access list of
// content ranges. Those serve as optimalization in finding affeceted pages.
textView = (ITextView)((IServiceProvider)page).GetService(typeof(ITextView));
Invariant.Assert(textView != null, "Cannot access ITextView for FlowDocumentPage.");
// Get current state of BreakRecordTable
isClean = this.IsClean;
// Add new entry into BreakRecordTable
entry = new BreakRecordTableEntry();
entry.BreakRecord = brOut;
entry.DocumentPage = new WeakReference(page);
entry.TextSegments = textView.TextSegments;
entry.DependentMax = dependentMax;
if (pageNumber == _breakRecords.Count)
{
_breakRecords.Add(entry);
// Raise PaginationProgress event only if we did not have valid
// entry for specified page number.
_owner.OnPaginationProgress(pageNumber, 1);
}
else
{
// If old Page and/or BreakRecord are not changing, do not dispose them.
if (_breakRecords[pageNumber].BreakRecord != null &&
_breakRecords[pageNumber].BreakRecord != entry.BreakRecord)
{
_breakRecords[pageNumber].BreakRecord.Dispose();
}
if (_breakRecords[pageNumber].DocumentPage != null &&
_breakRecords[pageNumber].DocumentPage.Target != null &&
_breakRecords[pageNumber].DocumentPage.Target != entry.DocumentPage.Target)
{
((FlowDocumentPage)_breakRecords[pageNumber].DocumentPage.Target).Dispose();
}
_breakRecords[pageNumber] = entry;
}
// Raise PaginationCompleted event only if the BreakRecordTable just
// become clean.
if (!isClean && this.IsClean)
{
_owner.OnPaginationCompleted();
}
}
/// <summary>
/// Updates entry of BreakRecordTable with new data.
/// </summary>
/// <param name="pageNumber">Index of the entry to update.</param>
/// <param name="page">DocumentPage object that has been just created.</param>
/// <param name="brOut">Output BreakRecord for created page.</param>
/// <param name="dependentMax">Last content position that can affect the output break record.</param>
internal void UpdateEntry(int pageNumber, FlowDocumentPage page, PageBreakRecord brOut, TextPointer dependentMax)
{
ITextView textView;
BreakRecordTableEntry entry;
bool isClean;
Invariant.Assert(pageNumber >= 0 && pageNumber <= _breakRecords.Count, "The previous BreakRecord does not exist.");
Invariant.Assert(page != null && page != DocumentPage.Missing, "Cannot update BRT with an invalid document page.");
// Get TextView for DocumentPage. This TextView is used to access list of
// content ranges. Those serve as optimalization in finding affeceted pages.
textView = (ITextView)((IServiceProvider)page).GetService(typeof(ITextView));
Invariant.Assert(textView != null, "Cannot access ITextView for FlowDocumentPage.");
// Get current state of BreakRecordTable
isClean = this.IsClean;
// Add new entry into BreakRecordTable
entry = new BreakRecordTableEntry();
entry.BreakRecord = brOut;
entry.DocumentPage = new WeakReference(page);
entry.TextSegments = textView.TextSegments;
entry.DependentMax = dependentMax;
if (pageNumber == _breakRecords.Count)
{
_breakRecords.Add(entry);
// Raise PaginationProgress event only if we did not have valid
// entry for specified page number.
_owner.OnPaginationProgress(pageNumber, 1);
}
else
{
// If old Page and/or BreakRecord are not changing, do not dispose them.
if (_breakRecords[pageNumber].BreakRecord != null &&
_breakRecords[pageNumber].BreakRecord != entry.BreakRecord)
{
_breakRecords[pageNumber].BreakRecord.Dispose();
}
if (_breakRecords[pageNumber].DocumentPage != null &&
_breakRecords[pageNumber].DocumentPage.Target != null &&
_breakRecords[pageNumber].DocumentPage.Target != entry.DocumentPage.Target)
{
((FlowDocumentPage)_breakRecords[pageNumber].DocumentPage.Target).Dispose();
}
_breakRecords[pageNumber] = entry;
}
// Raise PaginationCompleted event only if the BreakRecordTable just
// become clean.
if (!isClean && this.IsClean)
{
_owner.OnPaginationCompleted();
}
}
