internal static ITextRange Find(FindToolBar findToolBar, TextEditor textEditor, ITextView textView, ITextView masterPageTextView)
{
string searchText;
FindFlags findFlags;
ITextContainer textContainer;
ITextRange textSelection;
ITextPointer contentStart;
ITextPointer contentEnd;
ITextPointer startPointer = null;
ITextRange findResult = null;
Invariant.Assert(findToolBar != null);
Invariant.Assert(textEditor != null);
// Set up our FindOptions from the options in the Find Toolbar.
findFlags = FindFlags.None;
findFlags |= (findToolBar.SearchUp ? FindFlags.FindInReverse : FindFlags.None);
findFlags |= (findToolBar.MatchCase ? FindFlags.MatchCase : FindFlags.None);
findFlags |= (findToolBar.MatchWholeWord ? FindFlags.FindWholeWordsOnly : FindFlags.None);
findFlags |= (findToolBar.MatchDiacritic ? FindFlags.MatchDiacritics : FindFlags.None);
findFlags |= (findToolBar.MatchKashida ? FindFlags.MatchKashida : FindFlags.None);
findFlags |= (findToolBar.MatchAlefHamza ? FindFlags.MatchAlefHamza : FindFlags.None);
// Get the text container for our content.
textContainer = textEditor.TextContainer;
textSelection = textEditor.Selection;
// Initialize other Find parameters
searchText = findToolBar.SearchText;
CultureInfo cultureInfo = GetDocumentCultureInfo(textContainer);
// The find behavior below is defined in section 2.2.3 of this spec:
// http://d2/DRX/Development%20Documents/02.01.00%20-%20UI%20Design.DocumentViewer.mht
// Determine if we have a starting selection
if (textSelection.IsEmpty)
{
if (textView != null && !textView.IsValid)
{
textView = null;
}
// Determine if the IP/Selection is in view.
if (textView != null && textView.Contains(textSelection.Start))
{
// Case 1: Selection is empty and IP is currently visible.
// Search from this IP to the start/end of the document.
//We treat the start of the selection as the IP.
contentStart = findToolBar.SearchUp ? textContainer.Start : textSelection.Start;
contentEnd = findToolBar.SearchUp ? textSelection.Start : textContainer.End;
}
else
{
// Case 4: Selection is empty and IP is not currently visible.
// Search from the top of the current TextView to the end of the document,
// if searching down. If searchind up, search from the start of the document
// to the end position of the current TextView.
if (masterPageTextView != null && masterPageTextView.IsValid)
{
foreach (TextSegment textSegment in masterPageTextView.TextSegments)
{
if (textSegment.IsNull)
{
continue;
}
if (startPointer == null)
{
// Set initial masterPointer value.
startPointer = !findToolBar.SearchUp ? textSegment.Start : textSegment.End;
}
else
{
if (!findToolBar.SearchUp)
{
if (textSegment.Start.CompareTo(startPointer) < 0)
{
// Start is before the current masterPointer
startPointer = textSegment.Start;
}
}
else
{
// end is after than the current masterPointer
if (textSegment.End.CompareTo(startPointer) > 0)
{
startPointer = textSegment.End;
}
}
}
}
}
if (startPointer != null)
{
// Now build the content range from that pointer to the start/end of the document.
// Set content start/end pointer to the content of the find document
contentStart = findToolBar.SearchUp ? textContainer.Start : startPointer;
contentEnd = findToolBar.SearchUp ? startPointer : textContainer.End;
}
else
{
// We were unable to determine the viewing area (form TextView),
// just use the entire TextContainer.
contentStart = textContainer.Start;
contentEnd = textContainer.End;
}
}
}
else
{
// Determine if the search text is already selected in the document.
findResult = TextFindEngine.Find(textSelection.Start, textSelection.End, searchText, findFlags, cultureInfo);
// To see if our Text ranges are the same, we will verify that
// their start and end points are the same.
if ((findResult != null) &&
(findResult.Start != null) &&
(findResult.Start.CompareTo(textSelection.Start) == 0) &&
(findResult.End.CompareTo(textSelection.End) == 0))
{
// Case 2: Selection exists and it matches the search text.
// Search from the end of the given selection.
contentStart = findToolBar.SearchUp ? textSelection.Start : textSelection.End;
contentEnd = findToolBar.SearchUp ? textContainer.Start : textContainer.End;
}
else
{
// Case 3: Selection exists and it does not match the search text.
// Search from the beginning of the given selection to the end of the document.
contentStart = findToolBar.SearchUp ? textSelection.End : textSelection.Start;
contentEnd = findToolBar.SearchUp ? textContainer.Start : textContainer.End;
}
}
// We should have content. Try to find something.
findResult = null;
if (contentStart != null && contentEnd != null && contentStart.CompareTo(contentEnd) != 0)
{
// We might legimately have crossed start/end given our logic above.
// It's easier to untangle the range here.
if (contentStart.CompareTo(contentEnd) > 0)
{
ITextPointer temp = contentStart;
contentStart = contentEnd;
contentEnd = temp;
}
findResult = TextFindEngine.Find(contentStart, contentEnd, searchText, findFlags, cultureInfo);
if ((findResult != null) && (!findResult.IsEmpty))
{
textSelection.Select(findResult.Start, findResult.End);
}
}
return(findResult);
}
internal static ITextRange Find(FindToolBar findToolBar, TextEditor textEditor, ITextView textView, ITextView masterPageTextView)
{
ITextPointer textPointer = null;
Invariant.Assert(findToolBar != null);
Invariant.Assert(textEditor != null);
FindFlags findFlags = FindFlags.None;
findFlags |= (findToolBar.SearchUp ? FindFlags.FindInReverse : FindFlags.None);
findFlags |= (findToolBar.MatchCase ? FindFlags.MatchCase : FindFlags.None);
findFlags |= (findToolBar.MatchWholeWord ? FindFlags.FindWholeWordsOnly : FindFlags.None);
findFlags |= (findToolBar.MatchDiacritic ? FindFlags.MatchDiacritics : FindFlags.None);
findFlags |= (findToolBar.MatchKashida ? FindFlags.MatchKashida : FindFlags.None);
findFlags |= (findToolBar.MatchAlefHamza ? FindFlags.MatchAlefHamza : FindFlags.None);
ITextContainer textContainer = textEditor.TextContainer;
ITextRange selection = textEditor.Selection;
string searchText = findToolBar.SearchText;
CultureInfo documentCultureInfo = DocumentViewerHelper.GetDocumentCultureInfo(textContainer);
ITextPointer textPointer2;
ITextPointer textPointer3;
ITextRange textRange;
if (selection.IsEmpty)
{
if (textView != null && !textView.IsValid)
{
textView = null;
}
if (textView != null && textView.Contains(selection.Start))
{
textPointer2 = (findToolBar.SearchUp ? textContainer.Start : selection.Start);
textPointer3 = (findToolBar.SearchUp ? selection.Start : textContainer.End);
}
else
{
if (masterPageTextView != null && masterPageTextView.IsValid)
{
foreach (TextSegment textSegment in masterPageTextView.TextSegments)
{
if (!textSegment.IsNull)
{
if (textPointer == null)
{
textPointer = ((!findToolBar.SearchUp) ? textSegment.Start : textSegment.End);
}
else if (!findToolBar.SearchUp)
{
if (textSegment.Start.CompareTo(textPointer) < 0)
{
textPointer = textSegment.Start;
}
}
else if (textSegment.End.CompareTo(textPointer) > 0)
{
textPointer = textSegment.End;
}
}
}
}
if (textPointer != null)
{
textPointer2 = (findToolBar.SearchUp ? textContainer.Start : textPointer);
textPointer3 = (findToolBar.SearchUp ? textPointer : textContainer.End);
}
else
{
textPointer2 = textContainer.Start;
textPointer3 = textContainer.End;
}
}
}
else
{
textRange = TextFindEngine.Find(selection.Start, selection.End, searchText, findFlags, documentCultureInfo);
if (textRange != null && textRange.Start != null && textRange.Start.CompareTo(selection.Start) == 0 && textRange.End.CompareTo(selection.End) == 0)
{
textPointer2 = (findToolBar.SearchUp ? selection.Start : selection.End);
textPointer3 = (findToolBar.SearchUp ? textContainer.Start : textContainer.End);
}
else
{
textPointer2 = (findToolBar.SearchUp ? selection.End : selection.Start);
textPointer3 = (findToolBar.SearchUp ? textContainer.Start : textContainer.End);
}
}
textRange = null;
if (textPointer2 != null && textPointer3 != null && textPointer2.CompareTo(textPointer3) != 0)
{
if (textPointer2.CompareTo(textPointer3) > 0)
{
ITextPointer textPointer4 = textPointer2;
textPointer2 = textPointer3;
textPointer3 = textPointer4;
}
textRange = TextFindEngine.Find(textPointer2, textPointer3, searchText, findFlags, documentCultureInfo);
if (textRange != null && !textRange.IsEmpty)
{
selection.Select(textRange.Start, textRange.End);
}
}
return(textRange);
}