/// <summary>
/// Create a MarkupRange from a TextRange.
/// </summary>
/// <param name="textRange"></param>
/// <returns></returns>
public MarkupRange CreateMarkupRange(IHTMLTxtRange textRange)
{
MarkupPointer Begin = CreateMarkupPointer();
MarkupPointer End = CreateMarkupPointer();
End.Gravity = _POINTER_GRAVITY.POINTER_GRAVITY_Right;
MovePointersToRange(textRange, Begin, End);
MarkupRange markupRange = new MarkupRange(Begin, End, this);
return(markupRange);
}
/// <summary>
/// Creates a clone that spans the same range as this MarkupRange.
/// Note: The clone can be manipulated without changing the position of this range.
/// </summary>
/// <returns></returns>
public MarkupRange Clone()
{
MarkupRange clone = MarkupServices.CreateMarkupRange();
clone.Start.MoveToPointer(Start);
clone.Start.Cling = Start.Cling;
clone.Start.Gravity = Start.Gravity;
clone.End.MoveToPointer(End);
clone.End.Cling = End.Cling;
clone.End.Gravity = End.Gravity;
return(clone);
}
/// <summary>
/// Create a MarkupRange from that surrounds an Element.
/// </summary>
/// <returns></returns>
public MarkupRange CreateMarkupRange(IHTMLElement element, bool outside)
{
_ELEMENT_ADJACENCY beginAdj = outside ? _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeBegin : _ELEMENT_ADJACENCY.ELEM_ADJ_AfterBegin;
_ELEMENT_ADJACENCY endAdj = outside ? _ELEMENT_ADJACENCY.ELEM_ADJ_AfterEnd : _ELEMENT_ADJACENCY.ELEM_ADJ_BeforeEnd;
MarkupPointer Begin = CreateMarkupPointer(element, beginAdj);
MarkupPointer End = CreateMarkupPointer(element, endAdj);
End.Gravity = _POINTER_GRAVITY.POINTER_GRAVITY_Right;
MarkupRange markupRange = new MarkupRange(Begin, End, this);
return(markupRange);
}
} //ProcessTable
private MarkupRange GetMarkupRange()
{
MshtmlMarkupServices markupServices = new MshtmlMarkupServices((IMarkupServicesRaw)Document);
MarkupRange range = markupServices.CreateMarkupRange(Document.selection.createRange());
range.Start.Gravity = mshtml._POINTER_GRAVITY.POINTER_GRAVITY_Left;
range.End.Gravity = mshtml._POINTER_GRAVITY.POINTER_GRAVITY_Right;
range.Start.Cling = false;
range.End.Cling = false;
return(range);
}
/// <summary>
/// Create a MarkupRange from a selection object.
/// </summary>
public MarkupRange CreateMarkupRange(IHTMLSelectionObject selection)
{
if (selection == null)
{
return(null);
}
// see what type of range is selected
object range = selection.createRange();
if (range is IHTMLTxtRange)
{
return(CreateMarkupRange(range as IHTMLTxtRange));
}
else if (range is IHTMLControlRange)
{
// we only support single-selection so a "control-range" can always
// be converted into a single-element text range
IHTMLControlRange controlRange = range as IHTMLControlRange;
if (controlRange.length == 1)
{
IHTMLElement selectedElement = controlRange.item(0);
MarkupRange markupRange = CreateMarkupRange(selectedElement);
//return the precisely positioned text range
return(markupRange);
}
else
{
Debug.Fail("Length of control range not equal to 1 (value was " + controlRange.length.ToString(CultureInfo.InvariantCulture));
return(null);
}
}
else // null or unexpected range type
{
return(null);
}
}
/// <summary>
/// Create a MarkupRange from a set of MarkupPointers.
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <returns></returns>
public MarkupRange CreateMarkupRange(MarkupPointer start, MarkupPointer end)
{
MarkupRange markupRange = new MarkupRange(start, end, this);
return(markupRange);
}
public SelectionPreserver(MarkupRange selectedMarkupRange)
{
_preservedMarkupRange = selectedMarkupRange.Clone();
_preservedMarkupRange.Start.Cling = true;
_preservedMarkupRange.End.Cling = true;
}
