/// <summary>
/// Determines if element contains given position
/// </summary>
/// <param name="position">Position in a text buffer</param>
public override bool Contains(int position)
{
if (base.Contains(position))
{
return(true);
}
if (StartTag.Contains(position))
{
return(true);
}
if (EndTag != null)
{
if (EndTag.Contains(position))
{
return(true);
}
}
else
{
if (position == VirtualEnd && !IsShorthand() && !IsSelfClosing())
{
return(true);
}
}
return(false);
}
/// <summary>
/// Shifts node components that are located at or beyond given start point by the specified range
/// </summary>
/// <param name="start">Start point</param>
/// <param name="offset">Offset to shift by</param>
public override void ShiftStartingFrom(int start, int offset)
{
// short-circuit in the case where the shift starts after our end
if (start > End)
{
return;
}
// if tag is not closed and change is right at the end,
// e need to grow start tag rather than element inner range
if (StartTag.Contains(start) || StartTag.Start >= start || (!StartTag.IsClosed && start == StartTag.End))
{
StartTag.ShiftStartingFrom(start, offset);
}
if (EndTag != null && (EndTag.Contains(start) || EndTag.Start >= start))
{
EndTag.ShiftStartingFrom(start, offset);
}
if (OrphanedEndTagsCollection != null)
{
OrphanedEndTagsCollection.ShiftStartingFrom(start, offset);
}
if (VirtualEnd >= start)
{
VirtualEnd = Math.Max(start, VirtualEnd + offset);
}
int count = Children.Count;
for (int i = 0; i < count; i++)
{
Children[i].ShiftStartingFrom(start, offset);
}
}
/// <summary>
/// Determines position type and enclosing element node for a given position in the document text.
/// </summary>
/// <param name="position">Position in the document text</param>
/// <param name="element">Element that contains position</param>
/// <param name="attribute">Attribute that contains position (may be null)</param>
/// <returns>Position type as a set of flags combined via OR operation</returns>
public virtual HtmlPositionType GetPositionElement(int position, out ElementNode element, out AttributeNode attribute)
{
element = null;
attribute = null;
// If start tag is not closed, consider end position to be inside it
// so user can continue getting attribute intellisense, like in <a href=|<a ...></a>
if (StartTag.Contains(position) || (position == StartTag.End && !StartTag.IsClosed))
{
// If position is right at the start, it is actually before the tag (in parent's content),
// as if when caret position is like this: <table>|<tr></tr><table>
if (position == StartTag.Start)
{
element = this.Parent;
return(HtmlPositionType.InContent);
}
if (position >= QualifiedNameRange.Start && position <= StartTag.QualifiedNameRange.End)
{
element = this;
return(HtmlPositionType.ElementName);
}
element = this;
for (int i = 0; i < Attributes.Count; i++)
{
var attrNode = Attributes[i];
bool hasClosingQuote = false;
var valueToken = attrNode.ValueToken;
hasClosingQuote = (valueToken != null) && (valueToken.CloseQuote != '\0');
if (position == attrNode.End && hasClosingQuote)
{
break;
}
if (position > attrNode.End)
{
continue;
}
if (position < attrNode.Start)
{
break;
}
if (attrNode.Contains(position) || (position == attrNode.End && !hasClosingQuote))
{
attribute = attrNode;
return(attrNode.GetPositionType(position));
}
}
return(HtmlPositionType.InStartTag);
}
if (!this.Contains(position))
{
return(HtmlPositionType.Undefined);
}
for (int i = 0; i < this.Children.Count; i++)
{
var child = Children[i];
if (position < child.Start)
{
break;
}
if (child.Contains(position))
{
return(child.GetPositionElement(position, out element, out attribute));
}
}
element = this;
// If position is right at the start, it is actually before the end tag,
// like when caret is between opening and closing tags: <table>|<table>
if (EndTag != null)
{
if (position == EndTag.Start)
{
return(HtmlPositionType.InContent);
}
if (EndTag.Contains(position))
{
return(HtmlPositionType.InEndTag);
}
}
if (this.IsScriptBlock())
{
return(HtmlPositionType.InScriptBlock);
}
if (this.IsStyleBlock())
{
return(HtmlPositionType.InStyleBlock);
}
return(HtmlPositionType.InContent);
}