private bool completeBasedOnTextEntered(TextCompositionEventArgs e)
{
try
{
switch (e.Text)
{
case ">":
{
//auto-insert closing element
int offset = _editor.CaretOffset;
string s = XParser.GetElementAtCursor(_editor.Text, offset - 1);
if (!string.IsNullOrWhiteSpace(s) && "!--" != s)
{
if (!XParser.IsClosingElement(_editor.Text, offset - 1, s))
{
string endElement = "</" + s + ">";
var rightOfCursor = _editor.Text.Substring(offset, Math.Max(0, Math.Min(endElement.Length + 50, _editor.Text.Length) - offset - 1)).TrimStart();
if (!rightOfCursor.StartsWith(endElement))
{
_editor.TextArea.Document.Insert(offset, endElement);
_editor.CaretOffset = offset;
return(true);
}
}
}
break;
}
case "/":
{
//insert name of closing element
int offset = _editor.CaretOffset;
if (offset > 1 && _editor.Text[offset - 2] == '<')
{
//expand to closing tag
string s = XParser.GetParentElementAtCursor(_editor.Text, offset - 1);
if (!string.IsNullOrEmpty(s))
{
showCompletion(new List <ICompletionData>
{
new MyCompletionData(s + ">")
});
return(true);
}
}
if (_editor.Text.Length > offset + 2 && _editor.Text[offset] == '>')
{
//remove closing tag if exist
string s = XParser.GetElementAtCursor(_editor.Text, offset - 1);
if (!string.IsNullOrWhiteSpace(s))
{
//search closing end tag. Element must be empty (whitespace allowed)
//"<hallo> </hallo>" --> enter '/' --> "<hallo/> "
string expectedEndTag = "</" + s + ">";
for (int i = offset + 1; i < _editor.Text.Length - expectedEndTag.Length + 1; i++)
{
if (!char.IsWhiteSpace(_editor.Text[i]))
{
if (_editor.Text.Substring(i, expectedEndTag.Length) == expectedEndTag)
{
//remove already existing endTag
_editor.Document.Remove(i, expectedEndTag.Length);
}
break;
}
}
}
}
break;
}
case "!":
{
int offset = _editor.CaretOffset;
if (offset > 1 && _editor.Text[offset - 2] == '<')
{
_editor.TextArea.Document.Insert(offset, "-- ");
_editor.CaretOffset = offset + 2;
return(true);
}
break;
}
case "\"":
{
//auto-insert closing apostroph
int offset = _editor.CaretOffset;
int countApostroph = 0;
for (int i = offset; i >= 0; i--)
{
char charAtCursor = _editor.Text[i];
if (charAtCursor == '\"')
{
countApostroph++;
}
else if (charAtCursor == '<')
{
break;
}
}
bool oddLeft = (countApostroph % 2 == 1);
for (int i = offset; i < _editor.Text.Length; i++)
{
char charAtCursor = _editor.Text[i];
if (charAtCursor == '\"')
{
countApostroph++;
}
else if (charAtCursor == '>')
{
break;
}
}
bool oddRight = (countApostroph % 2 == 1);
if (oddLeft && oddRight)
{
_editor.TextArea.Document.Insert(offset, "\"");
_editor.CaretOffset = offset;
return(true);
}
break;
}
case " ":
{
//when user writes an element/attribute, completion shall pop up on whitespace
bool result = checkAttributeCompletion();
if (result)
{
return(true);
}
break;
}
case "<":
{
if (_schemaParser == null)
{
return(false);
}
int offset = _editor.CaretOffset;
string parent = XParser.GetParentElementAtCursor(_editor.Text, offset);
XsdElement[] names;
if (parent == "")
{
IXsdNode root = _schemaParser.GetVirtualRoot();
names = getChildNames(root);
}
else
{
IList <IXsdNode> all = _schemaParser.GetAllNodes();
IXsdNode node = getNodeWithName(all, parent);
if (node != null)
{
names = getChildNames(node);
}
else
{
names = null;
}
}
if (names != null && names.Length > 0)
{
IList <ICompletionData> data = new List <ICompletionData>();
foreach (XsdElement name in names)
{
if (name.Annotation != null && name.Annotation.Count > 0)
{
StringBuilder sb = new StringBuilder();
foreach (string ann in name.Annotation)
{
sb.AppendLine(ann);
}
data.Add(new MyCompletionData(name.Name, sb.ToString()));
}
else
{
data.Add(new MyCompletionData(name.Name));
}
}
showCompletion(data);
return(true);
}
break;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Error");
}
return(false);
}
