public void CompleteAttributeValue(string line, int caretColumn)
{
// Get information about what's being worked on
XMLAnalysis analysis = XMLAnalysis.AnalyzeLine(line, caretColumn);
if (analysis.CurrentAttribute == null || !analysis.IsCaretInsideAttributeValue)
{
return; // Not typing out an attribute value
}
// Get the tag that's being worked on
CompletableXMLTag tag;
if (!_tagsByName.TryGetValue(analysis.CurrentTag, out tag))
{
return;
}
// Get the attribute that's being worked on
CompletableXMLAttribute attribute = tag.FindAttributeByName(analysis.CurrentAttribute);
if (attribute == null || !attribute.HasValues)
{
return;
}
// Raise the ValueCompletionAvailable event
var args = new ValueCompletionEventArgs(attribute.Values);
OnValueCompletionAvailable(args);
}
public void CompleteAttributeName(string line, int caretColumn)
{
// Get information about what's being worked on
XMLAnalysis analysis = XMLAnalysis.AnalyzeLine(line, caretColumn);
if (!analysis.CanInsertAttribute)
{
return;
}
// Get the tag that's being worked on
CompletableXMLTag tag;
if (!_tagsByName.TryGetValue(analysis.CurrentTag, out tag))
{
return;
}
// Only suggest attributes which haven't been defined yet
var suggestions = new List <CompletableXMLAttribute>();
foreach (CompletableXMLAttribute attribute in tag.Attributes)
{
if (!analysis.Attributes.Contains(attribute.Name))
{
suggestions.Add(attribute);
}
}
if (suggestions.Count == 0)
{
return;
}
// Raise the AttributeCompletionAvailable event
var args = new AttributeCompletionEventArgs(suggestions);
OnAttributeCompletionAvailable(args);
}
/// <summary>
/// Analyzes a line of XML markup and retrieves information about it and where the caret is at.
/// </summary>
/// <param name="line">The line of markup to analyze.</param>
/// <param name="caretColumn">The zero-based index of the column the caret is in.</param>
/// <returns>The analysis results.</returns>
public static XMLAnalysis AnalyzeLine(string line, int caretColumn)
{
var results = new XMLAnalysis();
bool inTag = false;
bool insideTagName = false;
string currentTag = null;
string currentAttribute = null;
int firstLetterPos = -1;
int lastLetterPos = -1;
int lastOpenTagPos = -1;
char quoteType = '\0';
var attributes = new HashSet<string>();
for (int i = 0; i <= line.Length; i++)
{
if (i == caretColumn)
{
// Store caret-position-related results
results.IsCaretInsideTag = inTag;
results.IsCaretInsideAttributeValue = (quoteType != '\0');
results.CurrentTag = currentTag;
results.Attributes = attributes;
results.CurrentAttribute = currentAttribute;
}
if (i == line.Length)
break;
char ch = line[i];
if (inTag && (ch == '"' || ch == '\''))
{
if (quoteType == ch)
{
quoteType = '\0'; // Left quotes
currentAttribute = null;
}
else if (quoteType == '\0')
{
quoteType = ch; // Entered quotes
}
}
else if (quoteType == '\0')
{
if (ch == '<')
{
lastOpenTagPos = i;
inTag = true;
insideTagName = true;
firstLetterPos = -1;
attributes = new HashSet<string>();
currentTag = null;
currentAttribute = null;
}
else if (ch == '>')
{
inTag = false;
insideTagName = false;
firstLetterPos = -1;
currentTag = null;
currentAttribute = null;
}
else if (char.IsLetter(ch) || (firstLetterPos > 0 && char.IsDigit(ch)))
{
if (firstLetterPos < 0)
firstLetterPos = i;
lastLetterPos = i;
currentAttribute = null;
}
else if (firstLetterPos > 0)
{
if (insideTagName)
{
currentTag = line.Substring(firstLetterPos, lastLetterPos - firstLetterPos + 1);
insideTagName = false;
}
else if (ch == '=')
{
currentAttribute = line.Substring(firstLetterPos, lastLetterPos - firstLetterPos + 1);
attributes.Add(currentAttribute);
}
else
{
continue;
}
firstLetterPos = -1;
}
}
}
return results;
}
/// <summary>
/// Analyzes a line of XML markup and retrieves information about it and where the caret is at.
/// </summary>
/// <param name="line">The line of markup to analyze.</param>
/// <param name="caretColumn">The zero-based index of the column the caret is in.</param>
/// <returns>The analysis results.</returns>
public static XMLAnalysis AnalyzeLine(string line, int caretColumn)
{
var results = new XMLAnalysis();
bool inTag = false;
bool insideTagName = false;
string currentTag = null;
string currentAttribute = null;
int firstLetterPos = -1;
int lastLetterPos = -1;
int lastOpenTagPos = -1;
char quoteType = '\0';
var attributes = new HashSet <string>();
for (int i = 0; i <= line.Length; i++)
{
if (i == caretColumn)
{
// Store caret-position-related results
results.IsCaretInsideTag = inTag;
results.IsCaretInsideAttributeValue = (quoteType != '\0');
results.CurrentTag = currentTag;
results.Attributes = attributes;
results.CurrentAttribute = currentAttribute;
}
if (i == line.Length)
{
break;
}
char ch = line[i];
if (inTag && (ch == '"' || ch == '\''))
{
if (quoteType == ch)
{
quoteType = '\0'; // Left quotes
currentAttribute = null;
}
else if (quoteType == '\0')
{
quoteType = ch; // Entered quotes
}
}
else if (quoteType == '\0')
{
if (ch == '<')
{
lastOpenTagPos = i;
inTag = true;
insideTagName = true;
firstLetterPos = -1;
attributes = new HashSet <string>();
currentTag = null;
currentAttribute = null;
}
else if (ch == '>')
{
inTag = false;
insideTagName = false;
firstLetterPos = -1;
currentTag = null;
currentAttribute = null;
}
else if (char.IsLetter(ch) || (firstLetterPos > 0 && char.IsDigit(ch)))
{
if (firstLetterPos < 0)
{
firstLetterPos = i;
}
lastLetterPos = i;
currentAttribute = null;
}
else if (firstLetterPos > 0)
{
if (insideTagName)
{
currentTag = line.Substring(firstLetterPos, lastLetterPos - firstLetterPos + 1);
insideTagName = false;
}
else if (ch == '=')
{
currentAttribute = line.Substring(firstLetterPos, lastLetterPos - firstLetterPos + 1);
attributes.Add(currentAttribute);
}
else
{
continue;
}
firstLetterPos = -1;
}
}
}
return(results);
}
