private void UpdateTextColor(FilterName[] filterNames)
{
if(parser == null) {
parser = new Parser(new ExpressionFilter());
}
else {
parser.FieldFilters.Clear();
}
int position = ExpressionText.SelectionStart;
ExpressionText.HideSelection = true;
ExpressionText.SuspendLayout();
// add filter names
Dictionary<string, FilterName> filterDictionary = new Dictionary<string, FilterName>();
for(int i = 0; i < filterNames.Length; i++) {
parser.FieldFilters.Add(filterNames[i].Name);
if(filterDictionary.ContainsKey(filterNames[i].Name) == false) {
filterDictionary.Add(filterNames[i].Name, filterNames[i]);
}
}
parser.Text = ExpressionText.Text + " ";
parser.InitParsing();
TextBlock? block = parser.GetNextBlock();
StringBuilder builder = new StringBuilder();
StringBuilder textBuilder = new StringBuilder(ExpressionText.Text);
int diff = 0;
builder.Append("{\\rtf1\\ansi\\deff0");
// color table
//
// 1 2 3 4 5
// colors: black, blue, red, dark violet, gray
builder.Append("{\\colortbl;\\red0\\green0\\blue0;\\red0\\green0\\blue255;\\red255\\green0\\blue0;\\red148\\green0\\blue211;\\red128\\green128\\blue128;}");
// parse the text
while(block.HasValue) {
TextBlock b = block.Value;
if(b.Type == TextBlockType.Keyword) {
/*ExpressionText.SelectionStart = b.StartIndex;
ExpressionText.SelectionLength = b.EndIndex - b.StartIndex + 1;
ExpressionText.SelectionColor = Color.DarkViolet;*/
if(b.EndIndex - b.StartIndex > 0) {
textBuilder.Replace(b.Text, "\\highlight0\\cf4" + b.Text, diff + b.StartIndex, b.EndIndex - b.StartIndex);
diff += 15;
}
}
else if(b.Type == TextBlockType.Field) {
int color = 5;
/*ExpressionText.SelectionStart = b.StartIndex;
ExpressionText.SelectionLength = b.EndIndex - b.StartIndex;
*/
// set color
if(filterDictionary.ContainsKey(b.Text) == false ||
(filterDictionary.ContainsKey(b.Text) && filterDictionary[b.Text].Enabled == false)) {
//ExpressionText.SelectionColor = Color.Gray;
color = 5;
}
else {
//ExpressionText.SelectionColor = Color.Blue;
color = 2;
}
// append
if(b.EndIndex - b.StartIndex > 0) {
textBuilder.Replace(b.Text, "\\highlight0\\cf" + color.ToString() + b.Text, diff + b.StartIndex, b.EndIndex - b.StartIndex);
diff += 15;
}
}
else if(ContainsParantesis(b.Text) == false &&
ContainsName(b.Text, filterNames) == false) {
/*// mark as error
ExpressionText.SelectionStart = b.StartIndex;
ExpressionText.SelectionLength = b.EndIndex - b.StartIndex;
ExpressionText.SelectionBackColor = Color.LightCoral;*/
if(b.EndIndex - b.StartIndex > 0) {
textBuilder.Replace(b.Text, "\\highlight0\\cf3" + b.Text, diff + b.StartIndex, b.EndIndex - b.StartIndex);
diff += 15;
}
}
else {
// unknown
if(b.EndIndex - b.StartIndex > 0) {
textBuilder.Replace(b.Text, "\\highlight0\\cf1" + b.Text, diff + b.StartIndex, b.EndIndex - b.StartIndex);
diff += 15;
}
}
block = parser.GetNextBlock();
}
updatingColor = true;
builder.Append(textBuilder.ToString());
ExpressionText.Rtf = builder.ToString();
ExpressionText.SelectionStart = position;
ExpressionText.SelectionLength = 0;
updatingColor = false;
}
private bool ContainsName(string text, FilterName[] filterNames)
{
for(int i = 0; i < filterNames.Length; i++) {
if(filterNames[i].Name.StartsWith(text)) {
return true;
}
}
return false;
}
