/// <summary>
/// OnCreateCustomInlineCallback
/// </summary>
/// <param name="e">CreateCustomInlineEventArgs</param>
protected void OnCreateCustomInlineCallback(CreateCustomInlineEventArgs e)
{
if (CreateCustomInlineCallback != null)
{
CreateCustomInlineCallback(this, e);
}
}
private void UpdateText(string originalText)
{
if (string.IsNullOrEmpty(originalText))
{
this.Text = "";
return;
}
this.Inlines.Clear();
bool isBold = false;
string part = "";
var originalTextLength = originalText.Length;
Brush customForegroundBrush = null;
int pos1 = 0;
while (pos1 != -1 || pos1 > originalText.Length - 1)
{
int pos2 = originalText.IndexOf('\\', pos1);
if (pos2 == -1)
{
part = originalText.Substring(pos1);
break;
}
part = originalText.Substring(pos1, pos2 - pos1);
if (originalTextLength < pos2 + 2)
{
break;
}
char command = originalText[pos2 + 1];
var run = new Run(part);
if (isBold)
{
run.FontWeight = FontWeights.Bold;
}
if (customForegroundBrush != null)
{
run.Foreground = customForegroundBrush;
}
this.Inlines.Add(run);
if (command == 'n') // new paragraph
{
this.Inlines.Add(new LineBreak());
if (originalTextLength > pos2 + 2 && originalText[pos2 + 2] == ' ') // Usually when text is entered in xaml, a new line in the xaml is converted into one space - just skip it
{
pos2++;
}
}
else if (command == 'b' || command == '!') // Toggle bold
{
isBold = !isBold;
}
else if (command == '*') // Orange square bullet sign
{
var bulletRun = new Run(" ▪ ");
bulletRun.Foreground = Brushes.Orange;
this.Inlines.Add(bulletRun);
}
else if (command == '_')
{
int spacesCount = CountChars(originalText, '_', pos2 + 1);
this.Inlines.Add(new Run(new string(' ', spacesCount)));
pos2 += spacesCount - 1;
}
else if (command == '#')
{
if (originalText[pos2 + 2] == '_')
{
customForegroundBrush = null;
pos2++;
}
else
{
string colorHexText = originalText.Substring(pos2 + 2, 6);
try
{
byte red = Convert.ToByte(colorHexText.Substring(0, 2), 16);
byte green = Convert.ToByte(colorHexText.Substring(2, 2), 16);
byte blue = Convert.ToByte(colorHexText.Substring(4, 2), 16);
customForegroundBrush = new SolidColorBrush(Color.FromRgb(red, green, blue));
}
catch
{
customForegroundBrush = null;
}
pos2 += 6;
}
}
else if (command == '\\')
{
// Add backslash
this.Inlines.Add(new Run("\\"));
}
else if (command == '@')
{
int pos3 = originalText.IndexOf(':', pos2 + 1);
int pos4 = originalText.IndexOf('|', pos3 + 1);
string anchorText = originalText.Substring(pos2 + 2, pos3 - pos2 - 2);
string urlAddress = originalText.Substring(pos3 + 1, pos4 - pos3 - 1);
var hyperlink = new Hyperlink(new Run(anchorText));
if (urlAddress.Length > 0)
{
hyperlink.NavigateUri = new Uri(urlAddress);
}
if (LinkForeground != null)
{
hyperlink.Foreground = LinkForeground;
}
if (isBold)
{
hyperlink.FontWeight = FontWeights.Bold;
}
hyperlink.RequestNavigate += HyperlinkOnRequestNavigate;
this.Inlines.Add(hyperlink);
pos2 = pos4 - 1;
}
else if (command >= '0' && command <= '9')
{
// Custom Inline action
// We trigger CreateCustomInline event and send the index of the commands (0 for '0', 1 for '1')
// and text content between start and end command markers.
// The event handler should create a custom Inline and set it to CreatedInline property.
int endPos = originalText.IndexOf("\\" + command, pos2 + 1); // find end of text for this custom action
if (endPos > 0)
{
var createCustomInlineEventArgs = new CreateCustomInlineEventArgs(customActionIndex: (int)(command - '0'),
contentText: originalText.Substring(pos2 + 2, endPos - pos2 - 2));
OnCreateCustomInlineCallback(createCustomInlineEventArgs);
if (createCustomInlineEventArgs.CreatedInline != null)
{
this.Inlines.Add(createCustomInlineEventArgs.CreatedInline);
pos1 = endPos + 2;
continue;
}
}
}
pos1 = pos2 + 2;
}
if (!string.IsNullOrEmpty(part))
{
this.Inlines.Add(part);
}
}
