private static void AssertFormatException(FormattingAction action)
{
try {
action();
Assert.Fail("Should have thrown an exception.");
} catch (FormatException) {
// success
}
}
internal FormatCommandGroup(string groupString)
{
//If this is a command, we need to split it and work out each command separately
if (groupString[0] == '[')
{
//Cut the brackets off the ends
groupString = groupString.Substring(1, groupString.Length - 2);
//Split up the different commands
var parts = groupString.Split(';');
foreach (var p in parts)
{
FormattingAction fa = null;
//Character skipping
if (p[0] == '>')
{
fa = new SkipCharacterFormatAction(p);
}
//Character range substring
else if (Regex.IsMatch(p, "^(_|[^-]+)-(_|.+)$"))
{
fa = new SubstringRangeFormatAction(p);
}
//Traditional substring (start, length optionally)
else if (Regex.IsMatch(p, "^(_|[^,]+)(,.+)?$"))
{
fa = new SubstringFormatAction(p);
}
_formattingActions.Add(fa);
}
}
//If this is not a command block, it is a literal
else
{
_formattingActions.Add(new StringLiteralAction(groupString));
}
}
private static void AssertFormatException(FormattingAction action)
{
try {
action();
Assert.Fail("Should have thrown an exception.");
} catch (FormatException) {
// success
}
}
internal void AddCommand(FormattingAction fa)
{
_formattingActions.Add(fa);
}
/// <summary>
/// Sets proper formatting to text in the RichTexBox.
/// </summary>
/// <param name="input">Property used by dropdowns passing through selected value.</param>
/// <param name="action">Type of formatting to be applied to the text.</param>
/// <param name="isChecked">Property used by button actions indicating whether toggled button is checked or not.</param>
private void OnTextFormattingChanged(string input, FormattingAction action, bool isChecked = false)
{
if (TextBox == null)
{
return;
}
if (string.IsNullOrEmpty(input))
{
return;
}
var target = TextBox;
// Check whether there is text selected or just sitting at cursor
if (target.Selection.IsEmpty)
{
// Check to see if we are at the start of the textbox and nothing has been added yet
if (target.Selection.Start.Paragraph == null)
{
// Add a new paragraph object to the richtextbox with the fontsize
var p = new Paragraph();
switch (action)
{
case FormattingAction.ChangeFontSize:
p.FontSize = double.Parse(input);
break;
case FormattingAction.ChangeFontFamily:
p.FontFamily = new FontFamily(input);
break;
case FormattingAction.ChangeBold:
p.FontWeight = isChecked ? FontWeights.Bold : FontWeights.Normal;
break;
case FormattingAction.ChangeItalic:
p.FontStyle = isChecked ? FontStyles.Italic : FontStyles.Normal;
break;
}
target.Document.Blocks.Add(p);
}
else
{
// Get current position of cursor
var curCaret = target.CaretPosition;
// Get the current block object that the cursor is in
var curBlock = target.Document.Blocks.FirstOrDefault(x => x.ContentStart.CompareTo(curCaret) == -1 && x.ContentEnd.CompareTo(curCaret) == 1);
if (curBlock != null)
{
var curParagraph = curBlock as Paragraph;
// Create a new run object with the fontsize, and add it to the current block
var newRun = new Run();
switch (action)
{
case FormattingAction.ChangeFontSize:
newRun.FontSize = double.Parse(input);
break;
case FormattingAction.ChangeFontFamily:
newRun.FontFamily = new FontFamily(input);
break;
case FormattingAction.ChangeBold:
newRun.FontWeight = isChecked ? FontWeights.Bold : FontWeights.Normal;
break;
case FormattingAction.ChangeItalic:
newRun.FontStyle = isChecked ? FontStyles.Italic : FontStyles.Normal;
break;
}
curParagraph?.Inlines.Add(newRun);
// Reset the cursor into the new block.
// If we don't do this, the font size will default again when you start typing.
target.CaretPosition = newRun.ElementStart;
}
}
}
else // There is selected text, so change the fontsize of the selection
{
var selectionTextRange = new TextRange(target.Selection.Start, target.Selection.End);
switch (action)
{
case FormattingAction.ChangeFontSize:
selectionTextRange.ApplyPropertyValue(TextElement.FontSizeProperty, double.Parse(input));
break;
case FormattingAction.ChangeFontFamily:
selectionTextRange.ApplyPropertyValue(TextElement.FontFamilyProperty, new FontFamily(input));
break;
case FormattingAction.ChangeBold:
selectionTextRange.ApplyPropertyValue(TextElement.FontWeightProperty,
isChecked ? FontWeights.Bold : FontWeights.Normal);
break;
case FormattingAction.ChangeItalic:
selectionTextRange.ApplyPropertyValue(TextElement.FontStyleProperty,
isChecked ? FontStyles.Italic : FontStyles.Normal);
break;
}
}
// Reset the focus onto the richtextbox after selecting the font in a toolbar etc
target.Focus();
}