/// <summary>
/// Returns the text to use as a replacement.
/// </summary>
/// <param name="textBox">Target text box.</param>
/// <param name="parameter">Text data to insert.</param>
/// <returns>Indented text to use as a replacement.</returns>
protected override string GetText(TextBox textBox, object parameter)
{
return parameter == null ? null
: ApplyIndentation(parameter.ToString(),
GetIndentation(textBox.GetLineText(textBox.GetLineIndexFromCharacterIndex(textBox.CaretIndex))));
}
public void TextBoxGetLineIndexFromCharacterIndexTest()
{
TextBox textBox = new TextBox { Text = TestText };
Assert.AreEqual(-1, textBox.GetCharacterIndexFromLineIndex(-1));
Assert.AreEqual(-1, textBox.GetCharacterIndexFromLineIndex(20));
Assert.AreEqual(0, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("0")));
Assert.AreEqual(0, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("1")));
Assert.AreEqual(0, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("2")));
Assert.AreEqual(0, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("2") + 1));
Assert.AreEqual(0, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("2") + 2));
Assert.AreEqual(1, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("3")));
Assert.AreEqual(1, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("4")));
Assert.AreEqual(1, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("5")));
Assert.AreEqual(1, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("6")));
Assert.AreEqual(2, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("7")));
Assert.AreEqual(4, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("8")));
Assert.AreEqual(4, textBox.GetLineIndexFromCharacterIndex(TestText.IndexOf("9")));
}
