/// <inheritdoc/>
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonDown(e);
if (!e.Handled && TextView != null && textArea != null)
{
e.Handled = true;
textArea.Focus();
SimpleSegment currentSeg = GetTextLineSegment(e);
if (currentSeg == SimpleSegment.Invalid)
{
return;
}
textArea.Caret.Offset = currentSeg.Offset + currentSeg.Length;
if (CaptureMouse())
{
selecting = true;
selectionStart = new AnchorSegment(Document, currentSeg.Offset, currentSeg.Length);
if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
SimpleSelection simpleSelection = textArea.Selection as SimpleSelection;
if (simpleSelection != null)
{
selectionStart = new AnchorSegment(Document, simpleSelection);
}
}
textArea.Selection = new SimpleSelection(selectionStart);
if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
ExtendSelection(currentSeg);
}
}
}
}
/// <inheritdoc/>
public override bool Equals(object obj)
{
SimpleSelection other = obj as SimpleSelection;
if (other == null)
{
return(false);
}
if (IsEmpty && other.IsEmpty)
{
return(true);
}
return(this.startOffset == other.startOffset && this.endOffset == other.endOffset);
}