/// <summary>
/// Returns the line of text from the pipe textview that contains the caret.
/// </summary>
private string CurrentLine()
{
TextIter begIter = PipeTextView.Buffer.GetIterAtMark(PipeTextView.Buffer.InsertMark);
TextIter endIter = PipeTextView.Buffer.GetIterAtMark(PipeTextView.Buffer.InsertMark);
begIter.BackwardChars(begIter.LineOffset);
endIter.BackwardCursorPosition();
endIter.ForwardToLineEnd();
string line = PipeTextView.Buffer.GetText(begIter, endIter, false);
return(line);
}
protected virtual void PipeTextView_OnKeyReleaseEvent(object o, Gtk.KeyReleaseEventArgs e)
{
Gdk.Key theKey = e.Event.Key;
char theChar = (char)e.Event.KeyValue;
if (commandAutoCompletion)
{
bool controlPressed = (e.Event.State & Gdk.ModifierType.ControlMask) != 0;
bool altPressed = (e.Event.State & Gdk.ModifierType.Mod1Mask) != 0;
if (Char.IsLetter(theChar) && ((theKey != Gdk.Key.Home) &&
(theKey != Gdk.Key.Left) && (theKey != Gdk.Key.Right) &&
(theKey != Gdk.Key.Up) && (theKey != Gdk.Key.Down) &&
(theKey != Gdk.Key.Return) && (theKey != Gdk.Key.Delete) &&
(theKey != Gdk.Key.BackSpace) && (theKey != Gdk.Key.End)) &&
(!controlPressed) && (!altPressed))
{
// The character typed is just a letter.
PipeTextView.Buffer.Changed -= PipeTextBuffer_OnChanged;
string theLine = CurrentLine();
int lineCaretPos = CaretPos();
string prefix = theLine.Substring(0, lineCaretPos).TrimStart();
if (IsAlphabetic(prefix))
{
// The "prefix" is all alphabetic.
string suffix = MatchCommand(prefix);
int i = theLine.IndexOf(' ', lineCaretPos - 1);
if (i > -1)
{
// Found the space following the filter name.
int noOfChars = i - lineCaretPos + 1;
theLine = theLine.Remove(lineCaretPos - 1, noOfChars);
theLine = theLine.Insert(lineCaretPos - 1, suffix);
}
else
{
// No space was found.
theLine = theLine.Remove(lineCaretPos - 1);
theLine += suffix;
}
// Update the textview's text buffer:
TextIter begIter = PipeTextView.Buffer.GetIterAtMark(PipeTextView.Buffer.InsertMark);
TextIter endIter = PipeTextView.Buffer.GetIterAtMark(PipeTextView.Buffer.InsertMark);
begIter.BackwardChars(begIter.LineOffset);
endIter.BackwardCursorPosition();
endIter.ForwardToLineEnd();
PipeTextView.Buffer.Delete(ref begIter, ref endIter);
PipeTextView.Buffer.Insert(ref begIter, theLine);
if (suffix != string.Empty)
{
// Restore the caret's original position:
MoveCaret(lineCaretPos);
}
}
PipeTextView.Buffer.Changed += PipeTextBuffer_OnChanged;
}
}
UpdCursorLocation(PipeTextView.Buffer);
UpdateCmdSyntax();
UpdateControls();
}
