//
// The EditLoop: One loop for each key pressed!
//
private string EditLoop(IQueryCompiledError queryCompiledError)
{
while (true)
{
//
// Fill m_UndoRedoStates
//
m_UndoRedoStates.Append(m_CurrentState);
//
// Re-write the query each time a key is pressed
//
m_ConsoleWriter.Rewrite(m_CurrentState);
// Eventually show errors
if (queryCompiledError != null)
{
// Show errors once...
m_ConsoleWriter.ShowQueryCompiledErrors(m_CurrentState, queryCompiledError);
// ... and then set queryCompiledError to null to avoid showing them anymore
queryCompiledError = null;
}
//
// ReadKey!
//
var consoleKeyInfo = Console.ReadKey();
//
// Handle special console key
//
switch (consoleKeyInfo.Key)
{
case ConsoleKey.F5: // F5 --> Run the query!;
Console.CursorVisible = false;
m_ConsoleWriter.Rewrite(m_CurrentState); // <-- need to rewrite the query, else the char where the cursor was is hidden!
m_ConsoleWriter.SetCursorPosition(0, m_CurrentState.Lines.Count);
Console.CursorLeft = 0;
Console.CursorVisible = true;
m_AlreadyEditedQueries.AppendButDontClearNext(m_CurrentState.QueryString);
return(m_CurrentState.QueryString);
case ConsoleKey.Escape:
return(null);
case ConsoleKey.PageUp:
m_ConsoleWriter.ClearQueryEdit(m_CurrentState);
m_CurrentState = new State(m_AlreadyEditedQueries.GetPrevious(), 0, 0, Location.Null);
m_UndoRedoStates.Clear(m_CurrentState);
continue;
case ConsoleKey.PageDown:
m_ConsoleWriter.ClearQueryEdit(m_CurrentState);
m_CurrentState = new State(m_AlreadyEditedQueries.GetNext(), 0, 0, Location.Null);
m_UndoRedoStates.Clear(m_CurrentState);
continue;
}
//
// Handle the key inputed with the appropriate keyHandler
//
foreach (var keyHandler in m_KeyHandlers)
{
if (!keyHandler.IsHandlerFor(consoleKeyInfo))
{
continue;
}
m_CurrentState = keyHandler.Handle(consoleKeyInfo, m_CurrentState);
break;
}
continue;
}
}