public void TestEditingStackOperations()
{
var commands = new XTMFCommand[20];
for (int i = 0; i < commands.Length; i++)
{
commands[i] = new TestCommand();
}
EditingStack stack = new EditingStack(10);
Assert.AreEqual(0, stack.Count, "The stack's count is incorrect!");
// fill the stack
for (int i = 0; i < 10; i++)
{
stack.Add(commands[i]);
Assert.AreEqual(i + 1, stack.Count, "The stack's count is incorrect!");
}
// over fill the stack
for (int i = 10; i < 20; i++)
{
stack.Add(commands[i]);
Assert.AreEqual(10, stack.Count, "The stack's count is incorrect!");
}
// Make sure the first don't exist anymore
for (int i = 0; i < 10; i++)
{
Assert.AreEqual(false, stack.Contains(commands[i]), "The stack retained a command it should have lost!");
}
// Make sure the newer ones still exist
for (int i = 10; i < 20; i++)
{
Assert.AreEqual(true, stack.Contains(commands[i]), "The stack lost a command it should have retained!");
}
XTMFCommand command;
for (int i = 19; i >= 10; i--)
{
if (stack.TryPop(out command))
{
Assert.AreEqual(commands[i], command, "While popping we popped an unexpected command!");
}
else
{
Assert.Fail("A pop failed that should have succeeded!");
}
}
}
public void TestEditingStackOperations()
{
var commands = new XTMFCommand[20];
for ( int i = 0; i < commands.Length; i++ )
{
commands[i] = new TestCommand();
}
EditingStack stack = new EditingStack( 10 );
Assert.AreEqual( 0, stack.Count, "The stack's count is incorrect!" );
// fill the stack
for ( int i = 0; i < 10; i++ )
{
stack.Add( commands[i] );
Assert.AreEqual( i + 1, stack.Count, "The stack's count is incorrect!" );
}
// over fill the stack
for ( int i = 10; i < 20; i++ )
{
stack.Add( commands[i] );
Assert.AreEqual( 10, stack.Count, "The stack's count is incorrect!" );
}
// Make sure the first don't exist anymore
for ( int i = 0; i < 10; i++ )
{
Assert.AreEqual( false, stack.Contains( commands[i] ), "The stack retained a command it should have lost!" );
}
// Make sure the newer ones still exist
for ( int i = 10; i < 20; i++ )
{
Assert.AreEqual( true, stack.Contains( commands[i] ), "The stack lost a command it should have retained!" );
}
XTMFCommand command;
for ( int i = 19; i >= 10; i-- )
{
if ( stack.TryPop( out command ) )
{
Assert.AreEqual( commands[i], command, "While popping we popped an unexpected command!" );
}
else
{
Assert.Fail( "A pop failed that should have succeeded!" );
}
}
}
/// <summary>
/// Redo the last undone command
/// </summary>
/// <param name="error">The reason why it failed</param>
public bool Redo(ref string error)
{
lock (SessionLock)
{
XTMFCommand command;
if (RedoStack.TryPop(out command))
{
if (command != null)
{
if (command.Redo(ref error))
{
HasChanged = true;
UndoStack.Add(command);
return(true);
}
return(false);
}
}
error = "There was nothing to redo.";
return(false);
}
}
