public void ReturnsFalseForBatchWithMultipleActions()
{
var model1 = new Mocks.MockModel();
var model2 = new Mocks.MockModel();
var batch = new Batch();
batch.AddAction(new PropertyChangeUndo(model1, "Value", model1.Value));
batch.AddAction(new PropertyChangeUndo(model2, "Value", model2.Value));
Assert.IsFalse(batch.IsEmptyBatch);
}
/// <summary>
/// Adds a new undo operation to the stack.
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="noInsertIfExecutingOperation">Do not insert record if currently running undo/redo.</param>
/// <returns><c>true</c> if undo operation was added to stack; otherwise <c>false</c>.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="operation"/> is <c>null</c>.</exception>
public bool Add(IMementoSupport operation, bool noInsertIfExecutingOperation = true)
{
Argument.IsNotNull("operation", operation);
if (!IsEnabled)
{
return(false);
}
if (noInsertIfExecutingOperation && _isUndoingOperation)
{
return(false);
}
lock (_lock)
{
if (_currentBatch != null)
{
_currentBatch.AddAction(operation);
}
else
{
var batch = new Batch();
batch.AddAction(operation);
Add(batch);
}
}
return(true);
}
public void ReturnsFalseForBatchWithOneAction()
{
var model = new Mocks.MockModel();
var batch = new Batch();
batch.AddAction(new PropertyChangeUndo(model, "Value", model.Value));
Assert.IsFalse(batch.IsEmptyBatch);
}
public void ReturnsOneForBatchWithOneAction()
{
var model = new Mocks.MockModel();
var batch = new Batch();
batch.AddAction(new PropertyChangeUndo(model, "Value", model.Value));
Assert.AreEqual(1, batch.ActionCount);
}
public void IsTrueWhenAtLeastOneActionCanRedo()
{
var model1 = new Mocks.MockModel();
var model2 = new Mocks.MockModel();
var batch = new Batch();
batch.AddAction(new PropertyChangeUndo(model1, "Value", model1.Value));
batch.AddAction(new PropertyChangeUndo(model2, "Value", model2.Value));
Assert.IsTrue(batch.CanRedo);
}
public void IsFalseWhenNoActionsCanRedo()
{
var model1 = new Mocks.MockModel();
var batch = new Batch();
batch.AddAction(new ActionUndo(model1, () => model1.Value = "Value"));
Assert.IsFalse(batch.CanRedo);
}
/// <summary>
/// Adds a new undo operation to the stack.
/// </summary>
/// <param name="operation">The operation.</param>
/// <param name="noInsertIfExecutingOperation">Do not insert record if currently running undo/redo.</param>
/// <returns><c>true</c> if undo operation was added to stack; otherwise <c>false</c>.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="operation"/> is <c>null</c>.</exception>
public bool Add(IMementoSupport operation, bool noInsertIfExecutingOperation = true)
{
Argument.IsNotNull("operation", operation);
if (!IsEnabled)
{
return false;
}
if (noInsertIfExecutingOperation && _isUndoingOperation)
{
return false;
}
lock (_lock)
{
if (_currentBatch != null)
{
_currentBatch.AddAction(operation);
}
else
{
var batch = new Batch();
batch.AddAction(operation);
Add(batch);
}
}
return true;
}
