public void Clear()
{
if (Count > 0)
{
_stack.Clear();
HasItemsChanged?.Invoke(this, new EventArgs());
}
}
public void Push(T item)
{
_stack.Push(item);
if (_stack.Count == 1)
{
HasItemsChanged?.Invoke(this, new EventArgs());
}
}
public void Clear()
{
if (Count > 0)
{
items = new T[items.Length];
top = 0;
Count = 0;
HasItemsChanged?.Invoke(this, new EventArgs());
}
}
public T Pop()
{
var item = _stack.Pop();
if (_stack.Count == 0)
{
HasItemsChanged?.Invoke(this, new EventArgs());
}
return(item);
}
public T Pop()
{
top = (items.Length + top - 1) % items.Length;
Count--;
if (Count == 0)
{
HasItemsChanged?.Invoke(this, new EventArgs());
}
return(items[top]);
}
public void Cut(IEnumerable <IEntityViewModel> entities)
{
clearClipboard();
_isCutOperation = true;
foreach (var entity in entities)
{
_clipboardData.Add(entity);
entity.IsCut = true;
}
HasItemsChanged?.Invoke(this, EventArgs.Empty);
}
public void Push(T item)
{
items[top] = item;
top = (top + 1) % items.Length;
if (Count < items.Length)
{
Count++;
}
if (Count == 1)
{
HasItemsChanged?.Invoke(this, new EventArgs());
}
}
/// <summary>
/// Called when the parent item's state is updated in order to propagate those state changes
/// across relations to any materialized items, recursively.
/// </summary>
public void OnStateUpdated()
{
if (_isMaterialized)
{
int beforeCount = 0;
int afterCount = 0;
foreach (AggregateContainsRelationCollectionSpan span in _spans)
{
beforeCount += span.Items?.Count ?? 0;
span.BaseIndex = afterCount;
span.Relation.UpdateContainsCollection(parent: _item, span);
afterCount += span.Items?.Count ?? 0;
}
if ((beforeCount == 0) != (afterCount == 0))
{
HasItemsChanged?.Invoke(this, EventArgs.Empty);
}
}
}
public void Paste(IDirectoryViewModel directory)
{
var entities = _clipboardData.ToList();
var isCutOperation = _isCutOperation;
if (_isCutOperation)
{
clearClipboard();//allow continue copying as many times as user wants
}
_isCutOperation = false;
HasItemsChanged?.Invoke(this, EventArgs.Empty);
try
{
foreach (var entityInfo in entities)
{
performOperation(entityInfo, directory, isCutOperation);
}
}
catch (Exception e)
{
_windowsManager.ReportError("Paste error", e);
}
}
protected void InvokeHasItemsChanged()
{
HasItemsChanged?.Invoke(this, new EventArgs());
}
public void Copy(IEnumerable <IEntityViewModel> entities)
{
clearClipboard();
_clipboardData.AddRange(entities);
HasItemsChanged?.Invoke(this, EventArgs.Empty);
}
public void Dispose()
{
clearClipboard();
HasItemsChanged?.Invoke(this, EventArgs.Empty);
}