public void AddCommandToHistory(DrawTools.Command.Command command)
{
this.TrimHistoryList();
historyList.Add(command);
nextUndo++;
}
/// <summary>
/// Add new command to history.
/// Called by client after executing some action.
/// </summary>
/// <param name="command"></param>
public void AddCommandToHistory(DrawTools.Command.Command command)
{
// Purge history list
this.TrimHistoryList();
// Add command and increment undo counter
historyList.Add(command);
nextUndo++;
}
public void Undo()
{
if (!CanUndo)
{
return;
}
DrawTools.Command.Command command = historyList[nextUndo];
command.Undo();
nextUndo--;
}
public void Redo()
{
if (!CanRedo)
{
return;
}
int itemToRedo = nextUndo + 1;
DrawTools.Command.Command command = historyList[itemToRedo];
command.Redo();
nextUndo++;
}
/// <summary>
/// Undo
/// </summary>
public void Undo()
{
if (!CanUndo)
{
return;
}
// Get the Command object to be undone
DrawTools.Command.Command command = historyList[nextUndo];
// Execute the Command object's undo method
command.Undo();
// Move the pointer up one item
nextUndo--;
}
/// <summary>
/// Redo
/// </summary>
public void Redo()
{
if (!CanRedo)
{
return;
}
// Get the Command object to redo
int itemToRedo = nextUndo + 1;
DrawTools.Command.Command command = historyList[itemToRedo];
// Execute the Command object
command.Redo();
// Move the undo pointer down one item
nextUndo++;
}
