public void executeUndo() //execute the command on the top of the undo stack
{
redoMessage = getUndoMessage(); //get the redo message
ICmd cmd = undo.Pop(); //pop the command to undo from the undo stack
redo.Push(cmd.Exec()); //execute the undo command and add it to the redo stack
}
private void redoCellTextChangeToolStripMenuItem_Click(object sender, EventArgs e)
{
ICmd temp = mySpreadsheet.popRedo();
mySpreadsheet.AddUndo(temp.Exec());
undoCellTextChangeToolStripMenuItem.Enabled = true;
}
//description: execute command on top of redo stack and push the inverse command onto the undo stack
//parameter:
//return:
public void Redo()
{
ICmd redo = StackRedo.Pop();
StackUndo.Push(redo.Exec());
}
//description: execute command on top of undo stack and push the inverse command onto the redo stack
//parameter:
//return:
public void Undo()
{
ICmd undo = StackUndo.Pop();
StackRedo.Push(undo.Exec());
}
public void executeRedo() //execute the command on the top of the redo stack
{
ICmd cmd = redo.Pop(); //pop the command to redo from the redo stack
undo.Push(cmd.Exec()); //execute the redo command and add it to the undo stack
}
