private void undoToolStripMenuItem_Click(object sender, EventArgs e)
{
if (undo.Count < 1)
{
return;
}
int nodeId = undo.Peek().Id;
while (undo.Count > 0 && nodeId == undo.Peek().Id)
{ // undo
Model.HistoryNode undoo = undo.Pop();
// save for redo
redo.Push(new Model.HistoryNode(undoo.Id, undoo.MapX, undoo.MapY, map[undoo.MapX, undoo.MapY]));
// render undo
map[undoo.MapX, undoo.MapY] = undoo.Value;
}
RenderMap();
redoToolStripMenuItem.Enabled = true;
if (undo.Count > 0)
{
undoToolStripMenuItem.Enabled = true;
}
else
{
undoToolStripMenuItem.Enabled = false;
}
}
private void redoToolStripMenuItem_Click(object sender, EventArgs e)
{
if (redo.Count < 1)
{
return;
}
int nodeId = redo.Peek().Id;
while (redo.Count > 0 && nodeId == redo.Peek().Id)
{ // redo
Model.HistoryNode redoo = redo.Pop();
// save current map for undo
undo.Push(new Model.HistoryNode(redoo.Id, redoo.MapX, redoo.MapY, map[redoo.MapX, redoo.MapY]));
// render redo
map[redoo.MapX, redoo.MapY] = redoo.Value;
}
RenderMap();
undoToolStripMenuItem.Enabled = true;
if (redo.Count > 0)
{
redoToolStripMenuItem.Enabled = true;
}
else
{
redoToolStripMenuItem.Enabled = false;
}
}