public void UndoLast()
{
if (undoactions.Count >= 1)
{
MindNodeAction action = undoactions.Last();
undoactions.Remove(action);
switch (action.name)
{
case "CreateNode":
if (action.involvedNodes.Count >= 1)
{
MindNode createdNode = action.involvedNodes.Pop();
redoactions.Add(new MindNodeAction(1, "DeleteNode", createdNode));
createdNode.DeleteNode();
}
break;
case "DeleteNode":
if (action.involvedNodes.Count >= 1)
{
MindNode deletednode = action.involvedNodes.Pop();
redoactions.Add(new MindNodeAction(0, "CreateNode", deletednode));
if (deletednode.parent != null)
{
deletednode.parent.AddChildNoStyle(deletednode, false);
}
// Refresh Pivot Representation after reinstating node
deletednode.UpdatePivots();
}
break;
case "MoveNodes":
if (action.involvedNodes.Count >= 1)
{
MindNodeAction newaction = new MindNodeAction(2, "MoveNodes");
foreach (MindNode movedNode in action.involvedNodes)
{
newaction.involvedNodes.Push(movedNode);
newaction.startpoint.Push(new CalcPoint(movedNode.xpos, movedNode.ypos));
if (action.startpoint.Count > 0)
{
CalcPoint oldPos = action.startpoint.Pop();
movedNode.SetPosition(oldPos.X, oldPos.Y, false);
}
// Refresh Pivot Representation after moving node
movedNode.UpdatePivots();
}
redoactions.Add(newaction);
}
break;
case "ConnectNodes":
if (action.involvedNodes.Count >= 2)
{
MindNodeAction newAction = new MindNodeAction(3, "DeleteConnections");
for (int i = 0; i < action.involvedNodes.Count / 2; i++)
{
MindNode rightnode = action.involvedNodes.Pop();
MindNode leftnode = action.involvedNodes.Pop();
newAction.involvedNodes.Push(leftnode);
newAction.involvedNodes.Push(rightnode);
leftnode.DeleteConnection(rightnode);
}
redoactions.Add(newAction);
}
break;
case "DeleteConnections":
if (action.involvedNodes.Count >= 2)
{
MindNodeAction newAction = new MindNodeAction(3, "ConnectNodes");
for (int i = 0; i < action.involvedNodes.Count / 2; i++)
{
MindNode rightnode = action.involvedNodes.Pop();
MindNode leftnode = action.involvedNodes.Pop();
newAction.involvedNodes.Push(leftnode);
newAction.involvedNodes.Push(rightnode);
leftnode.AddConnection(rightnode);
// Refresh Pivot Representation after reinstating connection
leftnode.UpdatePivots();
}
redoactions.Add(newAction);
}
break;
case "ChangeText":
if (action.involvedNodes.Count >= 1)
{
MindNodeAction newaction = new MindNodeAction(4, "ChangeText");
MindNode changedNode = action.involvedNodes.Pop();
newaction.text = changedNode.text;
newaction.involvedNodes.Push(changedNode);
changedNode.SetText(action.text);
redoactions.Add(newaction);
}
else if (action.involvedLabel != null)
{
MindNodeAction newaction = new MindNodeAction(4, "ChangeText");
NodeLabel changedLabel = action.involvedLabel;
newaction.text = changedLabel.GetText();
newaction.involvedLabel = changedLabel;
changedLabel.SetText(action.text);
redoactions.Add(newaction);
}
break;
case "Transform":
if (action.involvedNodes.Count >= 1)
{
MindNodeAction newaction = new MindNodeAction(5, "Transform");
MindNode changedNode = action.involvedNodes.Pop();
newaction.sourceSize.X = changedNode.width;
newaction.sourceSize.Y = changedNode.height;
newaction.startpoint.Push(new CalcPoint(changedNode.xpos, changedNode.ypos));
newaction.involvedNodes.Push(changedNode);
if (action.sourceSize.X != -1)
{
changedNode.width = action.sourceSize.X;
changedNode.SetScaled(false);
}
if (action.sourceSize.Y != -1)
{
changedNode.height = action.sourceSize.Y;
changedNode.SetScaled(false);
}
CalcPoint oldPos = action.startpoint.Pop();
if (oldPos != null)
{
changedNode.SetPosition(oldPos.X, oldPos.Y, false);
}
// Refresh Pivot Representation after resetting transformation
changedNode.UpdatePivots();
changedNode.updateRepresentation();
redoactions.Add(newaction);
}
break;
}
}
}
