protected override void DoUndo()
{
if (LayerNode != null)
{
Map.EditorLayer layer = LayerNode.Tag as Map.EditorLayer;
LayerNode.Remove();
layer.Remove();
}
}
private void tsmiDeleteLayer_Click(object sender, EventArgs e)
{
TreeNode node = CurrentLayerNode;
if (node == null)
{
tsmiDeleteLayer.Enabled = false;
return;
}
List <TreeNode> valueNodes = new List <TreeNode>();
TreeViewUtil.EnumerateNodes(node, (_node) => {
if (_node.Tag is Entity)
{
valueNodes.Add(_node);
}
return(true);
});
if (valueNodes.Count > 0)
{
string infoMessage = string.Format("该Layer下有{0}个节点, 删除该Layer会将这些节点放在根节点下。是否继续？", valueNodes.Count);
if (MessageBox.Show(infoMessage, "询问", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
{
return;
}
}
Map.EditorLayer layer = node.Tag as Map.EditorLayer;
if (Map.Instance != null && layer == Map.Instance.RootEditorLayer)
{
tsmiDeleteLayer.Enabled = false;
return;
}
if (layer.Remove())
{
node.Tag = null;
if (node.Parent != null)
{
treeViewEntities.SelectedNode = node.Parent;
}
node.Remove();
UpdateData();
MapWorld.Instance.Modified = true;
}
}
