aistudio-wpf-diagram/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/LockedViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;

namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
{
    class LockedViewModel : BaseViewModel
    {
        public LockedViewModel()
        {
            Title = "Locked models";
            Info = "All the nodes and links in this example are locked, they cannot be moved nor deleted." +
                    //"All the TOP ports are locked as well, so you can't create links from/to them, but you can from/to the others." +
                    "Newly created links aren't locked, so they can be deleted.";

            DiagramViewModel = new DiagramViewModel();
            DiagramViewModel.CellHorizontalAlignment = CellHorizontalAlignment.Center;
            DiagramViewModel.CellVerticalAlignment = CellVerticalAlignment.Center;
            DiagramViewModel.PageSizeType = PageSizeType.Custom;
            DiagramViewModel.PageSize = new Size(double.NaN, double.NaN);
            DiagramViewModel.ColorViewModel = new ColorViewModel();
            DiagramViewModel.ColorViewModel.FillColor.Color = System.Windows.Media.Colors.Orange;

            DefaultDesignerItemViewModel node1 = new DefaultDesignerItemViewModel(DiagramViewModel) { Left = 50, Top = 50, Text = "1" };
            //node1.LockObjectViewModel.LockObject.FirstOrDefault(p => p.LockFlag == LockFlag.All).IsChecked = true;//这个也可以
            node1.IsReadOnly = true;
            DiagramViewModel.DirectAddItemCommand.Execute(node1);

            DefaultDesignerItemViewModel node2 = new DefaultDesignerItemViewModel(DiagramViewModel) { Left = 300, Top = 300, Text = "2" };
            //node2.LockObjectViewModel.LockObject.FirstOrDefault(p => p.LockFlag == LockFlag.All).IsChecked = true;//这个也可以
            node2.IsReadOnly = true;
            DiagramViewModel.DirectAddItemCommand.Execute(node2);

            DefaultDesignerItemViewModel node3 = new DefaultDesignerItemViewModel(DiagramViewModel) { Left = 300, Top = 50, Text = "3" };
            //node3.LockObjectViewModel.LockObject.FirstOrDefault(p => p.LockFlag == LockFlag.All).IsChecked = true;//这个也可以
            node3.IsReadOnly = true;
            DiagramViewModel.DirectAddItemCommand.Execute(node3);

            ConnectionViewModel connector1 = new ConnectionViewModel(DiagramViewModel, node1.RightConnector, node2.LeftConnector, DrawMode.ConnectingLineSmooth, RouterMode.RouterNormal);
            //connector1.LockObjectViewModel.LockObject.FirstOrDefault(p => p.LockFlag == LockFlag.All).IsChecked = true;//这个也可以
            connector1.IsReadOnly = true;
            DiagramViewModel.DirectAddItemCommand.Execute(connector1);

            ConnectionViewModel connector2 = new ConnectionViewModel(DiagramViewModel, node2.RightConnector, node3.RightConnector, DrawMode.ConnectingLineStraight, RouterMode.RouterOrthogonal);
            // connector2.LockObjectViewModel.LockObject.FirstOrDefault(p => p.LockFlag == LockFlag.All).IsChecked = true;//这个也可以
            connector2.IsReadOnly = true;
            DiagramViewModel.DirectAddItemCommand.Execute(connector2);

            DiagramViewModel.ClearSelectedItemsCommand.Execute(null);
        }
    }
}