添加项目文件。

Util.DiagramDesigner/ViewModels/AdditionViewModel/DiagramServicesProvider.cs

@@ -0,0 +1,182 @@
+using System;
+using System.ComponentModel;
+
+namespace Util.DiagramDesigner
+{
+    /// <summary>
+    /// Simple service interface
+    /// </summary>
+    public interface IDiagramServiceProvider : INotifyPropertyChanged
+    {
+        IColorViewModel ColorViewModel { get; }
+        IFontViewModel FontViewModel { get; }
+        IDrawModeViewModel DrawModeViewModel { get; }
+        IQuickThemeViewModel QuickThemeViewModel { get; }
+        ILockObjectViewModel LockObjectViewModel { get; }
+        SelectableDesignerItemViewModelBase SelectedItem { get; set; }
+    }
+
+
+    /// <summary>
+    /// Simple service locator
+    /// </summary>
+    public class DiagramServiceProvider : BindableBase, IDiagramServiceProvider
+    {
+        public DiagramServiceProvider()
+        {
+            ColorViewModel = new ColorViewModel();
+            FontViewModel = new FontViewModel();
+            LockObjectViewModel = new LockObjectViewModel();
+            _drawModeViewModel = new DrawModeViewModel();
+            _quickThemeViewModel = new QuickThemeViewModel();
+          
+            _drawModeViewModel.PropertyChanged += ViewModel_PropertyChanged;
+            _quickThemeViewModel.PropertyChanged += ViewModel_PropertyChanged;
+
+            SetOldValue<IColorViewModel>(ColorViewModel, nameof(ColorViewModel));
+            SetOldValue<IFontViewModel>(FontViewModel, nameof(FontViewModel));
+            SetOldValue<ILockObjectViewModel>(LockObjectViewModel, nameof(LockObjectViewModel));
+        }
+
+        private void ViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            RaisePropertyChanged(sender, e.PropertyName);
+        }
+
+        private IColorViewModel _colorViewModel;
+        public IColorViewModel ColorViewModel
+        {
+            get
+            {
+                return _colorViewModel;
+            }
+            set
+            {
+                if (_colorViewModel != null)
+                {
+                    _colorViewModel.PropertyChanged -= ViewModel_PropertyChanged;
+                }
+                SetProperty(ref _colorViewModel, value);
+                if (_colorViewModel != null)
+                {
+                    _colorViewModel.PropertyChanged += ViewModel_PropertyChanged;
+                }
+            }
+        }
+
+        private IFontViewModel _fontViewModel;
+        public IFontViewModel FontViewModel
+        {
+            get
+            {
+                return _fontViewModel;
+            }
+            set
+            {
+                if (_fontViewModel != null)
+                {
+                    _fontViewModel.PropertyChanged -= ViewModel_PropertyChanged;
+                }
+                SetProperty(ref _fontViewModel, value);
+                if (_fontViewModel != null)
+                {
+                    _fontViewModel.PropertyChanged += ViewModel_PropertyChanged;
+                }
+            }
+        }
+
+        private DrawModeViewModel _drawModeViewModel;
+        public IDrawModeViewModel DrawModeViewModel
+        {
+            get { return _drawModeViewModel; }
+        }
+
+        private QuickThemeViewModel _quickThemeViewModel;
+        public IQuickThemeViewModel QuickThemeViewModel
+        {
+            get { return _quickThemeViewModel; }
+        }
+
+        private ILockObjectViewModel _lockObjectViewModel;
+        public ILockObjectViewModel LockObjectViewModel
+        {
+            get
+            {
+                return _lockObjectViewModel;
+            }
+            set
+            {
+                if (_lockObjectViewModel != null)
+                {
+                    _lockObjectViewModel.PropertyChanged -= ViewModel_PropertyChanged;
+                }
+                SetProperty(ref _lockObjectViewModel, value);
+                if (_lockObjectViewModel != null)
+                {
+                    _lockObjectViewModel.PropertyChanged += ViewModel_PropertyChanged;
+                }
+            }
+        }
+
+        private SelectableDesignerItemViewModelBase _selectedItem;
+        public SelectableDesignerItemViewModelBase SelectedItem
+        {
+            get
+            {
+                return _selectedItem;
+            }
+            set
+            {
+                if (_selectedItem != null)
+                {
+                    _selectedItem.PropertyChanged -= ViewModel_PropertyChanged;
+                }
+                if (SetProperty(ref _selectedItem, value))
+                {
+                    if (_selectedItem == null)
+                    {
+                        ColorViewModel = GetOldValue<ColorViewModel>(nameof(ColorViewModel));
+                        FontViewModel = GetOldValue<FontViewModel>(nameof(FontViewModel));
+                        LockObjectViewModel = GetOldValue<LockObjectViewModel>(nameof(LockObjectViewModel));
+                    }
+                    else
+                    {
+                        ColorViewModel = _selectedItem.ColorViewModel;
+                        FontViewModel = _selectedItem.FontViewModel;
+                        LockObjectViewModel = _selectedItem.LockObjectViewModel;
+                    }
+                }
+                if (_selectedItem != null)
+                {
+                    _selectedItem.PropertyChanged += ViewModel_PropertyChanged;
+                }
+            }
+        }
+    }
+
+
+
+    /// <summary>
+    /// Simple service locator helper
+    /// </summary>
+    public class DiagramServicesProvider
+    {
+        private static Lazy<DiagramServicesProvider> instance = new Lazy<DiagramServicesProvider>(() => new DiagramServicesProvider());
+        private IDiagramServiceProvider serviceProvider = new DiagramServiceProvider();
+
+        public void SetNewServiceProvider(IDiagramServiceProvider provider)
+        {
+            serviceProvider = provider;
+        }
+
+        public IDiagramServiceProvider Provider
+        {
+            get { return serviceProvider; }
+        }
+
+        public static DiagramServicesProvider Instance
+        {
+            get { return instance.Value; }
+        }
+    }
+}