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https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-04-03 15:46:36 +08:00
整理代码
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@@ -5,11 +5,11 @@ using System.Text;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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public class SelectionService
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public class DiagramSelectionService
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{
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private IDiagramViewModel DiagramViewModel;
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public SelectionService(IDiagramViewModel diagramViewModel)
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public DiagramSelectionService(IDiagramViewModel diagramViewModel)
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{
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this.DiagramViewModel = diagramViewModel;
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}
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@@ -40,13 +40,13 @@ namespace AIStudio.Wpf.DiagramDesigner
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}
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}
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private SelectionService selectionService;
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public SelectionService SelectionService
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private DiagramSelectionService selectionService;
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public DiagramSelectionService SelectionService
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{
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get
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{
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if (selectionService == null)
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selectionService = new SelectionService(this);
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selectionService = new DiagramSelectionService(this);
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return selectionService;
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}
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@@ -1,179 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Reactive.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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/// <summary>
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/// Implementation of <see cref="INotifyPropertyChanged"/> to simplify models.
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/// </summary>
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public abstract class BindableBase : INotifyPropertyChanged
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{
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/// <summary>
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/// Occurs when a property value changes.
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/// </summary>
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public event PropertyChangedEventHandler PropertyChanged;
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private Dictionary<string, object> _oldDic = new Dictionary<string, object>();
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public void SetOldValue<T>(T value, string propertyName, string guid = null)
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{
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_oldDic[propertyName + guid ?? string.Empty] = value;
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}
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public T GetOldValue<T>(string propertyName, string guid = null)
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{
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if (_oldDic.ContainsKey(propertyName + guid ?? string.Empty))
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{
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var old = (T)_oldDic[propertyName + guid ?? string.Empty];
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return old;
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}
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else
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{
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return default(T);
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}
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}
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public void ClearOldValue<T>(string propertyName, string guid = null)
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{
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if (_oldDic.ContainsKey(propertyName + guid ?? string.Empty))
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{
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_oldDic.Remove(propertyName + guid ?? string.Empty);
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}
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}
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/// <summary>
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/// Checks if a property already matches a desired value. Sets the property and
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/// notifies listeners only when necessary.
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/// </summary>
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/// <typeparam name="T">Type of the property.</typeparam>
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/// <param name="storage">Reference to a property with both getter and setter.</param>
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/// <param name="value">Desired value for the property.</param>
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/// <param name="propertyName">Name of the property used to notify listeners. This
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/// value is optional and can be provided automatically when invoked from compilers that
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/// support CallerMemberName.</param>
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/// <returns>True if the value was changed, false if the existing value matched the
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/// desired value.</returns>
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protected virtual bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
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{
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if (EqualityComparer<T>.Default.Equals(storage, value))
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return false;
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if (propertyName == "IsSelected")
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{
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}
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else if (this.ContainsProperty("IsReadOnly"))
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{
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if (object.Equals(this.GetPropertyValue("IsReadOnly"), true))
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return false;
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}
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var old = storage;
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storage = value;
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RaisePropertyChanged(propertyName, old, value);
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return true;
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}
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/// <summary>
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/// Checks if a property already matches a desired value. Sets the property and
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/// notifies listeners only when necessary.
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/// </summary>
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/// <typeparam name="T">Type of the property.</typeparam>
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/// <param name="storage">Reference to a property with both getter and setter.</param>
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/// <param name="value">Desired value for the property.</param>
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/// <param name="propertyName">Name of the property used to notify listeners. This
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/// value is optional and can be provided automatically when invoked from compilers that
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/// support CallerMemberName.</param>
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/// <param name="onChanged">Action that is called after the property value has been changed.</param>
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/// <returns>True if the value was changed, false if the existing value matched the
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/// desired value.</returns>
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protected virtual bool SetProperty<T>(ref T storage, T value, Action onChanged, [CallerMemberName] string propertyName = null)
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{
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if (EqualityComparer<T>.Default.Equals(storage, value)) return false;
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if (propertyName == "IsSelected")
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{
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}
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else if (this.ContainsProperty("IsReadOnly"))
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{
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if (object.Equals(this.GetPropertyValue("IsReadOnly"), true))
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return false;
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}
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var old = storage;
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storage = value;
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onChanged?.Invoke();
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RaisePropertyChanged(propertyName, old, value);
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return true;
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}
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/// <summary>
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/// Raises this object's PropertyChanged event.
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/// </summary>
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/// <param name="propertyName">Name of the property used to notify listeners. This
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/// value is optional and can be provided automatically when invoked from compilers
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/// that support <see cref="CallerMemberNameAttribute"/>.</param>
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protected void RaisePropertyChanged([CallerMemberName] string propertyName = null)
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{
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OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
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}
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protected void RaisePropertyChanged([CallerMemberName] string propertyName = null, object oldvalue = null, object newvalue = null)
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{
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OnPropertyChanged(new ValuePropertyChangedEventArgs(propertyName, oldvalue, newvalue));
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}
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protected void RaisePropertyChanged(object sender, [CallerMemberName] string propertyName = null, object oldvalue = null, object newvalue = null)
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{
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PropertyChanged?.Invoke(sender, new ValuePropertyChangedEventArgs(propertyName, oldvalue, newvalue));
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}
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protected void RaisePropertyChanged(object sender, PropertyChangedEventArgs args)
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{
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PropertyChanged?.Invoke(sender, args);
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}
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/// <summary>
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/// Raises this object's PropertyChanged event.
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/// </summary>
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/// <param name="args">The PropertyChangedEventArgs</param>
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protected virtual void OnPropertyChanged(PropertyChangedEventArgs args)
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{
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PropertyChanged?.Invoke(this, args);
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}
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public IObservable<string> WhenPropertyChanged
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{
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get
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{
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return Observable
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.FromEventPattern<PropertyChangedEventHandler, PropertyChangedEventArgs>(
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h => this.PropertyChanged += h,
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h => this.PropertyChanged -= h)
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.Select(x => x.EventArgs.PropertyName);
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}
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}
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}
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public class ValuePropertyChangedEventArgs : PropertyChangedEventArgs
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{
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public ValuePropertyChangedEventArgs(string propertyName, object oldValue, object newValue) : base(propertyName)
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{
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OldValue = oldValue;
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NewValue = newValue;
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}
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public object OldValue { get; set; }
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public object NewValue { get; set; }
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}
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}
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@@ -28,7 +28,7 @@ namespace AIStudio.Wpf.DiagramDesigner
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{
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get;
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}
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SelectionService SelectionService
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DiagramSelectionService SelectionService
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{
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get;
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}
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@@ -1,66 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Input;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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public class SimpleCommand : ICommand
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{
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/// <summary>
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/// Gets or sets the Predicate to execute when the CanExecute of the command gets called
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/// </summary>
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public Predicate<object> CanExecuteDelegate { get; set; }
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/// <summary>
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/// Gets or sets the action to be called when the Execute method of the command gets called
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/// </summary>
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public Action<object> ExecuteDelegate { get; set; }
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public SimpleCommand(Predicate<object> canExecuteDelegate, Action<object> executeDelegate)
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{
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CanExecuteDelegate = canExecuteDelegate;
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ExecuteDelegate = executeDelegate;
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}
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public SimpleCommand(Action<object> executeDelegate)
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{
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ExecuteDelegate = executeDelegate;
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}
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#region ICommand Members
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/// <summary>
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/// Checks if the command Execute method can run
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/// </summary>
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/// <param name="parameter">THe command parameter to be passed</param>
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/// <returns>Returns true if the command can execute. By default true is returned so that if the user of SimpleCommand does not specify a CanExecuteCommand delegate the command still executes.</returns>
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public bool CanExecute(object parameter)
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{
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if (CanExecuteDelegate != null)
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return CanExecuteDelegate(parameter);
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return true;// if there is no can execute default to true
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}
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public event EventHandler CanExecuteChanged
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{
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add { CommandManager.RequerySuggested += value; }
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remove { CommandManager.RequerySuggested -= value; }
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}
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/// <summary>
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/// Executes the actual command
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/// </summary>
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/// <param name="parameter">THe command parameter to be passed</param>
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public void Execute(object parameter)
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{
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if (ExecuteDelegate != null)
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ExecuteDelegate(parameter);
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}
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#endregion
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}
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}
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