92 lines
3.8 KiB
C#
92 lines
3.8 KiB
C#
using System;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Windows.Forms;
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namespace CC_Functions.W32.Forms
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{
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public delegate void SetPropertyDelegate<TCtl, TProp>(TCtl control, Expression<Func<TCtl, TProp>> propexpr,
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TProp value) where TCtl : Control;
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public delegate TProp GetPropertyDelegate<TCtl, TProp>(TCtl control, Expression<Func<TProp>> propexpr)
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where TCtl : Control;
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public delegate void InvokeActionDelegate<TCtl>(TCtl control, Delegate dlg, params object[] args)
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where TCtl : Control;
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public delegate TResult InvokeFuncDelegate<TCtl, TResult>(TCtl control, Delegate dlg, params object[] args)
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where TCtl : Control;
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public static class Extensions
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{
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public static void SetProperty<TCtl, TProp>(this TCtl control, Expression<Func<TCtl, TProp>> propexpr,
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TProp value) where TCtl : Control
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{
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if (control == null)
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throw new ArgumentNullException(nameof(control));
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if (propexpr == null)
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throw new ArgumentNullException(nameof(propexpr));
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if (control.InvokeRequired)
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{
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control.Invoke(new SetPropertyDelegate<TCtl, TProp>(SetProperty), control, propexpr, value);
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return;
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}
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MemberExpression propexprm = propexpr.Body as MemberExpression;
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if (propexprm == null)
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throw new ArgumentException("Invalid member expression.", nameof(propexpr));
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PropertyInfo prop = propexprm.Member as PropertyInfo;
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if (prop == null)
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throw new ArgumentException("Invalid property supplied.", nameof(propexpr));
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prop.SetValue(control, value);
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}
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public static TProp GetProperty<TCtl, TProp>(this TCtl control, Expression<Func<TProp>> propexpr)
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where TCtl : Control
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{
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if (control == null)
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throw new ArgumentNullException(nameof(control));
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if (propexpr == null)
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throw new ArgumentNullException(nameof(propexpr));
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if (control.InvokeRequired)
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return (TProp) control.Invoke(new GetPropertyDelegate<TCtl, TProp>(GetProperty), control, propexpr);
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MemberExpression propexprm = propexpr.Body as MemberExpression;
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if (propexprm == null)
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throw new ArgumentException("Invalid member expression.", nameof(propexpr));
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PropertyInfo prop = propexprm.Member as PropertyInfo;
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if (prop == null)
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throw new ArgumentException("Invalid property supplied.", nameof(propexpr));
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return (TProp) prop.GetValue(control);
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}
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public static void InvokeAction<TCtl>(this TCtl control, Delegate dlg, params object[] args)
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where TCtl : Control
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{
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if (control == null)
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throw new ArgumentNullException(nameof(control));
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if (dlg == null)
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throw new ArgumentNullException(nameof(dlg));
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if (control.InvokeRequired)
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{
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control.Invoke(new InvokeActionDelegate<TCtl>(InvokeAction), control, dlg, args);
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return;
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}
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dlg.DynamicInvoke(args);
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}
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public static TResult InvokeFunc<TCtl, TResult>(this TCtl control, Delegate dlg, params object[] args)
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where TCtl : Control
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{
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if (control == null)
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throw new ArgumentNullException(nameof(control));
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if (dlg == null)
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throw new ArgumentNullException(nameof(dlg));
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return control.InvokeRequired
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? (TResult) control.Invoke(new InvokeFuncDelegate<TCtl, TResult>(InvokeFunc<TCtl, TResult>), control,
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dlg, args)
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: (TResult) dlg.DynamicInvoke(args);
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}
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}
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} |