134 lines
3.7 KiB
C#
134 lines
3.7 KiB
C#
using System;
|
|
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using System.Diagnostics.Contracts;
|
|
using System.Linq;
|
|
using System.Reflection;
|
|
using System.Windows.Forms;
|
|
|
|
namespace SystemX.Net.Platform.Common.ExtensionMethods
|
|
{
|
|
public static class EmGeneral
|
|
{
|
|
/// <summary>Indicates whether the specified array is null or has a length of zero.</summary>
|
|
/// <param name="array">The array to test.</param>
|
|
/// <returns>true if the array parameter is null or has a length of zero; otherwise, false.</returns>
|
|
[Pure]
|
|
public static bool IsNullOrEmpty(this Array array)
|
|
{
|
|
return (array == null || array.Length == 0);
|
|
}
|
|
|
|
|
|
[Pure]
|
|
public static bool IsNullOrEmpty(this IEnumerable enumerable)
|
|
{
|
|
return (enumerable == null || enumerable.Cast<object>().Count() == 0);
|
|
}
|
|
|
|
[Pure]
|
|
public static bool NonNullAny<TSource>(this IEnumerable<TSource> source)
|
|
{
|
|
if (source == null)
|
|
return false;
|
|
return source.Any();
|
|
}
|
|
|
|
[Pure]
|
|
public static bool NonNullAny<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate)
|
|
{
|
|
if (source == null)
|
|
return false;
|
|
return source.Any(predicate);
|
|
}
|
|
|
|
[Pure]
|
|
public static int Clamp(this int val, int min, int max)
|
|
{
|
|
return val > max ? max : val < min ? min : val;
|
|
}
|
|
|
|
public static double Clamp(this double val, double min, double max)
|
|
{
|
|
return val > max ? max : val < min ? min : val;
|
|
}
|
|
|
|
[Pure]
|
|
public static bool XOR(this bool val1, bool val2)
|
|
{
|
|
return (val1 && !val2) || (!val1 && val2);
|
|
}
|
|
|
|
[Pure]
|
|
public static bool XOR(this object obj1, object obj2)
|
|
{
|
|
return (obj1 != null && obj2 == null) || (obj1 == null && obj2 != null);
|
|
}
|
|
|
|
[Pure]
|
|
public static bool Toggle(this bool fact, bool toggle)
|
|
{
|
|
return toggle ? ! fact : fact;
|
|
}
|
|
|
|
[Pure]
|
|
public static string NonNullEmptySelector(this string str1, string str2)
|
|
{
|
|
return String.IsNullOrEmpty(str1) ? str2 : str1;
|
|
}
|
|
|
|
|
|
[Pure]
|
|
public static bool NonNullEqual(this string str1, string str2)
|
|
{
|
|
return !String.IsNullOrEmpty(str1) && !String.IsNullOrEmpty(str2) && str1 == str2;
|
|
}
|
|
|
|
[Pure]
|
|
public static bool NullableEqual(this string str1, string str2)
|
|
{
|
|
return (str1.IsNullOrEmpty() && str2.IsNullOrEmpty()) || NonNullEqual(str1, str2);
|
|
}
|
|
|
|
|
|
|
|
public static bool HasTrueValue(this Nullable<bool> nullable)
|
|
{
|
|
return nullable.HasValue && nullable.Value;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
/// http://stackoverflow.com/questions/12447156/how-can-i-set-the-column-width-of-a-property-grid
|
|
/// </summary>
|
|
public static class PropertyGridColumnWidthSetter
|
|
{
|
|
public static void SetLabelColumnWidth(this PropertyGrid grid, int width)
|
|
{
|
|
if (grid == null)
|
|
return;
|
|
|
|
FieldInfo fi = grid.GetType().GetField("gridView", BindingFlags.Instance | BindingFlags.NonPublic);
|
|
if (fi == null)
|
|
return;
|
|
|
|
Control view = fi.GetValue(grid) as Control;
|
|
if (view == null)
|
|
return;
|
|
|
|
MethodInfo mi = view.GetType().GetMethod("MoveSplitterTo", BindingFlags.Instance | BindingFlags.NonPublic);
|
|
if (mi == null)
|
|
return;
|
|
mi.Invoke(view, new object[] {width});
|
|
}
|
|
}
|
|
}
|