menucommandcollection.cs

c#编写的仿OUTLOOK工具条的Winform菜单

using System;
using System.Drawing;
using System.Windows.Forms;
using UtilityLibrary.Menus;

namespace UtilityLibrary.Collections
{
	public class MenuCommandCollection : CollectionWithEvents
	{
		// Instance fields
		protected string _extraText;
		protected Font _extraFont;
		protected Color _extraTextColor;
		protected Brush _extraTextBrush;
		protected Color _extraBackColor;
		protected Brush _extraBackBrush;

		public MenuCommandCollection()
		{
			// Define defaults for internal state
			_extraText = "";
			_extraFont = SystemInformation.MenuFont;
			_extraTextColor = SystemColors.ActiveCaptionText;
			_extraTextBrush = null;
			_extraBackColor = SystemColors.ActiveCaption;
			_extraBackBrush = null;
		}

		public MenuCommand Add(MenuCommand value)
		{
			// Use base class to process actual collection operation
			base.List.Add(value as object);

			return value;
		}

		public void AddRange(MenuCommand[] values)
		{
			// Use existing method to add each array entry
			foreach(MenuCommand page in values)
				Add(page);
		}

		public void Remove(MenuCommand value)
		{
			// Use base class to process actual collection operation
			base.List.Remove(value as object);
		}

		public void Insert(int index, MenuCommand value)
		{
			// Use base class to process actual collection operation
			base.List.Insert(index, value as object);
		}

		public bool Contains(MenuCommand value)
		{
			// Use base class to process actual collection operation
			return base.List.Contains(value as object);
		}

		public MenuCommand this[int index]
		{
			// Use base class to process actual collection operation
			get { return (base.List[index] as MenuCommand); }
		}

		public MenuCommand this[string text]
		{
			get 
			{
				// Search for a MenuCommand with a matching title
				foreach(MenuCommand mc in base.List)
					if (mc.Text == text)
						return mc;

				return null;
			}
		}

		public int IndexOf(MenuCommand value)
		{
			// Find the 0 based index of the requested entry
			return base.List.IndexOf(value);
		}

		public bool VisibleItems()
		{
			foreach(MenuCommand mc in base.List)
			{
				// Is the item visible?
				if (mc.Visible)
				{
					// And its not a separator...
					if (mc.Text != "-")
					{
						// Then should return 'true' except when we are a sub menu item ourself
						// in which case there might not be any visible children which means that
						// this item would not be visible either.
						if ((mc.MenuCommands.Count > 0) && (!mc.MenuCommands.VisibleItems()))
							continue;

						return true;
					}
				}
			}

			return false;
		}

		public string ExtraText
		{
			get { return _extraText; }
			set { _extraText = value; }
		}

		public Font ExtraFont
		{
			get { return _extraFont; }
			set { _extraFont = value; }
		}

		public Color ExtraTextColor
		{
			get { return _extraTextColor; }
			set { _extraTextColor = value; }
		}

		public Brush ExtraTextBrush
		{
			get { return _extraTextBrush; }
			set { _extraTextBrush = value; }
		}

		public Color ExtraBackColor
		{
			get { return _extraBackColor; }
			set { _extraBackColor = value; }
		}

		public Brush ExtraBackBrush
		{
			get { return _extraBackBrush; }
			set { _extraBackBrush = value; }
		}
	}
}