Source/AdvTree/Design/ElementStyleTypeEditor.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.ComponentModel;
using System.Drawing.Design;
using System.Windows.Forms.Design;
using System.Windows.Forms;
using System.ComponentModel.Design;
using DevComponents.DotNetBar;

namespace DevComponents.AdvTree.Design
{
	/// <summary>
	/// Represents type editor for ElementStyle used for Windows Forms design-time support.
	/// </summary>
	public class ElementStyleTypeEditor:System.Drawing.Design.UITypeEditor 
	{
		#region Private Variables
		private IWindowsFormsEditorService m_EditorService = null;
		private const string OPTION_CREATE="Create style";
		private const string OPTION_REMOVE="Delete selected style";
		private const string OPTION_STYLES="Styles.";
		#endregion

		#region Internal Implementation
		public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value) 
		{
			if (context != null
				&& context.Instance != null
				&& provider != null) 
			{				
				ElementStyle es=value as ElementStyle;
				
				m_EditorService = provider.GetService(typeof(IWindowsFormsEditorService)) as IWindowsFormsEditorService;
								
				if(m_EditorService!=null)
				{
					AdvTree tree = null;
					if(context.Instance is AdvTree)
						tree=context.Instance as AdvTree;
					else if(context.Instance is Node)
						tree=((Node)context.Instance).TreeControl;
					else if(context.Instance is Cell)
						tree=((Cell)context.Instance).TreeControl;
					
					ListBox lb=new ListBox();
					
					if(es==null)
						lb.Items.Add(OPTION_CREATE);
					else
						lb.Items.Add(OPTION_REMOVE);
					
					if(tree!=null)
					{
						foreach(ElementStyle style in tree.Styles)
							lb.Items.Add(style);
					}
					
					string[] styles = Enum.GetNames(typeof (ePredefinedElementStyle));
					foreach(string s in styles)
						lb.Items.Add(OPTION_STYLES + s);