checkboxcolumn.cs

SharpNuke源代码

using System;
using System.Collections;
using System.Drawing;
using System.Web.UI;
using System.Web.UI.WebControls;

//
// DotNetNuke -  http://www.dotnetnuke.com
// Copyright (c) 2002-2005
// by Shaun Walker ( [e-mail] ) of Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//

namespace DotNetNuke.Security.Permissions.Controls
{
	
	public delegate void CheckChangedEventHandler(int gridIndex, bool value);

	public class CheckBoxColumn : TemplateColumn
	{

		private CheckChangedEventHandler viewCheckedChangedEvent;
		private CheckChangedEventHandler editCheckedChangedEvent;
		//----------------------------------------------------------------------------
		// Internal storage of the CheckBoxTemplate that is to be used for the view state.
		//----------------------------------------------------------------------------
		private CheckBoxTemplate viewItem;
		
		//----------------------------------------------------------------------------
		// Internal storage of the CheckBoxTemplate that is to be used for the edit state.
		//----------------------------------------------------------------------------
		private CheckBoxTemplate editItem;
		
		//----------------------------------------------------------------------------
		// Initialise our CheckBoxColumn.
		//----------------------------------------------------------------------------
		public CheckBoxColumn() 
		{
			this.viewItem = new CheckBoxTemplate(true);
			this.ItemTemplate = this.viewItem;
			
			// let the edit check box be editable
			this.editItem = new CheckBoxTemplate(true);
			this.viewItem.BoxCheckedChanged += new CheckChangedEventHandler(OnEditCheckedChanged);
			this.EditItemTemplate = this.editItem;
			this.ItemStyle.HorizontalAlign = HorizontalAlign.Center;
		}
		
		//----------------------------------------------------------------------------
		// Initialise our CheckBoxColumn with an optional ImmediatePostback capability.
		// If true then each change of state of the CheckBox item
		// will cause an event to be fired immediately on the server.
		//----------------------------------------------------------------------------
		public CheckBoxColumn(bool immediatePostback, string trueValue) 
		{
			// set the view one as readonly
			this.viewItem = new CheckBoxTemplate(immediatePostback, trueValue);
			this.viewItem.BoxCheckedChanged += new CheckChangedEventHandler(OnViewCheckedChanged);
			this.ItemTemplate = this.viewItem;
			
			// let the edit check box be editable
			this.editItem = new CheckBoxTemplate(!immediatePostback, trueValue);
			this.editItem.BoxCheckedChanged += new CheckChangedEventHandler(OnEditCheckedChanged);
			this.EditItemTemplate = this.editItem;
			this.ItemStyle.HorizontalAlign = HorizontalAlign.Center;
			AutoPostBack = immediatePostback;
		}
		
		
		//----------------------------------------------------------------------------
		// If true then then each click on a CheckBox will cause an event to be fired on the server.
		//----------------------------------------------------------------------------
		public bool AutoPostBack
		{
			get { return this.viewItem.AutoPostBack; }
			set
			{
				this.viewItem.AutoPostBack = value;
				this.editItem.AutoPostBack = value;
			}
		}
				
		public event CheckChangedEventHandler ViewCheckedChanged
		{
			add { this.viewCheckedChangedEvent += value; }
			remove { this.viewCheckedChangedEvent -= value; }
		}
		
		public event CheckChangedEventHandler EditCheckedChanged
		{
			add { this.editCheckedChangedEvent += value; }
			remove { this.editCheckedChangedEvent -= value; }
		}
		
		public void OnEditCheckedChanged (int gridIndex, bool value)
		{
			if (this.editCheckedChangedEvent != null)
				this.editCheckedChangedEvent(gridIndex, value);
		}
		
		public void OnViewCheckedChanged (int gridIndex, bool value)
		{
			if (this.viewCheckedChangedEvent != null)
				this.viewCheckedChangedEvent(gridIndex, value);
		}
		
		//----------------------------------------------------------------------------
		// The DataField that we wish our control to bind to.
		//----------------------------------------------------------------------------
		public string DataField
		{
			get { return this.viewItem.DataField; }
			set 
			{ 
				this.viewItem.DataField = value; 
				this.editItem.DataField = value;
			}
		}
		
	}
	
	
}