//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace CommunityServer.Controls
{
    /// <summary>
    /// Extends IText interface by adding a click event
    /// </summary>
    public interface IButton : IText
	{
        event EventHandler Click;
        event CommandEventHandler Command;
        AttributeCollection Attributes { get; }
        string CommandArgument { get;set;}
        string CommandName {get;set;}
		bool CausesValidation {get;set;}
	}
    
    /// <summary>
    /// CS implementations if IButton
    /// </summary>
    public class CSButton : Button, IButton
    {
        public Control Control
        {
            get {return this;}
        }
    }

    /// <summary>
    /// CS implementations if IButton
    /// </summary>
    public class CSLinkButton : LinkButton, IButton
    {
            public Control Control
             {
                 get {return this;}
             }
    }

    /// <summary>
    /// Manager class for creating instance of IButton
    /// </summary>
    public class ButtonManager
    {
        public static IButton CreateButton(Button button)
        {
            if(button == null)
                throw new ArgumentNullException("button", "The button parameter can not be null");

            return new ButtonWrapper(button);
        }

        public static IButton CreateLinkButton(LinkButton button)
        {
            
            if(button == null)
                throw new ArgumentNullException("button", "The button parameter can not be null");

            return new LinkButtonWrapper(button);
        }

        /// <summary>
        /// Attempts to create an IButton from a Generic control reference. 
        /// </summary>
        /// <param name="cntrl">Needs to implemet IButton or derrive from Button or LinkButton</param>
        /// <returns>An instance of IButton (could be ButtonWrapper or LinkButtonWrapper)</returns>
        public static IButton Create(Control cntrl)
        {
            if(cntrl == null)
                return null;

            IButton ib = cntrl as IButton;
            
            if(ib == null)
            {
                if(cntrl is Button)
                    ib = CreateButton(cntrl as Button);
                else if(cntrl is LinkButton)
                    ib = CreateLinkButton(cntrl as LinkButton);
            }
            
            return ib;
        }

    }

    #region Button Wrapper
    /// <summary>
    /// Wrapper class for the Type Button. This allows CS to work with "regular" Button controls (or any control
    /// which derrives from Button)
    /// </summary>
    public class ButtonWrapper : IButton
    {
  
        internal ButtonWrapper(Button button)
        {
            _button = button;
        }

        #region IButton Members

        public event System.EventHandler Click
        {
            add { _button.Click += value; }
            remove { _button.Click -= value;}
        }

        public event CommandEventHandler Command
        {
            add { _button.Command += value; }
            remove { _button.Command -= value;}
        }

		public bool CausesValidation
		{
			get { return _button.CausesValidation; }
			set { _button.CausesValidation = value; }
		}

        #endregion

        #region IText Members
        private Button _button = null;
        public Control Control
        {
            get {return _button;}
        }

        public bool Visible
        {
            get{return _button.Visible;}
            set{_button.Visible = value;}
        }
        
        public string Text
        {
            get{ return _button.Text;}
            set{_button.Text = value;}
        }

   
        public AttributeCollection Attributes
        {   
            get{ return _button.Attributes;}
        }

        public string CommandArgument
        {
            get { return _button.CommandArgument; }
            set { _button.CommandArgument = value; }
        }

        public string CommandName
        {
            get { return _button.CommandName; }
            set { _button.CommandName = value; }
        }

        #endregion
    }


    #endregion

    #region LinkButton Wrapper
    /// <summary>
    /// Wrapper class for the Type LinkButton. This allows CS to work with "regular" LinkButton controls.
    /// </summary>
    public class LinkButtonWrapper : IButton
    {
  
        internal LinkButtonWrapper(LinkButton button)
        {
            _button = button;
        }

        #region IButton Members

        public event System.EventHandler Click
        {
            add { _button.Click += value; }
            remove { _button.Click -= value;}
        }

        public event CommandEventHandler Command
        {
            add { _button.Command += value; }
            remove { _button.Command -= value;}
        }

        public string CommandArgument
        {
            get { return _button.CommandArgument; }
            set { _button.CommandArgument = value; }
        }

        public string CommandName
        {
            get { return _button.CommandName; }
            set { _button.CommandName = value; }
        }

		public bool CausesValidation
		{
			get { return _button.CausesValidation; }
			set {_button.CausesValidation = value; }
		}

        #endregion

        #region IText Members
        private LinkButton _button = null;
        public Control Control
        {
            get {return _button;}
        }

        public bool Visible
        {
            get{return _button.Visible;}
            set{_button.Visible = value;}
        }
        
        public string Text
        {
            get{ return _button.Text;}
            set{_button.Text = value;}
        }

   
        public AttributeCollection Attributes
        {   
            get{ return _button.Attributes;}
        }

        #endregion

    }

    #endregion
}
