JW/Framework/Bowin.Web.Controls.Mvc/Component.LinkButton/LinkButton.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Bowin.Web.Controls.Mvc
{
    public class LinkButton : BaseControl
    {
        /// <summary>
        /// 图像地址
        /// </summary>
        protected string ImageURL { get; set; }
        /// <summary>
        /// 超链接显示的文本
        /// </summary>
        protected string Text { get; set; }
        /// <summary>
        /// 超链接地址
        /// </summary>
        protected string Href { get; set; }
        /// <summary>
        /// 跳转方式
        /// </summary>
        protected TargetTypeEnum? Target { get; set; }
        /// <summary>
        /// 事件绑定
        /// </summary>
        protected Dictionary<MouseEventEnum, string> Function { get; set; }

        public LinkButton()
        {
        }

        public Dictionary<string, string> GetAttributesList()
        {
            Dictionary<string, string> attributesList = new Dictionary<string, string>();

            if (!string.IsNullOrEmpty(this.ID))
                attributesList.Add("id", this.ID);
            else
                attributesList.Add("id", string.Format("btn_{0}", Guid.NewGuid().ToString().Replace("-", "").Substring(0, 6)));

            if (!string.IsNullOrEmpty(this.CssClass))
                attributesList.Add("class", this.CssClass);

            if (!string.IsNullOrEmpty(Href))
                attributesList.Add(
                    "href",
                    Href.ToString().IndexOf("://") == -1 ? string.Format("http://{0}", Href.ToString()) : Href.ToString());
            else
                attributesList.Add("href", "JavaScript:void(0);");

            if (Target.HasValue)
            {
                switch (Target)
                {
                    case TargetTypeEnum.Blank:
                        attributesList.Add("target", "_blank");
                        break;
                    case TargetTypeEnum.Parent:
                        attributesList.Add("target", "_parent");
                        break;
                    case TargetTypeEnum.Top:
                        attributesList.Add("target", "_top");
                        break;
                    default:
                        break;
                }
            }

            if (Function != null && Function.Count > 0)
            {
                foreach (KeyValuePair<MouseEventEnum, string> kv in Function)
                {
                    string eventStr = "";
                    switch (kv.Key)
                    {
                        case MouseEventEnum.OnClick:
                            eventStr = "onclick";
                            break;
                        case MouseEventEnum.OnMouseOut:
                            eventStr = "onmouseout";
                            break;
                        case MouseEventEnum.OnMouseOver:
                            eventStr = "onmouseover";
                            break;
                    }
                    attributesList.Add(eventStr, kv.Value);
                }
            }

            #region data-options

            Dictionary<string, string> optionsDic = new Dictionary<string, string>();
            //optionsDic.Add("id", ID);

            attributesList.Add("data-options", string.Join(",", optionsDic.Select(x => string.Format("{0}:{1}", x.Key, x.Value))));

            #endregion

            return attributesList;
        }

        public static LinkButton CreateControl(LinkButtonOptions linkButtonOptions, IDictionary<string, string> attributes = null)
        {
            LinkButton linkButton = new LinkButton();

            if (attributes != null)
            {
                linkButton.Attributes = attributes;
            }

            linkButton.CssClass = linkButtonOptions.CssClass;
            linkButton.IsShow = linkButtonOptions.IsShow;
            linkButton.IsEnabled = linkButtonOptions.IsEnabled;
            linkButton.Function = linkButtonOptions.Function;
            linkButton.Href = linkButtonOptions.Href;
            linkButton.ID = linkButtonOptions.ID;
            linkButton.Target = linkButtonOptions.Target;
            linkButton.Text = linkButtonOptions.Text;
            linkButton.ImageURL = linkButtonOptions.ImageURL;

            return linkButton;
        }

        public override string Render()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("<li><a ");
            sb.Append(string.Join(" ", GetAttributesList().Select(x => string.Format("{0}=\"{1}\"", x.Key, x.Value))));
            sb.Append(" >");

            if (!string.IsNullOrEmpty(ImageURL))
                sb.AppendFormat("<img src=\"{0}\" alt=\"图片装载错误\" title=\"{1}\" />", this.ImageURL, this.Text);
            else if (!string.IsNullOrEmpty(Text))
                sb.AppendFormat("{0}", this.Text);
            else if (!string.IsNullOrEmpty(Href))
                sb.AppendFormat("{0}", this.Href);
            else
                throw new Exception("LinkButton必须最少指定Text或Href属性任意一项");

            sb.Append("</a></li>");

            return sb.ToString();
        }

    }
}