/// <summary>
///
/// </summary>
/// <param name="context"></param>
/// <param name="output"></param>
public override void Process(TagHelperContext context, TagHelperOutput output)
{
//分页model为空
if (Paging == null)
{
return;
}
//没有数据
if (Paging.TotalCount <= 0)
{
return;
}
string routeName = Paging.RouteName;
string controller = "", action = "";
if (String.IsNullOrEmpty(routeName))
{
if (ViewContext.ActionDescriptor.AttributeRouteInfo != null)
{
if (!String.IsNullOrEmpty(ViewContext.ActionDescriptor.AttributeRouteInfo.Name))
{
routeName = ViewContext.ActionDescriptor.AttributeRouteInfo.Name;
}
}
}
if (String.IsNullOrEmpty(routeName))
{
controller = ViewContext.ActionDescriptor.RouteValues["controller"];
action = ViewContext.ActionDescriptor.RouteValues["action"];
}
IUrlHelper urlHelper = new UrlHelperFactory().GetUrlHelper(ViewContext);
//连接地址
string urlString = null;
if (!String.IsNullOrEmpty(routeName))
{
urlString = urlHelper.RouteUrl(routeName, Paging.RouteArg);
}
else
{
urlString = urlHelper.Action(action, controller, Paging.RouteArg);
}
urlString = urlString.Any(o => o == '?') ? urlString + "&page={0}&size={1}" : urlString + "?page={0}&size={1}";
StringBuilder sb = new StringBuilder();
//默认显示最多7个连续按钮
int display = 7;
int minDisplay = 1;
int maxDisplay = 7;
if (Paging.TotalPages > display)
{
if (Paging.PageIndex + display / 2 >= Paging.TotalPages)
{
maxDisplay = Paging.TotalPages;
minDisplay = Paging.TotalPages - display;
}
else if (Paging.PageIndex > display / 2)
{
minDisplay = Paging.PageIndex - display / 2;
maxDisplay = Paging.PageIndex + display / 2;
}
}
else
{
minDisplay = 1;
maxDisplay = Paging.TotalPages;
}
string href = Ajax ? "href=\"javascript:\" data-href" : "href";
sb.Append("<nav><ul class=\"pagination\">");
sb.AppendFormat($"<li class=\"disabled\"><a>当前{Paging.PageIndex}/{Paging.TotalPages}页 共{Paging.TotalCount}条</a></li>");
#region 一页
if (Paging.HasPreviousPage)
{
sb.AppendFormat($"<li><a {href}=\"{String.Format(urlString, Paging.PageIndex - 1, Paging.PageSize)}\">上一页</a></li>");
}
else
{
sb.Append("<li class=\"disabled\"><a href=\"javascript: \">上一页</a></li>");
}
#endregion
if (Paging.PageIndex > display / 2 + 2)
{
sb.Append($"<li><a {href} = \"{String.Format(urlString, 1, Paging.PageSize)}\" >1</a></li>");
sb.Append("<li><a href=\"javascript:\">...</a></li>");
}
//else if (Paging.PageIndex == display / 2 + 2)
//{
// sb.Append($"<li><a {href}=\"{String.Format(urlString, 1, Paging.PageSize)}\">1</a></li>");
//}
for (int i = minDisplay; i <= maxDisplay; i++)
{
if (i == Paging.PageIndex)
{
sb.Append($"<li class=\"active\"><a href = \"javascript:\" >{i}</a></li>");
}
else
{
sb.Append($"<li><a {href} = \"{String.Format(urlString, i, Paging.PageSize)}\">{i}</a></li>");
}
}
if (maxDisplay + 1 < Paging.TotalPages)
{
sb.Append("<li><a href=\"javascript:\" >...</ a ></li>");
sb.AppendFormat($"<li><a {href} = \"{String.Format(urlString, Paging.TotalPages, Paging.PageSize)}\" >{Paging.TotalPages}</a></li>");
}
else if (maxDisplay + 1 == Paging.TotalPages)
{
sb.Append($"<li><a {href}= \"{String.Format(urlString, Paging.TotalPages, Paging.PageSize)}\" >{Paging.TotalPages}</a></li>");
}
#region 一页
if (Paging.HasNextPage)
{
sb.Append($"<li class=\"next\"><a {href}=\"{String.Format(urlString, Paging.PageIndex + 1, Paging.PageSize)}\">下一页</a></li>");
}
else
{
sb.Append("<li class=\"disabled\"><a href=\"javascript:\">下一页</a></li>");
}
#endregion
sb.Append("<li> </li>");
#region 每页条数选择按钮
sb.Append("<li> ");
sb.Append("<div class=\"btn-group\">");
sb.Append("<button type=\"button\" class=\"btn btn-white dropdown-toggle btn-sm\" style=\"padding:6px 10px;\" data-toggle=\"dropdown\">");
sb.AppendFormat("每页{0}条 <span class=\"ace-icon fa fa-caret-down icon-on-right\"></span>", Paging.PageSize);
sb.Append("</button>");
sb.Append("<ul class=\"dropdown-menu\" role=\"menu\">");
sb.Append($"<li><a {href}=\"{String.Format(urlString, Paging.PageIndex, 20)}\">每页20条</a></li>");
sb.Append($"<li><a {href}=\"{String.Format(urlString, Paging.PageIndex, 30)}\">每页30条</a></li>");
sb.Append($"<li><a {href}=\"{String.Format(urlString, Paging.PageIndex, 50)}\">每页50条</a></li>");
sb.Append($"<li><a {href}=\"{String.Format(urlString, Paging.PageIndex, 100)}\">每页100条</a></li>");
sb.Append("</ul>");
sb.Append("</div>");
sb.Append("</li>");
#endregion
sb.Append("</ul></nav>");
#region jquery操作
if (Ajax)
{
sb.Append("<script>");
sb.Append("$(function(){" +
"$('.pagination a[data-href]').click(function(e){" +
"e.preventDefault();" +
"layer.load(2);" +
"var href = $(this).data('href');" +
"$.ajax({" +
"url:href," +
"type:'POST'," +
"success:function(html){" +
"$('" + DataBox + "').html(html);" +
"$('html').scrollTop(0)}," +
"error:function(){" +
"layer.msg('请求数据错误');" +
"},complete:function(){" +
"layer.closeAll();" +
"}" +
"});" +
"});" +
"})");
sb.Append("</script>");
}
#endregion
output.Content.SetHtmlContent(sb.ToString());
}