private static MvcHtmlString MvcCaptcha(this HtmlHelper helper, string actionName, string controllerName, MvcCaptchaOptions options)
{
if (options == null)
{
options = new MvcCaptchaOptions();
}
MvcCaptchaImage mvcCaptchaImage = new MvcCaptchaImage(options);
HttpContext.Current.Session.Add(mvcCaptchaImage.UniqueId, mvcCaptchaImage);
UrlHelper urlHelper = new UrlHelper(helper.ViewContext.RequestContext);
StringBuilder stringBuilder = new StringBuilder(1500);
stringBuilder.Append("\r\n<!--MvcCaptcha 1.1 for ASP.NET MVC 2 RC Copyright:2009-2010 Webdiyer (http://www.webdiyer.com)-->\r\n");
stringBuilder.Append("<input type=\"hidden\" name=\"_mvcCaptchaGuid\" id=\"_mvcCaptchaGuid\"");
if (options.DelayLoad)
{
stringBuilder.Append("/><script language=\"javascript\" type=\"text/javascript\">if (typeof (jQuery) == \"undefined\") { alert(\"jQuery脚本库未加载，请检查！\"); }");
stringBuilder.Append("var _mvcCaptchaPrevGuid = null,_mvcCaptchaImgLoaded = false;function _loadMvcCaptchaImage(){");
stringBuilder.Append("if(!_mvcCaptchaImgLoaded){$.ajax({type:'GET',url:'");
stringBuilder.Append(urlHelper.Action("MvcCaptchaLoader", "_MvcCaptcha", new RouteValueDictionary
{
{
"area",
null
}
}));
stringBuilder.Append("?'+_mvcCaptchaPrevGuid,global:false,success:function(data){_mvcCaptchaImgLoaded=true;");
stringBuilder.Append("$(\"#_mvcCaptchaGuid\").val(data);_mvcCaptchaPrevGuid=data;$(\"#");
stringBuilder.Append(options.CaptchaImageContainerId).Append("\").html('");
stringBuilder.Append(MvcCaptchaHelper.CreateImgTag(urlHelper.Action(actionName, controllerName, new RouteValueDictionary
{
{
"area",
null
}
}) + "?'+data+'", options, null));
stringBuilder.Append("');}});} };function _reloadMvcCaptchaImage(){_mvcCaptchaImgLoaded=false;_loadMvcCaptchaImage();};$(function(){");
stringBuilder.Append("if($(\"#").Append(options.ValidationInputBoxId).Append("\").length==0){alert(\"未能找到验证码输入文本框，请检查ValidationInputBoxId属性是否设置正确！\");}");
stringBuilder.Append("if($(\"#").Append(options.CaptchaImageContainerId).Append("\").length==0){alert(\"未能找到验证码图片父容器，请检查CaptchaImageContainerId属性是否设置正确！\");}");
stringBuilder.Append("$(\"#").Append(options.ValidationInputBoxId);
stringBuilder.Append("\").bind(\"focus\",_loadMvcCaptchaImage)});</script>");
}
else
{
stringBuilder.AppendFormat(" value=\"{0}\" />", mvcCaptchaImage.UniqueId);
stringBuilder.Append(MvcCaptchaHelper.CreateImgTag(urlHelper.Action(actionName, controllerName, new RouteValueDictionary
{
{
"area",
null
}
}) + "?" + mvcCaptchaImage.UniqueId, options, mvcCaptchaImage.UniqueId));
stringBuilder.Append("<script language=\"javascript\" type=\"text/javascript\">function _reloadMvcCaptchaImage(){var ci=document.getElementById(\"");
stringBuilder.Append(mvcCaptchaImage.UniqueId);
stringBuilder.Append("\");var sl=ci.src.length;if(ci.src.indexOf(\"&\")>-1)sl=ci.src.indexOf(\"&\");ci.src=ci.src.substr(0,sl)+\"&\"+(new Date().valueOf());}</script>");
}
stringBuilder.Append("\r\n<!--MvcCaptcha 1.1 for ASP.NET MVC 2 RC Copyright:2009-2010 Webdiyer (http://www.webdiyer.com)-->\r\n");
return MvcHtmlString.Create(stringBuilder.ToString());
}
public ActionResult MvcCaptchaLoader()
{
string text = base.Request.ServerVariables["Query_String"];
if (!string.IsNullOrEmpty(text))
{
base.HttpContext.Session.Remove(text);
}
MvcCaptchaOptions mvcCaptchaOptions = new MvcCaptchaOptions();
MvcCaptchaConfigSection config = MvcCaptchaConfigSection.GetConfig();
if (config != null)
{
mvcCaptchaOptions.TextChars = config.TextChars;
mvcCaptchaOptions.TextLength = config.TextLength;
mvcCaptchaOptions.FontWarp = config.FontWarp;
mvcCaptchaOptions.BackgroundNoise = config.BackgroundNoise;
mvcCaptchaOptions.LineNoise = config.LineNoise;
}
MvcCaptchaImage mvcCaptchaImage = new MvcCaptchaImage(mvcCaptchaOptions);
base.HttpContext.Session.Add(mvcCaptchaImage.UniqueId, mvcCaptchaImage);
base.HttpContext.Response.Cache.SetNoStore();
base.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
return(base.Content(mvcCaptchaImage.UniqueId));
}
private static MvcHtmlString MvcCaptcha(this HtmlHelper helper, string actionName, string controllerName, MvcCaptchaOptions options)
{
if (options == null)
{
options = new MvcCaptchaOptions();
}
MvcCaptchaImage mvcCaptchaImage = new MvcCaptchaImage(options);
HttpContext.Current.Session.Add(mvcCaptchaImage.UniqueId, mvcCaptchaImage);
UrlHelper urlHelper = new UrlHelper(helper.ViewContext.RequestContext);
StringBuilder stringBuilder = new StringBuilder(1500);
stringBuilder.Append("\r\n<!--MvcCaptcha 1.1 for ASP.NET MVC 2 RC Copyright:2009-2010 Webdiyer (http://www.webdiyer.com)-->\r\n");
stringBuilder.Append("<input type=\"hidden\" name=\"_mvcCaptchaGuid\" id=\"_mvcCaptchaGuid\"");
if (options.DelayLoad)
{
stringBuilder.Append("/><script language=\"javascript\" type=\"text/javascript\">if (typeof (jQuery) == \"undefined\") { alert(\"jQuery脚本库未加载，请检查！\"); }");
stringBuilder.Append("var _mvcCaptchaPrevGuid = null,_mvcCaptchaImgLoaded = false;function _loadMvcCaptchaImage(){");
stringBuilder.Append("if(!_mvcCaptchaImgLoaded){$.ajax({type:'GET',url:'");
stringBuilder.Append(urlHelper.Action("MvcCaptchaLoader", "_MvcCaptcha", new RouteValueDictionary
{
{
"area",
null
}
}));
stringBuilder.Append("?'+_mvcCaptchaPrevGuid,global:false,success:function(data){_mvcCaptchaImgLoaded=true;");
stringBuilder.Append("$(\"#_mvcCaptchaGuid\").val(data);_mvcCaptchaPrevGuid=data;$(\"#");
stringBuilder.Append(options.CaptchaImageContainerId).Append("\").html('");
stringBuilder.Append(MvcCaptchaHelper.CreateImgTag(urlHelper.Action(actionName, controllerName, new RouteValueDictionary
{
{
"area",
null
}
}) + "?'+data+'", options, null));
stringBuilder.Append("');}});} };function _reloadMvcCaptchaImage(){_mvcCaptchaImgLoaded=false;_loadMvcCaptchaImage();};$(function(){");
stringBuilder.Append("if($(\"#").Append(options.ValidationInputBoxId).Append("\").length==0){alert(\"未能找到验证码输入文本框，请检查ValidationInputBoxId属性是否设置正确！\");}");
stringBuilder.Append("if($(\"#").Append(options.CaptchaImageContainerId).Append("\").length==0){alert(\"未能找到验证码图片父容器，请检查CaptchaImageContainerId属性是否设置正确！\");}");
stringBuilder.Append("$(\"#").Append(options.ValidationInputBoxId);
stringBuilder.Append("\").bind(\"focus\",_loadMvcCaptchaImage)});</script>");
}
else
{
stringBuilder.AppendFormat(" value=\"{0}\" />", mvcCaptchaImage.UniqueId);
stringBuilder.Append(MvcCaptchaHelper.CreateImgTag(urlHelper.Action(actionName, controllerName, new RouteValueDictionary
{
{
"area",
null
}
}) + "?" + mvcCaptchaImage.UniqueId, options, mvcCaptchaImage.UniqueId));
stringBuilder.Append("<script language=\"javascript\" type=\"text/javascript\">function _reloadMvcCaptchaImage(){var ci=document.getElementById(\"");
stringBuilder.Append(mvcCaptchaImage.UniqueId);
stringBuilder.Append("\");var sl=ci.src.length;if(ci.src.indexOf(\"&\")>-1)sl=ci.src.indexOf(\"&\");ci.src=ci.src.substr(0,sl)+\"&\"+(new Date().valueOf());}</script>");
}
stringBuilder.Append("\r\n<!--MvcCaptcha 1.1 for ASP.NET MVC 2 RC Copyright:2009-2010 Webdiyer (http://www.webdiyer.com)-->\r\n");
return(MvcHtmlString.Create(stringBuilder.ToString()));
}
private static string CreateImgTag(string url, MvcCaptchaOptions options, string id)
{
StringBuilder stringBuilder = new StringBuilder("<a href=\"javascript:_reloadMvcCaptchaImage()\"><img src=\"");
stringBuilder.Append(url);
stringBuilder.Append("\" alt=\"MvcCaptcha\" title=\"刷新图片\" width=\"");
stringBuilder.Append(options.Width);
stringBuilder.Append("\" height=\"");
stringBuilder.Append(options.Height);
if (!string.IsNullOrEmpty(id))
{
stringBuilder.Append("\" id=\"").Append(id);
}
stringBuilder.Append("\" border=\"0\"/></a><a href=\"javascript:_reloadMvcCaptchaImage()\">").Append(options.ReloadLinkText).Append("</a>");
return stringBuilder.ToString();
}
private static string CreateImgTag(string url, MvcCaptchaOptions options, string id)
{
StringBuilder stringBuilder = new StringBuilder("<a href=\"javascript:_reloadMvcCaptchaImage()\"><img src=\"");
stringBuilder.Append(url);
stringBuilder.Append("\" alt=\"MvcCaptcha\" title=\"刷新图片\" width=\"");
stringBuilder.Append(options.Width);
stringBuilder.Append("\" height=\"");
stringBuilder.Append(options.Height);
if (!string.IsNullOrEmpty(id))
{
stringBuilder.Append("\" id=\"").Append(id);
}
stringBuilder.Append("\" border=\"0\"/></a><a href=\"javascript:_reloadMvcCaptchaImage()\">").Append(options.ReloadLinkText).Append("</a>");
return(stringBuilder.ToString());
}
public ActionResult MvcCaptchaLoader()
{
string text = base.Request.ServerVariables["Query_String"];
if (!string.IsNullOrEmpty(text))
{
base.HttpContext.Session.Remove(text);
}
MvcCaptchaOptions mvcCaptchaOptions = new MvcCaptchaOptions();
MvcCaptchaConfigSection config = MvcCaptchaConfigSection.GetConfig();
if (config != null)
{
mvcCaptchaOptions.TextChars = config.TextChars;
mvcCaptchaOptions.TextLength = config.TextLength;
mvcCaptchaOptions.FontWarp = config.FontWarp;
mvcCaptchaOptions.BackgroundNoise = config.BackgroundNoise;
mvcCaptchaOptions.LineNoise = config.LineNoise;
}
MvcCaptchaImage mvcCaptchaImage = new MvcCaptchaImage(mvcCaptchaOptions);
base.HttpContext.Session.Add(mvcCaptchaImage.UniqueId, mvcCaptchaImage);
base.HttpContext.Response.Cache.SetNoStore();
base.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
return base.Content(mvcCaptchaImage.UniqueId);
}
public static MvcHtmlString MvcCaptcha(this HtmlHelper helper, MvcCaptchaOptions options)
{
return helper.MvcCaptcha("MvcCaptchaImage", "_MvcCaptcha", options);
}
internal MvcCaptchaImage(MvcCaptchaOptions options)
{
this.CaptchaOptions = options;
this.UniqueId = Guid.NewGuid().ToString("N");
this._rand = new Random();
}
public static MvcHtmlString MvcCaptcha(this HtmlHelper helper, MvcCaptchaOptions options)
{
return(helper.MvcCaptcha("MvcCaptchaImage", "_MvcCaptcha", options));
}
internal MvcCaptchaImage(MvcCaptchaOptions options)
{
this.CaptchaOptions = options;
this.UniqueId = Guid.NewGuid().ToString("N");
this._rand = new Random();
}
