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| using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using Microsoft.Web.Mvc.Internal;
namespace GMS.Web.Mvc.Html
{
public static class HtmlHelpers
{
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, null, new RouteValueDictionary(), new RouteValueDictionary());
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, object routeValues)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, null, new RouteValueDictionary(routeValues), new RouteValueDictionary());
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, string controllerName)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, controllerName, new RouteValueDictionary(), new RouteValueDictionary());
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, RouteValueDictionary routeValues)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, null, routeValues, new RouteValueDictionary());
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, object routeValues, object htmlanchorAttributes)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, null, new RouteValueDictionary(routeValues), new RouteValueDictionary(htmlanchorAttributes), null);
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, RouteValueDictionary routeValues, IDictionary<string, object> htmlanchorAttributes, IDictionary<string, object> htmlImageAttributes)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, null, routeValues, htmlanchorAttributes, htmlImageAttributes);
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, string controllerName, object routeValues, object htmlanchorAttributes)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, controllerName, new RouteValueDictionary(routeValues), new RouteValueDictionary(htmlanchorAttributes), null);
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, string controllerName, string protocol, string hostName, string fragment, object routeValues, object htmlanchorAttributes, object htmlImageAttributes)
{
return htmlHelper.ActionImage(imageUrl, linkText, actionName, controllerName, protocol, hostName, fragment, new RouteValueDictionary(routeValues), new RouteValueDictionary(htmlanchorAttributes), new RouteValueDictionary(htmlImageAttributes));
}
public static string ActionImage<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> action, string imageUrl, string linkText) where TController : Controller
{
return htmlHelper.ActionImage(action, imageUrl, linkText, null, null, null);
}
public static string ActionImage<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> action, string imageUrl, string linkText, object routeValues) where TController : Controller
{
return htmlHelper.ActionImage(action, imageUrl, linkText, routeValues, null, null);
}
public static string ActionImage<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> action, string imageUrl, string linkText, object routeValues, object htmlanchorAttributes, object htmlImageAttributes) where TController : Controller
{
return htmlHelper.ActionImage(action, imageUrl, linkText, routeValues, new RouteValueDictionary(htmlanchorAttributes), new RouteValueDictionary(htmlImageAttributes));
}
public static string ActionImage<TController>(this HtmlHelper htmlHelper, Expression<Action<TController>> action, string imageUrl, string linkText, object routeValues, IDictionary<string, object> htmlanchorAttributes, IDictionary<string, object> htmlImageAttributes) where TController : Controller
{
var _routeValuesFromExpression = ExpressionHelper.GetRouteValuesFromExpression(action);
var _mergedRouteValues = MergeRouteValueDictionaries(_routeValuesFromExpression, new RouteValueDictionary(routeValues));
// get the action name
//
var _actionName = ((MethodCallExpression)action.Body).Method.Name;
// get the bare url for the Action using the current
// request context
//
var _url = new UrlHelper(htmlHelper.ViewContext.RequestContext).Action(_actionName, _mergedRouteValues);
return GetImageLink(_url, linkText, imageUrl, htmlanchorAttributes, htmlImageAttributes);
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, string controllerName, RouteValueDictionary routeValues, IDictionary<string, object> htmlanchorAttributes, IDictionary<string, object> htmlImageAttributes)
{
// get the bare url for the Action using the current
// request context
//
var _url = new UrlHelper(htmlHelper.ViewContext.RequestContext).Action(actionName, controllerName, routeValues);
return GetImageLink(_url, linkText, imageUrl, htmlanchorAttributes, htmlImageAttributes);
}
public static string ActionImage(this HtmlHelper htmlHelper, string imageUrl, string linkText, string actionName, string controllerName, string protocol, string hostName, string fragment, RouteValueDictionary routeValues, IDictionary<string, object> htmlanchorAttributes, IDictionary<string, object> htmlImageAttributes)
{
// get the bare url for the Action using the current
// request context
//
var _url = new UrlHelper(htmlHelper.ViewContext.RequestContext).Action(actionName, controllerName, routeValues, protocol, hostName);
return GetImageLink(_url, linkText, imageUrl, htmlanchorAttributes, htmlImageAttributes);
}
/// <summary>
/// Build up the anchor and image tag.
/// </summary>
/// <param name="url">The URL.</param>
/// <param name="linkText">The link text.</param>
/// <param name="imageUrl">The image URL.</param>
/// <param name="htmlanchorAttributes">The HTML anchor attributes.</param>
/// <param name="htmlImageAttributes">The HTML image attributes.</param>
/// <returns></returns>
internal static string GetImageLink(string url, string linkText, string imageUrl, IDictionary<string, object> htmlanchorAttributes, IDictionary<string, object> htmlImageAttributes)
{
// build up the image link.
// <a href=\"ActionUrl\"><img src=\"ImageUrl\" alt=\"Your Link Text\" /></a>
//
var _linkText = !string.IsNullOrEmpty(linkText) ? HttpUtility.HtmlEncode(linkText) : string.Empty;
// build the img tag
//
TagBuilder _image = new TagBuilder("img");
_image.MergeAttributes(htmlImageAttributes);
_image.MergeAttribute("src", imageUrl);
_image.MergeAttribute("alt", _linkText);
// build the anchor tag
//
TagBuilder _link = new TagBuilder("a");
_link.MergeAttributes(htmlanchorAttributes);
_link.MergeAttribute("href", url);
// place the img tag inside the anchor tag.
//
_link.InnerHtml = _image.ToString(TagRenderMode.Normal);
// render the image link.
//
return _link.ToString(TagRenderMode.Normal);
}
/// <summary>
/// Merges the 2 source route value dictionaries.
/// </summary>
/// <param name="routeValueDictionary1">RouteValueDictionary 1.</param>
/// <param name="routeValueDictionary2">RouteValueDictionary 2.</param>
/// <returns></returns>
internal static RouteValueDictionary MergeRouteValueDictionaries(RouteValueDictionary routeValueDictionary1, RouteValueDictionary routeValueDictionary2)
{
var _mergedRouteValues = new RouteValueDictionary();
if ((routeValueDictionary1 != null) & (routeValueDictionary2 != null))
{
foreach (KeyValuePair<string, object> routeElement in routeValueDictionary1)
{
_mergedRouteValues[routeElement.Key] = routeElement.Value;
}
foreach (KeyValuePair<string, object> routeElement in routeValueDictionary2)
{
_mergedRouteValues[routeElement.Key] = routeElement.Value;
}
return _mergedRouteValues;
}
return null;
}
}
} |
.
