public static MvcHtmlString SortableListFor <VM, TItem>(
this HtmlHelper <VM> htmlHelper,
RenderInfo <IEnumerable <TItem> > renderInfo,
object template,
object addElementTemplate = null,
float opacity = 1,
bool canSort = true,
IDictionary <string, object> htmlAttributesContainer = null,
IDictionary <string, object> htmlAttributesItems = null,
bool enableMultipleInsert = true,
ExternalContainerType itemContainer = ExternalContainerType.li,
ExternalContainerType allItemsContainer = ExternalContainerType.ul,
object headerTemplate = null,
object footerTemplate = null,
string itemCss = null,
string altItemCss = null,
bool displayOnly = false,
string sortableHandle = null,
Func <TItem, int> templateSelector = null,
Func <int, IDictionary <string, object> > htmlAttributesSelector = null
)
{
if (template == null)
{
throw (new ArgumentNullException("template"));
}
if (renderInfo == null)
{
throw (new ArgumentNullException("renderiNFO"));
}
if (string.IsNullOrWhiteSpace(itemCss))
{
itemCss = string.Empty;
}
if (string.IsNullOrWhiteSpace(altItemCss))
{
altItemCss = string.Empty;
}
if (displayOnly)
{
canSort = false;
}
if (canSort)
{
itemContainer = ExternalContainerType.li;
allItemsContainer = ExternalContainerType.ul;
headerTemplate = null;
footerTemplate = null;
htmlHelper.ViewData[renderInfo.Prefix + "_Rendering"] = "SortableList_Dragging";
}
else
{
htmlHelper.ViewData[renderInfo.Prefix + "_Rendering"] = "SortableList_Dragging";
}
bool multipleTemplates = false;
if (template is string || !(template is object[]))
{
template = new object[] { template };
}
else if (templateSelector != null)
{
multipleTemplates = true;
}
int nTemplates = (template as object[]).Length;
Type[] allTypes = new Type[nTemplates];
int tcount = 0;
foreach (object t in (template as object[]))
{
if (t is string)
{
allTypes[tcount] = typeof(TItem);
}
else
{
allTypes[tcount] = TemplateInvoker <string> .ExtractModelType(t);
}
tcount++;
}
StringBuilder sb = new StringBuilder();
StringBuilder sbInit = new StringBuilder();
sbInit.Append(renderInfo.PartialRendering);
if (htmlAttributesContainer == null)
{
htmlAttributesContainer = new Dictionary <string, object>();
}
htmlAttributesContainer["id"] = BasicHtmlHelper.IdFromName(renderInfo.Prefix) + "_ItemsContainer";
string externalOpenTag = null;
string externalCloseTag = null;
string itemOpenTag = null;
string itemCloseTag = null;
BasicHtmlHelper.GetContainerTags(allItemsContainer, htmlAttributesContainer, out externalOpenTag, out externalCloseTag);
sb.Append(externalOpenTag);
if (htmlAttributesItems == null)
{
htmlAttributesItems = new Dictionary <string, object>();
}
IDictionary <string, object> fixedHtmlAttributesItems = htmlAttributesItems;
bool templateEnabled = false;
string addItemScriptFormat = addItemJQueryScriptFormat;
switch (MvcEnvironment.Validation(htmlHelper))
{
case ValidationType.StandardClient: break;
case ValidationType.UnobtrusiveClient: templateEnabled = true; break;
default: templateEnabled = true; break;
}
templateEnabled = templateEnabled && enableMultipleInsert;
int totalCount = 0;
string javasctiptOpacity = string.Empty;
string javascriptHandle = string.Empty;
string permutationElementPrefix = null;
if (renderInfo.Model == null)
{
renderInfo.Model = new List <TItem>();
}
if (renderInfo.Model != null)
{
if (headerTemplate != null)
{
if (multipleTemplates)
{
htmlAttributesItems = dictionarySelection(htmlAttributesSelector, fixedHtmlAttributesItems, -1);
}
ViewDataDictionary <TItem> dataDictionary = new ViewDataDictionary <TItem>();
dataDictionary.TemplateInfo.HtmlFieldPrefix = renderInfo.Prefix;
if (htmlHelper.ViewData.ContainsKey("ThemeParams"))
{
dataDictionary["ThemeParams"] = htmlHelper.ViewData["ThemeParams"];
}
BasicHtmlHelper.CopyRelevantErrors(dataDictionary.ModelState, htmlHelper.ViewData.ModelState, dataDictionary.TemplateInfo.HtmlFieldPrefix);
htmlAttributesItems["id"] = BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(renderInfo.Prefix, "Header"));
BasicHtmlHelper.GetContainerTags(itemContainer, htmlAttributesItems, out itemOpenTag, out itemCloseTag);
sb.Append(itemOpenTag);
sb.Append(new TemplateInvoker <TItem>(headerTemplate).Invoke <VM>(htmlHelper, dataDictionary));
sb.Append(itemCloseTag);
}
foreach (TItem x in renderInfo.Model)
{
if (x == null && htmlHelper.ViewContext.ViewData.ModelState.IsValid)
{
continue;
}
totalCount++;
int templateIndex = 0;
Type currType = typeof(TItem);
if (multipleTemplates)
{
templateIndex = templateSelector(x);
currType = allTypes[templateIndex];
htmlAttributesItems = dictionarySelection(htmlAttributesSelector, fixedHtmlAttributesItems, templateIndex);
}
IUpdateModel um = null;
if (x == null)
{
um = typeof(AutoEnumerableUpdater <string>).GetGenericTypeDefinition().MakeGenericType(currType)
.GetConstructor(new Type[0]).Invoke(new object[0]) as IUpdateModel;
}
else if (x.GetType() == typeof(TItem))
{
um = new AutoEnumerableUpdater <TItem>();
}
else
{
um = typeof(AutoEnumerableUpdater <string>).GetGenericTypeDefinition().MakeGenericType(x.GetType())
.GetConstructor(new Type[0]).Invoke(new object[0]) as IUpdateModel;
}
um.ImportFromModel(x, null, null, new object[0]);
string prefix = renderInfo.Prefix;
string partialPrefix = renderInfo.PartialPrefix;
string updateInfo = BasicHtmlHelper.RenderUpdateInfo <TItem>(htmlHelper, um, ref partialPrefix, new string[0]);
if (!displayOnly)
{
sbInit.Append(updateInfo);
}
prefix = htmlHelper.ViewData.TemplateInfo.GetFullHtmlFieldName(partialPrefix);
object currTemplate = (template as object[])[templateIndex];
ViewDataDictionary dataDictionary = null;
ITemplateInvoker currInvoker = null;
if (allTypes[templateIndex] == typeof(TItem))
{
dataDictionary = new ViewDataDictionary <TItem>(x);
currInvoker = new TemplateInvoker <TItem>(currTemplate);
}
else
{
dataDictionary = typeof(ViewDataDictionary <string>).GetGenericTypeDefinition().MakeGenericType(allTypes[templateIndex])
.GetConstructor(new Type[] { allTypes[templateIndex] }).Invoke(new object[] { x }) as ViewDataDictionary;
currInvoker = typeof(TemplateInvoker <string>).GetGenericTypeDefinition().MakeGenericType(allTypes[templateIndex])
.GetConstructor(new Type[] { typeof(object) }).Invoke(new object[] { currTemplate }) as ITemplateInvoker;
}
dataDictionary.TemplateInfo.HtmlFieldPrefix = BasicHtmlHelper.AddField(prefix, "$.Item");
if (htmlHelper.ViewData.ContainsKey("ThemeParams"))
{
dataDictionary["ThemeParams"] = htmlHelper.ViewData["ThemeParams"];
}
BasicHtmlHelper.CopyRelevantErrors(dataDictionary.ModelState, htmlHelper.ViewData.ModelState, dataDictionary.TemplateInfo.HtmlFieldPrefix);
htmlAttributesItems["id"] = BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(prefix, "$.Item")) + "_Container";
BasicHtmlHelper.GetContainerTags(itemContainer, htmlAttributesItems, out itemOpenTag, out itemCloseTag);
sb.Append(itemOpenTag);
sb.Append(currInvoker.Invoke <VM>(htmlHelper, dataDictionary));
sb.Append(itemCloseTag);
}
}
string delayedRendering = null;
if (addElementTemplate != null && !templateEnabled)
{
EnumerableUpdater <TItem> um = new EnumerableUpdater <TItem>(true);
string prefix = renderInfo.Prefix;
string partialPrefix = renderInfo.PartialPrefix;
sbInit.Append(
BasicHtmlHelper.RenderUpdateInfo <TItem>(htmlHelper, um, ref partialPrefix, new string[0]));
prefix = htmlHelper.ViewData.TemplateInfo.GetFullHtmlFieldName(partialPrefix);
sbInit.Append(htmlHelper.GenericInput(InputType.Hidden,
BasicHtmlHelper.AddField(partialPrefix, "$.Deleted"), um.Deleted, null));
delayedRendering = string.Format(
addItemScriptFormat,
BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(prefix, "$.Item.InnerContainer")));
ViewDataDictionary <TItem> dataDictionary = new ViewDataDictionary <TItem>(um.Item);
dataDictionary.TemplateInfo.HtmlFieldPrefix = BasicHtmlHelper.AddField(prefix, "$.Item");
if (htmlHelper.ViewData.ContainsKey("ThemeParams"))
{
dataDictionary["ThemeParams"] = htmlHelper.ViewData["ThemeParams"];
}
BasicHtmlHelper.CopyRelevantErrors(dataDictionary.ModelState, htmlHelper.ViewData.ModelState, dataDictionary.TemplateInfo.HtmlFieldPrefix);
htmlAttributesItems["id"] = BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(prefix, "$.Item")) + "_Container";
BasicHtmlHelper.GetContainerTags(itemContainer, htmlAttributesItems, out itemOpenTag, out itemCloseTag);
sb.Append(itemOpenTag);
sb.Append(new TemplateInvoker <TItem>(addElementTemplate).Invoke <VM>(htmlHelper, dataDictionary));
sb.Append(itemCloseTag);
}
if (canSort)
{
PermutationsUpdater <TItem> um = new PermutationsUpdater <TItem>();
um.ImportFromModel(null, null, null, new object[0]);
string prefix = renderInfo.Prefix;
string partialPrefix = renderInfo.PartialPrefix;
sbInit.Append(
BasicHtmlHelper.RenderUpdateInfo <TItem>(htmlHelper, um, ref partialPrefix, new string[0]));
prefix = htmlHelper.ViewData.TemplateInfo.GetFullHtmlFieldName(partialPrefix);
sbInit.Append(
string.Format("<input type='hidden' id={0} name={1} value=''/>",
BasicHtmlHelper.IdFromName(renderInfo.Prefix + "_Permutation"),
BasicHtmlHelper.AddField(prefix, "$.Permutation")));
if (opacity > 1f)
{
opacity = 1f;
}
else if (opacity < 0.01f)
{
opacity = 0.01f;
}
if (opacity < 1f)
{
javasctiptOpacity = string.Format(" opacity: {0}, ", opacity.ToString(CultureInfo.InvariantCulture));
}
if (sortableHandle != null)
{
javascriptHandle = string.Format(" handle: '{0}', ", sortableHandle);
}
permutationElementPrefix = prefix;
}
if (footerTemplate != null)
{
if (multipleTemplates)
{
htmlAttributesItems = dictionarySelection(htmlAttributesSelector, fixedHtmlAttributesItems, -2);
}
ViewDataDictionary <TItem> dataDictionary = new ViewDataDictionary <TItem>();
dataDictionary.TemplateInfo.HtmlFieldPrefix = renderInfo.Prefix;
if (htmlHelper.ViewData.ContainsKey("ThemeParams"))
{
dataDictionary["ThemeParams"] = htmlHelper.ViewData["ThemeParams"];
}
BasicHtmlHelper.CopyRelevantErrors(dataDictionary.ModelState, htmlHelper.ViewData.ModelState, dataDictionary.TemplateInfo.HtmlFieldPrefix);
htmlAttributesItems["id"] = BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(renderInfo.Prefix, "Footer"));
BasicHtmlHelper.GetContainerTags(itemContainer, htmlAttributesItems, out itemOpenTag, out itemCloseTag);
sb.Append(itemOpenTag);
sb.Append(new TemplateInvoker <TItem>(footerTemplate).Invoke <VM>(htmlHelper, dataDictionary));
sb.Append(itemCloseTag);
}
if (templateEnabled)
{
IUpdateModel um = null;
TItem dummyItem = default(TItem);
object[] allTemplates = template as object[];
StringBuilder alltemplateNames = new StringBuilder();
StringBuilder allhiddenNames = new StringBuilder();
StringBuilder allsymbolNames = new StringBuilder();
string basicTemplateSymbol = BasicHtmlHelper.GetUniqueSymbol(htmlHelper, templateSymbol);
for (int i = 0; i < allTemplates.Length; i++)
{
if (multipleTemplates)
{
htmlAttributesItems = dictionarySelection(htmlAttributesSelector, fixedHtmlAttributesItems, i);
}
if (allTypes[i] == typeof(TItem))
{
um = new AutoEnumerableUpdater <TItem>();
}
else
{
um = typeof(AutoEnumerableUpdater <string>).GetGenericTypeDefinition().MakeGenericType(allTypes[i])
.GetConstructor(new Type[0]).Invoke(new object[0]) as IUpdateModel;
}
string prefix = renderInfo.Prefix;
string partialPrefix = renderInfo.PartialPrefix;
string myTemplateSymbol = basicTemplateSymbol + i.ToString(CultureInfo.InvariantCulture);
sbInit.Append(
BasicHtmlHelper.RenderUpdateInfoI(htmlHelper, um, ref partialPrefix, new string[0], myTemplateSymbol));
prefix = htmlHelper.ViewData.TemplateInfo.GetFullHtmlFieldName(partialPrefix);
ViewDataDictionary dataDictionary = null;
ITemplateInvoker currInvoker = null;
if (allTypes[i] == typeof(TItem))
{
dataDictionary = new ViewDataDictionary <TItem>(dummyItem);
currInvoker = new TemplateInvoker <TItem>(allTemplates[i]);
}
else
{
dataDictionary = typeof(ViewDataDictionary <string>).GetGenericTypeDefinition().MakeGenericType(allTypes[i])
.GetConstructor(new Type[] { allTypes[i] }).Invoke(new object[] { dummyItem }) as ViewDataDictionary;
currInvoker = typeof(TemplateInvoker <string>).GetGenericTypeDefinition().MakeGenericType(allTypes[i])
.GetConstructor(new Type[] { typeof(object) }).Invoke(new object[] { allTemplates[i] }) as ITemplateInvoker;
}
dataDictionary.TemplateInfo.HtmlFieldPrefix = BasicHtmlHelper.AddField(prefix, "$.Item");
if (htmlHelper.ViewData.ContainsKey("ThemeParams"))
{
dataDictionary["ThemeParams"] = htmlHelper.ViewData["ThemeParams"];
}
BasicHtmlHelper.CopyRelevantErrors(dataDictionary.ModelState, htmlHelper.ViewData.ModelState, dataDictionary.TemplateInfo.HtmlFieldPrefix);
string templateId = BasicHtmlHelper.IdFromName(BasicHtmlHelper.AddField(prefix, "$.Item")) + "_Container";
htmlAttributesItems["id"] = templateId;
if (i > 0)
{
alltemplateNames.Append(", ");
allhiddenNames.Append(", ");
allsymbolNames.Append(", ");
}
alltemplateNames.Append("'");
alltemplateNames.Append(templateId);
alltemplateNames.Append("'");
allhiddenNames.Append("'");
allhiddenNames.Append(BasicHtmlHelper.IdFromName(prefix));
allhiddenNames.Append("'");
allsymbolNames.Append("/");
allsymbolNames.Append(myTemplateSymbol);
allsymbolNames.Append("/g");
BasicHtmlHelper.GetContainerTags(itemContainer, htmlAttributesItems, out itemOpenTag, out itemCloseTag);
sb.Append(string.Format("<span id='{0}' style='display:none' class='MVCCT_EncodedTemplate'>", templateId));
sb.Append(htmlHelper.Encode(itemOpenTag));
sb.Append(htmlHelper.Encode(currInvoker.Invoke <VM>(htmlHelper, dataDictionary)));
sb.Append(htmlHelper.Encode(itemCloseTag));
sb.Append("</span>");
}
sbInit.Append(string.Format(startTemplateScriptFormat, BasicHtmlHelper.IdFromName(renderInfo.Prefix),
canSort ? "true" : "false", totalCount, allsymbolNames.ToString(), alltemplateNames.ToString(),
allhiddenNames.ToString(), renderInfo.Prefix));
}
if (canSort)
{
sbInit.Append(string.Format(startScriptFormat, BasicHtmlHelper.IdFromName(renderInfo.Prefix), javascriptHandle + javasctiptOpacity, BasicHtmlHelper.IdFromName(permutationElementPrefix)));
}
string stylingJavaScript = string.Format(stylingScript, BasicHtmlHelper.IdFromName(renderInfo.Prefix), itemCss, altItemCss);
sbInit.Append(stylingJavaScript);
if (delayedRendering != null)
{
sbInit.Append(delayedRendering);
}
sb.Append(externalCloseTag);
sbInit.Insert(0, sb.ToString());
return(MvcHtmlString.Create(sbInit.ToString()));
}