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using System.Net;
using System.Text;
using System.Text.Encodings.Web;
using Microsoft.AspNetCore.Html;
using Microsoft.AspNetCore.Mvc.Razor;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.AspNetCore.Mvc.Routing;
using Nop.Core.Infrastructure;
using Nop.Services.Localization;
using Nop.Services.Stores;
using Nop.Web.Framework.Events;
using Nop.Web.Framework.Models;
namespace Nop.Web.Framework.Extensions;
///
/// HTML extensions
///
public static class HtmlExtensions
{
#region Admin area extensions
///
/// Generate editor for localizable entities
///
/// Model type
/// Locale model type
/// HTML helper
/// ID of control
/// Template with localizable values
/// Template for standard (default) values
/// A value indicating whether to ignore localization if we have multiple stores
/// CSS class for localizedTemplate
///
/// A task that represents the asynchronous operation
/// The task result contains the localized editor
///
public static async Task LocalizedEditorAsync(this IHtmlHelper helper,
string name,
Func localizedTemplate,
Func standardTemplate,
bool ignoreIfSeveralStores = false,
string cssClass = null)
where TModel : ILocalizedModel
where TLocalizedModelLocal : ILocalizedLocaleModel
{
var localizationSupported = helper.ViewData.Model.Locales.Count > 1;
if (ignoreIfSeveralStores)
{
var storeService = EngineContext.Current.Resolve();
if ((await storeService.GetAllStoresAsync()).Count >= 2)
localizationSupported = false;
}
if (!localizationSupported)
return new HtmlString(await standardTemplate(helper.ViewData.Model).RenderHtmlContentAsync());
var localizationService = EngineContext.Current.Resolve();
var languageService = EngineContext.Current.Resolve();
var urlHelper = EngineContext.Current.Resolve().GetUrlHelper(helper.ViewContext);
var tabStrip = new StringBuilder();
var cssClassWithSpace = !string.IsNullOrEmpty(cssClass) ? $" {cssClass}" : null;
tabStrip.AppendLine($"");
//render input contains selected tab name
var tabNameToSelect = GetSelectedTabName(helper, name);
var selectedTabInput = new TagBuilder("input");
selectedTabInput.Attributes.Add("type", "hidden");
selectedTabInput.Attributes.Add("id", $"selected-tab-name-{name}");
selectedTabInput.Attributes.Add("name", $"selected-tab-name-{name}");
selectedTabInput.Attributes.Add("value", tabNameToSelect);
tabStrip.AppendLine(await selectedTabInput.RenderHtmlContentAsync());
tabStrip.AppendLine($"");
tabStrip.AppendLine($"");
tabStrip.AppendLine("");
//default tab
var standardTabName = $"{name}-standard-tab";
var standardTabSelected = string.IsNullOrEmpty(tabNameToSelect) || standardTabName == tabNameToSelect;
tabStrip.AppendLine(string.Format("- "));
if (standardTabSelected)
{
tabStrip.AppendLine($"{await localizationService.GetResourceAsync("Admin.Common.Standard")}");
}
else
{
tabStrip.AppendLine($"{await localizationService.GetResourceAsync("Admin.Common.Standard")}");
}
tabStrip.AppendLine("
");
foreach (var locale in helper.ViewData.Model.Locales)
{
//languages
var language = await languageService.GetLanguageByIdAsync(locale.LanguageId)
?? throw new Exception("Language cannot be loaded");
var localizedTabName = $"{name}-{language.Id}-tab";
tabStrip.AppendLine(string.Format("- "));
var iconUrl = urlHelper.Content("~/images/flags/" + language.FlagImageFileName);
var active = localizedTabName == tabNameToSelect ? "active" : null;
tabStrip.AppendLine($"
{WebUtility.HtmlEncode(language.Name)}");
tabStrip.AppendLine(" ");
}
tabStrip.AppendLine("
");
tabStrip.AppendLine("");
tabStrip.AppendLine("");
//default tab
tabStrip.AppendLine("");
tabStrip.AppendLine(string.Format("", standardTabSelected ? " show active" : null, standardTabName));
tabStrip.AppendLine(await standardTemplate(helper.ViewData.Model).RenderHtmlContentAsync());
tabStrip.AppendLine("");
for (var i = 0; i < helper.ViewData.Model.Locales.Count; i++)
{
//languages
var language = await languageService.GetLanguageByIdAsync(helper.ViewData.Model.Locales[i].LanguageId)
?? throw new Exception("Language cannot be loaded");
var localizedTabName = $"{name}-{language.Id}-tab";
tabStrip.AppendLine(string.Format("", localizedTabName == tabNameToSelect ? " show active" : null, localizedTabName));
tabStrip.AppendLine(await localizedTemplate(i).RenderHtmlContentAsync());
tabStrip.AppendLine("");
}
tabStrip.AppendLine("");
tabStrip.AppendLine("");
tabStrip.AppendLine("");
tabStrip.AppendLine("");
//render tabs script
var script = new TagBuilder("script");
script.InnerHtml.AppendHtml(
"$(function() {" +
"bindBootstrapTabSelectEvent('" + name + "', 'selected-tab-name-" + name + "');" +
"});");
var scriptTag = await script.RenderHtmlContentAsync();
tabStrip.AppendLine(scriptTag);
return new HtmlString(tabStrip.ToString());
}
///
/// Gets a selected card name (used in admin area to store selected panel name)
///
/// HtmlHelper
/// Name
public static string GetSelectedCardName(this IHtmlHelper helper)
{
//keep this method synchronized with
//"SaveSelectedCardName" method of \Area\Admin\Controllers\BaseAdminController.cs
var cardName = string.Empty;
const string dataKey = "nop.selected-card-name";
if (helper.ViewData.ContainsKey(dataKey))
cardName = helper.ViewData[dataKey].ToString();
if (helper.ViewContext.TempData.TryGetValue(dataKey, out var value))
cardName = value.ToString();
return cardName;
}
///
/// Gets a selected tab name (used in admin area to store selected tab name)
///
/// HtmlHelper
/// Key prefix. Pass null to ignore
/// Name
public static string GetSelectedTabName(this IHtmlHelper helper, string dataKeyPrefix = null)
{
//keep this method synchronized with
//"SaveSelectedTab" method of \Area\Admin\Controllers\BaseAdminController.cs
var tabName = string.Empty;
var dataKey = "nop.selected-tab-name";
if (!string.IsNullOrEmpty(dataKeyPrefix))
dataKey += $"-{dataKeyPrefix}";
if (helper.ViewData.ContainsKey(dataKey))
tabName = helper.ViewData[dataKey].ToString();
if (helper.ViewContext.TempData.TryGetValue(dataKey, out var value))
tabName = value.ToString();
return tabName;
}
///
/// Add a tab to TabStrip
///
/// AdminTabStripCreated
/// Tab Id
/// Tab name
/// url
/// Html content of new Tab
public static IHtmlContent TabContentByURL(this AdminTabStripCreated eventMessage, string tabId, string tabName, string url)
{
return new HtmlString($@"
");
}
///
/// Add a tab to TabStrip
///
/// AdminTabStripCreated
/// Tab Id
/// Tab name
/// Content model
/// Html content of new Tab
public static IHtmlContent TabContentByModel(this AdminTabStripCreated eventMessage, string tabId, string tabName, string contentModel)
{
return new HtmlString($@"
");
}
#region Form fields
///
/// Generate hint control
///
/// HTML helper
/// TexHint text
///
/// A task that represents the asynchronous operation
/// The task result contains the result
///
public static async Task HintAsync(this IHtmlHelper helper, string value)
{
//create tag builder
var builder = new TagBuilder("div");
builder.MergeAttribute("title", value);
builder.MergeAttribute("class", "ico-help");
builder.MergeAttribute("data-toggle", "tooltip");
var icon = new StringBuilder();
icon.Append("");
builder.InnerHtml.AppendHtml(icon.ToString());
//render tag
return new HtmlString(await builder.RenderHtmlContentAsync());
}
#endregion
#endregion
#region Common extensions
///
/// Convert IHtmlContent to string
///
/// HTML content
///
/// A task that represents the asynchronous operation
/// The task result contains the result
///
public static async Task RenderHtmlContentAsync(this IHtmlContent htmlContent)
{
await using var writer = new StringWriter();
htmlContent.WriteTo(writer, HtmlEncoder.Default);
return writer.ToString();
}
#endregion
}