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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;
/// <summary>
/// HTML extensions
/// </summary>
public static class HtmlExtensions
{
#region Admin area extensions
/// <summary>
/// Generate editor for localizable entities
/// </summary>
/// <typeparam name="TModel">Model type</typeparam>
/// <typeparam name="TLocalizedModelLocal">Locale model type</typeparam>
/// <param name="helper">HTML helper</param>
/// <param name="name">ID of control</param>
/// <param name="localizedTemplate">Template with localizable values</param>
/// <param name="standardTemplate">Template for standard (default) values</param>
/// <param name="ignoreIfSeveralStores">A value indicating whether to ignore localization if we have multiple stores</param>
/// <param name="cssClass">CSS class for localizedTemplate</param>
/// <returns>
/// A task that represents the asynchronous operation
/// The task result contains the localized editor
/// </returns>
public static async Task<IHtmlContent> LocalizedEditorAsync<TModel, TLocalizedModelLocal>(this IHtmlHelper<TModel> helper,
string name,
Func<int, HelperResult> localizedTemplate,
Func<TModel, HelperResult> standardTemplate,
bool ignoreIfSeveralStores = false,
string cssClass = null)
where TModel : ILocalizedModel<TLocalizedModelLocal>
where TLocalizedModelLocal : ILocalizedLocaleModel
{
var localizationSupported = helper.ViewData.Model.Locales.Count > 1;
if (ignoreIfSeveralStores)
{
var storeService = EngineContext.Current.Resolve<IStoreService>();
if ((await storeService.GetAllStoresAsync()).Count >= 2)
localizationSupported = false;
}
if (!localizationSupported)
return new HtmlString(await standardTemplate(helper.ViewData.Model).RenderHtmlContentAsync());
var localizationService = EngineContext.Current.Resolve<ILocalizationService>();
var languageService = EngineContext.Current.Resolve<ILanguageService>();
var urlHelper = EngineContext.Current.Resolve<IUrlHelperFactory>().GetUrlHelper(helper.ViewContext);
var tabStrip = new StringBuilder();
var cssClassWithSpace = !string.IsNullOrEmpty(cssClass) ? $" {cssClass}" : null;
tabStrip.AppendLine($"<div id=\"{name}\" class=\"nav-tabs-custom nav-tabs-localized-fields{cssClassWithSpace}\">");
//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", $"selected-tab-name-{name}");
selectedTabInput.Attributes.Add("value", tabNameToSelect);
tabStrip.AppendLine(await selectedTabInput.RenderHtmlContentAsync());
tabStrip.AppendLine($"<div class=\"card card-primary card-outline card-outline-tabs\">");
tabStrip.AppendLine($"<div class=\"card-header p-0 pt-1 border-bottom-0\">");
tabStrip.AppendLine("<ul class=\"nav nav-tabs\" id=\"custom-content-above-tab\" role=\"tablist\" >");
//default tab
var standardTabName = $"{name}-standard-tab";
var standardTabSelected = string.IsNullOrEmpty(tabNameToSelect) || standardTabName == tabNameToSelect;
tabStrip.AppendLine(string.Format("<li class=\"nav-item\">"));
if (standardTabSelected)
{
tabStrip.AppendLine($"<a class=\"nav-link active\" data-tab-name=\"{standardTabName}\" href=\"#{standardTabName}\" data-toggle=\"pill\" role=\"tab\" aria-selected=\"false\">{await localizationService.GetResourceAsync("Admin.Common.Standard")}</a>");
}
else
{
tabStrip.AppendLine($"<a class=\"nav-link\" data-tab-name=\"{standardTabName}\" href=\"#{standardTabName}\" data-toggle=\"pill\" role=\"tab\" aria-selected=\"false\">{await localizationService.GetResourceAsync("Admin.Common.Standard")}</a>");
}
tabStrip.AppendLine("</li>");
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 = $"{name}-{language.Id}-tab";
tabStrip.AppendLine(string.Format("<li class=\"nav-item\">"));
var iconUrl = urlHelper.Content("~/images/flags/" + language.FlagImageFileName);
var active = localizedTabName == tabNameToSelect ? "active" : null;
tabStrip.AppendLine($"<a class=\"nav-link {active}\" data-tab-name=\"{localizedTabName}\" href=\"#{localizedTabName}\" data-toggle=\"pill\" role=\"tab\" aria-selected=\"false\"><img alt='' src='{iconUrl}'>{WebUtility.HtmlEncode(language.Name)}</a>");
tabStrip.AppendLine("</li>");
}
tabStrip.AppendLine("</ul>");
tabStrip.AppendLine("</div>");
tabStrip.AppendLine("<div class=\"card-body\">");
//default tab
tabStrip.AppendLine("<div class=\"tab-content\" id=\"custom-content-above-tabContent\">");
tabStrip.AppendLine(string.Format("<div class=\"tab-pane fade{0}\" id=\"{1}\" role=\"tabpanel\">", standardTabSelected ? " show active" : null, standardTabName));
tabStrip.AppendLine(await standardTemplate(helper.ViewData.Model).RenderHtmlContentAsync());
tabStrip.AppendLine("</div>");
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 = $"{name}-{language.Id}-tab";
tabStrip.AppendLine(string.Format("<div class=\"tab-pane fade{0}\" id=\"{1}\" role=\"tabpanel\">", localizedTabName == tabNameToSelect ? " show active" : null, localizedTabName));
tabStrip.AppendLine(await localizedTemplate(i).RenderHtmlContentAsync());
tabStrip.AppendLine("</div>");
}
tabStrip.AppendLine("</div>");
tabStrip.AppendLine("</div>");
tabStrip.AppendLine("</div>");
tabStrip.AppendLine("</div>");
//render tabs script
var script = new TagBuilder("script");
script.InnerHtml.AppendHtml(
"$(function() {" +
"bindBootstrapTabSelectEvent('" + name + "', 'selected-tab-name-" + name + "');" +
"});");
var scriptTag = await script.RenderHtmlContentAsync();
tabStrip.AppendLine(scriptTag);
return new HtmlString(tabStrip.ToString());
}
/// <summary>
/// Gets a selected card name (used in admin area to store selected panel name)
/// </summary>
/// <param name="helper">HtmlHelper</param>
/// <returns>Name</returns>
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;
}
/// <summary>
/// Gets a selected tab name (used in admin area to store selected tab name)
/// </summary>
/// <param name="helper">HtmlHelper</param>
/// <param name="dataKeyPrefix">Key prefix. Pass null to ignore</param>
/// <returns>Name</returns>
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 += $"-{dataKeyPrefix}";
if (helper.ViewData.ContainsKey(dataKey))
tabName = helper.ViewData[dataKey].ToString();
if (helper.ViewContext.TempData.TryGetValue(dataKey, out var value))
tabName = value.ToString();
return tabName;
}
/// <summary>
/// Add a tab to TabStrip
/// </summary>
/// <param name="eventMessage">AdminTabStripCreated</param>
/// <param name="tabId">Tab Id</param>
/// <param name="tabName">Tab name</param>
/// <param name="url">url</param>
/// <returns>Html content of new Tab</returns>
public static IHtmlContent TabContentByURL(this AdminTabStripCreated eventMessage, string tabId, string tabName, string url)
{
return new HtmlString($@"
<script>
$(function() {{
$('<li><a data-tab-name='{tabId}' data-toggle='tab' href='#{tabId}'>{tabName}</a></li>').appendTo('#{eventMessage.TabStripName} .nav-tabs:first');
$.get('{url}', function(result) {{
$(`<div class='tab-pane' id='{tabId}'>` + result + `</div>`).appendTo('#{eventMessage.TabStripName} .tab-content:first');
}});
}});
</script>");
}
/// <summary>
/// Add a tab to TabStrip
/// </summary>
/// <param name="eventMessage">AdminTabStripCreated</param>
/// <param name="tabId">Tab Id</param>
/// <param name="tabName">Tab name</param>
/// <param name="contentModel">Content model</param>
/// <returns>Html content of new Tab</returns>
public static IHtmlContent TabContentByModel(this AdminTabStripCreated eventMessage, string tabId, string tabName, string contentModel)
{
return new HtmlString($@"
<script>
$(function() {{
$(`<li><a data-tab-name='{tabId}' data-toggle='tab' href='#{tabId}'>{tabName}</a></li>`).appendTo('#{eventMessage.TabStripName} .nav-tabs:first');
$(`<div class='tab-pane' id='{tabId}'>{contentModel}</div>`).appendTo('#{eventMessage.TabStripName} .tab-content:first');
}});
</script>");
}
#region Form fields
/// <summary>
/// Generate hint control
/// </summary>
/// <param name="helper">HTML helper</param>
/// <param name="value">TexHint text</param>
/// <returns>
/// A task that represents the asynchronous operation
/// The task result contains the result
/// </returns>
public static async Task<IHtmlContent> 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("<i class='fas fa-circle-question'></i>");
builder.InnerHtml.AppendHtml(icon.ToString());
//render tag
return new HtmlString(await builder.RenderHtmlContentAsync());
}
#endregion
#endregion
#region Common extensions
/// <summary>
/// Convert IHtmlContent to string
/// </summary>
/// <param name="htmlContent">HTML content</param>
/// <returns>
/// A task that represents the asynchronous operation
/// The task result contains the result
/// </returns>
public static async Task<string> RenderHtmlContentAsync(this IHtmlContent htmlContent)
{
await using var writer = new StringWriter();
htmlContent.WriteTo(writer, HtmlEncoder.Default);
return writer.ToString();
}
#endregion
}