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   at Dynamicweb.Rendering.TemplateRenderingService.Render(Template template)
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  1     @inherits Dynamicweb.Rendering.ViewModelTemplate<Dynamicweb.Frontend.ParagraphViewModel>
  2     @using System.Linq
  3     @using Dynamicweb.Frontend
  4     @using Dynamicweb.Frontend.Navigation
  5     
  6     @*  Mouldshop Category Siblings — the sibling nav at the top of the listing sidebar. TASK-0104.
  7     
  8         WHERE IT RENDERS. From our shadow of `Swift-v2_ProductListFacets.cshtml`, one call above
  9         both facet forms. There is no paragraph of ours in the sidebar column and adding one is an
 10         admin write, so the facets paragraph is the only template already standing in that column.
 11     
 12         DATA SOURCE — NOT A SECOND ONE. The same tree the mega menu (`MouldshopHeader.cshtml`) and
 13         the category grid (`MouldshopCategoryGrid.cshtml`) walk: `GetNavigationViewModel` from the
 14         root, `ShowInMenu` nodes, catalogue root found by the same `FindProductsNode`. The current
 15         category is the node DW marks `IsActive` — the flag the vendor breadcrumb uses to draw its
 16         `active` crumb. Menu, grid, breadcrumb and this list therefore cannot disagree about what
 17         exists or which one is current.
 18     
 19         WHAT IS LISTED — SUPERSEDED 2026-09-23 (operator). TASK-0104 listed the active category's
 20         SIBLINGS. It now lists the CHILDREN of a context category, under that category's name as a
 21         title, with "All" first. The rule for choosing the context is at the top of the code block
 22         below. Anywhere with no active catalogue node (search, a page outside the shop) nothing
 23         renders.
 24     
 25         CURRENT IS A <span aria-current="page">, NOT A LINK, drawn as a light-blue pill. Every entry
 26         carries the same pill box at rest, so selecting one changes its colour and never its size.
 27     
 28         NEVER THROWS. DW compiles templates on first request, so an exception here is a listing
 29         page down on first hit. Any failure degrades to no nav, facets intact. *@
 30     
 31     @functions {
 32         NavigationTreeViewModel GetTree(int rootPageId)
 33         {
 34             return Navigation.GetNavigationViewModel(new NavigationSettings
 35             {
 36                 StartLevel = 1,
 37                 StopLevel = 9,
 38                 RootPageId = rootPageId,
 39                 IncludeFoldersAndHidden = false,
 40                 ExpandMode = ExpandMode.All,
 41             });
 42         }
 43     
 44         // Identical to MouldshopHeader's and MouldshopCategoryGrid's, deliberately — one tree,
 45         // three consumers, same entry point.
 46         NavigationTreeNodeViewModel FindProductsNode(System.Collections.Generic.List<NavigationTreeNodeViewModel> topNodes)
 47         {
 48             var byName = topNodes.FirstOrDefault(n =>
 49                 !string.IsNullOrEmpty(n.Name) &&
 50                 (n.Name.IndexOf("product", System.StringComparison.OrdinalIgnoreCase) >= 0 ||
 51                  n.Name.IndexOf("shop", System.StringComparison.OrdinalIgnoreCase) >= 0 ||
 52                  n.Name.IndexOf("catalog", System.StringComparison.OrdinalIgnoreCase) >= 0));
 53             if (byName != null && (byName.Nodes?.Any(c => c.ShowInMenu) ?? false)) { return byName; }
 54             return topNodes.Where(n => n.Nodes?.Any(c => c.ShowInMenu) ?? false)
 55                            .OrderByDescending(n => n.Nodes.Count(c => c.ShowInMenu))
 56                            .FirstOrDefault();
 57         }
 58     
 59         // The node whose menu children include the active node, searched depth-first under the
 60         // catalogue root. The root itself when the root is what is active.
 61         NavigationTreeNodeViewModel FindActiveParent(NavigationTreeNodeViewModel node)
 62         {
 63             var kids = node?.Nodes?.Where(n => n.ShowInMenu).ToList();
 64             if (kids == null || kids.Count == 0) { return null; }
 65             if (kids.Any(n => n.IsActive)) { return node; }
 66             foreach (var kid in kids)
 67             {
 68                 var hit = FindActiveParent(kid);
 69                 if (hit != null) { return hit; }
 70             }
 71             return null;
 72         }
 73     
 74         // The active node itself, searched depth-first under the catalogue root.
 75         NavigationTreeNodeViewModel FindActive(NavigationTreeNodeViewModel node)
 76         {
 77             if (node == null) { return null; }
 78             if (node.IsActive) { return node; }
 79             var kids = node.Nodes?.Where(n => n.ShowInMenu) ?? Enumerable.Empty<NavigationTreeNodeViewModel>();
 80             foreach (var kid in kids)
 81             {
 82                 var hit = FindActive(kid);
 83                 if (hit != null) { return hit; }
 84             }
 85             return null;
 86         }
 87     
 88         System.Collections.Generic.List<NavigationTreeNodeViewModel> MenuKids(NavigationTreeNodeViewModel node)
 89         {
 90             return node?.Nodes?.Where(n => n.ShowInMenu && !string.IsNullOrWhiteSpace(n.Name)).ToList()
 91                    ?? new System.Collections.Generic.List<NavigationTreeNodeViewModel>();
 92         }
 93     }
 94     
 95     @{
 96         // Operator 2026-09-23: CHILDREN, not siblings; the category's title big on top; "All"
 97         // first and selected by default; the selected entry drawn as a light-blue pill.
 98         //
 99         // THE CONTEXT NODE is the category whose children are listed and whose name is the title:
100         //   - the active category, when it has children  -> "All" is selected;
101         //   - else its parent, when that parent is a category (not the catalogue root)
102         //                                                 -> the active child is selected;
103         //   - else the active category itself (a top-level category with no children)
104         //                                                 -> the list is "All" alone, selected.
105         // So a shopper who picks a subcategory keeps the same list and title, with the pill
106         // moved, and "All" takes them back to the parent. On the catalogue root the root is the
107         // context. The file keeps its TASK-0104 name so the facets shadow's one call is unchanged.
108         NavigationTreeNodeViewModel context = null;
109         NavigationTreeNodeViewModel active = null;
110         System.Collections.Generic.List<NavigationTreeNodeViewModel> children = null;
111         try
112         {
113             var tree = GetTree(0);
114             var topNodes = tree?.Nodes?.Where(n => n.ShowInMenu).ToList()
115                            ?? new System.Collections.Generic.List<NavigationTreeNodeViewModel>();
116             var productsNode = FindProductsNode(topNodes);
117             active = FindActive(productsNode);
118             if (active != null)
119             {
120                 if (MenuKids(active).Any() || active == productsNode)
121                 {
122                     context = active;
123                 }
124                 else
125                 {
126                     var parent = FindActiveParent(productsNode);
127                     context = (parent != null && parent != productsNode) ? parent : active;
128                 }
129                 children = MenuKids(context);
130             }
131         }
132         catch
133         {
134             context = null;
135         }
136         bool allSelected = context != null && context == active;
137         // TASK-0114 (operator, /en-us/shop/sale): a context category with NO children renders its
138         // title only - no "All" pill, no list, no divider. Everything else is unchanged.
139         bool titleOnly = context != null && (children == null || children.Count == 0);
140     
141         // THE CATEGORY'S OWN "ALL ..." CHILD REPLACES OUR SYNTHETIC "All" (operator, 2026-09-24:
142         // "there is proper button at the bottom of the categories list - but it should be on top;
143         // there is second, unwanted button All on top. Remove the unwanted and position the proper
144         // one on top"). Bikes has a real group "All bikes"; the synthetic pill duplicated it.
145         // Matched by NAME - a child whose name is "All" or starts with "All " - because that is
146         // the only thing that marks it; no field says "this is the catch-all group".
147         // When it exists: it is listed FIRST, the synthetic pill is not rendered, and on the
148         // context page itself (where "All" was selected by default) it carries the selected look.
149         // aria-current stays only on the page actually open. No such child: unchanged.
150         NavigationTreeNodeViewModel allChild = null;
151         if (!titleOnly)
152         {
153             allChild = children.FirstOrDefault(n => !string.IsNullOrWhiteSpace(n.Name) &&
154                 (n.Name.Trim().Equals("All", System.StringComparison.OrdinalIgnoreCase) ||
155                  n.Name.Trim().StartsWith("All ", System.StringComparison.OrdinalIgnoreCase)));
156             if (allChild != null)
157             {
158                 children = new System.Collections.Generic.List<NavigationTreeNodeViewModel> { allChild }
159                     .Concat(children.Where(n => n != allChild)).ToList();
160             }
161         }
162     }
163     
164     @if (context != null)
165     {
166         <nav class="ms-catnav@(titleOnly ? " ms-catnav--title-only" : "")" aria-labelledby="ms-catnav-title-@Model.ID">
167             <h2 class="ms-catnav-title" id="ms-catnav-title-@Model.ID">@context.Name</h2>
168             @if (!titleOnly)
169             {
170             <ul class="ms-catnav-list">
171                 @if (allChild == null)
172                 {
173                 <li class="ms-catnav-item">
174                     @if (allSelected)
175                     {
176                         <span class="ms-catnav-pill is-current" aria-current="page">@Translate("All")</span>
177                     }
178                     else
179                     {
180                         <a class="ms-catnav-pill" href="@context.Link">@Translate("All")</a>
181                     }
182                 </li>
183                 }
184                 @foreach (var node in children)
185                 {
186                     <li class="ms-catnav-item">
187                         @if (node.IsActive)
188                         {
189                             <span class="ms-catnav-pill is-current" aria-current="page">@node.Name</span>
190                         }
191                         else if (node == allChild && allSelected)
192                         {
193                             <a class="ms-catnav-pill is-current" href="@node.Link">@node.Name</a>
194                         }
195                         else
196                         {
197                             <a class="ms-catnav-pill" href="@node.Link">@node.Name</a>
198                         }
199                     </li>
200                 }
201             </ul>
202             }
203         </nav>
204     }
205