Adjust sidebar tree

assets/style.css

@@ -72,10 +72,10 @@ body {
 * { box-sizing: border-box; margin: 0; padding: 0; }
 
 a { color: var(--text); text-decoration: none; }
-a:hover { color: var(--primary-hover); }
+a:hover { color: var(--link-hover); }
 .content a { color: var(--link); }
 .content a:hover { color: var(--link-hover); }
-.content a.broken { color: var(--primary-hover); text-decoration: line-through; }
+.content a.broken { color: var(--link-hover); text-decoration: line-through; }
 .content a.broken:hover { color: var(--link-hover); }
 
 hr { border: none; border-top: var(--border-dashed); margin: var(--space-4) 0; }
@@ -714,14 +714,13 @@ aside.sidebar:empty { display: none; }
     border-left: 3px solid var(--primary);
     padding-left: calc(var(--space-2) - 3px);
 }
+.tree-row.is-active > .tree-name { color: var(--secondary); }
 .tree-row.is-disabled { color: var(--text-muted); cursor: default; }
 .tree-row.is-disabled:hover { background: none; }
 .tree-chevron { text-align: center; flex-shrink: 0; }
 .tree-chevron { width: 1.25rem; color: var(--secondary); }
 .tree-chevron.is-leaf { visibility: hidden; }
 .tree-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-/* Each nesting level gets a vertical guide rail down its left edge so depth
-   stays scannable in the compact view (cf. VS Code / file-explorer trees). */
 .tree-children {
     margin-left: var(--space-2);
     padding-left: var(--space-2);
@@ -732,14 +731,7 @@ aside.sidebar:empty { display: none; }
     padding: var(--space-1) 0;
     word-break: break-all;
 }
-/* Current-page row in the navigation rail. Mirrors .tree-row.is-selected so the
-   two tree surfaces stay visually consistent. */
-.tree-row.is-active {
-    background: var(--bg-panel-hover);
-    border-left: 3px solid var(--primary);
-    padding-left: calc(var(--space-2) - 3px);
-}
-.tree-row.is-active > .tree-name { color: var(--primary-hover); }
+
 
 /* Tree sidebar (persistent navigation) */
 .tree-sidebar {

assets/tree-sidebar.js

@@ -1,33 +1,29 @@
-(function () {
+;(function () {
   // This script owns the .tree-scroll child of the aside, not the aside itself.
-    var container = document.querySelector('aside.tree-sidebar .tree-scroll');
-    if (!container) return;
+  var container = document.querySelector("aside.tree-sidebar .tree-scroll")
+  if (!container) return
 
   function joinPath(parent, name) {
-        if (parent === '/' || parent === '') return '/' + name;
-        return parent.replace(/\/+$/, '') + '/' + name;
+    if (parent === "/" || parent === "") return "/" + name
+    return parent.replace(/\/+$/, "") + "/" + name
   }
 
   function encodeSegments(p) {
-        return p.replace(/^\/+/, '').split('/').map(encodeURIComponent).join('/');
+    return p.replace(/^\/+/, "").split("/").map(encodeURIComponent).join("/")
   }
 
   function folderHref(p) {
-        if (p === '/' || p === '') return '/';
-        return '/' + encodeSegments(p) + '/';
-    }
-
-    function fileHref(p) {
-        return '/' + encodeSegments(p);
+    if (p === "/" || p === "") return "/"
+    return "/" + encodeSegments(p) + "/"
   }
 
   function fetchFolder(path, expandTo) {
-        var url = folderHref(path) + '?tree=1';
-        if (expandTo) url += '&expandTo=' + encodeURIComponent(expandTo);
-        return fetch(url, { credentials: 'same-origin' }).then(function (r) {
-            if (!r.ok) throw new Error('HTTP ' + r.status);
-            return r.json();
-        });
+    var url = folderHref(path) + "?tree=1&foldersOnly=1"
+    if (expandTo) url += "&expandTo=" + encodeURIComponent(expandTo)
+    return fetch(url, { credentials: "same-origin" }).then(function (r) {
+      if (!r.ok) throw new Error("HTTP " + r.status)
+      return r.json()
+    })
   }
 
   // Current page as a canonical, DECODED wiki path ("/" for root, no trailing
@@ -35,166 +31,185 @@
   // thus fullPath) are decoded, so we must decode here too or paths containing
   // spaces / non-ASCII never match a row and the chain never expands.
   var activePath = (function () {
-        var p = window.location.pathname.replace(/\/+$/, '');
-        if (p === '') return '/';
-        try { return decodeURIComponent(p); } catch (e) { return p; }
-    })();
-    var activeRow = null;
+    var p = window.location.pathname.replace(/\/+$/, "")
+    if (p === "") return "/"
+    try {
+      return decodeURIComponent(p)
+    } catch (e) {
+      return p
+    }
+  })()
+  var activeRow = null
 
   function disabledRow(text) {
-        var row = document.createElement('div');
-        row.className = 'tree-row is-disabled';
-        row.textContent = text;
-        return row;
+    var row = document.createElement("div")
+    row.className = "tree-row is-disabled"
+    row.textContent = text
+    return row
   }
 
   // renderInto fills containerEl with rows for `entries` (children of
   // parentPath). Folders carrying a `children` array (the pre-expanded
   // ancestor chain from ?expandTo) are opened immediately and recurse.
   function renderInto(containerEl, parentPath, entries) {
-        if (!entries || entries.length === 0) {
-            containerEl.appendChild(disabledRow('(empty)'));
-            return;
-        }
     entries.forEach(function (entry) {
-            var built = buildRow(parentPath, entry);
-            containerEl.appendChild(built.row);
-            if (built.preExpand) built.open();
-        });
+      var built = buildRow(parentPath, entry)
+      containerEl.appendChild(built.row)
+      if (built.preExpand) built.open()
+    })
   }
 
   function buildRow(parentPath, entry) {
-        var fullPath = joinPath(parentPath, entry.name);
-        var isFolder = entry.kind === 'folder';
+    var fullPath = joinPath(parentPath, entry.name)
+    var row = document.createElement("div")
+    row.className = "tree-row"
 
-        var row = document.createElement('div');
-        row.className = 'tree-row';
+    var chevron = document.createElement("span")
+    chevron.className = "tree-chevron"
+    chevron.textContent = "▸"
+    row.appendChild(chevron)
 
-        var chevron = document.createElement('span');
-        chevron.className = 'tree-chevron';
-        if (isFolder) chevron.textContent = '▸'; // ▸
-        else chevron.classList.add('is-leaf');
-        row.appendChild(chevron);
+    var link = document.createElement("a")
+    link.className = "tree-name tree-folder"
+    link.textContent = entry.name
+    link.href = folderHref(fullPath)
+    row.appendChild(link)
 
-
-        var link = document.createElement('a');
-        link.className = 'tree-name ' + (isFolder ? 'tree-folder' : 'tree-file');
-        link.textContent = entry.name;
-        link.href = isFolder ? folderHref(fullPath) : fileHref(fullPath);
-        row.appendChild(link);
-
-        if (isFolder && fullPath === activePath) {
-            row.classList.add('is-active');
-            activeRow = row;
+    if (fullPath === activePath) {
+      row.classList.add("is-active")
+      activeRow = row
     }
 
-        var preChildren = (isFolder && entry.children) ? entry.children : null;
-        var childrenEl = null;
-        var loaded = false;
-        var isOpen = false;
+    var preChildren = entry.children ? entry.children : null
+    var childrenEl = null
+    var loaded = false
+    var isOpen = false
+    var isLeaf = false
 
     function ensureChildrenEl() {
       if (!childrenEl) {
-                childrenEl = document.createElement('div');
-                childrenEl.className = 'tree-children';
+        childrenEl = document.createElement("div")
+        childrenEl.className = "tree-children"
+      }
+      return childrenEl
+    }
+
+    function markLeaf() {
+      isLeaf = true
+      isOpen = false
+      chevron.textContent = "▸"
+      chevron.classList.add("is-leaf")
+      if (childrenEl && childrenEl.parentNode) {
+        childrenEl.parentNode.removeChild(childrenEl)
       }
-            return childrenEl;
     }
 
     function loadChildren() {
-            var el = ensureChildrenEl();
-            el.textContent = '';
-            el.appendChild(disabledRow('…'));
-            fetchFolder(fullPath).then(function (resp) {
-                el.textContent = '';
-                renderInto(el, fullPath, resp.entries);
-                loaded = true;
-            }).catch(function () {
-                el.textContent = '';
-                var err = document.createElement('div');
-                err.className = 'tree-row';
-                err.textContent = '(failed — tap to retry)';
-                err.addEventListener('click', function (e) {
-                    e.stopPropagation();
-                    loadChildren();
-                });
-                el.appendChild(err);
-            });
+      var el = ensureChildrenEl()
+      el.textContent = ""
+      el.appendChild(disabledRow("…"))
+      fetchFolder(fullPath)
+        .then(function (resp) {
+          el.textContent = ""
+          loaded = true
+          if (!resp.entries || resp.entries.length === 0) {
+            markLeaf()
+            return
+          }
+          renderInto(el, fullPath, resp.entries)
+        })
+        .catch(function () {
+          el.textContent = ""
+          var err = document.createElement("div")
+          err.className = "tree-row"
+          err.textContent = "(failed — tap to retry)"
+          err.addEventListener("click", function (e) {
+            e.stopPropagation()
+            loadChildren()
+          })
+          el.appendChild(err)
+        })
     }
 
     function open() {
-            if (!isFolder || isOpen) return;
-            var el = ensureChildrenEl();
-            row.parentNode.insertBefore(el, row.nextSibling);
-            chevron.textContent = '▾'; // ▾
-            isOpen = true;
+      if (isOpen || isLeaf) return
+      var el = ensureChildrenEl()
+      row.parentNode.insertBefore(el, row.nextSibling)
+      chevron.textContent = "▾" // ▾
+      isOpen = true
       if (!loaded) {
         if (preChildren) {
-                    renderInto(el, fullPath, preChildren);
-                    loaded = true;
+          renderInto(el, fullPath, preChildren)
+          loaded = true
         } else {
-                    loadChildren();
+          loadChildren()
         }
       }
     }
 
     function close() {
-            if (!isFolder || !isOpen) return;
+      if (!isOpen) return
       if (childrenEl && childrenEl.parentNode) {
-                childrenEl.parentNode.removeChild(childrenEl);
+        childrenEl.parentNode.removeChild(childrenEl)
       }
-            chevron.textContent = '▸';
-            isOpen = false;
+      chevron.textContent = "▸"
+      isOpen = false
     }
 
     // Clicking the name link navigates (folder) or opens the file; clicking
     // anywhere else on the row toggles expansion for folders.
-        row.addEventListener('click', function (e) {
-            if (e.target.closest('a.tree-name')) return;
-            if (!isFolder) return;
-            if (isOpen) close(); else open();
-        });
+    row.addEventListener("click", function (e) {
+      if (e.target.closest("a.tree-name")) return
+      if (isOpen) close()
+      else open()
+    })
 
-        return { row: row, open: open, preExpand: !!preChildren };
+    return { row: row, open: open, preExpand: !!preChildren }
   }
 
   function render() {
-        container.textContent = '';
-        var listing = document.createElement('div');
-        container.appendChild(listing);
-        listing.appendChild(disabledRow('…'));
+    container.textContent = ""
+    var listing = document.createElement("div")
+    container.appendChild(listing)
+    listing.appendChild(disabledRow("…"))
 
-        fetchFolder('/', activePath === '/' ? '' : activePath).then(function (resp) {
-            listing.textContent = '';
-            renderInto(listing, '/', resp.entries);
+    fetchFolder("/", activePath === "/" ? "" : activePath)
+      .then(function (resp) {
+        listing.textContent = ""
+        renderInto(listing, "/", resp.entries)
         if (activeRow) {
-                try { activeRow.scrollIntoView({ block: 'nearest' }); } catch (e) {}
+          try {
+            activeRow.scrollIntoView({ block: "nearest" })
+          } catch (e) {}
         }
-        }).catch(function () {
-            listing.textContent = '';
-            var err = document.createElement('div');
-            err.className = 'tree-row';
-            err.textContent = '(failed — tap to retry)';
-            err.addEventListener('click', function () { render(); });
-            listing.appendChild(err);
-        });
+      })
+      .catch(function () {
+        listing.textContent = ""
+        var err = document.createElement("div")
+        err.className = "tree-row"
+        err.textContent = "(failed — tap to retry)"
+        err.addEventListener("click", function () {
+          render()
+        })
+        listing.appendChild(err)
+      })
   }
 
   function setupMenuItem() {
-      var specials = document.querySelector('.actions-special');
-      if (!specials) return;
+    var specials = document.querySelector(".actions-special")
+    if (!specials) return
 
-      var item = document.createElement("button");
-      item.type = "button";
-      item.className = "btn btn-block";
-      item.title = "Folders";
-      item.textContent = "FOLDERS";
+    var item = document.createElement("button")
+    item.type = "button"
+    item.className = "btn btn-block"
+    item.title = "Folders"
+    item.textContent = "FOLDERS"
     item.addEventListener("click", function () {
-        if (typeof openOverlay === "function") openOverlay(container);
-      });
-      specials.appendChild(item);
+      if (typeof openOverlay === "function") openOverlay(container)
+    })
+    specials.appendChild(item)
   }
 
-    render();
-    setupMenuItem();
-})();
+  render()
+  setupMenuItem()
+})()

tree.go

@@ -40,18 +40,16 @@ func (h *handler) handleTree(w http.ResponseWriter, r *http.Request, urlPath, fs
 		return
 	}
 
-	entries, err := listTreeEntries(fsPath)
+	foldersOnly := r.URL.Query().Has("foldersOnly")
+
+	entries, err := listTreeEntries(fsPath, foldersOnly)
 	if err != nil {
 		http.Error(w, "read failed", http.StatusInternalServerError)
 		return
 	}
 
-	// expandTo asks for a nested listing: each folder along the ancestor chain
-	// carries its own children, recursively, down to the target. Used by the
-	// tree sidebar to render the current page's chain in one request. The flat
-	// picker omits expandTo and is unaffected.
 	if expandTo := r.URL.Query().Get("expandTo"); expandTo != "" {
-		expandTreeChain(fsPath, entries, treePathSegments(expandTo))
+		expandTreeChain(fsPath, entries, treePathSegments(expandTo), foldersOnly)
 	}
 
 	resp := treeResponse{Path: canonicalTreePath(urlPath), Entries: entries}
@@ -70,8 +68,8 @@ func canonicalTreePath(urlPath string) string {
 
 // listTreeEntries returns the immediate children of fsPath, filtering hidden
 // entries and index.md. Folders are listed before files; both groups are
-// sorted alphabetically.
-func listTreeEntries(fsPath string) ([]treeEntry, error) {
+// sorted alphabetically. foldersOnly will not list any individual files at all.
+func listTreeEntries(fsPath string, foldersOnly bool) ([]treeEntry, error) {
 	raw, err := os.ReadDir(fsPath)
 	if err != nil {
 		return nil, err
@@ -85,7 +83,7 @@ func listTreeEntries(fsPath string) ([]treeEntry, error) {
 		if e.IsDir() {
 			folders = append(folders, treeEntry{Name: name, Kind: "folder"})
 		} else {
-			if name == "index.md" {
+			if foldersOnly || name == "index.md" {
 				continue
 			}
 			files = append(files, treeEntry{Name: name, Kind: "file"})
@@ -113,7 +111,7 @@ func treePathSegments(p string) []string {
 // far as it still exists. Segments only ever match real directory names from
 // listTreeEntries (no "." or ".." entries), so this cannot traverse outside the
 // listed tree.
-func expandTreeChain(fsPath string, entries []treeEntry, segs []string) {
+func expandTreeChain(fsPath string, entries []treeEntry, segs []string, foldersOnly bool) {
 	if len(segs) == 0 {
 		return
 	}
@@ -122,12 +120,12 @@ func expandTreeChain(fsPath string, entries []treeEntry, segs []string) {
 			continue
 		}
 		childFs := filepath.Join(fsPath, segs[0])
-		kids, err := listTreeEntries(childFs)
+		kids, err := listTreeEntries(childFs, foldersOnly)
 		if err != nil {
 			return
 		}
 		entries[i].Children = kids
-		expandTreeChain(childFs, entries[i].Children, segs[1:])
+		expandTreeChain(childFs, entries[i].Children, segs[1:], foldersOnly)
 		return
 	}
 }