Update

.gitignore

@@ -0,0 +1 @@
+__pycache__

generate_gallery.py

@@ -143,18 +143,88 @@ def build_gallery(source_dir: Path, web_dir: Path,
     else:
         title = f"Gallery: {relative_path}"
 
+    # Calculate statistics for current directory
+    current_stats = calculate_directory_stats(web_dir)
+    stats = {
+        "file_count": len(items),
+        "folder_count": len(subdir_names),
+        "total_size": format_file_size(current_stats["total_size"]),
+        "total_size_bytes": current_stats["total_size"]
+    }
+
     with output_html.open("w") as f:
         f.write(template.render(
             title=title,
             items=items,
             subdirs=subdir_names,
             relpath=str(relative_path),
-            ui=CONFIG.ui
+            ui=CONFIG.ui,
+            stats=stats
         ))
 
     print(f"Generated {output_html}")
 
 
+def calculate_directory_stats(directory: Path) -> dict:
+    """
+    Calculate statistics for a directory.
+
+    Args:
+        directory: Path to the directory to analyze
+
+    Returns:
+        Dictionary containing file count, folder count, and total size
+    """
+    stats = {
+        "file_count": 0,
+        "folder_count": 0,
+        "total_size": 0,
+        "pdf_size": 0,
+        "png_size": 0
+    }
+
+    if not directory.exists():
+        return stats
+
+    for item in directory.rglob("*"):
+        if item.is_file():
+            stats["file_count"] += 1
+            size = item.stat().st_size
+            stats["total_size"] += size
+
+            if item.suffix.lower() == '.pdf':
+                stats["pdf_size"] += size
+            elif item.suffix.lower() == '.png':
+                stats["png_size"] += size
+        elif item.is_dir():
+            stats["folder_count"] += 1
+
+    return stats
+
+
+def format_file_size(size_bytes: int) -> str:
+    """
+    Format file size in human readable format.
+
+    Args:
+        size_bytes: Size in bytes
+
+    Returns:
+        Formatted size string
+    """
+    if size_bytes == 0:
+        return "0 B"
+
+    size_names = ["B", "KB", "MB", "GB", "TB"]
+    size = float(size_bytes)
+    i = 0
+    while size >= 1024 and i < len(size_names) - 1:
+        size /= 1024
+        i += 1
+
+    return f"{size:.1f} {size_names[i]}"
+
+
 def main() -> None:
     """
     Main entry point for gallery generation.
@@ -206,6 +276,15 @@ def main() -> None:
                 "png_href": png_name
             }]
 
+            # Calculate statistics for single file
+            current_stats = calculate_directory_stats(source_web_dir)
+            stats = {
+                "file_count": 1,
+                "folder_count": 0,
+                "total_size": format_file_size(current_stats["total_size"]),
+                "total_size_bytes": current_stats["total_size"]
+            }
+
             output_html = source_web_dir / "index.html"
             with output_html.open("w") as f:
                 f.write(template.render(
@@ -213,7 +292,8 @@ def main() -> None:
                     items=items,
                     subdirs=[],
                     relpath=source.name,
-                    ui=CONFIG.ui
+                    ui=CONFIG.ui,
+                    stats=stats
                 ))
 
             print(f"Generated {output_html}")

template.html

@@ -278,6 +278,18 @@
       text-decoration: none;
     }
     
+    .grid-item.highlighted {
+      border-color: var(--button-bg);
+      box-shadow: 0 0 15px rgba(0, 120, 212, 0.3);
+      transform: translateY(-2px);
+      animation: highlightPulse 2s ease-in-out;
+    }
+    
+    @keyframes highlightPulse {
+      0%, 100% { transform: translateY(-2px) scale(1); }
+      50% { transform: translateY(-2px) scale(1.02); }
+    }
+    
     .plot-name {
       margin-top: 0.8rem;
       word-wrap: break-word;
@@ -509,6 +521,47 @@
       font-weight: 500;
     }
 
+    /* ========================================
+       GALLERY STATISTICS
+       ======================================== */
+    .gallery-stats {
+      position: fixed;
+      bottom: 20px;
+      left: 20px;
+      background: var(--card-bg);
+      border: 1px solid var(--border-color);
+      border-radius: 8px;
+      padding: 0.8rem 1rem;
+      font-size: 0.85rem;
+      color: var(--breadcrumb-color);
+      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
+      z-index: 500;
+      opacity: 0.8;
+      transition: opacity 0.2s ease;
+      max-width: 200px;
+    }
+    
+    .gallery-stats:hover {
+      opacity: 1;
+    }
+    
+    .stats-item {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      margin: 0.2rem 0;
+      white-space: nowrap;
+    }
+    
+    .stats-label {
+      margin-right: 0.8rem;
+    }
+    
+    .stats-value {
+      font-weight: 600;
+      color: var(--text-color);
+    }
+
     /* ========================================
        SUBDIRECTORIES LIST
        ======================================== */
@@ -583,9 +636,6 @@
   
   <!-- Navigation Buttons -->
   <div class="navigation">
-    <button class="nav-btn" onclick="goToContent()" id="contentBtn">
-      🎯 Go to Content
-    </button>
     <button class="nav-btn" onclick="window.history.back()">
       ← Back
     </button>
@@ -673,6 +723,26 @@
     </div>
   </div>
 
+  <!-- Gallery Statistics -->
+  <div class="gallery-stats" id="galleryStats">
+    <div class="stats-item">
+      <span class="stats-label">📊 Files:</span>
+      <span class="stats-value" id="fileCount">0</span>
+    </div>
+    <div class="stats-item">
+      <span class="stats-label">📁 Folders:</span>
+      <span class="stats-value" id="folderCount">0</span>
+    </div>
+    <div class="stats-item">
+      <span class="stats-label">💾 Size:</span>
+      <span class="stats-value" id="totalSize">0 KB</span>
+    </div>
+    <div class="stats-item">
+      <span class="stats-label">🕒 Updated:</span>
+      <span class="stats-value" id="lastUpdated">Now</span>
+    </div>
+  </div>
+
   <script>
     // ========================================
     // GALLERY APPLICATION CLASS
@@ -696,7 +766,8 @@
         this.initKeyboardShortcuts();
         this.updateRecentPlotsDisplay();
         this.trackPlotClicks();
-        this.hideContentButtonIfNeeded();
+        this.handleThumbnailHighlight();
+        this.updateGalleryStats();
       }
 
       /**
@@ -782,7 +853,7 @@
       }
 
       /**
-       * Recursively build tree structure for folders
+       * Recursively build tree structure for folders with collapsed empty directories
        */
       async buildTreeRecursive(path, depth, currentPath, maxDepth = 5) {
         if (depth > maxDepth) {
@@ -790,9 +861,6 @@
           return `<div class="tree-item">${indent}└─ ...</div>`;
         }
         
-        const indent = '  '.repeat(depth);
-        const folderName = path.split('/').filter(p => p !== '' && p !== 'index.html').pop() || 'Gallery';
-        
         try {
           const response = await fetch(path);
           const htmlContent = await response.text();
@@ -801,6 +869,25 @@
           
           const subdirs = doc.querySelectorAll('h2 + ul li a');
           const items = doc.querySelectorAll('.grid-item');
+          
+          // Check if this is an empty directory (only one subdirectory, no items)
+          if (items.length === 0 && subdirs.length === 1) {
+            // This is an empty directory, collapse it with its child
+            const subdir = subdirs[0];
+            const href = subdir.getAttribute('href');
+            if (href) {
+              const baseUrl = path.replace(/\/[^\/]*$/, '/');
+              const subPath = baseUrl + href;
+              
+              // Get the collapsed path by following the chain of empty directories
+              const collapsedPath = await this.getCollapsedPath(path, subPath);
+              return await this.buildCollapsedTreeItem(collapsedPath, depth, currentPath, maxDepth);
+            }
+          }
+          
+          // Normal directory processing
+          const indent = '  '.repeat(depth);
+          const folderName = path.split('/').filter(p => p !== '' && p !== 'index.html').pop() || 'Gallery';
           const totalItems = items.length + subdirs.length;
           const arrow = depth === 0 ? '' : '└─ ';
           
@@ -823,11 +910,108 @@
           
           return html;
         } catch (error) {
+          const indent = '  '.repeat(depth);
           const arrow = depth === 0 ? '' : '└─ ';
+          const folderName = path.split('/').filter(p => p !== '' && p !== 'index.html').pop() || 'Gallery';
           return `<div class="tree-item">${indent}${arrow}📁 ${folderName} (error loading)</div>`;
         }
       }
 
+      /**
+       * Get the collapsed path by following empty directories
+       */
+      async getCollapsedPath(startPath, currentPath) {
+        const pathSegments = [];
+        let path = startPath;
+        
+        while (true) {
+          try {
+            const response = await fetch(path);
+            const htmlContent = await response.text();
+            const parser = new DOMParser();
+            const doc = parser.parseFromString(htmlContent, 'text/html');
+            
+            const subdirs = doc.querySelectorAll('h2 + ul li a');
+            const items = doc.querySelectorAll('.grid-item');
+            
+            const folderName = path.split('/').filter(p => p !== '' && p !== 'index.html').pop() || 'Gallery';
+            pathSegments.push({ name: folderName, path: path });
+            
+            // If this directory has items or multiple subdirectories, stop collapsing
+            if (items.length > 0 || subdirs.length !== 1) {
+              break;
+            }
+            
+            // Continue to the single subdirectory
+            const subdir = subdirs[0];
+            const href = subdir.getAttribute('href');
+            if (href) {
+              const baseUrl = path.replace(/\/[^\/]*$/, '/');
+              path = baseUrl + href;
+            } else {
+              break;
+            }
+          } catch (error) {
+            break;
+          }
+        }
+        
+        return {
+          segments: pathSegments,
+          finalPath: path
+        };
+      }
+
+      /**
+       * Build a collapsed tree item for empty directory chains
+       */
+      async buildCollapsedTreeItem(collapsedPath, depth, currentPath, maxDepth) {
+        const indent = '  '.repeat(depth);
+        const arrow = depth === 0 ? '' : '└─ ';
+        
+        // Create the collapsed display name
+        const displayName = collapsedPath.segments.map(seg => seg.name).join(' / ');
+        const finalPath = collapsedPath.finalPath;
+        
+        // Get information about the final directory
+        let totalItems = 0;
+        let subdirs = [];
+        try {
+          const response = await fetch(finalPath);
+          const htmlContent = await response.text();
+          const parser = new DOMParser();
+          const doc = parser.parseFromString(htmlContent, 'text/html');
+          
+          const subdirElements = doc.querySelectorAll('h2 + ul li a');
+          const items = doc.querySelectorAll('.grid-item');
+          totalItems = items.length + subdirElements.length;
+          
+          subdirs = Array.from(subdirElements);
+        } catch (error) {
+          // Handle error case
+        }
+        
+        let html = '';
+        if (finalPath === currentPath) {
+          html += `<div class="tree-item">${indent}${arrow}📁 <span class="tree-current">${displayName}</span> (${totalItems} items)</div>`;
+        } else {
+          html += `<div class="tree-item">${indent}${arrow}📁 <a href="${finalPath}" class="tree-link">${displayName}</a> (${totalItems} items)</div>`;
+        }
+        
+        // Process subdirectories of the final path
+        for (let i = 0; i < subdirs.length; i++) {
+          const subdir = subdirs[i];
+          const href = subdir.getAttribute('href');
+          if (href) {
+            const baseUrl = finalPath.replace(/\/[^\/]*$/, '/');
+            const subPath = baseUrl + href;
+            html += await this.buildTreeRecursive(subPath, depth + 1, currentPath, maxDepth);
+          }
+        }
+        
+        return html;
+      }
+
       /**
        * Initialize search functionality with debouncing
        */
@@ -1037,11 +1221,16 @@
         const plotPath = pathParts.join(' / ');
         const thumbUrl = plotHref.replace('.pdf', '.png');
         
+        // Determine the gallery page URL (directory containing the plot)
+        const plotDir = plotHref.substring(0, plotHref.lastIndexOf('/'));
+        const galleryUrl = plotDir + '/index.html';
+        
         const plotInfo = {
           name: plotName,
           path: plotPath,
           href: plotHref,
           thumbUrl: thumbUrl,
+          galleryUrl: galleryUrl,
           timestamp: Date.now()
         };
         
@@ -1074,7 +1263,7 @@
         let html = '';
         recentPlots.forEach(plot => {
           html += `
-            <div class="recent-plot" onclick="app.openRecentPlot('${plot.href}')" title="${plot.name}">
+            <div class="recent-plot" onclick="app.openRecentPlot('${plot.galleryUrl || plot.href}', '${plot.name}')" title="${plot.name}">
               <img src="${plot.thumbUrl}" class="recent-plot-thumb" alt="${plot.name}" />
               <div class="recent-plot-info">
                 <div class="recent-plot-name">${plot.name}</div>
@@ -1088,10 +1277,13 @@
       }
 
       /**
-       * Open recent plot and close sidebar
+       * Open recent plot gallery page and highlight thumbnail
        */
-      openRecentPlot(href) {
-        window.open(href, '_blank');
+      openRecentPlot(galleryUrl, plotName) {
+        // Navigate to gallery page with plot highlight parameter
+        const url = new URL(galleryUrl, window.location.origin);
+        url.searchParams.set('highlight', plotName);
+        window.location.href = url.toString();
         this.toggleSidebar();
       }
 
@@ -1118,6 +1310,125 @@
         });
       }
 
+      /**
+       * Handle thumbnail highlighting from URL parameters
+       */
+      handleThumbnailHighlight() {
+        const urlParams = new URLSearchParams(window.location.search);
+        const highlightPlot = urlParams.get('highlight');
+        
+        if (highlightPlot) {
+          // Find and highlight the thumbnail
+          const gridItems = document.querySelectorAll('.grid-item');
+          gridItems.forEach(item => {
+            const plotName = item.querySelector('.plot-name');
+            if (plotName && plotName.textContent.trim() === highlightPlot) {
+              item.classList.add('highlighted');
+              // Scroll to the highlighted item
+              setTimeout(() => {
+                item.scrollIntoView({ 
+                  behavior: 'smooth', 
+                  block: 'center' 
+                });
+              }, 100);
+              // Remove highlight after animation
+              setTimeout(() => {
+                item.classList.remove('highlighted');
+              }, 3000);
+            }
+          });
+          
+          // Clean up URL
+          const newUrl = new URL(window.location);
+          newUrl.searchParams.delete('highlight');
+          window.history.replaceState({}, document.title, newUrl.toString());
+        }
+      }
+
+      /**
+       * Update gallery statistics display
+       */
+      updateGalleryStats() {
+        // Use stats passed from Python backend
+        {% if stats %}
+        document.getElementById('fileCount').textContent = {{ stats.file_count }};
+        document.getElementById('folderCount').textContent = {{ stats.folder_count }};
+        document.getElementById('totalSize').textContent = '{{ stats.total_size }}';
+        {% else %}
+        // Fallback: count from DOM if stats not available
+        const gridItems = document.querySelectorAll('.grid-item');
+        const subdirLinks = document.querySelectorAll('a[href$="/index.html"]');
+        
+        document.getElementById('fileCount').textContent = gridItems.length;
+        document.getElementById('folderCount').textContent = subdirLinks.length;
+        document.getElementById('totalSize').textContent = 'Unknown';
+        {% endif %}
+        
+        // Set last updated time
+        const now = new Date();
+        const timeStr = now.toLocaleTimeString([], { 
+          hour: '2-digit', 
+          minute: '2-digit' 
+        });
+        document.getElementById('lastUpdated').textContent = timeStr;
+      }
+
+      /**
+       * Calculate approximate total size of displayed files
+       */
+      async calculateApproximateSize() {
+        const images = document.querySelectorAll('.grid-item img');
+        let totalSize = 0;
+        let loadedCount = 0;
+        
+        const sizeElement = document.getElementById('totalSize');
+        sizeElement.textContent = 'Loading...';
+        
+        // Estimate size based on a sample of images
+        const sampleSize = Math.min(images.length, 5);
+        const sampleImages = Array.from(images).slice(0, sampleSize);
+        
+        if (sampleImages.length === 0) {
+          sizeElement.textContent = '0 KB';
+          return;
+        }
+        
+        // Calculate average size from sample
+        for (const img of sampleImages) {
+          try {
+            const response = await fetch(img.src, { method: 'HEAD' });
+            const size = parseInt(response.headers.get('content-length') || '0');
+            if (size > 0) {
+              totalSize += size;
+              loadedCount++;
+            }
+          } catch (e) {
+            // Fallback: estimate 100KB per image
+            totalSize += 102400;
+            loadedCount++;
+          }
+        }
+        
+        if (loadedCount > 0) {
+          const averageSize = totalSize / loadedCount;
+          const estimatedTotal = averageSize * images.length;
+          sizeElement.textContent = this.formatFileSize(estimatedTotal);
+        } else {
+          sizeElement.textContent = 'Unknown';
+        }
+      }
+
+      /**
+       * Format file size in human readable format
+       */
+      formatFileSize(bytes) {
+        if (bytes === 0) return '0 B';
+        const k = 1024;
+        const sizes = ['B', 'KB', 'MB', 'GB'];
+        const i = Math.floor(Math.log(bytes) / Math.log(k));
+        return parseFloat((bytes / Math.pow(k, i)).toFixed(1)) + ' ' + sizes[i];
+      }
+
       /**
        * Initialize keyboard shortcuts
        */
@@ -1199,76 +1510,6 @@
           }, 3000);
         }
       }
-
-      /**
-       * Navigate to deepest content folder automatically
-       */
-      async goToContent() {
-        const contentBtn = document.getElementById('contentBtn');
-        contentBtn.disabled = true;
-        contentBtn.textContent = '🔍 Searching...';
-        
-        let currentPath = window.location.pathname;
-        let visited = new Set();
-        let deepestWithContent = currentPath;
-        
-        while (true) {
-          if (visited.has(currentPath)) break;
-          visited.add(currentPath);
-          
-          try {
-            const response = await fetch(currentPath);
-            const html = await response.text();
-            const parser = new DOMParser();
-            const doc = parser.parseFromString(html, 'text/html');
-            
-            const items = doc.querySelectorAll('.grid-item');
-            const subdirs = doc.querySelectorAll('h2 + ul li a');
-            
-            if (items.length > 0) {
-              deepestWithContent = currentPath;
-            }
-            
-            if (subdirs.length === 1) {
-              const nextPath = subdirs[0].getAttribute('href');
-              if (nextPath) {
-                const baseUrl = currentPath.replace(/\/[^\/]*$/, '/');
-                currentPath = baseUrl + nextPath;
-              } else {
-                break;
-              }
-            } else {
-              break;
-            }
-          } catch (error) {
-            console.error('Error fetching:', error);
-            break;
-          }
-        }
-        
-        if (deepestWithContent !== window.location.pathname) {
-          window.location.href = deepestWithContent;
-        } else {
-          contentBtn.textContent = '✓ Already at content';
-          setTimeout(() => {
-            contentBtn.disabled = false;
-            contentBtn.textContent = '🎯 Go to Content';
-          }, 2000);
-        }
-      }
-
-      /**
-       * Hide 'Go to Content' button if not needed
-       */
-      hideContentButtonIfNeeded() {
-        const items = document.querySelectorAll('.grid-item');
-        const subdirs = document.querySelectorAll('h2 + ul li a');
-        const contentBtn = document.getElementById('contentBtn');
-        
-        if (items.length > 0 && subdirs.length === 0) {
-          contentBtn.style.display = 'none';
-        }
-      }
     }
 
     // ========================================
@@ -1279,7 +1520,6 @@
     function toggleTheme() { app.toggleTheme(); }
     function toggleSidebar() { app.toggleSidebar(); }
     function refreshGallery() { app.refreshGallery(); }
-    function goToContent() { app.goToContent(); }
 
     // ========================================
     // INITIALIZE APPLICATION