Add bulk selection functionality for filter options in admin templates

Web/app.py

@@ -713,6 +713,42 @@ def sanitize_form_value(value):
     return value
 
 
+FILTER_SELECT_ALL_TOKEN = '__ALL__'
+
+
+def expand_filter_selection(selected_values, filter_num):
+    """Expand special filter token into all predefined values for a filter."""
+    if not isinstance(selected_values, list):
+        return []
+
+    has_select_all = False
+    cleaned_values = []
+    seen = set()
+
+    for raw_value in selected_values:
+        value = str(raw_value).strip() if raw_value is not None else ''
+        if not value:
+            continue
+        if value == FILTER_SELECT_ALL_TOKEN:
+            has_select_all = True
+            continue
+        if value not in seen:
+            cleaned_values.append(value)
+            seen.add(value)
+
+    if not has_select_all:
+        return cleaned_values
+
+    predefined_values = it.get_predefined_filter_values(filter_num)
+    for predefined_value in predefined_values:
+        value = str(predefined_value).strip() if predefined_value is not None else ''
+        if value and value not in seen:
+            cleaned_values.append(value)
+            seen.add(value)
+
+    return cleaned_values
+
+
 def normalize_isbn(isbn_raw):
     """Return only digits/X from ISBN input in canonical uppercase form."""
     if isbn_raw is None:
@@ -2638,6 +2674,10 @@ def upload_item():
             flash('Fehler beim Verarbeiten der Formulardaten. Bitte versuchen Sie es erneut.', 'error')
             return redirect(url_for('home_admin'))
 
+    # Expand special "all values" selections for predefined filters.
+    filter_upload = expand_filter_selection(filter_upload, 1)
+    filter_upload2 = expand_filter_selection(filter_upload2, 2)
+
     # Validation
     if not name or not ort or not beschreibung:
         error_msg = 'Bitte füllen Sie alle erforderlichen Felder aus'
@@ -3683,6 +3723,10 @@ def edit_item(id):
     filter1 = sanitize_form_value(request.form.getlist('filter'))
     filter2 = sanitize_form_value(request.form.getlist('filter2'))
     filter3 = sanitize_form_value(request.form.getlist('filter3'))
+
+    # Expand special "all values" selections for predefined filters.
+    filter1 = expand_filter_selection(filter1, 1)
+    filter2 = expand_filter_selection(filter2, 2)
     
     anschaffungs_jahr = sanitize_form_value(request.form.get('anschaffungsjahr'))
     anschaffungs_kosten = sanitize_form_value(request.form.get('anschaffungskosten'))
@@ -5906,6 +5950,10 @@ def add_filter_value(filter_num):
     if not value:
         flash('Bitte geben Sie einen Wert ein', 'error')
         return redirect(url_for('manage_filters'))
+
+    if value == FILTER_SELECT_ALL_TOKEN:
+        flash('Dieser Wert ist reserviert und kann nicht als Filterwert gespeichert werden.', 'error')
+        return redirect(url_for('manage_filters'))
     
     # Add the value to the filter
     success = it.add_predefined_filter_value(filter_num, value)

Web/templates/main.html

@@ -1923,6 +1923,42 @@
         applyFilters();
     }
 
+    function bulkToggleFilterOptions(filterNum, shouldSelect) {
+        const filterKey = `filter${filterNum}`;
+        const checkboxes = Array.from(document.querySelectorAll(`#filter${filterNum}-options input[type="checkbox"]`));
+        if (checkboxes.length === 0) {
+            return;
+        }
+
+        const nextValues = new Set(activeFilters[filterKey]);
+
+        checkboxes.forEach(checkbox => {
+            const value = checkbox.value;
+            const group = checkbox.dataset.group || '';
+            const filterValue = group ? `${group}:${value}` : value;
+            checkbox.checked = shouldSelect;
+
+            if (shouldSelect) {
+                nextValues.add(filterValue);
+            } else {
+                nextValues.delete(filterValue);
+            }
+        });
+
+        activeFilters[filterKey] = Array.from(nextValues);
+        updateSelectedFilters(filterNum);
+
+        if (filterNum === 1) {
+            rebuildFilter2Options();
+            rebuildFilter3Options();
+        } else if (filterNum === 2) {
+            rebuildFilter3Options();
+        }
+
+        saveFilterState();
+        applyFilters();
+    }
+
     function populateFilterOptions(containerId, filterValues, filterNum) {
         const container = document.getElementById(containerId);
         if (!container) {
@@ -1932,6 +1968,27 @@
         
         container.innerHTML = ''; // Clear previous options
         
+        const bulkActions = document.createElement('div');
+        bulkActions.style.display = 'flex';
+        bulkActions.style.gap = '8px';
+        bulkActions.style.marginBottom = '10px';
+
+        const selectAllBtn = document.createElement('button');
+        selectAllBtn.type = 'button';
+        selectAllBtn.className = 'clear-filter';
+        selectAllBtn.textContent = 'Alle wählen';
+        selectAllBtn.onclick = () => bulkToggleFilterOptions(filterNum, true);
+
+        const clearAllBtn = document.createElement('button');
+        clearAllBtn.type = 'button';
+        clearAllBtn.className = 'clear-filter';
+        clearAllBtn.textContent = 'Alle abwählen';
+        clearAllBtn.onclick = () => bulkToggleFilterOptions(filterNum, false);
+
+        bulkActions.appendChild(selectAllBtn);
+        bulkActions.appendChild(clearAllBtn);
+        container.appendChild(bulkActions);
+
         // First group values by category/prefix if they exist
         const groupedValues = {};
         

Web/templates/main_admin.html

@@ -2847,6 +2847,11 @@ document.addEventListener('DOMContentLoaded', ()=>{
                         while (select.children.length > 1) {
                             select.removeChild(select.lastChild);
                         }
+
+                        const allOption = document.createElement('option');
+                        allOption.value = '__ALL__';
+                        allOption.textContent = '-- Alle auswählen --';
+                        select.appendChild(allOption);
                         
                         // Add new options - data.values contains the array
                         data.values.forEach(filter => {
@@ -4401,6 +4406,42 @@ document.addEventListener('DOMContentLoaded', ()=>{
         applyFilters();
     }
 
+    function bulkToggleFilterOptions(filterNum, shouldSelect) {
+        const filterKey = `filter${filterNum}`;
+        const checkboxes = Array.from(document.querySelectorAll(`#filter${filterNum}-options input[type="checkbox"]`));
+        if (checkboxes.length === 0) {
+            return;
+        }
+
+        const nextValues = new Set(activeFilters[filterKey]);
+
+        checkboxes.forEach(checkbox => {
+            const value = checkbox.value;
+            const group = checkbox.dataset.group || '';
+            const filterValue = group ? `${group}:${value}` : value;
+            checkbox.checked = shouldSelect;
+
+            if (shouldSelect) {
+                nextValues.add(filterValue);
+            } else {
+                nextValues.delete(filterValue);
+            }
+        });
+
+        activeFilters[filterKey] = Array.from(nextValues);
+        updateSelectedFiltersDisplay(filterNum);
+
+        if (filterNum === 1) {
+            rebuildFilter2Options();
+            rebuildFilter3Options();
+        } else if (filterNum === 2) {
+            rebuildFilter3Options();
+        }
+
+        saveFilterState();
+        applyFilters();
+    }
+
     function populateFilterOptions(containerId, filterValues, filterNum) {
         const container = document.getElementById(containerId);
         if (!container) {
@@ -4408,6 +4449,27 @@ document.addEventListener('DOMContentLoaded', ()=>{
         }
         
         container.innerHTML = '';
+
+        const bulkActions = document.createElement('div');
+        bulkActions.style.display = 'flex';
+        bulkActions.style.gap = '8px';
+        bulkActions.style.marginBottom = '10px';
+
+        const selectAllBtn = document.createElement('button');
+        selectAllBtn.type = 'button';
+        selectAllBtn.className = 'clear-filter';
+        selectAllBtn.textContent = 'Alle wählen';
+        selectAllBtn.onclick = () => bulkToggleFilterOptions(filterNum, true);
+
+        const clearAllBtn = document.createElement('button');
+        clearAllBtn.type = 'button';
+        clearAllBtn.className = 'clear-filter';
+        clearAllBtn.textContent = 'Alle abwählen';
+        clearAllBtn.onclick = () => bulkToggleFilterOptions(filterNum, false);
+
+        bulkActions.appendChild(selectAllBtn);
+        bulkActions.appendChild(clearAllBtn);
+        container.appendChild(bulkActions);
         
         const groupedValues = {};
         

Web/templates/upload_admin.html

@@ -1114,9 +1114,17 @@
                         while (select.children.length > 1) {
                             select.removeChild(select.lastChild);
                         }
+
+                        const allOption = document.createElement('option');
+                        allOption.value = '__ALL__';
+                        allOption.textContent = '-- Alle auswählen --';
+                        select.appendChild(allOption);
                         
                         // Add new options - data.values contains the array
                         data.values.forEach(value => {
+                            if (!value || String(value).trim() === '') {
+                                return;
+                            }
                             const option = document.createElement('option');
                             option.value = value;
                             option.textContent = value;