Add visual IconSelect selectors for effect, palette, gradient, waveform dropdowns

Replace plain <select> dropdowns with rich visual selectors:
- Effect type: icon grid with descriptions
- Effect/audio palette: gradient strip previews from color data
- Gradient preset: gradient strip previews (13 presets)
- Audio visualization: icon grid with descriptions
- Notification effect: icon grid with descriptions
- Waveform (value source): inline SVG shape previews

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/js/features/color-strips.js

@@ -14,6 +14,7 @@ import {
     ICON_AUDIO_LOOPBACK, ICON_TIMER, ICON_LINK_SOURCE, ICON_FILM,
     ICON_LINK, ICON_SPARKLES, ICON_ACTIVITY, ICON_CLOCK, ICON_BELL,
 } from '../core/icons.js';
+import * as P from '../core/icon-paths.js';
 import { wrapCard } from '../core/card-colors.js';
 import { attachProcessPicker } from '../core/process-picker.js';
 import { IconSelect } from '../core/icon-select.js';
@@ -128,8 +129,18 @@ export function onCSSTypeChange() {
     document.getElementById('css-editor-api-input-section').style.display = type === 'api_input' ? '' : 'none';
     document.getElementById('css-editor-notification-section').style.display = type === 'notification' ? '' : 'none';
 
-    if (type === 'effect') onEffectTypeChange();
+    if (type === 'effect') {
-    if (type === 'audio') onAudioVizChange();
+        _ensureEffectTypeIconSelect();
+        _ensureEffectPaletteIconSelect();
+        onEffectTypeChange();
+    }
+    if (type === 'audio') {
+        _ensureAudioVizIconSelect();
+        _ensureAudioPaletteIconSelect();
+        onAudioVizChange();
+    }
+    if (type === 'gradient') _ensureGradientPresetIconSelect();
+    if (type === 'notification') _ensureNotificationEffectIconSelect();
 
     // Animation section — shown for static/gradient only
     const animSection = document.getElementById('css-editor-animation-section');
@@ -240,6 +251,110 @@ function _syncAnimationSpeedState() {
     }
 }
 
+/* ── Gradient strip preview helper ────────────────────────────── */
+
+/**
+ * Build a small inline CSS gradient preview from palette color points.
+ * @param {Array<[number, string]>} pts  – [[position, 'r,g,b'], ...]
+ * @param {number} [w=80] width in px
+ * @param {number} [h=16] height in px
+ * @returns {string} HTML string
+ */
+function _gradientStripHTML(pts, w = 80, h = 16) {
+    const stops = pts.map(([pos, rgb]) => `rgb(${rgb}) ${(pos * 100).toFixed(0)}%`).join(', ');
+    return `<span style="display:inline-block;width:${w}px;height:${h}px;border-radius:3px;background:linear-gradient(to right,${stops});flex-shrink:0"></span>`;
+}
+
+/**
+ * Build a gradient preview from _GRADIENT_PRESETS entry (array of {position, color:[r,g,b]}).
+ */
+function _gradientPresetStripHTML(stops, w = 80, h = 16) {
+    const css = stops.map(s => `rgb(${s.color.join(',')}) ${(s.position * 100).toFixed(0)}%`).join(', ');
+    return `<span style="display:inline-block;width:${w}px;height:${h}px;border-radius:3px;background:linear-gradient(to right,${css});flex-shrink:0"></span>`;
+}
+
+/* ── Effect / audio palette IconSelect instances ─────────────── */
+
+let _effectTypeIconSelect = null;
+let _effectPaletteIconSelect = null;
+let _audioPaletteIconSelect = null;
+let _audioVizIconSelect = null;
+let _gradientPresetIconSelect = null;
+let _notificationEffectIconSelect = null;
+
+const _icon = (d) => `<svg class="icon" viewBox="0 0 24 24">${d}</svg>`;
+
+function _ensureEffectTypeIconSelect() {
+    const sel = document.getElementById('css-editor-effect-type');
+    if (!sel) return;
+    const items = [
+        { value: 'fire',    icon: _icon(P.zap),      label: t('color_strip.effect.fire'),    desc: t('color_strip.effect.fire.desc') },
+        { value: 'meteor',  icon: _icon(P.sparkles),  label: t('color_strip.effect.meteor'),  desc: t('color_strip.effect.meteor.desc') },
+        { value: 'plasma',  icon: _icon(P.rainbow),   label: t('color_strip.effect.plasma'),  desc: t('color_strip.effect.plasma.desc') },
+        { value: 'noise',   icon: _icon(P.activity),  label: t('color_strip.effect.noise'),   desc: t('color_strip.effect.noise.desc') },
+        { value: 'aurora',  icon: _icon(P.sparkles),  label: t('color_strip.effect.aurora'),  desc: t('color_strip.effect.aurora.desc') },
+    ];
+    if (_effectTypeIconSelect) { _effectTypeIconSelect.updateItems(items); return; }
+    _effectTypeIconSelect = new IconSelect({ target: sel, items, columns: 2 });
+}
+
+function _ensureEffectPaletteIconSelect() {
+    const sel = document.getElementById('css-editor-effect-palette');
+    if (!sel) return;
+    const items = Object.entries(_PALETTE_COLORS).map(([key, pts]) => ({
+        value: key, icon: _gradientStripHTML(pts), label: t(`color_strip.palette.${key}`),
+    }));
+    if (_effectPaletteIconSelect) { _effectPaletteIconSelect.updateItems(items); return; }
+    _effectPaletteIconSelect = new IconSelect({ target: sel, items, columns: 2 });
+}
+
+function _ensureAudioPaletteIconSelect() {
+    const sel = document.getElementById('css-editor-audio-palette');
+    if (!sel) return;
+    const items = Object.entries(_PALETTE_COLORS).map(([key, pts]) => ({
+        value: key, icon: _gradientStripHTML(pts), label: t(`color_strip.palette.${key}`),
+    }));
+    if (_audioPaletteIconSelect) { _audioPaletteIconSelect.updateItems(items); return; }
+    _audioPaletteIconSelect = new IconSelect({ target: sel, items, columns: 2 });
+}
+
+function _ensureAudioVizIconSelect() {
+    const sel = document.getElementById('css-editor-audio-viz');
+    if (!sel) return;
+    const items = [
+        { value: 'spectrum',   icon: _icon(P.activity),   label: t('color_strip.audio.viz.spectrum'),   desc: t('color_strip.audio.viz.spectrum.desc') },
+        { value: 'beat_pulse', icon: _icon(P.zap),        label: t('color_strip.audio.viz.beat_pulse'), desc: t('color_strip.audio.viz.beat_pulse.desc') },
+        { value: 'vu_meter',   icon: _icon(P.trendingUp), label: t('color_strip.audio.viz.vu_meter'),   desc: t('color_strip.audio.viz.vu_meter.desc') },
+    ];
+    if (_audioVizIconSelect) { _audioVizIconSelect.updateItems(items); return; }
+    _audioVizIconSelect = new IconSelect({ target: sel, items, columns: 3 });
+}
+
+function _ensureGradientPresetIconSelect() {
+    const sel = document.getElementById('css-editor-gradient-preset');
+    if (!sel) return;
+    const items = [
+        { value: '', icon: _icon(P.palette), label: t('color_strip.gradient.preset.custom') },
+        ...Object.entries(_GRADIENT_PRESETS).map(([key, stops]) => ({
+            value: key, icon: _gradientPresetStripHTML(stops), label: t(`color_strip.gradient.preset.${key}`),
+        })),
+    ];
+    if (_gradientPresetIconSelect) { _gradientPresetIconSelect.updateItems(items); return; }
+    _gradientPresetIconSelect = new IconSelect({ target: sel, items, columns: 3 });
+}
+
+function _ensureNotificationEffectIconSelect() {
+    const sel = document.getElementById('css-editor-notification-effect');
+    if (!sel) return;
+    const items = [
+        { value: 'flash', icon: _icon(P.zap),         label: t('color_strip.notification.effect.flash'), desc: t('color_strip.notification.effect.flash.desc') },
+        { value: 'pulse', icon: _icon(P.activity),     label: t('color_strip.notification.effect.pulse'), desc: t('color_strip.notification.effect.pulse.desc') },
+        { value: 'sweep', icon: _icon(P.fastForward),  label: t('color_strip.notification.effect.sweep'), desc: t('color_strip.notification.effect.sweep.desc') },
+    ];
+    if (_notificationEffectIconSelect) { _notificationEffectIconSelect.updateItems(items); return; }
+    _notificationEffectIconSelect = new IconSelect({ target: sel, items, columns: 3 });
+}
+
 /* ── Effect type helpers ──────────────────────────────────────── */
 
 // Palette color control points — mirrors _PALETTE_DEFS in effect_stream.py
@@ -623,6 +738,7 @@ async function _loadAudioSources() {
 
 function _loadAudioState(css) {
     document.getElementById('css-editor-audio-viz').value = css.visualization_mode || 'spectrum';
+    if (_audioVizIconSelect) _audioVizIconSelect.setValue(css.visualization_mode || 'spectrum');
     onAudioVizChange();
 
     const sensitivity = css.sensitivity ?? 1.0;
@@ -634,6 +750,7 @@ function _loadAudioState(css) {
     document.getElementById('css-editor-audio-smoothing-val').textContent = parseFloat(smoothing).toFixed(2);
 
     document.getElementById('css-editor-audio-palette').value = css.palette || 'rainbow';
+    if (_audioPaletteIconSelect) _audioPaletteIconSelect.setValue(css.palette || 'rainbow');
     document.getElementById('css-editor-audio-color').value = rgbArrayToHex(css.color || [0, 255, 0]);
     document.getElementById('css-editor-audio-color-peak').value = rgbArrayToHex(css.color_peak || [255, 0, 0]);
     document.getElementById('css-editor-audio-mirror').checked = css.mirror || false;
@@ -647,11 +764,13 @@ function _loadAudioState(css) {
 
 function _resetAudioState() {
     document.getElementById('css-editor-audio-viz').value = 'spectrum';
+    if (_audioVizIconSelect) _audioVizIconSelect.setValue('spectrum');
     document.getElementById('css-editor-audio-sensitivity').value = 1.0;
     document.getElementById('css-editor-audio-sensitivity-val').textContent = '1.0';
     document.getElementById('css-editor-audio-smoothing').value = 0.3;
     document.getElementById('css-editor-audio-smoothing-val').textContent = '0.30';
     document.getElementById('css-editor-audio-palette').value = 'rainbow';
+    if (_audioPaletteIconSelect) _audioPaletteIconSelect.setValue('rainbow');
     document.getElementById('css-editor-audio-color').value = '#00ff00';
     document.getElementById('css-editor-audio-color-peak').value = '#ff0000';
     document.getElementById('css-editor-audio-mirror').checked = false;
@@ -715,6 +834,7 @@ function _notificationGetAppColorsDict() {
 
 function _loadNotificationState(css) {
     document.getElementById('css-editor-notification-effect').value = css.notification_effect || 'flash';
+    if (_notificationEffectIconSelect) _notificationEffectIconSelect.setValue(css.notification_effect || 'flash');
     const dur = css.duration_ms ?? 1500;
     document.getElementById('css-editor-notification-duration').value = dur;
     document.getElementById('css-editor-notification-duration-val').textContent = dur;
@@ -734,6 +854,7 @@ function _loadNotificationState(css) {
 
 function _resetNotificationState() {
     document.getElementById('css-editor-notification-effect').value = 'flash';
+    if (_notificationEffectIconSelect) _notificationEffectIconSelect.setValue('flash');
     document.getElementById('css-editor-notification-duration').value = 1500;
     document.getElementById('css-editor-notification-duration-val').textContent = '1500';
     document.getElementById('css-editor-notification-default-color').value = '#ffffff';
@@ -993,6 +1114,7 @@ export async function showCSSEditor(cssId = null, cloneData = null) {
                 _loadColorCycleState(css);
             } else if (sourceType === 'gradient') {
                 document.getElementById('css-editor-gradient-preset').value = '';
+                if (_gradientPresetIconSelect) _gradientPresetIconSelect.setValue('');
                 gradientInit(css.stops || [
                     { position: 0.0, color: [255, 0, 0] },
                     { position: 1.0, color: [0, 0, 255] },
@@ -1000,8 +1122,10 @@ export async function showCSSEditor(cssId = null, cloneData = null) {
                 _loadAnimationState(css.animation);
             } else if (sourceType === 'effect') {
                 document.getElementById('css-editor-effect-type').value = css.effect_type || 'fire';
+                if (_effectTypeIconSelect) _effectTypeIconSelect.setValue(css.effect_type || 'fire');
                 onEffectTypeChange();
                 document.getElementById('css-editor-effect-palette').value = css.palette || 'fire';
+                if (_effectPaletteIconSelect) _effectPaletteIconSelect.setValue(css.palette || 'fire');
                 document.getElementById('css-editor-effect-color').value = rgbArrayToHex(css.color || [255, 80, 0]);
                 document.getElementById('css-editor-effect-intensity').value = css.intensity ?? 1.0;
                 document.getElementById('css-editor-effect-intensity-val').textContent = parseFloat(css.intensity ?? 1.0).toFixed(1);

server/src/wled_controller/static/js/features/value-sources.js

@@ -78,6 +78,27 @@ function _buildVSTypeItems() {
 }
 
 let _vsTypeIconSelect = null;
+let _waveformIconSelect = null;
+
+const _WAVEFORM_SVG = {
+    sine:     '<svg viewBox="0 0 60 24" width="60" height="24" fill="none" stroke="currentColor" stroke-width="2"><path d="M0 12 Q15 -4 30 12 Q45 28 60 12"/></svg>',
+    triangle: '<svg viewBox="0 0 60 24" width="60" height="24" fill="none" stroke="currentColor" stroke-width="2"><path d="M0 12 L15 2 L45 22 L60 12"/></svg>',
+    square:   '<svg viewBox="0 0 60 24" width="60" height="24" fill="none" stroke="currentColor" stroke-width="2"><path d="M0 20 L0 4 L30 4 L30 20 L60 20 L60 4"/></svg>',
+    sawtooth: '<svg viewBox="0 0 60 24" width="60" height="24" fill="none" stroke="currentColor" stroke-width="2"><path d="M0 20 L30 4 L30 20 L60 4"/></svg>',
+};
+
+function _ensureWaveformIconSelect() {
+    const sel = document.getElementById('value-source-waveform');
+    if (!sel) return;
+    const items = [
+        { value: 'sine',     icon: _WAVEFORM_SVG.sine,     label: t('value_source.waveform.sine') },
+        { value: 'triangle', icon: _WAVEFORM_SVG.triangle, label: t('value_source.waveform.triangle') },
+        { value: 'square',   icon: _WAVEFORM_SVG.square,   label: t('value_source.waveform.square') },
+        { value: 'sawtooth', icon: _WAVEFORM_SVG.sawtooth, label: t('value_source.waveform.sawtooth') },
+    ];
+    if (_waveformIconSelect) { _waveformIconSelect.updateItems(items); return; }
+    _waveformIconSelect = new IconSelect({ target: sel, items, columns: 4 });
+}
 
 function _ensureVSTypeIconSelect() {
     const sel = document.getElementById('value-source-type');
@@ -111,6 +132,7 @@ export async function showValueSourceModal(editData) {
             _setSlider('value-source-value', editData.value ?? 1.0);
         } else if (editData.source_type === 'animated') {
             document.getElementById('value-source-waveform').value = editData.waveform || 'sine';
+            if (_waveformIconSelect) _waveformIconSelect.setValue(editData.waveform || 'sine');
             _setSlider('value-source-speed', editData.speed ?? 10);
             _setSlider('value-source-min-value', editData.min_value ?? 0);
             _setSlider('value-source-max-value', editData.max_value ?? 1);
@@ -174,6 +196,7 @@ export function onValueSourceTypeChange() {
     if (_vsTypeIconSelect) _vsTypeIconSelect.setValue(type);
     document.getElementById('value-source-static-section').style.display = type === 'static' ? '' : 'none';
     document.getElementById('value-source-animated-section').style.display = type === 'animated' ? '' : 'none';
+    if (type === 'animated') _ensureWaveformIconSelect();
     document.getElementById('value-source-audio-section').style.display = type === 'audio' ? '' : 'none';
     document.getElementById('value-source-adaptive-time-section').style.display = type === 'adaptive_time' ? '' : 'none';
     document.getElementById('value-source-adaptive-scene-section').style.display = type === 'adaptive_scene' ? '' : 'none';

server/src/wled_controller/static/locales/en.json

@@ -840,8 +840,11 @@
   "color_strip.notification.effect": "Effect:",
   "color_strip.notification.effect.hint": "Visual effect when a notification fires. Flash fades linearly, Pulse uses a smooth bell curve, Sweep fills LEDs left-to-right then fades.",
   "color_strip.notification.effect.flash": "Flash",
+  "color_strip.notification.effect.flash.desc": "Instant on, linear fade-out",
   "color_strip.notification.effect.pulse": "Pulse",
+  "color_strip.notification.effect.pulse.desc": "Smooth bell-curve glow",
   "color_strip.notification.effect.sweep": "Sweep",
+  "color_strip.notification.effect.sweep.desc": "Fills left-to-right then fades",
   "color_strip.notification.duration": "Duration (ms):",
   "color_strip.notification.duration.hint": "How long the notification effect plays, in milliseconds.",
   "color_strip.notification.default_color": "Default Color:",
@@ -888,8 +891,11 @@
   "color_strip.audio.visualization": "Visualization:",
   "color_strip.audio.visualization.hint": "How audio data is rendered to LEDs.",
   "color_strip.audio.viz.spectrum": "Spectrum Analyzer",
+  "color_strip.audio.viz.spectrum.desc": "Frequency bars across the strip",
   "color_strip.audio.viz.beat_pulse": "Beat Pulse",
+  "color_strip.audio.viz.beat_pulse.desc": "All LEDs pulse on the beat",
   "color_strip.audio.viz.vu_meter": "VU Meter",
+  "color_strip.audio.viz.vu_meter.desc": "Volume level fills the strip",
   "color_strip.audio.source": "Audio Source:",
   "color_strip.audio.source.hint": "Audio source for this visualization. Can be a multichannel (device) or mono (single channel) source. Create and manage audio sources in the Sources tab.",
   "color_strip.audio.sensitivity": "Sensitivity:",

server/src/wled_controller/static/locales/ru.json

@@ -840,8 +840,11 @@
   "color_strip.notification.effect": "Эффект:",
   "color_strip.notification.effect.hint": "Визуальный эффект при уведомлении. Вспышка — линейное затухание, Пульс — плавная волна, Волна — заполнение и затухание.",
   "color_strip.notification.effect.flash": "Вспышка",
+  "color_strip.notification.effect.flash.desc": "Мгновенное включение, линейное затухание",
   "color_strip.notification.effect.pulse": "Пульс",
+  "color_strip.notification.effect.pulse.desc": "Плавное свечение колоколом",
   "color_strip.notification.effect.sweep": "Волна",
+  "color_strip.notification.effect.sweep.desc": "Заполняет слева направо, затем гаснет",
   "color_strip.notification.duration": "Длительность (мс):",
   "color_strip.notification.duration.hint": "Как долго длится эффект уведомления в миллисекундах.",
   "color_strip.notification.default_color": "Цвет по умолчанию:",
@@ -888,8 +891,11 @@
   "color_strip.audio.visualization": "Визуализация:",
   "color_strip.audio.visualization.hint": "Способ отображения аудиоданных на LED.",
   "color_strip.audio.viz.spectrum": "Анализатор спектра",
+  "color_strip.audio.viz.spectrum.desc": "Частотные полосы по ленте",
   "color_strip.audio.viz.beat_pulse": "Пульс бита",
+  "color_strip.audio.viz.beat_pulse.desc": "Все LED пульсируют в такт",
   "color_strip.audio.viz.vu_meter": "VU-метр",
+  "color_strip.audio.viz.vu_meter.desc": "Уровень громкости заполняет ленту",
   "color_strip.audio.source": "Аудиоисточник:",
   "color_strip.audio.source.hint": "Аудиоисточник для визуализации. Может быть многоканальным (устройство) или моно (один канал). Создавайте и управляйте аудиоисточниками на вкладке Источники.",
   "color_strip.audio.sensitivity": "Чувствительность:",

server/src/wled_controller/static/locales/zh.json

@@ -840,8 +840,11 @@
   "color_strip.notification.effect": "效果：",
   "color_strip.notification.effect.hint": "通知触发时的视觉效果。闪烁线性衰减，脉冲平滑钟形曲线，扫描从左到右填充后衰减。",
   "color_strip.notification.effect.flash": "闪烁",
+  "color_strip.notification.effect.flash.desc": "瞬时点亮，线性衰减",
   "color_strip.notification.effect.pulse": "脉冲",
+  "color_strip.notification.effect.pulse.desc": "平滑钟形发光",
   "color_strip.notification.effect.sweep": "扫描",
+  "color_strip.notification.effect.sweep.desc": "从左到右填充然后消失",
   "color_strip.notification.duration": "持续时间（毫秒）：",
   "color_strip.notification.duration.hint": "通知效果播放的时长（毫秒）。",
   "color_strip.notification.default_color": "默认颜色：",
@@ -888,8 +891,11 @@
   "color_strip.audio.visualization": "可视化：",
   "color_strip.audio.visualization.hint": "音频数据如何渲染到 LED。",
   "color_strip.audio.viz.spectrum": "频谱分析",
+  "color_strip.audio.viz.spectrum.desc": "频率条分布在灯带上",
   "color_strip.audio.viz.beat_pulse": "节拍脉冲",
+  "color_strip.audio.viz.beat_pulse.desc": "所有LED随节拍脉动",
   "color_strip.audio.viz.vu_meter": "VU 表",
+  "color_strip.audio.viz.vu_meter.desc": "音量填充灯带",
   "color_strip.audio.source": "音频源：",
   "color_strip.audio.source.hint": "此可视化的音频源。可以是多声道（设备）或单声道（单通道）源。在源标签页中创建和管理音频源。",
   "color_strip.audio.sensitivity": "灵敏度：",

server/src/wled_controller/static/sw.js

@@ -7,7 +7,7 @@
  *   - Navigation: network-first with offline fallback
  */
 
-const CACHE_NAME = 'ledgrab-v18';
+const CACHE_NAME = 'ledgrab-v19';
 
 // Only pre-cache static assets (no auth required).
 // Do NOT pre-cache '/' — it requires API key auth and would cache an error page.