docs: add frontend UI architecture and ComfyUI widget guidelines

- Document dual UI systems: standalone web UI and ComfyUI custom node widgets - Add ComfyUI widget development guidelines including styling and constraints - Update terminology in LoraRandomizerNode from 'frontend/backend' to 'fixed/always' for clarity - Include UI constraints for ComfyUI widgets: minimize vertical space, avoid dynamic height changes, keep UI simple
2026-03-25 07:05:43 -03:00 · 2026-01-13 11:20:50 +08:00
parent bce6b0e610
commit 6a17e75782
16 changed files with 877 additions and 244 deletions
--- a/vue-widgets/src/components/LoraRandomizerWidget.vue
+++ b/vue-widgets/src/components/LoraRandomizerWidget.vue
@@ -13,6 +13,9 @@
      :roll-mode="state.rollMode.value"
      :is-rolling="state.isRolling.value"
      :is-clip-strength-disabled="state.isClipStrengthDisabled.value"
+      :last-used="state.lastUsed.value"
+      :current-loras="currentLoras"
+      :can-reuse-last="canReuseLast"
      @update:count-mode="state.countMode.value = $event"
      @update:count-fixed="state.countFixed.value = $event"
      @update:count-min="state.countMin.value = $event"
@@ -23,13 +26,15 @@
      @update:clip-strength-min="state.clipStrengthMin.value = $event"
      @update:clip-strength-max="state.clipStrengthMax.value = $event"
      @update:roll-mode="state.rollMode.value = $event"
-      @roll="handleRoll"
+      @generate-fixed="handleGenerateFixed"
+      @always-randomize="handleAlwaysRandomize"
+      @reuse-last="handleReuseLast"
    />
  </div>
 </template>

 <script setup lang="ts">
-import { onMounted } from 'vue'
+import { onMounted, computed, ref, watch } from 'vue'
 import LoraRandomizerSettingsView from './lora-randomizer/LoraRandomizerSettingsView.vue'
 import { useLoraRandomizerState } from '../composables/useLoraRandomizerState'
 import type { ComponentWidget, RandomizerConfig, LoraEntry } from '../composables/types'
@@ -43,11 +48,31 @@ const props = defineProps<{
 // State management
 const state = useLoraRandomizerState(props.widget)

-// Handle roll button click
-const handleRoll = async () => {
-  try {
-    console.log('[LoraRandomizerWidget] Roll button clicked')
+// Track current loras from the loras widget
+const currentLoras = ref<LoraEntry[]>([])

+// Computed property to check if we can reuse last
+const canReuseLast = computed(() => {
+  const lastUsed = state.lastUsed.value
+  if (!lastUsed || lastUsed.length === 0) return false
+  return !areLorasEqual(currentLoras.value, lastUsed)
+})
+
+// Helper function to compare two lora lists
+const areLorasEqual = (a: LoraEntry[], b: LoraEntry[]): boolean => {
+  if (a.length !== b.length) return false
+  const sortedA = [...a].sort((x, y) => x.name.localeCompare(y.name))
+  const sortedB = [...b].sort((x, y) => x.name.localeCompare(y.name))
+  return sortedA.every((lora, i) =>
+    lora.name === sortedB[i].name &&
+    lora.strength === sortedB[i].strength &&
+    lora.clipStrength === sortedB[i].clipStrength
+  )
+}
+
+// Handle "Generate Fixed" button click
+const handleGenerateFixed = async () => {
+  try {
    // Get pool config from connected pool_config input
    const poolConfig = (props.node as any).getPoolConfig?.() || null

@@ -55,46 +80,116 @@ const handleRoll = async () => {
    const lorasWidget = props.node.widgets?.find((w: any) => w.name === "loras")
    const lockedLoras: LoraEntry[] = (lorasWidget?.value || []).filter((lora: LoraEntry) => lora.locked === true)

-    console.log('[LoraRandomizerWidget] Pool config:', poolConfig)
-    console.log('[LoraRandomizerWidget] Locked loras:', lockedLoras)
+    // Call API to get random loras
+    const randomLoras = await state.rollLoras(poolConfig, lockedLoras)
+
+    // Update the loras widget with the new selection
+    if (lorasWidget) {
+      lorasWidget.value = randomLoras
+      currentLoras.value = randomLoras
+    }
+
+    // Set roll mode to fixed
+    state.rollMode.value = 'fixed'
+  } catch (error) {
+    console.error('[LoraRandomizerWidget] Error generating fixed LoRAs:', error)
+    alert('Failed to generate LoRAs: ' + (error as Error).message)
+  }
+}
+
+// Handle "Always Randomize" button click
+const handleAlwaysRandomize = async () => {
+  try {
+    // Get pool config from connected pool_config input
+    const poolConfig = (props.node as any).getPoolConfig?.() || null
+
+    // Get locked loras from the loras widget
+    const lorasWidget = props.node.widgets?.find((w: any) => w.name === "loras")
+    const lockedLoras: LoraEntry[] = (lorasWidget?.value || []).filter((lora: LoraEntry) => lora.locked === true)

    // Call API to get random loras
    const randomLoras = await state.rollLoras(poolConfig, lockedLoras)

-    console.log('[LoraRandomizerWidget] Got random LoRAs:', randomLoras)
-
    // Update the loras widget with the new selection
-    // This will be handled by emitting an event or directly updating the loras widget
-    // For now, we'll emit a custom event that the parent widget handler can catch
-    if (typeof (props.widget as any).onRoll === 'function') {
-      (props.widget as any).onRoll(randomLoras)
+    if (lorasWidget) {
+      lorasWidget.value = randomLoras
+      currentLoras.value = randomLoras
    }
+
+    // Set roll mode to always
+    state.rollMode.value = 'always'
  } catch (error) {
-    console.error('[LoraRandomizerWidget] Error rolling LoRAs:', error)
-    alert('Failed to roll LoRAs: ' + (error as Error).message)
+    console.error('[LoraRandomizerWidget] Error generating random LoRAs:', error)
+    alert('Failed to generate LoRAs: ' + (error as Error).message)
  }
 }

+// Handle "Reuse Last" button click
+const handleReuseLast = () => {
+  const lastUsedLoras = state.useLastUsed()
+  if (lastUsedLoras) {
+    // Update the loras widget with the last used combination
+    const lorasWidget = props.node.widgets?.find((w: any) => w.name === 'loras')
+    if (lorasWidget) {
+      lorasWidget.value = lastUsedLoras
+      currentLoras.value = lastUsedLoras
+    }
+
+    // Switch to fixed mode
+    state.rollMode.value = 'fixed'
+  }
+}
+
+// Watch for changes to the loras widget to track current loras
+watch(() => props.node.widgets?.find((w: any) => w.name === 'loras')?.value, (newVal) => {
+  if (newVal && Array.isArray(newVal)) {
+    currentLoras.value = newVal
+  }
+}, { immediate: true, deep: true })
+
 // Lifecycle
 onMounted(async () => {
  // Setup serialization
  props.widget.serializeValue = async () => {
    const config = state.buildConfig()
-    console.log('[LoraRandomizerWidget] Serializing config:', config)
    return config
  }

  // Handle external value updates (e.g., loading workflow, paste)
  props.widget.onSetValue = (v) => {
-    console.log('[LoraRandomizerWidget] Restoring from config:', v)
    state.restoreFromConfig(v as RandomizerConfig)
  }

  // Restore from saved value
  if (props.widget.value) {
-    console.log('[LoraRandomizerWidget] Restoring from saved value:', props.widget.value)
    state.restoreFromConfig(props.widget.value as RandomizerConfig)
  }
+
+  // Override onExecuted to handle backend UI updates
+  const originalOnExecuted = (props.node as any).onExecuted?.bind(props.node)
+
+  ;(props.node as any).onExecuted = function(output: any) {
+    console.log("[LoraRandomizerWidget] Node executed with output:", output)
+
+    // Update last_used from backend
+    if (output?.last_used !== undefined) {
+      state.lastUsed.value = output.last_used
+      console.log(`[LoraRandomizerWidget] Updated last_used: ${output.last_used ? output.last_used.length : 0} LoRAs`)
+    }
+
+    // Update loras widget if backend provided new loras
+    const lorasWidget = props.node.widgets?.find((w: any) => w.name === 'loras')
+    if (lorasWidget && output?.loras && Array.isArray(output.loras)) {
+      console.log("[LoraRandomizerWidget] Received loras data from backend:", output.loras)
+      lorasWidget.value = output.loras
+      currentLoras.value = output.loras
+    }
+
+    // Call original onExecuted if it exists
+    if (originalOnExecuted) {
+      return originalOnExecuted(output)
+    }
+  }
 })
 </script>

--- a/vue-widgets/src/components/lora-randomizer/LastUsedPreview.vue
+++ b/vue-widgets/src/components/lora-randomizer/LastUsedPreview.vue
@@ -0,0 +1,155 @@
+<template>
+  <div class="last-used-preview">
+    <div class="last-used-preview__content">
+      <div
+        v-for="lora in displayLoras"
+        :key="lora.name"
+        class="last-used-preview__item"
+      >
+        <img
+          v-if="previewUrls[lora.name]"
+          :src="previewUrls[lora.name]"
+          class="last-used-preview__thumb"
+          @error="onImageError(lora.name)"
+        />
+        <div v-else class="last-used-preview__thumb last-used-preview__thumb--placeholder">
+          <svg viewBox="0 0 16 16" fill="currentColor">
+            <path d="M6.002 5.5a1.5 1.5 0 1 1-3 0 1.5 1.5 0 0 1 3 0z"/>
+            <path d="M2.002 1a2 2 0 0 0-2 2v10a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V3a2 2 0 0 0-2-2h-12zm12 1a1 1 0 0 1 1 1v6.5l-3.777-1.947a.5.5 0 0 0-.577.093l-3.71 3.71-2.66-1.772a.5.5 0 0 0-.63.062L1.002 12V3a1 1 0 0 1 1-1h12z"/>
+          </svg>
+        </div>
+        <div class="last-used-preview__info">
+          <span class="last-used-preview__name">{{ lora.name }}</span>
+          <span class="last-used-preview__strength">
+            M: {{ lora.strength }}{{ lora.clipStrength !== undefined ? ` / C: ${lora.clipStrength}` : '' }}
+          </span>
+        </div>
+      </div>
+      <div v-if="loras.length > 5" class="last-used-preview__more">
+        +{{ (loras.length - 5).toLocaleString() }} more LoRAs
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed } from 'vue'
+import type { LoraEntry } from '../../composables/types'
+
+const props = defineProps<{
+  loras: LoraEntry[]
+}>()
+
+const displayLoras = computed(() => props.loras.slice(0, 5))
+
+// Preview URLs cache
+const previewUrls = ref<Record<string, string>>({})
+
+// Fetch preview URL for a lora using API
+const fetchPreviewUrl = async (loraName: string) => {
+  try {
+    const response = await fetch(`/api/lm/loras/preview-url?name=${encodeURIComponent(loraName)}`)
+
+    if (response.ok) {
+      const data = await response.json()
+      if (data.preview_url) {
+        previewUrls.value[loraName] = data.preview_url
+      }
+    }
+  } catch (error) {
+    // Silent fail, just use placeholder
+  }
+}
+
+// Load preview URLs on mount
+props.loras.forEach(lora => {
+  fetchPreviewUrl(lora.name)
+})
+
+const onImageError = (loraName: string) => {
+  previewUrls.value[loraName] = ''
+}
+</script>
+
+<style scoped>
+.last-used-preview {
+  position: absolute;
+  bottom: 100%;
+  right: 0;
+  margin-bottom: 8px;
+  z-index: 100;
+  width: 280px;
+}
+
+.last-used-preview__content {
+  background: var(--comfy-menu-bg, #1a1a1a);
+  border: 1px solid var(--border-color, #444);
+  border-radius: 6px;
+  padding: 8px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.last-used-preview__item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 4px 6px;
+  background: var(--comfy-input-bg, #333);
+  border-radius: 4px;
+}
+
+.last-used-preview__thumb {
+  width: 28px;
+  height: 28px;
+  object-fit: cover;
+  border-radius: 3px;
+  flex-shrink: 0;
+  background: rgba(0, 0, 0, 0.2);
+}
+
+.last-used-preview__thumb--placeholder {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--fg-color, #fff);
+  opacity: 0.2;
+}
+
+.last-used-preview__thumb--placeholder svg {
+  width: 14px;
+  height: 14px;
+}
+
+.last-used-preview__info {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 1px;
+  min-width: 0;
+}
+
+.last-used-preview__name {
+  font-size: 11px;
+  color: var(--fg-color, #fff);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.last-used-preview__strength {
+  font-size: 10px;
+  color: var(--fg-color, #fff);
+  opacity: 0.5;
+}
+
+.last-used-preview__more {
+  font-size: 11px;
+  color: var(--fg-color, #fff);
+  opacity: 0.5;
+  text-align: center;
+  padding: 4px;
+}
+</style>
--- a/vue-widgets/src/components/lora-randomizer/LoraRandomizerSettingsView.vue
+++ b/vue-widgets/src/components/lora-randomizer/LoraRandomizerSettingsView.vue
@@ -135,48 +135,73 @@
      </div>
    </div>

-    <!-- Roll Mode -->
+    <!-- Roll Mode - New 3-button design -->
    <div class="setting-section">
      <label class="setting-label">Roll Mode</label>
-      <div class="roll-mode-selector">
-        <label class="radio-label">
-          <input
-            type="radio"
-            name="roll-mode"
-            value="frontend"
-            :checked="rollMode === 'frontend'"
-            @change="$emit('update:rollMode', 'frontend')"
+      <div class="roll-buttons-with-tooltip">
+        <div class="roll-buttons">
+          <button
+            class="roll-button"
+            :class="{ selected: rollMode === 'fixed' }"
+            :disabled="isRolling"
+            @click="$emit('generate-fixed')"
+          >
+            <svg class="roll-button__icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <rect x="2" y="2" width="20" height="20" rx="5"/>
+              <circle cx="12" cy="12" r="3"/>
+              <circle cx="6" cy="8" r="1.5"/>
+              <circle cx="18" cy="16" r="1.5"/>
+            </svg>
+            <span class="roll-button__text">Generate Fixed</span>
+          </button>
+          <button
+            class="roll-button"
+            :class="{ selected: rollMode === 'always' }"
+            :disabled="isRolling"
+            @click="$emit('always-randomize')"
+          >
+            <svg class="roll-button__icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M21 12a9 9 0 1 1-6.219-8.56"/>
+              <path d="M21 3v5h-5"/>
+              <circle cx="12" cy="12" r="3"/>
+              <circle cx="6" cy="8" r="1.5"/>
+              <circle cx="18" cy="16" r="1.5"/>
+            </svg>
+            <span class="roll-button__text">Always Randomize</span>
+          </button>
+          <button
+            class="roll-button"
+            :class="{ selected: rollMode === 'fixed' && canReuseLast && areLorasEqual(currentLoras, lastUsed) }"
+            :disabled="!canReuseLast"
+            @mouseenter="showTooltip = true"
+            @mouseleave="showTooltip = false"
+            @click="$emit('reuse-last')"
+          >
+            <svg class="roll-button__icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <path d="M9 14 4 9l5-5"/>
+              <path d="M4 9h10.5a5.5 5.5 0 0 1 5.5 5.5v0a5.5 5.5 0 0 1-5.5 5.5H11"/>
+            </svg>
+            <span class="roll-button__text">Reuse Last</span>
+          </button>
+        </div>
+
+        <!-- Last Used Preview Tooltip -->
+        <Transition name="tooltip">
+          <LastUsedPreview
+            v-if="showTooltip && lastUsed && lastUsed.length > 0"
+            :loras="lastUsed"
          />
-          <span>Frontend Roll (fixed until re-rolled)</span>
-        </label>
-        <button
-          class="roll-button"
-          :disabled="rollMode !== 'frontend' || isRolling"
-          @click="$emit('roll')"
-        >
-          <span class="roll-button__content">
-            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect width="18" height="18" x="3" y="3" rx="2" ry="2"></rect><path d="M8 8h.01"></path><path d="M16 16h.01"></path><path d="M16 8h.01"></path><path d="M8 16h.01"></path></svg>
-            Roll
-          </span>
-        </button>
-      </div>
-      <div class="roll-mode-selector">
-        <label class="radio-label">
-          <input
-            type="radio"
-            name="roll-mode"
-            value="backend"
-            :checked="rollMode === 'backend'"
-            @change="$emit('update:rollMode', 'backend')"
-          />
-          <span>Backend Roll (randomizes each execution)</span>
-        </label>
+        </Transition>
      </div>
    </div>
  </div>
 </template>

 <script setup lang="ts">
+import { ref } from 'vue'
+import LastUsedPreview from './LastUsedPreview.vue'
+import type { LoraEntry } from '../../composables/types'
+
 defineProps<{
  countMode: 'fixed' | 'range'
  countFixed: number
@@ -187,9 +212,12 @@ defineProps<{
  useSameClipStrength: boolean
  clipStrengthMin: number
  clipStrengthMax: number
-  rollMode: 'frontend' | 'backend'
+  rollMode: 'fixed' | 'always'
  isRolling: boolean
  isClipStrengthDisabled: boolean
+  lastUsed: LoraEntry[] | null
+  currentLoras: LoraEntry[]
+  canReuseLast: boolean
 }>()

 defineEmits<{
@@ -202,9 +230,25 @@ defineEmits<{
  'update:useSameClipStrength': [value: boolean]
  'update:clipStrengthMin': [value: number]
  'update:clipStrengthMax': [value: number]
-  'update:rollMode': [value: 'frontend' | 'backend']
-  roll: []
+  'update:rollMode': [value: 'fixed' | 'always']
+  'generate-fixed': []
+  'always-randomize': []
+  'reuse-last': []
 }>()
+
+const showTooltip = ref(false)
+
+const areLorasEqual = (a: LoraEntry[] | null, b: LoraEntry[] | null): boolean => {
+  if (!a || !b) return false
+  if (a.length !== b.length) return false
+  const sortedA = [...a].sort((x, y) => x.name.localeCompare(y.name))
+  const sortedB = [...b].sort((x, y) => x.name.localeCompare(y.name))
+  return sortedA.every((lora, i) =>
+    lora.name === sortedB[i].name &&
+    lora.strength === sortedB[i].strength &&
+    lora.clipStrength === sortedB[i].clipStrength
+  )
+}
 </script>

 <style scoped>
@@ -330,41 +374,75 @@ defineEmits<{
  cursor: pointer;
 }

+/* Roll buttons with tooltip container */
+.roll-buttons-with-tooltip {
+  position: relative;
+}
+
+/* Roll buttons container */
+.roll-buttons {
+  display: grid;
+  grid-template-columns: 1fr 1fr 1fr;
+  gap: 8px;
+}
+
 .roll-button {
-  padding: 8px 16px;
-  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
-  border: none;
+  padding: 8px 10px;
+  background: rgba(30, 30, 36, 0.6);
+  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
-  color: white;
-  font-size: 13px;
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: center;
+  gap: 6px;
+  color: #e4e4e7;
+  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
-  display: flex;
-  align-items: center;
-  justify-content: center;
 }

 .roll-button:hover:not(:disabled) {
-  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
-  transform: translateY(-1px);
-  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
+  background: rgba(66, 153, 225, 0.2);
+  border-color: rgba(66, 153, 225, 0.4);
+  color: #bfdbfe;
 }

-.roll-button:active:not(:disabled) {
-  transform: translateY(0);
+.roll-button.selected {
+  background: rgba(66, 153, 225, 0.3);
+  border-color: rgba(66, 153, 225, 0.6);
+  color: #e4e4e7;
+  box-shadow: 0 0 0 1px rgba(66, 153, 225, 0.3);
 }

 .roll-button:disabled {
-  opacity: 0.5;
+  opacity: 0.4;
  cursor: not-allowed;
-  background: linear-gradient(135deg, #52525b 0%, #3f3f46 100%);
 }

-.roll-button__content {
-  display: inline-flex;
-  align-items: center;
-  gap: 6px;
+.roll-button__icon {
+  width: 20px;
+  height: 20px;
+  flex-shrink: 0;
+}
+
+.roll-button__text {
+  font-size: 11px;
+  text-align: center;
+  line-height: 1.2;
+}
+
+/* Tooltip transitions */
+.tooltip-enter-active,
+.tooltip-leave-active {
+  transition: opacity 0.15s ease, transform 0.15s ease;
+}
+
+.tooltip-enter-from,
+.tooltip-leave-to {
+  opacity: 0;
+  transform: translateY(4px);
 }
 </style>
--- a/vue-widgets/src/composables/types.ts
+++ b/vue-widgets/src/composables/types.ts
@@ -64,7 +64,8 @@ export interface RandomizerConfig {
  use_same_clip_strength: boolean
  clip_strength_min: number
  clip_strength_max: number
-  roll_mode: 'frontend' | 'backend'
+  roll_mode: 'fixed' | 'always'
+  last_used?: LoraEntry[] | null
 }

 export interface LoraEntry {
--- a/vue-widgets/src/composables/useLoraRandomizerState.ts
+++ b/vue-widgets/src/composables/useLoraRandomizerState.ts
@@ -1,20 +1,23 @@
-import { ref, computed } from 'vue'
+import { ref, computed, watch } from 'vue'
 import type { ComponentWidget, RandomizerConfig, LoraEntry } from './types'

 export function useLoraRandomizerState(widget: ComponentWidget) {
  // State refs
  const countMode = ref<'fixed' | 'range'>('range')
-  const countFixed = ref(5)
-  const countMin = ref(3)
-  const countMax = ref(7)
+  const countFixed = ref(3)
+  const countMin = ref(2)
+  const countMax = ref(5)
  const modelStrengthMin = ref(0.0)
  const modelStrengthMax = ref(1.0)
  const useSameClipStrength = ref(true)
  const clipStrengthMin = ref(0.0)
  const clipStrengthMax = ref(1.0)
-  const rollMode = ref<'frontend' | 'backend'>('frontend')
+  const rollMode = ref<'fixed' | 'always'>('fixed')
  const isRolling = ref(false)

+  // Track last used combination (for backend roll mode)
+  const lastUsed = ref<LoraEntry[] | null>(null)
+
  // Build config object from current state
  const buildConfig = (): RandomizerConfig => ({
    count_mode: countMode.value,
@@ -27,20 +30,32 @@ export function useLoraRandomizerState(widget: ComponentWidget) {
    clip_strength_min: clipStrengthMin.value,
    clip_strength_max: clipStrengthMax.value,
    roll_mode: rollMode.value,
+    last_used: lastUsed.value,
  })

  // Restore state from config object
  const restoreFromConfig = (config: RandomizerConfig) => {
    countMode.value = config.count_mode || 'range'
-    countFixed.value = config.count_fixed || 5
-    countMin.value = config.count_min || 3
-    countMax.value = config.count_max || 7
+    countFixed.value = config.count_fixed || 3
+    countMin.value = config.count_min || 2
+    countMax.value = config.count_max || 5
    modelStrengthMin.value = config.model_strength_min ?? 0.0
    modelStrengthMax.value = config.model_strength_max ?? 1.0
    useSameClipStrength.value = config.use_same_clip_strength ?? true
    clipStrengthMin.value = config.clip_strength_min ?? 0.0
    clipStrengthMax.value = config.clip_strength_max ?? 1.0
-    rollMode.value = config.roll_mode || 'frontend'
+    // Migrate old roll_mode values to new ones
+    const rawRollMode = (config as any).roll_mode as string
+    if (rawRollMode === 'frontend') {
+      rollMode.value = 'fixed'
+    } else if (rawRollMode === 'backend') {
+      rollMode.value = 'always'
+    } else if (rawRollMode === 'fixed' || rawRollMode === 'always') {
+      rollMode.value = rawRollMode as 'fixed' | 'always'
+    } else {
+      rollMode.value = 'fixed'
+    }
+    lastUsed.value = config.last_used || null
  }

  // Roll loras - call API to get random selection
@@ -114,9 +129,38 @@ export function useLoraRandomizerState(widget: ComponentWidget) {
    }
  }

+  // Restore last used and return it
+  const useLastUsed = () => {
+    if (lastUsed.value && lastUsed.value.length > 0) {
+      return lastUsed.value
+    }
+    return null
+  }
+
  // Computed properties
  const isClipStrengthDisabled = computed(() => useSameClipStrength.value)

+  // Watch all state changes and update widget value
+  watch([
+    countMode,
+    countFixed,
+    countMin,
+    countMax,
+    modelStrengthMin,
+    modelStrengthMax,
+    useSameClipStrength,
+    clipStrengthMin,
+    clipStrengthMax,
+    rollMode,
+  ], () => {
+    const config = buildConfig()
+    if (widget.updateConfig) {
+      widget.updateConfig(config)
+    } else {
+      widget.value = config
+    }
+  }, { deep: true })
+
  return {
    // State refs
    countMode,
@@ -130,6 +174,7 @@ export function useLoraRandomizerState(widget: ComponentWidget) {
    clipStrengthMax,
    rollMode,
    isRolling,
+    lastUsed,

    // Computed
    isClipStrengthDisabled,
@@ -138,5 +183,6 @@ export function useLoraRandomizerState(widget: ComponentWidget) {
    buildConfig,
    restoreFromConfig,
    rollLoras,
+    useLastUsed,
  }
 }
--- a/vue-widgets/src/main.ts
+++ b/vue-widgets/src/main.ts
@@ -4,6 +4,12 @@ import LoraPoolWidget from '@/components/LoraPoolWidget.vue'
 import LoraRandomizerWidget from '@/components/LoraRandomizerWidget.vue'
 import type { LoraPoolConfig, LegacyLoraPoolConfig, RandomizerConfig } from './composables/types'

+const LORA_POOL_WIDGET_MIN_WIDTH = 500
+const LORA_POOL_WIDGET_MIN_HEIGHT = 400
+const LORA_RANDOMIZER_WIDGET_MIN_WIDTH = 500
+const LORA_RANDOMIZER_WIDGET_MIN_HEIGHT = 462
+const LORA_RANDOMIZER_WIDGET_MAX_HEIGHT = 462
+
 // @ts-ignore - ComfyUI external module
 import { app } from '../../../scripts/app.js'
 // @ts-ignore
@@ -44,7 +50,7 @@ function createLoraPoolWidget(node) {
      // Per dev guide: providing getMinHeight via options allows the system to
      // skip expensive DOM measurements during rendering loop, improving performance
      getMinHeight() {
-        return 400
+        return LORA_POOL_WIDGET_MIN_HEIGHT
      }
    }
  )
@@ -67,8 +73,8 @@ function createLoraPoolWidget(node) {
  vueApps.set(node.id, vueApp)

  widget.computeLayoutSize = () => {
-    const minWidth = 500
-    const minHeight = 400
+    const minWidth = LORA_POOL_WIDGET_MIN_WIDTH
+    const minHeight = LORA_POOL_WIDGET_MIN_HEIGHT

    return { minHeight, minWidth }
  }
@@ -106,13 +112,14 @@ function createLoraRandomizerWidget(node) {
      },
      setValue(v: RandomizerConfig) {
        internalValue = v
+        console.log('randomizer widget value update: ', internalValue)
        if (typeof widget.onSetValue === 'function') {
          widget.onSetValue(v)
        }
      },
      serialize: true,
      getMinHeight() {
-        return 500
+        return LORA_RANDOMIZER_WIDGET_MIN_HEIGHT
      }
    }
  )
@@ -126,15 +133,10 @@ function createLoraRandomizerWidget(node) {

  // Handle roll event from Vue component
  widget.onRoll = (randomLoras: any[]) => {
-    console.log('[createLoraRandomizerWidget] Roll event received:', randomLoras)
-
    // Find the loras widget on this node and update it
    const lorasWidget = node.widgets.find((w: any) => w.name === 'loras')
    if (lorasWidget) {
      lorasWidget.value = randomLoras
-      console.log('[createLoraRandomizerWidget] Updated loras widget with rolled LoRAs')
-    } else {
-      console.warn('[createLoraRandomizerWidget] loras widget not found on node')
    }
  }

@@ -152,9 +154,9 @@ function createLoraRandomizerWidget(node) {
  vueApps.set(node.id + 10000, vueApp) // Offset to avoid collision with pool widget

  widget.computeLayoutSize = () => {
-    const minWidth = 500
-    const minHeight = 500
-    const maxHeight = 500
+    const minWidth = LORA_RANDOMIZER_WIDGET_MIN_WIDTH
+    const minHeight = LORA_RANDOMIZER_WIDGET_MIN_HEIGHT
+    const maxHeight = LORA_RANDOMIZER_WIDGET_MAX_HEIGHT

    return { minHeight, minWidth, maxHeight }
  }
@@ -193,8 +195,6 @@ app.registerExtension({
        // Check if this is a randomizer node to enable lock buttons
        const isRandomizerNode = node.comfyClass === 'Lora Randomizer (LoraManager)'

-        console.log(node)
-
        // For randomizer nodes, add a callback to update connected trigger words
        const callback = isRandomizerNode ? (value: any) => {
          updateDownstreamLoaders(node)