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<div class="form-builder">
<div class="row g-3">
<!-- Left: form list (narrow) -->
<div class="col-md-2">
<div class="mb-2">
<button type="button" class="btn btn-sm btn-success w-100" @click="addForm">
<font-awesome-icon icon="fa-solid fa-plus" class="me-1" />
{{ t('forms.newForm') }}
</button>
</div>
<div v-if="forms.length === 0" class="empty-list text-center text-muted py-4">
<font-awesome-icon icon="fa-solid fa-file-alt" size="2x" class="mb-2 opacity-50" />
<p class="small mb-0">{{ t('forms.noForms') }}</p>
</div>
<div
v-for="form in forms"
:key="form.id"
class="form-list-item"
:class="{ selected: selectedFormId === form.id }"
@click="selectForm(form.id)"
>
<div class="flex-grow-1 text-truncate small">
{{ getFormName(form) }}
<span
v-if="isDefaultForm(form)"
class="badge bg-primary ms-1"
:title="t('forms.purposeDefaultTitle')"
>{{ t('forms.purposeDefaultBadge') }}</span
>
<span
v-if="form.purpose === 'short'"
class="badge bg-info ms-1"
:title="t('forms.purposeShortTitle')"
>{{ t('forms.purposeShortBadge') }}</span
>
</div>
<button
type="button"
class="btn-icon-danger"
:title="t('forms.deleteForm')"
@click.stop="removeForm(form.id)"
>
<font-awesome-icon icon="fa-solid fa-trash" />
</button>
</div>
</div>
<!-- Right: form editor -->
<div class="col-md-10">
<!-- Placeholder when no form selected -->
<div v-if="!selectedForm" class="text-center text-muted py-5">
<font-awesome-icon icon="fa-solid fa-hand-pointer" size="2x" class="mb-2 opacity-50" />
<p class="small">{{ t('forms.selectFormToEdit') }}</p>
</div>
<!-- Editor - v-show keeps gridRef always in DOM once rendered -->
<div v-show="!!selectedForm">
<!-- Name & Description -->
<div class="mb-2">
<label class="form-label small fw-bold mb-1">{{ t('forms.formName') }}</label>
<input
:value="selectedForm?.name[currentLanguage] ?? ''"
type="text"
class="form-control form-control-sm"
:placeholder="t('forms.formNamePlaceholder')"
@input="setName(($event.target as HTMLInputElement).value)"
/>
</div>
<div class="mb-3">
<label class="form-label small fw-bold mb-1">{{ t('forms.formDescription') }}</label>
<input
:value="(selectedForm?.description ?? {})[currentLanguage] ?? ''"
type="text"
class="form-control form-control-sm"
:placeholder="t('forms.formDescriptionPlaceholder')"
@input="setDescription(($event.target as HTMLInputElement).value)"
/>
</div>
<!-- Purpose: short default -->
<div class="mb-3 d-flex align-items-center gap-2">
<input
:id="'form-short-default-' + selectedFormId"
type="checkbox"
class="form-check-input mt-0"
:checked="selectedForm?.purpose === 'short'"
@change="toggleShortDefault(($event.target as HTMLInputElement).checked)"
/>
<label
:for="'form-short-default-' + selectedFormId"
class="form-check-label small fw-bold mb-0"
>
{{ t('forms.purposeShortCheckbox') }}
</label>
<span class="text-muted small">{{ t('forms.purposeShortHelp') }}</span>
</div>
<!-- Layout builder: palette + Gridstack canvas -->
<div class="d-flex gap-3 fields-area">
<!-- Palette -->
<div ref="paletteRef" class="palette-col flex-shrink-0">
<p class="small fw-bold mb-1">{{ t('forms.availableFields') }}</p>
<div class="palette-list">
<div
v-if="availableFields.length === 0"
class="text-muted text-center small py-3 palette-empty"
>
{{ t('forms.allFieldsAdded') }}
</div>
<div
v-for="field in availableFields"
:key="field.fieldId"
class="palette-field-item"
:data-field-id="field.fieldId"
:gs-id="field.fieldId"
gs-w="6"
gs-h="1"
@click="addFieldToGrid(field)"
>
<font-awesome-icon
:icon="getFieldIcon(field.type ?? 'text')"
class="me-2 text-muted flex-shrink-0"
/>
<span class="text-truncate flex-grow-1">{{ getEntityFieldName(field) }}</span>
<font-awesome-icon
icon="fa-solid fa-plus"
class="ms-1 text-success flex-shrink-0"
size="xs"
/>
</div>
</div>
</div>
<!-- Gridstack canvas -->
<div class="flex-grow-1 min-w-0">
<p class="small fw-bold mb-1">{{ t('forms.formCanvas') }}</p>
<div class="form-grid-wrapper">
<div ref="gridRef" class="grid-stack" @click="onGridClick"></div>
<div v-if="gridIsEmpty" class="empty-canvas-overlay">
<font-awesome-icon icon="fa-solid fa-arrow-left" class="me-2 opacity-50" />
<span class="small text-muted">{{ t('forms.dragFieldsHere') }}</span>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</template>
<script setup lang="ts">
import { ref, computed, onMounted, onUnmounted, watch, nextTick } from 'vue'
import { GridStack } from 'gridstack'
import type { GridItemHTMLElement } from 'gridstack'
import 'gridstack/dist/gridstack.min.css'
import { icon as faIcon } from '@fortawesome/fontawesome-svg-core'
import type { IconName } from '@fortawesome/fontawesome-svg-core'
import { useUILanguage } from '@/composables/useUILanguage'
// GridStack v12 uses textContent by default for XSS safety.
// Our content is safe: field IDs and names are properly escaped via escapeHtml().
GridStack.renderCB = (el: HTMLElement, w: { content?: string }) => {
if (el && w?.content) el.innerHTML = w.content
}
import type { FormDefinition, FormFieldItem } from '@/schemas/entity-schema'
import type { EntityField } from '@/stores/entities'
const { t } = useUILanguage()
interface Props {
modelValue?: FormDefinition[]
entityFields?: EntityField[]
enabledLanguages?: string[]
defaultLanguage?: string
currentLanguage?: string
}
interface Emits {
(e: 'update:modelValue', value: FormDefinition[]): void
}
const props = withDefaults(defineProps<Props>(), {
modelValue: () => [],
entityFields: () => [],
enabledLanguages: () => ['en', 'fr'],
defaultLanguage: 'en',
currentLanguage: 'en'
})
const emit = defineEmits<Emits>()
// ---- State ----
const gridRef = ref<HTMLElement | null>(null)
const paletteRef = ref<HTMLElement | null>(null)
let grid: GridStack | null = null
let isSyncing = false
const forms = computed(() => props.modelValue)
const selectedFormId = ref<string | null>(null)
const selectedForm = computed(() =>
selectedFormId.value ? (forms.value.find((f) => f.id === selectedFormId.value) ?? null) : null
)
const gridIsEmpty = computed(() => (selectedForm.value?.fields.length ?? 0) === 0)
const placedFieldIds = computed(
() => new Set(selectedForm.value?.fields.map((f) => f.fieldId) ?? [])
)
const availableFields = computed(() => {
const fields = props.entityFields.filter(
(f) => f.fieldId != null && !placedFieldIds.value.has(f.fieldId)
)
return fields
.slice()
.sort((a, b) =>
getEntityFieldName(a).localeCompare(getEntityFieldName(b), undefined, { sensitivity: 'base' })
)
})
// ---- Gridstack lifecycle ----
function initGrid(): void {
if (!gridRef.value || grid) return
grid = GridStack.init(
{
column: 12,
cellHeight: 50,
margin: 4,
float: false,
minRow: 2,
resizable: { handles: 'se' },
draggable: { handle: '.grid-stack-item-content' },
acceptWidgets: (el: Element) => el.classList.contains('palette-field-item')
},
gridRef.value
)
grid.on('change', () => {
if (!isSyncing) syncGridToModel()
})
// When a palette item is dropped, GridStack may use the HTML attribute fallback
// (gs-id via _readAttr on the clone) instead of gridstackNode (JS property, not
// cloned). In that case the widget is created correctly but has no content yet.
// The `dropped` event fires AFTER `change`, so we re-inject the content here.
grid.on(
'dropped',
(_event: Event, _prevNode: unknown, newNode: { el?: HTMLElement; id?: string }) => {
const fieldId = newNode?.id
if (!fieldId) return
const widgetEl = grid?.getGridItems().find((item) => item.gridstackNode?.id === fieldId)
if (widgetEl) {
const content = widgetEl.querySelector('.grid-stack-item-content')
if (content) content.innerHTML = buildWidgetContent(fieldId, getEntityField(fieldId))
}
// Sync model so the dropped field is removed from the palette.
// The `change` event does not reliably fire for external drops (palette → grid).
if (!isSyncing) syncGridToModel()
}
)
// Live snap via requestAnimationFrame for both resize and drag.
// interact.js sets raw pixel width/height (resize) and left/top (drag) on every pointermove,
// even between grid cell boundaries. The rAF callback runs AFTER all JS handlers but BEFORE
// the browser paints, so we always override with snapped calc() values.
let resizeRAFId: number | null = null
grid.on('resizestart', (_event: Event, el: GridItemHTMLElement) => {
const snap = () => {
const node = el.gridstackNode
if (node) {
el.style.width = `calc(${node.w ?? 1} * var(--gs-column-width))`
el.style.height = `calc(${node.h ?? 1} * var(--gs-cell-height))`
}
resizeRAFId = requestAnimationFrame(snap)
}
resizeRAFId = requestAnimationFrame(snap)
})
grid.on('resizestop', () => {
if (resizeRAFId !== null) {
cancelAnimationFrame(resizeRAFId)
resizeRAFId = null
}
})
}
onMounted(() => {
Iif (selectedFormId.value && gridRef.value) {
initGrid()
rebuildGrid()
setupPaletteDragIn()
}
})
onUnmounted(() => {
Iif (grid) {
grid.destroy(false)
grid = null
}
})
watch(
() => selectedFormId.value,
async () => {
await nextTick()
if (!grid) initGrid()
rebuildGrid()
setupPaletteDragIn()
}
)
watch(
() => props.currentLanguage,
() => refreshWidgetLabels()
)
// Re-register palette items with GridStack's DD system whenever the available fields change.
// This enables the proper ghost/placeholder when dragging from palette to canvas.
watch(availableFields, () => setupPaletteDragIn())
async function setupPaletteDragIn(): Promise<void> {
await nextTick()
Eif (!paletteRef.value || !grid) return
const items = Array.from(paletteRef.value.querySelectorAll<HTMLElement>('.palette-field-item'))
if (items.length === 0) return
const widgets = items.map((el) => {
const fieldId = el.dataset.fieldId ?? ''
const field = getEntityField(fieldId)
return { id: fieldId, w: 6, h: 1, content: buildWidgetContent(fieldId, field) }
})
GridStack.setupDragIn(items, { appendTo: 'body', helper: 'clone' }, widgets)
}
// ---- Grid operations ----
function rebuildGrid(): void {
if (!grid) return
isSyncing = true
try {
grid.removeAll(true)
const fields = selectedForm.value?.fields ?? []
const sorted = [...fields].sort((a, b) => {
if ((a.y ?? 0) !== (b.y ?? 0)) return (a.y ?? 0) - (b.y ?? 0)
return (a.x ?? 0) - (b.x ?? 0)
})
sorted.forEach((f) => addWidgetToGrid(f.fieldId, f.x, f.y, f.w, f.h))
} finally {
isSyncing = false
}
}
function addWidgetToGrid(fieldId: string, x?: number, y?: number, w?: number, h?: number): void {
if (!grid) return
const field = getEntityField(fieldId)
const useAutoPosition = x === undefined || y === undefined
grid.addWidget({
...(useAutoPosition ? { autoPosition: true } : { x, y }),
w: w ?? 6,
h: h ?? 1,
id: fieldId,
content: buildWidgetContent(fieldId, field)
})
}
function escapeHtml(s: string): string {
return s
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
}
function buildWidgetContent(fieldId: string, field: EntityField | undefined): string {
const name = escapeHtml(getEntityFieldName(field))
const safeId = escapeHtml(fieldId)
const iconClass = getFieldIcon(field?.type ?? 'text')
const iconName = iconClass.split(' ').pop()?.replace('fa-', '') as IconName | undefined
let iconHtml = ''
if (iconName) {
try {
iconHtml = faIcon({ prefix: 'fas', iconName })?.html?.[0] ?? ''
} catch {
// icon not found, skip
}
}
return `<div class="gs-item-inner" data-field-id="${safeId}">
<span class="gs-item-icon">${iconHtml}</span>
<span class="gs-item-label">${name}</span>
<button class="gs-remove-btn" type="button" data-remove="${safeId}">\u00d7</button>
</div>`
}
function refreshWidgetLabels(): void {
if (!grid || !selectedForm.value) return
grid.getGridItems().forEach((el) => {
const node = el.gridstackNode
if (!node?.id) return
const fieldId = node.id as string
const content = el.querySelector('.grid-stack-item-content')
if (content) content.innerHTML = buildWidgetContent(fieldId, getEntityField(fieldId))
})
}
function syncGridToModel(): void {
const formId = selectedFormId.value
if (!formId || !grid) return
const fields: FormFieldItem[] = grid.getGridItems().map((el, i) => {
const node = el.gridstackNode!
const fieldId = node.id as string
const existing = selectedForm.value?.fields.find((f) => f.fieldId === fieldId)
return {
fieldId,
order: i,
x: node.x ?? 0,
y: node.y ?? 0,
w: node.w ?? 6,
h: node.h ?? 1,
labelOverride: existing?.labelOverride,
placeholderOverride: existing?.placeholderOverride
}
})
isSyncing = true
updateForm(formId, { fields })
isSyncing = false
}
function onGridClick(e: MouseEvent): void {
const btn = (e.target as HTMLElement).closest<HTMLElement>('[data-remove]')
if (!btn) return
const fieldId = btn.dataset.remove
if (fieldId) removeFromGrid(fieldId)
}
function addFieldToGrid(field: EntityField): void {
if (!grid || !selectedFormId.value || !field.fieldId) return
addWidgetToGrid(field.fieldId)
syncGridToModel()
}
function removeFromGrid(fieldId: string): void {
if (!grid) return
const el = grid.getGridItems().find((item) => item.gridstackNode?.id === fieldId)
if (el) grid.removeWidget(el)
syncGridToModel()
}
// ---- Helpers ----
const fieldIconMap: Record<string, string> = {
text: 'fa-solid fa-font',
textarea: 'fa-solid fa-align-left',
number: 'fa-solid fa-hashtag',
email: 'fa-solid fa-envelope',
date: 'fa-solid fa-calendar',
boolean: 'fa-solid fa-toggle-on',
select: 'fa-solid fa-list',
image: 'fa-solid fa-image',
image_set: 'fa-solid fa-images',
workflow: 'fa-solid fa-diagram-project'
}
function getFieldIcon(type: string): string {
return fieldIconMap[type] ?? 'fa-solid fa-question'
}
function getEntityField(fieldId: string): EntityField | undefined {
return props.entityFields.find((f) => f.fieldId === fieldId)
}
function getEntityFieldName(field: EntityField | undefined): string {
Iif (!field) return '?'
Iif (typeof field.name === 'string') return field.name || '—'
return field.name?.[props.currentLanguage] || field.name?.['en'] || '—'
}
function getFormName(form: FormDefinition): string {
return (
form.name[props.currentLanguage] ||
form.name[props.defaultLanguage] ||
Object.values(form.name)[0] ||
t('forms.unnamedForm')
)
}
// ---- Form list actions ----
function selectForm(id: string): void {
selectedFormId.value = id
}
function addForm(): void {
const id = `form_${Date.now()}_${Math.random().toString(36).slice(2, 7)}`
const newForm: FormDefinition = {
id,
name: props.enabledLanguages.reduce(
(acc, lang) => {
acc[lang] = ''
return acc
},
{} as Record<string, string>
),
description: undefined,
fields: []
}
newForm.name[props.defaultLanguage] = t('forms.unnamedForm')
emit('update:modelValue', [...forms.value, newForm])
selectedFormId.value = id
}
function removeForm(id: string): void {
emit(
'update:modelValue',
forms.value.filter((f) => f.id !== id)
)
if (selectedFormId.value === id) selectedFormId.value = null
}
function updateForm(id: string, patch: Partial<FormDefinition>): void {
emit(
'update:modelValue',
forms.value.map((f) => (f.id === id ? { ...f, ...patch } : f))
)
}
function setName(value: string): void {
if (!selectedFormId.value || !selectedForm.value) return
const name = { ...selectedForm.value.name }
name[props.currentLanguage] = value
updateForm(selectedFormId.value, { name })
}
function setDescription(value: string): void {
if (!selectedFormId.value || !selectedForm.value) return
const desc = { ...(selectedForm.value.description ?? {}) }
desc[props.currentLanguage] = value
updateForm(selectedFormId.value, { description: desc })
}
/** The first form in the list acts as the default display form for item cards. */
function isDefaultForm(form: FormDefinition): boolean {
return forms.value[0]?.id === form.id
}
/**
* Marks or unmarks the selected form as the short default form for FK display.
* Only one form can hold purpose === 'short' at a time.
*/
function toggleShortDefault(checked: boolean): void {
if (!selectedFormId.value) return
emit(
'update:modelValue',
forms.value.map((f) => {
if (f.id === selectedFormId.value) {
const purpose: FormDefinition['purpose'] = checked ? 'short' : undefined
return { ...f, purpose }
}
// Clear 'short' on other forms when enabling
if (checked && f.purpose === 'short') {
return { ...f, purpose: undefined }
}
return f
})
)
}
</script>
<style scoped>
.palette-col {
width: 160px;
}
.palette-list {
border: 1px solid var(--bw-border);
border-radius: 6px;
padding: 4px;
background: var(--bw-surface-muted);
min-height: 60px;
}
.palette-field-item {
display: flex;
align-items: center;
padding: 5px 8px;
border: 1px solid var(--bw-border);
border-radius: 5px;
margin-bottom: 4px;
background: var(--bw-surface);
cursor: pointer;
user-select: none;
transition:
background 0.12s,
border-color 0.12s;
}
.palette-field-item:hover {
background: color-mix(in srgb, var(--bw-surface) 84%, #615581 16%);
border-color: #b3a8c7;
}
.palette-empty {
border: 1px dashed var(--bw-border);
border-radius: 5px;
}
.form-grid-wrapper {
position: relative;
min-height: 120px;
border: 2px dashed var(--bw-border);
border-radius: 6px;
padding: 4px;
}
.empty-canvas-overlay {
position: absolute;
inset: 0;
display: flex;
align-items: center;
justify-content: center;
pointer-events: none;
border-radius: 6px;
}
.form-list-item {
display: flex;
align-items: center;
gap: 0.5rem;
padding: 7px 10px;
border: 1px solid var(--bw-border);
border-radius: 6px;
margin-bottom: 5px;
cursor: pointer;
background: var(--bw-surface);
transition:
background 0.15s,
border-color 0.15s;
}
.form-list-item:hover {
background: color-mix(in srgb, var(--bw-surface) 84%, #615581 16%);
border-color: #c4b8d9;
}
.form-list-item.selected {
background: color-mix(in srgb, var(--bw-surface) 78%, #615581 22%);
border-color: #615581;
border-width: 2px;
}
.btn-icon-danger {
background: none;
border: none;
color: #dc3545;
cursor: pointer;
padding: 2px 4px;
border-radius: 4px;
font-size: 12px;
opacity: 0.5;
transition: opacity 0.15s;
}
.btn-icon-danger:hover {
opacity: 1;
}
.empty-list {
border: 1px dashed var(--bw-border);
border-radius: 6px;
}
/* Gridstack widget content (rendered via innerHTML, requires :deep) */
:deep(.gs-item-inner) {
display: flex;
align-items: center;
gap: 6px;
height: 100%;
padding: 0 10px;
background: var(--bw-surface-muted);
border-radius: 4px;
user-select: none;
cursor: grab;
}
:deep(.gs-item-inner:active) {
cursor: grabbing;
}
:deep(.gs-item-icon) {
flex-shrink: 0;
display: flex;
align-items: center;
color: color-mix(in srgb, var(--bw-text) 55%, #615581 45%);
width: 1em;
}
:deep(.gs-item-icon svg) {
width: 0.85em;
height: 0.85em;
}
:deep(.gs-item-label) {
flex: 1;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
:deep(.gs-remove-btn) {
background: none;
border: none;
color: var(--bw-text-muted);
cursor: pointer;
font-size: 18px;
padding: 0 4px;
line-height: 1;
border-radius: 3px;
flex-shrink: 0;
transition: color 0.15s;
}
:deep(.gs-remove-btn:hover) {
color: #dc3545;
}
/* Only the se (bottom-right) handle is active — its icon stays visible */
:deep(.grid-stack-item-content) {
border-radius: 5px;
border: 1px solid var(--bw-border);
background: var(--bw-surface);
overflow: hidden;
cursor: grab;
}
:deep(.grid-stack-item-content:active) {
cursor: grabbing;
}
:deep(.grid-stack-item:hover .grid-stack-item-content) {
border-color: #b3a8c7;
}
/* Custom resize handle: replace arrow with a small corner (angle) icon */
/* Annule la rotation héritée de GridStack sur la poignée resize SE */
:deep(.grid-stack-item > .ui-resizable-se) {
transform: none !important;
background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 18 18"><polyline points="2,18 18,18 18,2" fill="none" stroke="%23615581" stroke-width="2"/></svg>');
background-repeat: no-repeat;
background-position: center;
background-size: 16px 16px;
}
</style>
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