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import { customElement, property, state } from 'lit/decorators.js';
import { BaseListEditor, ListItem } from './BaseListEditor';
interface KeyValueItem extends ListItem {
key: string;
value: string;
}
@customElement('temba-key-value-editor')
export class KeyValueEditor extends BaseListEditor<KeyValueItem> {
@property({ type: String })
keyPlaceholder = 'Key';
@property({ type: String })
valuePlaceholder = 'Value';
@property({ type: Boolean })
showValidation = true;
@property({ type: Boolean })
readOnlyKeys = false;
@state()
private keyErrors: { [index: number]: string } = {};
// Configure to maintain empty items
maintainEmptyItem = true;
constructor() {
super();
this._items = [];
}
// External API uses array format to preserve duplicate keys
@property({ type: Array })
get value(): KeyValueItem[] | any[] {
return this._items.filter(
({ key, value }) => key.trim() !== '' || value.trim() !== ''
);
}
set value(newValue: KeyValueItem[] | Record<string, string> | any) {
if (Array.isArray(newValue)) {
this._items = [...newValue];
} else {
// Convert Record to array format
this._items = Object.entries(newValue || {}).map(([key, value]) => ({
key,
value: typeof value === 'string' ? value : String(value)
}));
}
this.requestUpdate();
}
// Implement abstract methods
isEmptyItem(item: KeyValueItem): boolean {
return item.key.trim() === '' && item.value.trim() === '';
}
createEmptyItem(): KeyValueItem {
return { key: '', value: '' };
}
// Override cleanItems to return array format to preserve duplicate keys
protected cleanItems(items: KeyValueItem[]): KeyValueItem[] {
return items.filter(
({ key, value }) => key.trim() !== '' || value.trim() !== ''
);
}
// Method to convert to Record format for final form submission
toRecord(): Record<string, string> {
const result: Record<string, string> = {};
this._items.forEach(({ key, value }) => {
if (key.trim() !== '' || value.trim() !== '') {
result[key] = value;
}
});
return result;
}
// Method to validate and set key errors for duplicates and empty keys with values
validateKeys(): boolean {
const newKeyErrors: { [index: number]: string } = {};
// Check for empty keys with values
this._items.forEach(({ key, value }, index) => {
if (key.trim() === '' && value.trim() !== '') {
newKeyErrors[index] = 'Key is required when value is provided';
}
});
// Check for duplicate keys (only non-empty ones)
const nonEmptyKeys = this._items
.map(({ key }, index) => ({ key: key.trim(), index }))
.filter(({ key }) => key !== '');
const keyCount = new Map<string, number[]>();
nonEmptyKeys.forEach(({ key, index }) => {
if (!keyCount.has(key)) {
keyCount.set(key, []);
}
keyCount.get(key)!.push(index);
});
// Mark duplicate keys with errors
keyCount.forEach((indices, key) => {
if (indices.length > 1) {
indices.forEach((index) => {
// Only show duplicate error if there's no empty key error already
if (!newKeyErrors[index]) {
newKeyErrors[index] = `Duplicate key "${key}"`;
}
});
}
});
this.keyErrors = newKeyErrors;
return Object.keys(newKeyErrors).length === 0;
}
// Clear key errors
clearKeyErrors(): void {
this.keyErrors = {};
}
// Override updateValue to emit array format and validate keys
protected updateValue(newValue: KeyValueItem[]) {
this._items = newValue;
// Clear errors and re-validate when items change
this.clearKeyErrors();
this.validateKeys();
this.dispatchEvent(
new CustomEvent('change', {
detail: { value: this.cleanItems(newValue) },
bubbles: true
})
);
this.requestUpdate();
}
private handleKeyChange(index: number, newKey: string) {
const items = this.displayItems;
const currentItem = items[index];
// Clear any existing error for this key when it's modified
if (this.keyErrors[index]) {
const newKeyErrors = { ...this.keyErrors };
delete newKeyErrors[index];
this.keyErrors = newKeyErrors;
}
this.handleItemChange(index, {
key: newKey,
value: currentItem.value
});
}
private handleValueChange(index: number, newValue: string) {
const items = this.displayItems;
const currentItem = items[index];
// Clear any existing error for this key when value is modified
if (this.keyErrors[index]) {
const newKeyErrors = { ...this.keyErrors };
delete newKeyErrors[index];
this.keyErrors = newKeyErrors;
}
this.handleItemChange(index, {
key: currentItem.key,
value: newValue
});
}
// Override renderWidget for readOnlyKeys to use a single grid
// so all key labels share one auto-sized column
renderWidget(): TemplateResult {
if (this.readOnlyKeys) {
const items = this.displayItems;
return html`
<div class="readonly-keys-grid">
${items.map(
(item, index) => html`
<div class="key-label">${item.key}</div>
<temba-textinput
.value=${item.value}
.placeholder=${this.valuePlaceholder}
@change=${(e: any) =>
this.handleValueChange(index, e.target.value)}
></temba-textinput>
`
)}
</div>
`;
}
return super.renderWidget();
}
renderItem(item: KeyValueItem, index: number): TemplateResult {
const canRemove = this.canRemoveItem(index);
const keyError =
this.showValidation && this.keyErrors[index] ? this.keyErrors[index] : '';
return html`
<div class="row">
<temba-textinput
.value=${item.key}
.placeholder=${this.keyPlaceholder}
.errors=${keyError ? [keyError] : []}
@change=${(e: any) => this.handleKeyChange(index, e.target.value)}
></temba-textinput>
<temba-textinput
.value=${item.value}
.placeholder=${this.valuePlaceholder}
@change=${(e: any) => this.handleValueChange(index, e.target.value)}
></temba-textinput>
${canRemove
? html`
<button class="remove-btn" @click=${() => this.removeItem(index)}>
×
</button>
`
: html`<div class="remove-btn-spacer"></div>`}
</div>
`;
}
protected get displayItems(): KeyValueItem[] {
if (this.readOnlyKeys) {
// In readOnlyKeys mode, show only the actual items (no empty row)
return [...this._items];
}
return super.displayItems;
}
protected shouldShowAddButton(): boolean {
if (this.readOnlyKeys) {
return false;
}
return super.shouldShowAddButton();
}
protected getContainerClass(): string {
return 'key-value-editor';
}
static get styles() {
return css`
${super.styles}
.key-value-editor {
display: flex;
flex-direction: column;
gap: 8px;
}
.row {
display: grid;
grid-template-columns: 1fr 1fr auto;
align-items: center;
column-gap: 6px;
}
.readonly-keys-grid {
display: grid;
grid-template-columns: auto 1fr;
gap: 8px 10px;
align-items: center;
}
.key-label {
font-size: 14px;
color: #555;
padding: 6px 10px;
white-space: nowrap;
}
.remove-btn {
width: 32px;
height: 32px;
border: 1px solid #ccc;
border-radius: 4px;
background: #f8f8f8;
color: #666;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
font-size: 18px;
}
.remove-btn:hover:not(:disabled) {
background: #f0f0f0;
}
.remove-btn:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.remove-btn-spacer {
width: 32px;
height: 32px;
}
`;
}
}
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