import type { IActivityHandler } from "../../IActivityHandler";
import type { Item } from "../../forms/FormDefinition";
export interface GetFormElementItemsFromCollectionInputs {
    collection: any[];
    labelFieldName?: string;
    valueFieldName?: string;
}
export interface GetFormElementItemsFromCollectionOutputs {
    /** @description The result items collection. */
    items: Record<string, Item>;
}
export declare class GetFormElementItemsFromCollection implements IActivityHandler {
    static readonly action = "gcx:wf:forms::GetFormElementItemsFromCollection";
    static readonly suite = "gcx:wf:builtin";
    execute(inputs: GetFormElementItemsFromCollectionInputs): GetFormElementItemsFromCollectionOutputs;
    /**
     * Returns the property name to use based on the supplied value.
     * If no match is found, `undefined` is returned.
     * @param propertyName The user-input name of the property.
     * @param propertyNames The names of all valid properties.
     * @returns The name of the matching field, or `undefined` if no match was found.
     */
    private _getPropertyName;
    /**
     * Attempt to get the value of the specified property.
     * If no match is found, `undefined` is returned.
     * Values of `null` and `undefined` are converted to empty strings to prevent confusion with a "no match found" result.
     * @param propertyName The user-input name of the property.
     * @param propertyNames The names of all valid properties.
     * @param item An item from the collection.
     */
    private _getPropertyValue;
    private _getTokenValues;
    /**
     * Checks if there is a field name that matches the supplied label.
     * @param label The label input to be checked.
     * @param propertyNames The names of all valid properties.
     */
    private _isLabelFieldName;
    /**
     * Gets all of the property names that are valid for the specified object.
     * We can't simply rely on `Object.keys(obj)` as it could be inheriting properties.
     * Instead, we check every prototype.
     */
    private getPropertyNames;
}