@roqueform/reset-plugin/lib/resetPlugin.js

Manages Roqueform field initial value and dirty status.

'use strict';

var isDeepEqual = require('fast-deep-equal');
var roqueform = require('roqueform');

/**
 * Enhances fields with methods that manage the initial value.
 *
 * @param equalityChecker The callback that compares initial value and the current value of the field. By default, the
 * deep comparison is used.
 */
function resetPlugin(equalityChecker) {
    if (equalityChecker === void 0) { equalityChecker = isDeepEqual; }
    return function (field) {
        Object.defineProperty(field, 'isDirty', {
            configurable: true,
            get: function () { return !equalityChecker(field.initialValue, field.value); },
        });
        field.setInitialValue = function (value) {
            setInitialValue(field, value);
        };
        field.reset = function () {
            field.setValue(field.initialValue);
        };
        field.getDirtyFields = function () { return getDirtyFields(field, []); };
    };
}
function setInitialValue(field, initialValue) {
    if (roqueform.isEqual(field.initialValue, initialValue)) {
        return;
    }
    var root = field;
    while (root.parentField !== null) {
        initialValue = field.valueAccessor.set(root.parentField.value, root.key, initialValue);
        root = root.parentField;
    }
    roqueform.dispatchEvents(propagateInitialValue(field, root, initialValue, []));
}
function propagateInitialValue(originField, targetField, initialValue, events) {
    events.push({ type: 'change:initialValue', targetField: targetField, originField: originField, data: targetField.initialValue });
    targetField.initialValue = initialValue;
    if (targetField.children !== null) {
        for (var _i = 0, _a = targetField.children; _i < _a.length; _i++) {
            var child = _a[_i];
            var childInitialValue = targetField.valueAccessor.get(initialValue, child.key);
            if (child !== originField && roqueform.isEqual(child.initialValue, childInitialValue)) {
                continue;
            }
            propagateInitialValue(originField, child, childInitialValue, events);
        }
    }
    return events;
}
function getDirtyFields(field, batch) {
    if (field.isDirty) {
        batch.push(field);
    }
    if (field.children !== null) {
        for (var _i = 0, _a = field.children; _i < _a.length; _i++) {
            var child = _a[_i];
            getDirtyFields(child, batch);
        }
    }
    return batch;
}

exports.resetPlugin = resetPlugin;