molstar
Version:
A comprehensive macromolecular library.
50 lines (49 loc) • 1.79 kB
JavaScript
/**
* Copyright (c) 2018 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
import { idFactory } from './id-factory';
var ValueRef;
(function (ValueRef) {
function create(ref) { return { ref }; }
ValueRef.create = create;
function set(ref, value) { ref.ref = value; return ref; }
ValueRef.set = set;
})(ValueRef || (ValueRef = {}));
const getNextId = idFactory(0, 0x7FFFFFFF);
var ValueBox;
(function (ValueBox) {
function create(value, metadata) {
return { id: getNextId(), version: 0, value, metadata: metadata };
}
ValueBox.create = create;
/** The box.metadata is carried over from the old box */
function withValue(box, value) {
return { id: box.id, version: box.version + 1, value, metadata: box.metadata };
}
ValueBox.withValue = withValue;
})(ValueBox || (ValueBox = {}));
var ValueCell;
(function (ValueCell) {
function create(value, metadata) {
return ValueRef.create(ValueBox.create(value, metadata));
}
ValueCell.create = create;
/** The box.metadata is carried over from the old box */
function update(cell, value) {
return ValueRef.set(cell, ValueBox.withValue(cell.ref, value));
}
ValueCell.update = update;
function set(cell, box) {
return ValueRef.set(cell, box);
}
ValueCell.set = set;
/** Updates the cell if the value is has changed, comparing by reference */
function updateIfChanged(cell, value) {
return cell.ref.value !== value ? update(cell, value) : cell;
}
ValueCell.updateIfChanged = updateIfChanged;
})(ValueCell || (ValueCell = {}));
export { ValueRef, ValueBox, ValueCell };