Function Selection1

docs/app/js/sanddance-app.js:25893–25915

* Create a new Selection. If `TItem` does not have a `key` property, you must provide an options * object with a `getKey` implementation. Providing options is optional otherwise. * (At most one `options` object is accepted.)

()

     * object with a `getKey` implementation. Providing options is optional otherwise.
     * (At most one `options` object is accepted.)
     */ function Selection1() {
        var options = []; // Otherwise, arguments require options with `getKey`.
        for(var _i = 0 // Otherwise, arguments require options with `getKey`.
        ; _i < arguments.length // Otherwise, arguments require options with `getKey`.
        ; _i++ // Otherwise, arguments require options with `getKey`.
        )options[_i] = arguments[_i]; // Otherwise, arguments require options with `getKey`.
        var _a = options[0] || {}, onSelectionChanged = _a.onSelectionChanged, onItemsChanged = _a.onItemsChanged, getKey = _a.getKey, _b = _a.canSelectItem, canSelectItem = _b === void 0 ? function() {
            return true;
        } : _b, items = _a.items, _c = _a.selectionMode, selectionMode = _c === void 0 ? (0, _selectionTypes.SelectionMode).multiple : _c;
        this.mode = selectionMode;
        this._getKey = getKey || defaultGetKey;
        this._changeEventSuppressionCount = 0;
        this._exemptedCount = 0;
        this._anchoredIndex = 0;
        this._unselectableCount = 0;
        this._onSelectionChanged = onSelectionChanged;
        this._onItemsChanged = onItemsChanged;
        this._canSelectItem = canSelectItem;
        this._keyToIndexMap = {};
        this._isModal = false;
        this.setItems(items || [], true);
        this.count = this.getSelectedCount();
    }
    Selection1.prototype.canSelectItem = function(item, index) {
        if (typeof index === "number" && index < 0) return false;
        return this._canSelectItem(item, index);