stream-chat-react-native-core/lib/commonjs/state-store/selection-store.js

The official React Native and Expo components for Stream Chat, a service for building chat applications

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useIsSelectionEmpty = exports.useIsSelected = exports.SelectionStore = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _react = require("react");
var _streamChat = require("stream-chat");
var _useStateStore = require("../hooks/useStateStore");
var createInitialState = () => ({
  selectedIds: new Set()
});
var SelectionStore = exports.SelectionStore = function () {
  function SelectionStore() {
    (0, _classCallCheck2.default)(this, SelectionStore);
    this.state = new _streamChat.StateStore(createInitialState());
  }
  return (0, _createClass2.default)(SelectionStore, [{
    key: "select",
    value: function select(id) {
      if (id === undefined || id === null) {
        return;
      }
      var _this$state$getLatest = this.state.getLatestValue(),
        selectedIds = _this$state$getLatest.selectedIds;
      if (selectedIds.has(id)) {
        return;
      }
      var next = new Set(selectedIds);
      next.add(id);
      this.state.partialNext({
        selectedIds: next
      });
    }
  }, {
    key: "deselect",
    value: function deselect(id) {
      if (id === undefined || id === null) {
        return;
      }
      var _this$state$getLatest2 = this.state.getLatestValue(),
        selectedIds = _this$state$getLatest2.selectedIds;
      if (!selectedIds.has(id)) {
        return;
      }
      var next = new Set(selectedIds);
      next.delete(id);
      this.state.partialNext({
        selectedIds: next
      });
    }
  }, {
    key: "toggle",
    value: function toggle(id) {
      if (id === undefined || id === null) {
        return;
      }
      var _this$state$getLatest3 = this.state.getLatestValue(),
        selectedIds = _this$state$getLatest3.selectedIds;
      if (selectedIds.has(id)) {
        this.deselect(id);
      } else {
        this.select(id);
      }
    }
  }]);
}();
var selectIsSelectionEmpty = state => ({
  isSelectionEmpty: state.selectedIds.size === 0
});
var useIsSelectionEmpty = store => (0, _useStateStore.useStateStore)(store.state, selectIsSelectionEmpty).isSelectionEmpty;
exports.useIsSelectionEmpty = useIsSelectionEmpty;
var useIsSelected = (store, id) => {
  var selector = (0, _react.useCallback)(state => ({
    isSelected: state.selectedIds.has(id)
  }), [id]);
  return (0, _useStateStore.useStateStore)(store.state, selector).isSelected;
};
exports.useIsSelected = useIsSelected;
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