@turbox3d/command-manager/es/Command.js

Large-scale productivity application command management library

import _toConsumableArray from "@babel/runtime/helpers/esm/toConsumableArray";
import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import _possibleConstructorReturn from "@babel/runtime/helpers/esm/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/esm/getPrototypeOf";
import _inherits from "@babel/runtime/helpers/esm/inherits";
function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
import { Interaction } from './Interaction';
export var Command = /*#__PURE__*/function (_Interaction) {
  function Command(holder, parent) {
    var _this;
    _classCallCheck(this, Command);
    _this = _callSuper(this, Command);
    _this.holder = holder;
    _this.parent = parent;
    _this.$children = {};
    _this.activeChildren = [];
    var activeFunc = _this.active.bind(_this);
    var disposeFunc = _this.dispose.bind(_this);
    _this.active = function () {
      if (_this.parent && !_this.holder.isCommandActive(_this)) {
        // 仅作为激活的子 Command 记录在父 Command 上
        _this.parent.onChildActive(_this);
      }
      // 先执行自定义的 active 的相关工作
      activeFunc.apply(void 0, arguments);
    };
    _this.dispose = function () {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }
      var _a;
      // 如果自身是应用在 Mgr 上的 Command，则要清理掉
      if (_this.holder.isCommandActive(_this)) {
        _this.holder.clearCommand();
      } else {
        // 将自己改为注销状态
        (_a = _this.parent) === null || _a === void 0 ? void 0 : _a.onChildDispose(_this);
      }
      // 便利激活的子节点，置为注销状态
      _toConsumableArray(_this.activeChildren).forEach(function (child) {
        return child.dispose.apply(child, args);
      });
      // 处理自定义工作
      disposeFunc.apply(void 0, args);
    };
    return _this;
  }
  /**
   * 应用当前 Command 及其子级，该方法不仅会强制激活当前 Command 及其子级，还会使它们的交互事件生效
   * 同时只能有一个 Command 节点处于应用状态（兄弟节点的交互事件是互斥的）
   * 永远不用重写该方法，相关初始化逻辑请在 active 接口中编码
   */
  _inherits(Command, _Interaction);
  return _createClass(Command, [{
    key: "apply",
    value: function apply() {
      this.holder.toggleCommand(this);
      this.active.apply(this, arguments);
    }
    /**
     * 激活当前 Command 及其子级，为即将到来的交互事件做好准备
     */
  }, {
    key: "active",
    value: function active() {
      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        args[_key2] = arguments[_key2];
      }
      // 将子 command 也激活
      Object.values(this.$children).forEach(function (command) {
        return command.active.apply(command, args);
      });
    }
    /**
     * 注销当前 Command 及其子级，同时将停止响应该指令及子级的交互事件
     */
  }, {
    key: "dispose",
    value: function dispose() {
      //
    }
  }, {
    key: "distributeEvent",
    value: function distributeEvent(eventType, ev, event, tools) {
      // step 1 先让子 Commands 处理事件
      // Object.values(this.$children).forEach(command => command.distributeEvent(eventType, ev, event));
      this.activeChildren.forEach(function (command) {
        return command.distributeEvent(eventType, ev, event, tools);
      });
      // step2 自身处理事件
      this.distributeToSelf(eventType, ev, event, tools);
    }
  }, {
    key: "onChildActive",
    value: function onChildActive(command) {
      if (this.activeChildren.indexOf(command) === -1) {
        this.activeChildren.push(command);
      }
    }
  }, {
    key: "onChildDispose",
    value: function onChildDispose(command) {
      var index = this.activeChildren.indexOf(command);
      if (index !== -1) {
        this.activeChildren.splice(index, 1);
      }
    }
  }]);
}(Interaction);