react-qml/dist/common/Anchor.js

React QML

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isAnchorLineProp = isAnchorLineProp;
exports.isAnchorItemProp = isAnchorItemProp;
exports.isAnchorProp = isAnchorProp;
exports.default = exports.ParentAnchor = exports.Anchor = exports.AnchorLineRef = void 0;

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }

function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var ANCHOR_LINES = ['left', 'top', 'right', 'bottom', 'horizontalCenter', 'verticalCenter', 'baseline'];
var ANCHOR_ITEM_REF = ['fill', 'centerIn'];

function isAnchorLineProp(key) {
  return ANCHOR_LINES.indexOf(key) > -1;
}

function isAnchorItemProp(key) {
  return ANCHOR_ITEM_REF.indexOf(key) > -1;
}

function isAnchorProp(key) {
  return isAnchorLineProp(key) || isAnchorItemProp(key);
}

var AbstractAnchorRef =
/*#__PURE__*/
function () {
  function AbstractAnchorRef() {
    var qmlElement = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;

    _classCallCheck(this, AbstractAnchorRef);

    _defineProperty(this, "qmlElement", void 0);

    _defineProperty(this, "subscriptions", []);

    this.qmlElement = qmlElement;
  }

  _createClass(AbstractAnchorRef, [{
    key: "processSubscriptions",
    value: function processSubscriptions() {
      var _this = this;

      if (!this.isReady()) {
        throw new Error('Anchor not ready');
      }

      this.subscriptions.forEach(function (_ref) {
        var source = _ref.source,
            sourceProp = _ref.sourceProp;
        source.anchors[sourceProp] = _this.value();
      });
    }
  }, {
    key: "setQmlElement",
    value: function setQmlElement(qmlElement) {
      if (this.qmlElement != null) {
        throw new Error('Anchor ref cannot be used twice');
      }

      this.qmlElement = qmlElement;
      this.processSubscriptions();
    }
  }, {
    key: "isReady",
    value: function isReady() {
      return this.qmlElement != null;
    }
  }, {
    key: "addSubscription",
    value: function addSubscription(source, sourceProp) {
      this.subscriptions.push({
        source: source,
        sourceProp: sourceProp
      });

      if (this.qmlElement) {
        source.anchors[sourceProp] = this.value();
      }
    }
  }, {
    key: "removeSubscription",
    value: function removeSubscription(source, sourceProp) {
      for (var index = 0; index < this.subscriptions.length; index++) {
        var subscription = this.subscriptions[index];

        if (subscription.source === source && subscription.sourceProp === sourceProp) {
          // found
          this.subscriptions.splice(index, 1);
          // early return
          return;
        }
      }
    }
  }]);

  return AbstractAnchorRef;
}();

var AnchorLineRef =
/*#__PURE__*/
function (_AbstractAnchorRef) {
  _inherits(AnchorLineRef, _AbstractAnchorRef);

  function AnchorLineRef(line) {
    var _this2;

    var qmlElement = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

    _classCallCheck(this, AnchorLineRef);

    _this2 = _possibleConstructorReturn(this, _getPrototypeOf(AnchorLineRef).call(this, qmlElement));

    _defineProperty(_assertThisInitialized(_this2), "line", void 0);

    _this2.line = line;
    return _this2;
  }

  _createClass(AnchorLineRef, [{
    key: "value",
    value: function value() {
      if (this.qmlElement) {
        return this.qmlElement[this.line];
      }

      return undefined;
    }
  }, {
    key: "type",
    value: function type() {
      return 'anchor_line';
    }
  }]);

  return AnchorLineRef;
}(AbstractAnchorRef);

exports.AnchorLineRef = AnchorLineRef;

var Anchor =
/*#__PURE__*/
function (_AbstractAnchorRef2) {
  _inherits(Anchor, _AbstractAnchorRef2);

  function Anchor() {
    var _this3;

    _classCallCheck(this, Anchor);

    _this3 = _possibleConstructorReturn(this, _getPrototypeOf(Anchor).call(this));

    _defineProperty(_assertThisInitialized(_this3), "id", void 0);

    _defineProperty(_assertThisInitialized(_this3), "left", void 0);

    _defineProperty(_assertThisInitialized(_this3), "horizontalCenter", void 0);

    _defineProperty(_assertThisInitialized(_this3), "right", void 0);

    _defineProperty(_assertThisInitialized(_this3), "top", void 0);

    _defineProperty(_assertThisInitialized(_this3), "verticalCenter", void 0);

    _defineProperty(_assertThisInitialized(_this3), "baseline", void 0);

    _defineProperty(_assertThisInitialized(_this3), "bottom", void 0);

    _this3.id = Symbol(); // anchor lines

    _this3.left = new AnchorLineRef('left');
    _this3.horizontalCenter = new AnchorLineRef('horizontalCenter');
    _this3.right = new AnchorLineRef('right');
    _this3.top = new AnchorLineRef('top');
    _this3.verticalCenter = new AnchorLineRef('verticalCenter');
    _this3.baseline = new AnchorLineRef('baseline');
    _this3.bottom = new AnchorLineRef('bottom');
    return _this3;
  }

  _createClass(Anchor, [{
    key: "setQmlElement",
    value: function setQmlElement(qmlElement) {
      _get(_getPrototypeOf(Anchor.prototype), "setQmlElement", this).call(this, qmlElement);

      this.left.setQmlElement(qmlElement);
      this.horizontalCenter.setQmlElement(qmlElement);
      this.right.setQmlElement(qmlElement);
      this.top.setQmlElement(qmlElement);
      this.verticalCenter.setQmlElement(qmlElement);
      this.baseline.setQmlElement(qmlElement);
      this.bottom.setQmlElement(qmlElement);
    }
  }, {
    key: "value",
    value: function value() {
      if (this.qmlElement) {
        return this.qmlElement;
      }

      return undefined;
    }
  }, {
    key: "type",
    value: function type() {
      return 'anchor';
    }
  }], [{
    key: "createRef",
    value: function createRef() {
      return new Anchor();
    }
  }]);

  return Anchor;
}(AbstractAnchorRef);

exports.Anchor = Anchor;

var ParentAnchor =
/*#__PURE__*/
function () {
  function ParentAnchor() {
    _classCallCheck(this, ParentAnchor);
  }

  _createClass(ParentAnchor, null, [{
    key: "addSubscription",
    value: function addSubscription(childElement, childPropName, parentAnchorRef) {
      var parentPropName = undefined; // parse parentAnchorRef first

      if (parentAnchorRef && parentAnchorRef.length > 0 && parentAnchorRef !== 'parent') {
        var parts = parentAnchorRef.split('.');

        if (parts.length === 2 && parts[0] === 'parent') {
          if (!isAnchorProp(parts[1])) {
            console.warn("Invalid anchor reference: ".concat(parts[1]));
            return;
          }

          parentPropName = parts[1];
        }
      }

      var onTargetChanged = function onTargetChanged() {
        ParentAnchor.updateAnchors(childElement, childPropName, parentPropName);
      };

      ParentAnchor.parentAnchorSubscriptions.push({
        source: childElement,
        sourceProp: childPropName,
        targetProp: parentPropName,
        onTargetChanged: onTargetChanged
      });

      if (childElement.parent) {
        ParentAnchor.updateAnchors(childElement, childPropName, parentPropName);
      }

      childElement.parentChanged.connect(onTargetChanged);
    }
  }, {
    key: "removeSubscription",
    value: function removeSubscription(childElement, childPropName) {
      for (var index = 0; index < ParentAnchor.parentAnchorSubscriptions.length; index++) {
        var subscription = ParentAnchor.parentAnchorSubscriptions[index];

        if (subscription.source === childElement && subscription.sourceProp === childPropName) {
          // found
          if (subscription.onTargetChanged && childElement.parentChanged) {
            childElement.parentChanged.disconnect(subscription.onTargetChanged);
          }

          ParentAnchor.parentAnchorSubscriptions.splice(index, 1);
          // early return
          return;
        }
      }
    }
  }]);

  return ParentAnchor;
}();

exports.ParentAnchor = ParentAnchor;

_defineProperty(ParentAnchor, "parentAnchorSubscriptions", []);

_defineProperty(ParentAnchor, "updateAnchors", function (childElement, childPropName, parentPropName) {
  if (!childElement.parent) {
    // console.log('ChildElement has no parent', childElement);
    return;
  }

  if (childPropName === 'fill' || childPropName === 'centerIn') {
    childElement.anchors[childPropName] = childElement.parent;
  } else {
    if (!parentPropName) {
      console.warn('Undefined anchor reference');
      return;
    }

    childElement.anchors[childPropName] = childElement.parent[parentPropName];
  }
});

var _default = Anchor;
exports.default = _default;