slate-hyperscript
Version:
A hyperscript helper for creating Slate documents.
664 lines (618 loc) • 25.1 kB
JavaScript
;
var isPlainObject = require('is-plain-object');
var slate = require('slate');
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function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
/**
* A weak map to hold anchor tokens.
*/
var ANCHOR = new WeakMap();
/**
* A weak map to hold focus tokens.
*/
var FOCUS = new WeakMap();
/**
* All tokens inherit from a single constructor for `instanceof` checking.
*/
var Token = /*#__PURE__*/_createClass(function Token() {
_classCallCheck(this, Token);
});
/**
* Anchor tokens represent the selection's anchor point.
*/
var AnchorToken = /*#__PURE__*/function (_Token) {
_inherits(AnchorToken, _Token);
var _super = _createSuper(AnchorToken);
function AnchorToken() {
var _this;
var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, AnchorToken);
_this = _super.call(this);
_defineProperty(_assertThisInitialized(_this), "offset", void 0);
_defineProperty(_assertThisInitialized(_this), "path", void 0);
var offset = props.offset,
path = props.path;
_this.offset = offset;
_this.path = path;
return _this;
}
return _createClass(AnchorToken);
}(Token);
/**
* Focus tokens represent the selection's focus point.
*/
var FocusToken = /*#__PURE__*/function (_Token2) {
_inherits(FocusToken, _Token2);
var _super2 = _createSuper(FocusToken);
function FocusToken() {
var _this2;
var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, FocusToken);
_this2 = _super2.call(this);
_defineProperty(_assertThisInitialized(_this2), "offset", void 0);
_defineProperty(_assertThisInitialized(_this2), "path", void 0);
var offset = props.offset,
path = props.path;
_this2.offset = offset;
_this2.path = path;
return _this2;
}
return _createClass(FocusToken);
}(Token);
/**
* Add an anchor token to the end of a text node.
*/
var addAnchorToken = function addAnchorToken(text, token) {
var offset = text.text.length;
ANCHOR.set(text, [offset, token]);
};
/**
* Get the offset if a text node has an associated anchor token.
*/
var getAnchorOffset = function getAnchorOffset(text) {
return ANCHOR.get(text);
};
/**
* Add a focus token to the end of a text node.
*/
var addFocusToken = function addFocusToken(text, token) {
var offset = text.text.length;
FOCUS.set(text, [offset, token]);
};
/**
* Get the offset if a text node has an associated focus token.
*/
var getFocusOffset = function getFocusOffset(text) {
return FOCUS.get(text);
};
function ownKeys$1(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread$1(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys$1(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys$1(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
/**
* Resolve the descedants of a node by normalizing the children that can be
* passed into a hyperscript creator function.
*/
var STRINGS = new WeakSet();
var resolveDescendants = function resolveDescendants(children) {
var nodes = [];
var addChild = function addChild(child) {
if (child == null) {
return;
}
var prev = nodes[nodes.length - 1];
if (typeof child === 'string') {
var text = {
text: child
};
STRINGS.add(text);
child = text;
}
if (slate.Text.isText(child)) {
var c = child; // HACK: fix typescript complaining
if (slate.Text.isText(prev) && STRINGS.has(prev) && STRINGS.has(c) && slate.Text.equals(prev, c, {
loose: true
})) {
prev.text += c.text;
} else {
nodes.push(c);
}
} else if (slate.Element.isElement(child)) {
nodes.push(child);
} else if (child instanceof Token) {
var n = nodes[nodes.length - 1];
if (!slate.Text.isText(n)) {
addChild('');
n = nodes[nodes.length - 1];
}
if (child instanceof AnchorToken) {
addAnchorToken(n, child);
} else if (child instanceof FocusToken) {
addFocusToken(n, child);
}
} else {
throw new Error("Unexpected hyperscript child object: ".concat(child));
}
};
var _iterator = _createForOfIteratorHelper(children.flat(Infinity)),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var child = _step.value;
addChild(child);
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
return nodes;
};
/**
* Create an anchor token.
*/
function createAnchor(tagName, attributes, children) {
return new AnchorToken(attributes);
}
/**
* Create an anchor and a focus token.
*/
function createCursor(tagName, attributes, children) {
return [new AnchorToken(attributes), new FocusToken(attributes)];
}
/**
* Create an `Element` object.
*/
function createElement(tagName, attributes, children) {
return _objectSpread$1(_objectSpread$1({}, attributes), {}, {
children: resolveDescendants(children)
});
}
/**
* Create a focus token.
*/
function createFocus(tagName, attributes, children) {
return new FocusToken(attributes);
}
/**
* Create a fragment.
*/
function createFragment(tagName, attributes, children) {
return resolveDescendants(children);
}
/**
* Create a `Selection` object.
*/
function createSelection(tagName, attributes, children) {
var anchor = children.find(function (c) {
return c instanceof AnchorToken;
});
var focus = children.find(function (c) {
return c instanceof FocusToken;
});
if (!anchor || anchor.offset == null || anchor.path == null) {
throw new Error("The <selection> hyperscript tag must have an <anchor> tag as a child with `path` and `offset` attributes defined.");
}
if (!focus || focus.offset == null || focus.path == null) {
throw new Error("The <selection> hyperscript tag must have a <focus> tag as a child with `path` and `offset` attributes defined.");
}
return _objectSpread$1({
anchor: {
offset: anchor.offset,
path: anchor.path
},
focus: {
offset: focus.offset,
path: focus.path
}
}, attributes);
}
/**
* Create a `Text` object.
*/
function createText(tagName, attributes, children) {
var nodes = resolveDescendants(children);
if (nodes.length > 1) {
throw new Error("The <text> hyperscript tag must only contain a single node's worth of children.");
}
var _nodes = _slicedToArray(nodes, 1),
node = _nodes[0];
if (node == null) {
node = {
text: ''
};
}
if (!slate.Text.isText(node)) {
throw new Error("\n The <text> hyperscript tag can only contain text content as children.");
}
// COMPAT: If they used the <text> tag we want to guarantee that it won't be
// merge with other string children.
STRINGS["delete"](node);
Object.assign(node, attributes);
return node;
}
/**
* Create a top-level `Editor` object.
*/
var createEditor = function createEditor(makeEditor) {
return function (tagName, attributes, children) {
var otherChildren = [];
var selectionChild;
var _iterator2 = _createForOfIteratorHelper(children),
_step2;
try {
for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
var child = _step2.value;
if (slate.Range.isRange(child)) {
selectionChild = child;
} else {
otherChildren.push(child);
}
}
} catch (err) {
_iterator2.e(err);
} finally {
_iterator2.f();
}
var descendants = resolveDescendants(otherChildren);
var selection = {};
var editor = makeEditor();
Object.assign(editor, attributes);
editor.children = descendants;
// Search the document's texts to see if any of them have tokens associated
// that need incorporated into the selection.
var _iterator3 = _createForOfIteratorHelper(slate.Node.texts(editor)),
_step3;
try {
for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
var _step3$value = _slicedToArray(_step3.value, 2),
node = _step3$value[0],
path = _step3$value[1];
var anchor = getAnchorOffset(node);
var focus = getFocusOffset(node);
if (anchor != null) {
var _anchor = _slicedToArray(anchor, 1),
offset = _anchor[0];
selection.anchor = {
path: path,
offset: offset
};
}
if (focus != null) {
var _focus = _slicedToArray(focus, 1),
_offset = _focus[0];
selection.focus = {
path: path,
offset: _offset
};
}
}
} catch (err) {
_iterator3.e(err);
} finally {
_iterator3.f();
}
if (selection.anchor && !selection.focus) {
throw new Error("Slate hyperscript ranges must have both `<anchor />` and `<focus />` defined if one is defined, but you only defined `<anchor />`. For collapsed selections, use `<cursor />` instead.");
}
if (!selection.anchor && selection.focus) {
throw new Error("Slate hyperscript ranges must have both `<anchor />` and `<focus />` defined if one is defined, but you only defined `<focus />`. For collapsed selections, use `<cursor />` instead.");
}
if (selectionChild != null) {
editor.selection = selectionChild;
} else if (slate.Range.isRange(selection)) {
editor.selection = selection;
}
return editor;
};
};
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
/**
* The default creators for Slate objects.
*/
var DEFAULT_CREATORS = {
anchor: createAnchor,
cursor: createCursor,
editor: createEditor(slate.createEditor),
element: createElement,
focus: createFocus,
fragment: createFragment,
selection: createSelection,
text: createText
};
/**
* Create a Slate hyperscript function with `options`.
*/
var createHyperscript = function createHyperscript() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
var _options$elements = options.elements,
elements = _options$elements === void 0 ? {} : _options$elements;
var elementCreators = normalizeElements(elements);
var creators = _objectSpread(_objectSpread(_objectSpread({}, DEFAULT_CREATORS), elementCreators), options.creators);
var jsx = createFactory(creators);
return jsx;
};
/**
* Create a Slate hyperscript function with `options`.
*/
var createFactory = function createFactory(creators) {
var jsx = function jsx(tagName, attributes) {
for (var _len = arguments.length, children = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
children[_key - 2] = arguments[_key];
}
var creator = creators[tagName];
if (!creator) {
throw new Error("No hyperscript creator found for tag: <".concat(tagName, ">"));
}
if (attributes == null) {
attributes = {};
}
if (!isPlainObject.isPlainObject(attributes)) {
children = [attributes].concat(children);
attributes = {};
}
children = children.filter(function (child) {
return Boolean(child);
}).flat();
var ret = creator(tagName, attributes, children);
return ret;
};
return jsx;
};
/**
* Normalize a dictionary of element shorthands into creator functions.
*/
var normalizeElements = function normalizeElements(elements) {
var creators = {};
var _loop = function _loop() {
var props = elements[tagName];
if (_typeof(props) !== 'object') {
throw new Error("Properties specified for a hyperscript shorthand should be an object, but for the custom element <".concat(tagName, "> tag you passed: ").concat(props));
}
creators[tagName] = function (tagName, attributes, children) {
return createElement('element', _objectSpread(_objectSpread({}, props), attributes), children);
};
};
for (var tagName in elements) {
_loop();
}
return creators;
};
/**
* The default hyperscript factory that ships with Slate, without custom tags.
*/
var jsx = createHyperscript();
exports.createEditor = createEditor;
exports.createHyperscript = createHyperscript;
exports.createText = createText;
exports.jsx = jsx;
//# sourceMappingURL=index.js.map