sgauthier
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93 lines
3.1 KiB
JavaScript
93 lines
3.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.wrapConnectorHooks = wrapConnectorHooks;
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var _invariant = require("@react-dnd/invariant");
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var _react = require("react");
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function throwIfCompositeComponentElement(element) {
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// Custom components can no longer be wrapped directly in React DnD 2.0
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// so that we don't need to depend on findDOMNode() from react-dom.
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if (typeof element.type === 'string') {
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return;
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}
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var displayName = element.type.displayName || element.type.name || 'the component';
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throw new Error('Only native element nodes can now be passed to React DnD connectors.' + "You can either wrap ".concat(displayName, " into a <div>, or turn it into a ") + 'drag source or a drop target itself.');
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}
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function wrapHookToRecognizeElement(hook) {
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return function () {
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var elementOrNode = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
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// When passed a node, call the hook straight away.
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if (!(0, _react.isValidElement)(elementOrNode)) {
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var node = elementOrNode;
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hook(node, options); // return the node so it can be chained (e.g. when within callback refs
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// <div ref={node => connectDragSource(connectDropTarget(node))}/>
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return node;
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} // If passed a ReactElement, clone it and attach this function as a ref.
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// This helps us achieve a neat API where user doesn't even know that refs
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// are being used under the hood.
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var element = elementOrNode;
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throwIfCompositeComponentElement(element); // When no options are passed, use the hook directly
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var ref = options ? function (node) {
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return hook(node, options);
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} : hook;
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return cloneWithRef(element, ref);
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};
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}
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function wrapConnectorHooks(hooks) {
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var wrappedHooks = {};
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Object.keys(hooks).forEach(function (key) {
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var hook = hooks[key]; // ref objects should be passed straight through without wrapping
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if (key.endsWith('Ref')) {
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wrappedHooks[key] = hooks[key];
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} else {
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var wrappedHook = wrapHookToRecognizeElement(hook);
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wrappedHooks[key] = function () {
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return wrappedHook;
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};
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}
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});
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return wrappedHooks;
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}
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function setRef(ref, node) {
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if (typeof ref === 'function') {
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ref(node);
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} else {
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ref.current = node;
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}
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}
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function cloneWithRef(element, newRef) {
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var previousRef = element.ref;
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(0, _invariant.invariant)(typeof previousRef !== 'string', 'Cannot connect React DnD to an element with an existing string ref. ' + 'Please convert it to use a callback ref instead, or wrap it into a <span> or <div>. ' + 'Read more: https://reactjs.org/docs/refs-and-the-dom.html#callback-refs');
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if (!previousRef) {
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// When there is no ref on the element, use the new ref directly
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return (0, _react.cloneElement)(element, {
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ref: newRef
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});
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} else {
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return (0, _react.cloneElement)(element, {
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ref: function ref(node) {
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setRef(previousRef, node);
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setRef(newRef, node);
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}
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});
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}
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} |