transfer-dom.js
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// Thanks to: https://github.com/airyland/vux/blob/v2/src/directives/transfer-dom/index.js
// Thanks to: https://github.com/calebroseland/vue-dom-portal
/**
* Get target DOM Node
* @param {(Node|string|Boolean)} [node=document.body] DOM Node, CSS selector, or Boolean
* @return {Node} The target that the el will be appended to
*/
function getTarget (node) {
if (node === void 0) {
node = document.body
}
if (node === true) { return document.body }
return node instanceof window.Node ? node : document.querySelector(node)
}
const directive = {
inserted (el, { value }, vnode) {
el.className = el.className ? el.className + ' v-transfer-dom' : 'v-transfer-dom';
const parentNode = el.parentNode;
const home = document.createComment('');
let hasMovedOut = false;
if (value !== false) {
parentNode.replaceChild(home, el); // moving out, el is no longer in the document
getTarget(value).appendChild(el); // moving into new place
hasMovedOut = true
}
if (!el.__transferDomData) {
el.__transferDomData = {
parentNode: parentNode,
home: home,
target: getTarget(value),
hasMovedOut: hasMovedOut
}
}
},
componentUpdated (el, { value }) {
// need to make sure children are done updating (vs. `update`)
const ref$1 = el.__transferDomData;
// homes.get(el)
const parentNode = ref$1.parentNode;
const home = ref$1.home;
const hasMovedOut = ref$1.hasMovedOut; // recall where home is
if (!hasMovedOut && value) {
// remove from document and leave placeholder
parentNode.replaceChild(home, el);
// append to target
getTarget(value).appendChild(el);
el.__transferDomData = Object.assign({}, el.__transferDomData, { hasMovedOut: true, target: getTarget(value) });
} else if (hasMovedOut && value === false) {
// previously moved, coming back home
parentNode.replaceChild(el, home);
el.__transferDomData = Object.assign({}, el.__transferDomData, { hasMovedOut: false, target: getTarget(value) });
} else if (value) {
// already moved, going somewhere else
getTarget(value).appendChild(el);
}
},
unbind: function unbind (el, binding) {
el.className = el.className.replace('v-transfer-dom', '')
if (el.__transferDomData.hasMovedOut === true) {
el.__transferDomData.parentNode && el.__transferDomData.parentNode.appendChild(el)
}
el.__transferDomData = null
}
};
export default directive;