MhsDesign.LiveInspectorJsEvents

Neos Ui Plugin for Inspector change events in the iframe.

Demo

https://user-images.githubusercontent.com/85400359/150694045-375e3e79-0a9e-4d92-864e-f873a053b1a4.mp4

Install

composer require "mhsdesign/liveinspectorjsevents:~2.0.0"

Tutorial for a self made implementation:

Change the class of a spacer to its property value:

your yaml:

your fusion:

prototype(MhsDesign.LiveInspectorDemo:Content.Spacer) < prototype(Neos.Neos:ContentComponent) {
    height = ${q(node).property('height')}
    renderer = afx`
        <div class={['spacer', props.height]}></div>
    `
}

your js:

// all changers will be registered here:
const changer = {}
changer['MhsDesign.LiveInspectorDemo:Content.Spacer'] = (node, property) => {
    const {name, updated, previous} = property;
    /** type HTMLElement */
    const el = neos.guestFrame.findElementByNode(node);
    switch (name) {
        case 'height':
            // sometimes the ui wraps an div around the html - sometimes not.
            const spacerDiv = querySelectClosest(el, '.spacer')
            if (previous !== '') {
                spacerDiv.classList.remove(previous)
            }
            if (updated !== '') {
                spacerDiv.classList.add(updated)
            }
    }
}

// call the changer defined for a node by nodeType
const updateNode = (node, property) => {
    if (typeof changer[node.nodeType] !== "undefined") {
        changer[node.nodeType](node, property);
    }
    // alternative:
    // switch (node.nodeType) {
    //     case 'MhsDesign.LiveInspectorDemo:Content.Spacer':
    //         changeSpacer(node, property)
    // }
}

// register to the events
document.addEventListener('Neos.NodeCommit', (event) => {
    const {node, property} = event.detail;
    updateNode(node, property)
})

document.addEventListener('Neos.NodeDiscard', (event) => {
    const {node, properties} = event.detail;
    properties.forEach(property => {
        updateNode(node, property)
    })
})

// helper
const querySelectClosest = (element, selector) => {
    if (element.matches(selector)) {
        return element;
    }
    return element.querySelector(selector)
}

Usage

listen to the events (in the iframe):

document.addEventListener('Neos.NodeCommit', (event) => {
    const {node, property} = event.detail;

    // the updated property value and also the previous.
    // {name: 'title', updated: 'abcd', previous: 'abc'}
    console.log(property);

    // experimental: see below:
    console.log(neos.guestFrame.findElementByNode(node));
})

document.addEventListener('Neos.NodeDiscard', (event) => {
    const {node, properties} = event.detail;

    // all reset properties in a list.
    // [{name: 'title', updated: 'abc', previous: 'abcd'}]
    console.log(properties);
})

A Javascript node object in the Neos UI looks like:

node = {
    "identifier": "99257f0c-70f0-405b-a82b-fa8e375c23fb",
    "contextPath": "/sites/root/main/node-l461lxh2i1a77",
    "nodeType": "Vendor.Site:Content.Heading",
    ...
    "properties": {
        // also some private "_" properties ... like "_hidden"
        ...
        "title": "my String Old"
    }
}

Get the dom element of the corresponding node:

The following functionality or way of handling this is experimental, and could eventually change.

the global window.neos object is extended by this package and exposes under guestFrame this function, which makes it possible to get the dom element by node object:

neos.guestFrame.findElementByNode(node)

Under the hood it does something like: (But try to avoid using the following snippet directly as it uses eventually purely internal knowledge.)

const findElementByNode = (node) => {
    const {contextPath} = node;
    // https://github.com/neos/neos-ui/blob/7ede460ec1bb8dd4455fc636b875c137d112e89d/packages/neos-ui-guest-frame/src/dom.js#L76
    return  document.querySelector(`[data-__neos-node-contextpath="${contextPath}"]`);
}

Internals

More dev notes (about internals, not so much about the events above):

it sometimes helps to have the Redux DevTools installed: https://chrome.google.com/webstore/detail/redux-devtools/lmhkpmbekcpmknklioeibfkpmmfibljd?hl=de

The API from the Neos UI.

// the commit action (when you change a property of a node) looks like:
commitAction = {
    "type": "@neos/neos-ui/UI/Inspector/COMMIT",
    "payload": {
        "propertyId": "title",
        "value": "my String",
        ...
        "focusedNode": node, // we get something like in the node above
        }
    }
}

// when we dicard the changes, we wont know directly wich changes where made before.
discardAction = {
    "type": "@neos/neos-ui/UI/Inspector/DISCARD",
    "payload": {
        "focusedNodeContextPath": "/sites/root/main/node-l461lxh2i1a77@user-mhs"
        // we can get all the node details from the CR via:
        // selectors.CR.Nodes.nodeByContextPath(state)(focusedNodeContextPath)
    }
}

// good to know, how to alway get the current node:
const state = yield select();
const focusedNode = selectors.CR.Nodes.focusedSelector(state)

// or
const focusedNode = yield select(selectors.CR.Nodes.focusedSelector);