GrapesJS

# Layer Manager

GrapesJS - Layer Manager

The Layer Manager module is responsible to manage and display your Components as a tree.

WARNING

This guide is referring to GrapesJS v0.19.5 or higher

# Configuration

To change the default configurations you have to pass the layerManager option with the main configuration object.

const editor = grapesjs.init({
  ...
  layerManager: {
    ...
  }
});

You can check here the full list of available configuration options: Layer Manager Config (opens new window)

Layers are a direct representation of your components, therefore they will only be available once your components are loaded in the editor (eg. you might load your project data from a remote endpoint).

In your configuration, you're able to change the global behavior of layers (eg. make all the layers not sortable) and also decide which component layer should be used as a root.

const editor = grapesjs.init({
  ...
  layerManager: {
    // If the `root` is not specified or the component element is not found,
    // the main wrapper component will be used.
    root: '#my-custom-root',
    sortable: false,
    hidable: false,
  }
});

The configurations are mainly targeting the default UI provided by GrapesJS core, in case you need more control over the tree of your layers, you can read more in the Customization section below.

# Programmatic usage

If you need to manage layers programmatically you can use its APIs.

# Customization

By using the Layers API you're able to replace the default UI with your own implementation.

All you have to do is to indicate to the editor your intent to use a custom UI and then subscribe to a few events that allow you to properly update your UI.

const editor = grapesjs.init({
  // ...
  layerManager: {
    custom: true,
    // ...
  },
});

// Use this event to append your UI in the default container provided by GrapesJS.
// You can skip this event if you don't rely on the core panels and decide to
// place the UI in some other place.
editor.on('layer:custom', (props) => {
  // props.container (HTMLElement) - The default element where you can append your UI
});

// Triggered when the root layer is changed.
editor.on('layer:root', (root) => {
  // Update the root of your UI
});

// Triggered when a component is updated, this allows you to update specific layers.
editor.on('layer:component', (component) => {
  // Update the specific layer of your UI
});

In the example below we'll replicate most of the default functionality with our own implementation.

# Events

For a complete list of available events, you can check it here.

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