60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
import { Extension, Plugin } from 'tiptap'
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import { Decoration, DecorationSet } from 'prosemirror-view'
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export default class Placeholder extends Extension {
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get name() {
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return 'placeholder'
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}
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get defaultOptions() {
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return {
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emptyNodeClass: 'is-empty',
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emptyNodeText: 'Write something...',
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showOnlyWhenEditable: true,
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}
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}
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get update() {
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return view => {
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view.updateState(view.state)
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}
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}
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get plugins() {
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return [
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new Plugin({
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props: {
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decorations: ({ doc, plugins }) => {
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const editablePlugin = plugins.find(plugin => plugin.key.startsWith('editable$'))
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const editable = editablePlugin.props.editable()
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const active = editable || !this.options.showOnlyWhenEditable
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if (!active) {
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return false
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}
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const decorations = []
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const completelyEmpty = doc.textContent === '' && doc.childCount <= 1 && doc.content.size <= 2
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doc.descendants((node, pos) => {
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if (!completelyEmpty) {
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return
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}
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const decoration = Decoration.node(pos, pos + node.nodeSize, {
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class: this.options.emptyNodeClass,
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'data-empty-text': this.options.emptyNodeText,
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})
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decorations.push(decoration)
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})
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return DecorationSet.create(doc, decorations)
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},
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},
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}),
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]
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}
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}
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