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import { Node } from '@tiptap/core';
import { Plugin, PluginKey } from '@tiptap/pm/state';
import { Decoration, DecorationSet } from '@tiptap/pm/view';
import { isValidColorExpression } from '~/lib/utils/color_utils';
import { PARSE_HTML_PRIORITY_HIGHEST } from '../constants';
const colorExpressionTypes = ['#', 'hsl', 'rgb'];
const isValidColor = (color) => {
if (!colorExpressionTypes.some((type) => color.toLowerCase().startsWith(type))) {
return false;
}
return isValidColorExpression(color);
};
const highlightColors = (doc) => {
const decorations = [];
doc.descendants((node, position) => {
const { text, marks } = node;
if (!text || marks.length === 0 || marks[0].type.name !== 'code' || !isValidColor(text)) {
return;
}
const from = position;
const to = from + text.length;
const decoration = Decoration.inline(from, to, {
class: 'gl-display-inline-flex gl-align-items-center content-editor-color-chip',
style: `--gl-color-chip-color: ${text}`,
});
decorations.push(decoration);
});
return DecorationSet.create(doc, decorations);
};
export const colorDecoratorPlugin = new Plugin({
key: new PluginKey('colorDecorator'),
state: {
init(_, { doc }) {
return highlightColors(doc);
},
apply(transaction, oldState) {
return transaction.docChanged ? highlightColors(transaction.doc) : oldState;
},
},
props: {
decorations(state) {
return this.getState(state);
},
},
});
export default Node.create({
name: 'colorChip',
parseHTML() {
return [
{
tag: '.gfm-color_chip',
ignore: true,
priority: PARSE_HTML_PRIORITY_HIGHEST,
},
];
},
addProseMirrorPlugins() {
return [colorDecoratorPlugin];
},
});
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