markdown-it-alerts/index.js at master · nunof07/markdown-it-alerts · GitHub

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'use strict';

var container = require('markdown-it-container');

module.exports = function alerts_plugin(md, options) {
	var containerOpenCount = 0;
	var links = options ? options.links : true;
	init();
	return;

	function setupContainer(name) {
        md.use(container, name, {
            render: function (tokens, idx) {
                if (tokens[idx].nesting === 1) {
                    containerOpenCount += 1;
                    return '<div class="alert alert-' + name + '" role="alert">\n';
                } else {
                    containerOpenCount -= 1;
                    return '</div>\n';
                }
            }
        });
    }

    function isContainerOpen() {
        return containerOpenCount > 0;
    }

    function selfRender(tokens, idx, options, env, self) {
        return self.renderToken(tokens, idx, options);
    }

	function setupLinks() {
		var defaultRender = md.renderer.rules.link_open || selfRender;

		md.renderer.rules.link_open = function (tokens, idx, options, env, self) {
			if (isContainerOpen()) {
				tokens[idx].attrPush(['class', 'alert-link']);
			}

			return defaultRender(tokens, idx, options, env, self);
		};
	}

	function init() {
        setupContainer('success');
        setupContainer('info');
        setupContainer('warning');
        setupContainer('danger');

		if (links) {
			setupLinks();
		}
	}
};