import EventEmitter from 'eventemitter3';
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import logger from './logger';
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let debug = logger('quill:events');
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const EVENTS = ['selectionchange', 'mousedown', 'mouseup', 'click'];
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EVENTS.forEach(function(eventName) {
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document.addEventListener(eventName, (...args) => {
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[].slice.call(document.querySelectorAll('.ql-container')).forEach((node) => {
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// TODO use WeakMap
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if (node.__quill && node.__quill.emitter) {
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node.__quill.emitter.handleDOM(...args);
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}
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});
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});
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});
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class Emitter extends EventEmitter {
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constructor() {
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super();
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this.listeners = {};
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this.on('error', debug.error);
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}
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emit() {
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debug.log.apply(debug, arguments);
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super.emit.apply(this, arguments);
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}
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handleDOM(event, ...args) {
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(this.listeners[event.type] || []).forEach(function({ node, handler }) {
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if (event.target === node || node.contains(event.target)) {
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handler(event, ...args);
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}
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});
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}
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listenDOM(eventName, node, handler) {
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if (!this.listeners[eventName]) {
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this.listeners[eventName] = [];
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}
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this.listeners[eventName].push({ node, handler })
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}
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}
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Emitter.events = {
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EDITOR_CHANGE : 'editor-change',
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SCROLL_BEFORE_UPDATE : 'scroll-before-update',
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SCROLL_OPTIMIZE : 'scroll-optimize',
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SCROLL_UPDATE : 'scroll-update',
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SELECTION_CHANGE : 'selection-change',
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TEXT_CHANGE : 'text-change'
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};
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Emitter.sources = {
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API : 'api',
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SILENT : 'silent',
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USER : 'user'
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};
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export default Emitter;
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