完成neditor重构
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commit
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@ -1,479 +0,0 @@
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/**
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* neditor
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* @author yutent<yutent@doui.cc>
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* @date 2019/07/05 13:44:10
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*/
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'use strict'
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const log = console.log
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import iconList from './icon'
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const ACTTION = {
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bold: 'bold',
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italic: 'italic',
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under: 'underline',
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delete: 'strikeThrough',
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left: 'justifyLeft',
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center: 'justifyCenter',
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right: 'justifyRight',
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image: 'insertImage',
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font: 'fontSize',
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color: 'foreColor',
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link: 'createLink',
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ordered: 'insertOrderedList',
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unordered: 'insertUnorderedList'
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}
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const DEFAULT_TOOLS = [
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'font',
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'color',
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'bold',
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'italic',
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'under',
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'delete',
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'ordered',
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'unordered',
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'left',
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'center',
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'right',
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'link',
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'image'
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]
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export default class Nedtior extends HTMLElement {
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// 监听属性变化
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static get observedAttributes() {
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return ['toolbar', 'value']
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}
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constructor() {
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super()
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this.root = this.attachShadow({ mode: 'open' })
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this.render()
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this.__TOOLBAR__ = this.root.children[2]
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this.__FONT__ = this.root.children[3]
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this.__COLOR__ = this.root.children[4]
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this.__LINK__ = this.root.children[5]
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this.__LINK_BTN__ = this.__LINK__.querySelector('span')
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this.__EDITOR__ = this.root.lastElementChild
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}
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render() {
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this.root.innerHTML = `
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<style>
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* {box-sizing: border-box;}
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:host {
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position: relative;
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display:flex;
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flex-flow: column wrap;
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min-width: 200px;
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min-height: 100px;
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border: 1px solid #e7e8eb;
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border-radius: 4px;
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font-size: 14px;
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}
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.tool-bar {
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display: flex;
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height: 34px;
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padding: 5px;
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line-height: 24px;
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border-bottom: 1px solid #e7e8eb;
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}
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.tool-bar span {
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position: relative;
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overflow: hidden;
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display: flex;
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justify-content: center;
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align-items: center;
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width: 24px;
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height: 24px;
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margin: 0 3px;
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border-radius: 3px;
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}
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.tool-bar span:hover {background: #f7f8fb}
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.tool-bar span input {position: absolute;width: 100%;
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height: 100%;opacity:0}
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.tool-bar .icon {
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overflow: hidden;
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width: 70%;
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height: 70%;
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fill: currentColor;
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color: #62778d
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}
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.editor {
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flex: 1;
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overflow:hidden;
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overflow-y: auto;
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max-height:360px;
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padding:5px 8px;
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font-size: 14px;
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outline: none;
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}
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.editor img {max-width: 100%;}
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.font-layer, .color-layer, .link-layer {
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visibility: hidden;
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position: absolute;
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left: 0;
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top: 0;
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z-index:99;
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width: 80px;
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padding: 5px 0;
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line-height:25px;
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background: #fff;
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box-shadow: 0 0 8px rgba(0,0,0,.2);
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font-size: 13px;
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user-select: none;
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opacity: 0;
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transition:all ease-in-out .2s;
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}
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.font-layer.fadein {visibility: visible;top: 34px;opacity: 1;}
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.font-layer span {display: block;padding:0 8px;}
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.font-layer span:hover {background: #f7f8fb;}
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.color-layer {display: flex;flex-flow:row wrap;left: 30px;;width: 96px;}
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.color-layer.fadein {visibility: visible;top: 34px;opacity: 1;}
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.color-layer span {width:20px;height:20px;margin:2px;background: #f30;}
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.color-layer span:nth-child(1){background: #f3f5fb}
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.color-layer span:nth-child(2){background: #dae1e9}
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.color-layer span:nth-child(3){background: #62778d}
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.color-layer span:nth-child(4){background: #58d68d}
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.color-layer span:nth-child(5){background: #3fc2a7}
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.color-layer span:nth-child(6){background: #52a3de}
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.color-layer span:nth-child(7){background: #ac61ce}
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.color-layer span:nth-child(8){background: #ffb618}
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.color-layer span:nth-child(9){background: #e67e22}
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.color-layer span:nth-child(10){background: #ff5061}
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.color-layer span:nth-child(11){background: #ff0000}
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.color-layer span:nth-child(12){background: #000000}
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.link-layer {display:flex;align-items:center;left:330px;width:180px;padding:8px;}
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.link-layer input {width:120px;height:20px;margin-right: 8px;padding:0 5px;border: 1px solid #e7e8eb;outline: none;}
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.link-layer span {height:20px;padding:0 5px;;line-height:20px;border-radius:4px;background:#dae1e9;text-align: center;font-size: 12px;}
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.link-layer.fadein {visibility: visible;top: 34px;opacity: 1;}
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</style>
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<svg aria-hidden="true" style="overflow:hidden;position: absolute;width:0;height:0">
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${iconList
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.map(
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_ =>
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`<symbol id="icon-${_.key}" viewBox="0 0 1024 1024"><path d="${
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_.path
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}" /></symbol>`
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)
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.join('')}
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</svg>
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<section class="tool-bar">
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${this._parseTools()}
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</section>
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<div class="font-layer">
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<span data-size="6">大号字体</span>
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<span data-size="5">中号字体</span>
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<span data-size="3">小号字体</span>
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</div>
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<div class="color-layer">
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<span data-color="#f3f5fb"></span>
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<span data-color="#dae1e9"></span>
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<span data-color="#62778d"></span>
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<span data-color="#58d68d"></span>
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<span data-color="#3fc2a7"></span>
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<span data-color="#52a3de"></span>
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<span data-color="#ac61ce"></span>
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<span data-color="#ffb618"></span>
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<span data-color="#e67e22"></span>
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<span data-color="#ff5061"></span>
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<span data-color="#ff0000"></span>
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<span data-color="#000000"></span>
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</div>
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<div class="link-layer">
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<input placeholder="请输入链接地址">
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<span>插入</span>
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</div>
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<div contenteditable="true" class="editor" spellcheck="false"></div>
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`
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}
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// 解析工具栏
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_parseTools() {
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const tools = this.tools || DEFAULT_TOOLS
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return tools
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.map(
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it =>
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`<span data-act="${it}"><svg class="icon" aria-hidden="true"><use xlink:href="#icon-${it}"/></svg>${
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it === 'image' ? '<input type="file">' : ''
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}</span>`
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)
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.join('')
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}
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get value() {
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return this.__EDITOR__.innerHTML
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}
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set value(val) {
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if (this.__EDITOR__ && this.__EDITOR__.innerHTML !== val) {
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this.__EDITOR__.innerHTML = val
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}
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}
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set toolbar(val) {
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if (val && Array.isArray(val)) {
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this.tools = val
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if (this.__TOOLBAR__) {
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if (this.tools.length) {
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this.__TOOLBAR__.style.display = 'flex'
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this.__TOOLBAR__.innerHTML = this._parseTools()
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} else {
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this.__TOOLBAR__.style.display = 'none'
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}
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}
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}
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}
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// 保存选中
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saveSelection() {
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var gs = this.root.getSelection()
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if (gs.getRangeAt && gs.rangeCount) {
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this.__SELECT__ = gs.getRangeAt(0)
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}
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}
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// 清除选中并重置选中
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restoreSelection() {
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var gs = this.root.getSelection()
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if (this.__SELECT__) {
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try {
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gs.removeAllRanges()
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} catch (err) {}
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gs.addRange(this.__SELECT__)
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}
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}
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// 执行命令
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exec(cmd, val = '') {
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document.execCommand(cmd, false, val)
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}
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// 处理图片
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_handleImage(file) {
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this.dispatchEvent(
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new CustomEvent('upload', {
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detail: {
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file,
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send: link => {
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this.__EDITOR__.focus()
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this.restoreSelection()
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this.exec(ACTTION.image, link)
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this.saveSelection()
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// 修正插入的图片,宽度不得超出容器
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this.__EDITOR__.querySelectorAll('img').forEach(_ => {
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_.style.maxWidth = '100%'
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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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connectedCallback() {
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const LINK_INPUT = this.__LINK__.querySelector('input')
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const FILE_INPUT = this.__TOOLBAR__.querySelector('input')
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document.execCommand('styleWithCSS', null, true)
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// 这里有一个彩蛋
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if (FILE_INPUT) {
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FILE_INPUT.addEventListener(
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'change',
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ev => {
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this._handleImage(FILE_INPUT.files[0])
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},
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false
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)
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}
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// 工具栏点击事件
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this.__toolFn = ev => {
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if (ev.target === ev.currentTarget) {
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return
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}
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let target = ev.target
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while (target.tagName !== 'SPAN') {
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target = target.parentNode
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}
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var act = target.dataset.act
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var val = ''
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switch (act) {
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case 'font':
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this.__COLOR__.classList.remove('fadein')
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this.__LINK__.classList.remove('fadein')
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if (this.__FONT__.classList.contains('fadein')) {
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this.__FONT__.classList.remove('fadein')
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} else {
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this.__FONT__.classList.add('fadein')
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}
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break
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case 'color':
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this.__LINK__.classList.remove('fadein')
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this.__FONT__.classList.remove('fadein')
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if (this.__COLOR__.classList.contains('fadein')) {
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this.__COLOR__.classList.remove('fadein')
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} else {
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this.__COLOR__.classList.add('fadein')
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}
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break
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case 'link':
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this.__COLOR__.classList.remove('fadein')
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this.__FONT__.classList.remove('fadein')
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if (this.__LINK__.classList.contains('fadein')) {
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this.__LINK__.classList.remove('fadein')
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} else {
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this.__LINK__.classList.add('fadein')
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}
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break
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case 'image':
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// 这里不作任何处理
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break
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default:
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this.__EDITOR__.focus()
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this.restoreSelection()
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this.exec(ACTTION[act])
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this.saveSelection()
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}
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}
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// 字体大小设置
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this.__fontFn = ev => {
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if (ev.target === ev.currentTarget) {
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return
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}
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this.__FONT__.classList.remove('fadein')
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this.__EDITOR__.focus()
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this.restoreSelection()
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this.exec(ACTTION.font, ev.target.dataset.size)
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this.saveSelection()
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}
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// 颜色
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this.__colorFn = ev => {
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if (ev.target === ev.currentTarget) {
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return
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}
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this.__COLOR__.classList.remove('fadein')
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this.__EDITOR__.focus()
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this.restoreSelection()
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this.exec(ACTTION.color, ev.target.dataset.color)
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this.saveSelection()
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}
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// 超链接
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this.__linkFn = ev => {
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if (LINK_INPUT.value) {
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this.__LINK__.classList.remove('fadein')
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this.__EDITOR__.focus()
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this.restoreSelection()
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this.exec(ACTTION.link, LINK_INPUT.value)
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this.saveSelection()
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LINK_INPUT.value = ''
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}
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}
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//监听鼠标事件的,以缓存选中状态
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this.__mouseFn = ev => {
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this.__FONT__.classList.remove('fadein')
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this.__COLOR__.classList.remove('fadein')
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this.__LINK__.classList.remove('fadein')
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this.saveSelection()
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}
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// 粘贴板事件
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this.__pasteFn = ev => {
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ev.preventDefault()
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var txt = ev.clipboardData.getData('text/plain')
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var items = ev.clipboardData.items
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if (txt) {
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return this.exec('insertText', txt)
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}
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if (items && items.length) {
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let blob = null
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for (let it of items) {
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if (it.type.indexOf('image') > -1) {
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blob = it.getAsFile()
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}
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}
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this._handleImage(blob)
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}
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}
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this.__TOOLBAR__.addEventListener('click', this.__toolFn, false)
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this.__FONT__.addEventListener('click', this.__fontFn, false)
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this.__COLOR__.addEventListener('click', this.__colorFn, false)
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this.__LINK_BTN__.addEventListener('click', this.__linkFn, false)
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this.__EDITOR__.addEventListener('mouseup', this.__mouseFn, false)
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this.__EDITOR__.addEventListener('paste', this.__pasteFn, false)
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this.__observer = new MutationObserver(_ => {
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this.dispatchEvent(
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new CustomEvent('updated', {
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detail: this.value
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})
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)
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})
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this.__observer.observe(this.__EDITOR__, {
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childList: true,
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subtree: true,
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characterData: true
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})
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}
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disconnectedCallback() {
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this.__TOOLBAR__.removeEventListener('click', this.__toolFn)
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this.__FONT__.removeEventListener('click', this.__fontFn)
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this.__COLOR__.removeEventListener('click', this.__colorFn)
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this.__LINK_BTN__.removeEventListener('click', this.__linkFn)
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this.__EDITOR__.removeEventListener('mouseup', this.__mouseFn)
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this.__EDITOR__.removeEventListener('paste', this.__pasteFn)
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this.__observer.disconnect()
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}
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attributeChangedCallback(name, old, val) {
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switch (name) {
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case 'toolbar':
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if (typeof val === 'string') {
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try {
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val = val.split(',')
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} catch (err) {}
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}
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this.toolbar = val
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break
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case 'value':
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this.value = val
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break
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default:
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break
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}
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}
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}
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customElements.define('do-neditor', Nedtior)
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@ -259,7 +259,7 @@ export default class Neditor {
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var ct = this.root.children[1]
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this.__TOOLBAR__ = ct.children[0]
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this.__EDITOR__ = ct.children[1]
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this.__EDITOR__ = ct.children[1].firstElementChild
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this.__FONT__ = ct.children[2]
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this.__COLOR__ = ct.children[3]
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|
@ -272,9 +272,7 @@ export default class Neditor {
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}
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set value(val) {
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if (this.__EDITOR__ && this.__EDITOR__.innerHTML !== val) {
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this.__EDITOR__.innerHTML = val
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}
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this.__EDITOR__.innerHTML = val
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}
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_updateToolbar() {
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|
@ -354,6 +352,7 @@ export default class Neditor {
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// 工具栏点击事件
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this._toolFn = bind(this.__TOOLBAR__, 'click', ev => {
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this.restoreSelection()
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if (ev.target === ev.currentTarget) {
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return
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}
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|
@ -452,6 +451,12 @@ export default class Neditor {
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this.saveSelection()
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})
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clickOutside(this, ev => {
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this.__FONT__.classList.remove('fadein')
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this.__COLOR__.classList.remove('fadein')
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this.__LINK__.classList.remove('fadein')
|
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})
|
||||
|
||||
// 粘贴板事件
|
||||
this.__pasteFn = bind(this.__EDITOR__, 'paste', ev => {
|
||||
ev.preventDefault()
|
||||
|
|
Reference in New Issue