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完成neditor重构

old
宇天 2019-09-16 17:27:16 +08:00
parent a5f9a897f6
commit 33daf69bcb
2 changed files with 9 additions and 483 deletions

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

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@ -259,7 +259,7 @@ export default class Neditor {
var ct = this.root.children[1] var ct = this.root.children[1]
this.__TOOLBAR__ = ct.children[0] this.__TOOLBAR__ = ct.children[0]
this.__EDITOR__ = ct.children[1] this.__EDITOR__ = ct.children[1].firstElementChild
this.__FONT__ = ct.children[2] this.__FONT__ = ct.children[2]
this.__COLOR__ = ct.children[3] this.__COLOR__ = ct.children[3]
@ -272,9 +272,7 @@ export default class Neditor {
} }
set value(val) { set value(val) {
if (this.__EDITOR__ && this.__EDITOR__.innerHTML !== val) { this.__EDITOR__.innerHTML = val
this.__EDITOR__.innerHTML = val
}
} }
_updateToolbar() { _updateToolbar() {
@ -354,6 +352,7 @@ export default class Neditor {
// 工具栏点击事件 // 工具栏点击事件
this._toolFn = bind(this.__TOOLBAR__, 'click', ev => { this._toolFn = bind(this.__TOOLBAR__, 'click', ev => {
this.restoreSelection()
if (ev.target === ev.currentTarget) { if (ev.target === ev.currentTarget) {
return return
} }
@ -452,6 +451,12 @@ export default class Neditor {
this.saveSelection() this.saveSelection()
}) })
clickOutside(this, ev => {
this.__FONT__.classList.remove('fadein')
this.__COLOR__.classList.remove('fadein')
this.__LINK__.classList.remove('fadein')
})
// 粘贴板事件 // 粘贴板事件
this.__pasteFn = bind(this.__EDITOR__, 'paste', ev => { this.__pasteFn = bind(this.__EDITOR__, 'paste', ev => {
ev.preventDefault() ev.preventDefault()