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| <template>
<div>
<script :id="id" :name="name" type="text/plain"></script>
</div>
</template>
<script>
import config from './ueditor.config'
// 一个简单的事件订阅发布的实现,取代原始Event对象,提升IE下的兼容性
class LoadEvent {
constructor () {
this.listeners = {}
}
on (eventName, callback) {
this.listeners[eventName] === undefined
? (this.listeners[eventName] = [])
: ''
this.listeners[eventName].push(callback)
}
emit (eventName) {
this.listeners[eventName] &&
this.listeners[eventName].forEach(callback => callback())
}
}
export default {
name: 'VueNeditorWrap',
data () {
return {
id:
'editor' +
Math.random()
.toString()
.slice(-10),
editor: null,
isReady: false, // 实例是否已经ready
readyValue: '', // ready之后给编辑器设置的值
defaultConfig: {
UEDITOR_HOME_URL: './public/NEditor/',
enableAutoSave: false
}
}
},
props: {
value: {
type: String,
default: ''
},
config: {
type: Object,
default: function () {
return {}
}
},
init: {
type: Function,
default: function () {
return () => {}
}
},
destroy: Boolean,
name: String
},
computed: {
mixedConfig () {
return Object.assign({}, this.defaultConfig, config)
}
},
methods: {
// 添加自定义按钮
registerButton: ({ name, icon, tip, handler, UE = window.UE }) => {
UE.registerUI(name, (editor, name) => {
editor.registerCommand(name, {
execCommand: () => {
handler(editor, name)
}
})
const btn = new UE.ui.Button({
name,
title: tip,
cssRules: `background-image: url(${icon}) !important;background-size: cover;`,
onclick () {
editor.execCommand(name)
}
})
editor.addListener('selectionchange', () => {
const state = editor.queryCommandState(name)
if (state === -1) {
btn.setDisabled(true)
btn.setChecked(false)
} else {
btn.setDisabled(false)
btn.setChecked(state)
}
})
return btn
})
},
// 实例化编辑器之前-JS依赖检测
_beforeInitEditor (value) {
// console.log('_beforeInitEditor', value + '--')
// 准确判断ueditor.config.js和ueditor.all.js是否均已加载 仅加载完ueditor.config.js时UE对象和UEDITOR_CONFIG对象也存在,仅加载完ueditor.all.js时UEDITOR_CONFIG对象也存在,但为空对象
!!window.UE &&
!!window.UEDITOR_CONFIG &&
Object.keys(window.UEDITOR_CONFIG).length !== 0 &&
!!window.UE.getEditor
? this._initEditor(value)
: this._loadScripts().then(() => this._initEditor(value))
},
// 实例化编辑器
_initEditor (value) {
this.$nextTick(() => {
this.init()
this.editor = window.UE.getEditor(this.id, this.mixedConfig)
this.readyValue = value
this.editor.addListener('ready', () => {
this.isReady = true
this.$emit('ready', this.editor)
this.editor.setContent(this.readyValue)
this.editor.addListener('contentChange', () => {
// console.log('input', this.editor.getContent())
this.$emit('input', this.editor.getContent())
})
})
})
},
// 动态添加JS依赖
_loadScripts () {
// 确保多个实例同时渲染时不会重复创建SCRIPT标签
if (window.loadEnv) {
return new Promise((resolve, reject) => {
window.loadEnv.on('scriptsLoaded', function () {
resolve()
})
})
} else {
window.loadEnv = new LoadEvent()
return new Promise((resolve, reject) => {
// 如果在其他地方只引用ueditor.all.min.js，在加载ueditor.config.js之后仍需要重新加载ueditor.all.min.js，所以必须确保ueditor.config.js已加载
// this._loadService().then(() => this._loadConfig()).then(() => this._loadCore()).then(() => {
// window.loadEnv.emit("scriptsLoaded");
// resolve();
// });
const that = this
that._loadParse().then(() => that._loadConfig()).then(() => that._loadCore()).then(() => that._loadService()).then(() => {
window.loadEnv.emit('scriptsLoaded')
resolve()
}).catch(err => {
console.error(err)
})
})
}
},
_loadConfig () {
return new Promise((resolve, reject) => {
if (
!!window.UE &&
!!window.UEDITOR_CONFIG &&
Object.keys(window.UEDITOR_CONFIG).length !== 0
) {
resolve()
}
})
},
_loadService () {
return new Promise((resolve, reject) => {
let coreScript = document.createElement('script')
coreScript.type = 'text/javascript'
coreScript.src = this.mixedConfig.UEDITOR_HOME_URL + 'neditor.service.js'
document.getElementsByTagName('head')[0].appendChild(coreScript)
coreScript.onload = function () {
resolve()
}
})
},
_loadParse () {
return new Promise((resolve, reject) => {
let coreScript = document.createElement('script')
coreScript.type = 'text/javascript'
coreScript.src =
this.mixedConfig.UEDITOR_HOME_URL + 'neditor.parse.min.js'
document.getElementsByTagName('head')[0].appendChild(coreScript)
coreScript.onload = function () {
resolve()
}
})
},
_loadCore () {
return new Promise((resolve, reject) => {
resolve()
})
},
// 设置内容
_setContent (value) {
if (this.isReady) {
// console.log('setContentisReady', value)
value === this.editor.getContent() || this.editor.setContent(value)
} else {
// console.log('noisReady', value)
this.readyValue = value
}
}
},
beforeDestroy () {
if (this.destroy && this.editor && this.editor.destroy) {
this.editor.destroy()
}
},
// v-model语法糖实现
watch: {
value: {
handler (value) {
// console.log('vvv===', value)
this.editor ? this._setContent(value) : this._beforeInitEditor(value)
},
immediate: true
}
}
}
</script>
|