/*
|
命令，封装 document.execCommand
|
*/
|
|
import $ from '../util/dom-core.js'
|
import { UA } from '../util/util.js'
|
|
// 构造函数
|
function Command(editor) {
|
this.editor = editor
|
}
|
|
// 修改原型
|
Command.prototype = {
|
constructor: Command,
|
|
// 执行命令
|
do: function (name, value) {
|
const editor = this.editor
|
|
// 使用 styleWithCSS
|
if (!editor._useStyleWithCSS) {
|
document.execCommand('styleWithCSS', null, true)
|
editor._useStyleWithCSS = true
|
}
|
|
// 如果无选区，忽略
|
if (!editor.selection.getRange()) {
|
return
|
}
|
|
// 恢复选取
|
editor.selection.restoreSelection()
|
|
// 执行
|
const _name = '_' + name
|
if (this[_name]) {
|
// 有自定义事件
|
this[_name](value)
|
} else {
|
// 默认 command
|
this._execCommand(name, value)
|
}
|
|
// 修改菜单状态
|
editor.menus.changeActive()
|
|
// 最后，恢复选取保证光标在原来的位置闪烁
|
editor.selection.saveRange()
|
editor.selection.restoreSelection()
|
|
// 触发 onchange
|
editor.change && editor.change()
|
},
|
|
// 自定义 insertHTML 事件
|
_insertHTML: function (html) {
|
const editor = this.editor
|
const range = editor.selection.getRange()
|
|
if (this.queryCommandSupported('insertHTML')) {
|
// W3C
|
this._execCommand('insertHTML', html)
|
} else if (range.insertNode) {
|
// IE
|
range.deleteContents()
|
range.insertNode($(html)[0])
|
} else if (range.pasteHTML) {
|
// IE <= 10
|
range.pasteHTML(html)
|
}
|
},
|
|
// 插入 elem
|
_insertElem: function ($elem) {
|
const editor = this.editor
|
const range = editor.selection.getRange()
|
|
if (range.insertNode) {
|
range.deleteContents()
|
range.insertNode($elem[0])
|
}
|
},
|
|
// 封装 execCommand
|
_execCommand: function (name, value) {
|
document.execCommand(name, false, value)
|
},
|
|
// 封装 document.queryCommandValue
|
queryCommandValue: function (name) {
|
return document.queryCommandValue(name)
|
},
|
|
// 封装 document.queryCommandState
|
queryCommandState: function (name) {
|
return document.queryCommandState(name)
|
},
|
|
// 封装 document.queryCommandSupported
|
queryCommandSupported: function (name) {
|
return document.queryCommandSupported(name)
|
}
|
}
|
|
export default Command
|
