/* eslint-disable no-underscore-dangle */
import { each } from 'lodash';
/* 快捷键说明:
* 快捷生效模块命名规范:
* 1.路由模块-执行this.$hotKey.set('ModuleName', {'F9': ()=>{...callback() }}). ModuleName:'Pos.order'
* 2.弹窗模块-执行Dialog name=ModuleName,并传入:hotkeys='callbackObj'. ModuleName:'PosDialog.settlement'
* 3.说明-初始设计为键盘的'down'事件,后增加了'up'事件(本不应该使用),所有快捷键均变成了两次触发(down和up)方法会被调用两次, 目前暂不做处理.
*/
/* 按键字典
* 主键盘: 大写和小写字母, 数字键, 功能键
* 小键盘: 数字键,功能键
* F功能键
* Ctrl-添加'.ctrl', Shift-添加'.alt'
*/
const KEYCODE = {
// 65: "a", 66: "b", 67: "c", 68: "d", 69: "e", 70: "f", 71: "g",
// 72: "h", 73: "i", 74: "j", 75: "k", 76: "l", 77: "m", 78: "n",
// 79: "o", 80: "p", 81: "q", 82: "r", 83: "s", 84: "t", 85: "u",
// 86: "v", 87: "w", 88: "x", 89: "y", 90: "z",
65: 'A',
66: 'B',
67: 'C',
68: 'D',
69: 'E',
70: 'F',
71: 'G',
72: 'H',
73: 'I',
74: 'J',
75: 'K',
76: 'L',
77: 'M',
78: 'N',
79: 'O',
80: 'P',
81: 'Q',
82: 'R',
83: 'S',
84: 'T',
85: 'U',
86: 'V',
87: 'W',
88: 'X',
89: 'Y',
90: 'Z',
// 主键盘数字键
48: '0',
49: '1',
50: '2',
51: '3',
52: '4',
53: '5',
54: '6',
55: '7',
56: '8',
57: '9',
// 小键盘数字键
96: '0',
97: '1',
98: '2',
99: '3',
100: '4',
101: '5',
102: '6',
103: '7',
104: '8',
105: '9',
// 功能键
16: 'Shift',
17: 'Ctrl',
18: 'Alt',
// 主键盘其他
8: 'BackSpace',
9: 'Tab',
13: 'Enter',
27: 'Esc',
32: 'Space',
33: 'PgUp',
34: 'PgDn',
35: 'End',
36: 'Home',
45: 'Insert',
187: '+',
189: '-',
188: ',',
190: '.',
191: '/',
219: '{',
220: '|',
221: '}',
// 小键盘其他
108: 'Enter',
106: '*',
107: '+',
109: '-',
110: '.',
111: '/',
// F功能键
112: 'F1',
113: 'F2',
114: 'F3',
115: 'F4',
116: 'F5',
117: 'F6',
118: 'F7',
119: 'F8',
120: 'F9',
121: 'F10',
122: 'F11',
123: 'F12',
38: '↑',
40: '↓',
37: '←',
39: '→',
};
/* 快捷键构建类 */
export default class HotKey {
constructor() {
// 快捷键 存储'执行回调'的对象
this.hotkeys = {};
// 快捷键 模块名称合集
this.modules = [];
// this.currentModule = null
this.uphotkeys = {};
}
static isStop = false
stop() {
this.constructor.isStop = true;
}
start() {
this.constructor.isStop = false;
}
// 初始化
init() {
document.onkeydown = (event) => {
// 获取事件相关属性, 阻止浏览器 BackSpace键,返回url
let _vReadOnly;
let _vDisabled;
const _obj = event.target || event.srcElement;
const _t = _obj.type || _obj.getAttribute('type');
_vReadOnly = _obj.readOnly;
_vDisabled = _obj.disabled;
// 处理undefined值情况
_vReadOnly = (_vReadOnly == undefined) ? false : _vReadOnly;
_vDisabled = (_vDisabled == undefined) ? true : _vDisabled;
// 事件源类型为密码或单行、多行文本的，并且readOnly属性为true或disabled属性为true的，则退格键失效
const _flag1 = (_t === 'password' || _t === 'text' || _t === 'textarea' || _t === 'number')
&& (_vReadOnly === true || _vDisabled === true);
// 当敲Backspace键时，事件源类型非密码或单行、多行文本的，则退格键失效
const _flag2 = _t !== 'password' && _t !== 'text' && _t !== 'textarea' && _t !== 'number';
// 屏蔽input和textarea的Enter键默认事件, 同时屏蔽button按钮的Enter
if (event.keyCode === 13 || (event.keyCode === 13 && $(event.target).is('button'))) {
// 但是 恢复 饿了么的弹框组件的确认按钮,所需要的回车键功能恢复,从这加一个判断条件如果是饿么的组件就不屏蔽
if (!$(event.target).hasClass('el-button')) {
event.preventDefault();
}
}
// 屏蔽 F1~F11案件的浏览器默认事件
// 键盘按下 Ctrl + F1~F6 时触发
// BackSpace键入非input或textarea(或状态为readOnly,disabled), 阻止url返回
if (
event.keyCode >= 112 && event.keyCode <= 122
|| (event.keyCode >= 112 && event.keyCode <= 117 && event.ctrlKey)
|| (event.keyCode == 8 && (_flag1 || _flag2))
) {
event.preventDefault();
}
// 执行事件触发
this.trigger(event);
};
document.onkeyup = (event) => {
this.trigger(event, 'up');
};
}
// 设置模块名及回调(执行方法)
set(moduleName, options, type = 'down') {
const index = this.modules.indexOf(moduleName);
if (index != -1) {
this.modules.splice(index, 1);
}
this.modules.push(moduleName);
if (type === 'down') {
if (options) {
each(options, (handler, name) => {
this.hotkeys[`${moduleName}.${name}`] = handler;
});
}
} else if (type === 'up') {
if (options) {
each(options, (handler, name) => {
this.uphotkeys[`${moduleName}.${name}`] = handler;
});
}
}
}
findMethod(name, callback, moduleName, type = 'down') {
if (this.modules.length) {
const curModule = this.modules[this.modules.length - 1]; // 最后一个设置热键的界面模块名
const method = `${curModule}.${name}`;
let hotkeys = {};
if (type === 'down') {
hotkeys = this.hotkeys;
} else if (type === 'up') {
hotkeys = this.uphotkeys;
}
if (hotkeys[method]) {
callback(hotkeys[method]);
} else if (curModule.length) {
const modules = curModule.split('.');
modules.pop();
const prevMethod = `${modules.join('.')}.${name}`;
if (hotkeys[prevMethod]) {
callback(hotkeys[prevMethod]);
}
}
}
}
// 事件触发方法
trigger(event, type = 'down') {
if (this.constructor.isStop || $('.el-message-box__wrapper:visible').length) {
return;
}
this.findMethod(
KEYCODE[event.keyCode] + (event.ctrlKey ? '.ctrl' : '') + (event.altKey ? '.alt' : ''),
(handler) => {
handler(event);
},
null,
type,
);
}
// 移除关闭模块(基于模块名)
removeCurrentModule(name) {
if (this.modules[this.modules.length - 1] == name) {
this.modules.pop();
}
if (name.indexOf('AddPayHotkey') != -1) {
this.modules.forEach((item, index, arr) => {
item == name && arr.splice(index, arr.length - 1);
});
}
}
}
