306 lines
7.1 KiB
Vue
306 lines
7.1 KiB
Vue
<script lang="ts" setup>
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import { message } from 'ant-design-vue/lib';
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import { ref, reactive, onMounted, onBeforeUnmount, nextTick } from 'vue';
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import { FitAddon } from '@xterm/addon-fit';
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import { Terminal } from '@xterm/xterm';
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import '@xterm/xterm/css/xterm.css';
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import { RESULT_CODE_ERROR } from '@/constants/result-constants';
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import { OptionsType, WS } from '@/plugins/ws-websocket';
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const ws = new WS();
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const emit = defineEmits(['connect', 'close', 'message']);
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const props = defineProps({
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/**终端ID，必传 */
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id: {
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type: String,
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required: true,
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},
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/**连接主机ID，必传 */
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hostId: {
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type: String,
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required: true,
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},
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/**窗口单行字符数 */
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cols: {
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type: Number,
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default: 120,
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},
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/**窗口行数 */
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rows: {
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type: Number,
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default: 128,
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},
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/**禁止输入 */
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disable: {
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type: Boolean,
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default: false,
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},
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/**初始发送命令 */
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initCmd: {
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type: [String, Boolean],
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default: false,
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},
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});
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/**终端输入DOM节点实例对象 */
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const terminalDom = ref<HTMLElement | undefined>(undefined);
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/**终端输入实例对象 */
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const terminal = ref<any>(null);
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/**终端输入文字状态 */
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const terminalState = reactive<{
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/**输入值 */
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text: string;
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/**历史 */
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history: {
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label?: string;
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value: string;
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}[];
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}>({
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text: '',
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history: [
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{
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value: 'help',
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},
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{
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value: 'quit',
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},
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{
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value: 'list ver',
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},
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{
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value: 'list lic',
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},
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],
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});
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/**自动完成根据输入项进行筛选 */
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function fnAutoCompleteFilter(input: string, option: any) {
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return option.value.toLowerCase().indexOf(input.toLowerCase()) >= 0;
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}
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/**自动完成按键触发 */
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function fnAutoCompleteKeydown(evt: any) {
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if (evt.key === 'Enter') {
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// 阻止默认的换行行为
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evt.preventDefault();
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// 按下 Shift + Enter 键时换行
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if (evt.shiftKey) {
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// 插入换行符
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const textarea = evt.target;
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const start = textarea.selectionStart;
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const end = textarea.selectionEnd;
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const text = textarea.value;
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textarea.value = text.substring(0, start) + '\n' + text.substring(end);
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terminalState.text = textarea.value;
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// 更新光标位置
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textarea.selectionStart = textarea.selectionEnd = start + 1;
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} else {
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// ws未连接
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if (ws.state() !== WebSocket.OPEN) {
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message.error('disconnected');
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return;
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}
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// 输入历史
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const cmdStr = terminalState.text.trim().replace(/\n/g, '\r\n');
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const hisIndex = terminalState.history.findIndex(
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item => item.value === cmdStr
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);
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if (hisIndex === -1) {
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terminalState.history.push({
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value: cmdStr,
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});
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}
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// 发送文本
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terminal.value.scrollToBottom();
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terminal.value.writeln(cmdStr);
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ws.send({
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requestId: `telnet_${props.hostId}`,
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type: 'telnet',
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data: `${cmdStr}\r\n'`,
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});
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terminalState.text = ' ';
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// 退出登录
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if (['q', 'quit', 'exit'].includes(cmdStr)) {
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setTimeout(() => {
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ws.close();
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}, 1000);
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}
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}
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}
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}
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/**终端输入渲染 */
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function handleRanderXterm(container: HTMLElement | undefined) {
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if (!container) return;
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const xterm = new Terminal({
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lineHeight: 1.2,
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fontSize: 12,
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fontFamily: "Monaco, Menlo, Consolas, 'Courier New', monospace",
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theme: {
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background: '#000000',
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},
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cursorBlink: true, // 光标闪烁
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cursorStyle: 'block',
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scrollback: 1000,
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scrollSensitivity: 15,
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tabStopWidth: 4,
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disableStdin: props.disable, // 禁止输入
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});
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// 挂载
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xterm.open(container);
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// 自适应尺寸
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const fitAddon = new FitAddon();
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xterm.loadAddon(fitAddon);
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// 创建 ResizeObserver 实例
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var observer = new ResizeObserver(entries => {
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fitAddon.fit();
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});
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// 监听元素大小变化
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observer.observe(container);
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terminal.value = xterm;
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}
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/**连接打开后回调 */
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function wsOpen(ev: any) {
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// console.info('wsOpen', ev);
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nextTick(() => {
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handleRanderXterm(terminalDom.value);
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// 连接事件
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emit('connect', {
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timeStamp: ev.timeStamp,
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cols: terminal.value.cols,
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rows: terminal.value.rows,
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hostId: props.hostId,
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id: props.id,
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});
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// 初始发送命令
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if (typeof props.initCmd === 'string') {
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ws.send({
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requestId: `telnet_${props.hostId}`,
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type: 'telnet',
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data: `${props.initCmd}\r\n`,
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});
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}
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});
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}
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/**连接错误后回调 */
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function wsError(ev: any) {
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console.error('wsError', ev);
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if (terminal.value != null) {
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let message = 'disconnected';
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terminal.value.write(`\x1b[31m${message}\x1b[m\r\n`);
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} else if (terminalDom.value) {
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terminalDom.value.style.background = '#000';
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terminalDom.value.style.color = '#ff4d4f';
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terminalDom.value.style.height = '60%';
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terminalDom.value.innerText = 'disconnected';
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}
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}
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/**连接关闭后回调 */
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function wsClose(code: number) {
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// console.warn('wsClose', code);
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if (terminal.value != null) {
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let message = 'disconnected';
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terminal.value.write(`\x1b[31m${message}\x1b[m\r\n`);
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}
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// 关闭事件
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emit('close', {
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code: code,
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hostId: props.hostId,
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id: props.id,
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});
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}
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/**接收消息后回调 */
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function wsMessage(res: Record<string, any>) {
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emit('message', res);
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// console.log('wsMessage', res);
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const { code, requestId, data } = res;
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if (code === RESULT_CODE_ERROR) {
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console.warn(res.msg);
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return;
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}
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if (!requestId) return;
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if (terminal.value != null) {
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// terminal.value.write(data.trim().replace(/\n/g, "\r\n"));
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// 是否n结尾
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if (/[\r\n]$/.test(data)) {
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terminal.value.writeln(data.trim().replace(/\n/g, '\r\n'));
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} else {
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terminal.value.write(data.replace(/\n/g, '\r\n'));
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}
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}
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}
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onMounted(() => {
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if (props.hostId) {
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// 建立链接
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const options: OptionsType = {
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url: '/ws/telnet',
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params: {
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hostId: props.hostId,
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cols: props.cols,
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rows: props.rows,
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},
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onmessage: wsMessage,
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onerror: wsError,
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onopen: wsOpen,
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onclose: wsClose,
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};
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ws.connect(options);
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}
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});
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onBeforeUnmount(() => {
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ws.close();
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});
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// 给组件设置属性 ref="xxxTerminal"
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// setup内使用 const xxxTerminal = ref();
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defineExpose({
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/**发送方法 */
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send: (data: string) => {
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ws.send({
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requestId: `telnet_${props.hostId}`,
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type: 'telnet',
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data: `${data}\r\n`,
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});
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},
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});
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</script>
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<template>
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<div class="terminal">
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<div ref="terminalDom" style="height: 78%" :id="id"></div>
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<a-auto-complete
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v-model:value="terminalState.text"
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:dropdown-match-select-width="500"
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style="width: 100%"
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:options="terminalState.history"
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:filter-option="fnAutoCompleteFilter"
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@keydown="fnAutoCompleteKeydown"
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>
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<a-textarea
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:auto-size="{ minRows: 1, maxRows: 6 }"
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placeholder="Execute command. Shift+Enter to line feed, Enter to send"
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/>
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</a-auto-complete>
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</div>
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</template>
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<style lang="css" scoped>
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.terminal {
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width: 100%;
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height: 100%;
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}
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</style>
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