wangzhibo
2026-07-16 b57020623cf0c946706573bf102e548c3a544423
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import {
    defineComponent,
    h,
    nextTick,
    onMounted,
    PropType,
    reactive,
    ref,
    toRaw,
    watch
} from "vue";
import { isEmpty } from "lodash-es";
import { useRefs, useDialog } from "../../hooks";
 
export default defineComponent({
    name: "cl-form-tabs",
 
    props: {
        modelValue: [String, Number],
        labels: {
            type: Array,
            default: () => []
        },
        justify: {
            type: String as PropType<
                "start" | "end" | "left" | "right" | "center" | "justify" | "match-parent"
            >,
            default: "center"
        },
        type: {
            type: String as PropType<"card" | "default">,
            default: "default"
        }
    },
 
    emits: ["update:modelValue", "change"],
 
    setup(props, { emit, expose }) {
        const { refs, setRefs } = useRefs();
 
        // 标识
        const active = ref("");
 
        // 切换列表
        const list = ref<any[]>([]);
 
        // 下划线
        const line = reactive({
            width: "",
            offsetLeft: "",
            transform: "",
            backgroundColor: ""
        });
 
        function update(val: any) {
            if (!val) {
                return false;
            }
 
            nextTick(() => {
                const index = list.value.findIndex((e) => e.value === val);
                const item = refs[`tab-${index}`];
 
                if (item) {
                    // 下划线位置
                    line.width = item.offsetWidth + "px";
                    line.transform = `translateX(${item.offsetLeft}px)`;
 
                    // 靠左位置
                    let left = item.offsetLeft + item.clientWidth / 2 - 414 / 2 + 15;
 
                    if (left < 0) {
                        left = 0;
                    }
 
                    // 设置滚动距离
                    refs.tabs.scrollLeft = left;
                }
            });
 
            active.value = val;
            emit("update:modelValue", val);
        }
 
        // 监听绑定值变化
        watch(() => props.modelValue, update);
 
        // 监听值修改
        watch(
            () => active.value,
            (val) => {
                emit("change", val);
            }
        );
 
        useDialog({
            onFullscreen() {
                update(active.value);
            }
        });
 
        onMounted(function () {
            if (!isEmpty(props.labels)) {
                list.value = props.labels;
                update(isEmpty(props.modelValue) ? list.value[0].value : props.modelValue);
            }
        });
 
        expose({
            active,
            list,
            line,
            update
        });
 
        return () => {
            return (
                <div class={["cl-form-tabs", `cl-form-tabs--${props.type}`]}>
                    <div
                        class="cl-form-tabs__wrap"
                        style={{ textAlign: props.justify }}
                        ref={setRefs("tabs")}>
                        <ul>
                            {list.value.map((e, i) => {
                                return (
                                    <li
                                        ref={setRefs(`tab-${i}`)}
                                        class={{ "is-active": e.value === active.value }}
                                        onClick={() => {
                                            update(e.value);
                                        }}>
                                        {e.icon && <el-icon>{h(toRaw(e.icon))}</el-icon>}
                                        <span>{e.label}</span>
                                    </li>
                                );
                            })}
 
                            {line.width && <div class="cl-form-tabs__line" style={line}></div>}
                        </ul>
                    </div>
                </div>
            );
        };
    }
});