uptime-kuma/src/components/settings/Appearance.vue

<template>
    <div>
        <div class="my-4">
            <label for="language" class="form-label">
                {{ $t("Language") }}
            </label>
            <select id="language" v-model="$i18n.locale" class="form-select">
                <option
                    v-for="(lang, i) in $i18n.availableLocales"
                    :key="`Lang${i}`"
                    :value="lang"
                >
                    {{ $i18n.messages[lang].languageName }}
                </option>
            </select>
        </div>
        <div class="my-4">
            <label for="timezone" class="form-label">{{ $t("Theme") }}</label>
            <div>
                <div
                    class="btn-group"
                    role="group"
                    aria-label="Basic checkbox toggle button group"
                >
                    <input
                        id="btncheck1"
                        v-model="$root.userTheme"
                        type="radio"
                        class="btn-check"
                        name="theme"
                        autocomplete="off"
                        value="light"
                    />
                    <label class="btn btn-outline-primary" for="btncheck1">
                        {{ $t("Light") }}
                    </label>

                    <input
                        id="btncheck2"
                        v-model="$root.userTheme"
                        type="radio"
                        class="btn-check"
                        name="theme"
                        autocomplete="off"
                        value="dark"
                    />
                    <label class="btn btn-outline-primary" for="btncheck2">
                        {{ $t("Dark") }}
                    </label>

                    <input
                        id="btncheck3"
                        v-model="$root.userTheme"
                        type="radio"
                        class="btn-check"
                        name="theme"
                        autocomplete="off"
                        value="auto"
                    />
                    <label class="btn btn-outline-primary" for="btncheck3">
                        {{ $t("Auto") }}
                    </label>
                </div>
            </div>
        </div>
        <div class="my-4">
            <label class="form-label">{{ $t("Theme - Heartbeat Bar") }}</label>
            <div>
                <div
                    class="btn-group"
                    role="group"
                    aria-label="Basic checkbox toggle button group"
                >
                    <input
                        id="btncheck4"
                        v-model="$root.userHeartbeatBar"
                        type="radio"
                        class="btn-check"
                        name="heartbeatBarTheme"
                        autocomplete="off"
                        value="normal"
                    />
                    <label class="btn btn-outline-primary" for="btncheck4">
                        {{ $t("Normal") }}
                    </label>

                    <input
                        id="btncheck5"
                        v-model="$root.userHeartbeatBar"
                        type="radio"
                        class="btn-check"
                        name="heartbeatBarTheme"
                        autocomplete="off"
                        value="bottom"
                    />
                    <label class="btn btn-outline-primary" for="btncheck5">
                        {{ $t("Bottom") }}
                    </label>

                    <input
                        id="btncheck6"
                        v-model="$root.userHeartbeatBar"
                        type="radio"
                        class="btn-check"
                        name="heartbeatBarTheme"
                        autocomplete="off"
                        value="none"
                    />
                    <label class="btn btn-outline-primary" for="btncheck6">
                        {{ $t("None") }}
                    </label>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import { setPageLocale } from "../../util-frontend";
export default {
    watch: {
        "$i18n.locale"() {
            localStorage.locale = this.$i18n.locale;
            setPageLocale();
        },
    },
};
</script>

<style lang="scss" scoped>
@import "../../assets/vars.scss";

.btn-check:active + .btn-outline-primary,
.btn-check:checked + .btn-outline-primary,
.btn-check:hover + .btn-outline-primary {
    color: #fff;

    .dark & {
        color: #000;
    }
}

.dark {
    .list-group-item {
        background-color: $dark-bg2;
        color: $dark-font-color;
    }
}
</style>