OpenDTU-old/webapp/src/components/ThemeSwitcher.vue
2023-03-06 19:42:37 +01:00

106 lines
4.0 KiB
Vue

<template>
<li class="nav-item dropdown">
<button class="btn btn-link nav-link py-2 px-0 px-lg-2 dropdown-toggle d-flex align-items-center" id="bd-theme"
type="button" aria-expanded="false" data-bs-toggle="dropdown" data-bs-display="static"
aria-label="Toggle theme (auto)">
<BIconCircleHalf class="bi my-1 theme-icon-active" />
</button>
<ul class="dropdown-menu dropdown-menu-end">
<li>
<button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="light"
aria-pressed="false">
<BIconSunFill class="bi me-2 opacity-50 theme-icon" />
{{ $t('localeswitcher.Light') }}
</button>
</li>
<li>
<button type="button" class="dropdown-item d-flex align-items-center" data-bs-theme-value="dark"
aria-pressed="false">
<BIconMoonStarsFill class="bi me-2 opacity-50 theme-icon" />
{{ $t('localeswitcher.Dark') }}
</button>
</li>
<li>
<button type="button" class="dropdown-item d-flex align-items-center active" data-bs-theme-value="auto"
aria-pressed="true">
<BIconCircleHalf class="bi me-2 opacity-50 theme-icon" />
{{ $t('localeswitcher.Auto') }}
</button>
</li>
</ul>
</li>
</template>
<script lang="ts">
import { defineComponent } from 'vue';
import {
BIconCircleHalf,
BIconSunFill,
BIconMoonStarsFill,
} from 'bootstrap-icons-vue';
export default defineComponent({
name: "ThemeSwitcher",
components: {
BIconCircleHalf,
BIconSunFill,
BIconMoonStarsFill,
},
data() {
return {
storedTheme: 'auto',
};
},
methods: {
getPreferredTheme() {
if (this.storedTheme) {
return this.storedTheme;
}
return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
},
setTheme(theme: string) {
if (theme === 'auto' && window.matchMedia('(prefers-color-scheme: dark)').matches) {
document.documentElement.setAttribute('data-bs-theme', 'dark');
} else {
document.documentElement.setAttribute('data-bs-theme', theme);
}
},
showActiveTheme(theme: string) {
const activeThemeIcon = document.querySelector('.theme-icon-active');
const btnToActive = document.querySelector(`[data-bs-theme-value="${theme}"]`);
const svgOfActiveBtn = btnToActive?.querySelector('.theme-icon');
document.querySelectorAll('[data-bs-theme-value]').forEach(element => {
element.classList.remove('active');
})
btnToActive?.classList.add('active');
if (svgOfActiveBtn) {
activeThemeIcon?.replaceChildren('*', svgOfActiveBtn?.cloneNode(true));
}
},
},
mounted() {
this.storedTheme = localStorage.getItem('theme') || 'auto';
this.setTheme(this.getPreferredTheme());
this.showActiveTheme(this.getPreferredTheme());
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
if (this.storedTheme !== 'light' && this.storedTheme !== 'dark') {
this.setTheme(this.getPreferredTheme());
}
});
document.querySelectorAll('[data-bs-theme-value]')
.forEach(toggle => {
toggle.addEventListener('click', () => {
const theme = toggle.getAttribute('data-bs-theme-value') || 'auto';
localStorage.setItem('theme', theme);
this.setTheme(theme);
this.showActiveTheme(theme);
})
});
},
});
</script>