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hotomoe/src/client/components/sequential-entrance.vue

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Vue
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<template>
<transition-group
name="staggered-fade"
tag="div"
:css="false"
@before-enter="beforeEnter"
@enter="enter"
@leave="leave"
mode="out-in"
appear
>
<slot></slot>
</transition-group>
</template>
<script lang="ts">
import Vue from 'vue';
export default Vue.extend({
props: {
delay: {
type: Number,
required: false,
default: 40
},
direction: {
type: String,
required: false,
default: 'down'
}
},
methods: {
beforeEnter(el) {
el.style.opacity = 0;
el.style.transform = this.direction === 'down' ? 'translateY(-64px)' : 'translateY(64px)';
},
enter(el, done) {
el.style.transition = [getComputedStyle(el).transition, 'transform 0.7s cubic-bezier(0.23, 1, 0.32, 1)', 'opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1)'].filter(x => x != '').join(',');
setTimeout(() => {
el.style.opacity = 1;
el.style.transform = 'translateY(0px)';
setTimeout(done, 700);
}, this.delay * el.dataset.index)
},
leave(el, done) {
setTimeout(() => {
el.style.opacity = 0;
el.style.transform = this.direction === 'down' ? 'translateY(64px)' : 'translateY(-64px)';
setTimeout(done, 700);
}, this.delay * el.dataset.index)
},
focus() {
this.$slots.default[0].elm.focus();
}
}
});
</script>
<style lang="scss">
.staggered-fade-move {
transition: transform 0.7s !important;
}
</style>