resources/js/components/TransitionCollapseHeight.vue
<!--
- TransitionCollapseHeight.vue
-
- Description-
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <https://www.gnu.org/licenses/>.
-
- @package LibreNMS
- @link https://www.librenms.org
- @copyright 2019 Tony Murray
- @author Tony Murray <murraytony@gmail.com>
-->
<template>
<transition
enter-active-class="enter-active"
leave-active-class="leave-active"
@before-enter="beforeEnter"
@enter="enter"
@after-enter="afterEnter"
@before-leave="beforeLeave"
@leave="leave"
@after-leave="afterLeave"
>
<slot />
</transition>
</template>
<script>
export default {
name: "TransitionCollapseHeight",
methods: {
beforeEnter(el) {
requestAnimationFrame(() => {
if (!el.style.height) {
el.style.height = '0px';
}
el.style.display = null;
});
},
enter(el) {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
el.style.height = el.scrollHeight + 'px';
});
});
},
afterEnter(el) {
el.style.height = null;
},
beforeLeave(el) {
requestAnimationFrame(() => {
if (!el.style.height) {
el.style.height = el.offsetHeight + 'px';
}
});
},
leave(el) {
requestAnimationFrame(() => {
requestAnimationFrame(() => {
el.style.height = '0px';
});
});
},
afterLeave(el) {
el.style.height = null;
}
}
}
</script>
<style scoped>
.enter-active,
.leave-active {
overflow: hidden;
transition: height 0.2s linear;
}
</style>