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30 lines
587 B
Vue
30 lines
587 B
Vue
<template>
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<transition name="dropdown"
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@enter="setHeight"
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@after-enter="unsetHeight"
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@before-leave="setHeight">
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<slot></slot>
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</transition>
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</template>
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<script>
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export default {
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name: 'DropdownTransition',
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methods: {
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setHeight (items) {
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// explicitly set height so that it can be transitioned
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items.style.height = items.scrollHeight + 'px'
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},
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unsetHeight (items) {
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items.style.height = ''
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}
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}
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}
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</script>
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<style lang="stylus">
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.dropdown-enter, .dropdown-leave-to
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height 0 !important
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</style>
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