collapse-item.vue
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<template>
<div class="el-collapse-item" :class="{'is-active': isActive}">
<div
role="tab"
:aria-expanded="isActive"
:aria-controls="`el-collapse-content-${id}`"
:aria-describedby ="`el-collapse-content-${id}`"
>
<div
class="el-collapse-item__header"
@click="handleHeaderClick"
role="button"
:id="`el-collapse-head-${id}`"
tabindex="0"
@keyup.space.enter.stop="handleEnterClick"
:class="{
'focusing': focusing,
'is-active': isActive
}"
@focus="handleFocus"
@blur="focusing = false"
>
<slot name="title">{{title}}</slot>
<i
class="el-collapse-item__arrow el-icon-arrow-right"
:class="{'is-active': isActive}">
</i>
</div>
</div>
<el-collapse-transition>
<div
class="el-collapse-item__wrap"
v-show="isActive"
role="tabpanel"
:aria-hidden="!isActive"
:aria-labelledby="`el-collapse-head-${id}`"
:id="`el-collapse-content-${id}`"
>
<div class="el-collapse-item__content">
<slot></slot>
</div>
</div>
</el-collapse-transition>
</div>
</template>
<script>
import ElCollapseTransition from 'element-ui/src/transitions/collapse-transition';
import Emitter from 'element-ui/src/mixins/emitter';
import { generateId } from 'element-ui/src/utils/util';
export default {
name: 'ElCollapseItem',
componentName: 'ElCollapseItem',
mixins: [Emitter],
components: { ElCollapseTransition },
data() {
return {
contentWrapStyle: {
height: 'auto',
display: 'block'
},
contentHeight: 0,
focusing: false,
isClick: false
};
},
inject: ['collapse'],
props: {
title: String,
name: {
type: [String, Number],
default() {
return this._uid;
}
}
},
computed: {
isActive() {
return this.collapse.activeNames.indexOf(this.name) > -1;
},
id() {
return generateId();
}
},
methods: {
handleFocus() {
setTimeout(() => {
if (!this.isClick) {
this.focusing = true;
} else {
this.isClick = false;
}
}, 50);
},
handleHeaderClick() {
this.dispatch('ElCollapse', 'item-click', this);
this.focusing = false;
this.isClick = true;
},
handleEnterClick() {
this.dispatch('ElCollapse', 'item-click', this);
}
}
};
</script>