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梁灏 2019-08-27 09:37:17 +08:00
parent 92c1162255
commit 67d534df27
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134
src/components/dropdown/dropdown.vue
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<template>
<div
:class="[prefixCls]"
v-clickoutside="handleClose"
@mouseenter="handleMouseenter"
@mouseleave="handleMouseleave">
<div :class="[prefixCls-rel]" v-el:reference @click="handleClick"><slot></slot></div>
<Drop v-show="visible" :placement="placement" :transition="transition" v-ref:drop><slot name="list"></slot></Drop>
</div>
</template>
<script>
import Drop from '../select/dropdown.vue';
import clickoutside from '../../directives/clickoutside';
import { oneOf } from '../../utils/assist';
const prefixCls = 'ivu-dropdown';
export default {
name: 'Dropdown',
directives: { clickoutside },
components: { Drop },
props: {
trigger: {
validator (value) {
return oneOf(value, ['click', 'hover', 'custom']);
},
default: 'hover'
},
placement: {
validator (value) {
return oneOf(value, ['top', 'top-start', 'top-end', 'bottom', 'bottom-start', 'bottom-end', 'left', 'left-start', 'left-end', 'right', 'right-start', 'right-end']);
},
default: 'bottom'
},
visible: {
type: Boolean,
default: false
}
},
computed: {
transition () {
return ['bottom-start', 'bottom', 'bottom-end'].indexOf(this.placement) > -1 ? 'slide-up' : 'fade';
}
},
data () {
return {
prefixCls: prefixCls
};
},
methods: {
handleClick () {
if (this.trigger === 'custom') return false;
if (this.trigger !== 'click') {
return false;
}
this.visible = !this.visible;
},
handleMouseenter () {
if (this.trigger === 'custom') return false;
if (this.trigger !== 'hover') {
return false;
}
clearTimeout(this.timeout);
this.timeout = setTimeout(() => {
this.visible = true;
}, 250);
},
handleMouseleave () {
if (this.trigger === 'custom') return false;
if (this.trigger !== 'hover') {
return false;
}
clearTimeout(this.timeout);
this.timeout = setTimeout(() => {
this.visible = false;
}, 150);
},
handleClose () {
if (this.trigger === 'custom') return false;
if (this.trigger !== 'click') {
return false;
}
this.visible = false;
},
hasParent () {
const $parent = this.$parent.$parent;
if ($parent && $parent.$options.name === 'Dropdown') {
return $parent;
} else {
return false;
}
}
},
watch: {
visible (val) {
if (val) {
this.$refs.drop.update();
} else {
this.$refs.drop.destroy();
}
this.$emit('on-visible-change', val);
}
},
events: {
'on-click' (key) {
const $parent = this.hasParent();
if ($parent ) $parent.$emit('on-click', key);
},
'on-hover-click' () {
const $parent = this.hasParent();
if ($parent) {
this.$nextTick(() => {
if (this.trigger === 'custom') return false;
this.visible = false;
});
$parent.$emit('on-hover-click');
} else {
this.$nextTick(() => {
if (this.trigger === 'custom') return false;
this.visible = false;
});
}
},
'on-haschild-click' () {
this.$nextTick(() => {
if (this.trigger === 'custom') return false;
this.visible = true;
});
const $parent = this.hasParent();
if ($parent) $parent.$emit('on-haschild-click');
}
}
};
</script>