<template>
|
<span>
|
<ul v-if="data && data.length" :class="[prefixCls + '-menu']">
|
<Casitem
|
v-for="item in data"
|
:key="getKey()"
|
:prefix-cls="prefixCls"
|
:data="item"
|
:tmp-item="tmpItem"
|
@click.native.stop="handleClickItem(item)"
|
@mouseenter.native.stop="handleHoverItem(item)"></Casitem>
|
</ul><Caspanel v-if="sublist && sublist.length" :prefix-cls="prefixCls" :data="sublist" :disabled="disabled" :trigger="trigger" :change-on-select="changeOnSelect"></Caspanel>
|
</span>
|
</template>
|
<script>
|
import Casitem from './casitem.vue';
|
import Emitter from '../../mixins/emitter';
|
import { findComponentUpward, findComponentDownward } from '../../utils/assist';
|
|
let key = 1;
|
|
export default {
|
name: 'Caspanel',
|
mixins: [ Emitter ],
|
components: { Casitem },
|
props: {
|
data: {
|
type: Array,
|
default () {
|
return [];
|
}
|
},
|
disabled: Boolean,
|
changeOnSelect: Boolean,
|
trigger: String,
|
prefixCls: String
|
},
|
data () {
|
return {
|
tmpItem: {},
|
result: [],
|
sublist: []
|
};
|
},
|
watch: {
|
data () {
|
this.sublist = [];
|
}
|
},
|
methods: {
|
handleClickItem (item) {
|
if (this.trigger !== 'click' && item.children && item.children.length) return; // #1922
|
this.handleTriggerItem(item, false, true);
|
},
|
handleHoverItem (item) {
|
if (this.trigger !== 'hover' || !item.children || !item.children.length) return; // #1922
|
this.handleTriggerItem(item, false, true);
|
},
|
handleTriggerItem (item, fromInit = false, fromUser = false) {
|
if (item.disabled) return;
|
|
const cascader = findComponentUpward(this, 'Cascader');
|
if (item.loading !== undefined && !item.children.length) {
|
if (cascader && cascader.loadData) {
|
cascader.loadData(item, () => {
|
// todo
|
if (fromUser) {
|
cascader.isLoadedChildren = true;
|
}
|
if (item.children.length) {
|
this.handleTriggerItem(item);
|
}
|
});
|
return;
|
}
|
}
|
|
// return value back recursion // 向上递归，设置临时选中值（并非真实选中）
|
const backItem = this.getBaseItem(item);
|
// #5021 for this.changeOnSelect，加 if 是因为 #4472
|
if (
|
this.changeOnSelect ||
|
(backItem.label !== this.tmpItem.label || backItem.value !== this.tmpItem.value) ||
|
(backItem.label === this.tmpItem.label && backItem.value === this.tmpItem.value)
|
) {
|
this.tmpItem = backItem;
|
this.emitUpdate([backItem]);
|
}
|
|
if (item.children && item.children.length){
|
this.sublist = item.children;
|
this.dispatch('Cascader', 'on-result-change', {
|
lastValue: false,
|
changeOnSelect: this.changeOnSelect,
|
fromInit: fromInit
|
});
|
|
// #1553
|
if (this.changeOnSelect) {
|
const Caspanel = findComponentDownward(this, 'Caspanel');
|
if (Caspanel) {
|
Caspanel.$emit('on-clear', true);
|
}
|
}
|
} else {
|
this.sublist = [];
|
this.dispatch('Cascader', 'on-result-change', {
|
lastValue: true,
|
changeOnSelect: this.changeOnSelect,
|
fromInit: fromInit
|
});
|
}
|
|
if (cascader) {
|
cascader.$refs.drop.update();
|
}
|
},
|
updateResult (item) {
|
this.result = [this.tmpItem].concat(item);
|
this.emitUpdate(this.result);
|
},
|
getBaseItem (item) {
|
let backItem = Object.assign({}, item);
|
if (backItem.children) {
|
delete backItem.children;
|
}
|
|
return backItem;
|
},
|
emitUpdate (result) {
|
if (this.$parent.$options.name === 'Caspanel') {
|
this.$parent.updateResult(result);
|
} else {
|
this.$parent.$parent.updateResult(result);
|
}
|
},
|
getKey () {
|
return key++;
|
}
|
},
|
mounted () {
|
this.$on('on-find-selected', (params) => {
|
const val = params.value;
|
let value = [...val];
|
for (let i = 0; i < value.length; i++) {
|
for (let j = 0; j < this.data.length; j++) {
|
if (value[i] === this.data[j].value) {
|
this.handleTriggerItem(this.data[j], true);
|
value.splice(0, 1);
|
this.$nextTick(() => {
|
this.broadcast('Caspanel', 'on-find-selected', {
|
value: value
|
});
|
});
|
return false;
|
}
|
}
|
}
|
});
|
// deep for #1553
|
this.$on('on-clear', (deep = false) => {
|
this.sublist = [];
|
this.tmpItem = {};
|
if (deep) {
|
const Caspanel = findComponentDownward(this, 'Caspanel');
|
if (Caspanel) {
|
Caspanel.$emit('on-clear', true);
|
}
|
}
|
});
|
}
|
};
|
</script>
|
