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- <template>
- <view class="u-waterfall">
- <view id="u-left-column" class="u-column"><slot name="left" :leftList="leftList"></slot></view>
- <view id="u-right-column" class="u-column"><slot name="right" :rightList="rightList"></slot></view>
- </view>
- </template>
- <script>
- export default {
- name: "u-waterfall",
- props: {
- value: {
-
- type: Array,
- required: true,
- default: function() {
- return [];
- }
- },
-
-
- addTime: {
- type: [Number, String],
- default: 200
- },
-
-
- idKey: {
- type: String,
- default: 'id'
- }
- },
- data() {
- return {
- leftList: [],
- rightList: [],
- tempList: [],
- children: []
- }
- },
- watch: {
- copyFlowList(nVal, oVal) {
-
- let startIndex = Array.isArray(oVal) && oVal.length > 0 ? oVal.length : 0;
-
- this.tempList = this.tempList.concat(this.cloneData(nVal.slice(startIndex)));
- this.splitData();
- }
- },
- mounted() {
- this.tempList = this.cloneData(this.copyFlowList);
- this.splitData();
- },
- computed: {
-
- copyFlowList() {
- return this.cloneData(this.value);
- }
- },
- methods: {
- async splitData() {
- if (!this.tempList.length) return;
- let leftRect = await this.$uGetRect('#u-left-column');
- let rightRect = await this.$uGetRect('#u-right-column');
-
- let item = this.tempList[0];
-
-
- if(!item) return ;
- if (leftRect.height < rightRect.height) {
- this.leftList.push(item);
- } else if (leftRect.height > rightRect.height) {
- this.rightList.push(item);
- } else {
-
-
- if (this.leftList.length <= this.rightList.length) {
- this.leftList.push(item);
- } else {
- this.rightList.push(item);
- }
- }
-
- this.tempList.splice(0, 1);
-
- if (this.tempList.length) {
- setTimeout(() => {
- this.splitData();
- }, this.addTime)
- }
- },
-
- cloneData(data) {
- return JSON.parse(JSON.stringify(data));
- },
-
- clear() {
- this.leftList = [];
- this.rightList = [];
-
- this.$emit('input', []);
- this.tempList = [];
- },
-
- remove(id) {
-
- let index = -1;
- index = this.leftList.findIndex(val => val[this.idKey] == id);
- if(index != -1) {
-
- this.leftList.splice(index, 1);
- } else {
-
- index = this.rightList.findIndex(val => val[this.idKey] == id);
- if(index != -1) this.rightList.splice(index, 1);
- }
-
- index = this.value.findIndex(val => val[this.idKey] == id);
- if(index != -1) this.$emit('input', this.value.splice(index, 1));
- },
-
- modify(id, key, value) {
-
- let index = -1;
- index = this.leftList.findIndex(val => val[this.idKey] == id);
- if(index != -1) {
-
- this.leftList[index][key] = value;
- } else {
-
- index = this.rightList.findIndex(val => val[this.idKey] == id);
- if(index != -1) this.rightList[index][key] = value;
- }
-
- index = this.value.findIndex(val => val[this.idKey] == id);
- if(index != -1) {
-
- let data = this.cloneData(this.value);
-
- data[index][key] = value;
-
- this.$emit('input', data);
- }
- }
- }
- }
- </script>
- <style lang="scss" scoped>
- @import "../../libs/css/style.components.scss";
- .u-waterfall {
- @include vue-flex;
- flex-direction: row;
- align-items: flex-start;
- }
- .u-column {
- @include vue-flex;
- flex: 1;
- flex-direction: column;
- height: auto;
- }
- .u-image {
- width: 100%;
- }
- </style>
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