miniprogram-recycle-view
Version:
miniprogram custom component
57 lines (55 loc) • 1.82 kB
JavaScript
/* eslint complexity: ["error", {"max": 50}] */
const recycleData = require('./recycle-data.js')
module.exports = function (e, cb) {
const detail = e.detail
// console.log('data change transfer use time', Date.now() - e.detail.timeStamp)
let newList = []
const item = recycleData[detail.id]
// 边界值判断, 避免造成异常, 假设先调用了createRecycleContext, 然后再延迟2s调用append插入数据的情况
if (!item || !item.list) return
const dataList = item.list
const pos = detail.data
const beginIndex = pos.beginIndex
const endIndex = pos.endIndex
item.pos = pos
// 加ignoreBeginIndex和ignoreEndIndex
if (typeof beginIndex === 'undefined' || beginIndex === -1 || typeof endIndex === 'undefined' || endIndex === -1) {
newList = []
} else {
let i = -1
for (i = beginIndex; i < dataList.length && i <= endIndex; i++) {
if (i >= pos.ignoreBeginIndex && i <= pos.ignoreEndIndex) continue
newList.push(dataList[i])
}
}
const obj = {
// batchSetRecycleData: !this.data.batchSetRecycleData
}
obj[item.key] = newList
const comp = this.selectComponent('#' + detail.id)
obj[comp.data.batchKey] = !this.data.batchSetRecycleData
comp._setInnerBeforeAndAfterHeight({
beforeHeight: pos.minTop,
afterHeight: pos.afterHeight
})
this.setData(obj, () => {
if (typeof cb === 'function') {
cb()
}
})
// Fix #1
// 去掉了batchSetDataKey，支持一个页面内显示2个recycle-view
// const groupSetData = () => {
// this.setData(obj)
// comp._recycleInnerBatchDataChanged(() => {
// if (typeof cb === 'function') {
// cb()
// }
// })
// }
// if (typeof this.groupSetData === 'function') {
// this.groupSetData(groupSetData)
// } else {
// groupSetData()
// }
}