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FakeList.ts
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FakeList.ts
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import { mockDomOffset } from '@better-scroll/core/src/__tests__/__utils__/layout'
import { TOMBSTONE_HEIGHT } from './constans'
export default class FakeList {
private list: any[]
constructor(size: number) {
this.list = Array.from({ length: size }).map(i => {
return {}
})
}
fill(val: any, start: number = 0, end?: number): this {
if (!end) {
end = this.list.length
}
for (let i = start; i < end; i++) {
Object.assign(this.list[i], val)
}
return this
}
fillPos(end?: number): this {
if (!end) {
end = this.list.length
}
let startPos = 0
for (let i = 0; i < end; i++) {
Object.assign(this.list[i], { pos: startPos })
const height = this.list[i].height
startPos += height
}
return this
}
fillDom(start: number, end?: number, height = TOMBSTONE_HEIGHT): this {
if (!end) {
end = this.list.length
}
for (let i = start; i < end; i++) {
const dom = document.createElement('div')
mockDomOffset(dom, { height })
Object.assign(this.list[i], { dom, height, pos: -1 })
}
return this
}
syncDomTo(content: HTMLElement): this {
for (let i = 0; i < this.list.length; i++) {
if (this.list[i].dom) {
content.appendChild(this.list[i].dom)
}
}
return this
}
getList(): any[] {
return this.list
}
}