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optimize reused code fragments

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Spedon
2023-03-28 17:00:14 +08:00
parent 823de500d7
commit 9a6f141533
1 changed files with 12 additions and 12 deletions
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24
assets/ts/utils.ts
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@@ -97,45 +97,45 @@ export const getDeviceType = (): deviceType => {
return result
}
const autoHide = (e: HTMLImageElement): void => {
e.style.visibility = 'hidden'
e.dataset.status = 'trail'
}
export const pushIndex = (
index: number,
indexesArray: number[],
stackDepth: number,
imagesArray: NodeListOf<HTMLImageElement>,
imagesArrayLen: number,
invert: boolean = false,
autoHide: boolean = true
invertFlag: boolean = false,
autoHideFlag: boolean = true
): number => {
let indexesNum: number = indexesArray.length
// create variable overflow to store the tail index
let overflow: number
if (!invert) {
// push the tail index out and hide the image
if (!invertFlag) {
// if stack is full, push the tail index out and hide the image
if (indexesNum === stackDepth) {
// insert
indexesArray.push(index)
// pop out
overflow = indexesArray.shift() as number
// auto hide tail image
if (autoHide) {
imagesArray[overflow].style.visibility = 'hidden'
imagesArray[overflow].dataset.status = 'trail'
}
if (autoHideFlag) autoHide(imagesArray[overflow])
} else {
indexesArray.push(index)
indexesNum += 1
}
} else {
// if stack is full, push the tail index out and hide the image
if (indexesNum === stackDepth) {
// insert
indexesArray.unshift(calcImageIndex(index - stackDepth + 1, imagesArrayLen))
// pop out
overflow = indexesArray.pop() as number
// auto hide tail image
if (autoHide) {
imagesArray[overflow].style.visibility = 'hidden'
imagesArray[overflow].dataset.status = 'trail'
}
if (autoHideFlag) autoHide(imagesArray[overflow])
} else {
indexesArray.unshift(calcImageIndex(index - indexesNum + 1, imagesArrayLen))
indexesNum += 1