37 lines
784 B
Kotlin
37 lines
784 B
Kotlin
package org.mariotaku.twidere.model
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/**
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* Created by mariotaku on 11/22/16.
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*/
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class ItemCounts(counts: Int) {
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private val data: IntArray = IntArray(counts)
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fun getItemCountIndex(itemPosition: Int): Int {
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var sum = 0
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data.forEachIndexed { i, num ->
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sum += num
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if (itemPosition < sum) {
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return i
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}
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}
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return -1
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}
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fun getItemStartPosition(countIndex: Int): Int {
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return (0..countIndex - 1).sumBy { data[it] }
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}
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val itemCount: Int get() = data.sum()
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val size: Int get() = data.size
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operator fun set(countIndex: Int, value: Int) {
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data[countIndex] = value
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}
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operator fun get(countIndex: Int): Int {
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return data[countIndex]
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}
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} |