pull/36/head
parent
6953feef0d
commit
f1e9345c47
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package io.legado.app.ui.rss.source.manage |
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import androidx.recyclerview.widget.DiffUtil |
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import io.legado.app.data.entities.RssSource |
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class DiffCallBack( |
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private val oldItems: List<RssSource>, |
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private val newItems: List<RssSource> |
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) : DiffUtil.Callback() { |
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override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean { |
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val oldItem = oldItems[oldItemPosition] |
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val newItem = newItems[newItemPosition] |
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return oldItem.sourceUrl == newItem.sourceUrl |
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} |
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override fun getOldListSize(): Int { |
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return oldItems.size |
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} |
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override fun getNewListSize(): Int { |
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return newItems.size |
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} |
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override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean { |
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val oldItem = oldItems[oldItemPosition] |
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val newItem = newItems[newItemPosition] |
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return oldItem.sourceName == newItem.sourceName |
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&& oldItem.enabled == newItem.enabled |
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} |
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override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int): Any? { |
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val oldItem = oldItems[oldItemPosition] |
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val newItem = newItems[newItemPosition] |
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return when { |
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oldItem.sourceName == newItem.sourceName |
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&& oldItem.enabled != newItem.enabled -> 2 |
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else -> null |
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} |
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} |
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} |
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