kopia lustrzana https://github.com/ryukoposting/Signal-Android
262 wiersze
10 KiB
Kotlin
262 wiersze
10 KiB
Kotlin
package org.thoughtcrime.securesms.contacts.paged
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import android.database.Cursor
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import org.signal.paging.PagedDataSource
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import org.thoughtcrime.securesms.dependencies.ApplicationDependencies
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import kotlin.math.min
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/**
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* Manages the querying of contact information based off a configuration.
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*/
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class ContactSearchPagedDataSource(
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private val contactConfiguration: ContactSearchConfiguration,
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private val contactSearchPagedDataSourceRepository: ContactSearchPagedDataSourceRepository = ContactSearchPagedDataSourceRepository(ApplicationDependencies.getApplication())
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) : PagedDataSource<ContactSearchKey, ContactSearchData> {
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override fun size(): Int {
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return contactConfiguration.sections.sumOf {
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getSectionSize(it, contactConfiguration.query)
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}
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}
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override fun load(start: Int, length: Int, cancellationSignal: PagedDataSource.CancellationSignal): MutableList<ContactSearchData> {
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val sizeMap: Map<ContactSearchConfiguration.Section, Int> = contactConfiguration.sections.associateWith { getSectionSize(it, contactConfiguration.query) }
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val startIndex: Index = findIndex(sizeMap, start)
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val endIndex: Index = findIndex(sizeMap, start + length)
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val indexOfStartSection = contactConfiguration.sections.indexOf(startIndex.category)
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val indexOfEndSection = contactConfiguration.sections.indexOf(endIndex.category)
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val results: List<List<ContactSearchData>> = contactConfiguration.sections.mapIndexed { index, section ->
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if (index in indexOfStartSection..indexOfEndSection) {
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getSectionData(
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section = section,
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query = contactConfiguration.query,
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startIndex = if (index == indexOfStartSection) startIndex.offset else 0,
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endIndex = if (index == indexOfEndSection) endIndex.offset else sizeMap[section] ?: error("Unknown section")
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)
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} else {
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emptyList()
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}
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}
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return results.flatten().toMutableList()
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}
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private fun findIndex(sizeMap: Map<ContactSearchConfiguration.Section, Int>, target: Int): Index {
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var offset = 0
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sizeMap.forEach { (key, size) ->
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if (offset + size > target) {
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return Index(key, target - offset)
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}
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offset += size
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}
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return Index(sizeMap.keys.last(), sizeMap.values.last())
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}
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data class Index(val category: ContactSearchConfiguration.Section, val offset: Int)
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override fun load(key: ContactSearchKey?): ContactSearchData? {
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throw UnsupportedOperationException()
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}
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override fun getKey(data: ContactSearchData): ContactSearchKey {
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return data.contactSearchKey
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}
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private fun getSectionSize(section: ContactSearchConfiguration.Section, query: String?): Int {
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val cursor: Cursor = when (section) {
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is ContactSearchConfiguration.Section.Individuals -> getNonGroupContactsCursor(section, query)
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is ContactSearchConfiguration.Section.Groups -> contactSearchPagedDataSourceRepository.getGroupContacts(section, query)
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is ContactSearchConfiguration.Section.Recents -> getRecentsCursor(section, query)
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is ContactSearchConfiguration.Section.Stories -> getStoriesCursor(query)
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}!!
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val extras: List<ContactSearchData> = when (section) {
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is ContactSearchConfiguration.Section.Stories -> getFilteredGroupStories(section, query)
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else -> emptyList()
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}
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val collection = ResultsCollection(
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section = section,
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cursor = cursor,
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extraData = extras,
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cursorMapper = { error("Unsupported") }
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)
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return collection.getSize()
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}
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private fun getFilteredGroupStories(section: ContactSearchConfiguration.Section.Stories, query: String?): List<ContactSearchData> {
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return (contactSearchPagedDataSourceRepository.getGroupStories() + section.groupStories)
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.filter { contactSearchPagedDataSourceRepository.recipientNameContainsQuery(it.recipient, query) }
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}
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private fun getSectionData(section: ContactSearchConfiguration.Section, query: String?, startIndex: Int, endIndex: Int): List<ContactSearchData> {
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return when (section) {
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is ContactSearchConfiguration.Section.Groups -> getGroupContactsData(section, query, startIndex, endIndex)
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is ContactSearchConfiguration.Section.Individuals -> getNonGroupContactsData(section, query, startIndex, endIndex)
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is ContactSearchConfiguration.Section.Recents -> getRecentsContactData(section, query, startIndex, endIndex)
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is ContactSearchConfiguration.Section.Stories -> getStoriesContactData(section, query, startIndex, endIndex)
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}
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}
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private fun getNonGroupContactsCursor(section: ContactSearchConfiguration.Section.Individuals, query: String?): Cursor? {
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return when (section.transportType) {
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ContactSearchConfiguration.TransportType.PUSH -> contactSearchPagedDataSourceRepository.querySignalContacts(query, section.includeSelf)
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ContactSearchConfiguration.TransportType.SMS -> contactSearchPagedDataSourceRepository.queryNonSignalContacts(query)
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ContactSearchConfiguration.TransportType.ALL -> contactSearchPagedDataSourceRepository.queryNonGroupContacts(query, section.includeSelf)
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}
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}
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private fun getStoriesCursor(query: String?): Cursor? {
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return contactSearchPagedDataSourceRepository.getStories(query)
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}
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private fun getRecentsCursor(section: ContactSearchConfiguration.Section.Recents, query: String?): Cursor? {
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if (!query.isNullOrEmpty()) {
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throw IllegalArgumentException("Searching Recents is not supported")
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}
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return contactSearchPagedDataSourceRepository.getRecents(section)
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}
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private fun readContactDataFromCursor(
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cursor: Cursor,
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section: ContactSearchConfiguration.Section,
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startIndex: Int,
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endIndex: Int,
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cursorRowToData: (Cursor) -> ContactSearchData,
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extraData: List<ContactSearchData> = emptyList()
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): List<ContactSearchData> {
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val results = mutableListOf<ContactSearchData>()
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val collection = ResultsCollection(section, cursor, extraData, cursorRowToData)
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results.addAll(collection.getSublist(startIndex, endIndex))
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return results
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}
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private fun getStoriesContactData(section: ContactSearchConfiguration.Section.Stories, query: String?, startIndex: Int, endIndex: Int): List<ContactSearchData> {
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return getStoriesCursor(query)?.use { cursor ->
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readContactDataFromCursor(
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cursor = cursor,
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section = section,
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startIndex = startIndex,
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endIndex = endIndex,
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cursorRowToData = {
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val recipient = contactSearchPagedDataSourceRepository.getRecipientFromDistributionListCursor(it)
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ContactSearchData.Story(recipient, contactSearchPagedDataSourceRepository.getDistributionListMembershipCount(recipient))
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},
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extraData = getFilteredGroupStories(section, query)
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)
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} ?: emptyList()
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}
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private fun getRecentsContactData(section: ContactSearchConfiguration.Section.Recents, query: String?, startIndex: Int, endIndex: Int): List<ContactSearchData> {
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return getRecentsCursor(section, query)?.use { cursor ->
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readContactDataFromCursor(
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cursor = cursor,
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section = section,
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startIndex = startIndex,
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endIndex = endIndex,
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cursorRowToData = {
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ContactSearchData.KnownRecipient(contactSearchPagedDataSourceRepository.getRecipientFromThreadCursor(cursor))
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}
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)
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} ?: emptyList()
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}
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private fun getNonGroupContactsData(section: ContactSearchConfiguration.Section.Individuals, query: String?, startIndex: Int, endIndex: Int): List<ContactSearchData> {
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return getNonGroupContactsCursor(section, query)?.use { cursor ->
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readContactDataFromCursor(
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cursor = cursor,
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section = section,
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startIndex = startIndex,
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endIndex = endIndex,
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cursorRowToData = {
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ContactSearchData.KnownRecipient(contactSearchPagedDataSourceRepository.getRecipientFromRecipientCursor(cursor))
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}
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)
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} ?: emptyList()
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}
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private fun getGroupContactsData(section: ContactSearchConfiguration.Section.Groups, query: String?, startIndex: Int, endIndex: Int): List<ContactSearchData> {
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return contactSearchPagedDataSourceRepository.getGroupContacts(section, query)?.use { cursor ->
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readContactDataFromCursor(
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cursor = cursor,
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section = section,
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startIndex = startIndex,
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endIndex = endIndex,
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cursorRowToData = {
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if (section.returnAsGroupStories) {
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ContactSearchData.Story(contactSearchPagedDataSourceRepository.getRecipientFromGroupCursor(cursor), 0)
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} else {
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ContactSearchData.KnownRecipient(contactSearchPagedDataSourceRepository.getRecipientFromGroupCursor(cursor))
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}
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}
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)
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} ?: emptyList()
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}
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/**
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* We assume that the collection is [cursor contents] + [extraData contents]
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*/
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private data class ResultsCollection(
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val section: ContactSearchConfiguration.Section,
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val cursor: Cursor,
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val extraData: List<ContactSearchData>,
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val cursorMapper: (Cursor) -> ContactSearchData
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) {
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private val contentSize = cursor.count + extraData.count()
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fun getSize(): Int {
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val contentsAndExpand = min(
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section.expandConfig?.let {
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if (it.isExpanded) Int.MAX_VALUE else (it.maxCountWhenNotExpanded + 1)
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} ?: Int.MAX_VALUE,
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contentSize
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)
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return contentsAndExpand + (if (contentsAndExpand > 0 && section.includeHeader) 1 else 0)
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}
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fun getSublist(start: Int, end: Int): List<ContactSearchData> {
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val results = mutableListOf<ContactSearchData>()
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for (i in start until end) {
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results.add(getItemAt(i))
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}
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return results
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}
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private fun getItemAt(index: Int): ContactSearchData {
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return when {
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index == 0 && section.includeHeader -> ContactSearchData.Header(section.sectionKey, section.headerAction)
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index == getSize() - 1 && shouldDisplayExpandRow() -> ContactSearchData.Expand(section.sectionKey)
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else -> {
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val correctedIndex = if (section.includeHeader) index - 1 else index
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if (correctedIndex < cursor.count) {
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cursor.moveToPosition(correctedIndex)
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cursorMapper.invoke(cursor)
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} else {
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val extraIndex = correctedIndex - cursor.count
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extraData[extraIndex]
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}
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}
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}
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}
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private fun shouldDisplayExpandRow(): Boolean {
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val expandConfig = section.expandConfig
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return when {
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expandConfig == null || expandConfig.isExpanded -> false
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else -> contentSize > expandConfig.maxCountWhenNotExpanded + 1
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}
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}
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}
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}
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