session-android/app/src/main/java/org/thoughtcrime/securesms/conversation/v2/search/SearchViewModel.kt

119 lines
3.6 KiB
Kotlin

package org.thoughtcrime.securesms.conversation.v2.search
import android.content.Context
import androidx.lifecycle.LiveData
import androidx.lifecycle.ViewModel
import dagger.hilt.android.lifecycle.HiltViewModel
import dagger.hilt.android.qualifiers.ApplicationContext
import org.session.libsession.utilities.Debouncer
import org.session.libsession.utilities.Util.runOnMain
import org.session.libsession.utilities.concurrent.SignalExecutors
import org.thoughtcrime.securesms.contacts.ContactAccessor
import org.thoughtcrime.securesms.database.CursorList
import org.thoughtcrime.securesms.database.SearchDatabase
import org.thoughtcrime.securesms.database.ThreadDatabase
import org.thoughtcrime.securesms.search.SearchRepository
import org.thoughtcrime.securesms.search.model.MessageResult
import org.thoughtcrime.securesms.util.CloseableLiveData
import java.io.Closeable
import javax.inject.Inject
@HiltViewModel
class SearchViewModel @Inject constructor(
@ApplicationContext context: Context,
searchDb: SearchDatabase,
threadDb: ThreadDatabase
) : ViewModel() {
private val searchRepository: SearchRepository
private val result: CloseableLiveData<SearchResult>
private val debouncer: Debouncer
private var firstSearch = false
private var searchOpen = false
private var activeQuery: String? = null
private var activeThreadId: Long = 0
val searchResults: LiveData<SearchResult>
get() = result
fun onQueryUpdated(query: String, threadId: Long) {
if (query == activeQuery) {
return
}
updateQuery(query, threadId)
}
fun onMissingResult() {
if (activeQuery != null) {
updateQuery(activeQuery!!, activeThreadId)
}
}
fun onMoveUp() {
debouncer.clear()
val messages = result.value!!.getResults() as CursorList<MessageResult?>
val position = Math.min(result.value!!.position + 1, messages.size - 1)
result.setValue(SearchResult(messages, position), false)
}
fun onMoveDown() {
debouncer.clear()
val messages = result.value!!.getResults() as CursorList<MessageResult?>
val position = Math.max(result.value!!.position - 1, 0)
result.setValue(SearchResult(messages, position), false)
}
fun onSearchOpened() {
searchOpen = true
firstSearch = true
}
fun onSearchClosed() {
searchOpen = false
activeQuery = null
debouncer.clear()
result.close()
}
override fun onCleared() {
super.onCleared()
result.close()
}
private fun updateQuery(query: String, threadId: Long) {
activeQuery = query
activeThreadId = threadId
debouncer.publish {
firstSearch = false
searchRepository.query(query, threadId) { messages: CursorList<MessageResult?> ->
runOnMain {
if (searchOpen && query == activeQuery) {
result.setValue(SearchResult(messages, 0))
} else {
messages.close()
}
}
}
}
}
class SearchResult(private val results: CursorList<MessageResult?>, val position: Int) : Closeable {
fun getResults(): List<MessageResult?> {
return results
}
override fun close() {
results.close()
}
}
init {
result = CloseableLiveData()
debouncer = Debouncer(500)
searchRepository = SearchRepository(context,
searchDb,
threadDb,
ContactAccessor.getInstance(),
SignalExecutors.SERIAL)
}
}