110 lines
3.9 KiB
Kotlin
110 lines
3.9 KiB
Kotlin
package sushi.hardcore.droidfs.file_viewers
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import android.os.Bundle
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import android.view.View
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import sushi.hardcore.droidfs.BaseActivity
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import sushi.hardcore.droidfs.R
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import sushi.hardcore.droidfs.provider.RestrictedFileProvider
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import sushi.hardcore.droidfs.util.GocryptfsVolume
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import sushi.hardcore.droidfs.widgets.ColoredAlertDialogBuilder
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abstract class FileViewerActivity: BaseActivity() {
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lateinit var gocryptfsVolume: GocryptfsVolume
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lateinit var filePath: String
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private var isFinishingIntentionally = false
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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filePath = intent.getStringExtra("path")!!
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val sessionID = intent.getIntExtra("sessionID", -1)
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gocryptfsVolume = GocryptfsVolume(sessionID)
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hideSystemUi()
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viewFile()
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}
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open fun hideSystemUi(){
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window.decorView.systemUiVisibility =
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View.SYSTEM_UI_FLAG_FULLSCREEN/* or
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View.SYSTEM_UI_FLAG_LOW_PROFILE or
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View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
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View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY or
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View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or
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View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION*/
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}
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abstract fun viewFile()
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override fun onUserInteraction() {
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super.onUserInteraction()
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if (window.decorView.systemUiVisibility and View.SYSTEM_UI_FLAG_FULLSCREEN == 0){
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hideSystemUi()
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}
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}
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fun loadWholeFile(path: String): ByteArray? {
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val fileSize = gocryptfsVolume.getSize(path)
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if (fileSize >= 0){
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try {
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val fileBuff = ByteArray(fileSize.toInt())
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var success = false
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val handleID = gocryptfsVolume.openReadMode(path)
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if (handleID != -1) {
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var offset: Long = 0
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val ioBuffer = ByteArray(GocryptfsVolume.DefaultBS)
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var length: Int
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while (gocryptfsVolume.readFile(handleID, offset, ioBuffer).also { length = it } > 0){
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System.arraycopy(ioBuffer, 0, fileBuff, offset.toInt(), length)
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offset += length.toLong()
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}
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gocryptfsVolume.closeFile(handleID)
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success = offset == fileBuff.size.toLong()
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}
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if (success){
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return fileBuff
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} else {
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ColoredAlertDialogBuilder(this)
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.setTitle(R.string.error)
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.setMessage(R.string.read_file_failed)
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.setCancelable(false)
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.setPositiveButton(R.string.ok) { _, _ -> goBackToExplorer() }
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.show()
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}
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} catch (e: OutOfMemoryError){
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ColoredAlertDialogBuilder(this)
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.setTitle(R.string.error)
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.setMessage(R.string.outofmemoryerror_msg)
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.setCancelable(false)
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.setPositiveButton(R.string.ok) { _, _ -> goBackToExplorer() }
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.show()
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}
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} else {
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ColoredAlertDialogBuilder(this)
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.setTitle(R.string.error)
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.setMessage(R.string.get_size_failed)
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.setCancelable(false)
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.setPositiveButton(R.string.ok) { _, _ -> goBackToExplorer() }
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.show()
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}
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return null
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}
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protected fun goBackToExplorer(){
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isFinishingIntentionally = true
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finish()
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}
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override fun onDestroy() {
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super.onDestroy()
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if (!isFinishingIntentionally) {
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gocryptfsVolume.close()
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RestrictedFileProvider.wipeAll(this)
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}
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}
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override fun onPause() {
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super.onPause()
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finish()
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}
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override fun onBackPressed() {
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super.onBackPressed()
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isFinishingIntentionally = true
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}
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}
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