Clean up `ViewIntentFinder` (63bdbf51) · Commits · e / os / Mail

legacy/ui/legacy/src/main/java/com/fsck/k9/ui/messageview/ViewIntentFinder.kt

+24 −23

Original line number	Diff line number	Diff line
		@@ -6,6 +6,7 @@ import android.content.pm.PackageManager
		import android.net.Uri
		import androidx.annotation.WorkerThread
		import com.fsck.k9.helper.MimeTypeUtil
		import com.fsck.k9.helper.MimeTypeUtil.DEFAULT_ATTACHMENT_MIME_TYPE
		import com.fsck.k9.provider.AttachmentTempFileProvider

		/**
		@@ -16,57 +17,57 @@ internal class ViewIntentFinder(private val context: Context) {
		fun getBestViewIntent(contentUri: Uri, displayName: String?, mimeType: String): Intent {
		val inferredMimeType = MimeTypeUtil.getMimeTypeByExtension(displayName)

		var resolvedIntentInfo: IntentAndResolvedActivitiesCount
		var resolvedIntentInfo: QueryIntentResult
		if (MimeTypeUtil.isDefaultMimeType(mimeType)) {
		resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType)
		} else {
		resolvedIntentInfo = getViewIntentForMimeType(contentUri, mimeType)
		if (!resolvedIntentInfo.hasResolvedActivities() && inferredMimeType != mimeType) {
		if (resolvedIntentInfo.hasNoResolvedActivities() && inferredMimeType != mimeType) {
		resolvedIntentInfo = getViewIntentForMimeType(contentUri, inferredMimeType)
		}
		}

		if (!resolvedIntentInfo.hasResolvedActivities()) {
		resolvedIntentInfo = getViewIntentForMimeType(contentUri, MimeTypeUtil.DEFAULT_ATTACHMENT_MIME_TYPE)
		if (resolvedIntentInfo.hasNoResolvedActivities()) {
		resolvedIntentInfo = getViewIntentForMimeType(contentUri, DEFAULT_ATTACHMENT_MIME_TYPE)
		}

		return resolvedIntentInfo.intent
		}

		private fun getViewIntentForMimeType(contentUri: Uri, mimeType: String): IntentAndResolvedActivitiesCount {
		val contentUriIntent = createViewIntentForAttachmentProviderUri(contentUri, mimeType)
		val contentUriActivitiesCount = getResolvedIntentActivitiesCount(contentUriIntent)
		private fun getViewIntentForMimeType(contentUri: Uri, mimeType: String): QueryIntentResult {
		val intent = createViewIntentForAttachmentProviderUri(contentUri, mimeType)
		val activitiesCount = getResolvedIntentActivitiesCount(intent)

		return IntentAndResolvedActivitiesCount(contentUriIntent, contentUriActivitiesCount)
		return QueryIntentResult(intent, activitiesCount)
		}

		private fun createViewIntentForAttachmentProviderUri(contentUri: Uri, mimeType: String): Intent {
		val uri = AttachmentTempFileProvider.getMimeTypeUri(contentUri, mimeType)

		val intent = Intent(Intent.ACTION_VIEW)
		intent.setDataAndType(uri, mimeType)
		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
		addUiIntentFlags(intent)

		return intent
		return Intent(Intent.ACTION_VIEW).apply {
		setDataAndType(uri, mimeType)
		addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
		addUiIntentFlags()
		}
		}

		private fun addUiIntentFlags(intent: Intent) {
		intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET)
		private fun Intent.addUiIntentFlags() {
		addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_NEW_DOCUMENT)
		}

		private fun getResolvedIntentActivitiesCount(intent: Intent): Int {
		val packageManager = context.packageManager

		val resolveInfos =
		packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
		val resolveInfos = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)

		return resolveInfos.size
		}

		private class IntentAndResolvedActivitiesCount(val intent: Intent, private val activitiesCount: Int) {
		fun hasResolvedActivities(): Boolean {
		return activitiesCount > 0
		}

		private class QueryIntentResult(
		val intent: Intent,
		private val activitiesCount: Int,
		) {
		fun hasNoResolvedActivities(): Boolean {
		return activitiesCount == 0
		}
		}