option to delete all recordings that are not starred

app/build.gradle

@@ -81,7 +81,7 @@ dependencies {
     implementation "com.google.android.material:material:1.1.0-beta01"
     implementation "com.google.code.gson:gson:2.8.6"
 
-    implementation "org.osmdroid:osmdroid-android:6.1.5"
+    implementation "org.osmdroid:osmdroid-android:6.1.6"
 }
 
 androidExtensions {

app/src/main/java/org/y20k/trackbook/Keys.kt

@@ -69,7 +69,8 @@ object Keys {
 
     // dialog types
     const val DIALOG_EMPTY_RECORDING: Int = 0
-    const val DIALOG_REMOVE_TRACK: Int = 1
+    const val DIALOG_DELETE_TRACK: Int = 1
+    const val DIALOG_DELETE_NON_STARRED: Int = 2
 
     // dialog results
     const val DIALOG_EMPTY_PAYLOAD_STRING: String = ""

app/src/main/java/org/y20k/trackbook/SettingsFragment.kt

@@ -18,11 +18,15 @@
 package org.y20k.trackbook
 
 
+import YesNoDialog
 import android.content.Context
 import android.os.Bundle
 import android.view.View
 import androidx.preference.*
+import kotlinx.coroutines.*
+import org.y20k.trackbook.core.Tracklist
 import org.y20k.trackbook.helpers.AppThemeHelper
+import org.y20k.trackbook.helpers.FileHelper
 import org.y20k.trackbook.helpers.LengthUnitHelper
 import org.y20k.trackbook.helpers.LogHelper
 
@@ -30,7 +34,7 @@ import org.y20k.trackbook.helpers.LogHelper
 /*
  * SettingsFragment class
  */
-class SettingsFragment : PreferenceFragmentCompat() {
+class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogListener {
 
     /* Define log tag */
     private val TAG: String = LogHelper.makeLogTag(SettingsFragment::class.java)
@@ -88,12 +92,16 @@ class SettingsFragment : PreferenceFragmentCompat() {
                 return@setOnPreferenceChangeListener false
             }
         }
-//        preferenceThemeSelection.setOnPreferenceClickListener {
-//            preferenceThemeSelection.summary = "${getString(R.string.pref_theme_selection_theme_summary)} ${AppThemeHelper.getCurrentTheme(activity as Context)}"
-//            return@setOnPreferenceClickListener true
-//        }
-
 
+        // set up "Delete Non-Starred" preference
+        val preferenceDeleteNonStarred: Preference = Preference(activity as Context)
+        preferenceDeleteNonStarred.title = getString(R.string.pref_delete_non_starred_title)
+        preferenceDeleteNonStarred.setIcon(R.drawable.ic_delete_24dp)
+        preferenceDeleteNonStarred.summary = getString(R.string.pref_delete_non_starred_summary)
+        preferenceDeleteNonStarred.setOnPreferenceClickListener{
+            YesNoDialog(this as YesNoDialog.YesNoDialogListener).show(context = activity as Context, type = Keys.DIALOG_DELETE_NON_STARRED, message = R.string.dialog_yes_no_message_delete_non_starred, yesButton = R.string.dialog_yes_no_positive_button_delete_non_starred)
+            return@setOnPreferenceClickListener true
+        }
 
         // set up "Accuracy Threshold" preference
         val preferenceAccuracyThreshold: SeekBarPreference = SeekBarPreference(activity as Context)
@@ -120,6 +128,10 @@ class SettingsFragment : PreferenceFragmentCompat() {
         preferenceCategoryGeneral.title = getString(R.string.pref_general_title)
         preferenceCategoryGeneral.contains(preferenceImperialMeasurementUnits)
         preferenceCategoryGeneral.contains(preferenceGpsOnly)
+        val preferenceCategoryMaintenance: PreferenceCategory = PreferenceCategory(activity as Context)
+        preferenceCategoryMaintenance.title = getString(R.string.pref_maintenance_title)
+        preferenceCategoryMaintenance.contains(preferenceDeleteNonStarred)
+
         val preferenceCategoryAdvanced: PreferenceCategory = PreferenceCategory(activity as Context)
         preferenceCategoryAdvanced.title = getString(R.string.pref_advanced_title)
         preferenceCategoryAdvanced.contains(preferenceAccuracyThreshold)
@@ -130,10 +142,45 @@ class SettingsFragment : PreferenceFragmentCompat() {
         screen.addPreference(preferenceGpsOnly)
         screen.addPreference(preferenceImperialMeasurementUnits)
         screen.addPreference(preferenceThemeSelection)
+        screen.addPreference(preferenceCategoryMaintenance)
+        screen.addPreference(preferenceDeleteNonStarred)
         screen.addPreference(preferenceCategoryAdvanced)
         screen.addPreference(preferenceAccuracyThreshold)
         screen.addPreference(preferenceResetAdvanced)
         preferenceScreen = screen
     }
 
+
+    /* Overrides onYesNoDialog from YesNoDialogListener */
+    override fun onYesNoDialog(type: Int, dialogResult: Boolean, payload: Int, payloadString: String) {
+        when (type) {
+            Keys.DIALOG_DELETE_NON_STARRED -> {
+                when (dialogResult) {
+                    // user tapped delete
+                    true -> {
+                        deleteNonStarred(activity as Context)
+                    }
+                }
+            }
+            else -> {
+                super.onYesNoDialog(type, dialogResult, payload, payloadString)
+            }
+        }
+    }
+
+
+    /* Removes track and track files for given position - used by TracklistFragment */
+    fun deleteNonStarred(context: Context) {
+        val backgroundJob = Job()
+        val uiScope = CoroutineScope(Dispatchers.Main + backgroundJob)
+        uiScope.launch {
+            var tracklist: Tracklist = FileHelper.readTracklist(context)
+            val deferred: Deferred<Tracklist> = async { FileHelper.deleteNonStarredSuspended(context, tracklist) }
+            // wait for result and store in tracklist
+            tracklist = deferred.await()
+            backgroundJob.cancel()
+        }
+    }
+
+
 }

app/src/main/java/org/y20k/trackbook/TrackFragment.kt

@@ -85,8 +85,8 @@ class TrackFragment : Fragment(), RenameTrackDialog.RenameTrackListener, YesNoDi
         }
         // set up delete button
         layout.deleteButton.setOnClickListener {
-            val dialogMessage: String = "${getString(R.string.dialog_yes_no_message_remove_recording)}\n\n- ${layout.trackNameView.text}"
+            val dialogMessage: String = "${getString(R.string.dialog_yes_no_message_delete_recording)}\n\n- ${layout.trackNameView.text}"
-            YesNoDialog(this@TrackFragment as YesNoDialog.YesNoDialogListener).show(context = activity as Context, type = Keys.DIALOG_REMOVE_TRACK, messageString = dialogMessage, yesButton = R.string.dialog_yes_no_positive_button_remove_recording)
+            YesNoDialog(this@TrackFragment as YesNoDialog.YesNoDialogListener).show(context = activity as Context, type = Keys.DIALOG_DELETE_TRACK, messageString = dialogMessage, yesButton = R.string.dialog_yes_no_positive_button_delete_recording)
         }
         // set up rename button
         layout.editButton.setOnClickListener {
@@ -147,7 +147,7 @@ class TrackFragment : Fragment(), RenameTrackDialog.RenameTrackListener, YesNoDi
     /* Overrides onYesNoDialog from YesNoDialogListener */
     override fun onYesNoDialog(type: Int, dialogResult: Boolean, payload: Int, payloadString: String) {
         when (type) {
-            Keys.DIALOG_REMOVE_TRACK -> {
+            Keys.DIALOG_DELETE_TRACK -> {
                 when (dialogResult) {
                     // user tapped remove track
                     true -> {

app/src/main/java/org/y20k/trackbook/TracklistFragment.kt

@@ -77,8 +77,8 @@ class TracklistFragment : Fragment(), TracklistAdapter.TracklistAdapterListener,
             override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
                 // ask user
                 val adapterPosition: Int = viewHolder.adapterPosition
-                val dialogMessage: String = "${getString(R.string.dialog_yes_no_message_remove_recording)}\n\n- ${tracklistAdapter.getTrackName(adapterPosition)}"
+                val dialogMessage: String = "${getString(R.string.dialog_yes_no_message_delete_recording)}\n\n- ${tracklistAdapter.getTrackName(adapterPosition)}"
-                YesNoDialog(this@TracklistFragment as YesNoDialog.YesNoDialogListener).show(context = activity as Context, type = Keys.DIALOG_REMOVE_TRACK, messageString = dialogMessage, yesButton = R.string.dialog_yes_no_positive_button_remove_recording, payload = adapterPosition)
+                YesNoDialog(this@TracklistFragment as YesNoDialog.YesNoDialogListener).show(context = activity as Context, type = Keys.DIALOG_DELETE_TRACK, messageString = dialogMessage, yesButton = R.string.dialog_yes_no_positive_button_delete_recording, payload = adapterPosition)
             }
         }
         val itemTouchHelper = ItemTouchHelper(swipeHandler)
@@ -105,7 +105,7 @@ class TracklistFragment : Fragment(), TracklistAdapter.TracklistAdapterListener,
     /* Overrides onYesNoDialog from YesNoDialogListener */
     override fun onYesNoDialog(type: Int, dialogResult: Boolean, payload: Int, payloadString: String) {
         when (type) {
-            Keys.DIALOG_REMOVE_TRACK -> {
+            Keys.DIALOG_DELETE_TRACK -> {
                 when (dialogResult) {
                     // user tapped remove track
                     true -> {

app/src/main/java/org/y20k/trackbook/helpers/FileHelper.kt

@@ -224,6 +224,20 @@ object FileHelper {
     }
 
 
+    /* Suspend function: Deletes tracks that are not starred using deleteTracks */
+    suspend fun deleteNonStarredSuspended(context: Context, tracklist: Tracklist): Tracklist {
+        return suspendCoroutine { cont ->
+            val tracklistElements = mutableListOf<TracklistElement>()
+            tracklist.tracklistElements.forEach { tracklistElement ->
+                if (!tracklistElement.starred) {
+                    tracklistElements.add(tracklistElement)
+                }
+            }
+            cont.resume(deleteTracks(context, tracklistElements, tracklist))
+        }
+    }
+
+
     /* Suspend function: Wrapper for readTracklist */
     suspend fun readTracklistSuspended(context: Context): Tracklist {
         return suspendCoroutine {cont ->
@@ -314,7 +328,20 @@ object FileHelper {
     }
 
 
-    /* Deletes track */
+    /* Deletes multiple tracks track */
+    private fun deleteTracks(context: Context, tracklistElements: MutableList<TracklistElement>, tracklist: Tracklist): Tracklist {
+        tracklistElements.forEach { tracklistElement ->
+            // delete track files
+            tracklistElement.trackUriString.toUri().toFile().delete()
+            tracklistElement.gpxUriString.toUri().toFile().delete()
+        }
+        tracklist.tracklistElements.removeAll{ tracklistElements.contains(it) }
+        saveTracklist(context, tracklist, GregorianCalendar.getInstance().time)
+        return tracklist
+    }
+
+
+    /* Deletes one track */
     private fun deleteTrack(context: Context, position: Int, tracklist: Tracklist): Tracklist {
         val tracklistElement: TracklistElement = tracklist.tracklistElements[position]
         // delete track files

app/src/main/res/values-fr/strings.xml

@@ -65,8 +65,8 @@
     <string name="dialog_rename_track_button">Renommer</string>
     <string name="dialog_rename_track_input_hint">Entrez un nouveau nom</string>
     <string name="dialog_yes_no_positive_button_default">Oui</string>
-    <string name="dialog_yes_no_positive_button_remove_recording">Supprimer</string>
+    <string name="dialog_yes_no_positive_button_delete_recording">Supprimer</string>
-    <string name="dialog_yes_no_message_remove_recording">Supprimer cet enregistrement \?</string>
+    <string name="dialog_yes_no_message_delete_recording">Supprimer cet enregistrement \?</string>
     <string name="pref_accuracy_threshold_summary">Annuler les corrections d\'emplacement avec une précision supérieure à :</string>
     <string name="pref_accuracy_threshold_title">Seuil de précision</string>
     <string name="pref_advanced_title">Avancé</string>

app/src/main/res/values-it/strings.xml

@@ -65,8 +65,8 @@
     <string name="dialog_rename_track_button">Rinomina</string>
     <string name="dialog_rename_track_input_hint">Inserisci un nuovo nome</string>
     <string name="dialog_yes_no_positive_button_default">Sì</string>
-    <string name="dialog_yes_no_positive_button_remove_recording">Rimuovi</string>
+    <string name="dialog_yes_no_positive_button_delete_recording">Rimuovi</string>
-    <string name="dialog_yes_no_message_remove_recording">Rimuovere questa registrazione\?</string>
+    <string name="dialog_yes_no_message_delete_recording">Rimuovere questa registrazione\?</string>
     <string name="pref_accuracy_threshold_summary">Elimina le correzioni di posizione con una precisione maggiore di:</string>
     <string name="pref_accuracy_threshold_title">Soglia della precisione</string>
     <string name="pref_advanced_title">Avanzate</string>

app/src/main/res/values-nb-rNO/strings.xml

@@ -65,8 +65,8 @@
     <string name="dialog_rename_track_button">Gi nytt navn</string>
     <string name="dialog_rename_track_input_hint">Skriv inn nytt navn</string>
     <string name="dialog_yes_no_positive_button_default">Ja</string>
-    <string name="dialog_yes_no_positive_button_remove_recording">Fjern</string>
+    <string name="dialog_yes_no_positive_button_delete_recording">Fjern</string>
-    <string name="dialog_yes_no_message_remove_recording">Fjern dette opptaket\?</string>
+    <string name="dialog_yes_no_message_delete_recording">Fjern dette opptaket\?</string>
     <string name="pref_accuracy_threshold_summary">Forkast posisjonsendringer med nøyaktighet større enn</string>
     <string name="pref_accuracy_threshold_title">Nøyaktighetsterskel</string>
     <string name="pref_advanced_title">Avansert</string>

app/src/main/res/values-nl/strings.xml

@@ -65,8 +65,8 @@
     <string name="dialog_rename_track_button">Naam wijzigen</string>
     <string name="dialog_rename_track_input_hint">Voer een naam in</string>
     <string name="dialog_yes_no_positive_button_default">Ja</string>
-    <string name="dialog_yes_no_positive_button_remove_recording">Verwijderen</string>
+    <string name="dialog_yes_no_positive_button_delete_recording">Verwijderen</string>
-    <string name="dialog_yes_no_message_remove_recording">Wil je deze opname verwijderen\?</string>
+    <string name="dialog_yes_no_message_delete_recording">Wil je deze opname verwijderen\?</string>
     <string name="pref_accuracy_threshold_summary">Locatie-aanpassingen verwerpen indien nauwkeurigheid hoger is dan:</string>
     <string name="pref_accuracy_threshold_title">Nauwkeurigheidsdrempelwaarde</string>
     <string name="pref_advanced_title">Geavanceerd</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -34,8 +34,8 @@
   <string name="dialog_rename_track_input_hint">输入一个新名称</string>
   <string name="dialog_share_gpx">分享GPX文件到</string>
   <string name="dialog_yes_no_positive_button_default">是</string>
-  <string name="dialog_yes_no_positive_button_remove_recording">删除</string>
+  <string name="dialog_yes_no_positive_button_delete_recording">删除</string>
-  <string name="dialog_yes_no_message_remove_recording">删除此记录？</string>
+  <string name="dialog_yes_no_message_delete_recording">删除此记录？</string>
   <!-- Toast Messages -->
   <string name="toast_message_elevation_info">提示：海拔数据的准确性取决于您的设备.测量整个路线的上坡和下坡海拔.</string>
   <string name="toast_message_install_file_helper">请先安装一个文件管理器或GPX轨迹查看器.</string>

app/src/main/res/values/strings.xml

@@ -34,8 +34,10 @@
     <string name="dialog_rename_track_input_hint">Enter a new name</string>
     <string name="dialog_share_gpx">Share GPX file with</string>
     <string name="dialog_yes_no_positive_button_default">Yes</string>
-    <string name="dialog_yes_no_positive_button_remove_recording">Remove</string>
+    <string name="dialog_yes_no_positive_button_delete_recording">Delete</string>
-    <string name="dialog_yes_no_message_remove_recording">Remove this recording?</string>
+    <string name="dialog_yes_no_positive_button_delete_non_starred">Delete</string>
+    <string name="dialog_yes_no_message_delete_non_starred">Delete all non-starred recordings? This action cannot be undone.</string>
+    <string name="dialog_yes_no_message_delete_recording">Delete this recording?</string>
     <!-- Toast Messages -->
     <string name="toast_message_elevation_info">Hint: The accuracy of elevation data depends on your device. The uphill and downhill elevation of the whole route is measured.</string>
     <string name="toast_message_install_file_helper">Please install a file manager or a GPX track viewer first.</string>
@@ -69,7 +71,10 @@
     <string name="pref_accuracy_threshold_summary">Discard location fixes with an accuracy larger than:</string>
     <string name="pref_accuracy_threshold_title">Accuracy Threshold</string>
     <string name="pref_advanced_title">Advanced</string>
+    <string name="pref_delete_non_starred_summary">Delete all recordings in \"Tracks\" that are not starred.</string>
+    <string name="pref_delete_non_starred_title">Delete Non-Starred Recordings</string>
     <string name="pref_general_title">General</string>
+    <string name="pref_maintenance_title">Maintenance</string>
     <string name="pref_gps_only_title">Restrict to GPS</string>
     <string name="pref_gps_only_summary_gps_and_network">Currently using GPS and Network for localization.</string>
     <string name="pref_gps_only_summary_gps_only">Currently using only GPS for localization.</string>