From 3487792adadb1150e31bb0eec53bee34ee827387 Mon Sep 17 00:00:00 2001
From: y20k <mail@y20k.org>
Date: Mon, 21 Aug 2017 11:48:17 +0200
Subject: [PATCH] added ability to delete a recording

---
 .../trackbook/MainActivityTrackFragment.java  | 37 ++++++++++++++++---
 .../main/res/layout/fragment_main_track.xml   |  2 +-
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/app/src/main/java/org/y20k/trackbook/MainActivityTrackFragment.java b/app/src/main/java/org/y20k/trackbook/MainActivityTrackFragment.java
index acb2f45..7447bf6 100644
--- a/app/src/main/java/org/y20k/trackbook/MainActivityTrackFragment.java
+++ b/app/src/main/java/org/y20k/trackbook/MainActivityTrackFragment.java
@@ -80,6 +80,7 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
     private DropdownAdapter mDropdownAdapter;
     private LinearLayout mTrackManagementLayout;
     private Spinner mDropdown;
+    private View mStatisticsSheet;
     private TextView mDistanceView;
     private TextView mStepsView;
     private TextView mWaypointsView;
@@ -188,7 +189,7 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
 
         // get views for statistics sheet
         View statisticsView = mRootView.findViewById(R.id.statistics_view);
-        View statisticsSheet = mRootView.findViewById(R.id.statistics_sheet);
+        mStatisticsSheet = mRootView.findViewById(R.id.statistics_sheet);
         mDistanceView = (TextView) mRootView.findViewById(R.id.statistics_data_distance);
         mStepsView = (TextView) mRootView.findViewById(R.id.statistics_data_steps);
         mWaypointsView = (TextView) mRootView.findViewById(R.id.statistics_data_waypoints);
@@ -211,7 +212,7 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
         }
 
         // set up and show statistics sheet
-        mStatisticsSheetBehavior = BottomSheetBehavior.from(statisticsSheet);
+        mStatisticsSheetBehavior = BottomSheetBehavior.from(mStatisticsSheet);
         mStatisticsSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
         mStatisticsSheetBehavior.setBottomSheetCallback(getStatisticsSheetCallback());
         statisticsView.setOnClickListener(new View.OnClickListener() {
@@ -304,7 +305,7 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
         switch(requestCode) {
             case RESULT_DELETE_DIALOG:
                 if (resultCode == Activity.RESULT_OK) {
-                    LogHelper.v(LOG_TAG, "Delete dialog result: DELETE");
+                    deleteCurrentTrack();
                 } else if (resultCode == Activity.RESULT_CANCELED){
                     LogHelper.v(LOG_TAG, "Delete dialog result: CANCEL");
                 }
@@ -371,18 +372,44 @@ public class MainActivityTrackFragment extends Fragment implements AdapterView.O
             // show onboarding layout
             mMapView.setVisibility(View.GONE);
             mOnboardingView.setVisibility(View.VISIBLE);
-            mTrackManagementLayout.setVisibility(View.INVISIBLE);
-            mStatisticsSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
+            mTrackManagementLayout.setVisibility(View.GONE);
+            mStatisticsSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+            mStatisticsSheet.setVisibility(View.GONE);
         } else {
             // show normal layout
             mOnboardingView.setVisibility(View.GONE);
             mMapView.setVisibility(View.VISIBLE);
             mTrackManagementLayout.setVisibility(View.VISIBLE);
             mStatisticsSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+            mStatisticsSheet.setVisibility(View.VISIBLE);
         }
     }
 
 
+    /* Deletes currently visible track */
+    private void deleteCurrentTrack() {
+
+        // delete track file and refresh dropdown adapter
+        if (mDropdownAdapter.getItem(mCurrentTrack).getTrackFile().delete()) {
+            mDropdownAdapter.refresh();
+            mDropdownAdapter.notifyDataSetChanged();
+            mDropdown.setAdapter(mDropdownAdapter);
+        } else {
+            LogHelper.e(LOG_TAG, "Unable to delete recording.");
+        }
+
+        if (mDropdownAdapter.isEmpty()) {
+            // show onboarding
+            switchOnboardingLayout();
+        } else {
+            // show next track
+            mDropdown.setSelection(0, true);
+            mCurrentTrack = 0;
+        }
+
+    }
+
+
     /* Creates BottomSheetCallback for the statistics sheet - needed in onCreateView */
     private BottomSheetBehavior.BottomSheetCallback getStatisticsSheetCallback() {
         return new BottomSheetBehavior.BottomSheetCallback() {
diff --git a/app/src/main/res/layout/fragment_main_track.xml b/app/src/main/res/layout/fragment_main_track.xml
index e6fb3f7..8c88173 100644
--- a/app/src/main/res/layout/fragment_main_track.xml
+++ b/app/src/main/res/layout/fragment_main_track.xml
@@ -52,7 +52,7 @@
                 android:paddingBottom="8dp"
                 android:contentDescription="@string/descr_export_button" />
             <ImageButton
-                android:visibility="gone"
+                android:visibility="visible"
                 android:id="@+id/delete_button"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"