Refactoring MarkerEditActivity. Logic has been moved to a ViewModel.

2020-11-22 17:33:46 +01:00
parent e133743547
commit 483736637e
3 changed files with 208 additions and 139 deletions
@@ -0,0 +1,173 @@
+package de.dennisguse.opentracks.viewmodels;
+
+import android.app.Application;
+import android.net.Uri;
+import android.os.ParcelFileDescriptor;
+import android.util.Log;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.util.NoSuchElementException;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
+import de.dennisguse.opentracks.util.FileUtils;
+
+public class MarkerEditViewModel extends AndroidViewModel {
+
+    private static final String TAG = MarkerEditViewModel.class.getSimpleName();
+
+    private MutableLiveData<Marker> markerData;
+    private boolean isNewMarker;
+    private Uri photoOriginalUri;
+    private final TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
+
+    public MarkerEditViewModel(@NonNull Application application) {
+        super(application);
+    }
+
+    public LiveData<Marker> getMarkerData(@NonNull Track.Id trackId, @Nullable Marker.Id markerId) {
+        if (markerData == null) {
+            markerData = new MutableLiveData<>();
+            trackRecordingServiceConnection.startConnection(getApplication());
+            loadData(trackId, markerId);
+        }
+        return markerData;
+    }
+
+    @Override
+    protected void onCleared() {
+        super.onCleared();
+        trackRecordingServiceConnection.unbind(getApplication());
+    }
+
+    private void loadData(Track.Id trackId, Marker.Id markerId) {
+        Marker marker;
+        isNewMarker = markerId == null;
+        if (isNewMarker) {
+            int nextMarkerNumber = trackId == null ? -1 : new ContentProviderUtils(getApplication()).getNextMarkerNumber(trackId);
+            if (nextMarkerNumber == -1) {
+                nextMarkerNumber = 0;
+            }
+            marker = new Marker(trackId);
+            marker.setId(markerId);
+            marker.setName(getApplication().getString(R.string.marker_name_format, nextMarkerNumber));
+        } else {
+            marker = new ContentProviderUtils(getApplication()).getMarker(markerId);
+            if (marker.hasPhoto()) {
+                photoOriginalUri = marker.getPhotoURI();
+            }
+        }
+        markerData.postValue(marker);
+    }
+
+    private Marker getMarkerOrThrowException() {
+        Marker marker = markerData != null ? markerData.getValue() : null;
+        if (marker == null) {
+            Log.d(TAG, "Marker data shouldn't be null. Call getMarkerData before.");
+            throw new NoSuchElementException("Marker data shouldn't be null. Call getMarkerData before.");
+        }
+
+        return marker;
+    }
+
+    private void deletePhoto(Uri photoUri) {
+        File photoFile = FileUtils.getPhotoFileIfExists(getApplication(), markerData.getValue().getTrackId(), photoUri);
+        FileUtils.deleteDirectoryRecurse(photoFile);
+    }
+
+    public void onPhotoDelete(String name, String category, String description) {
+        Marker marker =  getMarkerOrThrowException();
+        if (marker.hasPhoto()) {
+            if (!marker.getPhotoURI().equals(photoOriginalUri)) {
+                deletePhoto(marker.getPhotoURI());
+            }
+            marker.setPhotoUrl(null);
+            marker.setName(name);
+            marker.setCategory(category);
+            marker.setDescription(description);
+            markerData.postValue(marker);
+        }
+    }
+
+    public void onNewCameraPhoto(@NonNull Uri photoUri, String name, String category, String description) {
+        Marker marker =  getMarkerOrThrowException();
+        marker.setPhotoUrl(photoUri.toString());
+        marker.setName(name);
+        marker.setCategory(category);
+        marker.setDescription(description);
+        markerData.postValue(marker);
+    }
+
+    public void onNewGalleryPhoto(@NonNull Uri srcUri, String name, String category, String description) {
+        Marker marker =  getMarkerOrThrowException();
+
+        try (ParcelFileDescriptor parcelFd = getApplication().getContentResolver().openFileDescriptor(srcUri, "r")) {
+            FileDescriptor srcFd = parcelFd.getFileDescriptor();
+            File dstFile = new File(FileUtils.getImageUrl(getApplication(), marker.getTrackId()));
+            FileUtils.copy(srcFd, dstFile);
+
+            Uri photoUri = FileUtils.getUriForFile(getApplication(), dstFile);
+            marker.setPhotoUrl(photoUri.toString());
+            marker.setName(name);
+            marker.setCategory(category);
+            marker.setDescription(description);
+            markerData.postValue(marker);
+        } catch(Exception e) {
+            Log.e(TAG, e.getMessage());
+            Toast.makeText(getApplication(), R.string.marker_add_canceled, Toast.LENGTH_LONG).show();
+        }
+    }
+
+    private void onAddDone(@NonNull Marker marker, String name, String category, String description) {
+        trackRecordingServiceConnection.addMarker(getApplication(), name, category, description, marker.hasPhoto() ? marker.getPhotoURI().toString() : null);
+    }
+
+    private void onSaveDone(@NonNull Marker marker, String name, String category, String description) {
+        marker.setName(name);
+        marker.setCategory(category);
+        marker.setDescription(description);
+        new ContentProviderUtils(getApplication()).updateMarker(getApplication(), marker);
+
+        if (photoOriginalUri != null && (!marker.hasPhoto() || !photoOriginalUri.equals(marker.getPhotoURI()))) {
+            deletePhoto(photoOriginalUri);
+        }
+    }
+
+    public void onDone(String name, String category, String description) {
+        Marker marker = getMarkerOrThrowException();
+        if (isNewMarker) {
+            onAddDone(marker, name, category, description);
+        } else {
+            onSaveDone(marker, name, category, description);
+        }
+    }
+
+    public void onCancel() {
+        Marker marker =  getMarkerOrThrowException();
+        if (isNewMarker) {
+            if (marker.hasPhoto()) {
+                deletePhoto(marker.getPhotoURI());
+            }
+            if (photoOriginalUri != null && !photoOriginalUri.equals(marker.getPhotoURI())) {
+                deletePhoto(photoOriginalUri);
+            }
+        } else if (photoOriginalUri != null) {
+            if (marker.hasPhoto() && !marker.getPhotoURI().equals(photoOriginalUri)) {
+                deletePhoto(marker.getPhotoURI());
+            }
+        } else if (marker.hasPhoto()) {
+            deletePhoto(marker.getPhotoURI());
+        }
+    }
+}