-
Notifications
You must be signed in to change notification settings - Fork 5
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Improved search functionality by searching in all translations for st…
…ation names, ordering by most used stations
- Loading branch information
Showing
2 changed files
with
207 additions
and
10 deletions.
There are no files selected for viewing
201 changes: 201 additions & 0 deletions
201
Hyperrail/src/main/java/be/hyperrail/android/adapter/MultilangAutocompleteAdapter.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,201 @@ | ||
| package be.hyperrail.android.adapter; | ||
|
|
||
| import android.database.DataSetObserver; | ||
| import android.view.LayoutInflater; | ||
| import android.view.View; | ||
| import android.view.ViewGroup; | ||
| import android.widget.Filter; | ||
| import android.widget.Filterable; | ||
| import android.widget.ListAdapter; | ||
| import android.widget.TextView; | ||
|
|
||
| import androidx.collection.ArraySet; | ||
| import androidx.fragment.app.FragmentActivity; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.Comparator; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
||
| import be.hyperrail.opentransportdata.common.models.StopLocation; | ||
|
|
||
| public class MultilangAutocompleteAdapter implements Filterable, ListAdapter { | ||
|
|
||
| private final FragmentActivity activity; | ||
| private final int layoutResourceId; | ||
| private final StopLocation[] stations; | ||
|
|
||
| private List<StopLocation> visibleStops = new ArrayList<>(); | ||
| private Set<DataSetObserver> observers = new ArraySet<>(); | ||
|
|
||
| public MultilangAutocompleteAdapter(FragmentActivity activity, int layoutResourceId, StopLocation[] stations) { | ||
| this.activity = activity; | ||
| this.layoutResourceId = layoutResourceId; | ||
| this.stations = stations; | ||
| } | ||
|
|
||
| @Override | ||
| public Filter getFilter() { | ||
| return new Filter() { | ||
| class MultilangFilterResults extends FilterResults { | ||
| public MultilangFilterResults(List<StopLocation> results) { | ||
| this.values = results; | ||
| this.count = results.size(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| protected FilterResults performFiltering(CharSequence constraint) { | ||
| constraint = constraint.toString().toLowerCase(); | ||
| List<StopLocation> list = new ArrayList<>(); | ||
| for (StopLocation s : stations) { | ||
| if (stationNameContains(constraint, s)) { | ||
| list.add(s); | ||
| } | ||
| } | ||
| Collections.sort(list, new AutocompleteSortComparator(constraint)); | ||
| return new MultilangFilterResults(list); | ||
| } | ||
|
|
||
| private boolean stationNameContains(CharSequence constraint, StopLocation s) { | ||
| if (s.getName().toLowerCase().contains(constraint)) { | ||
| return true; // primary name is not always included in the translations | ||
| } | ||
| for (String name : s.getTranslations().values()) { | ||
| if (name.toLowerCase().contains(constraint)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| protected void publishResults(CharSequence constraint, FilterResults results) { | ||
| //noinspection unchecked | ||
| updateVisibleStops((List<StopLocation>) results.values); | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| private void updateVisibleStops(List<StopLocation> stops) { | ||
| this.visibleStops = stops; | ||
| for (DataSetObserver observer : observers) { | ||
| observer.onChanged(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public boolean areAllItemsEnabled() { | ||
| return true; // No separators or other similar elements in this adapter | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isEnabled(int position) { | ||
| return true; // No separators or other similar elements in this adapter | ||
| } | ||
|
|
||
| @Override | ||
| public void registerDataSetObserver(DataSetObserver observer) { | ||
| this.observers.add(observer); | ||
| } | ||
|
|
||
| @Override | ||
| public void unregisterDataSetObserver(DataSetObserver observer) { | ||
| this.observers.remove(observer); | ||
| } | ||
|
|
||
| @Override | ||
| public int getCount() { | ||
| return visibleStops.size(); | ||
| } | ||
|
|
||
| @Override | ||
| public StopLocation getItem(int position) { | ||
| return visibleStops.get(position); | ||
| } | ||
|
|
||
| @Override | ||
| public long getItemId(int position) { | ||
| return getItem(position).getSemanticId().hashCode(); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean hasStableIds() { | ||
| return true; | ||
| } | ||
|
|
||
| @Override | ||
| public View getView(int position, View convertView, ViewGroup parent) { | ||
| return createViewFromResource(activity.getLayoutInflater(), position, convertView, parent, layoutResourceId); | ||
| } | ||
|
|
||
| @Override | ||
| public int getItemViewType(int position) { | ||
| return 0; | ||
| } | ||
|
|
||
| @Override | ||
| public int getViewTypeCount() { | ||
| return 1; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isEmpty() { | ||
| return visibleStops.isEmpty(); | ||
| } | ||
|
|
||
| // From ArrayAdapter | ||
| private View createViewFromResource(LayoutInflater inflater, int position, View convertView, ViewGroup parent, int resource) { | ||
| final View view; | ||
| final TextView text; | ||
|
|
||
| if (convertView == null) { | ||
| view = inflater.inflate(resource, parent, false); | ||
| } else { | ||
| view = convertView; | ||
| } | ||
|
|
||
| // If no custom field is assigned, assume the whole resource is a TextView | ||
| text = (TextView) view; | ||
|
|
||
| final StopLocation item = getItem(position); | ||
| text.setText(item.getLocalizedName()); | ||
|
|
||
| return view; | ||
| } | ||
|
|
||
| private static class AutocompleteSortComparator implements Comparator<StopLocation> { | ||
| private final String lowerCaseConstraint; | ||
|
|
||
| public AutocompleteSortComparator(CharSequence lowerCaseConstraint) { | ||
| this.lowerCaseConstraint = lowerCaseConstraint.toString(); | ||
| } | ||
|
|
||
| @Override | ||
| public int compare(StopLocation o1, StopLocation o2) { | ||
| boolean o1nameAdvantage = nameStartsWith(o1, lowerCaseConstraint); | ||
| boolean o2nameAdvantage = nameStartsWith(o2, lowerCaseConstraint); | ||
| if (o1nameAdvantage && !o2nameAdvantage) { | ||
| return -1; | ||
| } | ||
| if (o2nameAdvantage && !o1nameAdvantage) { | ||
| return 1; | ||
| } | ||
| return Float.compare(o2.getAvgStopTimes(), o1.getAvgStopTimes()); | ||
| } | ||
|
|
||
| private boolean nameStartsWith(StopLocation location, String prefix) { | ||
| if (location.getName().toLowerCase().startsWith(prefix)) { | ||
| return true; // Name is not always included in the translations | ||
| } | ||
| for (String name : location.getTranslations().values()) { | ||
| if (name.toLowerCase().startsWith(prefix)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters