Gadgetbridge/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/adapter/AbstractActivityListingAdapter.java

/*  Copyright (C) 2015-2020 Andreas Shimokawa, Carsten Pfeiffer, Daniele
    Gobbetti

    This file is part of Gadgetbridge.

    Gadgetbridge is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gadgetbridge is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
package nodomain.freeyourgadget.gadgetbridge.adapter;

import android.content.Context;
import android.content.res.Resources;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import androidx.annotation.DrawableRes;

import java.util.ArrayList;
import java.util.List;

import nodomain.freeyourgadget.gadgetbridge.R;

/**
 * Adapter for displaying generic ItemWithDetails instances.
 */
public abstract class AbstractActivityListingAdapter<T> extends ArrayAdapter<T> {

    private final Context context;
    private final List<T> items;
    private int backgroundColor = 0;
    private int alternateColor = 0;

    public AbstractActivityListingAdapter(Context context) {
        this(context, new ArrayList<T>());
    }

    public AbstractActivityListingAdapter(Context context, List<T> items) {
        super(context, 0, items);

        this.context = context;
        this.items = items;
        alternateColor = getAlternateColor(context);
    }

    public static int getAlternateColor(Context context) {
        TypedValue typedValue = new TypedValue();
        Resources.Theme theme = context.getTheme();
        theme.resolveAttribute(R.attr.alternate_row_background, typedValue, true);
        return typedValue.data;
    }

    @Override
    public View getView(int position, View view, ViewGroup parent) {
        T item = getItem(position);
        view = null; //this is ugly (probably we get no recycling), but it is required to keep the layout nice. We have only few items, so this should be OK.
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = inflater.inflate(R.layout.activity_list_item, parent, false);
        }
        TextView timeFrom = view.findViewById(R.id.line_layout_timeFrom);
        TextView timeTo = view.findViewById(R.id.line_layout_timeTo);
        TextView activityName = view.findViewById(R.id.line_layout_activityName);
        TextView stepLabel = view.findViewById(R.id.line_layout_step_label);
        TextView distanceLabel = view.findViewById(R.id.line_layout_distance_label);
        TextView hrLabel = view.findViewById(R.id.line_layout_hr_label);
        TextView intensityLabel = view.findViewById(R.id.line_layout_intensity_label);
        TextView durationLabel = view.findViewById(R.id.line_layout_duration_labe);


        LinearLayout hrLayout = view.findViewById(R.id.line_layout_hr);
        LinearLayout stepLayout = view.findViewById(R.id.line_layout_step);
        LinearLayout intensityLayout = view.findViewById(R.id.line_layout_intensity);
        RelativeLayout parentLayout = view.findViewById(R.id.list_item_parent_layout);

        ImageView activityIcon = view.findViewById(R.id.line_layout_activityIcon);

        timeFrom.setText(getTimeFrom(item));
        timeTo.setText(getTimeTo(item));
        activityName.setText(getActivityName(item));
        stepLabel.setText(getStepLabel(item));
        distanceLabel.setText(getDistanceLabel(item));
        hrLabel.setText(getHrLabel(item));
        intensityLabel.setText(getIntensityLabel(item));
        durationLabel.setText(getDurationLabel(item));

        if (!hasHR(item)) {
            hrLayout.setVisibility(View.GONE);
        } else {
            hrLayout.setVisibility(View.VISIBLE);
        }

        if (!hasIntensity(item)) {
            intensityLayout.setVisibility(View.GONE);
        } else {
            intensityLayout.setVisibility(View.VISIBLE);
        }

        activityIcon.setImageResource(getIcon(item));

        if (position % 2 == 0) {
            parentLayout.setBackgroundColor(alternateColor);
        }

        return view;
    }

    protected abstract String getTimeFrom(T item);

    protected abstract String getTimeTo(T item);

    protected abstract String getActivityName(T item);

    protected abstract String getStepLabel(T item);

    protected abstract String getDistanceLabel(T item);

    protected abstract String getHrLabel(T item);

    protected abstract String getIntensityLabel(T item);

    protected abstract String getDurationLabel(T item);

    protected abstract boolean hasHR(T item);

    protected abstract boolean hasIntensity(T item);

    @DrawableRes
    protected abstract int getIcon(T item);

    public List<T> getItems() {
        return items;
    }

    public void loadItems() {
    }

    public void setItems(List<T> items, boolean notify) {
        this.items.clear();
        this.items.addAll(items);
        if (notify) {
            notifyDataSetChanged();
        }
    }

}