WeekHolder.java

package io.github.memfis19.cadar.internal.ui.list.adapter.holder;

import android.os.Handler;
import android.support.v4.util.Pair;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.TextView;

import java.util.Calendar;

import io.github.memfis19.cadar.R;
import io.github.memfis19.cadar.internal.ui.list.adapter.decorator.WeekDecorator;
import io.github.memfis19.cadar.internal.ui.list.adapter.decorator.factory.WeekDecoratorFactory;

/**
 * Created by memfis on 9/6/16.
 */
public class WeekHolder extends ListHolder {

    private View itemView;
    private TextView title;

    private Handler backgroundHandler;
    private Handler uiHandler;
    private final String DATE_FORMAT = "dd MMM";

    private WeekDecorator weekDecorator;

    public WeekHolder(View itemView,
                      Handler backgroundHandler,
                      Handler uiHandler,
                      WeekDecoratorFactory weekDecoratorFactory) {
        super(itemView);

        this.itemView = itemView;
        this.backgroundHandler = backgroundHandler;
        this.uiHandler = uiHandler;

        if (weekDecoratorFactory != null) {
            weekDecorator = weekDecoratorFactory.createWeekDecorator(itemView);
        } else {
            title = (TextView) itemView.findViewById(R.id.week_title);
        }
    }

    public void bindView(final Pair<Calendar, Calendar> period) {
        if (weekDecorator != null) {
            weekDecorator.onBindWeekView(itemView, period);
        } else {
            backgroundHandler.post(new Runnable() {
                @Override
                public void run() {

                    StringBuilder stringBuilder = new StringBuilder();
                    stringBuilder.append(title.getContext().getString(R.string.calendar_week));
                    stringBuilder.append(" ");
                    stringBuilder.append(period.first.get(Calendar.WEEK_OF_YEAR));
                    stringBuilder.append(", ");
                    stringBuilder.append(DateFormat.format(DATE_FORMAT, period.first));
                    stringBuilder.append(" - ");
                    stringBuilder.append(DateFormat.format(DATE_FORMAT, period.second));

                    final Spannable date = new SpannableString(stringBuilder.toString());

                    uiHandler.post(new Runnable() {
                        @Override
                        public void run() {
                            title.setText(date);
                        }
                    });
                }
            });
        }
    }
}