InteractDiscreteSlider.java

package org.sagemath.droid.interacts;

import android.content.Context;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import org.sagemath.droid.models.gson.InteractReply.InteractControl;

import java.util.Arrays;
import java.util.LinkedList;

/**
 * View with {@linkplain android.widget.SeekBar} that displays discrete values
 * @author Rasmi Elsamar
 * @author Nikhil Peter Raj
 */
public class InteractDiscreteSlider
        extends InteractControlBase
        implements OnSeekBarChangeListener {
    private final static String TAG = "SageDroid:InteractDiscreteSlider";

    protected SeekBar seekBar;
    protected TextView nameValueText;
    private InteractControl control;

    public InteractDiscreteSlider(InteractView interactView, String variable, Context context) {
        super(interactView, variable, context);

        nameValueText = new TextView(context);
        nameValueText.setMaxLines(1);
        nameValueText.setLayoutParams(new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT, 0.0f));
        nameValueText.setPadding(
                nameValueText.getPaddingLeft() + 10,
                nameValueText.getPaddingTop() + 5,
                nameValueText.getPaddingRight() + 5,
                nameValueText.getPaddingBottom());
        addView(nameValueText);

        seekBar = new SeekBar(context);
        seekBar.setMax(1);
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.MATCH_PARENT,
                LinearLayout.LayoutParams.WRAP_CONTENT, 1.0f);
        seekBar.setLayoutParams(params);
        addView(seekBar);
        seekBar.setOnSeekBarChangeListener(this);
    }

    private LinkedList<String> values = new LinkedList<String>();

    public void setValues(InteractControl control) {
        Log.i(TAG, "Setting Values" + Arrays.toString(control.getValues().getValues()));
        this.control = control;
        this.values.clear();
        for (String i : control.getValues().getValues()) {
            values.add(i);
        }
        seekBar.setMax(values.size() - 1);
        updateValueText();
    }

    public Integer getValue() {
        return seekBar.getProgress();
    }

    public InteractControl getViewInteractControl() {
        return control;
    }

    public SeekBar getSeekBar() {
        return seekBar;
    }

    private void updateValueText() {
        nameValueText.setText(getVariableName() + "=" + values.get(getValue()));
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress,
                                  boolean fromUser) {
        updateValueText();
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        interactView.notifyChange(this);
    }
}