TextImageAudioView.java

package org.commcare.android.view;

import java.io.File;

import org.commcare.dalvik.R;
import org.commcare.suite.model.DisplayUnit;
import org.javarosa.core.model.condition.EvaluationContext;
import org.javarosa.core.reference.InvalidReferenceException;
import org.javarosa.core.reference.ReferenceManager;
import org.javarosa.core.services.locale.Localizer;
import org.odk.collect.android.views.media.AudioButton;

import android.content.Context;
import android.graphics.Bitmap;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

/**
 * This layout for the GenericMenuFormAdapter allows you to load an image, audio, and text
 * to menus.
 * 
 * @author wspride
 */

public class TextImageAudioView extends RelativeLayout {
    private static final String t = "AVTLayout";

    private TextView mTextView;
    private AudioButton mAudioButton;
    private ImageView mImageView;
    private TextView mMissingImage;
    private final int iconDimension;
    private final int fontSize = 20;
    
    private EvaluationContext ec;

    
    public TextImageAudioView(Context c) {
        this(c, null);
    }

    public TextImageAudioView(Context c, EvaluationContext ec) {
        super(c);
        mTextView = null;
        mAudioButton = null;
        mImageView = null;
        mMissingImage = null;
        this.ec = ec;
        
        this.iconDimension = (int) getResources().getDimension(R.dimen.menu_icon_size);

    }
    

    public void setDisplay(DisplayUnit display) {
        setAVT(Localizer.processArguments(display.getText().evaluate(ec), new String[] {""}).trim(), display.getAudioURI(), display.getImageURI());
    }
    
    //accepts a string to display and URI links to the audio and image, builds the proper TextImageAudio view
    public void setAVT(String displayText, String audioURI, String imageURI) {
        this.removeAllViews();
        
        LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        
        mTextView = (TextView)inflater.inflate(R.layout.entity_item_text, null);
        
        mTextView.setText(displayText);
        
        // Layout configurations for our elements in the relative layout
        RelativeLayout.LayoutParams textParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        RelativeLayout.LayoutParams audioParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        RelativeLayout.LayoutParams imageParams = new RelativeLayout.LayoutParams(iconDimension,iconDimension);
        
        String audioFilename = "";
        if(audioURI != null && !audioURI.equals("")) {
            try {
                audioFilename = ReferenceManager._().DeriveReference(audioURI).getLocalURI();
            } catch (InvalidReferenceException e) {
                Log.e(t, "Invalid reference exception");
                e.printStackTrace();
            }
        }

        File audioFile = new File(audioFilename);

        // First set up the audio button
        if (audioFilename != "" && audioFile.exists()) {
            // An audio file is specified
            mAudioButton = new AudioButton(getContext(), audioURI, true);
            mAudioButton.setId(3245345); // random ID to be used by the relative layout.
            // Set not focusable so that list onclick will work
            mAudioButton.setFocusable(false);
            mAudioButton.setFocusableInTouchMode(false);
            audioParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            audioParams.addRule(CENTER_VERTICAL);
            addView(mAudioButton, audioParams);
        }
        
        Bitmap b = ViewUtil.inflateDisplayImage(getContext(), imageURI);
        if(b != null) {
            mImageView = new ImageView(getContext());
            mImageView.setPadding(10, 10, 10, 10);
            mImageView.setAdjustViewBounds(true);
            mImageView.setImageBitmap(b);
            mImageView.setId(23422634);
            imageParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
            audioParams.addRule(CENTER_VERTICAL);
            addView(mImageView, imageParams);
        }
        
        textParams.addRule(RelativeLayout.CENTER_VERTICAL);
        textParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
        if(imageURI != null && !imageURI.equals("") && mImageView != null){
            textParams.addRule(RelativeLayout.RIGHT_OF,mImageView.getId());
        }
        else{
            textParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
        }
            
        if(mAudioButton != null) {
            textParams.addRule(RelativeLayout.LEFT_OF, mAudioButton.getId());
        }
        addView(mTextView, textParams);
    }


    /**
     * This adds a divider at the bottom of this layout. Used to separate fields in lists.
     * 
     * @param v
     */
    public void addDivider(ImageView v) {
        RelativeLayout.LayoutParams dividerParams =
            new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
        if (mImageView != null) {
            dividerParams.addRule(RelativeLayout.BELOW, mImageView.getId());
        } else if (mMissingImage != null) {
            dividerParams.addRule(RelativeLayout.BELOW, mMissingImage.getId());
        }
        else if (mAudioButton != null) {
            dividerParams.addRule(RelativeLayout.BELOW, mAudioButton.getId());
        } else if (mTextView != null) {
            // No picture
            dividerParams.addRule(RelativeLayout.BELOW, mTextView.getId());
        } else {
            Log.e(t, "Tried to add divider to uninitialized ATVWidget");
            return;
        }
        addView(v, dividerParams);
    }


    /*
     * (non-Javadoc)
     * @see android.view.View#onWindowVisibilityChanged(int)
     */
    @Override
    protected void onWindowVisibilityChanged(int visibility) {
        super.onWindowVisibilityChanged(visibility);
        if (visibility != View.VISIBLE) {
            if (mAudioButton != null) {
                mAudioButton.endPlaying();
            }
        }
    }

}