ImagingComponent.java

/*
 * Copyright (c) 2014. The Trustees of Indiana University.
 *
 * This version of the code is licensed under the MPL 2.0 Open Source license with additional
 * healthcare disclaimer. If the user is an entity intending to commercialize any application
 * that uses this code in a for-profit venture, please contact the copyright holder.
 */

package com.muzima.view.forms;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Environment;
import android.webkit.JavascriptInterface;
import com.muzima.utils.EnDeCrypt;
import com.muzima.utils.StringUtils;
import com.muzima.utils.imaging.ImageResult;
import com.muzima.utils.imaging.ImagingIntent;

import java.io.File;

import static com.muzima.utils.imaging.ImagingIntent.KEY_IMAGE_CAPTION;
import static com.muzima.utils.imaging.ImagingIntent.KEY_IMAGE_PATH;
import static com.muzima.utils.imaging.ImagingIntent.KEY_SECTION_NAME;

public class ImagingComponent {
    private final static String TAG = "ImagingComponent";

    public static final int REQUEST_CODE = 0x0000c0de;
    public static final String FORM_UUID = "formUuid";
    private final Activity activity;

    private String imagePathField;
    private String imageCaptionField;


    public ImagingComponent(Activity activity) {
        this.activity = activity;
    }

    @JavascriptInterface
    public void startImageIntent(String sectionName, String imagePathField, String imagePath,
                                 String imageCaptionField, String imageCaption, String formUuid) {
        this.imagePathField = imagePathField;
        this.imageCaptionField = imageCaptionField;
        Intent imagingIntent = new Intent(activity.getApplication(), ImagingIntent.class);
        imagingIntent.putExtra(FORM_UUID, formUuid);
        imagingIntent.putExtra(KEY_IMAGE_PATH, imagePath);
        imagingIntent.putExtra(KEY_IMAGE_CAPTION, imageCaption);
        imagingIntent.putExtra(KEY_SECTION_NAME, sectionName);

        // at this point the image is encrypted so we decrypt it
        if (!StringUtils.isEmpty(imagePath))
            EnDeCrypt.decrypt(new File(imagePath), "this-is-supposed-to-be-a-secure-key");

        activity.startActivityForResult(imagingIntent, REQUEST_CODE);
    }

    @JavascriptInterface
    public void openImage(String imageUri){
        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            Intent startImage = new Intent(Intent.ACTION_VIEW);
            Uri uri = Uri.parse("file://" + Environment.getExternalStorageDirectory().getPath() + imageUri);
            startImage.setDataAndType(uri, "image/*");
            activity.startActivity(startImage);
        }
    }
    public String getImagePathField() {
        return imagePathField;
    }

    public String getImageCaptionField() {
        return imageCaptionField;
    }

    public static ImageResult parseActivityResult(int requestCode, int resultCode, Intent intent) {
        if (requestCode == REQUEST_CODE) {
            if (resultCode == Activity.RESULT_OK) {
                String sectionName = intent.getStringExtra(KEY_SECTION_NAME);
                String imageUri = intent.getStringExtra(KEY_IMAGE_PATH);
                String imageCaption = intent.getStringExtra(KEY_IMAGE_CAPTION);

                // now that we have an image we encrypt it and keep the path
                if (!StringUtils.isEmpty(imageUri))
                    EnDeCrypt.encrypt(new File(imageUri), "this-is-supposed-to-be-a-secure-key");

                return new ImageResult(sectionName, imageUri, imageCaption);
            }
        }
        return null;
    }
}