/*
- * Copyright © 2019 Soren Stoutner <soren@stoutner.com>.
+ * Copyright © 2019-2021 Soren Stoutner <soren@stoutner.com>.
*
* This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
*
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Canvas;
+import android.net.Uri;
import android.os.AsyncTask;
import com.google.android.material.snackbar.Snackbar;
import com.stoutner.privacybrowser.R;
import com.stoutner.privacybrowser.views.NestedScrollWebView;
-import com.stoutner.privacybrowser.views.NoSwipeViewPager;
import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.FileOutputStream;
+import java.io.OutputStream;
import java.lang.ref.WeakReference;
-public class SaveWebpageImage extends AsyncTask<String, Void, String> {
- // Define the weak references.
- private WeakReference<Activity> activityWeakReference;
- private WeakReference<NestedScrollWebView> nestedScrollWebViewWeakReference;
+public class SaveWebpageImage extends AsyncTask<Void, Void, String> {
+ // Declare the weak references.
+ private final WeakReference<Activity> activityWeakReference;
+ private final WeakReference<NestedScrollWebView> nestedScrollWebViewWeakReference;
- // Define a success string constant.
+ // Declare the class constants.
private final String SUCCESS = "Success";
- // Define the saving image snackbar and the webpage bitmap.
+ // Declare the class variables.
private Snackbar savingImageSnackbar;
private Bitmap webpageBitmap;
+ private final String filePathString;
// The public constructor.
- public SaveWebpageImage(Activity activity, NestedScrollWebView nestedScrollWebView) {
+ public SaveWebpageImage(Activity activity, String filePathString, NestedScrollWebView nestedScrollWebView) {
// Populate the weak references.
activityWeakReference = new WeakReference<>(activity);
nestedScrollWebViewWeakReference = new WeakReference<>(nestedScrollWebView);
+
+ // Populate the class variables.
+ this.filePathString = filePathString;
}
// `onPreExecute()` operates on the UI thread.
@Override
protected void onPreExecute() {
- // Get a handle for the activity and the nested scroll WebView.
+ // Get handles for the activity and the nested scroll WebView.
Activity activity = activityWeakReference.get();
NestedScrollWebView nestedScrollWebView = nestedScrollWebViewWeakReference.get();
}
// Create a saving image snackbar.
- savingImageSnackbar = Snackbar.make(nestedScrollWebView, R.string.saving_image, Snackbar.LENGTH_INDEFINITE);
+ savingImageSnackbar = Snackbar.make(nestedScrollWebView, activity.getString(R.string.processing_image) + " " + nestedScrollWebView.getCurrentUrl(), Snackbar.LENGTH_INDEFINITE);
// Display the saving image snackbar.
savingImageSnackbar.show();
}
@Override
- protected String doInBackground(String... fileName) {
+ protected String doInBackground(Void... Void) {
// Get a handle for the activity.
Activity activity = activityWeakReference.get();
// Create a webpage PNG byte array output stream.
ByteArrayOutputStream webpageByteArrayOutputStream = new ByteArrayOutputStream();
- // Convert the bitmap to a PNG. `0` is for lossless compression (the only option for a PNG). This compression takes a long time.
+ // Convert the bitmap to a PNG. `0` is for lossless compression (the only option for a PNG). This compression takes a long time. Once the minimum API >= 30 this could be replaced with WEBP_LOSSLESS.
webpageBitmap.compress(Bitmap.CompressFormat.PNG, 0, webpageByteArrayOutputStream);
- // Get a file for the image.
- File imageFile = new File(fileName[0]);
-
- // Delete the current file if it exists.
- if (imageFile.exists()) {
- //noinspection ResultOfMethodCallIgnored
- imageFile.delete();
- }
-
// Create a file creation disposition string.
String fileCreationDisposition = SUCCESS;
try {
// Create an image file output stream.
- FileOutputStream imageFileOutputStream = new FileOutputStream(imageFile);
+ OutputStream imageFileOutputStream = activity.getContentResolver().openOutputStream(Uri.parse(filePathString));
// Write the webpage image to the image file.
webpageByteArrayOutputStream.writeTo(imageFileOutputStream);
// `onPostExecute()` operates on the UI thread.
@Override
protected void onPostExecute(String fileCreationDisposition) {
- // Get a handle for the activity.
+ // Get handles for the weak references.
Activity activity = activityWeakReference.get();
+ NestedScrollWebView nestedScrollWebView = nestedScrollWebViewWeakReference.get();
// Abort if the activity is gone.
if ((activity == null) || activity.isFinishing()) {
return;
}
- // Get a handle for the no swipe view pager.
- NoSwipeViewPager noSwipeViewPager = activity.findViewById(R.id.webviewpager);
-
// Dismiss the saving image snackbar.
savingImageSnackbar.dismiss();
// Display a file creation disposition snackbar.
if (fileCreationDisposition.equals(SUCCESS)) {
- Snackbar.make(noSwipeViewPager, R.string.image_saved, Snackbar.LENGTH_SHORT).show();
+ // Display the image saved snackbar.
+ Snackbar.make(nestedScrollWebView, activity.getString(R.string.image_saved) + " " + nestedScrollWebView.getCurrentUrl(), Snackbar.LENGTH_SHORT).show();
} else {
- Snackbar.make(noSwipeViewPager, activity.getString(R.string.error_saving_image) + " " + fileCreationDisposition, Snackbar.LENGTH_INDEFINITE).show();
+ // Display the file saving error.
+ Snackbar.make(nestedScrollWebView, activity.getString(R.string.error_saving_file) + " " + fileCreationDisposition, Snackbar.LENGTH_INDEFINITE).show();
}
}
}
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