X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FDownloadImageDialog.java;h=9c1afe67e91bb7f96f3cb69b56b66cbfd0c21c58;hp=7a0aeccd89b9a8a2fe07107c3eb0d322b6fce5a5;hb=4d51aa9acb8daaec1326f14e5025fde6d1f0dcd8;hpb=f82135d919d64d4909c37c79a18e14ceba802579 diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/DownloadImageDialog.java b/app/src/main/java/com/stoutner/privacybrowser/dialogs/DownloadImageDialog.java index 7a0aeccd..9c1afe67 100644 --- a/app/src/main/java/com/stoutner/privacybrowser/dialogs/DownloadImageDialog.java +++ b/app/src/main/java/com/stoutner/privacybrowser/dialogs/DownloadImageDialog.java @@ -1,5 +1,5 @@ /* - * Copyright © 2016-2017 Soren Stoutner . + * Copyright © 2016-2019 Soren Stoutner . * * This file is part of Privacy Browser . * @@ -24,140 +24,158 @@ import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; +import android.content.SharedPreferences; import android.net.Uri; import android.os.Bundle; -import android.support.annotation.NonNull; -// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <= 22. -import android.support.v7.app.AppCompatDialogFragment; +import android.preference.PreferenceManager; import android.view.KeyEvent; -import android.view.LayoutInflater; import android.view.View; import android.view.WindowManager; import android.widget.EditText; +import androidx.annotation.NonNull; +import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <=22. + import com.stoutner.privacybrowser.R; -// `android.support.v7.app.AlertDialog` uses more of the horizontal screen real estate versus `android.app.AlertDialog's` smaller width. -// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <=22. -public class DownloadImageDialog extends AppCompatDialogFragment { +public class DownloadImageDialog extends DialogFragment { + // `downloadImageListener` is used in `onAttach()` and `onCreateDialog()`. + private DownloadImageListener downloadImageListener; + + // The public interface is used to send information back to the parent activity. + public interface DownloadImageListener { + void onDownloadImage(DialogFragment dialogFragment, String downloadUrl); + } + + // Check to make sure tha the parent activity implements the listener. + @Override + public void onAttach(@NonNull Context context) { + // Run the default commands. + super.onAttach(context); - private String imageUrl; - private String imageFileName; + // Get a handle for `DownloadImageListener` from the launching context. + downloadImageListener = (DownloadImageListener) context; + } public static DownloadImageDialog imageUrl(String imageUrlString) { - // Create `argumentsBundle`. + // Create an arguments bundle. Bundle argumentsBundle = new Bundle(); + // Create a variable for the image name string. String imageNameString; + // Extract the image name string from the image URL. Uri imageUri = Uri.parse(imageUrlString); imageNameString = imageUri.getLastPathSegment(); - // Store the variables in the `Bundle`. + // Store the variables in the bundle. argumentsBundle.putString("URL", imageUrlString); argumentsBundle.putString("Image_Name", imageNameString); - // Add `argumentsBundle` to this instance of `DownloadFileDialog`. + // Add the arguments bundle to this instance of `DownloadFileDialog`. DownloadImageDialog thisDownloadFileDialog = new DownloadImageDialog(); thisDownloadFileDialog.setArguments(argumentsBundle); return thisDownloadFileDialog; } + // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`. + @SuppressLint("InflateParams") @Override - public void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); + @NonNull + public Dialog onCreateDialog(Bundle savedInstanceState) { + // Remove the warning below that `getArguments()` might be null. + assert getArguments() != null; - // Store the strings in the local class variables. - imageUrl = getArguments().getString("URL"); - imageFileName = getArguments().getString("Image_Name"); - } + // Get the strings from the bundle. + String imageUrl = getArguments().getString("URL"); + String imageFileName = getArguments().getString("Image_Name"); - // The public interface is used to send information back to the parent activity. - public interface DownloadImageListener { - void onDownloadImage(AppCompatDialogFragment dialogFragment, String downloadUrl); - } + // Remove the warning below that `.getActivity()` might be null. + assert getActivity() != null; - // `downloadImageListener` is used in `onAttach()` and `onCreateDialog()`. - private DownloadImageListener downloadImageListener; + // Get a handle for the shared preferences. + SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getContext()); - // Check to make sure tha the parent activity implements the listener. - @Override - public void onAttach(Context context) { - super.onAttach(context); - try { - downloadImageListener = (DownloadImageListener) context; - } catch (ClassCastException exception) { - throw new ClassCastException(context.toString() + " must implement DownloadImageListener."); - } - } + // Get the screenshot and theme preferences. + boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false); + boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false); - // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`. - @SuppressLint("InflateParams") - @Override - @NonNull - public Dialog onCreateDialog(Bundle savedInstanceState) { - // Get the activity's layout inflater. - LayoutInflater layoutInflater = getActivity().getLayoutInflater(); + // Use and alert dialog builder to create the alert dialog. + AlertDialog.Builder dialogBuilder; + + // Set the style according to the theme. + if (darkTheme) { + dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark); + } else { + dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight); + } - // Use `AlertDialog.Builder` to create the `AlertDialog`. `R.style.lightAlertDialog` formats the color of the button text. - AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog); + // Set the title. dialogBuilder.setTitle(R.string.save_image_as); - // The parent view is `null` because it will be assigned by `AlertDialog`. - dialogBuilder.setView(layoutInflater.inflate(R.layout.download_image_dialog, null)); - - // Set an `onClick()` listener on the negative button. - dialogBuilder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { - @Override - public void onClick(DialogInterface dialog, int which) { - // Do nothing if `Cancel` is clicked. - } + + // Set the icon according to the theme. + if (darkTheme) { + dialogBuilder.setIcon(R.drawable.images_enabled_dark); + } else { + dialogBuilder.setIcon(R.drawable.images_enabled_light); + } + + // Remove the incorrect lint warning below that `getActivity() might be null. + assert getActivity() != null; + + // Set the view. The parent view is `null` because it will be assigned by `AlertDialog`. + dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.download_image_dialog, null)); + + // Set an listener on the negative button. + dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> { + // Do nothing if `Cancel` is clicked. }); - // Set an `onClick()` listener on the positive button - dialogBuilder.setPositiveButton(R.string.download, new DialogInterface.OnClickListener() { - @Override - public void onClick(DialogInterface dialog, int which) { - // trigger `onDownloadFile()` and return the `DialogFragment` and the download URL to the parent activity. - downloadImageListener.onDownloadImage(DownloadImageDialog.this, imageUrl); - } + // Set an listener on the positive button + dialogBuilder.setPositiveButton(R.string.download, (DialogInterface dialog, int which) -> { + // trigger `onDownloadFile()` and return the `DialogFragment` and the download URL to the parent activity. + downloadImageListener.onDownloadImage(DownloadImageDialog.this, imageUrl); }); - // Create an `AlertDialog` from the `AlertDialog.Builder`. + // Create an alert dialog from the alert dialog builder. final AlertDialog alertDialog = dialogBuilder.create(); - // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`. + // Remove the warning below that `getWindow()` might be null. assert alertDialog.getWindow() != null; + // Disable screenshots if not allowed. + if (!allowScreenshots) { + alertDialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE); + } + // Show the keyboard when `alertDialog` is displayed on the screen. alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); - // We need to show `alertDialog` before we can modify the contents. + // The alert dialog must be shown before the contents can be modified. alertDialog.show(); // Set the text for `downloadImageNameTextView`. - EditText downloadImageNameTextView = (EditText) alertDialog.findViewById(R.id.download_image_name); + EditText downloadImageNameTextView = alertDialog.findViewById(R.id.download_image_name); downloadImageNameTextView.setText(imageFileName); // Allow the `enter` key on the keyboard to save the file from `downloadImageNameTextView`. - downloadImageNameTextView.setOnKeyListener(new View.OnKeyListener() { - @Override - public boolean onKey (View v, int keyCode, KeyEvent event) { - // If the event is an `ACTION_DOWN` on the `enter` key, initiate the download. - if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) { - // trigger `onDownloadImage()` and return the `DialogFragment` and the URL to the parent activity. - downloadImageListener.onDownloadImage(DownloadImageDialog.this, imageUrl); - // Manually dismiss `alertDialog`. - alertDialog.dismiss(); - // Consume the event. - return true; - } else { // If any other key was pressed, do not consume the event. - return false; - } + downloadImageNameTextView.setOnKeyListener((View v, int keyCode, KeyEvent event) -> { + // If the event is an `ACTION_DOWN` on the `enter` key, initiate the download. + if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) { + // trigger `onDownloadImage()` and return the `DialogFragment` and the URL to the parent activity. + downloadImageListener.onDownloadImage(DownloadImageDialog.this, imageUrl); + + // Manually dismiss the alert dialog. + alertDialog.dismiss(); + + // Consume the event. + return true; + } else { // If any other key was pressed, do not consume the event. + return false; } }); - // `onCreateDialog` requires the return of an `AlertDialog`. return alertDialog; }