--- /dev/null
+/*
+ * Copyright 2016-2017 Soren Stoutner <soren@stoutner.com>.
+ *
+ * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
+ *
+ * Privacy Browser is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Privacy Browser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.stoutner.privacybrowser.dialogs;
+
+import android.annotation.SuppressLint;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+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.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.EditText;
+import android.widget.TextView;
+
+import com.stoutner.privacybrowser.R;
+
+import java.util.Locale;
+
+public class DownloadFileDialog extends AppCompatDialogFragment {
+
+ private String downloadUrl;
+ private String downloadFileName;
+ private String fileSize;
+
+ public static DownloadFileDialog fromUrl(String urlString, String contentDisposition, long contentLength) {
+ // Create `argumentsBundle`.
+ Bundle argumentsBundle = new Bundle();
+
+ String fileNameString;
+
+ // Parse `filename` from `contentDisposition`.
+ if (contentDisposition.contains("filename=\"")) { // The file name is contained in a string surrounded by `""`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=\"") + 10, contentDisposition.indexOf("\"", contentDisposition.indexOf("filename=\"") + 10));
+ } else if (contentDisposition.contains("filename=") && ((contentDisposition.indexOf(";", contentDisposition.indexOf("filename=") + 9)) > 0 )) { // The file name is contained in a string beginning with `filename=` and ending with `;`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=") + 9, contentDisposition.indexOf(";", contentDisposition.indexOf("filename=") + 9));
+ } else if (contentDisposition.contains("filename=")) { // The file name is contained in a string beginning with `filename=` and proceeding to the end of `contentDisposition`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=") + 9, contentDisposition.length());
+ } else { // `contentDisposition` does not contain the filename, so use the last path segment of the URL.
+ Uri downloadUri = Uri.parse(urlString);
+ fileNameString = downloadUri.getLastPathSegment();
+ }
+
+ // Store the variables in the `Bundle`.
+ argumentsBundle.putString("URL", urlString);
+ argumentsBundle.putString("File_Name", fileNameString);
+ argumentsBundle.putLong("File_Size", contentLength);
+
+ // Add `argumentsBundle` to this instance of `DownloadFileDialog`.
+ DownloadFileDialog thisDownloadFileDialog = new DownloadFileDialog();
+ thisDownloadFileDialog.setArguments(argumentsBundle);
+ return thisDownloadFileDialog;
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ // Store the strings in the local class variables.
+ downloadUrl = getArguments().getString("URL");
+ downloadFileName = getArguments().getString("File_Name");
+
+ // Get the `File_Size`.
+ long fileSizeLong = getArguments().getLong("File_Size");
+
+ // Convert `fileSizeLong` to a String.
+ if (fileSizeLong == -1) { // We don't know the file size.
+ fileSize = getString(R.string.unknown_size);
+ } else { // Convert `fileSize` to MB and store it in `fileSizeString`. `%.3g` displays the three most significant digits.
+ fileSize = String.format(Locale.getDefault(), "%.3g", (float) fileSizeLong / 1048576) + " MB";
+ }
+ }
+
+ // The public interface is used to send information back to the parent activity.
+ public interface DownloadFileListener {
+ void onDownloadFile(AppCompatDialogFragment dialogFragment, String downloadUrl);
+ }
+
+ // `downloadFileListener` is used in `onAttach()` and `onCreateDialog()`.
+ private DownloadFileListener downloadFileListener;
+
+ @Override
+ public void onAttach(Context context) {
+ super.onAttach(context);
+
+ // Check to make sure the parent activity implements the listener.
+ try {
+ downloadFileListener = (DownloadFileListener) context;
+ } catch (ClassCastException exception) {
+ throw new ClassCastException(context.toString() + " must implement DownloadFileListener.");
+ }
+ }
+
+ @Override
+ @NonNull
+ // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+ @SuppressLint("InflateParams")
+ public Dialog onCreateDialog(Bundle savedInstanceState) {
+ // Get the activity's layout inflater.
+ LayoutInflater layoutInflater = getActivity().getLayoutInflater();
+
+ // 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_as);
+
+ // Set the view. The parent view is `null` because it will be assigned by `AlertDialog`.
+ dialogBuilder.setView(layoutInflater.inflate(R.layout.download_file_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. The `Dialog` will automatically close.
+ }
+ });
+
+ // 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.
+ downloadFileListener.onDownloadFile(DownloadFileDialog.this, downloadUrl);
+ }
+ });
+
+ // Create an `AlertDialog` from the `AlertDialog.Builder`.
+ final AlertDialog alertDialog = dialogBuilder.create();
+
+ // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
+ assert alertDialog.getWindow() != null;
+
+ // 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.
+ alertDialog.show();
+
+ // Set the text for `downloadFileSizeTextView`.
+ TextView downloadFileSizeTextView = (TextView) alertDialog.findViewById(R.id.download_file_size);
+ assert downloadFileSizeTextView != null; // Remove the warning on the following line that `downloadFileSizeTextView` might be `null`.
+ downloadFileSizeTextView.setText(fileSize);
+
+ // Set the text for `downloadFileNameTextView`.
+ EditText downloadFileNameTextView = (EditText) alertDialog.findViewById(R.id.download_file_name);
+ assert downloadFileNameTextView != null; // Remove the warning on the following line that `downloadFileNameTextView` might be `null`.
+ downloadFileNameTextView.setText(downloadFileName);
+
+ // Allow the `enter` key on the keyboard to save the file from `downloadFileNameTextView`.
+ downloadFileNameTextView.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 `onDownloadFile()` and return the `DialogFragment` and the URL to the parent activity.
+ downloadFileListener.onDownloadFile(DownloadFileDialog.this, downloadUrl);
+ // Manually dismiss `alertDialog`.
+ 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;
+ }
+}
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projects / PrivacyBrowserAndroid.git / blobdiff