--- /dev/null
+/**
+ * Copyright 2016 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;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.content.DialogInterface;
+import android.os.Bundle;
+// `android.support.v7.app.AlertDialog` uses more of the horizontal screen real estate versus `android.app.AlertDialog's` smaller width.
+import android.support.v7.app.AlertDialog;
+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 java.util.Locale;
+
+public class DownloadFile extends DialogFragment {
+
+ private String downloadUrl;
+ private String downloadFileName;
+ private String fileSize;
+
+ public static DownloadFile fromUrl(String urlString, String contentDisposition, long contentLength) {
+ // Create `argumentsBundle`.
+ Bundle argumentsBundle = new Bundle();
+
+ // If `contentDisposition` is empty, use Android's standard string of `downloadfile.bin`.
+ String fileNameString;
+ if (contentDisposition.isEmpty()) {
+ fileNameString = "downloadfile.bin";
+ } else {
+ // Extract `fileNameString` from `contentDisposition` using the substring beginning after `filename="` and ending one character before the end of `contentDisposition`.
+ fileNameString = contentDisposition.substring(contentDisposition.indexOf("filename=\"") + 10, contentDisposition.length() - 1);
+ }
+
+ // Convert `contentLength` to MB and store it in `fileSizeString`. `%.3g` displays the three most significant digits.
+ String fileSizeString = String.format(Locale.getDefault(), "%.3g", (float) contentLength / 1048576) + " MB";
+
+ // Store the variables in the `Bundle`.
+ argumentsBundle.putString("URL", urlString);
+ argumentsBundle.putString("File_Name", fileNameString);
+ argumentsBundle.putString("File_Size", fileSizeString);
+
+ // Add `argumentsBundle` to this instance of `DownloadFile`.
+ DownloadFile thisDownloadFileDialog = new DownloadFile();
+ 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");
+ fileSize = getArguments().getString("File_Size");
+ }
+
+ // The public interface is used to send information back to the parent activity.
+ public interface DownloadFileListener {
+ void onDownloadFile(DialogFragment dialogFragment, String downloadUrl);
+ }
+
+ // `downloadFileListener` is used in `onAttach()` and `onCreateDialog()`.
+ private DownloadFileListener downloadFileListener;
+
+ // Check to make sure tha the parent activity implements the listener.
+ public void onAttach(Activity parentActivity) {
+ super.onAttach(parentActivity);
+ try {
+ downloadFileListener = (DownloadFileListener) parentActivity;
+ } catch (ClassCastException exception) {
+ throw new ClassCastException(parentActivity.toString() + " must implement DownloadFileListener.");
+ }
+ }
+
+ @Override
+ 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);
+ dialogBuilder.setTitle(R.string.file_download);
+ // 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.
+ }
+ });
+
+ // 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(DownloadFile.this, downloadUrl);
+ }
+ });
+
+
+ // Create an `AlertDialog` from the `AlertDialog.Builder`.
+ final AlertDialog alertDialog = dialogBuilder.create();
+
+ // 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 of 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(DownloadFile.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