X-Git-Url: https://gitweb.stoutner.com/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2FDownloadFile.java;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2FDownloadFile.java;h=4bdc879abb113e08064898a44e442799129925ad;hb=a45494e763affaa93f42927ee58f45803e1ee9db;hp=0000000000000000000000000000000000000000;hpb=826776d415157b99701dd19d2713a60db6fefe2c;p=PrivacyBrowserAndroid.git diff --git a/app/src/main/java/com/stoutner/privacybrowser/DownloadFile.java b/app/src/main/java/com/stoutner/privacybrowser/DownloadFile.java new file mode 100644 index 00000000..4bdc879a --- /dev/null +++ b/app/src/main/java/com/stoutner/privacybrowser/DownloadFile.java @@ -0,0 +1,169 @@ +/** + * Copyright 2016 Soren Stoutner . + * + * This file is part of 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 . + */ + +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; + } +} \ No newline at end of file