X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FSaveWebpageDialog.java;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FSaveWebpageDialog.java;h=1c24e0bedc6ca95f4414c74ae3c92bd92001c205;hp=0000000000000000000000000000000000000000;hb=5d3cafb4a4fbb2bf851d36f973cc1e8b23ecebab;hpb=01d647c09b892384e0b42e86b000b5cb858f7a2b diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/SaveWebpageDialog.java b/app/src/main/java/com/stoutner/privacybrowser/dialogs/SaveWebpageDialog.java new file mode 100644 index 00000000..1c24e0be --- /dev/null +++ b/app/src/main/java/com/stoutner/privacybrowser/dialogs/SaveWebpageDialog.java @@ -0,0 +1,284 @@ +/* + * Copyright © 2019 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.dialogs; + +import android.Manifest; +import android.annotation.SuppressLint; +import android.app.Activity; +import android.app.AlertDialog; +import android.app.Dialog; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.SharedPreferences; +import android.content.pm.PackageManager; +import android.os.Build; +import android.os.Bundle; +import android.os.Environment; +import android.provider.DocumentsContract; +import android.text.Editable; +import android.text.TextWatcher; +import android.view.View; +import android.view.WindowManager; +import android.widget.Button; +import android.widget.EditText; +import android.widget.TextView; + +import androidx.annotation.NonNull; +import androidx.core.content.ContextCompat; +import androidx.fragment.app.DialogFragment; +import androidx.preference.PreferenceManager; + +import com.stoutner.privacybrowser.R; +import com.stoutner.privacybrowser.activities.MainWebViewActivity; + +public class SaveWebpageDialog extends DialogFragment { + // Define the save type constants. + public static final int ARCHIVE = 0; + public static final int IMAGE = 1; + + // Define the save webpage listener. + private SaveWebpageListener saveWebpageListener; + + // The public interface is used to send information back to the parent activity. + public interface SaveWebpageListener { + void onSaveWebpage(int saveType, DialogFragment dialogFragment); + } + + @Override + public void onAttach(@NonNull Context context) { + // Run the default commands. + super.onAttach(context); + + // Get a handle for the save webpage listener from the launching context. + saveWebpageListener = (SaveWebpageListener) context; + } + + public static SaveWebpageDialog saveWebpage(int saveType) { + // Create an arguments bundle. + Bundle argumentsBundle = new Bundle(); + + // Store the save type in the bundle. + argumentsBundle.putInt("save_type", saveType); + + // Create a new instance of the save webpage dialog. + SaveWebpageDialog saveWebpageDialog = new SaveWebpageDialog(); + + // Add the arguments bundle to the new dialog. + saveWebpageDialog.setArguments(argumentsBundle); + + // Return the new dialog. + return saveWebpageDialog; + } + + // `@SuppressLing("InflateParams")` removes the warning about using null as the parent view group when inflating the alert dialog. + @SuppressLint("InflateParams") + @Override + @NonNull + public Dialog onCreateDialog(Bundle savedInstanceState) { + // Get a handle for the arguments. + Bundle arguments = getArguments(); + + // Remove the incorrect lint warning that the arguments might be null. + assert arguments != null; + + // Get the save type. + int saveType = arguments.getInt("save_type"); + + // Get a handle for the activity and the context. + Activity activity = getActivity(); + Context context = getContext(); + + // Remove the incorrect lint warnings below that the activity and context might be null. + assert activity != null; + assert context != null; + + // Get a handle for the shared preferences. + SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context); + + // Get the screenshot and theme preferences. + boolean darkTheme = sharedPreferences.getBoolean("dark_theme", false); + boolean allowScreenshots = sharedPreferences.getBoolean("allow_screenshots", false); + + // Use an alert dialog builder to create the alert dialog. + AlertDialog.Builder dialogBuilder; + + // Set the style and icon according to the theme. + if (darkTheme) { + // Set the style. + dialogBuilder = new AlertDialog.Builder(activity, R.style.PrivacyBrowserAlertDialogDark); + + // Set the icon according to the save type. + switch (saveType) { + case ARCHIVE: + dialogBuilder.setIcon(R.drawable.dom_storage_cleared_dark); + break; + + case IMAGE: + dialogBuilder.setIcon(R.drawable.images_enabled_dark); + break; + } + } else { + // Set the style. + dialogBuilder = new AlertDialog.Builder(activity, R.style.PrivacyBrowserAlertDialogLight); + + // Set the icon according to the save type. + switch (saveType) { + case ARCHIVE: + dialogBuilder.setIcon(R.drawable.dom_storage_cleared_light); + break; + + case IMAGE: + dialogBuilder.setIcon(R.drawable.images_enabled_light); + break; + } + } + + // Set the title according to the type. + switch (saveType) { + case ARCHIVE: + dialogBuilder.setTitle(R.string.save_archive); + break; + + case IMAGE: + dialogBuilder.setTitle(R.string.save_image); + break; + } + + // Set the view. The parent view is null because it will be assigned by the alert dialog. + dialogBuilder.setView(activity.getLayoutInflater().inflate(R.layout.save_dialog, null)); + + // Set the cancel button listener. Using `null` as the listener closes the dialog without doing anything else. + dialogBuilder.setNegativeButton(R.string.cancel, null); + + // Set the save button listener. + dialogBuilder.setPositiveButton(R.string.save, (DialogInterface dialog, int which) -> { + // Return the dialog fragment to the parent activity. + saveWebpageListener.onSaveWebpage(saveType, this); + }); + + // Create an alert dialog from the builder. + AlertDialog alertDialog = dialogBuilder.create(); + + // Remove the incorrect lint 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); + } + + // The alert dialog must be shown before items in the layout can be modified. + alertDialog.show(); + + // Get handles for the layout items. + EditText fileNameEditText = alertDialog.findViewById(R.id.file_name_edittext); + Button browseButton = alertDialog.findViewById(R.id.browse_button); + TextView storagePermissionTextView = alertDialog.findViewById(R.id.storage_permission_textview); + Button saveButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE); + + // Create a default file name string. + String defaultFileName = ""; + + // Set the default file name according to the type. + switch (saveType) { + case ARCHIVE: + defaultFileName = getString(R.string.webpage_mht); + break; + + case IMAGE: + defaultFileName = getString(R.string.webpage_png); + break; + } + + // Create a string for the default file path. + String defaultFilePath; + + // Set the default file path according to the storage permission state. + if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { // The storage permission has been granted. + // Set the default file path to use the external public directory. + defaultFilePath = Environment.getExternalStorageDirectory() + "/" + defaultFileName; + } else { // The storage permission has not been granted. + // Set the default file path to use the external private directory. + defaultFilePath = context.getExternalFilesDir(null) + "/" + defaultFileName; + } + + // Display the default file path. + fileNameEditText.setText(defaultFilePath); + + // Update the status of the save button when the file name changes. + fileNameEditText.addTextChangedListener(new TextWatcher() { + @Override + public void beforeTextChanged(CharSequence s, int start, int count, int after) { + // Do nothing. + } + + @Override + public void onTextChanged(CharSequence s, int start, int before, int count) { + // Do nothing. + } + + @Override + public void afterTextChanged(Editable s) { + // // Enable the save button if a file name exists. + saveButton.setEnabled(!fileNameEditText.getText().toString().isEmpty()); + } + }); + + // Handle clicks on the browse button. + browseButton.setOnClickListener((View view) -> { + // Create the file picker intent. + Intent browseIntent = new Intent(Intent.ACTION_CREATE_DOCUMENT); + + // Set the intent MIME type to include all files so that everything is visible. + browseIntent.setType("*/*"); + + // Set the initial file name according to the type. + switch (saveType) { + case ARCHIVE: + browseIntent.putExtra(Intent.EXTRA_TITLE, getString(R.string.webpage_mht)); + break; + + case IMAGE: + browseIntent.putExtra(Intent.EXTRA_TITLE, getString(R.string.webpage_png)); + break; + } + + // Set the initial directory if the minimum API >= 26. + if (Build.VERSION.SDK_INT >= 26) { + browseIntent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, Environment.getExternalStorageDirectory()); + } + + // Request a file that can be opened. + browseIntent.addCategory(Intent.CATEGORY_OPENABLE); + + // Start the file picker. This must be started under `activity` so that the request code is returned correctly. + activity.startActivityForResult(browseIntent, MainWebViewActivity.BROWSE_SAVE_WEBPAGE_REQUEST_CODE); + }); + + // Hide the storage permission text view on API < 23 as permissions on older devices are automatically granted. + if (Build.VERSION.SDK_INT < 23) { + storagePermissionTextView.setVisibility(View.GONE); + } + + // Return the alert dialog. + return alertDialog; + } +} \ No newline at end of file