--- /dev/null
+/*
+ * Copyright © 2019-2021 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.Dialog
+import android.content.Context
+import android.content.DialogInterface
+import android.content.Intent
+import android.content.res.Configuration
+import android.os.AsyncTask
+import android.os.Bundle
+import android.text.Editable
+import android.text.InputType
+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.appcompat.app.AlertDialog
+import androidx.fragment.app.DialogFragment
+import androidx.preference.PreferenceManager
+
+import com.google.android.material.textfield.TextInputLayout
+
+import com.stoutner.privacybrowser.R
+import com.stoutner.privacybrowser.activities.MainWebViewActivity
+import com.stoutner.privacybrowser.asynctasks.GetUrlSize
+
+// Define the class constants.
+private const val SAVE_TYPE = "save_type"
+private const val URL_STRING = "url_string"
+private const val FILE_SIZE_STRING = "file_size_string"
+private const val FILE_NAME_STRING = "file_name_string"
+private const val USER_AGENT_STRING = "user_agent_string"
+private const val COOKIES_ENABLED = "cookies_enabled"
+
+class SaveWebpageDialog : DialogFragment() {
+ // Declare the class variables.
+ private lateinit var saveWebpageListener: SaveWebpageListener
+
+ // Define the class variables.
+ private var getUrlSize: AsyncTask<*, *, *>? = null
+
+ // The public interface is used to send information back to the parent activity.
+ interface SaveWebpageListener {
+ fun onSaveWebpage(saveType: Int, originalUrlString: String?, dialogFragment: DialogFragment)
+ }
+
+ override fun onAttach(context: Context) {
+ // Run the default commands.
+ super.onAttach(context)
+
+ // Get a handle for the save webpage listener from the launching context.
+ saveWebpageListener = context as SaveWebpageListener
+ }
+
+ companion object {
+ // Define the companion object constants. These can be moved to class constants once all of the code has transitioned to Kotlin.
+ const val SAVE_URL = 0
+ const val SAVE_IMAGE = 1
+
+ // `@JvmStatic` will no longer be required once all the code has transitioned to Kotlin.
+ @JvmStatic
+ fun saveWebpage(saveType: Int, urlString: String?, fileSizeString: String?, fileNameString: String, userAgentString: String?, cookiesEnabled: Boolean): SaveWebpageDialog {
+ // Create an arguments bundle.
+ val argumentsBundle = Bundle()
+
+ // Store the arguments in the bundle.
+ argumentsBundle.putInt(SAVE_TYPE, saveType)
+ argumentsBundle.putString(URL_STRING, urlString)
+ argumentsBundle.putString(FILE_SIZE_STRING, fileSizeString)
+ argumentsBundle.putString(FILE_NAME_STRING, fileNameString)
+ argumentsBundle.putString(USER_AGENT_STRING, userAgentString)
+ argumentsBundle.putBoolean(COOKIES_ENABLED, cookiesEnabled)
+
+ // Create a new instance of the save webpage dialog.
+ val saveWebpageDialog = SaveWebpageDialog()
+
+ // Add the arguments bundle to the new dialog.
+ saveWebpageDialog.arguments = argumentsBundle
+
+ // Return the new dialog.
+ return saveWebpageDialog
+ }
+ }
+
+ // `@SuppressLint("InflateParams")` removes the warning about using null as the parent view group when inflating the alert dialog.
+ @SuppressLint("InflateParams")
+ override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+ // Get the arguments from the bundle.
+ val saveType = requireArguments().getInt(SAVE_TYPE)
+ val originalUrlString = requireArguments().getString(URL_STRING)
+ val fileSizeString = requireArguments().getString(FILE_SIZE_STRING)
+ val fileNameString = requireArguments().getString(FILE_NAME_STRING)!!
+ val userAgentString = requireArguments().getString(USER_AGENT_STRING)
+ val cookiesEnabled = requireArguments().getBoolean(COOKIES_ENABLED)
+
+ // Use an alert dialog builder to create the alert dialog.
+ val dialogBuilder = AlertDialog.Builder(requireContext(), R.style.PrivacyBrowserAlertDialog)
+
+ // Get the current theme status.
+ val currentThemeStatus = resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK
+
+ // Set the title and icon according to the save type.
+ when (saveType) {
+ SAVE_URL -> {
+ // Set the title.
+ dialogBuilder.setTitle(R.string.save_url)
+
+ // Set the icon according to the theme.
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
+ dialogBuilder.setIcon(R.drawable.copy_enabled_day)
+ } else {
+ dialogBuilder.setIcon(R.drawable.copy_enabled_night)
+ }
+ }
+
+ SAVE_IMAGE -> {
+ // Set the title.
+ dialogBuilder.setTitle(R.string.save_image)
+
+ // Set the icon according to the theme.
+ if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {
+ dialogBuilder.setIcon(R.drawable.images_enabled_day)
+ } else {
+ dialogBuilder.setIcon(R.drawable.images_enabled_night)
+ }
+ }
+ }
+
+ // Set the view. The parent view is null because it will be assigned by the alert dialog.
+ dialogBuilder.setView(layoutInflater.inflate(R.layout.save_webpage_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, _: Int ->
+ // Return the dialog fragment to the parent activity.
+ saveWebpageListener.onSaveWebpage(saveType, originalUrlString, this)
+ }
+
+ // Create an alert dialog from the builder.
+ val alertDialog = dialogBuilder.create()
+
+ // Get a handle for the shared preferences.
+ val sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context)
+
+ // Get the screenshot preference.
+ val allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false)
+
+ // Disable screenshots if not allowed.
+ if (!allowScreenshots) {
+ alertDialog.window!!.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.
+ val urlTextInputLayout = alertDialog.findViewById<TextInputLayout>(R.id.url_textinputlayout)!!
+ val urlEditText = alertDialog.findViewById<EditText>(R.id.url_edittext)!!
+ val fileNameEditText = alertDialog.findViewById<EditText>(R.id.file_name_edittext)!!
+ val browseButton = alertDialog.findViewById<Button>(R.id.browse_button)!!
+ val fileSizeTextView = alertDialog.findViewById<TextView>(R.id.file_size_textview)!!
+ val saveButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE)
+
+ // Set the file size text view.
+ fileSizeTextView.text = fileSizeString
+
+ // Modify the layout based on the save type.
+ if (saveType == SAVE_URL) { // A URL is being saved.
+ // Populate the URL edit text according to the type. This must be done before the text change listener is created below so that the file size isn't requested again.
+ if (originalUrlString!!.startsWith("data:")) { // The URL contains the entire data of an image.
+ // Get a substring of the data URL with the first 100 characters. Otherwise, the user interface will freeze while trying to layout the edit text.
+ val urlSubstring = originalUrlString.substring(0, 100) + "…"
+
+ // Populate the URL edit text with the truncated URL.
+ urlEditText.setText(urlSubstring)
+
+ // Disable the editing of the URL edit text.
+ urlEditText.inputType = InputType.TYPE_NULL
+ } else { // The URL contains a reference to the location of the data.
+ // Populate the URL edit text with the full URL.
+ urlEditText.setText(originalUrlString)
+ }
+
+ // Update the file size and the status of the save button when the URL changes.
+ urlEditText.addTextChangedListener(object : TextWatcher {
+ override fun beforeTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {
+ // Do nothing.
+ }
+
+ override fun onTextChanged(charSequence: CharSequence, i: Int, i1: Int, i2: Int) {
+ // Do nothing.
+ }
+
+ override fun afterTextChanged(editable: Editable) {
+ // Cancel the get URL size AsyncTask if it is running.
+ if (getUrlSize != null) {
+ getUrlSize!!.cancel(true)
+ }
+
+ // Get the current URL to save.
+ val urlToSave = urlEditText.text.toString()
+
+ // Wipe the file size text view.
+ fileSizeTextView.text = ""
+
+ // Get the file size for the current URL.
+ getUrlSize = GetUrlSize(context, alertDialog, userAgentString, cookiesEnabled).execute(urlToSave)
+
+ // Enable the save button if the URL and file name are populated.
+ saveButton.isEnabled = urlToSave.isNotEmpty() && fileNameEditText.text.toString().isNotEmpty()
+ }
+ })
+ } else { // An archive or an image is being saved.
+ // Hide the URL edit text and the file size text view.
+ urlTextInputLayout.visibility = View.GONE
+ fileSizeTextView.visibility = View.GONE
+ }
+
+ // Initially disable the save button.
+ saveButton.isEnabled = false
+
+ // Update the status of the save button when the file name changes.
+ fileNameEditText.addTextChangedListener(object : TextWatcher {
+ override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {
+ // Do nothing.
+ }
+
+ override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
+ // Do nothing.
+ }
+
+ override fun afterTextChanged(s: Editable) {
+ // Enable the save button based on the save type.
+ if (saveType == SAVE_URL) { // A URL is being saved.
+ // Enable the save button if the file name and the URL are populated.
+ saveButton.isEnabled = fileNameEditText.text.toString().isNotEmpty() && urlEditText.text.toString().isNotEmpty()
+ } else { // An archive or an image is being saved.
+ // Enable the save button if the file name is populated.
+ saveButton.isEnabled = fileNameEditText.text.toString().isNotEmpty()
+ }
+ }
+ })
+
+ // Handle clicks on the browse button.
+ browseButton.setOnClickListener {
+ // Create the file picker intent.
+ val browseIntent = Intent(Intent.ACTION_CREATE_DOCUMENT)
+
+ // Set the intent MIME type to include all files so that everything is visible.
+ browseIntent.type = "*/*"
+
+ // Set the initial file name according to the type.
+ browseIntent.putExtra(Intent.EXTRA_TITLE, fileNameString)
+
+ // 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.
+ requireActivity().startActivityForResult(browseIntent, MainWebViewActivity.BROWSE_SAVE_WEBPAGE_REQUEST_CODE)
+ }
+
+ // Return the alert dialog.
+ return alertDialog
+ }
+}
\ No newline at end of file
projects / PrivacyBrowserAndroid.git / blobdiff