X-Git-Url: https://gitweb.stoutner.com/?a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FSaveWebpageDialog.kt;fp=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Fdialogs%2FSaveWebpageDialog.kt;h=b27e1703b6537b04022560eada2122b9f4556f6d;hb=031def95c6d9bfc14113fe86b4a5690233d93ce2;hp=0000000000000000000000000000000000000000;hpb=f3b9172adedd74f705ddc0beac80798ae84f2920;p=PrivacyBrowserAndroid.git

diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/SaveWebpageDialog.kt b/app/src/main/java/com/stoutner/privacybrowser/dialogs/SaveWebpageDialog.kt
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+/*
+ * 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