X-Git-Url: https://gitweb.stoutner.com/?p=PrivacyBrowserAndroid.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fcom%2Fstoutner%2Fprivacybrowser%2Factivities%2FBookmarksDatabaseViewActivity.java;h=91afa6d64120a2d15d1bbba2b53083b4e7ae22bc;hp=53fb657d4cebe31d25cf67027635ebe4a7e9a132;hb=1b27ac6f2b7c046945fc97e2aff9adbde8a152ce;hpb=922fa1656fdc20242c266346ea30d4c2e9489eb9 diff --git a/app/src/main/java/com/stoutner/privacybrowser/activities/BookmarksDatabaseViewActivity.java b/app/src/main/java/com/stoutner/privacybrowser/activities/BookmarksDatabaseViewActivity.java index 53fb657d..91afa6d6 100644 --- a/app/src/main/java/com/stoutner/privacybrowser/activities/BookmarksDatabaseViewActivity.java +++ b/app/src/main/java/com/stoutner/privacybrowser/activities/BookmarksDatabaseViewActivity.java @@ -1,133 +1,348 @@ /* - * Copyright © 2016-2017 Soren Stoutner . + * Copyright © 2016-2022 Soren Stoutner . * - * This file is part of Privacy Browser . + * This file is part of Privacy Browser Android . * - * Privacy Browser is free software: you can redistribute it and/or modify + * Privacy Browser Android 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, + * Privacy Browser Android 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 . + * along with Privacy Browser Android. If not, see . */ package com.stoutner.privacybrowser.activities; +import android.annotation.SuppressLint; +import android.app.Dialog; import android.content.Context; +import android.content.Intent; +import android.content.SharedPreferences; +import android.content.res.Configuration; import android.database.Cursor; +import android.database.MatrixCursor; +import android.database.MergeCursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Typeface; +import android.graphics.drawable.BitmapDrawable; +import android.graphics.drawable.Drawable; import android.os.Bundle; -import android.support.v4.content.ContextCompat; -import android.support.v4.widget.CursorAdapter; -import android.support.v7.app.ActionBar; -import android.support.v7.app.AppCompatActivity; -import android.support.v7.widget.Toolbar; +import android.preference.PreferenceManager; +import android.util.SparseBooleanArray; +import android.view.ActionMode; +import android.view.Menu; +import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; +import android.view.Window; +import android.view.WindowManager; +import android.widget.AbsListView; +import android.widget.AdapterView; +import android.widget.EditText; import android.widget.ImageView; import android.widget.ListView; +import android.widget.RadioButton; +import android.widget.ResourceCursorAdapter; +import android.widget.Spinner; import android.widget.TextView; +import androidx.annotation.NonNull; +import androidx.appcompat.app.ActionBar; +import androidx.appcompat.app.AppCompatActivity; +import androidx.appcompat.widget.Toolbar; // The AndroidX toolbar must be used until the minimum API is >= 21. +import androidx.core.content.ContextCompat; +import androidx.cursoradapter.widget.CursorAdapter; +import androidx.fragment.app.DialogFragment; // The AndroidX dialog fragment must be used or an error is produced on API <=22. + +import com.google.android.material.snackbar.Snackbar; + import com.stoutner.privacybrowser.R; +import com.stoutner.privacybrowser.dialogs.EditBookmarkDatabaseViewDialog; +import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDatabaseViewDialog; import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper; -public class BookmarksDatabaseViewActivity extends AppCompatActivity { - // `bookmarksDatabaseHelper` is used in `onCreate()` and `updateBookmarksListView()`. - private BookmarksDatabaseHelper bookmarksDatabaseHelper; +import java.io.ByteArrayOutputStream; +import java.util.Arrays; + +public class BookmarksDatabaseViewActivity extends AppCompatActivity implements EditBookmarkDatabaseViewDialog.EditBookmarkDatabaseViewListener, + EditBookmarkFolderDatabaseViewDialog.EditBookmarkFolderDatabaseViewListener { + // Define the class constants. + private static final int ALL_FOLDERS_DATABASE_ID = -2; + public static final int HOME_FOLDER_DATABASE_ID = -1; - // `bookmarksListView` is used in `onCreate()` and `updateBookmarksListView()`. - private ListView bookmarksListView; + // Define the saved instance state constants. + private final String CURRENT_FOLDER_DATABASE_ID = "current_folder_database_id"; + private final String CURRENT_FOLDER_NAME = "current_folder_name"; + private final String SORT_BY_DISPLAY_ORDER = "sort_by_display_order"; + + // Define the class variables. + private int currentFolderDatabaseId; + private String currentFolderName; + private boolean sortByDisplayOrder; + private BookmarksDatabaseHelper bookmarksDatabaseHelper; + private Cursor bookmarksCursor; + private CursorAdapter bookmarksCursorAdapter; + private String oldFolderNameString; + private Snackbar bookmarksDeletedSnackbar; + private boolean closeActivityAfterDismissingSnackbar; @Override public void onCreate(Bundle savedInstanceState) { + // Get a handle for the shared preferences. + SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); + + // Get the preferences. + boolean allowScreenshots = sharedPreferences.getBoolean(getString(R.string.allow_screenshots_key), false); + boolean bottomAppBar = sharedPreferences.getBoolean(getString(R.string.bottom_app_bar_key), false); + + // Disable screenshots if not allowed. + if (!allowScreenshots) { + getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE); + } + // Set the activity theme. - if (MainWebViewActivity.darkTheme) { - setTheme(R.style.PrivacyBrowserDark_SecondaryActivity); + setTheme(R.style.PrivacyBrowser); + + // Run the default commands. + super.onCreate(savedInstanceState); + + // Get the intent that launched the activity. + Intent launchingIntent = getIntent(); + + // Get the favorite icon byte array. + byte[] favoriteIconByteArray = launchingIntent.getByteArrayExtra("favorite_icon_byte_array"); + + // Remove the incorrect lint warning below that the favorite icon byte array might be null. + assert favoriteIconByteArray != null; + + // Convert the favorite icon byte array to a bitmap and store it in a class variable. + Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length); + + // Set the view according to the theme. + if (bottomAppBar) { + // Set the content view. + setContentView(R.layout.bookmarks_databaseview_bottom_appbar); } else { - setTheme(R.style.PrivacyBrowserLight_SecondaryActivity); + // `Window.FEATURE_ACTION_MODE_OVERLAY` makes the contextual action mode cover the support action bar. It must be requested before the content is set. + supportRequestWindowFeature(Window.FEATURE_ACTION_MODE_OVERLAY); + + // Set the content view. + setContentView(R.layout.bookmarks_databaseview_top_appbar); } - super.onCreate(savedInstanceState); - setContentView(R.layout.bookmarks_database_view_coordinatorlayout); + // Get a handle for the toolbar. + Toolbar toolbar = findViewById(R.id.bookmarks_databaseview_toolbar); + + // Set the support action bar. + setSupportActionBar(toolbar); - // We need to use the `SupportActionBar` from `android.support.v7.app.ActionBar` until the minimum API is >= 21. - final Toolbar bookmarksDatabaseViewAppBar = (Toolbar) findViewById(R.id.bookmarks_database_view_toolbar); - setSupportActionBar(bookmarksDatabaseViewAppBar); + // Get a handle for the action bar. + ActionBar actionBar = getSupportActionBar(); - // Display the home arrow on `SupportActionBar`. - final ActionBar appBar = getSupportActionBar(); - assert appBar != null; // This assert removes the incorrect warning in Android Studio on the following line that appBar might be null. - appBar.setDisplayHomeAsUpEnabled(true); + // Remove the incorrect lint warning that the action bar might be null. + assert actionBar != null; - // Initialize the database handler and the ListView. - // `this` specifies the context. The two `null`s do not specify the database name or a `CursorFactory`. - // The `0` is to specify a database version, but that is set instead using a constant in `BookmarksDatabaseHelper`. + // Display the spinner and the back arrow in the action bar. + actionBar.setCustomView(R.layout.spinner); + actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_HOME_AS_UP); + + // Initialize the database handler. The `0` is to specify a database version, but that is set instead using a constant in `BookmarksDatabaseHelper`. bookmarksDatabaseHelper = new BookmarksDatabaseHelper(this, null, null, 0); - bookmarksListView = (ListView) findViewById(R.id.bookmarks_database_view_listview); - // Display the bookmarks in the ListView. - updateBookmarksListView(); + // Setup a matrix cursor for "All Folders" and "Home Folder". + String[] matrixCursorColumnNames = {BookmarksDatabaseHelper._ID, BookmarksDatabaseHelper.BOOKMARK_NAME}; + MatrixCursor matrixCursor = new MatrixCursor(matrixCursorColumnNames); + matrixCursor.addRow(new Object[]{ALL_FOLDERS_DATABASE_ID, getString(R.string.all_folders)}); + matrixCursor.addRow(new Object[]{HOME_FOLDER_DATABASE_ID, getString(R.string.home_folder)}); - } + // Get a cursor with the list of all the folders. + Cursor foldersCursor = bookmarksDatabaseHelper.getAllFolders(); - private void updateBookmarksListView() { - // Get a `Cursor` with the current contents of the bookmarks database. - final Cursor bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksCursor(); + // Combine the matrix cursor and the folders cursor. + MergeCursor foldersMergeCursor = new MergeCursor(new Cursor[]{matrixCursor, foldersCursor}); + + + // Get the default folder bitmap. `ContextCompat` must be used until the minimum API >= 21. + Drawable defaultFolderDrawable = ContextCompat.getDrawable(getApplicationContext(), R.drawable.folder_blue_bitmap); + + // Cast the default folder drawable to a bitmap drawable. + BitmapDrawable defaultFolderBitmapDrawable = (BitmapDrawable) defaultFolderDrawable; + + // Remove the incorrect lint warning that `.getBitmap()` might be null. + assert defaultFolderBitmapDrawable != null; + + // Convert the default folder bitmap drawable to a bitmap. + Bitmap defaultFolderBitmap = defaultFolderBitmapDrawable.getBitmap(); + + + // Create a resource cursor adapter for the spinner. + ResourceCursorAdapter foldersCursorAdapter = new ResourceCursorAdapter(this, R.layout.appbar_spinner_item, foldersMergeCursor, 0) { + @Override + public void bindView(View view, Context context, Cursor cursor) { + // Get handles for the spinner views. + ImageView spinnerItemImageView = view.findViewById(R.id.spinner_item_imageview); + TextView spinnerItemTextView = view.findViewById(R.id.spinner_item_textview); + + // Set the folder icon according to the type. + if (foldersMergeCursor.getPosition() > 1) { // Set a user folder icon. + // Initialize a default folder icon byte array output stream. + ByteArrayOutputStream defaultFolderIconByteArrayOutputStream = new ByteArrayOutputStream(); + + // Covert the default folder bitmap to a PNG and store it in the output stream. `0` is for lossless compression (the only option for a PNG). + defaultFolderBitmap.compress(Bitmap.CompressFormat.PNG, 0, defaultFolderIconByteArrayOutputStream); + + // Convert the default folder icon output stream to a byte array. + byte[] defaultFolderIconByteArray = defaultFolderIconByteArrayOutputStream.toByteArray(); + + + // Get the folder icon byte array from the cursor. + byte[] folderIconByteArray = cursor.getBlob(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.FAVORITE_ICON)); + + // Convert the byte array to a bitmap beginning at the first byte and ending at the last. + Bitmap folderIconBitmap = BitmapFactory.decodeByteArray(folderIconByteArray, 0, folderIconByteArray.length); + + + // Set the icon according to the type. + if (Arrays.equals(folderIconByteArray, defaultFolderIconByteArray)) { // The default folder icon is used. + // Set a smaller and darker folder icon, which works well with the spinner. + spinnerItemImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.folder_dark_blue)); + } else { // A custom folder icon is uses. + // Set the folder image stored in the cursor. + spinnerItemImageView.setImageBitmap(folderIconBitmap); + } + } else { // Set the `All Folders` or `Home Folder` icon. + // Set the gray folder image. `ContextCompat` must be used until the minimum API >= 21. + spinnerItemImageView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.folder_gray)); + } + + // Set the text view to display the folder name. + spinnerItemTextView.setText(cursor.getString(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME))); + } + }; + + // Set the resource cursor adapter drop drown view resource. + foldersCursorAdapter.setDropDownViewResource(R.layout.appbar_spinner_dropdown_item); + + // Get a handle for the folder spinner and set the adapter. + Spinner folderSpinner = findViewById(R.id.spinner); + folderSpinner.setAdapter(foldersCursorAdapter); + + // Wait to set the on item selected listener until the spinner has been inflated. Otherwise the activity will crash on restart. + folderSpinner.post(() -> { + // Handle taps on the spinner dropdown. + folderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { + @Override + public void onItemSelected(AdapterView parent, View view, int position, long id) { + // Store the current folder database ID. + currentFolderDatabaseId = (int) id; + + // Get a handle for the selected view. + TextView selectedFolderTextView = findViewById(R.id.spinner_item_textview); + + // Store the current folder name. + currentFolderName = selectedFolderTextView.getText().toString(); + + // Update the list view. + updateBookmarksListView(); + } + + @Override + public void onNothingSelected(AdapterView parent) { + // Do nothing. + } + }); + }); + + + // Get a handle for the bookmarks listview. + ListView bookmarksListView = findViewById(R.id.bookmarks_databaseview_listview); + + // Check to see if the activity was restarted. + if (savedInstanceState == null) { // The activity was not restarted. + // Set the default current folder database ID. + currentFolderDatabaseId = ALL_FOLDERS_DATABASE_ID; + } else { // The activity was restarted. + // Restore the class variables from the saved instance state. + currentFolderDatabaseId = savedInstanceState.getInt(CURRENT_FOLDER_DATABASE_ID); + currentFolderName = savedInstanceState.getString(CURRENT_FOLDER_NAME); + sortByDisplayOrder = savedInstanceState.getBoolean(SORT_BY_DISPLAY_ORDER); + + // Update the spinner if the home folder is selected. Android handles this by default for the main cursor but not the matrix cursor. + if (currentFolderDatabaseId == HOME_FOLDER_DATABASE_ID) { + folderSpinner.setSelection(1); + } + } + + // Update the bookmarks listview. + updateBookmarksListView(); - // Setup `bookmarksCursorAdapter` with `this` context. The `false` disables autoRequery. - CursorAdapter bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) { + // Setup a `CursorAdapter` with `this` context. `false` disables autoRequery. + bookmarksCursorAdapter = new CursorAdapter(this, bookmarksCursor, false) { @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { // Inflate the individual item layout. `false` does not attach it to the root. - return getLayoutInflater().inflate(R.layout.bookmarks_database_view_item_linearlayout, parent, false); + return getLayoutInflater().inflate(R.layout.bookmarks_databaseview_item_linearlayout, parent, false); } @Override public void bindView(View view, Context context, Cursor cursor) { - boolean isFolder = (cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.IS_FOLDER)) == 1); + boolean isFolder = (cursor.getInt(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.IS_FOLDER)) == 1); // Get the database ID from the `Cursor` and display it in `bookmarkDatabaseIdTextView`. - int bookmarkDatabaseId = cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper._ID)); - TextView bookmarkDatabaseIdTextView = (TextView) view.findViewById(R.id.bookmarks_database_view_database_id); + int bookmarkDatabaseId = cursor.getInt(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper._ID)); + TextView bookmarkDatabaseIdTextView = view.findViewById(R.id.bookmarks_databaseview_database_id); bookmarkDatabaseIdTextView.setText(String.valueOf(bookmarkDatabaseId)); // Get the favorite icon byte array from the `Cursor`. - byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON)); + byte[] favoriteIconByteArray = cursor.getBlob(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.FAVORITE_ICON)); // Convert the byte array to a `Bitmap` beginning at the beginning at the first byte and ending at the last. Bitmap favoriteIconBitmap = BitmapFactory.decodeByteArray(favoriteIconByteArray, 0, favoriteIconByteArray.length); // Display the bitmap in `bookmarkFavoriteIcon`. - ImageView bookmarkFavoriteIcon = (ImageView) view.findViewById(R.id.bookmarks_database_view_favorite_icon); + ImageView bookmarkFavoriteIcon = view.findViewById(R.id.bookmarks_databaseview_favorite_icon); bookmarkFavoriteIcon.setImageBitmap(favoriteIconBitmap); // Get the bookmark name from the `Cursor` and display it in `bookmarkNameTextView`. - String bookmarkNameString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)); - TextView bookmarkNameTextView = (TextView) view.findViewById(R.id.bookmarks_database_view_bookmark_name); + String bookmarkNameString = cursor.getString(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME)); + TextView bookmarkNameTextView = view.findViewById(R.id.bookmarks_databaseview_bookmark_name); bookmarkNameTextView.setText(bookmarkNameString); + // Make the font bold for folders. if (isFolder) { - // The first argument is `null` because we don't want to change the font. + // The first argument is `null` prevent changing of the font. bookmarkNameTextView.setTypeface(null, Typeface.BOLD); } else { // Reset the font to default. bookmarkNameTextView.setTypeface(Typeface.DEFAULT); } + // Get the bookmark URL form the `Cursor` and display it in `bookmarkUrlTextView`. + String bookmarkUrlString = cursor.getString(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_URL)); + TextView bookmarkUrlTextView = view.findViewById(R.id.bookmarks_databaseview_bookmark_url); + bookmarkUrlTextView.setText(bookmarkUrlString); + + // Hide the URL if the bookmark is a folder. + if (isFolder) { + bookmarkUrlTextView.setVisibility(View.GONE); + } else { + bookmarkUrlTextView.setVisibility(View.VISIBLE); + } + // Get the display order from the `Cursor` and display it in `bookmarkDisplayOrderTextView`. - int bookmarkDisplayOrder = cursor.getInt(cursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER)); - TextView bookmarkDisplayOrderTextView = (TextView) view.findViewById(R.id.bookmarks_database_view_display_order); + int bookmarkDisplayOrder = cursor.getInt(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.DISPLAY_ORDER)); + TextView bookmarkDisplayOrderTextView = view.findViewById(R.id.bookmarks_databaseview_display_order); bookmarkDisplayOrderTextView.setText(String.valueOf(bookmarkDisplayOrder)); // Get the parent folder from the `Cursor` and display it in `bookmarkParentFolder`. - String bookmarkParentFolder = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)); - ImageView parentFolderImageView = (ImageView) view.findViewById(R.id.bookmarks_database_view_parent_folder_icon); - TextView bookmarkParentFolderTextView = (TextView) view.findViewById(R.id.bookmarks_database_view_parent_folder); + String bookmarkParentFolder = cursor.getString(cursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.PARENT_FOLDER)); + ImageView parentFolderImageView = view.findViewById(R.id.bookmarks_databaseview_parent_folder_icon); + TextView bookmarkParentFolderTextView = view.findViewById(R.id.bookmarks_databaseview_parent_folder); + // Make the folder name gray if it is the home folder. if (bookmarkParentFolder.isEmpty()) { parentFolderImageView.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(), R.drawable.folder_gray)); @@ -137,27 +352,570 @@ public class BookmarksDatabaseViewActivity extends AppCompatActivity { parentFolderImageView.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(), R.drawable.folder_dark_blue)); bookmarkParentFolderTextView.setText(bookmarkParentFolder); + // Get the current theme status. + int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK; + // Set the text color according to the theme. - if (MainWebViewActivity.darkTheme) { + if (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES) { + // This color is a little darker than the default night mode text. But the effect is rather nice. bookmarkParentFolderTextView.setTextColor(ContextCompat.getColor(getApplicationContext(), R.color.gray_300)); } else { bookmarkParentFolderTextView.setTextColor(ContextCompat.getColor(getApplicationContext(), R.color.black)); } } - - // Get the bookmark URL form the `Cursor` and display it in `bookmarkUrlTextView`. - String bookmarkUrlString = cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL)); - TextView bookmarkUrlTextView = (TextView) view.findViewById(R.id.bookmarks_database_view_bookmark_url); - bookmarkUrlTextView.setText(bookmarkUrlString); - if (isFolder) { - bookmarkUrlTextView.setVisibility(View.GONE); - } else { - bookmarkUrlTextView.setVisibility(View.VISIBLE); - } } }; // Update the ListView. bookmarksListView.setAdapter(bookmarksCursorAdapter); + + // Set a listener to edit a bookmark when it is tapped. + bookmarksListView.setOnItemClickListener((AdapterView parent, View view, int position, long id) -> { + // Convert the database ID to an int. + int databaseId = (int) id; + + // Show the edit bookmark or edit bookmark folder dialog. + if (bookmarksDatabaseHelper.isFolder(databaseId)) { + // Save the current folder name, which is used in `onSaveBookmarkFolder()`. + oldFolderNameString = bookmarksCursor.getString(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper.BOOKMARK_NAME)); + + // Show the edit bookmark folder dialog. + DialogFragment editBookmarkFolderDatabaseViewDialog = EditBookmarkFolderDatabaseViewDialog.folderDatabaseId(databaseId, favoriteIconBitmap); + editBookmarkFolderDatabaseViewDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_folder)); + } else { + // Show the edit bookmark dialog. + DialogFragment editBookmarkDatabaseViewDialog = EditBookmarkDatabaseViewDialog.bookmarkDatabaseId(databaseId, favoriteIconBitmap); + editBookmarkDatabaseViewDialog.show(getSupportFragmentManager(), getResources().getString(R.string.edit_bookmark)); + } + }); + + // Handle long presses on the list view. + bookmarksListView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() { + // Instantiate the common variables. + MenuItem selectAllMenuItem; + MenuItem deleteMenuItem; + boolean deletingBookmarks; + + @Override + public boolean onCreateActionMode(ActionMode mode, Menu menu) { + // Inflate the menu for the contextual app bar. + getMenuInflater().inflate(R.menu.bookmarks_databaseview_context_menu, menu); + + // Set the title. + mode.setTitle(R.string.bookmarks); + + // Get handles for the menu items. + selectAllMenuItem = menu.findItem(R.id.select_all); + deleteMenuItem = menu.findItem(R.id.delete); + + // Disable the delete menu item if a delete is pending. + deleteMenuItem.setEnabled(!deletingBookmarks); + + // Get the number of currently selected bookmarks. + int numberOfSelectedBookmarks = bookmarksListView.getCheckedItemCount(); + + // Set the action mode subtitle according to the number of selected bookmarks. This must be set here or it will be missing if the activity is restarted. + mode.setSubtitle(getString(R.string.selected) + " " + numberOfSelectedBookmarks); + + // Do not show the select all menu item if all the bookmarks are already checked. + if (bookmarksListView.getCheckedItemCount() == bookmarksListView.getCount()) { + selectAllMenuItem.setVisible(false); + } + + // Make it so. + return true; + } + + @Override + public boolean onPrepareActionMode(ActionMode mode, Menu menu) { + // Do nothing. + return false; + } + + @Override + public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) { + // Calculate the number of selected bookmarks. + int numberOfSelectedBookmarks = bookmarksListView.getCheckedItemCount(); + + // Only run the commands if at least one bookmark is selected. Otherwise, a context menu with 0 selected bookmarks is briefly displayed. + if (numberOfSelectedBookmarks > 0) { + // Update the action mode subtitle according to the number of selected bookmarks. + mode.setSubtitle(getString(R.string.selected) + " " + numberOfSelectedBookmarks); + + // Only show the select all menu item if all of the bookmarks are not already selected. + selectAllMenuItem.setVisible(bookmarksListView.getCheckedItemCount() != bookmarksListView.getCount()); + + // Convert the database ID to an int. + int databaseId = (int) id; + + // If a folder was selected, also select all the contents. + if (checked && bookmarksDatabaseHelper.isFolder(databaseId)) { + selectAllBookmarksInFolder(databaseId); + } + + // Do not allow a bookmark to be deselected if the folder is selected. + if (!checked) { + // Get the folder name. + String folderName = bookmarksDatabaseHelper.getParentFolderName((int) id); + + // If the bookmark is not in the root folder, check to see if the folder is selected. + if (!folderName.isEmpty()) { + // Get the database ID of the folder. + int folderDatabaseId = bookmarksDatabaseHelper.getFolderDatabaseId(folderName); + + // Move the bookmarks cursor to the first position. + bookmarksCursor.moveToFirst(); + + // Initialize the folder position variable. + int folderPosition = -1; + + // Get the position of the folder in the bookmarks cursor. + while ((folderPosition < 0) && (bookmarksCursor.getPosition() < bookmarksCursor.getCount())) { + // Check if the folder database ID matches the bookmark database ID. + if (folderDatabaseId == bookmarksCursor.getInt(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper._ID))) { + // Get the folder position. + folderPosition = bookmarksCursor.getPosition(); + + // Check if the folder is selected. + if (bookmarksListView.isItemChecked(folderPosition)) { + // Reselect the bookmark. + bookmarksListView.setItemChecked(position, true); + + // Display a snackbar explaining why the bookmark cannot be deselected. + Snackbar.make(bookmarksListView, R.string.cannot_deselect_bookmark, Snackbar.LENGTH_LONG).show(); + } + } + + // Increment the bookmarks cursor. + bookmarksCursor.moveToNext(); + } + } + } + } + } + + @Override + public boolean onActionItemClicked(ActionMode mode, MenuItem menuItem) { + // Get a the menu item ID. + int menuItemId = menuItem.getItemId(); + + // Run the command that corresponds to the selected menu item. + if (menuItemId == R.id.select_all) { // Select all the bookmarks. + // Get the total number of bookmarks. + int numberOfBookmarks = bookmarksListView.getCount(); + + // Select them all. + for (int i = 0; i < numberOfBookmarks; i++) { + bookmarksListView.setItemChecked(i, true); + } + } else if (menuItemId == R.id.delete) { // Delete the selected bookmarks. + // Set the deleting bookmarks flag, which prevents the delete menu item from being enabled until the current process finishes. + deletingBookmarks = true; + + // Get an array of the selected row IDs. + long[] selectedBookmarksIdsLongArray = bookmarksListView.getCheckedItemIds(); + + // Get an array of checked bookmarks. `.clone()` makes a copy that won't change if the list view is reloaded, which is needed for re-selecting the bookmarks on undelete. + SparseBooleanArray selectedBookmarksPositionsSparseBooleanArray = bookmarksListView.getCheckedItemPositions().clone(); + + // Update the bookmarks cursor with the current contents of the bookmarks database except for the specified database IDs. + switch (currentFolderDatabaseId) { + // Get a cursor with all the folders. + case ALL_FOLDERS_DATABASE_ID: + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksByDisplayOrderExcept(selectedBookmarksIdsLongArray); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksExcept(selectedBookmarksIdsLongArray); + } + break; + + // Get a cursor for the home folder. + case HOME_FOLDER_DATABASE_ID: + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrderExcept(selectedBookmarksIdsLongArray, ""); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksExcept(selectedBookmarksIdsLongArray, ""); + } + break; + + // Display the selected folder. + default: + // Get a cursor for the selected folder. + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrderExcept(selectedBookmarksIdsLongArray, currentFolderName); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksExcept(selectedBookmarksIdsLongArray, currentFolderName); + } + } + + // Update the list view. + bookmarksCursorAdapter.changeCursor(bookmarksCursor); + + // Create a Snackbar with the number of deleted bookmarks. + bookmarksDeletedSnackbar = Snackbar.make(findViewById(R.id.bookmarks_databaseview_coordinatorlayout), + getString(R.string.bookmarks_deleted) + " " + selectedBookmarksIdsLongArray.length, Snackbar.LENGTH_LONG) + .setAction(R.string.undo, view -> { + // Do nothing because everything will be handled by `onDismissed()` below. + }) + .addCallback(new Snackbar.Callback() { + @SuppressLint("SwitchIntDef") // Ignore the lint warning about not handling the other possible events as they are covered by `default:`. + @Override + public void onDismissed(Snackbar snackbar, int event) { + if (event == Snackbar.Callback.DISMISS_EVENT_ACTION) { // The user pushed the undo button. + // Update the bookmarks list view with the current contents of the bookmarks database, including the "deleted bookmarks. + updateBookmarksListView(); + + // Re-select the previously selected bookmarks. + for (int i = 0; i < selectedBookmarksPositionsSparseBooleanArray.size(); i++) { + bookmarksListView.setItemChecked(selectedBookmarksPositionsSparseBooleanArray.keyAt(i), true); + } + } else { // The Snackbar was dismissed without the undo button being pushed. + // Delete each selected bookmark. + for (long databaseIdLong : selectedBookmarksIdsLongArray) { + // Convert `databaseIdLong` to an int. + int databaseIdInt = (int) databaseIdLong; + + // Delete the selected bookmark. + bookmarksDatabaseHelper.deleteBookmark(databaseIdInt); + } + } + + // Reset the deleting bookmarks flag. + deletingBookmarks = false; + + // Enable the delete menu item. + deleteMenuItem.setEnabled(true); + + // Close the activity if back has been pressed. + if (closeActivityAfterDismissingSnackbar) { + onBackPressed(); + } + } + }); + + // Show the Snackbar. + bookmarksDeletedSnackbar.show(); + } + + // Consume the click. + return false; + } + + @Override + public void onDestroyActionMode(ActionMode mode) { + // Do nothing. + } + }); + } + + @Override + public boolean onCreateOptionsMenu(Menu menu) { + // Inflate the menu. + getMenuInflater().inflate(R.menu.bookmarks_databaseview_options_menu, menu); + + // Get a handle for the sort menu item. + MenuItem sortMenuItem = menu.findItem(R.id.sort); + + // Change the sort menu item icon if the listview is sorted by display order, which restores the state after a restart. + if (sortByDisplayOrder) { + sortMenuItem.setIcon(R.drawable.sort_selected); + } + + // Success. + return true; + } + + @Override + public boolean onOptionsItemSelected(MenuItem menuItem) { + // Get the menu item ID. + int menuItemId = menuItem.getItemId(); + + // Run the command that corresponds to the selected menu item. + if (menuItemId == android.R.id.home) { // Go Home. The home arrow is identified as `android.R.id.home`, not just `R.id.home`. + // Exit the activity. + onBackPressed(); + } else if (menuItemId == R.id.sort) { // Toggle the sort mode. + // Update the sort by display order tracker. + sortByDisplayOrder = !sortByDisplayOrder; + + // Get a handle for the bookmarks list view. + ListView bookmarksListView = findViewById(R.id.bookmarks_databaseview_listview); + + // Update the icon and display a snackbar. + if (sortByDisplayOrder) { // Sort by display order. + // Update the icon. + menuItem.setIcon(R.drawable.sort_selected); + + // Display a Snackbar indicating the current sort type. + Snackbar.make(bookmarksListView, R.string.sorted_by_display_order, Snackbar.LENGTH_SHORT).show(); + } else { // Sort by database id. + // Update the icon. + menuItem.setIcon(R.drawable.sort); + + // Display a Snackbar indicating the current sort type. + Snackbar.make(bookmarksListView, R.string.sorted_by_database_id, Snackbar.LENGTH_SHORT).show(); + } + + // Update the list view. + updateBookmarksListView(); + } + + // Consume the event. + return true; + } + + @Override + public void onSaveInstanceState (@NonNull Bundle savedInstanceState) { + // Run the default commands. + super.onSaveInstanceState(savedInstanceState); + + // Store the class variables in the bundle. + savedInstanceState.putInt(CURRENT_FOLDER_DATABASE_ID, currentFolderDatabaseId); + savedInstanceState.putString(CURRENT_FOLDER_NAME, currentFolderName); + savedInstanceState.putBoolean(SORT_BY_DISPLAY_ORDER, sortByDisplayOrder); + } + + @Override + public void onBackPressed() { + // Check to see if a snackbar is currently displayed. If so, it must be closed before existing so that a pending delete is completed before reloading the list view in the bookmarks activity. + if ((bookmarksDeletedSnackbar != null) && bookmarksDeletedSnackbar.isShown()) { // Close the bookmarks deleted snackbar before going home. + // Set the close flag. + closeActivityAfterDismissingSnackbar = true; + + // Dismiss the snackbar. + bookmarksDeletedSnackbar.dismiss(); + } else { // Go home immediately. + // Update the current folder in the bookmarks activity. + if ((currentFolderDatabaseId == ALL_FOLDERS_DATABASE_ID) || (currentFolderDatabaseId == HOME_FOLDER_DATABASE_ID)) { // All folders or the the home folder are currently displayed. + // Load the home folder. + BookmarksActivity.currentFolder = ""; + } else { // A subfolder is currently displayed. + // Load the current folder. + BookmarksActivity.currentFolder = currentFolderName; + } + + // Reload the bookmarks list view when returning to the bookmarks activity. + BookmarksActivity.restartFromBookmarksDatabaseViewActivity = true; + + // Exit the bookmarks database view activity. + super.onBackPressed(); + } + } + + private void updateBookmarksListView() { + // Populate the bookmarks list view based on the spinner selection. + switch (currentFolderDatabaseId) { + // Get a cursor with all the folders. + case ALL_FOLDERS_DATABASE_ID: + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarksByDisplayOrder(); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getAllBookmarks(); + } + break; + + // Get a cursor for the home folder. + case HOME_FOLDER_DATABASE_ID: + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(""); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarks(""); + } + break; + + // Display the selected folder. + default: + // Get a cursor for the selected folder. + if (sortByDisplayOrder) { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarksByDisplayOrder(currentFolderName); + } else { + bookmarksCursor = bookmarksDatabaseHelper.getBookmarks(currentFolderName); + } + } + + // Update the cursor adapter if it isn't null, which happens when the activity is restarted. + if (bookmarksCursorAdapter != null) { + bookmarksCursorAdapter.changeCursor(bookmarksCursor); + } + } + + private void selectAllBookmarksInFolder(int folderId) { + // Get a handle for the bookmarks list view. + ListView bookmarksListView = findViewById(R.id.bookmarks_databaseview_listview); + + // Get the folder name. + String folderName = bookmarksDatabaseHelper.getFolderName(folderId); + + // Get a cursor with the contents of the folder. + Cursor folderCursor = bookmarksDatabaseHelper.getBookmarks(folderName); + + // Move to the beginning of the cursor. + folderCursor.moveToFirst(); + + while (folderCursor.getPosition() < folderCursor.getCount()) { + // Get the bookmark database ID. + int bookmarkId = folderCursor.getInt(folderCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper._ID)); + + // Move the bookmarks cursor to the first position. + bookmarksCursor.moveToFirst(); + + // Initialize the bookmark position variable. + int bookmarkPosition = -1; + + // Get the position of this bookmark in the bookmarks cursor. + while ((bookmarkPosition < 0) && (bookmarksCursor.getPosition() < bookmarksCursor.getCount())) { + // Check if the bookmark IDs match. + if (bookmarkId == bookmarksCursor.getInt(bookmarksCursor.getColumnIndexOrThrow(BookmarksDatabaseHelper._ID))) { + // Get the bookmark position. + bookmarkPosition = bookmarksCursor.getPosition(); + + // If this bookmark is a folder, select all the bookmarks inside it. + if (bookmarksDatabaseHelper.isFolder(bookmarkId)) { + selectAllBookmarksInFolder(bookmarkId); + } + + // Select the bookmark. + bookmarksListView.setItemChecked(bookmarkPosition, true); + } + + // Increment the bookmarks cursor position. + bookmarksCursor.moveToNext(); + } + + // Move to the next position. + folderCursor.moveToNext(); + } + } + + @Override + public void onSaveBookmark(DialogFragment dialogFragment, int selectedBookmarkDatabaseId, @NonNull Bitmap favoriteIconBitmap) { + // Get the dialog from the dialog fragment. + Dialog dialog = dialogFragment.getDialog(); + + // Remove the incorrect lint warning below that the dialog might be null. + assert dialog != null; + + // Get handles for the views from dialog fragment. + RadioButton currentIconRadioButton = dialog.findViewById(R.id.current_icon_radiobutton); + EditText bookmarkNameEditText = dialog.findViewById(R.id.bookmark_name_edittext); + EditText bookmarkUrlEditText = dialog.findViewById(R.id.bookmark_url_edittext); + Spinner folderSpinner = dialog.findViewById(R.id.bookmark_folder_spinner); + EditText displayOrderEditText = dialog.findViewById(R.id.bookmark_display_order_edittext); + + // Extract the bookmark information. + String bookmarkNameString = bookmarkNameEditText.getText().toString(); + String bookmarkUrlString = bookmarkUrlEditText.getText().toString(); + int folderDatabaseId = (int) folderSpinner.getSelectedItemId(); + int displayOrderInt = Integer.parseInt(displayOrderEditText.getText().toString()); + + // Instantiate the parent folder name `String`. + String parentFolderNameString; + + // Set the parent folder name. + if (folderDatabaseId == HOME_FOLDER_DATABASE_ID) { // The home folder is selected. Use `""`. + parentFolderNameString = ""; + } else { // Get the parent folder name from the database. + parentFolderNameString = bookmarksDatabaseHelper.getFolderName(folderDatabaseId); + } + + // Update the bookmark. + if (currentIconRadioButton.isChecked()) { // Update the bookmark without changing the favorite icon. + bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, parentFolderNameString, displayOrderInt); + } else { // Update the bookmark using the `WebView` favorite icon. + // Create a favorite icon byte array output stream. + ByteArrayOutputStream newFavoriteIconByteArrayOutputStream = new ByteArrayOutputStream(); + + // Convert the favorite icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG). + favoriteIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFavoriteIconByteArrayOutputStream); + + // Convert the favorite icon byte array stream to a byte array. + byte[] newFavoriteIconByteArray = newFavoriteIconByteArrayOutputStream.toByteArray(); + + // Update the bookmark and the favorite icon. + bookmarksDatabaseHelper.updateBookmark(selectedBookmarkDatabaseId, bookmarkNameString, bookmarkUrlString, parentFolderNameString, displayOrderInt, newFavoriteIconByteArray); + } + + // Update the list view. + updateBookmarksListView(); + } + + @Override + public void onSaveBookmarkFolder(DialogFragment dialogFragment, int selectedBookmarkDatabaseId, @NonNull Bitmap favoriteIconBitmap) { + // Get the dialog from the dialog fragment. + Dialog dialog = dialogFragment.getDialog(); + + // Remove the incorrect lint warning below that the dialog might be null. + assert dialog != null; + + // Get handles for the views from dialog fragment. + RadioButton currentIconRadioButton = dialog.findViewById(R.id.current_icon_radiobutton); + RadioButton defaultIconRadioButton = dialog.findViewById(R.id.default_icon_radiobutton); + ImageView defaultIconImageView = dialog.findViewById(R.id.default_icon_imageview); + EditText folderNameEditText = dialog.findViewById(R.id.folder_name_edittext); + Spinner parentFolderSpinner = dialog.findViewById(R.id.parent_folder_spinner); + EditText displayOrderEditText = dialog.findViewById(R.id.display_order_edittext); + + // Extract the folder information. + String newFolderNameString = folderNameEditText.getText().toString(); + int parentFolderDatabaseId = (int) parentFolderSpinner.getSelectedItemId(); + int displayOrderInt = Integer.parseInt(displayOrderEditText.getText().toString()); + + // Instantiate the parent folder name `String`. + String parentFolderNameString; + + // Set the parent folder name. + if (parentFolderDatabaseId == HOME_FOLDER_DATABASE_ID) { // The home folder is selected. Use `""`. + parentFolderNameString = ""; + } else { // Get the parent folder name from the database. + parentFolderNameString = bookmarksDatabaseHelper.getFolderName(parentFolderDatabaseId); + } + + // Update the folder. + if (currentIconRadioButton.isChecked()) { // Update the folder without changing the favorite icon. + bookmarksDatabaseHelper.updateFolder(selectedBookmarkDatabaseId, oldFolderNameString, newFolderNameString, parentFolderNameString, displayOrderInt); + } else { // Update the folder and the icon. + // Create the new folder icon Bitmap. + Bitmap folderIconBitmap; + + // Populate the new folder icon bitmap. + if (defaultIconRadioButton.isChecked()) { + // Get the default folder icon drawable. + Drawable folderIconDrawable = defaultIconImageView.getDrawable(); + + // Convert the folder icon drawable to a bitmap drawable. + BitmapDrawable folderIconBitmapDrawable = (BitmapDrawable) folderIconDrawable; + + // Convert the folder icon bitmap drawable to a bitmap. + folderIconBitmap = folderIconBitmapDrawable.getBitmap(); + } else { // Use the `WebView` favorite icon. + // Get a copy of the favorite icon bitmap. + folderIconBitmap = favoriteIconBitmap; + } + + // Create a folder icon byte array output stream. + ByteArrayOutputStream newFolderIconByteArrayOutputStream = new ByteArrayOutputStream(); + + // Convert the folder icon bitmap to a byte array. `0` is for lossless compression (the only option for a PNG). + folderIconBitmap.compress(Bitmap.CompressFormat.PNG, 0, newFolderIconByteArrayOutputStream); + + // Convert the folder icon byte array stream to a byte array. + byte[] newFolderIconByteArray = newFolderIconByteArrayOutputStream.toByteArray(); + + // Update the folder and the icon. + bookmarksDatabaseHelper.updateFolder(selectedBookmarkDatabaseId, oldFolderNameString, newFolderNameString, parentFolderNameString, displayOrderInt, newFolderIconByteArray); + } + + // Update the list view. + updateBookmarksListView(); + } + + @Override + public void onDestroy() { + // Close the bookmarks cursor and database. + bookmarksCursor.close(); + bookmarksDatabaseHelper.close(); + + // Run the default commands. + super.onDestroy(); } } \ No newline at end of file