]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDatabaseViewDialog.java
Add editing functionality to the bookmarks database view. https://redmine.stoutner...
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / dialogs / EditBookmarkDatabaseViewDialog.java
diff --git a/app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDatabaseViewDialog.java b/app/src/main/java/com/stoutner/privacybrowser/dialogs/EditBookmarkDatabaseViewDialog.java
new file mode 100644 (file)
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+/*
+ * Copyright © 2016-2017 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.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.database.MergeCursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+// `AppCompatDialogFragment` is required instead of `DialogFragment` or an error is produced on API <=22.
+import android.support.v4.widget.ResourceCursorAdapter;
+import android.support.v7.app.AppCompatDialogFragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.WindowManager;
+import android.widget.AdapterView;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import android.widget.Spinner;
+import android.widget.TextView;
+
+import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.activities.MainWebViewActivity;
+import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
+
+public class EditBookmarkDatabaseViewDialog extends AppCompatDialogFragment {
+    // Instantiate the constants.
+    public static final int HOME_FOLDER_DATABASE_ID = -1;
+
+    // Instantiate the class variables.
+    private EditBookmarkDatabaseViewListener editBookmarkDatabaseViewListener;
+    private int bookmarkDatabaseId;
+    private String currentBookmarkName;
+    private String currentUrl;
+    private int currentFolderDatabaseId;
+    private String currentDisplayOrder;
+    private RadioButton newIconRadioButton;
+    private EditText nameEditText;
+    private EditText urlEditText;
+    private Spinner folderSpinner;
+    private EditText displayOrderEditText;
+    private Button editButton;
+
+    // The public interface is used to send information back to the parent activity.
+    public interface EditBookmarkDatabaseViewListener {
+        void onSaveBookmark(AppCompatDialogFragment dialogFragment, int selectedBookmarkDatabaseId);
+    }
+
+    public void onAttach(Context context) {
+        // Run the default commands.
+        super.onAttach(context);
+
+        // Get a handle for `EditBookmarkDatabaseViewListener` from `context`.
+        try {
+            editBookmarkDatabaseViewListener = (EditBookmarkDatabaseViewListener) context;
+        } catch(ClassCastException exception) {
+            throw new ClassCastException(context.toString() + " must implement EditBookmarkDatabaseViewListener.");
+        }
+    }
+
+    // Store the database ID in the arguments bundle.
+    public static EditBookmarkDatabaseViewDialog bookmarkDatabaseId(int databaseId) {
+        // Create a bundle.
+        Bundle bundle = new Bundle();
+
+        // Store the bookmark database ID in the bundle.
+        bundle.putInt("Database ID", databaseId);
+
+        // Add the bundle to the dialog.
+        EditBookmarkDatabaseViewDialog editBookmarkDatabaseViewDialog = new EditBookmarkDatabaseViewDialog();
+        editBookmarkDatabaseViewDialog.setArguments(bundle);
+
+        // Return the new dialog.
+        return editBookmarkDatabaseViewDialog;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        // Run the default commands.
+        super.onCreate(savedInstanceState);
+
+        // Store the bookmark database ID in the class variable.
+        bookmarkDatabaseId = getArguments().getInt("Database ID");
+    }
+
+    // `@SuppressLing("InflateParams")` removes the warning about using `null` as the parent view group when inflating the `AlertDialog`.
+    @SuppressLint("InflateParams")
+    @Override
+    @NonNull
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        // Initialize the database helper.  The two `nulls` do not specify the database name or a `CursorFactory`.  The `0` specifies a database version, but that is ignored and set instead using a constant in `BookmarksDatabaseHelper`.
+        BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(getContext(), null, null, 0);
+
+        // Get a `Cursor` with the selected bookmark and move it to the first position.
+        Cursor bookmarkCursor = bookmarksDatabaseHelper.getBookmarkCursor(bookmarkDatabaseId);
+        bookmarkCursor.moveToFirst();
+
+        // Use `AlertDialog.Builder` to create the `AlertDialog`.
+        AlertDialog.Builder dialogBuilder;
+
+        // Set the style according to the theme.
+        if (MainWebViewActivity.darkTheme) {
+            dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogDark);
+        } else {
+            dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.PrivacyBrowserAlertDialogLight);
+        }
+
+        // Set the title.
+        dialogBuilder.setTitle(R.string.edit_bookmark);
+
+        // Set the view.  The parent view is `null` because it will be assigned by `AlertDialog`.
+        dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.edit_bookmark_databaseview_dialog, null));
+
+        // Set an `onClick()` listener for the negative button.
+        dialogBuilder.setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
+            // Do nothing.  The `AlertDialog` will close automatically.
+        });
+
+        // Set the `onClick()` listener fo the positive button.
+        dialogBuilder.setPositiveButton(R.string.save, (DialogInterface dialog, int which) -> {
+            // Return the `DialogFragment` to the parent activity on save.
+            editBookmarkDatabaseViewListener.onSaveBookmark(EditBookmarkDatabaseViewDialog.this, bookmarkDatabaseId);
+        });
+
+        // Create an `AlertDialog` from the `AlertDialog.Builder`.
+        final AlertDialog alertDialog = dialogBuilder.create();
+
+        // Remove the warning below that `setSoftInputMode` might produce `java.lang.NullPointerException`.
+        assert alertDialog.getWindow() != null;
+
+        // Set the keyboard to be hidden when the `AlertDialog` is first shown.  If this is not set, the `AlertDialog` will not shrink when the keyboard is displayed.
+        alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
+
+        // The `AlertDialog` must be shown before items in the layout can be modified.
+        alertDialog.show();
+
+        // Get handles for the layout items.
+        TextView databaseIdTextView = alertDialog.findViewById(R.id.edit_bookmark_database_id_textview);
+        RadioGroup iconRadioGroup = alertDialog.findViewById(R.id.edit_bookmark_icon_radiogroup);
+        ImageView currentIconImageView = alertDialog.findViewById(R.id.edit_bookmark_current_icon);
+        ImageView newFavoriteIconImageView = alertDialog.findViewById(R.id.edit_bookmark_webpage_favorite_icon);
+        newIconRadioButton = alertDialog.findViewById(R.id.edit_bookmark_webpage_favorite_icon_radiobutton);
+        nameEditText = alertDialog.findViewById(R.id.edit_bookmark_name_edittext);
+        urlEditText = alertDialog.findViewById(R.id.edit_bookmark_url_edittext);
+        folderSpinner = alertDialog.findViewById(R.id.edit_bookmark_folder_spinner);
+        displayOrderEditText = alertDialog.findViewById(R.id.edit_bookmark_display_order_edittext);
+        editButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
+
+        // Store the current bookmark values.
+        currentBookmarkName = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME));
+        currentUrl = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_URL));
+        currentDisplayOrder = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER));
+
+        // Set the database ID.
+        databaseIdTextView.setText(String.valueOf(bookmarkCursor.getInt(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper._ID))));
+
+        // Get the current favorite icon byte array from the `Cursor`.
+        byte[] currentIconByteArray = bookmarkCursor.getBlob(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.FAVORITE_ICON));
+
+        // Convert the byte array to a `Bitmap` beginning at the first byte and ending at the last.
+        Bitmap currentIconBitmap = BitmapFactory.decodeByteArray(currentIconByteArray, 0, currentIconByteArray.length);
+
+        // Display `currentIconBitmap` in `edit_bookmark_current_icon`.
+        currentIconImageView.setImageBitmap(currentIconBitmap);
+
+        // Get a `Bitmap` of the favorite icon from `MainWebViewActivity` and display it in `edit_bookmark_web_page_favorite_icon`.
+        newFavoriteIconImageView.setImageBitmap(MainWebViewActivity.favoriteIconBitmap);
+
+        // Populate the bookmark name and URL `EditTexts`.
+        nameEditText.setText(currentBookmarkName);
+        urlEditText.setText(currentUrl);
+
+        // Setup a `MatrixCursor` "Home Folder".
+        String[] matrixCursorColumnNames = {BookmarksDatabaseHelper._ID, BookmarksDatabaseHelper.BOOKMARK_NAME};
+        MatrixCursor matrixCursor = new MatrixCursor(matrixCursorColumnNames);
+        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.getAllFoldersCursor();
+
+        // Combine `matrixCursor` and `foldersCursor`.
+        MergeCursor foldersMergeCursor = new MergeCursor(new Cursor[]{matrixCursor, foldersCursor});
+
+        // Create a `ResourceCursorAdapter` for the `Spinner`.  `0` specifies no flags.;
+        ResourceCursorAdapter foldersCursorAdapter = new ResourceCursorAdapter(getContext(), R.layout.edit_bookmark_databaseview_spinner_item, foldersMergeCursor, 0) {
+            @Override
+            public void bindView(View view, Context context, Cursor cursor) {
+                // Get a handle for the `Spinner` item `TextView`.
+                TextView spinnerItemTextView = view.findViewById(R.id.spinner_item_textview);
+
+                // Set the `TextView` to display the folder name.
+                spinnerItemTextView.setText(cursor.getString(cursor.getColumnIndex(BookmarksDatabaseHelper.BOOKMARK_NAME)));
+            }
+        };
+
+        // Set the `ResourceCursorAdapter` drop drown view resource.
+        foldersCursorAdapter.setDropDownViewResource(R.layout.edit_bookmark_databaseview_spinner_dropdown_item);
+
+        // Set the adapter for the folder `Spinner`.
+        folderSpinner.setAdapter(foldersCursorAdapter);
+
+        // Get the parent folder name.
+        String parentFolder = bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER));
+
+        // Select the current folder in the `Spinner` if the bookmark isn't in the "Home Folder".
+        if (!parentFolder.equals("")) {
+            // Get the database ID of the parent folder.
+            int folderDatabaseId = bookmarksDatabaseHelper.getFolderDatabaseId(bookmarkCursor.getString(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.PARENT_FOLDER)));
+
+            // Initialize `parentFolderPosition` and the iteration variable.
+            int parentFolderPosition = 0;
+            int i = 0;
+
+            // Find the parent folder position in folders `ResourceCursorAdapter`.
+            do {
+                if (foldersCursorAdapter.getItemId(i) == folderDatabaseId) {
+                    // Store the current position for the parent folder.
+                    parentFolderPosition = i;
+                } else {
+                    // Try the next entry.
+                    i++;
+                }
+                // Stop when the parent folder position is found or all the items in the `ResourceCursorAdapter` have been checked.
+            } while ((parentFolderPosition == 0) && (i < foldersCursorAdapter.getCount()));
+
+            // Select the parent folder in the `Spinner`.
+            folderSpinner.setSelection(parentFolderPosition);
+        }
+
+        // Store the current folder database ID.
+        currentFolderDatabaseId = (int) folderSpinner.getSelectedItemId();
+
+        // Populate the display order `EditText`.
+        displayOrderEditText.setText(String.valueOf(bookmarkCursor.getInt(bookmarkCursor.getColumnIndex(BookmarksDatabaseHelper.DISPLAY_ORDER))));
+
+        // Initially disable the edit button.
+        editButton.setEnabled(false);
+
+        // Update the edit button if the icon selection changes.
+        iconRadioGroup.setOnCheckedChangeListener((group, checkedId) -> {
+            // Update the edit button.
+            updateEditButton();
+        });
+
+        // Update the edit button if the bookmark name changes.
+        nameEditText.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) {
+                // Update the edit button.
+                updateEditButton();
+            }
+        });
+
+        // Update the edit button if the URL changes.
+        urlEditText.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) {
+                // Update the edit button.
+                updateEditButton();
+            }
+        });
+
+        // Update the edit button if the folder changes.
+        folderSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                // Update the edit button.
+                updateEditButton();
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+
+            }
+        });
+
+        // Update the edit button if the display order changes.
+        displayOrderEditText.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) {
+                // Update the edit button.
+                updateEditButton();
+            }
+        });
+
+        // Allow the `enter` key on the keyboard to save the bookmark from the bookmark name `EditText`.
+        nameEditText.setOnKeyListener((View v, int keyCode, KeyEvent event) -> {
+            // Save the bookmark if the event is a key-down on the "enter" button.
+            if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && editButton.isEnabled()) {  // The enter key was pressed and the edit button is enabled.
+                // Trigger the `Listener` and return the `DialogFragment` to the parent activity.
+                editBookmarkDatabaseViewListener.onSaveBookmark(EditBookmarkDatabaseViewDialog.this, bookmarkDatabaseId);
+
+                // Manually dismiss `alertDialog`.
+                alertDialog.dismiss();
+
+                // Consume the event.
+                return true;
+            } else {  // If any other key was pressed, or if the edit button is currently disabled, do not consume the event.
+                return false;
+            }
+        });
+
+        // Allow the "enter" key on the keyboard to save the bookmark from the URL `EditText`.
+        urlEditText.setOnKeyListener((View v, int keyCode, KeyEvent event) -> {
+            // Save the bookmark if the event is a key-down on the "enter" button.
+            if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && editButton.isEnabled()) {  // The enter key was pressed and the edit button is enabled.
+                // Trigger the `Listener` and return the `DialogFragment` to the parent activity.
+                editBookmarkDatabaseViewListener.onSaveBookmark(EditBookmarkDatabaseViewDialog.this, bookmarkDatabaseId);
+
+                // Manually dismiss the `AlertDialog`.
+                alertDialog.dismiss();
+
+                // Consume the event.
+                return true;
+            } else { // If any other key was pressed, or if the edit button is currently disabled, do not consume the event.
+                return false;
+            }
+        });
+
+        // Allow the "enter" key on the keyboard to save the bookmark from the display order `EditText`.
+        displayOrderEditText.setOnKeyListener((View v, int keyCode, KeyEvent event) -> {
+            // Save the bookmark if the event is a key-down on the "enter" button.
+            if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && editButton.isEnabled()) {  // The enter key was pressed and the edit button is enabled.
+                // Trigger the `Listener` and return the `DialogFragment` to the parent activity.
+                editBookmarkDatabaseViewListener.onSaveBookmark(EditBookmarkDatabaseViewDialog.this, bookmarkDatabaseId);
+
+                // Manually dismiss the `AlertDialog`.
+                alertDialog.dismiss();
+
+                // Consume the event.
+                return true;
+            } else { // If any other key was pressed, or if the edit button is currently disabled, do not consume the event.
+                return false;
+            }
+        });
+
+        // `onCreateDialog` requires the return of an `AlertDialog`.
+        return alertDialog;
+    }
+
+    private void updateEditButton() {
+        // Get the values from the dialog.
+        String newName = nameEditText.getText().toString();
+        String newUrl = urlEditText.getText().toString();
+        int newFolderDatabaseId = (int) folderSpinner.getSelectedItemId();
+        String newDisplayOrder = displayOrderEditText.getText().toString();
+
+        // Has the favorite icon changed?
+        boolean iconChanged = newIconRadioButton.isChecked();
+
+        // Has the name changed?
+        boolean nameChanged = !newName.equals(currentBookmarkName);
+
+        // Has the URL changed?
+        boolean urlChanged = !newUrl.equals(currentUrl);
+
+        // Has the folder changed?
+        boolean folderChanged = newFolderDatabaseId != currentFolderDatabaseId;
+
+        // Has the display order changed?
+        boolean displayOrderChanged = !newDisplayOrder.equals(currentDisplayOrder);
+
+        // Is the display order empty?
+        boolean displayOrderNotEmpty = !newDisplayOrder.isEmpty();
+
+        // Update the enabled status of the edit button.
+        editButton.setEnabled((iconChanged || nameChanged || urlChanged || folderChanged || displayOrderChanged) && displayOrderNotEmpty);
+    }
+}
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