import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
+import android.database.Cursor;
import android.os.Bundle;
import android.support.annotation.NonNull;
// We have to use `AppCompatDialogFragment` instead of `DialogFragment` or an error is produced on API <=22.
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.Button;
import android.widget.EditText;
import android.widget.ImageView;
-import com.stoutner.privacybrowser.activities.MainWebViewActivity;
import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.activities.MainWebViewActivity;
+import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
public class CreateBookmarkFolderDialog extends AppCompatDialogFragment {
// The public interface is used to send information back to the parent activity.
@Override
@NonNull
public Dialog onCreateDialog(Bundle savedInstanceState) {
- // Use `AlertDialog.Builder` to create the `AlertDialog`. The style formats the color of the button text.
- final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(getActivity(), R.style.LightAlertDialog);
+ // 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.create_folder);
- // The parent view is `null` because it will be assigned by the `AlertDialog`.
+
+ // Set the view. The parent view is `null` because it will be assigned by the `AlertDialog`.
dialogBuilder.setView(getActivity().getLayoutInflater().inflate(R.layout.create_bookmark_folder_dialog, null));
// Set an `onClick()` listener for the negative button.
// Show the keyboard when the `Dialog` is displayed on the screen.
alertDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
- // We need to show the `AlertDialog` before we can call `setOnKeyListener()` below.
+ // The `AlertDialog` must be shown before items in the alert dialog can be modified.
alertDialog.show();
+ // Get handles for the views in the dialog.
+ final Button createButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
+ EditText folderNameEditText = (EditText) alertDialog.findViewById(R.id.create_folder_name_edittext);
+ ImageView webPageIconImageView = (ImageView) alertDialog.findViewById(R.id.create_folder_web_page_icon);
+
+ // Initially disable the create button.
+ createButton.setEnabled(false);
+
+ // 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`.
+ final BookmarksDatabaseHelper bookmarksDatabaseHelper = new BookmarksDatabaseHelper(getContext(), null, null, 0);
+
+ // Enable the create button if the new folder name is unique.
+ folderNameEditText.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) {
+ // Convert the current text to a string.
+ String folderName = s.toString();
+
+ // Check if a folder with the name already exists.
+ Cursor folderExistsCursor = bookmarksDatabaseHelper.getFolderCursor(folderName);
+
+ // Enable the create button if the new folder name is not empty and doesn't already exist.
+ createButton.setEnabled(!folderName.isEmpty() && (folderExistsCursor.getCount() == 0));
+ }
+ });
+
// Allow the `enter` key on the keyboard to create the folder from `create_folder_name_edittext`.
- EditText createFolderNameEditText = (EditText) alertDialog.findViewById(R.id.create_folder_name_edittext);
- createFolderNameEditText.setOnKeyListener(new View.OnKeyListener() {
+ folderNameEditText.setOnKeyListener(new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
// If the event is a key-down on the `enter` key, select the `PositiveButton` `Create`.
- if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER)) {
+ if ((event.getAction() == KeyEvent.ACTION_DOWN) && (keyCode == KeyEvent.KEYCODE_ENTER) && createButton.isEnabled()) { // The enter key was pressed and the create button is enabled.
// Trigger `createBookmarkFolderListener` and return the `DialogFragment` to the parent activity.
createBookmarkFolderListener.onCreateBookmarkFolder(CreateBookmarkFolderDialog.this);
// Manually dismiss the `AlertDialog`.
alertDialog.dismiss();
// Consume the event.
return true;
- } else { // If any other key was pressed do not consume the event.
+ } else { // If any other key was pressed, or if the create button is currently disabled, do not consume the event.
return false;
}
}
});
// Display the current favorite icon.
- ImageView webPageIconImageView = (ImageView) alertDialog.findViewById(R.id.create_folder_web_page_icon);
webPageIconImageView.setImageBitmap(MainWebViewActivity.favoriteIconBitmap);
// `onCreateDialog()` requires the return of an `AlertDialog`.
projects / PrivacyBrowserAndroid.git / blobdiff