Issue 5931 - Create tests for util package

adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/InputValidatorDialogPreference.java

Index: adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/InputValidatorDialogPreference.java
===================================================================
new file mode 100644
--- /dev/null
+++ b/adblockplussbrowser/src/main/java/org/adblockplus/sbrowser/contentblocker/InputValidatorDialogPreference.java
@@ -0,0 +1,197 @@
+/*
+ * This file is part of Adblock Plus <https://adblockplus.org/>,
+ * Copyright (C) 2006-present eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus 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 Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.adblockplus.sbrowser.contentblocker;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.preference.EditTextPreference;
+import android.support.annotation.NonNull;
+import android.text.Editable;
+import android.text.InputType;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.util.Patterns;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.inputmethod.EditorInfo;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.adblockplus.adblockplussbrowser.R;
+import org.adblockplus.sbrowser.contentblocker.engine.Engine;
+import org.adblockplus.sbrowser.contentblocker.util.PreferenceUtils;
+import org.apache.commons.validator.routines.DomainValidator;
+
+public class InputValidatorDialogPreference extends EditTextPreference implements TextWatcher,
+    TextView.OnEditorActionListener
+{
+
+  public enum ValidationType
+  {
+    DOMAIN,
+    URL
+  }
+
+  private static final String TAG = InputValidatorDialogPreference.class.getSimpleName();
+  private OnInputReadyListener onInputReadyListener;
+  private AlertDialog alertDialog;
+  private ValidationType validationType;
+
+  public InputValidatorDialogPreference(Context context)
+  {
+    this(context, null);
+  }
+
+  public InputValidatorDialogPreference(Context context, AttributeSet attrs)
+  {
+    super(context, attrs);
+
+    // Setting defaults
+    this.setIcon(android.R.drawable.ic_menu_add);
+    this.setPositiveButtonText(android.R.string.ok);
+    this.setNegativeButtonText(android.R.string.cancel);
+    final EditText editText = getEditText();
+    editText.addTextChangedListener(this);
+    editText.setOnEditorActionListener(this);
+    editText.setInputType(InputType.TYPE_TEXT_VARIATION_URI);
+  }
+
+  @Override
+  protected void showDialog(Bundle state)
+  {
+    super.showDialog(state);
+
+    alertDialog = (AlertDialog) getDialog();
+    // Positive button is disabled until a valid URL is entered
+    this.setPositiveButtonEnabled(false);
+  }
+
+  @Override
+  protected void onDialogClosed(boolean positiveResult)
+  {
+    super.onDialogClosed(positiveResult);
+
+    alertDialog = null;
+    if (positiveResult && this.onInputReadyListener != null)
+    {
+      this.onInputReadyListener.onInputReady(getInput());
+    }
+  }
+
+  @Override
+  public void beforeTextChanged(CharSequence s, int start, int count, int after)
+  {
+    // Ignored
+  }
+
+  @Override
+  public void onTextChanged(CharSequence s, int start, int before, int count)
+  {
+    // Ignored
+  }
+
+  @Override
+  public void afterTextChanged(Editable s)
+  {
+    setPositiveButtonEnabled(isValidInput());
+  }
+
+  @Override
+  public boolean onEditorAction(TextView v, int actionId, KeyEvent event)
+  {
+    if (actionId == EditorInfo.IME_ACTION_DONE)
+    {
+      if (this.isValidInput())
+      {
+        alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).performClick();
+      }
+      else
+      {
+        Toast.makeText(getContext(), R.string.whitelist_website_invalid_url_error, Toast.LENGTH_SHORT).show();
+      }
+      return true;
+    }
+    return false;
+  }
+
+  @Override
+  protected void onBindView(View view)
+  {
+    super.onBindView(view);
+    PreferenceUtils.setMultilineTitle(view);
+  }
+
+  public void setValidationType(@NonNull final ValidationType validationType)
+  {
+    this.validationType = validationType;
+  }
+
+  public void setOnInputReadyListener(OnInputReadyListener listener)
+  {
+    this.onInputReadyListener = listener;
+  }
+
+  private boolean isValidDomain()
+  {
+    return DomainValidator.getInstance().isValid(getInput());
+  }
+
+  private boolean isValidUrl()
+  {
+    return Patterns.WEB_URL.matcher(getInput()).matches();
+  }
+
+  private boolean isValidInput()
+  {
+    if (validationType == null)
+    {
+      Log.i(TAG, "ValidationType was not defined and is therefore set to" +
+          " ValidationType.URL per default. Please consider to set in manually.");
+      validationType = ValidationType.URL;
+    }
+
+    switch (validationType)
+    {
+      case DOMAIN:
+        return isValidDomain();
+      default:
+        return isValidUrl();
+    }
+  }
+
+  private String getInput()
+  {
+    return getEditText().getText().toString();
+  }
+
+  private void setPositiveButtonEnabled(boolean enabled)
+  {
+    if (alertDialog != null)
+    {
+      alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(enabled);
+    }
+  }
+
+  public interface OnInputReadyListener
+  {
+    void onInputReady(String input);
+  }
+}