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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.widget;
import android.app.AlertDialog;
import android.content.Context;
import androidx.annotation.VisibleForTesting;
import androidx.preference.PreferenceViewHolder;
import android.text.Editable;
import android.text.InputType;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import com.android.settingslib.CustomEditTextPreference;
/**
* {@code EditTextPreference} that supports input validation.
*/
public class ValidatedEditTextPreference extends CustomEditTextPreference {
public interface Validator {
boolean isTextValid(String value);
}
private final EditTextWatcher mTextWatcher = new EditTextWatcher();
private Validator mValidator;
private boolean mIsPassword;
private boolean mIsSummaryPassword;
public ValidatedEditTextPreference(Context context, AttributeSet attrs,
int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
}
public ValidatedEditTextPreference(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public ValidatedEditTextPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ValidatedEditTextPreference(Context context) {
super(context);
}
@Override
protected void onBindDialogView(View view) {
super.onBindDialogView(view);
final EditText editText = view.findViewById(android.R.id.edit);
if (editText != null && !TextUtils.isEmpty(editText.getText())) {
editText.setSelection(editText.getText().length());
}
if (mValidator != null && editText != null) {
editText.removeTextChangedListener(mTextWatcher);
if (mIsPassword) {
editText.setInputType(
InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
editText.setMaxLines(1);
}
editText.addTextChangedListener(mTextWatcher);
}
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
final TextView textView = (TextView) holder.findViewById(android.R.id.summary);
if (textView == null) {
return;
}
if (mIsSummaryPassword) {
textView.setInputType(
InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
} else {
textView.setInputType(InputType.TYPE_CLASS_TEXT);
}
}
public void setIsPassword(boolean isPassword) {
mIsPassword = isPassword;
}
public void setIsSummaryPassword(boolean isPassword) {
mIsSummaryPassword = isPassword;
}
@VisibleForTesting(otherwise = VisibleForTesting.NONE)
public boolean isPassword() {
return mIsPassword;
}
public void setValidator(Validator validator) {
mValidator = validator;
}
private class EditTextWatcher implements TextWatcher {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
final EditText editText = getEditText();
if (mValidator != null && editText != null) {
final AlertDialog dialog = (AlertDialog) getDialog();
final boolean valid = mValidator.isTextValid(editText.getText().toString());
dialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(valid);
}
}
}
}
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