/*
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* Copyright (C) 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.videogo.scan.main;
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import java.util.ArrayList;
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import java.util.Collection;
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import android.content.SharedPreferences;
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import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
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import android.os.Bundle;
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import android.preference.CheckBoxPreference;
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import android.preference.PreferenceActivity;
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import android.preference.PreferenceScreen;
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public final class PreferencesActivity extends PreferenceActivity implements OnSharedPreferenceChangeListener {
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public static final String KEY_DECODE_1D = "preferences_decode_1D";
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public static final String KEY_DECODE_QR = "preferences_decode_QR";
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public static final String KEY_DECODE_DATA_MATRIX = "preferences_decode_Data_Matrix";
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public static final String KEY_CUSTOM_PRODUCT_SEARCH = "preferences_custom_product_search";
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public static final String KEY_REVERSE_IMAGE = "preferences_reverse_image";
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public static final String KEY_PLAY_BEEP = "preferences_play_beep";
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public static final String KEY_VIBRATE = "preferences_vibrate";
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public static final String KEY_COPY_TO_CLIPBOARD = "preferences_copy_to_clipboard";
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public static final String KEY_FRONT_LIGHT = "preferences_front_light";
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public static final String KEY_BULK_MODE = "preferences_bulk_mode";
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public static final String KEY_REMEMBER_DUPLICATES = "preferences_remember_duplicates";
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public static final String KEY_SUPPLEMENTAL = "preferences_supplemental";
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public static final String KEY_SEARCH_COUNTRY = "preferences_search_country";
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public static final String KEY_HELP_VERSION_SHOWN = "preferences_help_version_shown";
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private CheckBoxPreference decode1D = null;
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private CheckBoxPreference decodeQR = null;
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private CheckBoxPreference decodeDataMatrix = null;
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@Override
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protected void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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// addPreferencesFromResource(R.xml.preferences);
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PreferenceScreen preferences = getPreferenceScreen();
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preferences.getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
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decode1D = (CheckBoxPreference) preferences.findPreference(KEY_DECODE_1D);
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decodeQR = (CheckBoxPreference) preferences.findPreference(KEY_DECODE_QR);
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decodeDataMatrix = (CheckBoxPreference) preferences.findPreference(KEY_DECODE_DATA_MATRIX);
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disableLastCheckedPref();
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}
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@Override
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public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
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disableLastCheckedPref();
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}
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private void disableLastCheckedPref() {
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Collection<CheckBoxPreference> checked = new ArrayList<CheckBoxPreference>(3);
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if (decode1D.isChecked()) {
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checked.add(decode1D);
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}
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if (decodeQR.isChecked()) {
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checked.add(decodeQR);
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}
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if (decodeDataMatrix.isChecked()) {
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checked.add(decodeDataMatrix);
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}
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boolean disable = checked.size() < 2;
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CheckBoxPreference[] checkBoxPreferences = {
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decode1D, decodeQR, decodeDataMatrix};
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for (CheckBoxPreference pref : checkBoxPreferences) {
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pref.setEnabled(!(disable && checked.contains(pref)));
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}
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}
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}
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