1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.preference; 18 19 import java.util.Map; 20 21 import android.content.Context; 22 import android.util.AttributeSet; 23 24 /** 25 * Used to group {@link Preference} objects 26 * and provide a disabled title above the group. 27 */ 28 public class PreferenceCategory extends PreferenceGroup { 29 private static final String TAG = "PreferenceCategory"; 30 PreferenceCategory(Context context, AttributeSet attrs, int defStyle)31 public PreferenceCategory(Context context, AttributeSet attrs, int defStyle) { 32 super(context, attrs, defStyle); 33 } 34 PreferenceCategory(Context context, AttributeSet attrs)35 public PreferenceCategory(Context context, AttributeSet attrs) { 36 this(context, attrs, com.android.internal.R.attr.preferenceCategoryStyle); 37 } 38 PreferenceCategory(Context context)39 public PreferenceCategory(Context context) { 40 this(context, null); 41 } 42 43 @Override onPrepareAddPreference(Preference preference)44 protected boolean onPrepareAddPreference(Preference preference) { 45 if (preference instanceof PreferenceCategory) { 46 throw new IllegalArgumentException( 47 "Cannot add a " + TAG + " directly to a " + TAG); 48 } 49 50 return super.onPrepareAddPreference(preference); 51 } 52 53 @Override isEnabled()54 public boolean isEnabled() { 55 return false; 56 } 57 58 } 59