19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.preference; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.Collections; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.List; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.preference.Preference.OnPreferenceChangeInternalListener; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.Adapter; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.BaseAdapter; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.widget.ListView; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * An adapter that returns the {@link Preference} contained in this group. 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * In most cases, this adapter should be the base class for any custom 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * adapters from {@link Preference#getAdapter()}. 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This adapter obeys the 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Preference}'s adapter rule (the 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Adapter#getView(int, View, ViewGroup)} should be used instead of 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Preference#getView(ViewGroup)} if a {@link Preference} has an 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * adapter via {@link Preference#getAdapter()}). 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This adapter also propagates data change/invalidated notifications upward. 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This adapter does not include this {@link PreferenceGroup} in the returned 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * adapter, use {@link PreferenceCategoryAdapter} instead. 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see PreferenceCategoryAdapter 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass PreferenceGroupAdapter extends BaseAdapter implements OnPreferenceChangeInternalListener { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String TAG = "PreferenceGroupAdapter"; 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The group that we are providing data from. 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private PreferenceGroup mPreferenceGroup; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Maps a position into this adapter -> {@link Preference}. These 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Preference}s don't have to be direct children of this 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link PreferenceGroup}, they can be grand children or younger) 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private List<Preference> mPreferenceList; 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List of unique Preference and its subclasses' names. This is used to find 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * out how many types of views this adapter can return. Once the count is 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returned, this cannot be modified (since the ListView only checks the 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * count once--when the adapter is being set). We will not recycle views for 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Preference subclasses seen after the count has been returned. 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 72a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private ArrayList<PreferenceLayout> mPreferenceLayouts; 73a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 74a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private PreferenceLayout mTempPreferenceLayout = new PreferenceLayout(); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Blocks the mPreferenceClassNames from being changed anymore. 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mHasReturnedViewTypeCount = false; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private volatile boolean mIsSyncing = false; 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Handler mHandler = new Handler(); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Runnable mSyncRunnable = new Runnable() { 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project syncMyPreferences(); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 91a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private static class PreferenceLayout implements Comparable<PreferenceLayout> { 92a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private int resId; 93a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private int widgetResId; 94a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private String name; 95a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 96a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani public int compareTo(PreferenceLayout other) { 97a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani int compareNames = name.compareTo(other.name); 98a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani if (compareNames == 0) { 99a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani if (resId == other.resId) { 100a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani if (widgetResId == other.widgetResId) { 101a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return 0; 102a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } else { 103a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return widgetResId - other.widgetResId; 104a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 105a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } else { 106a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return resId - other.resId; 107a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 108a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } else { 109a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return compareNames; 110a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 111a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 112a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 113a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public PreferenceGroupAdapter(PreferenceGroup preferenceGroup) { 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPreferenceGroup = preferenceGroup; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If this group gets or loses any children, let us know 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPreferenceGroup.setOnPreferenceChangeInternalListener(this); 118a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPreferenceList = new ArrayList<Preference>(); 120a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani mPreferenceLayouts = new ArrayList<PreferenceLayout>(); 121a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project syncMyPreferences(); 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void syncMyPreferences() { 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized(this) { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIsSyncing) { 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 130a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsSyncing = true; 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project List<Preference> newPreferenceList = new ArrayList<Preference>(mPreferenceList.size()); 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project flattenPreferenceGroup(newPreferenceList, mPreferenceGroup); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPreferenceList = newPreferenceList; 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notifyDataSetChanged(); 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized(this) { 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsSyncing = false; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notifyAll(); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void flattenPreferenceGroup(List<Preference> preferences, PreferenceGroup group) { 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: shouldn't always? 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project group.sortPreferences(); 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int groupSize = group.getPreferenceCount(); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < groupSize; i++) { 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Preference preference = group.getPreference(i); 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project preferences.add(preference); 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 156a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani if (!mHasReturnedViewTypeCount && !preference.hasSpecifiedLayout()) { 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addPreferenceClassName(preference); 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (preference instanceof PreferenceGroup) { 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final PreferenceGroup preferenceAsGroup = (PreferenceGroup) preference; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (preferenceAsGroup.isOnSameScreenAsChildren()) { 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project flattenPreferenceGroup(preferences, preferenceAsGroup); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project preference.setOnPreferenceChangeInternalListener(this); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 171a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani /** 172a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani * Creates a string that includes the preference name, layout id and widget layout id. 173a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani * If a particular preference type uses 2 different resources, they will be treated as 174a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani * different view types. 175a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani */ 176a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani private PreferenceLayout createPreferenceLayout(Preference preference, PreferenceLayout in) { 177a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani PreferenceLayout pl = in != null? in : new PreferenceLayout(); 178a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani pl.name = preference.getClass().getName(); 179a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani pl.resId = preference.getLayoutResource(); 180a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani pl.widgetResId = preference.getWidgetLayoutResource(); 181a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return pl; 182a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani } 183a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void addPreferenceClassName(Preference preference) { 185a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani final PreferenceLayout pl = createPreferenceLayout(preference, null); 186a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani int insertPos = Collections.binarySearch(mPreferenceLayouts, pl); 187a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Only insert if it doesn't exist (when it is negative). 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (insertPos < 0) { 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Convert to insert index 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project insertPos = insertPos * -1 - 1; 192a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani mPreferenceLayouts.add(insertPos, pl); 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCount() { 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mPreferenceList.size(); 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Preference getItem(int position) { 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0 || position >= getCount()) return null; 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mPreferenceList.get(position); 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public long getItemId(int position) { 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0 || position >= getCount()) return ListView.INVALID_ROW_ID; 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return this.getItem(position).getId(); 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View getView(int position, View convertView, ViewGroup parent) { 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Preference preference = this.getItem(position); 212a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani // Build a PreferenceLayout to compare with known ones that are cacheable. 213a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani mTempPreferenceLayout = createPreferenceLayout(preference, mTempPreferenceLayout); 214a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 215a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani // If it's not one of the cached ones, set the convertView to null so that 216a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani // the layout gets re-created by the Preference. 217a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani if (Collections.binarySearch(mPreferenceLayouts, mTempPreferenceLayout) < 0) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project convertView = null; 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 220a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return preference.getView(convertView, parent); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isEnabled(int position) { 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0 || position >= getCount()) return true; 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return this.getItem(position).isSelectable(); 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean areAllItemsEnabled() { 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // There should always be a preference group, and these groups are always 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // disabled 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onPreferenceChange(Preference preference) { 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project notifyDataSetChanged(); 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onPreferenceHierarchyChange(Preference preference) { 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.removeCallbacks(mSyncRunnable); 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.post(mSyncRunnable); 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean hasStableIds() { 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getItemViewType(int position) { 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mHasReturnedViewTypeCount) { 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHasReturnedViewTypeCount = true; 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Preference preference = this.getItem(position); 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (preference.hasSpecifiedLayout()) { 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return IGNORE_ITEM_VIEW_TYPE; 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 262a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani mTempPreferenceLayout = createPreferenceLayout(preference, mTempPreferenceLayout); 263a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani 264a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani int viewType = Collections.binarySearch(mPreferenceLayouts, mTempPreferenceLayout); 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewType < 0) { 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is a class that was seen after we returned the count, so 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't recycle it. 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return IGNORE_ITEM_VIEW_TYPE; 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return viewType; 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getViewTypeCount() { 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mHasReturnedViewTypeCount) { 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHasReturnedViewTypeCount = true; 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 280a98129b9110371aa036d8fcf23fff709595b16ffAmith Yamasani return Math.max(1, mPreferenceLayouts.size()); 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 284