| /* |
| * Copyright (C) 2014 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 android.support.v4.view; |
| |
| import android.os.Build; |
| import android.view.LayoutInflater; |
| |
| /** |
| * Helper for accessing features in {@link android.view.LayoutInflater} |
| * introduced after API level 4 in a backwards compatible fashion. |
| */ |
| public final class LayoutInflaterCompat { |
| |
| interface LayoutInflaterCompatImpl { |
| public void setFactory(LayoutInflater layoutInflater, LayoutInflaterFactory factory); |
| public LayoutInflaterFactory getFactory(LayoutInflater layoutInflater); |
| } |
| |
| static class LayoutInflaterCompatImplBase implements LayoutInflaterCompatImpl { |
| @Override |
| public void setFactory(LayoutInflater layoutInflater, LayoutInflaterFactory factory) { |
| LayoutInflaterCompatBase.setFactory(layoutInflater, factory); |
| } |
| |
| @Override |
| public LayoutInflaterFactory getFactory(LayoutInflater layoutInflater) { |
| return LayoutInflaterCompatBase.getFactory(layoutInflater); |
| } |
| } |
| |
| static class LayoutInflaterCompatImplV11 extends LayoutInflaterCompatImplBase { |
| @Override |
| public void setFactory(LayoutInflater layoutInflater, LayoutInflaterFactory factory) { |
| LayoutInflaterCompatHC.setFactory(layoutInflater, factory); |
| } |
| } |
| |
| static class LayoutInflaterCompatImplV21 extends LayoutInflaterCompatImplV11 { |
| @Override |
| public void setFactory(LayoutInflater layoutInflater, LayoutInflaterFactory factory) { |
| LayoutInflaterCompatLollipop.setFactory(layoutInflater, factory); |
| } |
| } |
| |
| static final LayoutInflaterCompatImpl IMPL; |
| static { |
| final int version = Build.VERSION.SDK_INT; |
| if (version >= 21) { |
| IMPL = new LayoutInflaterCompatImplV21(); |
| } else if (version >= 11) { |
| IMPL = new LayoutInflaterCompatImplV11(); |
| } else { |
| IMPL = new LayoutInflaterCompatImplBase(); |
| } |
| } |
| |
| /* |
| * Hide the constructor. |
| */ |
| private LayoutInflaterCompat() { |
| } |
| |
| /** |
| * Attach a custom Factory interface for creating views while using |
| * this LayoutInflater. This must not be null, and can only be set once; |
| * after setting, you can not change the factory. |
| * |
| * @see LayoutInflater#setFactory(android.view.LayoutInflater.Factory) |
| */ |
| public static void setFactory(LayoutInflater inflater, LayoutInflaterFactory factory) { |
| IMPL.setFactory(inflater, factory); |
| } |
| |
| /** |
| * Return the current {@link LayoutInflaterFactory} (or null). This is |
| * called on each element name. If the factory returns a View, add that |
| * to the hierarchy. If it returns null, proceed to call onCreateView(name). |
| * |
| * @return The {@link LayoutInflaterFactory} associated with the |
| * {@link LayoutInflater}. Will be {@code null} if the inflater does not |
| * have a {@link LayoutInflaterFactory} but a raw {@link LayoutInflater.Factory}. |
| * @see LayoutInflater#getFactory() |
| */ |
| public static LayoutInflaterFactory getFactory(LayoutInflater inflater) { |
| return IMPL.getFactory(inflater); |
| } |
| |
| } |