sdk/sources/android-25/com/android/setupwizardlib/GlifPreferenceLayout.java

   1 /*
   2  * Copyright (C) 2016 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 com.android.setupwizardlib;
  18
  19 import android.content.Context;
  20 import android.os.Bundle;
  21 import android.support.v7.widget.RecyclerView;
  22 import android.util.AttributeSet;
  23 import android.view.LayoutInflater;
  24 import android.view.View;
  25 import android.view.ViewGroup;
  26
  27 /**
  28  * A layout to be used with {@code PreferenceFragment} in v14 support library. This can be specified
  29  * as the {@code android:layout} in the {@code app:preferenceFragmentStyle} in
  30  * {@code app:preferenceTheme}.
  31  *
  32  * <p />Example:
  33  * <pre>{@code
  34  * &lt;style android:name="MyActivityTheme">
  35  *     &lt;item android:name="preferenceTheme">@style/MyPreferenceTheme&lt;/item>
  36  * &lt;/style>
  37  *
  38  * &lt;style android:name="MyPreferenceTheme">
  39  *     &lt;item android:name="preferenceFragmentStyle">@style/MyPreferenceFragmentStyle&lt;/item>
  40  * &lt;/style>
  41  *
  42  * &lt;style android:name="MyPreferenceFragmentStyle">
  43  *     &lt;item android:name="android:layout">@layout/my_preference_layout&lt;/item>
  44  * &lt;/style>
  45  * }</pre>
  46  *
  47  * where {@code my_preference_layout} is a layout that contains
  48  * {@link com.android.setupwizardlib.GlifPreferenceLayout}.
  49  *
  50  * <p />Example:
  51  * <pre>{@code
  52  * &lt;com.android.setupwizardlib.GlifPreferenceLayout
  53  *     xmlns:android="http://schemas.android.com/apk/res/android"
  54  *     android:id="@id/list_container"
  55  *     android:layout_width="match_parent"
  56  *     android:layout_height="match_parent" />
  57  * }</pre>
  58  *
  59  * <p />Fragments using this layout <em>must</em> delegate {@code onCreateRecyclerView} to the
  60  * implementation in this class:
  61  * {@link #onCreateRecyclerView(android.view.LayoutInflater, android.view.ViewGroup,
  62  * android.os.Bundle)}
  63  */
  64 public class GlifPreferenceLayout extends GlifRecyclerLayout {
  65
  66     private RecyclerView mRecyclerView;
  67
  68     public GlifPreferenceLayout(Context context) {
  69         super(context);
  70     }
  71
  72     public GlifPreferenceLayout(Context context, int template, int containerId) {
  73         super(context, template, containerId);
  74     }
  75
  76     public GlifPreferenceLayout(Context context, AttributeSet attrs) {
  77         super(context, attrs);
  78     }
  79
  80     public GlifPreferenceLayout(Context context, AttributeSet attrs, int defStyleAttr) {
  81         super(context, attrs, defStyleAttr);
  82     }
  83
  84     public RecyclerView getRecyclerView() {
  85         return mRecyclerView;
  86     }
  87
  88     @Override
  89     protected ViewGroup findContainer(int containerId) {
  90         if (containerId == 0) {
  91             containerId = R.id.suw_layout_content;
  92         }
  93         return super.findContainer(containerId);
  94     }
  95
  96     /**
  97      * This method must be called in {@code PreferenceFragment#onCreateRecyclerView}.
  98      */
  99     public RecyclerView onCreateRecyclerView(LayoutInflater inflater, ViewGroup parent,
 100             Bundle savedInstanceState) {
 101         return mRecyclerView;
 102     }
 103
 104     @Override
 105     protected View onInflateTemplate(LayoutInflater inflater, int template) {
 106         if (template == 0) {
 107             template = R.layout.suw_glif_preference_template;
 108         }
 109         return super.onInflateTemplate(inflater, template);
 110     }
 111
 112     @Override
 113     protected void onTemplateInflated() {
 114         // Inflate the recycler view here, so attributes on the decoration views can be applied
 115         // immediately.
 116         final LayoutInflater inflater = LayoutInflater.from(getContext());
 117         mRecyclerView = (RecyclerView) inflater.inflate(R.layout.suw_glif_preference_recycler_view,
 118                 this, false);
 119         initRecyclerView(mRecyclerView);
 120     }
 121 }