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      1 /*
      2  * Copyright (C) 2015 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.settings.applications;
     18 
     19 import android.content.Context;
     20 import android.content.res.TypedArray;
     21 import android.support.annotation.VisibleForTesting;
     22 import android.support.v4.content.res.TypedArrayUtils;
     23 import android.support.v7.preference.Preference;
     24 import android.support.v7.preference.PreferenceViewHolder;
     25 import android.util.AttributeSet;
     26 import android.view.LayoutInflater;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.widget.FrameLayout;
     30 
     31 import com.android.settings.R;
     32 import com.android.settings.Utils;
     33 
     34 public class LayoutPreference extends Preference {
     35 
     36     private final View.OnClickListener mClickListener = v -> performClick(v);
     37     private boolean mAllowDividerAbove;
     38     private boolean mAllowDividerBelow;
     39 
     40     @VisibleForTesting
     41     View mRootView;
     42 
     43     public LayoutPreference(Context context, AttributeSet attrs) {
     44         super(context, attrs);
     45         init(context, attrs, 0 /* defStyleAttr */);
     46     }
     47 
     48     public LayoutPreference(Context context, AttributeSet attrs, int defStyleAttr) {
     49         super(context, attrs, defStyleAttr);
     50         init(context, attrs, defStyleAttr);
     51     }
     52 
     53     public LayoutPreference(Context context, int resource) {
     54         this(context, LayoutInflater.from(context).inflate(resource, null, false));
     55     }
     56 
     57     public LayoutPreference(Context context, View view) {
     58         super(context);
     59         setView(view);
     60     }
     61 
     62     private void init(Context context, AttributeSet attrs, int defStyleAttr) {
     63         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Preference);
     64         mAllowDividerAbove = TypedArrayUtils.getBoolean(a, R.styleable.Preference_allowDividerAbove,
     65                 R.styleable.Preference_allowDividerAbove, false);
     66         mAllowDividerBelow = TypedArrayUtils.getBoolean(a, R.styleable.Preference_allowDividerBelow,
     67                 R.styleable.Preference_allowDividerBelow, false);
     68         a.recycle();
     69 
     70         a = context.obtainStyledAttributes(
     71                 attrs, com.android.internal.R.styleable.Preference, defStyleAttr, 0);
     72         int layoutResource = a.getResourceId(com.android.internal.R.styleable.Preference_layout,
     73                 0);
     74         if (layoutResource == 0) {
     75             throw new IllegalArgumentException("LayoutPreference requires a layout to be defined");
     76         }
     77         a.recycle();
     78 
     79         // Need to create view now so that findViewById can be called immediately.
     80         final View view = LayoutInflater.from(getContext())
     81                 .inflate(layoutResource, null, false);
     82         setView(view);
     83     }
     84 
     85     private void setView(View view) {
     86         setLayoutResource(R.layout.layout_preference_frame);
     87         final ViewGroup allDetails = view.findViewById(R.id.all_details);
     88         if (allDetails != null) {
     89             Utils.forceCustomPadding(allDetails, true /* additive padding */);
     90         }
     91         mRootView = view;
     92         setShouldDisableView(false);
     93     }
     94 
     95     @Override
     96     public void onBindViewHolder(PreferenceViewHolder holder) {
     97         holder.itemView.setOnClickListener(mClickListener);
     98 
     99         final boolean selectable = isSelectable();
    100         holder.itemView.setFocusable(selectable);
    101         holder.itemView.setClickable(selectable);
    102         holder.setDividerAllowedAbove(mAllowDividerAbove);
    103         holder.setDividerAllowedBelow(mAllowDividerBelow);
    104 
    105         FrameLayout layout = (FrameLayout) holder.itemView;
    106         layout.removeAllViews();
    107         ViewGroup parent = (ViewGroup) mRootView.getParent();
    108         if (parent != null) {
    109             parent.removeView(mRootView);
    110         }
    111         layout.addView(mRootView);
    112     }
    113 
    114     public <T extends View> T findViewById(int id) {
    115         return mRootView.findViewById(id);
    116     }
    117 
    118 }