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      1 /*
      2  * Copyright (C) 2017 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.settingslib;
     18 
     19 import android.annotation.IntDef;
     20 import android.content.Context;
     21 import android.support.v7.preference.Preference;
     22 import android.support.v7.preference.PreferenceViewHolder;
     23 import android.util.AttributeSet;
     24 import android.view.View;
     25 import android.widget.ImageView;
     26 import android.widget.LinearLayout;
     27 
     28 import java.lang.annotation.Retention;
     29 import java.lang.annotation.RetentionPolicy;
     30 
     31 public class TwoTargetPreference extends Preference {
     32 
     33     @IntDef({ICON_SIZE_DEFAULT, ICON_SIZE_MEDIUM, ICON_SIZE_SMALL})
     34     @Retention(RetentionPolicy.SOURCE)
     35     public @interface IconSize {
     36     }
     37 
     38     public static final int ICON_SIZE_DEFAULT = 0;
     39     public static final int ICON_SIZE_MEDIUM = 1;
     40     public static final int ICON_SIZE_SMALL = 2;
     41 
     42     @IconSize
     43     private int mIconSize;
     44     private int mSmallIconSize;
     45     private int mMediumIconSize;
     46 
     47     public TwoTargetPreference(Context context, AttributeSet attrs,
     48             int defStyleAttr, int defStyleRes) {
     49         super(context, attrs, defStyleAttr, defStyleRes);
     50         init(context);
     51     }
     52 
     53     public TwoTargetPreference(Context context, AttributeSet attrs, int defStyleAttr) {
     54         super(context, attrs, defStyleAttr);
     55         init(context);
     56     }
     57 
     58     public TwoTargetPreference(Context context, AttributeSet attrs) {
     59         super(context, attrs);
     60         init(context);
     61     }
     62 
     63     public TwoTargetPreference(Context context) {
     64         super(context);
     65         init(context);
     66     }
     67 
     68     private void init(Context context) {
     69         setLayoutResource(R.layout.preference_two_target);
     70         mSmallIconSize = context.getResources().getDimensionPixelSize(
     71                 R.dimen.two_target_pref_small_icon_size);
     72         mMediumIconSize = context.getResources().getDimensionPixelSize(
     73                 R.dimen.two_target_pref_medium_icon_size);
     74         final int secondTargetResId = getSecondTargetResId();
     75         if (secondTargetResId != 0) {
     76             setWidgetLayoutResource(secondTargetResId);
     77         }
     78     }
     79 
     80     public void setIconSize(@IconSize int iconSize) {
     81         mIconSize = iconSize;
     82     }
     83 
     84     @Override
     85     public void onBindViewHolder(PreferenceViewHolder holder) {
     86         super.onBindViewHolder(holder);
     87         final ImageView icon = holder.itemView.findViewById(android.R.id.icon);
     88         switch (mIconSize) {
     89             case ICON_SIZE_SMALL:
     90                 icon.setLayoutParams(new LinearLayout.LayoutParams(mSmallIconSize, mSmallIconSize));
     91                 break;
     92             case ICON_SIZE_MEDIUM:
     93                 icon.setLayoutParams(
     94                         new LinearLayout.LayoutParams(mMediumIconSize, mMediumIconSize));
     95                 break;
     96         }
     97         final View divider = holder.findViewById(R.id.two_target_divider);
     98         final View widgetFrame = holder.findViewById(android.R.id.widget_frame);
     99         final boolean shouldHideSecondTarget = shouldHideSecondTarget();
    100         if (divider != null) {
    101             divider.setVisibility(shouldHideSecondTarget ? View.GONE : View.VISIBLE);
    102         }
    103         if (widgetFrame != null) {
    104             widgetFrame.setVisibility(shouldHideSecondTarget ? View.GONE : View.VISIBLE);
    105         }
    106     }
    107 
    108     protected boolean shouldHideSecondTarget() {
    109         return getSecondTargetResId() == 0;
    110     }
    111 
    112     protected int getSecondTargetResId() {
    113         return 0;
    114     }
    115 }
    116