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      1 /*
      2  * Copyright (C) 2009 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.camera;
     18 
     19 import android.content.Context;
     20 import android.content.res.Resources;
     21 import android.content.res.TypedArray;
     22 import android.util.AttributeSet;
     23 
     24 import java.util.List;
     25 
     26 /** A {@code ListPreference} where each entry has a corresponding icon. */
     27 public class IconListPreference extends ListPreference {
     28     private int mSingleIconId;
     29     private int mIconIds[];
     30     private int mLargeIconIds[];
     31     private int mImageIds[];
     32     private boolean mUseSingleIcon;
     33 
     34     public IconListPreference(Context context, AttributeSet attrs) {
     35         super(context, attrs);
     36         TypedArray a = context.obtainStyledAttributes(
     37                 attrs, R.styleable.IconListPreference, 0, 0);
     38         Resources res = context.getResources();
     39         mSingleIconId = a.getResourceId(
     40                 R.styleable.IconListPreference_singleIcon, 0);
     41         mIconIds = getIds(res, a.getResourceId(
     42                 R.styleable.IconListPreference_icons, 0));
     43         mLargeIconIds = getIds(res, a.getResourceId(
     44                 R.styleable.IconListPreference_largeIcons, 0));
     45         mImageIds = getIds(res, a.getResourceId(
     46                 R.styleable.IconListPreference_images, 0));
     47         a.recycle();
     48     }
     49 
     50     public int getSingleIcon() {
     51         return mSingleIconId;
     52     }
     53 
     54     public int[] getIconIds() {
     55         return mIconIds;
     56     }
     57 
     58     public int[] getLargeIconIds() {
     59         return mLargeIconIds;
     60     }
     61 
     62     public int[] getImageIds() {
     63         return mImageIds;
     64     }
     65 
     66     public boolean getUseSingleIcon() {
     67         return mUseSingleIcon;
     68     }
     69 
     70     public void setIconIds(int[] iconIds) {
     71         mIconIds = iconIds;
     72     }
     73 
     74     public void setLargeIconIds(int[] largeIconIds) {
     75         mLargeIconIds = largeIconIds;
     76     }
     77 
     78     public void setUseSingleIcon(boolean useSingle) {
     79         mUseSingleIcon = useSingle;
     80     }
     81 
     82     private int[] getIds(Resources res, int iconsRes) {
     83         if (iconsRes == 0) return null;
     84         TypedArray array = res.obtainTypedArray(iconsRes);
     85         int n = array.length();
     86         int ids[] = new int[n];
     87         for (int i = 0; i < n; ++i) {
     88             ids[i] = array.getResourceId(i, 0);
     89         }
     90         array.recycle();
     91         return ids;
     92     }
     93 
     94     @Override
     95     public void filterUnsupported(List<String> supported) {
     96         CharSequence entryValues[] = getEntryValues();
     97         IntArray iconIds = new IntArray();
     98         IntArray largeIconIds = new IntArray();
     99         IntArray imageIds = new IntArray();
    100 
    101         for (int i = 0, len = entryValues.length; i < len; i++) {
    102             if (supported.indexOf(entryValues[i].toString()) >= 0) {
    103                 if (mIconIds != null) iconIds.add(mIconIds[i]);
    104                 if (mLargeIconIds != null) largeIconIds.add(mLargeIconIds[i]);
    105                 if (mImageIds != null) imageIds.add(mImageIds[i]);
    106             }
    107         }
    108         if (mIconIds != null) mIconIds = iconIds.toArray(new int[iconIds.size()]);
    109         if (mLargeIconIds != null) {
    110             mLargeIconIds = largeIconIds.toArray(new int[largeIconIds.size()]);
    111         }
    112         if (mImageIds != null) mImageIds = imageIds.toArray(new int[imageIds.size()]);
    113         super.filterUnsupported(supported);
    114     }
    115 }
    116