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