1/*
2 * Copyright (C) 2014 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
17package android.support.v7.internal.widget;
18
19import android.annotation.TargetApi;
20import android.content.Context;
21import android.graphics.drawable.Drawable;
22import android.os.Build;
23import android.util.AttributeSet;
24import android.widget.ListPopupWindow;
25import android.widget.Spinner;
26
27import java.lang.reflect.Field;
28
29/**
30 * An tint aware {@link android.widget.Spinner}.
31 *
32 * @hide
33 */
34public class TintSpinner extends Spinner {
35
36    private static final int[] TINT_ATTRS = {
37            android.R.attr.background,
38            android.R.attr.popupBackground
39    };
40
41    public TintSpinner(Context context) {
42        this(context, null);
43    }
44
45    public TintSpinner(Context context, AttributeSet attrs) {
46        this(context, attrs, android.R.attr.spinnerStyle);
47    }
48
49    public TintSpinner(Context context, AttributeSet attrs, int defStyleAttr) {
50        super(context, attrs, defStyleAttr);
51
52        TintTypedArray a = TintTypedArray.obtainStyledAttributes(context, attrs, TINT_ATTRS,
53                defStyleAttr, 0);
54        setBackgroundDrawable(a.getDrawable(0));
55
56        if (a.hasValue(1)) {
57            final Drawable background = a.getDrawable(1);
58            if (Build.VERSION.SDK_INT >= 16) {
59                setPopupBackgroundDrawable(background);
60            } else if (Build.VERSION.SDK_INT >= 11) {
61                setPopupBackgroundDrawableV11(this, background);
62            }
63        }
64
65        a.recycle();
66    }
67
68    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
69    private static void setPopupBackgroundDrawableV11(Spinner view, Drawable background) {
70        try {
71            Field popupField = Spinner.class.getDeclaredField("mPopup");
72            popupField.setAccessible(true);
73
74            Object popup = popupField.get(view);
75
76            if (popup instanceof ListPopupWindow) {
77                ((ListPopupWindow) popup).setBackgroundDrawable(background);
78            }
79        } catch (NoSuchFieldException e) {
80            e.printStackTrace();
81        } catch (IllegalAccessException e) {
82            e.printStackTrace();
83        }
84    }
85
86}
87