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.content.res.TypedArray;
22import android.graphics.drawable.Drawable;
23import android.os.Build;
24import android.support.v7.appcompat.R;
25import android.util.AttributeSet;
26import android.view.View;
27import android.widget.PopupWindow;
28
29/**
30 * @hide
31 */
32public class AppCompatPopupWindow extends PopupWindow {
33
34    private final boolean mOverlapAnchor;
35
36    public AppCompatPopupWindow(Context context, AttributeSet attrs, int defStyleAttr) {
37        super(context, attrs, defStyleAttr);
38
39        TintTypedArray a = TintTypedArray.obtainStyledAttributes(context, attrs,
40                R.styleable.PopupWindow, defStyleAttr, 0);
41        mOverlapAnchor = a.getBoolean(R.styleable.PopupWindow_overlapAnchor, false);
42        // We re-set this for tinting purposes
43        setBackgroundDrawable(a.getDrawable(R.styleable.PopupWindow_android_popupBackground));
44        a.recycle();
45    }
46
47    @Override
48    public void showAsDropDown(View anchor, int xoff, int yoff) {
49        if (Build.VERSION.SDK_INT < 21 && mOverlapAnchor) {
50            // If we're pre-L, emulate overlapAnchor by modifying the yOff
51            yoff -= anchor.getHeight();
52        }
53        super.showAsDropDown(anchor, xoff, yoff);
54    }
55
56    @TargetApi(Build.VERSION_CODES.KITKAT)
57    @Override
58    public void showAsDropDown(View anchor, int xoff, int yoff, int gravity) {
59        if (Build.VERSION.SDK_INT < 21 && mOverlapAnchor) {
60            // If we're pre-L, emulate overlapAnchor by modifying the yOff
61            yoff -= anchor.getHeight();
62        }
63        super.showAsDropDown(anchor, xoff, yoff, gravity);
64    }
65
66    @Override
67    public void update(View anchor, int xoff, int yoff, int width, int height) {
68        if (Build.VERSION.SDK_INT < 21 && mOverlapAnchor) {
69            // If we're pre-L, emulate overlapAnchor by modifying the yOff
70            yoff -= anchor.getHeight();
71        }
72        super.update(anchor, xoff, yoff, width, height);
73    }
74}
75