1/*
2 * Copyright (C) 2012 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 com.android.systemui.statusbar.phone;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.MotionEvent;
22import android.view.View;
23import android.widget.ScrollView;
24
25public class QuickSettingsScrollView extends ScrollView {
26
27    public QuickSettingsScrollView(Context context) {
28        super(context);
29    }
30
31    public QuickSettingsScrollView(Context context, AttributeSet attrs) {
32        super(context, attrs);
33    }
34
35    public QuickSettingsScrollView(Context context, AttributeSet attrs, int defStyle) {
36        super(context, attrs, defStyle);
37    }
38
39    // Y U NO PROTECTED
40    private int getScrollRange() {
41        int scrollRange = 0;
42        if (getChildCount() > 0) {
43            View child = getChildAt(0);
44            scrollRange = Math.max(0,
45                    child.getHeight() - (getHeight() - mPaddingBottom - mPaddingTop));
46        }
47        return scrollRange;
48    }
49
50    @Override
51    public boolean onTouchEvent(MotionEvent ev) {
52        final int range = getScrollRange();
53        if (range == 0) {
54            return false;
55        }
56
57        return super.onTouchEvent(ev);
58    }
59}
60