1/*
2 * Copyright (C) 2007 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.widget.listview.arrowscroll;
18
19import android.test.ActivityInstrumentationTestCase;
20import android.test.suitebuilder.annotation.MediumTest;
21import android.view.KeyEvent;
22import android.view.View;
23import android.view.ViewGroup;
24import android.widget.Button;
25import android.widget.ListView;
26import android.widget.listview.ListItemFocusablesFarApart;
27
28public class ListItemFocusablesFarApartTest extends ActivityInstrumentationTestCase<ListItemFocusablesFarApart> {
29    private ListView mListView;
30    private int mListTop;
31    private int mListBottom;
32
33    public ListItemFocusablesFarApartTest() {
34        super("com.android.frameworks.coretests", ListItemFocusablesFarApart.class);
35    }
36
37    @Override
38    protected void setUp() throws Exception {
39        super.setUp();
40        mListView = getActivity().getListView();
41        mListTop = mListView.getListPaddingTop();
42        mListBottom = mListView.getHeight() - mListView.getListPaddingBottom();
43    }
44
45    /**
46     * Get the child of a list item.
47     * @param listIndex The index of the currently visible items
48     * @param index The index of the child.
49     */
50    public View getChildOfItem(int listIndex, int index) {
51        return ((ViewGroup) mListView.getChildAt(listIndex)).getChildAt(index);
52
53    }
54
55    public int getTopOfChildOfItem(int listIndex, int index) {
56        ViewGroup listItem = (ViewGroup) mListView.getChildAt(listIndex);
57        View child = listItem.getChildAt(index);
58        return child.getTop() + listItem.getTop();
59    }
60
61    public int getBottomOfChildOfItem(int listIndex, int index) {
62        ViewGroup listItem = (ViewGroup) mListView.getChildAt(listIndex);
63        View child = listItem.getChildAt(index);
64        return child.getBottom() + listItem.getTop();
65    }
66
67    @MediumTest
68    public void testPreconditions() {
69        assertNotNull(mListView);
70        assertEquals("should only be one visible list item",
71                1, mListView.getChildCount());
72        int topOfFirstButton = getTopOfChildOfItem(0, 0);
73        int topOfSecondButton = getTopOfChildOfItem(0, 2);
74        assertTrue("second button should be more than max scroll away from first",
75                topOfSecondButton - topOfFirstButton > mListView.getMaxScrollAmount());
76    }
77
78
79    @MediumTest
80    public void testPanWhenNextFocusableTooFarDown() {
81
82        int expectedTop = mListView.getChildAt(0).getTop();
83
84        final Button topButton = (Button) getChildOfItem(0, 0);
85
86        int counter = 0;
87        while(getTopOfChildOfItem(0, 2) > mListBottom) {
88            // just to make sure we never end up with an infinite loop
89            if (counter > 5) fail("couldn't reach next button within " + counter + " downs");
90
91            if (getBottomOfChildOfItem(0, 0) < mListTop) {
92                assertFalse("after " + counter + " downs, top button not visible, should not have focus",
93                        topButton.isFocused());
94                assertFalse("after " + counter + " downs, neither top button nor botom button visible, nothng within first list " +
95                        "item should have focus", mListView.getChildAt(0).hasFocus());
96            } else {
97                assertTrue("after " + counter + " downs, top button still visible, should have focus",
98                        topButton.isFocused());
99            }
100
101            assertEquals("after " + counter + " downs, " +
102                    "should have panned by max scroll amount",
103                    expectedTop, mListView.getChildAt(0).getTop());
104
105            sendKeys(KeyEvent.KEYCODE_DPAD_DOWN);
106            expectedTop -= mListView.getMaxScrollAmount();
107            counter++;
108        }
109
110        // at this point, the second button is visible on screen.
111        // it should have focus
112        assertTrue("second button should have focus",
113                getChildOfItem(0, 2).isFocused());
114    }
115
116}
117