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      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 
     17 package android.widget.listview.arrowscroll;
     18 
     19 import android.test.ActivityInstrumentationTestCase;
     20 import android.test.suitebuilder.annotation.MediumTest;
     21 import android.view.KeyEvent;
     22 import android.view.View;
     23 import android.view.ViewGroup;
     24 import android.widget.Button;
     25 import android.widget.ListView;
     26 import android.widget.listview.ListItemFocusablesFarApart;
     27 
     28 public 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