tests/tests/view/src/android/view/cts/View_FocusHandlingTest.java

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.view.cts;

import com.android.cts.view.R;


import android.app.Activity;
import android.graphics.Rect;
import android.test.ActivityInstrumentationTestCase2;
import android.test.UiThreadTest;
import android.view.View;

public class View_FocusHandlingTest
        extends ActivityInstrumentationTestCase2<FocusHandlingCtsActivity> {
    public View_FocusHandlingTest() {
        super("com.android.cts.view", FocusHandlingCtsActivity.class);
    }

    @UiThreadTest
    public void testFocusHandling() {
        Activity activity = getActivity();

        View v1 = activity.findViewById(R.id.view1);
        View v2 = activity.findViewById(R.id.view2);
        View v3 = activity.findViewById(R.id.view3);
        View v4 = activity.findViewById(R.id.view4);

        assertNotNull(v1);
        assertNotNull(v2);
        assertNotNull(v3);
        assertNotNull(v4);

        // test isFocusable and setFocusable
        assertFalse(v1.isFocusable());
        assertFalse(v2.isFocusable());
        assertFalse(v3.isFocusable());
        assertFalse(v4.isFocusable());

        v1.setFocusable(true);
        v2.setFocusable(true);
        v3.setFocusable(true);
        v4.setFocusable(true);

        assertTrue(v1.isFocusable());
        assertTrue(v2.isFocusable());
        assertTrue(v3.isFocusable());
        assertTrue(v4.isFocusable());

        v1.setNextFocusRightId(R.id.view2);
        v1.setNextFocusDownId(R.id.view3);

        v2.setNextFocusLeftId(R.id.view1);
        v2.setNextFocusDownId(R.id.view4);

        v3.setNextFocusRightId(R.id.view4);
        v3.setNextFocusUpId(R.id.view1);

        v4.setNextFocusLeftId(R.id.view3);
        v4.setNextFocusUpId(R.id.view2);

        // test getNextFocus***Id
        assertEquals(R.id.view2, v1.getNextFocusRightId());
        assertEquals(R.id.view3, v1.getNextFocusDownId());

        assertEquals(R.id.view1, v2.getNextFocusLeftId());
        assertEquals(R.id.view4, v2.getNextFocusDownId());

        assertEquals(R.id.view1, v3.getNextFocusUpId());
        assertEquals(R.id.view4, v3.getNextFocusRightId());

        assertEquals(R.id.view2, v4.getNextFocusUpId());
        assertEquals(R.id.view3, v4.getNextFocusLeftId());

        // test focusSearch
        assertSame(v2, v1.focusSearch(View.FOCUS_RIGHT));
        assertSame(v3, v1.focusSearch(View.FOCUS_DOWN));

        assertSame(v1, v2.focusSearch(View.FOCUS_LEFT));
        assertSame(v4, v2.focusSearch(View.FOCUS_DOWN));

        assertSame(v1, v3.focusSearch(View.FOCUS_UP));
        assertSame(v4, v3.focusSearch(View.FOCUS_RIGHT));

        assertSame(v2, v4.focusSearch(View.FOCUS_UP));
        assertSame(v3, v4.focusSearch(View.FOCUS_LEFT));

        assertTrue(v1.requestFocus());
        assertTrue(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertFalse(v4.hasFocus());

        v1.setVisibility(View.INVISIBLE);
        assertFalse(v1.hasFocus());
        assertTrue(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertFalse(v4.hasFocus());

        v2.setVisibility(View.INVISIBLE);
        assertFalse(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertTrue(v3.hasFocus());
        assertFalse(v4.hasFocus());

        v3.setVisibility(View.INVISIBLE);
        assertFalse(v1.isFocused());
        assertFalse(v2.isFocused());
        assertFalse(v3.isFocused());
        assertTrue(v4.isFocused());

        v4.setVisibility(View.INVISIBLE);
        assertFalse(v1.isFocused());
        assertFalse(v2.isFocused());
        assertFalse(v3.isFocused());
        assertFalse(v4.isFocused());

        v1.setVisibility(View.VISIBLE);
        v2.setVisibility(View.VISIBLE);
        v3.setVisibility(View.VISIBLE);
        v4.setVisibility(View.VISIBLE);
        assertTrue(v1.isFocused());
        assertFalse(v2.isFocused());
        assertFalse(v3.isFocused());
        assertFalse(v4.isFocused());

        // test scenario: a view will not actually take focus if it is not focusable
        v2.setFocusable(false);
        v3.setFocusable(false);

        assertTrue(v1.isFocusable());
        assertFalse(v2.isFocusable());
        assertFalse(v3.isFocusable());
        assertTrue(v4.isFocusable());

        v1.setVisibility(View.INVISIBLE);
        assertFalse(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertTrue(v4.hasFocus());

        // compare isFocusable and hasFocusable
        assertTrue(v1.isFocusable());
        assertFalse(v1.hasFocusable());

        // test requestFocus
        v1.setVisibility(View.VISIBLE);
        v2.setFocusable(true);
        v3.setFocusable(true);

        assertTrue(v1.hasFocusable());
        assertTrue(v2.hasFocusable());
        assertTrue(v3.hasFocusable());
        assertTrue(v4.hasFocusable());

        assertTrue(v2.requestFocus(View.FOCUS_UP));
        assertFalse(v1.hasFocus());
        assertTrue(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertFalse(v4.hasFocus());

        assertTrue(v1.requestFocus(View.FOCUS_LEFT, null));
        assertTrue(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertFalse(v4.hasFocus());

        assertTrue(v3.requestFocus());
        assertFalse(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertTrue(v3.hasFocus());
        assertFalse(v4.hasFocus());

        assertTrue(v4.requestFocusFromTouch());
        assertFalse(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertTrue(v4.hasFocus());

        // test clearFocus
        v4.clearFocus();
        assertTrue(v1.hasFocus());
        assertFalse(v2.hasFocus());
        assertFalse(v3.hasFocus());
        assertFalse(v4.hasFocus());

        assertSame(v1, v1.findFocus());
        assertNull(v2.findFocus());
        assertNull(v3.findFocus());
        assertNull(v4.findFocus());
    }
}