Example usage for android.view View setAccessibilityDelegate

Introduction

In this page you can find the example usage for android.view View setAccessibilityDelegate.

Prototype

public void setAccessibilityDelegate(@Nullable AccessibilityDelegate delegate) 

Source Link

Document

Sets a delegate for implementing accessibility support via composition (as opposed to inheritance).

Usage

From source file:Main.java

public static void updateAccessibilityComponentType(View view, String componentType) {
    if (componentType == null) {
        view.setAccessibilityDelegate(null);
        return;/*from w w w. j a v  a 2s . c  o m*/
    }
    switch (componentType) {
    case BUTTON:
        view.setAccessibilityDelegate(BUTTON_DELEGATE);
        break;
    case RADIOBUTTON_CHECKED:
        view.setAccessibilityDelegate(RADIOBUTTON_CHECKED_DELEGATE);
        break;
    case RADIOBUTTON_UNCHECKED:
        view.setAccessibilityDelegate(RADIOBUTTON_UNCHECKED_DELEGATE);
        break;
    default:
        view.setAccessibilityDelegate(null);
        break;
    }
}

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From source file:com.facebook.react.uimanager.AccessibilityRoleUtil.java

/**
 * Method for setting accessibilityRole on view properties.
 *///from  w w w.j a  va  2  s  .co  m
public static void updateAccessibilityRole(View view, String role) {
    if (role == null) {
        view.setAccessibilityDelegate(null);
    }
    try {
        setRole(view, AccessibilityRole.valueOf(role.toUpperCase()));
    } catch (NullPointerException e) {
        view.setAccessibilityDelegate(null);
    } catch (IllegalArgumentException e) {
        view.setAccessibilityDelegate(null);
    }
}

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From source file:com.android.talkback.menurules.RuleCustomActionTest.java

@MediumTest
public void testNodeWithCustomActions_shouldHaveOwnActions() throws Throwable {
    if (Build.VERSION.SDK_INT < RuleCustomAction.MIN_API_LEVEL) {
        return;/*from w  w w  . ja  v  a 2s  .  c  o  m*/
    }

    setContentView(R.layout.nested_views);

    View button = getActivity().findViewById(R.id.nested_button_1);
    button.setAccessibilityDelegate(new AccessibilityDelegate1());

    mTalkBack.getCursorController().setCursor(getNodeForId(R.id.nested_button_1));
    waitForAccessibilityIdleSync();

    AccessibilityNodeInfoCompat buttonInfo = getNodeForId(R.id.nested_button_1);
    waitForAccessibilityIdleSync();

    RuleCustomAction customAction = new RuleCustomAction();

    ListMenu listMenu = new ListMenu(mTalkBack);
    List<ContextMenuItem> items = customAction.getMenuItemsForNode(mTalkBack, listMenu.getMenuItemBuilder(),
            buttonInfo);

    assertEquals(2, items.size());
    assertHasItemWithTitle(items, "CA1");
    assertHasItemWithTitle(items, "CA2");
}

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From source file:com.android.talkback.menurules.RuleCustomActionTest.java

@MediumTest
public void testNodeWithoutCustomActions_shouldInheritParentActions() throws Throwable {
    if (Build.VERSION.SDK_INT < RuleCustomAction.MIN_API_LEVEL) {
        return;/*from   ww w . j a va 2  s . c  om*/
    }

    setContentView(R.layout.nested_views);

    View parentFrame = getActivity().findViewById(R.id.parent_frame);
    parentFrame.setAccessibilityDelegate(new AccessibilityDelegate1());

    mTalkBack.getCursorController().setCursor(getNodeForId(R.id.nested_button_1));
    waitForAccessibilityIdleSync();

    AccessibilityNodeInfoCompat buttonInfo = getNodeForId(R.id.nested_button_1);
    waitForAccessibilityIdleSync();

    RuleCustomAction customAction = new RuleCustomAction();

    ListMenu listMenu = new ListMenu(mTalkBack);
    List<ContextMenuItem> items = customAction.getMenuItemsForNode(mTalkBack, listMenu.getMenuItemBuilder(),
            buttonInfo);

    assertEquals(2, items.size());
    assertHasItemWithTitle(items, "CA1");
    assertHasItemWithTitle(items, "CA2");
}

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From source file:com.android.talkback.menurules.RuleCustomActionTest.java

@MediumTest
public void testNodeWithCustomActions_shouldNotInheritParentActions() throws Throwable {
    if (Build.VERSION.SDK_INT < RuleCustomAction.MIN_API_LEVEL) {
        return;//www .  j  a  va 2s .  c  o m
    }

    setContentView(R.layout.nested_views);

    View parentFrame = getActivity().findViewById(R.id.parent_frame);
    parentFrame.setAccessibilityDelegate(new AccessibilityDelegate1());
    View button = getActivity().findViewById(R.id.nested_button_1);
    button.setAccessibilityDelegate(new AccessibilityDelegate2());

    mTalkBack.getCursorController().setCursor(getNodeForId(R.id.nested_button_1));
    waitForAccessibilityIdleSync();

    AccessibilityNodeInfoCompat buttonInfo = getNodeForId(R.id.nested_button_1);
    waitForAccessibilityIdleSync();

    RuleCustomAction customAction = new RuleCustomAction();

    ListMenu listMenu = new ListMenu(mTalkBack);
    List<ContextMenuItem> items = customAction.getMenuItemsForNode(mTalkBack, listMenu.getMenuItemBuilder(),
            buttonInfo);

    assertEquals(2, items.size());
    assertHasItemWithTitle(items, "CA3");
    assertHasItemWithTitle(items, "CA4");
}

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From source file:com.android.talkback.menurules.RuleCustomActionTest.java

@MediumTest
public void testNodeWithoutCustomActions_shouldInheritHierarchyActions() throws Throwable {
    if (Build.VERSION.SDK_INT < RuleCustomAction.MIN_API_LEVEL) {
        return;/*from  w w w . jav  a 2  s . c  om*/
    }

    setContentView(R.layout.nested_views);

    View parentFrame = getActivity().findViewById(R.id.parent_frame);
    parentFrame.setAccessibilityDelegate(new AccessibilityDelegate1());
    View nestedFrame = getActivity().findViewById(R.id.nested_frame);
    nestedFrame.setAccessibilityDelegate(new AccessibilityDelegate2());

    mTalkBack.getCursorController().setCursor(getNodeForId(R.id.nested_button_2));
    waitForAccessibilityIdleSync();

    AccessibilityNodeInfoCompat buttonInfo = getNodeForId(R.id.nested_button_2);
    waitForAccessibilityIdleSync();

    RuleCustomAction customAction = new RuleCustomAction();

    ListMenu listMenu = new ListMenu(mTalkBack);
    List<ContextMenuItem> items = customAction.getMenuItemsForNode(mTalkBack, listMenu.getMenuItemBuilder(),
            buttonInfo);

    assertEquals(2, items.size());
    assertHasItemWithTitle(items, "CA3");
    assertHasItemWithTitle(items, "CA4");
}

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From source file:com.android.utils.traversal.OrderedTraversalControllerTest.java

@MediumTest
public void testWebDescendantsExcludedWhenNotRequested() {
    View view2 = getActivity().findViewById(R.id.node2);
    view2.setAccessibilityDelegate(new View.AccessibilityDelegate() {
        @Override//from   w w  w.j a va2  s . co m
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT);
        }
    });

    initController(false);
    assertForwardOrder(mNode1, mNode2, mNode5, mNode6, mNode7);
    assertBackwardOrder(mNode7, mNode6, mNode5, mNode2, mNode1);
}

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From source file:com.android.utils.traversal.OrderedTraversalControllerTest.java

@MediumTest
public void testWebDescendantsIncludedWhenRequested() {
    View view2 = getActivity().findViewById(R.id.node2);
    view2.setAccessibilityDelegate(new View.AccessibilityDelegate() {
        @Override//  w w w.j a v a  2s.  c  o m
        public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
            super.onInitializeAccessibilityNodeInfo(host, info);
            info.addAction(AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT);
        }
    });

    initController(true);
    assertForwardOrder(mNode1, mNode2, mNode3, mNode4, mNode5, mNode6, mNode7);
    assertBackwardOrder(mNode7, mNode6, mNode5, mNode4, mNode3, mNode2, mNode1);
}

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From source file:com.android.talkback.eventprocessor.AccessibilityEventProcessorTest.java

private void sendEvent(final int event, final CharSequence className) {
    final View outerView = getViewForId(R.id.outer_view);
    getInstrumentation().runOnMainSync(new Runnable() {
        @Override/*from   w ww.ja  v  a  2  s.c o m*/
        public void run() {
            outerView.setAccessibilityDelegate(new AccessibilityDelegate() {
                @Override
                public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
                    super.onInitializeAccessibilityEvent(host, event);
                    event.setClassName(className);
                }
            });
            outerView.sendAccessibilityEvent(event);
        }
    });
    getInstrumentation().waitForIdleSync();
    waitForAccessibilityIdleSync();
}

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From source file:com.android.talkback.controller.CursorControllerAppTest.java

@MediumTest
public void testNextPrevious_web() {
    setContentView(R.layout.cursor_web_test);

    WebAccessibilityDelegate delegate1 = new WebAccessibilityDelegate(true /* next */, false /* previous */);
    View webElement1 = getViewForId(R.id.web_element_1);
    webElement1.setAccessibilityDelegate(delegate1);
    AccessibilityNodeInfoCompat webNode1 = getNodeForView(webElement1);

    WebAccessibilityDelegate delegate2 = new WebAccessibilityDelegate(false /* next */, true /* previous */);
    View webElement2 = getViewForId(R.id.web_element_2);
    webElement2.setAccessibilityDelegate(delegate2);
    AccessibilityNodeInfoCompat webNode2 = getNodeForView(webElement2);

    AccessibilityNodeInfoCompat nativeNode = getNodeForId(R.id.native_element);

    // Start at web element 1.
    mCursorController.setCursor(webNode1);
    waitForAccessibilityIdleSync();// ww  w.j av a2s  . c om

    // Navigate to next web element. We verify that CursorController doesn't move cursor.
    mCursorController.next(false /* wrap */, false /* scroll */, false /* useInput */,
            InputModeManager.INPUT_MODE_TOUCH);
    waitForAccessibilityIdleSync();

    assertTrue(delegate1.didPerformNextHtmlAction());
    assertEquals(webNode1, mCursorController.getCursor());

    // Set a11y focus to web element 2 manually using the CursorController.
    mCursorController.setCursor(webNode2);
    waitForAccessibilityIdleSync();

    // Navigate to previous web element. We verify that CursorController doesn't move cursor.
    mCursorController.previous(false /* wrap */, false /* scroll */, false /* useInput */,
            InputModeManager.INPUT_MODE_TOUCH);
    waitForAccessibilityIdleSync();

    assertTrue(delegate2.didPerformPreviousHtmlAction());
    assertEquals(webNode2, mCursorController.getCursor());

    // We're still at web element 2. Try to move to the native element.
    // We verify that the CursorController should move the cursor in this case.
    mCursorController.next(false /* wrap */, false /* scroll */, false /* useInput */,
            InputModeManager.INPUT_MODE_TOUCH);
    waitForAccessibilityIdleSync();

    assertEquals(nativeNode, mCursorController.getCursor());
}

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