Examples with AccessibilityNodeInfo android.view.accessibility.AccessibilityNodeInfo used on opensource projects

Example 21 with AccessibilityNodeInfo

use of android.view.accessibility.AccessibilityNodeInfo in project platform_frameworks_base by android.

the class View method createAccessibilityNodeInfoInternal.

/**
     * @see #createAccessibilityNodeInfo()
     *
     * @hide
     */
public AccessibilityNodeInfo createAccessibilityNodeInfoInternal() {
    AccessibilityNodeProvider provider = getAccessibilityNodeProvider();
    if (provider != null) {
        return provider.createAccessibilityNodeInfo(AccessibilityNodeProvider.HOST_VIEW_ID);
    } else {
        AccessibilityNodeInfo info = AccessibilityNodeInfo.obtain(this);
        onInitializeAccessibilityNodeInfo(info);
        return info;
    }
}

Example 22 with AccessibilityNodeInfo

use of android.view.accessibility.AccessibilityNodeInfo in project platform_frameworks_base by android.

the class ViewRootImpl method setAccessibilityFocus.

void setAccessibilityFocus(View view, AccessibilityNodeInfo node) {
    // to clear the focus and invalidate the virtual view bounds.
    if (mAccessibilityFocusedVirtualView != null) {
        AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView;
        View focusHost = mAccessibilityFocusedHost;
        // Wipe the state of the current accessibility focus since
        // the call into the provider to clear accessibility focus
        // will fire an accessibility event which will end up calling
        // this method and we want to have clean state when this
        // invocation happens.
        mAccessibilityFocusedHost = null;
        mAccessibilityFocusedVirtualView = null;
        // Clear accessibility focus on the host after clearing state since
        // this method may be reentrant.
        focusHost.clearAccessibilityFocusNoCallbacks(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
        AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider();
        if (provider != null) {
            // Invalidate the area of the cleared accessibility focus.
            focusNode.getBoundsInParent(mTempRect);
            focusHost.invalidate(mTempRect);
            // Clear accessibility focus in the virtual node.
            final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId(focusNode.getSourceNodeId());
            provider.performAction(virtualNodeId, AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null);
        }
        focusNode.recycle();
    }
    if ((mAccessibilityFocusedHost != null) && (mAccessibilityFocusedHost != view)) {
        // Clear accessibility focus in the view.
        mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS);
    }
    // Set the new focus host and node.
    mAccessibilityFocusedHost = view;
    mAccessibilityFocusedVirtualView = node;
    if (mAttachInfo.mHardwareRenderer != null) {
        mAttachInfo.mHardwareRenderer.invalidateRoot();
    }
}

Example 23 with AccessibilityNodeInfo

use of android.view.accessibility.AccessibilityNodeInfo in project platform_frameworks_base by android.

the class ExploreByTouchHelper method createNodeForHost.

/**
     * Constructs and returns an {@link AccessibilityNodeInfo} for the
     * host view populated with its virtual descendants.
     *
     * @return An {@link AccessibilityNodeInfo} for the parent node.
     */
private AccessibilityNodeInfo createNodeForHost() {
    final AccessibilityNodeInfo node = AccessibilityNodeInfo.obtain(mView);
    mView.onInitializeAccessibilityNodeInfo(node);
    final int realNodeCount = node.getChildCount();
    // Allow the client to populate the host node.
    onPopulateNodeForHost(node);
    // Add the virtual descendants.
    if (mTempArray == null) {
        mTempArray = new IntArray();
    } else {
        mTempArray.clear();
    }
    final IntArray virtualViewIds = mTempArray;
    getVisibleVirtualViews(virtualViewIds);
    if (realNodeCount > 0 && virtualViewIds.size() > 0) {
        throw new RuntimeException("Views cannot have both real and virtual children");
    }
    final int N = virtualViewIds.size();
    for (int i = 0; i < N; i++) {
        node.addChild(mView, virtualViewIds.get(i));
    }
    return node;
}

Example 24 with AccessibilityNodeInfo

use of android.view.accessibility.AccessibilityNodeInfo in project platform_frameworks_base by android.

the class AccessibilityInteractionController method findAccessibilityNodeInfosByTextUiThread.

private void findAccessibilityNodeInfosByTextUiThread(Message message) {
    final int flags = message.arg1;
    SomeArgs args = (SomeArgs) message.obj;
    final String text = (String) args.arg1;
    final IAccessibilityInteractionConnectionCallback callback = (IAccessibilityInteractionConnectionCallback) args.arg2;
    final MagnificationSpec spec = (MagnificationSpec) args.arg3;
    final int accessibilityViewId = args.argi1;
    final int virtualDescendantId = args.argi2;
    final int interactionId = args.argi3;
    final Region interactiveRegion = (Region) args.arg4;
    args.recycle();
    List<AccessibilityNodeInfo> infos = null;
    try {
        if (mViewRootImpl.mView == null || mViewRootImpl.mAttachInfo == null) {
            return;
        }
        mViewRootImpl.mAttachInfo.mAccessibilityFetchFlags = flags;
        View root = null;
        if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
            root = findViewByAccessibilityId(accessibilityViewId);
        } else {
            root = mViewRootImpl.mView;
        }
        if (root != null && isShown(root)) {
            AccessibilityNodeProvider provider = root.getAccessibilityNodeProvider();
            if (provider != null) {
                if (virtualDescendantId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
                    infos = provider.findAccessibilityNodeInfosByText(text, virtualDescendantId);
                } else {
                    infos = provider.findAccessibilityNodeInfosByText(text, AccessibilityNodeProvider.HOST_VIEW_ID);
                }
            } else if (virtualDescendantId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
                ArrayList<View> foundViews = mTempArrayList;
                foundViews.clear();
                root.findViewsWithText(foundViews, text, View.FIND_VIEWS_WITH_TEXT | View.FIND_VIEWS_WITH_CONTENT_DESCRIPTION | View.FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS);
                if (!foundViews.isEmpty()) {
                    infos = mTempAccessibilityNodeInfoList;
                    infos.clear();
                    final int viewCount = foundViews.size();
                    for (int i = 0; i < viewCount; i++) {
                        View foundView = foundViews.get(i);
                        if (isShown(foundView)) {
                            provider = foundView.getAccessibilityNodeProvider();
                            if (provider != null) {
                                List<AccessibilityNodeInfo> infosFromProvider = provider.findAccessibilityNodeInfosByText(text, AccessibilityNodeProvider.HOST_VIEW_ID);
                                if (infosFromProvider != null) {
                                    infos.addAll(infosFromProvider);
                                }
                            } else {
                                infos.add(foundView.createAccessibilityNodeInfo());
                            }
                        }
                    }
                }
            }
        }
    } finally {
        try {
            mViewRootImpl.mAttachInfo.mAccessibilityFetchFlags = 0;
            applyAppScaleAndMagnificationSpecIfNeeded(infos, spec);
            // system process and obtained from a pool when read from parcel.
            if (spec != null && android.os.Process.myPid() != Binder.getCallingPid()) {
                spec.recycle();
            }
            adjustIsVisibleToUserIfNeeded(infos, interactiveRegion);
            callback.setFindAccessibilityNodeInfosResult(infos, interactionId);
        } catch (RemoteException re) {
        /* ignore - the other side will time out */
        }
        // the system process and instantiated  when read from parcel.
        if (interactiveRegion != null && android.os.Process.myPid() == Binder.getCallingPid()) {
            interactiveRegion.recycle();
        }
    }
}

Example 25 with AccessibilityNodeInfo

use of android.view.accessibility.AccessibilityNodeInfo in project platform_frameworks_base by android.

the class AccessibilityInteractionController method focusSearchUiThread.

private void focusSearchUiThread(Message message) {
    final int flags = message.arg1;
    final int accessibilityViewId = message.arg2;
    SomeArgs args = (SomeArgs) message.obj;
    final int direction = args.argi2;
    final int interactionId = args.argi3;
    final IAccessibilityInteractionConnectionCallback callback = (IAccessibilityInteractionConnectionCallback) args.arg1;
    final MagnificationSpec spec = (MagnificationSpec) args.arg2;
    final Region interactiveRegion = (Region) args.arg3;
    args.recycle();
    AccessibilityNodeInfo next = null;
    try {
        if (mViewRootImpl.mView == null || mViewRootImpl.mAttachInfo == null) {
            return;
        }
        mViewRootImpl.mAttachInfo.mAccessibilityFetchFlags = flags;
        View root = null;
        if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID) {
            root = findViewByAccessibilityId(accessibilityViewId);
        } else {
            root = mViewRootImpl.mView;
        }
        if (root != null && isShown(root)) {
            View nextView = root.focusSearch(direction);
            if (nextView != null) {
                next = nextView.createAccessibilityNodeInfo();
            }
        }
    } finally {
        try {
            mViewRootImpl.mAttachInfo.mAccessibilityFetchFlags = 0;
            applyAppScaleAndMagnificationSpecIfNeeded(next, spec);
            // system process and obtained from a pool when read from parcel.
            if (spec != null && android.os.Process.myPid() != Binder.getCallingPid()) {
                spec.recycle();
            }
            adjustIsVisibleToUserIfNeeded(next, interactiveRegion);
            callback.setFindAccessibilityNodeInfoResult(next, interactionId);
        } catch (RemoteException re) {
        /* ignore - the other side will time out */
        }
        // the system process and instantiated  when read from parcel.
        if (interactiveRegion != null && android.os.Process.myPid() == Binder.getCallingPid()) {
            interactiveRegion.recycle();
        }
    }
}