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

Example 11 with AccessibilityNodeProvider

use of android.view.accessibility.AccessibilityNodeProvider in project android_frameworks_base by DirtyUnicorns.

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 12 with AccessibilityNodeProvider

use of android.view.accessibility.AccessibilityNodeProvider in project android_frameworks_base by DirtyUnicorns.

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 13 with AccessibilityNodeProvider

use of android.view.accessibility.AccessibilityNodeProvider in project android_frameworks_base by DirtyUnicorns.

the class View method onProvideVirtualStructure.

/**
     * Called when assist structure is being retrieved from a view as part of
     * {@link android.app.Activity#onProvideAssistData Activity.onProvideAssistData} to
     * generate additional virtual structure under this view.  The defaullt implementation
     * uses {@link #getAccessibilityNodeProvider()} to try to generate this from the
     * view's virtual accessibility nodes, if any.  You can override this for a more
     * optimal implementation providing this data.
     */
public void onProvideVirtualStructure(ViewStructure structure) {
    AccessibilityNodeProvider provider = getAccessibilityNodeProvider();
    if (provider != null) {
        AccessibilityNodeInfo info = createAccessibilityNodeInfo();
        structure.setChildCount(1);
        ViewStructure root = structure.newChild(0);
        populateVirtualStructure(root, provider, info);
        info.recycle();
    }
}

Example 14 with AccessibilityNodeProvider

use of android.view.accessibility.AccessibilityNodeProvider in project android_frameworks_base by ParanoidAndroid.

the class ViewRootImpl method drawAccessibilityFocusedDrawableIfNeeded.

/**
     * We want to draw a highlight around the current accessibility focused.
     * Since adding a style for all possible view is not a viable option we
     * have this specialized drawing method.
     *
     * Note: We are doing this here to be able to draw the highlight for
     *       virtual views in addition to real ones.
     *
     * @param canvas The canvas on which to draw.
     */
private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) {
    AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext);
    if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) {
        return;
    }
    if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) {
        return;
    }
    Drawable drawable = getAccessibilityFocusedDrawable();
    if (drawable == null) {
        return;
    }
    AccessibilityNodeProvider provider = mAccessibilityFocusedHost.getAccessibilityNodeProvider();
    Rect bounds = mView.mAttachInfo.mTmpInvalRect;
    if (provider == null) {
        mAccessibilityFocusedHost.getBoundsOnScreen(bounds);
    } else {
        if (mAccessibilityFocusedVirtualView == null) {
            return;
        }
        mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds);
    }
    bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop);
    bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight);
    drawable.setBounds(bounds);
    drawable.draw(canvas);
}

Example 15 with AccessibilityNodeProvider

use of android.view.accessibility.AccessibilityNodeProvider in project android_frameworks_base by ParanoidAndroid.

the class ViewRootImpl method requestSendAccessibilityEvent.

public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) {
    if (mView == null) {
        return false;
    }
    // Intercept accessibility focus events fired by virtual nodes to keep
    // track of accessibility focus position in such nodes.
    final int eventType = event.getEventType();
    switch(eventType) {
        case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED:
            {
                final long sourceNodeId = event.getSourceNodeId();
                final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(sourceNodeId);
                View source = mView.findViewByAccessibilityId(accessibilityViewId);
                if (source != null) {
                    AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider();
                    if (provider != null) {
                        AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo(AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId));
                        setAccessibilityFocus(source, node);
                    }
                }
            }
            break;
        case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED:
            {
                final long sourceNodeId = event.getSourceNodeId();
                final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(sourceNodeId);
                View source = mView.findViewByAccessibilityId(accessibilityViewId);
                if (source != null) {
                    AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider();
                    if (provider != null) {
                        setAccessibilityFocus(null, null);
                    }
                }
            }
            break;
    }
    mAccessibilityManager.sendAccessibilityEvent(event);
    return true;
}