コード例 #1
0
  /** Handles a createView call. May or may not actually create a native view. */
  public void handleCreateView(
      ReactShadowNode node, int rootViewTag, @Nullable CatalystStylesDiffMap initialProps) {
    if (!ENABLED) {
      int tag = node.getReactTag();
      mUIViewOperationQueue.enqueueCreateView(rootViewTag, tag, node.getViewClass(), initialProps);
      return;
    }

    boolean isLayoutOnly =
        node.getViewClass().equals(ViewProps.VIEW_CLASS_NAME)
            && isLayoutOnlyAndCollapsable(initialProps);
    node.setIsLayoutOnly(isLayoutOnly);

    if (!isLayoutOnly) {
      mUIViewOperationQueue.enqueueCreateView(
          rootViewTag, node.getReactTag(), node.getViewClass(), initialProps);
    }
  }
コード例 #2
0
  private void transitionLayoutOnlyViewToNativeView(
      ReactShadowNode node, @Nullable CatalystStylesDiffMap props) {
    ReactShadowNode parent = node.getParent();
    if (parent == null) {
      node.setIsLayoutOnly(false);
      return;
    }

    // First, remove the node from its parent. This causes the parent to update its native children
    // count. The removeNodeFromParent call will cause all the view's children to be detached from
    // their native parent.
    int childIndex = parent.indexOf(node);
    parent.removeChildAt(childIndex);
    removeNodeFromParent(node, false);

    node.setIsLayoutOnly(false);

    // Create the view since it doesn't exist in the native hierarchy yet
    mUIViewOperationQueue.enqueueCreateView(
        node.getRootNode().getReactTag(), node.getReactTag(), node.getViewClass(), props);

    // Add the node and all its children as if we are adding a new nodes
    parent.addChildAt(node, childIndex);
    addNodeToNode(parent, node, childIndex);
    for (int i = 0; i < node.getChildCount(); i++) {
      addNodeToNode(node, node.getChildAt(i), i);
    }

    // Update layouts since the children of the node were offset by its x/y position previously.
    // Bit of a hack: we need to update the layout of this node's children now that it's no longer
    // layout-only, but we may still receive more layout updates at the end of this batch that we
    // don't want to ignore.
    Assertions.assertCondition(mTagsWithLayoutVisited.size() == 0);
    applyLayoutBase(node);
    for (int i = 0; i < node.getChildCount(); i++) {
      applyLayoutBase(node.getChildAt(i));
    }
    mTagsWithLayoutVisited.clear();
  }