Exemplo n.º 1
0
 private void removeShadowNode(ReactShadowNode nodeToRemove) {
   mNativeViewHierarchyOptimizer.handleRemoveNode(nodeToRemove);
   mShadowNodeRegistry.removeNode(nodeToRemove.getReactTag());
   for (int i = nodeToRemove.getChildCount() - 1; i >= 0; i--) {
     removeShadowNode(nodeToRemove.getChildAt(i));
   }
   nodeToRemove.removeAllChildren();
 }
Exemplo n.º 2
0
  /** Invoked by React to create a new node with a given tag has its properties changed. */
  public void updateView(int tag, String className, ReadableMap props) {
    ViewManager viewManager = mViewManagers.get(className);
    if (viewManager == null) {
      throw new IllegalViewOperationException("Got unknown view type: " + className);
    }
    ReactShadowNode cssNode = mShadowNodeRegistry.getNode(tag);
    if (cssNode == null) {
      throw new IllegalViewOperationException("Trying to update non-existent view with tag " + tag);
    }

    if (props != null) {
      CatalystStylesDiffMap styles = new CatalystStylesDiffMap(props);
      cssNode.updateProperties(styles);
      if (!cssNode.isVirtual()) {
        mNativeViewHierarchyOptimizer.handleUpdateView(cssNode, className, styles);
      }
    }
  }
Exemplo n.º 3
0
  /** Invoked at the end of the transaction to commit any updates to the node hierarchy. */
  public void dispatchViewUpdates(EventDispatcher eventDispatcher, int batchId) {
    for (int i = 0; i < mShadowNodeRegistry.getRootNodeCount(); i++) {
      int tag = mShadowNodeRegistry.getRootTag(i);
      ReactShadowNode cssRoot = mShadowNodeRegistry.getNode(tag);
      notifyOnBeforeLayoutRecursive(cssRoot);

      SystraceMessage.beginSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE, "cssRoot.calculateLayout")
          .arg("rootTag", tag)
          .flush();
      try {
        cssRoot.calculateLayout(mLayoutContext);
      } finally {
        Systrace.endSection(Systrace.TRACE_TAG_REACT_JAVA_BRIDGE);
      }
      applyUpdatesRecursive(cssRoot, 0f, 0f, eventDispatcher);
    }

    mNativeViewHierarchyOptimizer.onBatchComplete();
    mOperationsQueue.dispatchViewUpdates(batchId);
  }
Exemplo n.º 4
0
  /** Invoked by React to create a new node with a given tag, class name and properties. */
  public void createView(int tag, String className, int rootViewTag, ReadableMap props) {
    ViewManager viewManager = mViewManagers.get(className);
    ReactShadowNode cssNode = viewManager.createShadowNodeInstance();
    ReactShadowNode rootNode = mShadowNodeRegistry.getNode(rootViewTag);
    cssNode.setReactTag(tag);
    cssNode.setViewClassName(className);
    cssNode.setRootNode(rootNode);
    cssNode.setThemedContext(rootNode.getThemedContext());

    mShadowNodeRegistry.addNode(cssNode);

    CatalystStylesDiffMap styles = null;
    if (props != null) {
      styles = new CatalystStylesDiffMap(props);
      cssNode.updateProperties(styles);
    }

    if (!cssNode.isVirtual()) {
      mNativeViewHierarchyOptimizer.handleCreateView(cssNode, rootViewTag, styles);
    }
  }
Exemplo n.º 5
0
  /**
   * Invoked when there is a mutation in a node tree.
   *
   * @param tag react tag of the node we want to manage
   * @param indicesToRemove ordered (asc) list of indicies at which view should be removed
   * @param viewsToAdd ordered (asc based on mIndex property) list of tag-index pairs that represent
   *     a view which should be added at the specified index
   * @param tagsToDelete list of tags corresponding to views that should be removed
   */
  public void manageChildren(
      int viewTag,
      @Nullable ReadableArray moveFrom,
      @Nullable ReadableArray moveTo,
      @Nullable ReadableArray addChildTags,
      @Nullable ReadableArray addAtIndices,
      @Nullable ReadableArray removeFrom) {
    ReactShadowNode cssNodeToManage = mShadowNodeRegistry.getNode(viewTag);

    int numToMove = moveFrom == null ? 0 : moveFrom.size();
    int numToAdd = addChildTags == null ? 0 : addChildTags.size();
    int numToRemove = removeFrom == null ? 0 : removeFrom.size();

    if (numToMove != 0 && (moveTo == null || numToMove != moveTo.size())) {
      throw new IllegalViewOperationException("Size of moveFrom != size of moveTo!");
    }

    if (numToAdd != 0 && (addAtIndices == null || numToAdd != addAtIndices.size())) {
      throw new IllegalViewOperationException("Size of addChildTags != size of addAtIndices!");
    }

    // We treat moves as an add and a delete
    ViewAtIndex[] viewsToAdd = new ViewAtIndex[numToMove + numToAdd];
    int[] indicesToRemove = new int[numToMove + numToRemove];
    int[] tagsToRemove = new int[indicesToRemove.length];
    int[] tagsToDelete = new int[numToRemove];

    if (numToMove > 0) {
      Assertions.assertNotNull(moveFrom);
      Assertions.assertNotNull(moveTo);
      for (int i = 0; i < numToMove; i++) {
        int moveFromIndex = moveFrom.getInt(i);
        int tagToMove = cssNodeToManage.getChildAt(moveFromIndex).getReactTag();
        viewsToAdd[i] = new ViewAtIndex(tagToMove, moveTo.getInt(i));
        indicesToRemove[i] = moveFromIndex;
        tagsToRemove[i] = tagToMove;
      }
    }

    if (numToAdd > 0) {
      Assertions.assertNotNull(addChildTags);
      Assertions.assertNotNull(addAtIndices);
      for (int i = 0; i < numToAdd; i++) {
        int viewTagToAdd = addChildTags.getInt(i);
        int indexToAddAt = addAtIndices.getInt(i);
        viewsToAdd[numToMove + i] = new ViewAtIndex(viewTagToAdd, indexToAddAt);
      }
    }

    if (numToRemove > 0) {
      Assertions.assertNotNull(removeFrom);
      for (int i = 0; i < numToRemove; i++) {
        int indexToRemove = removeFrom.getInt(i);
        int tagToRemove = cssNodeToManage.getChildAt(indexToRemove).getReactTag();
        indicesToRemove[numToMove + i] = indexToRemove;
        tagsToRemove[numToMove + i] = tagToRemove;
        tagsToDelete[i] = tagToRemove;
      }
    }

    // NB: moveFrom and removeFrom are both relative to the starting state of the View's children.
    // moveTo and addAt are both relative to the final state of the View's children.
    //
    // 1) Sort the views to add and indices to remove by index
    // 2) Iterate the indices being removed from high to low and remove them. Going high to low
    //    makes sure we remove the correct index when there are multiple to remove.
    // 3) Iterate the views being added by index low to high and add them. Like the view removal,
    //    iteration direction is important to preserve the correct index.

    Arrays.sort(viewsToAdd, ViewAtIndex.COMPARATOR);
    Arrays.sort(indicesToRemove);

    // Apply changes to CSSNode hierarchy
    int lastIndexRemoved = -1;
    for (int i = indicesToRemove.length - 1; i >= 0; i--) {
      int indexToRemove = indicesToRemove[i];
      if (indexToRemove == lastIndexRemoved) {
        throw new IllegalViewOperationException(
            "Repeated indices in Removal list for view tag: " + viewTag);
      }
      cssNodeToManage.removeChildAt(indicesToRemove[i]);
      lastIndexRemoved = indicesToRemove[i];
    }

    for (int i = 0; i < viewsToAdd.length; i++) {
      ViewAtIndex viewAtIndex = viewsToAdd[i];
      ReactShadowNode cssNodeToAdd = mShadowNodeRegistry.getNode(viewAtIndex.mTag);
      if (cssNodeToAdd == null) {
        throw new IllegalViewOperationException(
            "Trying to add unknown view tag: " + viewAtIndex.mTag);
      }
      cssNodeToManage.addChildAt(cssNodeToAdd, viewAtIndex.mIndex);
    }

    if (!cssNodeToManage.isVirtual() && !cssNodeToManage.isVirtualAnchor()) {
      mNativeViewHierarchyOptimizer.handleManageChildren(
          cssNodeToManage, indicesToRemove, tagsToRemove, viewsToAdd, tagsToDelete);
    }

    for (int i = 0; i < tagsToDelete.length; i++) {
      removeShadowNode(mShadowNodeRegistry.getNode(tagsToDelete[i]));
    }
  }