C++ (Cpp) ModelNode::ChildAt示例

示例#1

void
VariablesView::TreeTableNodeExpandedChanged(TreeTable* table,
	const TreeTablePath& path, bool expanded)
{
	if (expanded) {
		ModelNode* node = (ModelNode*)fVariableTableModel->NodeForPath(path);
		if (node == NULL)
			return;

		fVariableTableModel->NodeExpanded(node);

		// request the values of all children that don't have any yet

		// If the node only has a hidden child, directly load the child's
		// children's values.
		if (node->CountChildren() == 1) {
			ModelNode* child = node->ChildAt(0);
			if (child->IsHidden())
				node = child;
		}

		// request the values
		for (int32 i = 0; ModelNode* child = node->ChildAt(i); i++) {
			if (child->IsPresentationNode())
				continue;

			_RequestNodeValue(child);
		}
	}
}

示例#2

void*
VariablesView::VariableTableModel::ChildAt(void* parent, int32 index) const
{
	if (parent == this)
		return fNodes.ItemAt(index);

	// If the node only has a hidden child, pretend the node directly has the
	// child's children.
	ModelNode* modelNode = (ModelNode*)parent;
	int32 childCount = modelNode->CountChildren();
	if (childCount == 1) {
		ModelNode* child = modelNode->ChildAt(0);
		if (child->IsHidden())
			return child->ChildAt(index);
	}

	return modelNode->ChildAt(index);
}