| 摘要 |
Computer-implemented method, computer system and computer program product are provided. A computer-implemented method may comprise the following steps:
providing a predefined tree, the tree having a plurality of nodes wherein each node has a predefined propagation attribute, a predefined control attribute and a predefined display attribute;
changing the control attribute of a node, wherein the node defines a sub-tree of the tree; each node of the sub-tree having a parent-node;
calculating the propagation attribute of each node of the sub-tree depending on the node's control attribute and the propagation attribute of the corresponding parent-node according to predefined propagation rules; and
adjusting the display attribute of each node of the sub-tree with respect to the node's control attribute and the node's propagation attribute (193) according to predefined display rules. |
