Almost all of the TreeNode manipulation features are implemented on TreeNodeManager, this help us to test, extend and change the implementation for some features if it needed.
By Default TreeViewAdapter depend on the Default TreeNodeManager class but if you want a custom implementation, you can easily create a new manager class that extend TreeNodeManager and pass it on TreeViewAdapter constructor
TreeViewAdapter adapter = new TreeViewAdapter(factory, customTreeNodeManager);The TreeNodeManager class has many method to help easily provide features.
Set the current visible tree nodes
public void setTreeNodes(List<TreeNode> treeNodes)Get the Current visible Tree nodes
public List<TreeNode> getTreeNodes()Get TreeNode by index
public TreeNode get(int index)Add new TreeNode
public boolean addNode(TreeNode node)Clear the current TreeNodes and add new TreeNodes
public void updateNodes(List<TreeNode> newNodes)Remove TreeNode
public boolean removeNode(TreeNode node)Clear all TreeNodes
public void clearNodes()Get the current TreeNodes size
public int size()Collapsing TreeNode
public int collapseNode(TreeNode node)Expanding TreeNode
public int expandNode(TreeNode node)Collapsing TreeNode full branch
public int collapseNodeBranch(TreeNode node)Expanding TreeNode full branch
public int expandNodeBranch(TreeNode node)Expanding TreeNode branch until specific level
public void expandNodeToLevel(TreeNode node, int level)Expanding all tree nodes branches to until specific level
public void expandNodesAtLevel(int level)Collapsing all nodes in the tree with their children
public void collapseAll()Expanding all nodes in the tree with their children
public void expandAll()If you want more information about them, please check the javadoc.