Package com.google.gwt.user.cellview.client

Interface TreeNode

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      int getChildCount()
      Get the number of children of the node.
      java.lang.Object getChildValue​(int index)
      Get the value associated with a child node.
      int getIndex()
      Get the index of the current node relative to its parent.
      TreeNode getParent()
      Get the parent node of this node.
      java.lang.Object getValue()
      Get the value associated with this node.
      boolean isChildLeaf​(int index)
      Check whether or not a child node is a leaf node.
      boolean isChildOpen​(int index)
      Check whether or not a child node is open.
      boolean isDestroyed()
      Check whether or not the current node is destroyed.
      TreeNode setChildOpen​(int index, boolean open)
      Open or close a child node and fire an event.
      TreeNode setChildOpen​(int index, boolean open, boolean fireEvents)
      Open or close the node, optionally firing an event.

    • Method Detail

      • getChildCount

        int getChildCount()
        Get the number of children of the node.
        Returns:
        the child count

      • getChildValue

        java.lang.Object getChildValue​(int index)
        Get the value associated with a child node.
        Parameters:
        index - the child index
        Returns:
        the value

      • getIndex

        int getIndex()
        Get the index of the current node relative to its parent.
        Returns:
        the index of the current node

      • getParent

        TreeNode getParent()
        Get the parent node of this node.
        Returns:
        the parent node, or null if this node is the root node

      • getValue

        java.lang.Object getValue()
        Get the value associated with this node. This method can be called on destroyed nodes.
        Returns:
        the value

      • isChildLeaf

        boolean isChildLeaf​(int index)
        Check whether or not a child node is a leaf node.
        Parameters:
        index - the index of the child
        Returns:
        true if a leaf node, false if not

      • isChildOpen

        boolean isChildOpen​(int index)
        Check whether or not a child node is open.
        Parameters:
        index - the index of the child
        Returns:
        true if open, false if closed

      • isDestroyed

        boolean isDestroyed()
        Check whether or not the current node is destroyed. The node is destroyed when it is closed, even if it still appears in the tree as an unopened non-leaf node. Once a node is destroyed, calling most methods on the node results in an IllegalStateException.
        Returns:
        true if destroyed, false if active

      • setChildOpen

        TreeNode setChildOpen​(int index,
                      boolean open)
        Open or close a child node and fire an event. If open is true and the TreeNode successfully opens, returns the child TreeNode. Delegates to setChildOpen(int,boolean, boolean).
        Parameters:
        index - the index of the child
        open - true to open, false to close
        Returns:
        the TreeNode that was opened, or null if the node was closed or could not be opened

      • setChildOpen

        TreeNode setChildOpen​(int index,
                      boolean open,
                      boolean fireEvents)
        Open or close the node, optionally firing an event. If open is true and the TreeNode successfully opens, returns the child TreeNode.
        Parameters:
        index - the index of the child
        open - true to open, false to flose
        fireEvents - true to fire an event, false not to
        Returns:
        the TreeNode that was opened, or null if the node was closed or could not be opened