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## com.google.gwt.user.cellview.client
Class CellTreeNodeView.TreeNodeImpl

    java.lang.Object
      com.google.gwt.user.cellview.client.CellTreeNodeView.TreeNodeImpl

All Implemented Interfaces:
  TreeNode

Enclosing class:
  CellTreeNodeView<T>

    static class CellTreeNodeView.TreeNodeImpl

extends java.lang.Object
implements TreeNode

An implementation of `TreeNode` that delegates to a `CellTreeNodeView`. This class is intentionally static because we might move it to a new `CellTreeNodeView`, and we don't want non-static references to the old `CellTreeNodeView`.

Constructor Summary
`CellTreeNodeView.TreeNodeImpl(CellTreeNodeView<?> nodeView)`

Method Summary
`(package private) void` | `flush()` Flush pending changes in the view.
`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.
`(package private) CellTreeNodeView<?>` | `getNodeView()`
`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.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### CellTreeNodeView.TreeNodeImpl

    public CellTreeNodeView.TreeNodeImpl(CellTreeNodeView<?> nodeView)

Method Detail

### getChildCount

    public int getChildCount()

  Description copied from interface: `TreeNode`
  Get the number of children of the node.

  Specified by:
    `getChildCount` in interface `TreeNode`
  Returns:
    the child count

### getChildValue

    public java.lang.Object getChildValue(int index)

  Description copied from interface: `TreeNode`
  Get the value associated with a child node.

  Specified by:
    `getChildValue` in interface `TreeNode`
  Parameters:
    `index` - the child index
  Returns:
    the value

### getIndex

    public int getIndex()

  Description copied from interface: `TreeNode`
  Get the index of the current node relative to its parent.

  Specified by:
    `getIndex` in interface `TreeNode`
  Returns:
    the index of the current node

### getNodeView

    final CellTreeNodeView<?> getNodeView()

### getParent

    public TreeNode getParent()

  Description copied from interface: `TreeNode`
  Get the parent node of this node.

  Specified by:
    `getParent` in interface `TreeNode`
  Returns:
    the parent node, or null if this node is the root node

### getValue

    public java.lang.Object getValue()

  Description copied from interface: `TreeNode`
  Get the value associated with this node. This method can be called on destroyed nodes.

  Specified by:
    `getValue` in interface `TreeNode`
  Returns:
    the value

### isChildLeaf

    public boolean isChildLeaf(int index)

  Description copied from interface: `TreeNode`
  Check whether or not a child node is a leaf node.

  Specified by:
    `isChildLeaf` in interface `TreeNode`
  Parameters:
    `index` - the index of the child
  Returns:
    true if a leaf node, false if not

### isChildOpen

    public boolean isChildOpen(int index)

  Description copied from interface: `TreeNode`
  Check whether or not a child node is open.

  Specified by:
    `isChildOpen` in interface `TreeNode`
  Parameters:
    `index` - the index of the child
  Returns:
    true if open, false if closed

### isDestroyed

    public boolean isDestroyed()

  Description copied from interface: `TreeNode`
  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`.

  Specified by:
    `isDestroyed` in interface `TreeNode`
  Returns:
    true if destroyed, false if active

### setChildOpen

    public TreeNode setChildOpen(int index,
                                 boolean open)

  Description copied from interface: `TreeNode`
  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 `TreeNode.setChildOpen(int,boolean, boolean)`.

  Specified by:
    `setChildOpen` in interface `TreeNode`
  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

    public TreeNode setChildOpen(int index,
                                 boolean open,
                                 boolean fireEvents)

  Description copied from interface: `TreeNode`
  Open or close the node, optionally firing an event. If `open` is true and the `TreeNode` successfully opens, returns the child `TreeNode`.

  Specified by:
    `setChildOpen` in interface `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

### flush

    void flush()

  Flush pending changes in the view.

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