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com.google.gwt.user.cellview.client
Class CellBrowser.TreeNodeImpl<C>

java.lang.Object
  extended by com.google.gwt.user.cellview.client.CellBrowser.TreeNodeImpl<C>
Type Parameters:
C - the data type of the children of the node
All Implemented Interfaces:
TreeNode
Enclosing class:
CellBrowser
 class CellBrowser.TreeNodeImpl<C>
extends java.lang.Object
implements TreeNode

A node in the tree.

Constructor Summary
CellBrowser.TreeNodeImpl(TreeViewModel.NodeInfo<C> nodeInfo, java.lang.Object value, CellBrowser.BrowserCellList<C> display, Widget widget)
          Construct a new CellBrowser.TreeNodeImpl.
 
Method Summary
 int getChildCount()
          Get the number of children of the node.
 C getChildValue(int index)
          Get the value associated with a child node.
(package private)  CellBrowser.BrowserCellList<C> getDisplay()
           
(package private)  java.lang.Object getFocusedKey()
          Return the key of the value that is focused in this node's display.
 int getIndex()
          Get the index of the current node relative to its parent.
 CellBrowser.TreeNodeImpl<?> 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.
(package private)  boolean isFocusedOpen()
          Return true if the focused value is open, false if not.
 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

CellBrowser.TreeNodeImpl

public CellBrowser.TreeNodeImpl(TreeViewModel.NodeInfo<C> nodeInfo,
                                java.lang.Object value,
                                CellBrowser.BrowserCellList<C> display,
                                Widget widget)
Construct a new CellBrowser.TreeNodeImpl.

Parameters:
nodeInfo - the nodeInfo for the children nodes
value - the value of the node
display - the display associated with the node
widget - the widget that wraps the display
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 C 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

getParent

public CellBrowser.TreeNodeImpl<?> 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

getDisplay

CellBrowser.BrowserCellList<C> getDisplay()

getFocusedKey

java.lang.Object getFocusedKey()
Return the key of the value that is focused in this node's display.

isFocusedOpen

boolean isFocusedOpen()
Return true if the focused value is open, false if not.

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