Package org.eclipse.nebula.widgets.nattable.tree

Class TreeRowModel<T>

java.lang.Object
org.eclipse.nebula.widgets.nattable.tree.AbstractTreeRowModel<T>
org.eclipse.nebula.widgets.nattable.tree.TreeRowModel<T>
Type Parameters:
T - The type of the elements in the tree
All Implemented Interfaces:
ITreeRowModel<T>
public class TreeRowModel<T> extends AbstractTreeRowModel<T>
Implementation of ITreeRowModel that is used to perform expand/collapse operations using the approach of hiding and showing rows.

  • Field Details

    • parentIndexes

      protected final Set<Integer> parentIndexes

  • Constructor Details

    • TreeRowModel

      public TreeRowModel(ITreeData<T> treeData)

  • Method Details

    • isCollapsed

      public boolean isCollapsed(int index)
      Parameters:
      index - The index of the tree element to check.
      Returns:
      true if the children of the tree node at the given index are visible, false if not.

    • collapse

      public List<Integer> collapse(int index)
      Description copied from interface: ITreeRowModel
      Collapses the tree node at the given index.
      Parameters:
      index - The index of the node in the collection that should be collapsed.
      Returns:
      The indexes of all children of the collapsed tree node that become invisible by performing the collapse operation.

    • internalCollapse

      protected Collection<Integer> internalCollapse(int index)
      Performs the collapse operation without notifying the listeners while processing.
      Parameters:
      index - The index of the node in the collection that should be collapsed.
      Returns:
      The indexes of all children of the collapsed tree node that become invisible by performing the collapse operation.

    • collapseAll

      public List<Integer> collapseAll()
      Description copied from interface: ITreeRowModel
      Collapses all tree nodes.
      Returns:
      The indexes of all children that are hidden after the collapse operation is performed.

    • expand

      public List<Integer> expand(int index)
      Description copied from interface: ITreeRowModel
      Expands the tree node at the given index.
      Parameters:
      index - The index of the node in the collection that should be expanded.
      Returns:
      The indexes of all children of the expanded tree node that become visible by performing the expand operation.

    • internalExpand

      protected Collection<Integer> internalExpand(int index)
      Performs the expand operations iteratively without notifying the listeners while processing.
      Parameters:
      index - The index of the node in the collection that should be expanded.
      Returns:
      The indexes of all children of the expanded tree node that become visible by performing the expand operation.

    • expandAll

      public List<Integer> expandAll()
      Description copied from interface: ITreeRowModel
      Expands all tree nodes.
      Returns:
      The indexes of all children that are showed after the expand operation is performed.

    • expandToLevel

      public List<Integer> expandToLevel(int level)
      Description copied from interface: ITreeRowModel
      Expands all tree nodes to a certain level.
      Parameters:
      level - The level to which the tree nodes should be expanded.
      Returns:
      The indexes of all children that are showed after the expand operation is performed.

    • expandToLevel

      public List<Integer> expandToLevel(int parentIndex, int level)
      Description copied from interface: ITreeRowModel
      Expands the tree node at the given index to a certain level.
      Parameters:
      parentIndex - The index of the node in the collection that should be expanded.
      level - The level to which the tree node should be expanded.
      Returns:
      The indexes of all children that are showed after the expand operation is performed.

    • internalExpandToLevel

      protected Collection<Integer> internalExpandToLevel(int index, int level)
      Performs the expand operations iteratively without notifying the listeners while processing.
      Parameters:
      index - The index of the node in the collection that should be expanded.
      level - The level to which the tree nodes should be expanded.
      Returns:
      The indexes of all children of the expanded tree node that become visible by performing the expand operation.