All Known Implementing Classes:

EditTraversalStrategy, HierarchicalTraversalStrategy
```
public interface ITraversalStrategy
```
This interface is used to configure the traversal behavior when moving the selection in a NatTable via key actions, e.g. tab or the arrow keys. You can specify the scope, if the traversal should cycle and specify logic to determine the step count if necessary. It is also possible to add logic that determines whether a target is a valid selection movement target. This allows traversal of editable cells while non-editable cells would be skipped.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`ITraversalStrategy.TraversalScope`	The scope of the traversal which is necessary to determine what should happen on cycling.

Field Summary

Fields
Modifier and Type	Field	Description
`static ITraversalStrategy`	`AXIS_CYCLE_TRAVERSAL_STRATEGY`	`ITraversalStrategy` that specifies the following: traversal scope = axis cycle = true step count = 1 valid = true This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column when moving over the right border.
`static ITraversalStrategy`	`AXIS_TRAVERSAL_STRATEGY`	`ITraversalStrategy` that specifies the following: traversal scope = axis cycle = false step count = 1 valid = true This means for example, on moving a selection to the right, the selection will move one cell at a time and stop at the right border.
`static ITraversalStrategy`	`TABLE_CYCLE_TRAVERSAL_STRATEGY`	`ITraversalStrategy` that specifies the following: traversal scope = table cycle = true step count = 1 valid = true This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column and move one row down when moving over the right border.
`static ITraversalStrategy`	`TABLE_TRAVERSAL_STRATEGY`	`ITraversalStrategy` that specifies the following: traversal scope = table cycle = false step count = 1 valid = true This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column and move one row down when moving over the right border.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getStepCount()`
`ITraversalStrategy.TraversalScope`	`getTraversalScope()`
`boolean`	`isCycle()`
`boolean`	`isValidTarget(ILayerCell from, ILayerCell to)`	Checks whether the `ILayerCell` that would be selected after the selection movement is valid or not.

- Field Detail
  - AXIS_TRAVERSAL_STRATEGY
```
static final ITraversalStrategy AXIS_TRAVERSAL_STRATEGY
```
    ITraversalStrategy that specifies the following:
    
    traversal scope = axis
    
    cycle = false
    
    step count = 1
    
    valid = true
    
    This means for example, on moving a selection to the right, the selection will move one cell at a time and stop at the right border.
    This is the default traversal strategy.
  - AXIS_CYCLE_TRAVERSAL_STRATEGY
```
static final ITraversalStrategy AXIS_CYCLE_TRAVERSAL_STRATEGY
```
    ITraversalStrategy that specifies the following:
    
    traversal scope = axis
    
    cycle = true
    
    step count = 1
    
    valid = true
    
    This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column when moving over the right border.
  - TABLE_TRAVERSAL_STRATEGY
```
static final ITraversalStrategy TABLE_TRAVERSAL_STRATEGY
```
    ITraversalStrategy that specifies the following:
    
    traversal scope = table
    
    cycle = false
    
    step count = 1
    
    valid = true
    
    This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column and move one row down when moving over the right border. At the end of the table the selection will stop and doesn't move to the beginning.
  - TABLE_CYCLE_TRAVERSAL_STRATEGY
```
static final ITraversalStrategy TABLE_CYCLE_TRAVERSAL_STRATEGY
```
    ITraversalStrategy that specifies the following:
    
    traversal scope = table
    
    cycle = true
    
    step count = 1
    
    valid = true
    
    This means for example, on moving a selection to the right, the selection will move one cell at a time and jump to the first column and move one row down when moving over the right border. At the end of the table the selection will cycle to the beginning of the table.
- Method Detail
  - getTraversalScope
```
ITraversalStrategy.TraversalScope getTraversalScope()
```
    Returns:
    
    The ITraversalStrategy.TraversalScope this traversal strategy specifies.
  - isCycle
```
boolean isCycle()
```
    Returns:
    
    true if on traversal the selection should cycle, false if the selection should stay at the last/first position without cycling.
  - getStepCount
```
int getStepCount()
```
    Returns:
    
    The number of steps to jump on traversal.
  - isValidTarget
```
boolean isValidTarget(ILayerCell from,
                      ILayerCell to)
```
    Checks whether the ILayerCell that would be selected after the selection movement is valid or not. In case the target is invalid, the responsible command handler is able to react accordingly, e.g. move the next valid cell.
    This is for example useful for editing traversal. If the selection movement is triggered on committing a value in an editor, the next editable cell should be selected and the editor opened immediately.
    
    Parameters:
    
    from - The ILayerCell from which the selection movement is started.
    
    to - The ILayerCell to which the selection movement should be performed.
    
    Returns:
    
    true if the target is a valid target for selection movement, false if not

Interface ITraversalStrategy

Nested Class Summary

Field Summary

Method Summary

Field Detail

AXIS_TRAVERSAL_STRATEGY

AXIS_CYCLE_TRAVERSAL_STRATEGY

TABLE_TRAVERSAL_STRATEGY

TABLE_CYCLE_TRAVERSAL_STRATEGY

Method Detail

getTraversalScope

isCycle

getStepCount

isValidTarget