java.lang.Object
- com.flexganttfx.model.Row<P,C,A>

Type Parameters:

P - the type of the parent row (example: row is of type "Building" and parent type is "Factory" to express that the factory consists of several buildings).

C - the type of the children rows (example: row is of type "Building" and children type is "Machine" to express that the building houses several machines).

A - the type of the activities shown in this row (example: row is of type "Building", activities are "ProductionOrders" that are executed in this building).
```
public abstract class Row<P extends Row<?,?,?>,C extends Row<?,?,?>,A extends Activity>
extends Object
```
A row object is used to store the activities found on a row of the Gantt chart. These activities are not stored directly on the row but in an activity repository (see getRepository()). The default repository is of type IntervalTreeActivityRepository and can be replaced by calling setRepository(ActivityRepository). Activities can be placed on lines within the row. The row delegates this work to a LinesManager. The default manager is of type EqualLinesManager. To replace the manager simply call setLinesManager(LinesManager).
Code Example
```
 public class Aircraft extends Row<Fleet, CrewMember, Flight> {
 }
 
```
This now allows you to call:
```
 Aircraft aircraft = new Aircraft();
 ...
 Fleet fleet = aircraft.getParent();
 List<CrewMember> crew = aircraft.getChildren();
 
```
Lazy Loading
Simply override the isLeaf() method to control whether a row is a parent row or not. Then listen to changes of the expanded property to load the children when the user toggles the expansion state.
```
 static class HelloLazyRow extends
         Row<HelloLazyRow, HelloLazyRow, Activity> {

     public HelloLazyRow(String name) {
         super(name);

         expandedProperty().addListener(it -> loadChildrenLazily());
     }

     @Override
     public boolean isLeaf() {
         return false;
     }

     private void loadChildrenLazily() {
         getChildren().add(new HelloLazyRow("Child 1"));
         getChildren().add(new HelloLazyRow("Child 2"));
         ...
         getChildren().add(new HelloLazyRow("Child N"));
     }
 }
 
```
Since:

1.0

Field Summary

Fields
Modifier and Type Field Description

static double DEFAULT_ROW_HEIGHT
The default height of a row (24 pixels).

Constructor Summary

Constructors
Constructor	Description
`Row()`	Constructs a new row with an `IntervalTreeActivityRepository` and an `EqualLinesManager`.
`Row(String name)`	Constructs a new row with an `IntervalTreeActivityRepository` and an `EqualLinesManager` and the given name.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addActivity(Layer layer, A activity)`	Adds the given activity for the given layer to this row.
`void`	`clearActivities()`	Removes all activities from the row.
`void`	`clearActivities(Layer layer)`	Removes all activities on the given layer from the row.
`BooleanProperty`	`expandedProperty()`	The property used to store the expansion state of the row.
`ObservableList<Calendar<?>>`	`getCalendars()`	Returns a list of calendars attached to this row.
`ObservableList<C>`	`getChildren()`	Returns the list of children of this row.
`Instant`	`getEarliestTimeUsed()`	Returns the earliest time used by the row.
`double`	`getHeight()`	Returns the value of the `heightProperty()`.
`Instant`	`getLatestTimeUsed()`	Returns the latest time used by the row.
`Layout`	`getLayout()`	Returns the value of the `layoutProperty()`.
`int`	`getLineCount()`	Returns the value of the `lineCountProperty()`.
`double`	`getLineHeight(int lineIndex)`	Returns the height of the given inner line.
`int`	`getLineIndex(A activity)`	Returns the line index for the given activity.
`Layout`	`getLineLayout(int lineIndex)`	Returns a line-specific layout for the given line.
`double`	`getLineLocation(int lineIndex)`	Returns the location of the given inner line.
`LinesManager<A>`	`getLinesManager()`	Returns the value of `linesManagerProperty()`.
`double`	`getMaxHeight()`	Returns the value of `maxHeightProperty()`.
`double`	`getMinHeight()`	Returns the value of the `minHeightProperty()`.
`String`	`getName()`	Returns the value of the `nameProperty()`.
`P`	`getParent()`	The parent of this row.
`Row[]`	`getPath()`	Returns the path to this row, for example [ROOT, Parent1, Parent2, this].
`ObservableMap<Object,Object>`	`getProperties()`	Returns an observable map of properties on this row.
`ActivityRepository<A>`	`getRepository()`	Returns the value of the `repositoryProperty()`.
`Object`	`getUserObject()`	Returns the value of `userObjectProperty()`.
`ZoneId`	`getZoneId()`	Returns the value of the `zoneIdProperty()`.
`boolean`	`hasChildren(Predicate predicate)`	Checks whether the given row has any child rows (no matter how deep) that fulfill the given predicate.
`boolean`	`hasProperties()`	Tests if the row has properties.
`DoubleProperty`	`heightProperty()`	The property used to store the height of the row.
`boolean`	`isExpanded()`	Returns the value of the `expandedProperty()`.
`boolean`	`isLeaf()`	A row is a leaf in the tree table view on the left-hand side of the Gantt chart if it has no children.
`boolean`	`isShowing()`	Returns the value of `showingProperty()`.
`ObjectProperty<Layout>`	`layoutProperty()`	The property used to store the layout used for laying out the activities that are directly associated with the row (and not on an inner line).
`ReadOnlyBooleanProperty`	`leafProperty()`	Represents the TreeItem leaf property, which is true if the TreeItem has no children.
`IntegerProperty`	`lineCountProperty()`	The property used to keep track of the number of inner lines shown by the row.
`ObjectProperty<LinesManager<A>>`	`linesManagerProperty()`	The property used to store the `LinesManager` instance for this row.
`DoubleProperty`	`maxHeightProperty()`	The property used to store the maximum height of the row.
`DoubleProperty`	`minHeightProperty()`	The property used to store the minimum height of the row.
`StringProperty`	`nameProperty()`	The property used to store the name of the row.
`ReadOnlyObjectProperty<P>`	`parentProperty()`	Returns a read-only property used to store the parent row of this row.
`void`	`removeActivity(Layer layer, A activity)`	Removes the given activity from the given layer from this row.
`ObjectProperty<ActivityRepository<A>>`	`repositoryProperty()`	The property used to store the activity repository for the row.
`void`	`setExpanded(boolean expanded)`	Sets the value of the `expandedProperty()`.
`void`	`setHeight(double height)`	Sets the value of the `heightProperty()`.
`void`	`setLayout(Layout layout)`	Sets the value of the `layoutProperty()`.
`void`	`setLineCount(int count)`	Sets the value of the `lineCountProperty()`.
`void`	`setLinesManager(LinesManager<A> manager)`	Sets the value of `linesManagerProperty()`.
`void`	`setMaxHeight(double height)`	Sets the value of the `maxHeightProperty()`.
`void`	`setMinHeight(double height)`	Sets a new value for the `minHeightProperty()`.
`void`	`setName(String name)`	Sets the value of the `nameProperty()`.
`void`	`setRepository(ActivityRepository<A> repository)`	Sets the value of the `repositoryProperty()`.
`void`	`setUserObject(Object obj)`	Sets the value of `userObjectProperty()`.
`void`	`setZoneId(ZoneId zoneId)`	Sets the value of the `zoneIdProperty()`.
`ReadOnlyBooleanProperty`	`showingProperty()`	The property used to express whether a row is currently showing in the view or not.
`String`	`toString()`
`ObjectProperty<Object>`	`userObjectProperty()`	The property used to store a row-specific user object.
`ObjectProperty<ZoneId>`	`zoneIdProperty()`	The property used to store the zone ID for this row.

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

- Field Detail
  - DEFAULT_ROW_HEIGHT
```
public static final double DEFAULT_ROW_HEIGHT
```
    The default height of a row (24 pixels).
    
    See Also:
    
    setHeight(double), setMinHeight(double), setMaxHeight(double), Constant Field Values
- Constructor Detail
  - Row
```
public Row()
```
    Constructs a new row with an IntervalTreeActivityRepository and an EqualLinesManager.
    
    Since:
    
    1.0
  - Row
```
public Row(String name)
```
    Constructs a new row with an IntervalTreeActivityRepository and an EqualLinesManager and the given name.
    
    Parameters:
    
    name - the name of the row (e.g. "Building 1")
    
    Since:
    
    1.0
- Method Detail
  - getProperties
```
public final ObservableMap<Object,Object> getProperties()
```
    Returns an observable map of properties on this row.
    
    Returns:
    
    an observable map of properties on this row
  - hasProperties
```
public final boolean hasProperties()
```
    Tests if the row has properties.
    
    Returns:
    
    true if node has properties.
  - getParent
```
public final P getParent()
```
    The parent of this row. Each row can have only one parent. If a row has no parent, it represents a root in the tree model.
    
    Returns:
    
    the parent of this row, or null if the row has no parent.
    
    Since:
    
    1.0
  - parentProperty
```
public final ReadOnlyObjectProperty<P> parentProperty()
```
    Returns a read-only property used to store the parent row of this row.
    
    Returns:
    
    the property used for storing the parent row
    
    Since:
    
    1.0
  - getPath
```
public final Row[] getPath()
```
    Returns the path to this row, for example [ROOT, Parent1, Parent2, this].
    
    Returns:
    
    the path to this row
    
    Since:
    
    1.0
  - getChildren
```
public final ObservableList<C> getChildren()
```
    Returns the list of children of this row.
    
    Returns:
    
    the children
    
    Since:
    
    1.0
  - hasChildren
```
public boolean hasChildren(Predicate predicate)
```
    Checks whether the given row has any child rows (no matter how deep) that fulfill the given predicate.
    
    Parameters:
    
    predicate - the test to perform
    
    Returns:
    
    true if the row has any children where the predicate returns true
  - isLeaf
```
public boolean isLeaf()
```
    A row is a leaf in the tree table view on the left-hand side of the Gantt chart if it has no children. This method may of course be overridden by subclasses to support alternate means of defining how a row may be a leaf, but the general premise is the same: a leaf can not be expanded by the user, and as such will not show a disclosure node or respond to expansion requests.
    
    Returns:
    
    true if the row is a leaf (has no children rows)
    
    Since:
    
    1.3
  - leafProperty
```
public final ReadOnlyBooleanProperty leafProperty()
```
    Represents the TreeItem leaf property, which is true if the TreeItem has no children.
    
    Returns:
    
    a property for determining if the row is a leaf row
    
    Since:
    
    1.3
  - expandedProperty
```
public final BooleanProperty expandedProperty()
```
    The property used to store the expansion state of the row. The value of this property is needed for controlling the state of the tree items that will be created for the tree table view control on the left-hand side of the Gantt chart.
    
    Returns:
    
    the expanded property
    
    Since:
    
    1.0
  - setExpanded
```
public final void setExpanded(boolean expanded)
```
    Sets the value of the expandedProperty().
    
    Parameters:
    
    expanded - the new value of the expanded property
    
    Since:
    
    1.0
  - isExpanded
```
public final boolean isExpanded()
```
    Returns the value of the expandedProperty().
    
    Returns:
    
    true if the row is expanded
    
    Since:
    
    1.0
  - showingProperty
```
public final ReadOnlyBooleanProperty showingProperty()
```
    The property used to express whether a row is currently showing in the view or not. This information can be useful when deciding whether a row needs to update its activities or not, for example in a lazy-loading scenario.
    
    Returns:
    
    the showing property
    
    Since:
    
    1.0
  - isShowing
```
public final boolean isShowing()
```
    Returns the value of showingProperty().
    
    Returns:
    
    true if the row is currently showing in the UI
    
    Since:
    
    1.0
  - layoutProperty
```
public final ObjectProperty<Layout> layoutProperty()
```
    The property used to store the layout used for laying out the activities that are directly associated with the row (and not on an inner line).
    
    Returns:
    
    the row layer property
    
    Since:
    
    1.0
    
    See Also:
    
    getLineLayout(int)
  - getLayout
```
public final Layout getLayout()
```
    Returns the value of the layoutProperty().
    
    Returns:
    
    the layout of the row
    
    Since:
    
    1.0
  - setLayout
```
public final void setLayout(Layout layout)
```
    Sets the value of the layoutProperty().
    
    Parameters:
    
    layout - the new row layout
    
    Since:
    
    1.0
  - repositoryProperty
```
public final ObjectProperty<ActivityRepository<A>> repositoryProperty()
```
    The property used to store the activity repository for the row. A repository is used to lookup the activities for a given time interval that needs to be shown on the row.
    
    Returns:
    
    the repository property
    
    Since:
    
    1.0
  - getRepository
```
public final ActivityRepository<A> getRepository()
```
    Returns the value of the repositoryProperty().
    
    Returns:
    
    the activity repository of the row
    
    Since:
    
    1.0
  - setRepository
```
public final void setRepository(ActivityRepository<A> repository)
```
    Sets the value of the repositoryProperty().
    
    Parameters:
    
    repository - the new repository to use
    
    Since:
    
    1.0
  - getEarliestTimeUsed
```
public final Instant getEarliestTimeUsed()
```
    Returns the earliest time used by the row. This is a convenience method delegating to ActivityRepository.getEarliestTimeUsed().
    
    Returns:
    
    the earliest time used by the row / by the activities of the row / earliest start time of any activity on the row
    
    Since:
    
    getLatestTimeUsed(), 1.0
  - getLatestTimeUsed
```
public final Instant getLatestTimeUsed()
```
    Returns the latest time used by the row. This is a convenience method delegating to ActivityRepository.getLatestTimeUsed().
    
    Returns:
    
    the latest time used by the row / by the activities of the row / earliest start time of any activity on the row
    
    Since:
    
    getEarliestTimeUsed(), 1.0
  - nameProperty
```
public final StringProperty nameProperty()
```
    The property used to store the name of the row.
    
    Returns:
    
    the name property
    
    Since:
    
    1.0
  - getName
```
public final String getName()
```
    Returns the value of the nameProperty().
    
    Returns:
    
    the name of the row
    
    Since:
    
    1.0
  - setName
```
public final void setName(String name)
```
    Sets the value of the nameProperty().
    
    Parameters:
    
    name - the new name of the row
    
    Since:
    
    1.0
  - heightProperty
```
public final DoubleProperty heightProperty()
```
    The property used to store the height of the row.
    
    Returns:
    
    the row height property
    
    Since:
    
    1.0
  - setHeight
```
public final void setHeight(double height)
```
    Sets the value of the heightProperty().
    
    Parameters:
    
    height - the new height of the row
    
    Since:
    
    1.0
  - getHeight
```
public final double getHeight()
```
    Returns the value of the heightProperty().
    
    Returns:
    
    the value of the height property
    
    Since:
    
    1.0
  - minHeightProperty
```
public final DoubleProperty minHeightProperty()
```
    The property used to store the minimum height of the row. The user will not be able to resize the row to anything smaller than the value of this property.
    
    Returns:
    
    the minimum height property
    
    Since:
    
    1.0
  - setMinHeight
```
public final void setMinHeight(double height)
```
    Sets a new value for the minHeightProperty().
    
    Parameters:
    
    height - the new minimum height
    
    Since:
    
    1.0
  - getMinHeight
```
public final double getMinHeight()
```
    Returns the value of the minHeightProperty().
    
    Returns:
    
    the minimum height of the row
    
    Since:
    
    1.0
  - maxHeightProperty
```
public final DoubleProperty maxHeightProperty()
```
    The property used to store the maximum height of the row. The user will not be able to resize the row to anything larger than the value of this property.
    
    Returns:
    
    the maximum height property
    
    Since:
    
    1.0
  - setMaxHeight
```
public final void setMaxHeight(double height)
```
    Sets the value of the maxHeightProperty().
    
    Parameters:
    
    height - the maximum height of the row
    
    Since:
    
    1.0
  - getMaxHeight
```
public final double getMaxHeight()
```
    Returns the value of maxHeightProperty().
    
    Returns:
    
    the maximum height of the row
    
    Since:
    
    1.0
  - userObjectProperty
```
public final ObjectProperty<Object> userObjectProperty()
```
    The property used to store a row-specific user object.
    
    Returns:
    
    the user object property
    
    Since:
    
    1.0
  - getUserObject
```
public final Object getUserObject()
```
    Returns the value of userObjectProperty().
    
    Returns:
    
    the user object associated with this row
    
    Since:
    
    1.0
  - setUserObject
```
public final void setUserObject(Object obj)
```
    Sets the value of userObjectProperty().
    
    Parameters:
    
    obj - the new user object
    
    Since:
    
    1.0
  - linesManagerProperty
```
public final ObjectProperty<LinesManager<A>> linesManagerProperty()
```
    The property used to store the LinesManager instance for this row. The lines manager is used to control the layout of inner lines and the placement of activities on these lines.
    
    Returns:
    
    the lines manager property
    
    Since:
    
    1.0
  - getLinesManager
```
public final LinesManager<A> getLinesManager()
```
    Returns the value of linesManagerProperty().
    
    Returns:
    
    the lines manager for this row
    
    Since:
    
    1.0
  - setLinesManager
```
public final void setLinesManager(LinesManager<A> manager)
```
    Sets the value of linesManagerProperty().
    
    Parameters:
    
    manager - the new lines manager
    
    Since:
    
    1.0
  - zoneIdProperty
```
public final ObjectProperty<ZoneId> zoneIdProperty()
```
    The property used to store the zone ID for this row. Each row can be placed in a different time zone.
    
    Returns:
    
    the zone ID property
    
    Since:
    
    1.0
  - getZoneId
```
public final ZoneId getZoneId()
```
    Returns the value of the zoneIdProperty().
    
    Returns:
    
    the zone ID of this row
    
    Since:
    
    1.0
  - setZoneId
```
public final void setZoneId(ZoneId zoneId)
```
    Sets the value of the zoneIdProperty().
    
    Parameters:
    
    zoneId - the new zone ID for this row
    
    Since:
    
    1.0
  - getCalendars
```
public final ObservableList<Calendar<?>> getCalendars()
```
    Returns a list of calendars attached to this row. Calendars directly attached to a row can be used to visualize row-specific information, for example "resource availability".
    
    Returns:
    
    a list of row-specific calendars
    
    Since:
    
    1.0
  - lineCountProperty
```
public final IntegerProperty lineCountProperty()
```
    The property used to keep track of the number of inner lines shown by the row.
    
    Returns:
    
    the line count property
    
    Since:
    
    1.0
  - setLineCount
```
public final void setLineCount(int count)
```
    Sets the value of the lineCountProperty().
    
    Parameters:
    
    count - the new line count for the row
    
    Since:
    
    1.0
  - getLineCount
```
public final int getLineCount()
```
    Returns the value of the lineCountProperty().
    
    Returns:
    
    the line count of the row
    
    Since:
    
    1.0
  - addActivity
```
public final void addActivity(Layer layer,
                              A activity)
```
    Adds the given activity for the given layer to this row. This method delegates to MutableActivityRepository.addActivity(ActivityRef).
    
    Parameters:
    
    layer - the layer where the activity will be displayed
    
    activity - the activity that will be added
    
    Since:
    
    1.0
    
    See Also:
    
    MutableActivityRepository.addActivity(ActivityRef)
  - removeActivity
```
public final void removeActivity(Layer layer,
                                 A activity)
```
    Removes the given activity from the given layer from this row.
    
    Parameters:
    
    layer - the layer from which to remove the activity
    
    activity - the activity to remove
    
    Since:
    
    1.0
    
    See Also:
    
    MutableActivityRepository.removeActivity(ActivityRef)
  - clearActivities
```
public final void clearActivities()
```
    Removes all activities from the row.
    
    Since:
    
    1.0
    
    See Also:
    
    MutableActivityRepository.clearActivities()
  - clearActivities
```
public final void clearActivities(Layer layer)
```
    Removes all activities on the given layer from the row.
    
    Parameters:
    
    layer - the layer from which to remove all activities
    
    Since:
    
    1.0
    
    See Also:
    
    MutableActivityRepository.clearActivities(Layer)
  - getLineIndex
```
public final int getLineIndex(A activity)
```
    Returns the line index for the given activity. This is a convenience method delegating to LinesManager.getLineIndex(Activity).
    
    Parameters:
    
    activity - the activity for which to return a line index
    
    Returns:
    
    the line index for the given activity
    
    Since:
    
    1.0
  - getLineLocation
```
public final double getLineLocation(int lineIndex)
```
    Returns the location of the given inner line. The value returned is usually between 0 and getHeight().
    
    Parameters:
    
    lineIndex - the index of the line for which to return a location
    
    Returns:
    
    the line location y-coordinate
    
    Since:
    
    1.0
  - getLineHeight
```
public final double getLineHeight(int lineIndex)
```
    Returns the height of the given inner line. The value returned is usually between 0 and getHeight().
    
    Parameters:
    
    lineIndex - the index of the line for which to return a height
    
    Returns:
    
    the height of the line
    
    Since:
    
    1.0
  - getLineLayout
```
public final Layout getLineLayout(int lineIndex)
```
    Returns a line-specific layout for the given line.
    
    Parameters:
    
    lineIndex - the index of the line
    
    Returns:
    
    the line layout
    
    Since:
    
    1.0
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class Row<P extends Row<?,​?,​?>,​C extends Row<?,​?,​?>,​A extends Activity>

Code Example

Lazy Loading

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_ROW_HEIGHT

Constructor Detail

Row

Row

Method Detail

getProperties

hasProperties

getParent

parentProperty

getPath

getChildren

hasChildren

isLeaf

leafProperty

expandedProperty

setExpanded

isExpanded

showingProperty

isShowing

layoutProperty

getLayout

setLayout

repositoryProperty

getRepository

setRepository

getEarliestTimeUsed

getLatestTimeUsed

nameProperty

getName

setName

heightProperty

setHeight

getHeight

minHeightProperty

setMinHeight

getMinHeight

maxHeightProperty

setMaxHeight

getMaxHeight

userObjectProperty

getUserObject

setUserObject

linesManagerProperty

getLinesManager

setLinesManager

zoneIdProperty

getZoneId

setZoneId

getCalendars

lineCountProperty

setLineCount

getLineCount

addActivity

removeActivity

clearActivities

clearActivities

getLineIndex

getLineLocation

getLineHeight

getLineLayout

toString

Class Row<P extends Row<?,?,?>,C extends Row<?,?,?>,A extends Activity>