Class DefaultHierarchicalChartModel

java.lang.Object
com.arbergashi.charts.model.DefaultHierarchicalChartModel
All Implemented Interfaces:
ChartModel, HierarchicalChartModel<DefaultHierarchicalChartModel.DefaultNode>
public class DefaultHierarchicalChartModel extends Object implements HierarchicalChartModel<DefaultHierarchicalChartModel.DefaultNode>
Default implementation for a hierarchical chart model. It uses a generic Node class to build the tree structure.
Since:
2025-06-01
Version:
1.0.0
Author:
Arber Gashi

  • Constructor Details

  • Method Details

    • getRootNode

      public DefaultHierarchicalChartModel.DefaultNode getRootNode()
      Description copied from interface: HierarchicalChartModel
      Returns the root node of the hierarchy.
      Specified by:
      getRootNode in interface HierarchicalChartModel<DefaultHierarchicalChartModel.DefaultNode>
      Returns:
      The root node.

    • getName

      public String getName()
      Description copied from interface: ChartModel
      Returns the title of the data series.
      Specified by:
      getName in interface ChartModel
      Returns:
      Name of the series

    • setName

      public void setName(String name)

    • getColor

      public Color getColor()
      Description copied from interface: ChartModel
      Optional visual color for a series; default is null.
      Specified by:
      getColor in interface ChartModel

    • setColor

      public void setColor(Color color)
      Description copied from interface: ChartModel
      Optional setter for a visual color; default no-op.
      Specified by:
      setColor in interface ChartModel

    • getUpdateStamp

      public long getUpdateStamp()
      Description copied from interface: ChartModel
      Optional timestamp for model updates; default 0 for simple models.
      Specified by:
      getUpdateStamp in interface ChartModel

    • getPointCount

      public int getPointCount()
      Description copied from interface: ChartModel
      Returns the number of data points.
      Specified by:
      getPointCount in interface ChartModel
      Returns:
      count

    • getX

      public double getX(int index)
      Description copied from interface: ChartModel
      Returns the X value at the given index.
      Specified by:
      getX in interface ChartModel
      Parameters:
      index - data point index
      Returns:
      X value or 0.0 if out of range

    • getY

      public double getY(int index)
      Description copied from interface: ChartModel
      Returns the Y value at the given index.
      Specified by:
      getY in interface ChartModel
      Parameters:
      index - data point index
      Returns:
      Y value or 0.0 if out of range

    • addPoint

      public void addPoint(ChartPoint point)

    • addPoints

      public void addPoints(List<ChartPoint> points)

    • setPoints

      public void setPoints(List<ChartPoint> points)

    • clear

      public void clear()

    • getXData

      public double[] getXData()
      Description copied from interface: ChartModel
      Direct access to the X-coordinate array.

      Framework contract: Implementations may return either:

      Consumers must never assume getXData().length == getPointCount(). Always bound iteration by the logical size:

      int n = Math.min(model.getPointCount(), model.getXData().length);

      Performance note: If you need strict size and immutability semantics, use a model implementation that returns copies (e.g. DefaultChartModel).

      Specified by:
      getXData in interface ChartModel
      Returns:
      X values array (may be larger than logical size)

    • getYData

      public double[] getYData()
      Description copied from interface: ChartModel
      Direct access to the Y-coordinate array.

      Warning: For performance reasons, the internal array is often returned. Do not modify!

      Specified by:
      getYData in interface ChartModel
      Returns:
      double array of Y values

    • addChangeListener

      public void addChangeListener(ChartModel.ChartModelListener listener)
      Description copied from interface: ChartModel
      Registers a listener for data changes.
      Specified by:
      addChangeListener in interface ChartModel
      Parameters:
      listener - The listener

    • removeChangeListener

      public void removeChangeListener(ChartModel.ChartModelListener listener)
      Description copied from interface: ChartModel
      Removes a listener.
      Specified by:
      removeChangeListener in interface ChartModel
      Parameters:
      listener - The listener