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Class jclass.chart.ChartDataModelUpdate

java.lang.Object
   |
   +----jclass.chart.ChartDataModelUpdate

public class ChartDataModelUpdate
extends Object

An instance of ChartDataModelUpdate is passed from the ChartDataModel to each observable whenever a change occurs in the ChartDataModel. Note that the message type can be one of the static types enumerated below.

ADD_COLUMN: Enum value indicated a column of data values has been added.
ADD_ROW: Enum value indicated a row of data values has been added.
ADD_VALUE: Enum value indicated a single data value has been added.
CHANGE_COLUMN: Enum value indicated a column of data values has changed.
CHANGE_POINT_LABEL: Enum value indicating that a point label has changed.
CHANGE_ROW: Enum value indicated a row of data values has changed.
CHANGE_SERIES_LABEL: Enum value indicating that a series label has changed.
CHANGE_SERIES_NAME: Enum value indicating that a series name has changed.
CHANGE_VALUE: Enum value indicated a single data value has changed.
column: Column impacted by message (if applicable).
message: Message send from the data to Chart.
REMOVE_COLUMN: Enum value indicated a column of data values has been removed.
REMOVE_ROW: Enum value indicated a row of data values has been removed.
REMOVE_VALUE: Enum value indicated a single data value has been removed.
RESET: Enum value indicating that the data has changed significantly.
row: Row impacted by message (if applicable).

ChartDataModelUpdate(int, int, int): Constructor used by ChartDataModel subclasses to inform views of data changes.

message

  public int message

Message send from the data to Chart. One of the enum values specified in this class

row

  public int row

Row impacted by message (if applicable).

column

  public int column

Column impacted by message (if applicable).

CHANGE_VALUE

  public final static int CHANGE_VALUE

Enum value indicated a single data value has changed. The "row" and "column" members will contain the index for the value that has changed.

ADD_VALUE

  public final static int ADD_VALUE

Enum value indicated a single data value has been added. The "row" and "column" members will contain the index for the value that has been added.

REMOVE_VALUE

  public final static int REMOVE_VALUE

Enum value indicated a single data value has been removed. The "row" and "column" members will contain the index for the value that has been removed.

CHANGE_ROW

  public final static int CHANGE_ROW

Enum value indicated a row of data values has changed. The "row" member indicates the index of the row that has been changed.

ADD_ROW

  public final static int ADD_ROW

Enum value indicated a row of data values has been added. The "row" member indicates the index of the row that has been added.

REMOVE_ROW

  public final static int REMOVE_ROW

Enum value indicated a row of data values has been removed. The "row" member indicates the index of the row that has been removed.

CHANGE_COLUMN

  public final static int CHANGE_COLUMN

Enum value indicated a column of data values has changed. The "column" member indicates the index of the column that has been changed.

ADD_COLUMN

  public final static int ADD_COLUMN

Enum value indicated a column of data values has been added. The "column" member indicates the index of the column that has been changed.

REMOVE_COLUMN

  public final static int REMOVE_COLUMN

Enum value indicated a column of data values has been removed. The "column" member indicates the index of the column that has been removed.

CHANGE_POINT_LABEL

  public final static int CHANGE_POINT_LABEL

Enum value indicating that a point label has changed. "row" and "column" are used to specify the index of the point label that has changed.

CHANGE_SERIES_NAME

  public final static int CHANGE_SERIES_NAME

Enum value indicating that a series name has changed. "row" indicates the series number.

CHANGE_SERIES_LABEL

  public final static int CHANGE_SERIES_LABEL

Enum value indicating that a series label has changed. "row" indicates the series number.

RESET

  public final static int RESET

Enum value indicating that the data has changed significantly. When a RESET message is received, Chart will re-read all the data.

ChartDataModelUpdate

  public ChartDataModelUpdate(int message,
                              int row,
                              int column)

Constructor used by ChartDataModel subclasses to inform views of data changes.

Parameters:: message - message to pass to the views; row - row affected by the change; column - column affected by the change

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