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org.greenstone.gatherer.gui.table
Class GTableModel  

java.lang.Object
  javax.swing.table.AbstractTableModel
      org.greenstone.gatherer.gui.table.GTableModel

All Implemented Interfaces:

org.greenstone.gatherer.msm.MSMListener, java.io.Serializable, javax.swing.table.TableModel

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public class GTableModel

extends javax.swing.table.AbstractTableModel

implements org.greenstone.gatherer.msm.MSMListener

Provides the model for a GTable component, filling it with metadata values for the choosen files or folders. The model also provides several different view of this data; assigned folder metadata, assigned file metadata, all assigned metadata, unassigned metadata, and all metadata. It also differentiates between metadata that is common to all of the files or folders, and that which isn't. The building of the actual model is done on a separate thread so that the gui remains responsive, and the gui is intermitantly updated by this thread. Updating of the model is triggered by events recieved from the metadata set manager in terms of new or obsolete metadata. A new model is rebuilt whenever the user selects a different group of files or folders.

Version:

2.3b

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Nested Class Summary
private  class	GTableModel.ModelBuilder
private  class	GTableModel.SelectionTask           Little utility class for selecting a row in the table, on the AWT thread.

 

Field Summary
private  GTableModel.ModelBuilder	builder
private static java.lang.String[]	COLUMN_NAMES
private  java.util.ArrayList	current_metadata           The source for the data currently shown in the table.
private  org.greenstone.gatherer.file.FileNode[]	file_nodes           The file nodes this model is built upon.
private  javax.swing.JTable	table           The table this model is being displayed in.

 

Fields inherited from class javax.swing.table.AbstractTableModel

listenerList

 

Constructor Summary

GTableModel(javax.swing.JTable table)

GTableModel(javax.swing.JTable table, org.greenstone.gatherer.file.FileNode[] file_nodes)

 

Method Summary
void	elementChanged(org.greenstone.gatherer.msm.MSMEvent event)           Called whenever an element in a set is added, edited or removed from the metadata set manager.
int	getColumnCount()           Returns the number of columns in this table.
java.lang.String	getColumnName(int col)           Retrieves the name of the specified column.
org.greenstone.gatherer.msm.Metadata	getMetadataAtRow(int row)
int	getRowCount()           Returns the number of rows in this table.
java.lang.Object	getValueAt(int row, int col)           Returns the cell value at a given row and column as an Object.
boolean	isBuildingComplete()
boolean	isCommon(int row)           Determine if the given metadata is common to all selected file nodes given the context of the current view.
boolean	isCommon(org.greenstone.gatherer.msm.Metadata entry)           Determine if the given metadata is common to all selected file nodes given the context of the current view.
void	metadataChanged(org.greenstone.gatherer.msm.MSMEvent event)           Whenever there is a metadata change we must determine if there are any changes to our various lists of metadata, and also if there is any need to refresh the table currently being viewed.
private  void	rebuildModel()
void	selectClosestMetadataWhenBuildingComplete(org.greenstone.gatherer.msm.Metadata metadatum)
void	selectMetadataWhenBuildingComplete(org.greenstone.gatherer.msm.Metadata metadatum)
void	setChanged(org.greenstone.gatherer.msm.MSMEvent event)           Called whenever a set is added or removed from the metadata set manager.
void	valueChanged(org.greenstone.gatherer.msm.MSMEvent event)           Called when the value tree of a certain element has changed significantly but, although we display metadata values, we only care about those coming through metadataChanged() events.

 

Methods inherited from class javax.swing.table.AbstractTableModel

addTableModelListener, findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getColumnClass, getListeners, getTableModelListeners, isCellEditable, removeTableModelListener, setValueAt

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

current_metadata

private java.util.ArrayList current_metadata

The source for the data currently shown in the table. May be any of the other three metadata lists, or the union of all of them.

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file_nodes

private org.greenstone.gatherer.file.FileNode[] file_nodes

The file nodes this model is built upon.

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table

private javax.swing.JTable table

The table this model is being displayed in.

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builder

private GTableModel.ModelBuilder builder

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COLUMN_NAMES

private static final java.lang.String[] COLUMN_NAMES

Constructor Detail

GTableModel

public GTableModel(javax.swing.JTable table)

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GTableModel

public GTableModel(javax.swing.JTable table,
                   org.greenstone.gatherer.file.FileNode[] file_nodes)

Method Detail

getColumnCount

public int getColumnCount()

Returns the number of columns in this table.

Specified by:

getColumnCount in interface javax.swing.table.TableModel

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getColumnName

public java.lang.String getColumnName(int col)

Retrieves the name of the specified column.

Specified by:

getColumnName in interface javax.swing.table.TableModel

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getRowCount

public int getRowCount()

Returns the number of rows in this table.

Specified by:

getRowCount in interface javax.swing.table.TableModel

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getValueAt

public java.lang.Object getValueAt(int row,
                                   int col)

Returns the cell value at a given row and column as an Object.

Specified by:

getValueAt in interface javax.swing.table.TableModel

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getMetadataAtRow

public org.greenstone.gatherer.msm.Metadata getMetadataAtRow(int row)

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selectMetadataWhenBuildingComplete

public void selectMetadataWhenBuildingComplete(org.greenstone.gatherer.msm.Metadata metadatum)

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selectClosestMetadataWhenBuildingComplete

public void selectClosestMetadataWhenBuildingComplete(org.greenstone.gatherer.msm.Metadata metadatum)

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elementChanged

public void elementChanged(org.greenstone.gatherer.msm.MSMEvent event)

Called whenever an element in a set is added, edited or removed from the metadata set manager. We listen for this just incase the name of one of the elements currently shown changes. After that the table will be up to date, as the element references are otherwise live.

Specified by:

elementChanged in interface org.greenstone.gatherer.msm.MSMListener

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metadataChanged

public void metadataChanged(org.greenstone.gatherer.msm.MSMEvent event)

Whenever there is a metadata change we must determine if there are any changes to our various lists of metadata, and also if there is any need to refresh the table currently being viewed.

Specified by:

metadataChanged in interface org.greenstone.gatherer.msm.MSMListener

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setChanged

public void setChanged(org.greenstone.gatherer.msm.MSMEvent event)

Called whenever a set is added or removed from the metadata set manager.

Specified by:

setChanged in interface org.greenstone.gatherer.msm.MSMListener

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valueChanged

public void valueChanged(org.greenstone.gatherer.msm.MSMEvent event)

Called when the value tree of a certain element has changed significantly but, although we display metadata values, we only care about those coming through metadataChanged() events.

Specified by:

valueChanged in interface org.greenstone.gatherer.msm.MSMListener

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rebuildModel

private void rebuildModel()

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isCommon

public boolean isCommon(org.greenstone.gatherer.msm.Metadata entry)

Determine if the given metadata is common to all selected file nodes given the context of the current view.

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isCommon

public boolean isCommon(int row)

Determine if the given metadata is common to all selected file nodes given the context of the current view.

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isBuildingComplete

public boolean isBuildingComplete()

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Home >> All >> org >> greenstone >> gatherer >> gui >> [ table overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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