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/*
* Created on 25.02.2011
*
*/
package org.jdesktop.swingx.table;
import java.awt.Component;
import java.util.Collections;
import java.util.List;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;
/**
* Collection of utility methods for J/X/Table.
*
* @author Jeanette Winzenburg, Berlin
*/
public class TableUtilities {
/**
* Returns a boolean indication whether the event represents a
* dataChanged type.
*
* @param e the event to examine.
* @return true if the event is of type dataChanged, false else.
*/
public static boolean isDataChanged(TableModelEvent e) {
if (e == null)
return false;
return e.getType() == TableModelEvent.UPDATE && e.getFirstRow() == 0
&& e.getLastRow() == Integer.MAX_VALUE;
}
/**
* Returns a boolean indication whether the event represents a
* update type.
*
* @param e the event to examine.
* @return true if the event is a true update, false
* otherwise.
*/
public static boolean isUpdate(TableModelEvent e) {
if (isStructureChanged(e))
return false;
return e.getType() == TableModelEvent.UPDATE
&& e.getLastRow() < Integer.MAX_VALUE;
}
/**
* Returns a boolean indication whether the event represents a
* insert type.
*
* @param e the event to examine
* @return true if the event is of type insert, false otherwise.
*/
public static boolean isInsert(TableModelEvent e) {
if (e == null) return false;
return TableModelEvent.INSERT == e.getType();
}
/**
* Returns a boolean indication whether the event represents a
* remove type.
*
* @param e the event to examine
* @return true if the event is of type remove, false otherwise.
*/
public static boolean isDelete(TableModelEvent e) {
if (e == null) return false;
return TableModelEvent.DELETE == e.getType();
}
/**
* Returns a boolean indication whether the event represents a
* structureChanged type.
*
* @param e the event to examine.
* @return true if the event is of type structureChanged or null, false
* else.
*/
public static boolean isStructureChanged(TableModelEvent e) {
return e == null || e.getFirstRow() == TableModelEvent.HEADER_ROW;
}
/**
* Returns the preferred height for the given row. It loops
* across all visible columns and returns the maximal pref height of
* the rendering component. Falls back to the table's base rowheight, i
* f there are no columns or the renderers
* max is zeor.
*
* @param table the table which provides the renderers, must not be null
* @param row the index of the row in view coordinates
* @return the preferred row height of
* @throws NullPointerException if table is null.
* @throws IndexOutOfBoundsException if the row is not a valid row index
*/
public static int getPreferredRowHeight(JTable table, int row) {
int pref = 0;
for (int column = 0; column < table.getColumnCount(); column++) {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component comp = table.prepareRenderer(renderer, row, column);
pref = Math.max(pref, comp.getPreferredSize().height);
}
return pref > 0 ? pref : table.getRowHeight();
}
/**
*
* @param table the table which provides the renderers, must not be null
* @param row the index of the row in view coordinates
* @throws NullPointerException if table is null.
* @throws IndexOutOfBoundsException if the row is not a valid row index
*/
public static void setPreferredRowHeight(JTable table, int row) {
int prefHeight = getPreferredRowHeight(table, row);
table.setRowHeight(row, prefHeight);
}
/**
* Sets preferred row heights for all visible rows.
*
* @param table the table to set row heights to
* @throws NullPointerException if no table installed.
*/
public static void setPreferredRowHeights(JTable table) {
// care about visible rows only
for (int row = 0; row < table.getRowCount(); row++) {
setPreferredRowHeight(table, row);
}
}
/**
* Returns an array containing the ordinals of the given values of an Enum.
*
* Convience for clients which define TableColumns as Enums (Issue #1304-swingx).
*
* @param values the enums to map to its ordinals
* @return an array of ordinals, guaranteed to be not null
*/
public static int[] ordinalsOf(Enum... values) {
int[] cols = new int[values.length];
for (int i = 0; i < values.length; i++) {
cols[i] = values[i].ordinal();
}
return cols;
}
/**
* Removes all columns of the given column model. Includes hidden
* columns as indicated by the includesHidden flag, the flag has no
* effect if the model is not of type TableColumnModelExt.
*
* @param model the column model to remove all columns from.
* @param includeHidden indicates whether hidden columns should be
* removed as well, has no effect if model is not of type TableColumnModelExt.
*/
/*
* Stand-in instead of fixing of issue http://java.net/jira/browse/SWINGX-1407
*/
public static void clear(TableColumnModel model, boolean includeHidden) {
if (model instanceof TableColumnModelExt) {
clear(model, ((TableColumnModelExt) model).getColumns(includeHidden));
} else {
clear(model, Collections.list(model.getColumns()));
}
}
private static void clear(TableColumnModel model, List columns) {
for (TableColumn tableColumn : columns) {
model.removeColumn(tableColumn);
}
}
private TableUtilities() {}
}