Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/ui/table/TableModelComparator.java @ 7440:79f492f184d0
8004982: JDK8 source with GPL header errors
Reviewed-by: ohair
author | katleman |
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date | Thu, 20 Dec 2012 16:24:51 -0800 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.ui.table; import java.util.*; import javax.swing.table.TableModel; import javax.swing.event.TableModelEvent; /** * A comparator which compares rows in a table model */ public abstract class TableModelComparator implements Comparator { private boolean ascending; protected TableModel model; private int[] columns; public TableModelComparator(TableModel model) { this.model = model; // XXX - Should actually listen for column changes and resize columns = new int[model.getColumnCount()]; columns[0] = -1; } /** * Add the column to the sort criteria */ public void addColumn(int column) { // Shift columns in the array int[] tempArray = new int[model.getColumnCount()]; System.arraycopy(columns, 1, tempArray, 0, columns.length - 1); columns = tempArray; columns[0] = column; } /** * Get the last column that was sorted */ public int getColumn() { return columns[0]; } public void setAscending(boolean ascending) { this.ascending = ascending; } public boolean isAscending() { return ascending; } /** * Implementation of the comparator method. A comparison is * made for rows. */ public int compare(Object row1, Object row2) { for (int i = 0; i < columns.length; i++) { Object o1 = getValueForColumn(row1, columns[i]); Object o2 = getValueForColumn(row2, columns[i]); // If both values are null, return 0. if (o1 == null && o2 == null) { return 0; } else if (o1 == null) { // Define null less than everything. return -1; } else if (o2 == null) { return 1; } int result = 0; if (o1 instanceof Comparable) { Comparable c1 = (Comparable)o1; Comparable c2 = (Comparable)o2; result = c1.compareTo(c2); } // XXX Should have some sort of provision for determininte // if there is another way of comparing the objects. // Perhaps we should add the requirement that all table // values be Compabable. if (result != 0) { return ascending ? result : -result; } } return 0; } /** * Returns the value for the comparing object for the * column. * * @param obj Row object that was passed into Comparator. * @param column the column to retrieve */ public abstract Object getValueForColumn(Object obj, int column); }