AWT/Swing merge from GNU Classpath.

From-SVN: r56147

1 files changed, 181 insertions, 0 deletions

diff --git a/libjava/javax/swing/DefaultListSelectionModel.java b/libjava/javax/swing/DefaultListSelectionModel.java
new file mode 100644
index 0000000..64ae505
--- /dev/null
+++ b/libjava/javax/swing/DefaultListSelectionModel.java
@@ -0,0 +1,181 @@
+/* DefaultListSelectionModel.java -- 
+   Copyright (C) 2002 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.swing;
+
+import javax.swing.event.*;
+import java.util.*;
+
+public class DefaultListSelectionModel implements ListSelectionModel
+{
+    int mode = SINGLE_SELECTION;
+
+    Vector sel = new Vector();
+
+    Vector listeners;
+
+    Vector get_listeners()
+    {
+	if (listeners == null)
+	    listeners = new Vector();
+	return listeners;
+    }
+    
+
+    public void addListSelectionListener(ListSelectionListener listener)
+    {
+	get_listeners().addElement(listener);
+    }
+
+    public void removeListSelectionListener(ListSelectionListener listener)
+    {
+	get_listeners().removeElement(listener);
+    }
+    
+    class Range
+    {
+	int i0, i1;
+
+	Range(int a, int b)
+	{
+	    if (a > b)
+		{
+		    i0 = b;
+		    i1 = a;
+		}
+	    else
+		{
+		    i0 = a; 
+		    i1 = b;
+		}
+	}
+    }
+
+    
+    public int getMinSelectionIndex()
+    {
+	if (isSelectionEmpty())
+	    return -1;
+	
+	boolean first = true;
+	int min = -1;
+	for (int i=0;i<sel.size();i++)
+	    {
+		Range r = (Range) sel.get(i);
+
+		if (first)
+		    {
+			min = r.i0;
+			first = false;
+		    }	
+		else
+		    {
+			if (r.i0 > min)
+			    {
+				min = r.i0;
+			    }
+		    }
+	    }
+	return min;
+    }
+
+    public int getMaxSelectionIndex()
+    {
+	if (isSelectionEmpty())
+	    return -1;
+
+	boolean first = true;
+	int max = -1;
+	for (int i=1;i<sel.size();i++)
+	    {
+		Range r = (Range) sel.get(i);
+		
+		if (first)
+		    {
+			max = r.i1;
+		    }
+		else
+		    {
+			if (r.i1 > max)
+			    {
+				max = r.i1;
+			    }
+		    }
+	    }
+	return max;
+    }
+
+    public boolean isSelectedIndex(int a)
+    {
+	for (int i=0;i<sel.size();i++)
+	    {
+		Range r = (Range) sel.get(i);
+		if (r.i0 <= a &&
+		    r.i1 >= a)
+		    {
+			return true;
+		    }
+	    }
+	return false;
+    }
+
+
+    public int getSelectionMode()
+    { return mode; }
+    public void setSelectionMode(int a)
+    {	mode = a;    }
+
+    boolean isSelectionEmpty() 
+    {
+	return sel.size() == 0;
+    }
+
+    public void clearSelection()
+    {
+	sel.removeAllElements();
+    }
+
+    public void setSelectionInterval(int index0, int index1) 
+    {
+	if (mode == SINGLE_SELECTION)
+	    {
+		sel.removeAllElements();
+	    }
+
+	sel.addElement(new Range(index0, index1));
+    }
+}