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-/* DefaultListModel.java --
- Copyright (C) 2002, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 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 java.util.Enumeration;
-import java.util.Vector;
-
-/**
- * This is a default subclass of the {@link AbstractListModel}, used by
- * {@link javax.swing.JList} and similar objects as the model of a list of
- * values. The implementation is based on an underlying {@link
- * java.util.Vector}.
- *
- * @author Andrew Selkirk
- * @author Graydon Hoare (graydon@redhat.com)
- */
-
-public class DefaultListModel extends AbstractListModel
-{
- private static final long serialVersionUID = 2315945659722172272L;
-
- /**
- * The vector of elements in this list model.
- */
- private Vector elements = new Vector();
-
- /**
- * Gets an element of the list at the provided index.
- *
- * @param index The index of the element to get
- *
- * @return The object at the given index
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public Object elementAt(int index)
- {
- return elements.elementAt(index);
- }
-
- /**
- * Convert the list to a string representation.
- *
- * @return A string representation of the list
- */
- public String toString()
- {
- return elements.toString();
- }
-
- /**
- * Gets the first index of a particular element in the list.
- *
- * @param element The element to search for
- *
- * @return The first index in the list at which an object
- * <code>obj</code> exists such that <code>obj.equals(element)</code> is
- * <code>true</code>; if no such object exists, the method returns
- * <code>-1</code>
- */
- public int indexOf(Object element)
- {
- return elements.indexOf(element);
- }
-
- /**
- * Gets the first index of a particular element in a list which occurs
- * <em>at or after</em> a particular index.
- *
- * @param element The element to search for
- * @param startIndex The index to begin searching at
- *
- * @return The first index in the list, greater than or equal to
- * <code>startIndex</code>, at which an object <code>obj</code> exists
- * such that <code>obj.equals(element)</code> is <code>true</code>; if no
- * such object exists, the method returns <code>-1</code>
- */
- public int indexOf(Object element, int startIndex)
- {
- return elements.indexOf(element, startIndex);
- }
-
- /**
- * Gets the last index of a particular element in the list.
- *
- * @param element The element to search for
- *
- * @return The last index in the list at which an object
- * <code>obj</code> exists such that <code>obj.equals(element)</code> is
- * <code>true</code>; if no such object exists, the method returns
- * <code>-1</code>
- */
- public int lastIndexOf(Object element)
- {
- return elements.lastIndexOf(element);
- }
-
- /**
- * Gets the last index of a particular element in a list which occurs
- * <em>at or before</em> a particular index.
- *
- * @param element The element to search for
- * @param endIndex The index to finish searching at
- *
- * @return The last index in the list, less than to or equal to
- * <code>endIndexIndex</code>, at which an object <code>obj</code> exists
- * such that <code>obj.equals(element)</code> is <code>true</code>; if no
- * such object exists, the method returns <code>-1</code>
- */
- public int lastIndexOf(Object element, int endIndex)
- {
- return elements.lastIndexOf(element, endIndex);
- }
-
- /**
- * Gets the list element at a particular index.
- *
- * @param index The index to get the list value at
- *
- * @return The list value at the provided index
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public Object get(int index)
- {
- return elements.get(index);
- }
-
- /**
- * Sets the list element at a particular index.
- *
- * @param index The list index at which to set a value
- * @param element The value to set at the specified index
- *
- * @return The value previously held at the specified index
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public Object set(int index, Object element)
- {
- Object result;
- result = elements.set(index, element);
- fireContentsChanged(this, index, index);
- return result;
- }
-
- /**
- * Inserts an element at a particular index in the list. Each element at
- * index <code>i >= index</code> is shifted to position <code>i+1</code>.
- * If <code>index</code> is equal to <code>size()</code>, this is
- * equivalent to appending an element to the array. Any
- * <code>index</code> greater than <code>size()</code> is illegal.
- *
- * @param index The index to insert the element at
- * @param element The element to insert at the index
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds <code>[0, size()]</code>
- */
- public void add(int index, Object element)
- {
- elements.add(index, element);
- fireIntervalAdded(this, index, index);
- }
-
- /**
- * Inserts an element at the end of the list. This is equivalent to
- * calling <code>list.add(list.size(), element)</code>.
- *
- * @param element The element to add to the list
- */
- public void addElement(Object element)
- {
- int s = elements.size();
- elements.add(element);
- fireIntervalAdded(this, s, s);
- }
-
- /**
- * Gets the number of elements in the list.
- *
- * @return The number of elements in the list
- */
- public int size()
- {
- return elements.size();
- }
-
- /**
- * Gets an array containing the elements of the list.
- *
- * @return An array of the objects in the list, in the order they occur
- * in the list
- */
- public Object[] toArray()
- {
- return elements.toArray();
- }
-
- /**
- * Determines whether a particular element is a member of the list.
- *
- * @param element The element to search for
- *
- * @return <code>true</code> if <code>element</code> is a member of the
- * list, otherwise <code>false</code>
- */
- public boolean contains(Object element)
- {
- return elements.contains(element);
- }
-
- /**
- * Copies the list into a provided array. The provided array must be at
- * least as large as the list.
- *
- * @param array The array to copy the list into
- *
- * @throws IndexOutOfBoundsException if the array is too small to hold the
- * elements of the list
- */
- public void copyInto(Object[] array)
- {
- elements.copyInto(array);
- }
-
- /**
- * Erases all the elements of the list, setting the list's size to 0.
- */
- public void clear()
- {
- int s = elements.size();
- if (s > 0)
- {
- elements.clear();
- fireIntervalRemoved(this, 0, s - 1);
- }
- }
-
- /**
- * Removes the element at a particular index from the list.
- *
- * @param index The index of the element to remove
- *
- * @return The value at the index, which has been removed from the list
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public Object remove(int index)
- {
- Object result;
- result = elements.remove(index);
- fireIntervalRemoved(this, index, index);
- return result;
- }
-
- /**
- * Determines whether the list is empty.
- *
- * @return <code>true</code> if the list is empty, otherwise
- * <code>false</code>
- */
- public boolean isEmpty()
- {
- return elements.isEmpty();
- }
-
- /**
- * Returns an {@link java.util.Enumeration} over the elements of the list.
- *
- * @return A new enumeration which iterates over the list
- */
- public Enumeration elements()
- {
- return elements.elements();
- }
-
- /**
- * Sets the capacity of the list to be equal to its size. The list's capacity
- * is the number of elements it can hold before it needs to be reallocated.
- * The list's size is the number of elements it currently holds.
- */
- public void trimToSize()
- {
- elements.trimToSize();
- }
-
- /**
- * Ensures that the list's capacity is at least equal to
- * <code>size</code>. The list's capacity is the number of elements it
- * can hold before it needs to be reallocated.
- *
- * @param size The capacity to ensure the list can hold
- */
- public void ensureCapacity(int size)
- {
- elements.ensureCapacity(size);
- }
-
- /**
- * Sets the size of the list to a particular value. If the specified size
- * is greater than the current size, the values at the excess list
- * indices are set to <code>null</code>. If the specified size is less
- * than the current size, the excess elements are removed from the list.
- *
- * @param size The new size to set the list to
- */
- public void setSize(int size)
- {
- int oldSize = elements.size();
- elements.setSize(size);
- if (oldSize < size)
- {
- fireIntervalAdded(this, oldSize, size - 1);
- }
- else if (oldSize > size)
- {
- this.fireIntervalRemoved(this, size, oldSize - 1);
- }
- }
-
- /**
- * Gets the capacity of the list. The list's capacity is the number of
- * elements it can hold before it needs to be reallocated.
- *
- * @return The capacity of the list
- */
- public int capacity()
- {
- return elements.capacity();
- }
-
- /**
- * Gets the first element in the list.
- *
- * @return The first element in the list
- */
- public Object firstElement()
- {
- return elements.firstElement();
- }
-
- /**
- * Gets the last element in the list.
- *
- * @return The last element in the list
- */
- public Object lastElement()
- {
- return elements.lastElement();
- }
-
- /**
- * Sets the list element at a particular index.
- *
- * @param element The value to set at the specified index
- * @param index The list index at which to set a value
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public void setElementAt(Object element, int index)
- {
- elements.setElementAt(element, index);
- fireContentsChanged(this, index, index);
- }
-
- /**
- * Removes the element at a particular index from the list.
- *
- * @param index The index of the element to remove
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public void removeElementAt(int index)
- {
- elements.remove(index);
- fireIntervalRemoved(this, index, index);
- }
-
- /**
- * Inserts an element at a particular index in the list. Each element at
- * index <code>i >= index</code> is shifted to position <code>i+1</code>.
- * If <code>index</code> is equal to <code>size()</code>, this is
- * equivalent to appending an element to the array. Any
- * <code>index</code> greater than <code>size()</code> is illegal.
- *
- * @param element The element to insert at the index
- * @param index The index to insert the element at
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds <code>[0, size()]</code>
- */
- public void insertElementAt(Object element, int index)
- {
- elements.insertElementAt(element, index);
- fireIntervalAdded(this, index, index);
- }
-
- /**
- * Removes the first occurrence of a particular element in the list. If the
- * element does not exist in the list, nothing happens.
- *
- * @param element The element to remove
- *
- * @return <code>true</code> if the element existed in the list (and was
- * removed), <code>false</code> otherwise
- */
- public boolean removeElement(Object element)
- {
- int index;
- index = elements.indexOf(element);
- if (index != -1)
- {
- elements.remove(index);
- fireIntervalRemoved(this, index, index);
- return true;
- }
- return false;
- }
-
- /**
- * Remove all elements in the list.
- */
- public void removeAllElements()
- {
- int size;
- size = size();
- if (size > 0)
- {
- elements.clear();
- fireIntervalRemoved(this, 0, size - 1);
- }
- }
-
- /**
- * Remove all elements between <code>startIndex</code> and
- * <code>endIndex</code> inclusive.
- *
- * @param startIndex The first index in the range to remove
- * @param endIndex The last index in the range to remove
- *
- * @throws ArrayIndexOutOfBoundsException if either index is outside the
- * valid range of indices for this list <code>[0, size())</code>
- * @throws IllegalArgumentException if <code>startIndex > endIndex</code>
- */
- public void removeRange(int startIndex, int endIndex)
- {
- int index;
- if (startIndex > endIndex)
- throw new IllegalArgumentException();
- for (index = endIndex; index >= startIndex; index--)
- elements.remove(index);
- fireIntervalRemoved(this, startIndex, endIndex);
- }
-
- /**
- * Gets the size of the list.
- *
- * @return The number of elements currently in the list
- */
- public int getSize()
- {
- return elements.size();
- }
-
- /**
- * Gets the list element at a particular index.
- *
- * @param index The index to get the list value at
- *
- * @return The list value at the provided index
- *
- * @throws ArrayIndexOutOfBoundsException If the provided index is
- * outside the bounds of the list <code>[0, size())</code>
- */
- public Object getElementAt(int index)
- {
- return elements.get(index);
- }
-}
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