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提交 6708dc49 编写于 作者: R rupashka
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6823603: Generics: JList 

Reviewed-by: peterz, alexp
Contributed-by: fbrunnerlist@gmx.ch
上级 c1a7cd13
隐藏空白更改
内联 并排
Showing with 409 addition and 94 deletion
src/share/classes/javax/swing/AbstractListModel.java
浏览文件 @ 6708dc49
......@@ -42,9 +42,11 @@ import java.util.EventListener;
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @param <E> the type of the elements of this model
*
* @author Hans Muller
*/
public abstract class AbstractListModel implements ListModel, Serializable
public abstract class AbstractListModel<E> implements ListModel<E>, Serializable
{
protected EventListenerList listenerList = new EventListenerList();
......
src/share/classes/javax/swing/DefaultListCellRenderer.java
浏览文件 @ 6708dc49
......@@ -71,7 +71,7 @@ import sun.swing.DefaultLookup;
* @author Hans Muller
*/
public class DefaultListCellRenderer extends JLabel
implements ListCellRenderer, Serializable
implements ListCellRenderer<Object>, Serializable
{
/**
......@@ -111,7 +111,7 @@ public class DefaultListCellRenderer extends JLabel
}
public Component getListCellRendererComponent(
JList list,
JList<?> list,
Object value,
int index,
boolean isSelected,
......
src/share/classes/javax/swing/DefaultListModel.java
浏览文件 @ 6708dc49
......@@ -48,11 +48,13 @@ import javax.swing.event.*;
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @param <E> the type of the elements of this model
*
* @author Hans Muller
*/
public class DefaultListModel extends AbstractListModel
public class DefaultListModel<E> extends AbstractListModel<E>
{
private Vector delegate = new Vector();
private Vector<E> delegate = new Vector<E>();
/**
* Returns the number of components in this list.
......@@ -83,7 +85,7 @@ public class DefaultListModel extends AbstractListModel
* list
* @see #get(int)
*/
public Object getElementAt(int index) {
public E getElementAt(int index) {
return delegate.elementAt(index);
}
......@@ -175,7 +177,7 @@ public class DefaultListModel extends AbstractListModel
* @return an enumeration of the components of this list
* @see Vector#elements()
*/
public Enumeration<?> elements() {
public Enumeration<E> elements() {
return delegate.elements();
}
......@@ -260,7 +262,7 @@ public class DefaultListModel extends AbstractListModel
* @see #get(int)
* @see Vector#elementAt(int)
*/
public Object elementAt(int index) {
public E elementAt(int index) {
return delegate.elementAt(index);
}
......@@ -271,7 +273,7 @@ public class DefaultListModel extends AbstractListModel
* @return the first component of this list
* @see Vector#firstElement()
*/
public Object firstElement() {
public E firstElement() {
return delegate.firstElement();
}
......@@ -283,13 +285,13 @@ public class DefaultListModel extends AbstractListModel
* @return the last component of the list
* @see Vector#lastElement()
*/
public Object lastElement() {
public E lastElement() {
return delegate.lastElement();
}
/**
* Sets the component at the specified <code>index</code> of this
* list to be the specified object. The previous component at that
* list to be the specified element. The previous component at that
* position is discarded.
* <p>
* Throws an <code>ArrayIndexOutOfBoundsException</code> if the index
......@@ -300,13 +302,13 @@ public class DefaultListModel extends AbstractListModel
* <code>List</code> interface defined in the 1.2 Collections framework.
* </blockquote>
*
* @param obj what the component is to be set to
* @param element what the component is to be set to
* @param index the specified index
* @see #set(int,Object)
* @see Vector#setElementAt(Object,int)
*/
public void setElementAt(Object obj, int index) {
delegate.setElementAt(obj, index);
public void setElementAt(E element, int index) {
delegate.setElementAt(element, index);
fireContentsChanged(this, index, index);
}
......@@ -331,7 +333,7 @@ public class DefaultListModel extends AbstractListModel
}
/**
* Inserts the specified object as a component in this list at the
* Inserts the specified element as a component in this list at the
* specified <code>index</code>.
* <p>
* Throws an <code>ArrayIndexOutOfBoundsException</code> if the index
......@@ -342,26 +344,26 @@ public class DefaultListModel extends AbstractListModel
* <code>List</code> interface defined in the 1.2 Collections framework.
* </blockquote>
*
* @param obj the component to insert
* @param element the component to insert
* @param index where to insert the new component
* @exception ArrayIndexOutOfBoundsException if the index was invalid
* @see #add(int,Object)
* @see Vector#insertElementAt(Object,int)
*/
public void insertElementAt(Object obj, int index) {
delegate.insertElementAt(obj, index);
public void insertElementAt(E element, int index) {
delegate.insertElementAt(element, index);
fireIntervalAdded(this, index, index);
}
/**
* Adds the specified component to the end of this list.
*
* @param obj the component to be added
* @param element the component to be added
* @see Vector#addElement(Object)
*/
public void addElement(Object obj) {
public void addElement(E element) {
int index = delegate.size();
delegate.addElement(obj);
delegate.addElement(element);
fireIntervalAdded(this, index, index);
}
......@@ -441,7 +443,7 @@ public class DefaultListModel extends AbstractListModel
*
* @param index index of element to return
*/
public Object get(int index) {
public E get(int index) {
return delegate.elementAt(index);
}
......@@ -457,8 +459,8 @@ public class DefaultListModel extends AbstractListModel
* @param element element to be stored at the specified position
* @return the element previously at the specified position
*/
public Object set(int index, Object element) {
Object rv = delegate.elementAt(index);
public E set(int index, E element) {
E rv = delegate.elementAt(index);
delegate.setElementAt(element, index);
fireContentsChanged(this, index, index);
return rv;
......@@ -474,7 +476,7 @@ public class DefaultListModel extends AbstractListModel
* @param index index at which the specified element is to be inserted
* @param element element to be inserted
*/
public void add(int index, Object element) {
public void add(int index, E element) {
delegate.insertElementAt(element, index);
fireIntervalAdded(this, index, index);
}
......@@ -488,9 +490,10 @@ public class DefaultListModel extends AbstractListModel
* (<code>index &lt; 0 || index &gt;= size()</code>).
*
* @param index the index of the element to removed
* @return the element previously at the specified position
*/
public Object remove(int index) {
Object rv = delegate.elementAt(index);
public E remove(int index) {
E rv = delegate.elementAt(index);
delegate.removeElementAt(index);
fireIntervalRemoved(this, index, index);
return rv;
......
src/share/classes/javax/swing/JList.java
浏览文件 @ 6708dc49
......@@ -25,11 +25,24 @@
package javax.swing;
import java.awt.Color;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.*;
import java.awt.*;
import java.util.Vector;
import java.util.Locale;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
......@@ -59,28 +72,30 @@ import static sun.swing.SwingUtilities2.Section.*;
* constructor that automatically builds a read-only {@code ListModel} instance
* for you:
* <pre>
* {@code
* // Create a JList that displays strings from an array
*
* String[] data = {"one", "two", "three", "four"};
* JList myList = new JList(data);
* JList<String> myList = new JList<String>(data);
*
* // Create a JList that displays the superclasses of JList.class, by
* // creating it with a Vector populated with this data
*
* Vector superClasses = new Vector();
* Class rootClass = javax.swing.JList.class;
* for(Class cls = rootClass; cls != null; cls = cls.getSuperclass()) {
* Vector<Class<?>> superClasses = new Vector<Class<?>>();
* Class<JList> rootClass = javax.swing.JList.class;
* for(Class<?> cls = rootClass; cls != null; cls = cls.getSuperclass()) {
* superClasses.addElement(cls);
* }
* JList myList = new JList(superClasses);
* JList<Class<?>> myList = new JList<Class<?>>(superClasses);
*
* // The automatically created model is stored in JList's "model"
* // property, which you can retrieve
*
* ListModel model = myList.getModel();
* ListModel<Class<?>> model = myList.getModel();
* for(int i = 0; i < model.getSize(); i++) {
* System.out.println(model.getElementAt(i));
* }
* }
* </pre>
* <p>
* A {@code ListModel} can be supplied directly to a {@code JList} by way of a
......@@ -103,12 +118,14 @@ import static sun.swing.SwingUtilities2.Section.*;
* notifying listeners. For example, a read-only implementation of
* {@code AbstractListModel}:
* <pre>
* {@code
* // This list model has about 2^16 elements. Enjoy scrolling.
*
* ListModel bigData = new AbstractListModel() {
* ListModel<String> bigData = new AbstractListModel<String>() {
* public int getSize() { return Short.MAX_VALUE; }
* public Object getElementAt(int index) { return "Index " + index; }
* public String getElementAt(int index) { return "Index " + index; }
* };
* }
* </pre>
* <p>
* The selection state of a {@code JList} is managed by another separate
......@@ -150,9 +167,10 @@ import static sun.swing.SwingUtilities2.Section.*;
* component to render, is installed by the lists's {@code ListUI}. You can
* substitute your own renderer using code like this:
* <pre>
* {@code
* // Display an icon and a string for each object in the list.
*
* class MyCellRenderer extends JLabel implements ListCellRenderer {
* class MyCellRenderer extends JLabel implements ListCellRenderer<Object> {
* final static ImageIcon longIcon = new ImageIcon("long.gif");
* final static ImageIcon shortIcon = new ImageIcon("short.gif");
*
......@@ -160,7 +178,7 @@ import static sun.swing.SwingUtilities2.Section.*;
* // We just reconfigure the JLabel each time we're called.
*
* public Component getListCellRendererComponent(
* JList list, // the list
* JList<?> list, // the list
* Object value, // value to display
* int index, // cell index
* boolean isSelected, // is the cell selected
......@@ -184,6 +202,7 @@ import static sun.swing.SwingUtilities2.Section.*;
* }
*
* myList.setCellRenderer(new MyCellRenderer());
* }
* </pre>
* <p>
* Another job for the cell renderer is in helping to determine sizing
......@@ -195,7 +214,8 @@ import static sun.swing.SwingUtilities2.Section.*;
* automatically based on a single prototype value:
* <a name="prototype_example">
* <pre>
* JList bigDataList = new JList(bigData);
* {@code
* JList<String> bigDataList = new JList<String>(bigData);
*
* // We don't want the JList implementation to compute the width
* // or height of all of the list cells, so we give it a string
......@@ -204,6 +224,7 @@ import static sun.swing.SwingUtilities2.Section.*;
* // properties.
*
* bigDataList.setPrototypeCellValue("Index 1234567890");
* }
* </pre>
* <p>
* {@code JList} doesn't implement scrolling directly. To create a list that
......@@ -260,13 +281,15 @@ import static sun.swing.SwingUtilities2.Section.*;
* @see ListCellRenderer
* @see DefaultListCellRenderer
*
* @param <E> the type of the elements of this list
*
* @beaninfo
* attribute: isContainer false
* description: A component which allows for the selection of one or more objects from a list.
*
* @author Hans Muller
*/
public class JList extends JComponent implements Scrollable, Accessible
public class JList<E> extends JComponent implements Scrollable, Accessible
{
/**
* @see #getUIClassID
......@@ -301,15 +324,15 @@ public class JList extends JComponent implements Scrollable, Accessible
private int fixedCellWidth = -1;
private int fixedCellHeight = -1;
private int horizontalScrollIncrement = -1;
private Object prototypeCellValue;
private E prototypeCellValue;
private int visibleRowCount = 8;
private Color selectionForeground;
private Color selectionBackground;
private boolean dragEnabled;
private ListSelectionModel selectionModel;
private ListModel dataModel;
private ListCellRenderer cellRenderer;
private ListModel<E> dataModel;
private ListCellRenderer<? super E> cellRenderer;
private ListSelectionListener selectionListener;
/**
......@@ -402,7 +425,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* @param dataModel the model for the list
* @exception IllegalArgumentException if the model is {@code null}
*/
public JList(ListModel dataModel)
public JList(ListModel<E> dataModel)
{
if (dataModel == null) {
throw new IllegalArgumentException("dataModel must be non null");
......@@ -437,12 +460,12 @@ public class JList extends JComponent implements Scrollable, Accessible
* @param listData the array of Objects to be loaded into the data model,
* {@code non-null}
*/
public JList(final Object[] listData)
public JList(final E[] listData)
{
this (
new AbstractListModel() {
new AbstractListModel<E>() {
public int getSize() { return listData.length; }
public Object getElementAt(int i) { return listData[i]; }
public E getElementAt(int i) { return listData[i]; }
}
);
}
......@@ -462,11 +485,11 @@ public class JList extends JComponent implements Scrollable, Accessible
* @param listData the <code>Vector</code> to be loaded into the
* data model, {@code non-null}
*/
public JList(final Vector<?> listData) {
public JList(final Vector<? extends E> listData) {
this (
new AbstractListModel() {
new AbstractListModel<E>() {
public int getSize() { return listData.size(); }
public Object getElementAt(int i) { return listData.elementAt(i); }
public E getElementAt(int i) { return listData.elementAt(i); }
}
);
}
......@@ -477,9 +500,9 @@ public class JList extends JComponent implements Scrollable, Accessible
*/
public JList() {
this (
new AbstractListModel() {
new AbstractListModel<E>() {
public int getSize() { return 0; }
public Object getElementAt(int i) { return "No Data Model"; }
public E getElementAt(int i) { throw new IndexOutOfBoundsException("No Data Model"); }
}
);
}
......@@ -526,7 +549,7 @@ public class JList extends JComponent implements Scrollable, Accessible
public void updateUI() {
setUI((ListUI)UIManager.getUI(this));
ListCellRenderer renderer = getCellRenderer();
ListCellRenderer<? super E> renderer = getCellRenderer();
if (renderer instanceof Component) {
SwingUtilities.updateComponentTreeUI((Component)renderer);
}
......@@ -560,8 +583,8 @@ public class JList extends JComponent implements Scrollable, Accessible
*/
private void updateFixedCellSize()
{
ListCellRenderer cr = getCellRenderer();
Object value = getPrototypeCellValue();
ListCellRenderer<? super E> cr = getCellRenderer();
E value = getPrototypeCellValue();
if ((cr != null) && (value != null)) {
Component c = cr.getListCellRendererComponent(this, value, 0, false, false);
......@@ -592,7 +615,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* @return the value of the {@code prototypeCellValue} property
* @see #setPrototypeCellValue
*/
public Object getPrototypeCellValue() {
public E getPrototypeCellValue() {
return prototypeCellValue;
}
......@@ -632,8 +655,8 @@ public class JList extends JComponent implements Scrollable, Accessible
* attribute: visualUpdate true
* description: The cell prototype value, used to compute cell width and height.
*/
public void setPrototypeCellValue(Object prototypeCellValue) {
Object oldValue = this.prototypeCellValue;
public void setPrototypeCellValue(E prototypeCellValue) {
E oldValue = this.prototypeCellValue;
this.prototypeCellValue = prototypeCellValue;
/* If the prototypeCellValue has changed and is non-null,
......@@ -727,7 +750,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* @see #setCellRenderer
*/
@Transient
public ListCellRenderer getCellRenderer() {
public ListCellRenderer<? super E> getCellRenderer() {
return cellRenderer;
}
......@@ -755,8 +778,8 @@ public class JList extends JComponent implements Scrollable, Accessible
* attribute: visualUpdate true
* description: The component used to draw the cells.
*/
public void setCellRenderer(ListCellRenderer cellRenderer) {
ListCellRenderer oldValue = this.cellRenderer;
public void setCellRenderer(ListCellRenderer<? super E> cellRenderer) {
ListCellRenderer<? super E> oldValue = this.cellRenderer;
this.cellRenderer = cellRenderer;
/* If the cellRenderer has changed and prototypeCellValue
......@@ -1455,7 +1478,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* @since 1.4
*/
public int getNextMatch(String prefix, int startIndex, Position.Bias bias) {
ListModel model = getModel();
ListModel<E> model = getModel();
int max = model.getSize();
if (prefix == null) {
throw new IllegalArgumentException();
......@@ -1469,16 +1492,16 @@ public class JList extends JComponent implements Scrollable, Accessible
int increment = (bias == Position.Bias.Forward) ? 1 : -1;
int index = startIndex;
do {
Object o = model.getElementAt(index);
E element = model.getElementAt(index);
if (o != null) {
if (element != null) {
String string;
if (o instanceof String) {
string = ((String)o).toUpperCase();
if (element instanceof String) {
string = ((String)element).toUpperCase();
}
else {
string = o.toString();
string = element.toString();
if (string != null) {
string = string.toUpperCase();
}
......@@ -1516,7 +1539,7 @@ public class JList extends JComponent implements Scrollable, Accessible
if(event != null) {
Point p = event.getPoint();
int index = locationToIndex(p);
ListCellRenderer r = getCellRenderer();
ListCellRenderer<? super E> r = getCellRenderer();
Rectangle cellBounds;
if (index != -1 && r != null && (cellBounds =
......@@ -1634,7 +1657,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* list of items
* @see #setModel
*/
public ListModel getModel() {
public ListModel<E> getModel() {
return dataModel;
}
......@@ -1656,11 +1679,11 @@ public class JList extends JComponent implements Scrollable, Accessible
* attribute: visualUpdate true
* description: The object that contains the data to be drawn by this JList.
*/
public void setModel(ListModel model) {
public void setModel(ListModel<E> model) {
if (model == null) {
throw new IllegalArgumentException("model must be non null");
}
ListModel oldValue = dataModel;
ListModel<E> oldValue = dataModel;
dataModel = model;
firePropertyChange("model", oldValue, dataModel);
clearSelection();
......@@ -1668,7 +1691,7 @@ public class JList extends JComponent implements Scrollable, Accessible
/**
* Constructs a read-only <code>ListModel</code> from an array of objects,
* Constructs a read-only <code>ListModel</code> from an array of items,
* and calls {@code setModel} with this model.
* <p>
* Attempts to pass a {@code null} value to this method results in
......@@ -1676,15 +1699,15 @@ public class JList extends JComponent implements Scrollable, Accessible
* references the given array directly. Attempts to modify the array
* after invoking this method results in undefined behavior.
*
* @param listData an array of {@code Objects} containing the items to
* @param listData an array of {@code E} containing the items to
* display in the list
* @see #setModel
*/
public void setListData(final Object[] listData) {
public void setListData(final E[] listData) {
setModel (
new AbstractListModel() {
new AbstractListModel<E>() {
public int getSize() { return listData.length; }
public Object getElementAt(int i) { return listData[i]; }
public E getElementAt(int i) { return listData[i]; }
}
);
}
......@@ -1703,11 +1726,11 @@ public class JList extends JComponent implements Scrollable, Accessible
* display in the list
* @see #setModel
*/
public void setListData(final Vector<?> listData) {
public void setListData(final Vector<? extends E> listData) {
setModel (
new AbstractListModel() {
new AbstractListModel<E>() {
public int getSize() { return listData.size(); }
public Object getElementAt(int i) { return listData.elementAt(i); }
public E getElementAt(int i) { return listData.elementAt(i); }
}
);
}
......@@ -2235,10 +2258,13 @@ public class JList extends JComponent implements Scrollable, Accessible
* @see #isSelectedIndex
* @see #getModel
* @see #addListSelectionListener
*
* @deprecated As of JDK 1.7, replaced by {@link #getSelectedValuesList()}
*/
@Deprecated
public Object[] getSelectedValues() {
ListSelectionModel sm = getSelectionModel();
ListModel dm = getModel();
ListModel<E> dm = getModel();
int iMin = sm.getMinSelectionIndex();
int iMax = sm.getMaxSelectionIndex();
......@@ -2259,6 +2285,37 @@ public class JList extends JComponent implements Scrollable, Accessible
return rv;
}
/**
* Returns a list of all the selected items, in increasing order based
* on their indices in the list.
*
* @return the selected items, or an empty list if nothing is selected
* @see #isSelectedIndex
* @see #getModel
* @see #addListSelectionListener
*
* @since 1.7
*/
public List<E> getSelectedValuesList() {
ListSelectionModel sm = getSelectionModel();
ListModel<E> dm = getModel();
int iMin = sm.getMinSelectionIndex();
int iMax = sm.getMaxSelectionIndex();
if ((iMin < 0) || (iMax < 0)) {
return Collections.emptyList();
}
List<E> selectedItems = new ArrayList<E>();
for(int i = iMin; i <= iMax; i++) {
if (sm.isSelectedIndex(i)) {
selectedItems.add(dm.getElementAt(i));
}
}
return selectedItems;
}
/**
* Returns the smallest selected cell index; <i>the selection</i> when only
......@@ -2291,7 +2348,7 @@ public class JList extends JComponent implements Scrollable, Accessible
* @see #getModel
* @see #addListSelectionListener
*/
public Object getSelectedValue() {
public E getSelectedValue() {
int i = getMinSelectionIndex();
return (i == -1) ? null : getModel().getElementAt(i);
}
......@@ -2309,7 +2366,7 @@ public class JList extends JComponent implements Scrollable, Accessible
setSelectedIndex(-1);
else if(!anObject.equals(getSelectedValue())) {
int i,c;
ListModel dm = getModel();
ListModel<E> dm = getModel();
for(i=0,c=dm.getSize();i<c;i++)
if(anObject.equals(dm.getElementAt(i))){
setSelectedIndex(i);
......@@ -3138,14 +3195,14 @@ public class JList extends JComponent implements Scrollable, Accessible
*/
protected class AccessibleJListChild extends AccessibleContext
implements Accessible, AccessibleComponent {
private JList parent = null;
private JList<E> parent = null;
private int indexInParent;
private Component component = null;
private AccessibleContext accessibleContext = null;
private ListModel listModel;
private ListCellRenderer cellRenderer = null;
private ListModel<E> listModel;
private ListCellRenderer<? super E> cellRenderer = null;
public AccessibleJListChild(JList parent, int indexInParent) {
public AccessibleJListChild(JList<E> parent, int indexInParent) {
this.parent = parent;
this.setAccessibleParent(parent);
this.indexInParent = indexInParent;
......@@ -3175,7 +3232,7 @@ public class JList extends JComponent implements Scrollable, Accessible
if ((parent != null)
&& (listModel != null)
&& cellRenderer != null) {
Object value = listModel.getElementAt(index);
E value = listModel.getElementAt(index);
boolean isSelected = parent.isSelectedIndex(index);
boolean isFocussed = parent.isFocusOwner()
&& (index == parent.getLeadSelectionIndex());
......
src/share/classes/javax/swing/ListCellRenderer.java
浏览文件 @ 6708dc49
......@@ -33,12 +33,13 @@ import java.awt.Component;
* the cells in a JList. For example, to use a JLabel as a
* ListCellRenderer, you would write something like this:
* <pre>
* class MyCellRenderer extends JLabel implements ListCellRenderer {
* {@code
* class MyCellRenderer extends JLabel implements ListCellRenderer<Object> {
* public MyCellRenderer() {
* setOpaque(true);
* }
*
* public Component getListCellRendererComponent(JList list,
* public Component getListCellRendererComponent(JList<?> list,
* Object value,
* int index,
* boolean isSelected,
......@@ -75,14 +76,17 @@ import java.awt.Component;
* return this;
* }
* }
* }
* </pre>
*
* @param <E> the type of values this renderer can be used for
*
* @see JList
* @see DefaultListCellRenderer
*
* @author Hans Muller
*/
public interface ListCellRenderer
public interface ListCellRenderer<E>
{
/**
* Return a component that has been configured to display the specified
......@@ -104,8 +108,8 @@ public interface ListCellRenderer
* @see ListModel
*/
Component getListCellRendererComponent(
JList list,
Object value,
JList<? extends E> list,
E value,
int index,
boolean isSelected,
boolean cellHasFocus);
......
src/share/classes/javax/swing/ListModel.java
浏览文件 @ 6708dc49
......@@ -35,10 +35,12 @@ import javax.swing.event.ListDataListener;
* length of the data model must be reported to all of the
* ListDataListeners.
*
* @param <E> the type of the elements of this model
*
* @author Hans Muller
* @see JList
*/
public interface ListModel
public interface ListModel<E>
{
/**
* Returns the length of the list.
......@@ -51,7 +53,7 @@ public interface ListModel
* @param index the requested index
* @return the value at <code>index</code>
*/
Object getElementAt(int index);
E getElementAt(int index);
/**
* Adds a listener to the list that's notified each time a change
......
test/javax/swing/JList/6823603/bug6823603.java 0 → 100644
浏览文件 @ 6708dc49
/*
* Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/* @test
@bug 6823603
@summary Generics: JList
@author Florian Brunner
@run main bug6823603
*/
import java.util.Arrays;
import java.util.List;
import java.util.Vector;
import java.util.Enumeration;
import java.awt.*;
import javax.swing.*;
public class bug6823603 {
private static final String TEST_ELEMENT = "Test1";
/**
* @param args the command line arguments
*/
@SuppressWarnings("unchecked")
public static void main(String[] args) {
testRawSignatures();
testGenericSignatures();
testGetSelectedValuesList(); // new method
}
@SuppressWarnings("unchecked")
private static void testRawSignatures() {
// Test JList
ListModel rawTestModel = new DefaultListModel();
new JList();
new JList(rawTestModel);
new JList(new Object[]{TEST_ELEMENT});
JList rawTestList = new JList(new Vector());
rawTestList.getPrototypeCellValue();
rawTestList.setPrototypeCellValue(TEST_ELEMENT);
rawTestList.getCellRenderer();
rawTestList.setCellRenderer(new DefaultListCellRenderer());
rawTestList.getModel();
rawTestList.setModel(rawTestModel);
rawTestList.setListData(new Object[]{TEST_ELEMENT});
rawTestList.setListData(new Vector());
@SuppressWarnings("deprecation")
Object[] selectedValues = rawTestList.getSelectedValues();
rawTestList.getSelectedValue();
// Test ListCellRenderer
ListCellRenderer rawTestCellRenderer = new DefaultListCellRenderer();
String testEntry = "Test";
@SuppressWarnings("unchecked")
JList rawJList = new JList(new Object[]{testEntry});
rawTestCellRenderer.getListCellRendererComponent(rawJList,
testEntry, 0, true, true);
// Test ListModel
DefaultListModel testModel = new DefaultListModel();
testModel.addElement(TEST_ELEMENT);
rawTestModel = testModel;
rawTestModel.getElementAt(0);
// Test DefaultListModel
DefaultListModel defaultListModel = new DefaultListModel();
defaultListModel.addElement(TEST_ELEMENT);
defaultListModel.getElementAt(0);
defaultListModel.elements();
defaultListModel.elementAt(0);
defaultListModel.firstElement();
defaultListModel.lastElement();
String testElement2 = "Test2";
defaultListModel.setElementAt(testElement2, 0);
defaultListModel.insertElementAt(TEST_ELEMENT, 0);
defaultListModel.get(0);
defaultListModel.set(0, testElement2);
defaultListModel.add(0, TEST_ELEMENT);
defaultListModel.remove(0);
// Test AbstractListModel
@SuppressWarnings("serial")
ListModel abstractListModel = new AbstractListModel() {
public int getSize() {
throw new UnsupportedOperationException("Not supported yet.");
}
public Object getElementAt(int index) {
throw new UnsupportedOperationException("Not supported yet.");
}
};
// Test DefaultListCellRenderer
DefaultListCellRenderer cellRenderer = new DefaultListCellRenderer();
@SuppressWarnings("unchecked")
JList list = new JList(new Object[]{testEntry});
cellRenderer.getListCellRendererComponent(rawJList, testEntry, 0, true, true);
}
private static <E> void testGenericSignatures() {
// Test JList
ListModel<String> stringListModel = new DefaultListModel<String>();
new JList<String>();
new JList<String>(stringListModel);
new JList<String>(new String[]{TEST_ELEMENT});
JList<String> stringTestList = new JList<String>(new Vector<String>());
stringTestList.getPrototypeCellValue();
stringTestList.setPrototypeCellValue(TEST_ELEMENT);
ListCellRenderer<? super String> cellRenderer = stringTestList.getCellRenderer();
stringTestList.setCellRenderer(new DefaultListCellRenderer());
ListModel<String> model = stringTestList.getModel();
stringTestList.setModel(stringListModel);
stringTestList.setListData(new String[]{TEST_ELEMENT});
stringTestList.setListData(new Vector<String>());
@SuppressWarnings("deprecation")
Object[] selectedValues = stringTestList.getSelectedValues();
stringTestList.getSelectedValue();
// Test ListCellRenderer
ListCellRenderer<Object> stringTestCellRenderer =
new DefaultListCellRenderer();
String testEntry = "Test";
JList<String> stringJList = new JList<String>(new String[]{testEntry});
Component listCellRendererComponent2 =
stringTestCellRenderer.getListCellRendererComponent(stringJList,
testEntry, 0, true, true);
// Test ListModel
DefaultListModel<String> testModel = new DefaultListModel<String>();
testModel.addElement(TEST_ELEMENT);
stringListModel = testModel;
String element1 = stringListModel.getElementAt(0);
// Test DefaultListModel
DefaultListModel<String> stringTestModel = new DefaultListModel<String>();
stringTestModel.addElement(TEST_ELEMENT);
element1 = stringTestModel.getElementAt(0);
Enumeration<String> elements = stringTestModel.elements();
String element2 = stringTestModel.elementAt(0);
String firstElement = stringTestModel.firstElement();
String lastElement = stringTestModel.lastElement();
String testElement2 = "Test2";
stringTestModel.setElementAt(testElement2, 0);
stringTestModel.insertElementAt(TEST_ELEMENT, 0);
String element3 = stringTestModel.get(0);
String element4 = stringTestModel.set(0, testElement2);
stringTestModel.add(0, TEST_ELEMENT);
String removedElement = stringTestModel.remove(0);
// Test AbstractListModel
stringListModel = new AbstractListModel<String>() {
public int getSize() {
throw new UnsupportedOperationException("Not supported yet.");
}
public String getElementAt(int index) {
throw new UnsupportedOperationException("Not supported yet.");
}
};
@SuppressWarnings("serial")
ListModel<E> genericTestModel = new AbstractListModel<E>() {
public int getSize() {
throw new UnsupportedOperationException("Not supported yet.");
}
public E getElementAt(int index) {
throw new UnsupportedOperationException("Not supported yet.");
}
};
// Test DefaultListCellRenderer
cellRenderer = new DefaultListCellRenderer();
stringJList = new JList<String>(new String[]{testEntry});
listCellRendererComponent2 = cellRenderer.getListCellRendererComponent(stringJList, testEntry, 0, true, true);
}
private static void testGetSelectedValuesList() {
Vector<Integer> data = new Vector<Integer>();
for (int i = 0; i < 10; i++) {
data.add(i);
}
JList<Integer> list = new JList<Integer>(data);
list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
list.setSelectedIndices(new int[]{1, 2, 3, 5, 6, 8});
@SuppressWarnings("deprecation")
Object[] expectedSelectedValues = list.getSelectedValues();
List<Integer> selectedValuesList = list.getSelectedValuesList();
assertEquals(expectedSelectedValues, selectedValuesList.toArray());
}
private static void assertEquals(Object[] expectedArray,
Object[] actualArray) {
if (!Arrays.equals(expectedArray, actualArray)) {
throw new RuntimeException("Expected: " + Arrays.toString(
expectedArray) + " but was: " + Arrays.toString(actualArray));
}
}
}
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