@@ -59,9 +59,7 @@ import java.beans.*;
import javax.swing.*;
import java.util.*;
import java.io.File;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Component;
import java.awt.*;
/**
* Widget for dynamically constructing a property editor based on the
@@ -70,7 +68,7 @@ import java.awt.Component;
* @version $Revision$
* @author Simeon Fitch
*/
public class DynamicCustomizer extends JPanel implements Customizer {
public class DynamicCustomizer extends JPanel implements Customizer, Scrollable {
static {
PropertyEditorManager.registerEditor(
String.class, StringPropertyEditor.class);
@@ -88,6 +86,8 @@ public class DynamicCustomizer extends JPanel implements Customizer {
Properties.class, PropertiesPropertyEditor.class);
PropertyEditorManager.registerEditor(
File.class, FilePropertyEditor.class);
PropertyEditorManager.registerEditor(
Object.class, ObjectPropertyEditor.class);
}
/** Property name that PropertyDescriptors can save in their property
@@ -109,7 +109,7 @@ public class DynamicCustomizer extends JPanel implements Customizer {
private boolean _readOnly = false;
/** List of property change listeners interested when the bean
* being edited has been changed. */
private List _changeListeners = new LinkedList();
private java.util. List _changeListeners = new LinkedList();
/** Flag to trun off event propogation. */
private boolean _squelchChangeEvents = false;
@@ -152,7 +152,7 @@ public class DynamicCustomizer extends JPanel implements Customizer {
// Lookup the editor.
PropertyEditor editor = getEditorForProperty(props[i]);
if(editor == null) continue;
// Add a listener to the editor so we know when to update
// the bean's fields.
editor.addPropertyChangeListener(_eListener);
@@ -161,7 +161,8 @@ public class DynamicCustomizer extends JPanel implements Customizer {
// that makes use of the "paintable" capability of the editor.
Component comp = editor.getCustomEditor();
if(comp == null) {
comp = new JLabel("<<null editor>>");
comp = new JLabel("<No editor available.>");
((JLabel)comp).setBorder(BorderFactory.createEtchedBorder());
}
// See if it is a read-only property. If so, then just
@@ -183,7 +184,6 @@ public class DynamicCustomizer extends JPanel implements Customizer {
}
}
// Add the label and fields.
add(label, gbc.forLabel());
add(comp, gbc.forField());
@@ -272,6 +272,11 @@ public class DynamicCustomizer extends JPanel implements Customizer {
}
}
// In the worse case we resort to the generic editor for Object types.
if(retval == null) {
retval = PropertyEditorManager.findEditor(Object.class);
}
return retval;
}
@@ -316,6 +321,111 @@ public class DynamicCustomizer extends JPanel implements Customizer {
}
}
/**
* Returns the preferred size of the viewport for a view component.
* For example the preferredSize of a JList component is the size
* required to acommodate all of the cells in its list however the
* value of preferredScrollableViewportSize is the size required for
* JList.getVisibleRowCount() rows. A component without any properties
* that would effect the viewport size should just return
* getPreferredSize() here.
*
* @return The preferredSize of a JViewport whose view is this Scrollable.
* @see JViewport#getPreferredSize
*/
public Dimension getPreferredScrollableViewportSize() {
Dimension size = getPreferredSize();
Dimension retval = new Dimension();
retval.width = size.width > 600 ? 600 : size.width;
retval.height = size.height > 400 ? 400 : size.height;
return retval;
}
/**
* Components that display logical rows or columns should compute
* the scroll increment that will completely expose one new row
* or column, depending on the value of orientation. Ideally,
* components should handle a partially exposed row or column by
* returning the distance required to completely expose the item.
* <p>
* Scrolling containers, like JScrollPane, will use this method
* each time the user requests a unit scroll.
*
* @param visibleRect The view area visible within the viewport
* @param orientation Either SwingConstants.VERTICAL or
* SwingConstants.HORIZONTAL.
* @param direction Less than zero to scroll up/left,
* greater than zero for down/right.
* @return The "unit" increment for scrolling in the specified direction
* @see JScrollBar#setUnitIncrement
*/
public int getScrollableUnitIncrement(Rectangle visibleRect,
int orientation, int direction) {
return 1;
}
/**
* Components that display logical rows or columns should compute
* the scroll increment that will completely expose one block
* of rows or columns, depending on the value of orientation.
* <p>
* Scrolling containers, like JScrollPane, will use this method
* each time the user requests a block scroll.
*
* @param visibleRect The view area visible within the viewport
* @param orientation Either SwingConstants.VERTICAL or
* SwingConstants.HORIZONTAL.
* @param direction Less than zero to scroll up/left,
* greater than zero for down/right.
* @return The "block" increment for scrolling in the specified direction.
* @see JScrollBar#setBlockIncrement
*/
public int getScrollableBlockIncrement(Rectangle visibleRect,
int orientation, int direction) {
return orientation == SwingConstants.VERTICAL ?
visibleRect.height / 2 : visibleRect.width / 2;
}
/**
* Return true if a viewport should always force the width of this
* Scrollable to match the width of the viewport. For example a noraml
* text view that supported line wrapping would return true here, since it
* would be undesirable for wrapped lines to disappear beyond the right
* edge of the viewport. Note that returning true for a Scrollable
* whose ancestor is a JScrollPane effectively disables horizontal
* scrolling.
* <p>
* Scrolling containers, like JViewport, will use this method each
* time they are validated.
*
* @return True if a viewport should force the Scrollables
* width to match its own.
*/
public boolean getScrollableTracksViewportWidth() {
return true;
}
/**
* Return true if a viewport should always force the height of this
* Scrollable to match the height of the viewport. For example a
* columnar text view that flowed text in left to right columns
* could effectively disable vertical scrolling by returning
* true here.
* <p>
* Scrolling containers, like JViewport, will use this method each
* time they are validated.
*
* @return True if a viewport should force the Scrollables
* height to match its own.
*/
public boolean getScrollableTracksViewportHeight() {
return false;
}
/** Class for receiving change events from the PropertyEditor objects. */
private class EditorChangeListener implements PropertyChangeListener {
public void propertyChange(PropertyChangeEvent e) {
@@ -354,7 +464,7 @@ public class DynamicCustomizer extends JPanel implements Customizer {
Integer i2 = (Integer) p2.getValue(SORT_ORDER);
if(i1 == null && i2 == null) {
return 0 ;
return p1.getName().compareTo(p2.getName()) ;
}
else if(i1 != null) {
return i1.compareTo(i2);
@@ -365,21 +475,26 @@ public class DynamicCustomizer extends JPanel implements Customizer {
}
}
/*----------------------------------------------------------------------*/
/** Class for testing this. */
private static class TestClass {
private String _String = null;
private String[] _StringArray = null;
private int _int = 0;
private Integer _Integer = null;
private double _double = 0;
private Double _Double = null;
private Properties _Properties = null;
private File _File = null;
public void setString(String string) {
private static class TestClass implements Cloneable {
private String _String = "This string is my name.";
private String[] _StringArray = { "one", "two", "three" };
private int _int = Integer.MIN_VALUE;
private Integer _Integer = new Integer(Integer.MAX_VALUE);
private double _double = Double.MIN_VALUE;
private Double _Double = new Double(Double.MAX_VALUE);
private Properties _Properties = System.getProperties();
private File _File = new File("/");
private Object _Object = new Font("Monospaced", Font.PLAIN, 12);
private JButton _button = new JButton("I'm a button!");
public void setName(String string) {
_String = string;
}
public String getString () {
public String getName () {
return _String;
}
@@ -431,6 +546,31 @@ public class DynamicCustomizer extends JPanel implements Customizer {
public File getFile() {
return _File;
}
public void setButton(JButton button) {
_button = button;
}
public JButton getButton() {
return _button;
}
public void setObject(Object o) {
_Object = o;
}
public Object getObject() {
return _Object;
}
public Object clone() {
try {
return super.clone();
}
catch(CloneNotSupportedException ex) {
return null;
}
}
}
@@ -442,12 +582,22 @@ public class DynamicCustomizer extends JPanel implements Customizer {
public static void main(String[] args) {
try {
Class c = args.length > 0 ? Class.forName(args[0]) : TestClass.class;
JFrame f = new JFrame(c.getName());
DynamicCustomizer custom =
new DynamicCustomizer(c);
custom.setObject(c.newInstance());
f.getContentPane().add(custom);
Class type = null;
Object instance = null;
if(args.length > 0) {
type = Class.forName(args[0]);
instance = type.newInstance();
}
else {
type = TestClass.class;
instance = new TestClass();
((TestClass)instance).setObject(new TestClass());
}
JFrame f = new JFrame(type.getName());
DynamicCustomizer custom = new DynamicCustomizer(type);
custom.setObject(instance);
f.getContentPane().add(new JScrollPane(custom));
f.pack();
f.setVisible(true);
}
metasim