JToolBarとコンポーネントのDrag'n'Drop
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JToolBarTest.java
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.util.*;
/**
* $Id: JToolBar.html,v 1.1 2009/06/22 16:11:48 kishi Exp kishi $
*/
public class JToolBarTest extends JFrame {
private DNDListener dndListener;
private DragSource dragSource;
private DropTarget dropTarget;
private JButton imageButton;
private JCheckBox checkBox;
private JRadioButton radioButton;
private JLabel label;
private JComboBox comboBox;
private JButton button;
private JTextArea textArea;
private JTextField textField;
private JToolBar tool;
private JPanel panel;
public JToolBarTest() {
super( "■JToolBarのテスト" );
setBounds( 128, 256, 480, 600 );
tool = new JToolBar( "MyBar" );
panel = new JPanel();
// ドラッグアンドドロップを実施するクラスのインスタンス化
dndListener = new DNDListener();
dndListener.setReference( this );
dragSource = new DragSource();
dropTarget = new DropTarget( panel, DnDConstants.ACTION_COPY, dndListener );
putComponents();
// ツールバーを上部に追加
this.getContentPane().add( tool , BorderLayout.NORTH );
// パネルを下部に追加
this.getContentPane().add( panel , BorderLayout.CENTER );
//------------------------------------------------------------
//
//------------------------------------------------------------
setDefaultCloseOperation( EXIT_ON_CLOSE );
setVisible( true );
}
public static void main( String[] args ) {
JToolBarTest test = new JToolBarTest();
}
public void putComponents() {
tool.removeAll();
// イメージボタン
imageButton = new JButton( new ImageIcon( "logo.gif" ) );
tool.add( imageButton );
// チェックボックス
checkBox = new JCheckBox();
checkBox.setSelected( true );
checkBox.setEnabled( false );
tool.add( checkBox );
// ラジオボタン
radioButton = new JRadioButton();
radioButton.setSelected( true );
radioButton.setEnabled( false );
tool.add( radioButton );
// ラベル
tool.addSeparator();
label = new JLabel( "Label" );
tool.add( label );
// コンボボックス
tool.addSeparator();
Object[] names = new Object[] {" "};
comboBox = new JComboBox( );
tool.add( comboBox );
// ボタン
tool.addSeparator();
button = new JButton( "Button" );
tool.add( button );
// テキストエリア
tool.addSeparator();
textArea = new JTextArea( "TextArea" );
textArea.setEnabled( false );
tool.add( textArea );
// テキストフィールド
tool.addSeparator();
textField = new JTextField();
textField.setText( "TextField" );
textField.setEnabled( false );
tool.add( textField );
Component[] components = tool.getComponents();
for ( int i = 0;i < components.length;i++ ) {
System.out.println( components[ i ] );
System.out.println( );
}
this.validate();
this.repaint();
/**
DragGestureRecognizer dragRecognizer1 = dragSource.createDefaultDragGestureRecognizer(
imageButton, DnDConstants.ACTION_COPY, dndListener );
*/
java.util.List list = new LinkedList();
list.add( imageButton );
list.add( checkBox );
list.add( radioButton );
list.add( label );
list.add( comboBox );
list.add( button );
list.add( textArea );
list.add( textField );
Iterator iterator = list.iterator();
while ( iterator.hasNext() ) {
Component obj = ( Component ) iterator.next();
DragGestureRecognizer dragRecognizer = dragSource.createDefaultDragGestureRecognizer(
obj, DnDConstants.ACTION_COPY, dndListener );
}
}
}
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DNDListener.java
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import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.event.*;
import java.io.*;
/**
$Id: JToolBar.html,v 1.1 2009/06/22 16:11:48 kishi Exp kishi $
*/
public class DNDListener implements DragGestureListener, DragSourceListener,
DropTargetListener, Transferable {
static final DataFlavor[] supportedFlavors = { null };
private JToolBarTest test;
private Object object;
static
{
try {
supportedFlavors[ 0 ] = new DataFlavor( DataFlavor.javaJVMLocalObjectMimeType );
} catch ( Exception ex ) {
ex.printStackTrace();
}
}
public void setReference( JToolBarTest test ) {
this.test = test;
}
// Transferable methods.
public Object getTransferData( DataFlavor flavor ) {
if ( flavor.isMimeTypeEqual( DataFlavor.javaJVMLocalObjectMimeType ) )
return object;
else
return null;
}
public DataFlavor[] getTransferDataFlavors() {
return supportedFlavors;
}
public boolean isDataFlavorSupported( DataFlavor flavor ) {
return flavor.isMimeTypeEqual( DataFlavor.javaJVMLocalObjectMimeType );
}
// DragGestureListener method.
public void dragGestureRecognized( DragGestureEvent ev ) {
ev.startDrag( null, this, this );
}
// DragSourceListener methods.
public void dragDropEnd( DragSourceDropEvent ev ) { }
public void dragEnter( DragSourceDragEvent ev ) { }
public void dragExit( DragSourceEvent ev ) { }
public void dragOver( DragSourceDragEvent ev ) {
object = ev.getSource();
}
public void dropActionChanged( DragSourceDragEvent ev ) { }
// DropTargetListener methods.
public void dragEnter( DropTargetDragEvent ev ) { }
public void dragExit( DropTargetEvent ev ) { }
public void dragOver( DropTargetDragEvent ev ) {
dropTargetDrag( ev );
}
public void dropActionChanged( DropTargetDragEvent ev ) {
dropTargetDrag( ev );
}
void dropTargetDrag( DropTargetDragEvent ev ) {
ev.acceptDrag( ev.getDropAction() );
}
public void drop( DropTargetDropEvent ev ) {
ev.acceptDrop( ev.getDropAction() );
try {
Object target = ev.getSource();
Object source = ev.getTransferable().getTransferData( supportedFlavors[ 0 ] );
Component component = ( ( DragSourceContext ) source ).getComponent();
Container oldContainer = component.getParent();
Container container = ( Container ) ( ( DropTarget ) target ).getComponent();
container.add( component );
test.putComponents();
oldContainer.validate();
oldContainer.repaint();
container.validate();
container.repaint();
} catch ( Exception ex ) {
ex.printStackTrace();
}
ev.dropComplete( true );
}
public static void main( String[] arg ) {
// ドラッグアンドドロップするコンポーネントの生成
Button button1 = new Button( "このボタンをドラッグしてください。" );
Button button2 = new Button( "このボタンをドラッグしてください。" );
Label label = new Label( "このラベルをドラッグしてください。" );
label.setBackground( Color.yellow );
Checkbox checkbox = new Checkbox( "このチェックボックスをドラッグしてください。" );
Frame frame = new Frame( "パネル間でのDrag'n'Dropのテスト" );
frame.setLayout( new GridLayout( 2, 1 ) );
// 上部のパネル
Panel upperPanel = new Panel();
upperPanel.add( button1 );
upperPanel.add( label );
upperPanel.add( checkbox );
// 下部のパネル
Panel lowerPanel = new Panel();
lowerPanel.setBackground( Color.cyan );
lowerPanel.add( button2 );
frame.add( upperPanel );
frame.add( lowerPanel );
frame.addWindowListener( new WindowAdapter() {
public void windowClosing( WindowEvent we ) {
System.exit( 0 );
}
}
);
DNDListener dndListener = new DNDListener();
DragSource dragSource = new DragSource();
DropTarget dropTarget1 = new DropTarget( upperPanel, DnDConstants.ACTION_MOVE, dndListener );
DropTarget dropTarget2 = new DropTarget( lowerPanel, DnDConstants.ACTION_MOVE, dndListener );
DragGestureRecognizer dragRecognizer1 = dragSource.createDefaultDragGestureRecognizer( button1, DnDConstants.ACTION_MOVE, dndListener );
DragGestureRecognizer dragRecognizer2 = dragSource.createDefaultDragGestureRecognizer( button2, DnDConstants.ACTION_MOVE, dndListener );
DragGestureRecognizer dragRecognizer3 = dragSource.createDefaultDragGestureRecognizer( label, DnDConstants.ACTION_MOVE, dndListener );
DragGestureRecognizer dragRecognizer4 = dragSource.createDefaultDragGestureRecognizer( checkbox, DnDConstants.ACTION_MOVE, dndListener );
frame.setBounds( 0, 200, 800, 400 );
frame.show();
}
}
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