public void init() {
DragSource dragSource = DragSource.getDefaultDragSource();
// 将srcLabel转换成拖放源，它能接受复制、移动两种操作
dragSource.createDefaultDragGestureRecognizer(
srcLabel,
DnDConstants.ACTION_COPY_OR_MOVE,
new DragGestureListener() {
public void dragGestureRecognized(DragGestureEvent event) {
// 将JLabel里的文本信息包装成Transferable对象
String txt = srcLabel.getText();
Transferable transferable = new StringSelection(txt);
// 继续拖放操作,拖放过程中使用手状光标
event.startDrag(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR), transferable);
}
});
jf.add(new JScrollPane(srcLabel));
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.pack();
jf.setVisible(true);
}
/**
* Create a new, empty, not-visible TaxRef window. Really just activates the setup frame and setup
* memory monitor components, then starts things off.
*/
public MainFrame() {
setupMemoryMonitor();
// Set up the main frame.
mainFrame = new JFrame(basicTitle);
mainFrame.setJMenuBar(setupMenuBar());
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Set up the JTable.
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setSelectionBackground(COLOR_SELECTION_BACKGROUND);
table.setShowGrid(true);
// Add a blank table model so that the component renders properly on
// startup.
table.setModel(blankDataModel);
// Add a list selection listener so we can tell the matchInfoPanel
// that a new name was selected.
table
.getSelectionModel()
.addListSelectionListener(
new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent e) {
if (currentCSV == null) return;
int row = table.getSelectedRow();
int column = table.getSelectedColumn();
columnInfoPanel.columnChanged(column);
Object o = table.getModel().getValueAt(row, column);
if (Name.class.isAssignableFrom(o.getClass())) {
matchInfoPanel.nameSelected(currentCSV.getRowIndex(), (Name) o, row, column);
} else {
matchInfoPanel.nameSelected(currentCSV.getRowIndex(), null, -1, -1);
}
}
});
// Set up the left panel (table + matchInfoPanel)
JPanel leftPanel = new JPanel();
matchInfoPanel = new MatchInformationPanel(this);
leftPanel.setLayout(new BorderLayout());
leftPanel.add(matchInfoPanel, BorderLayout.SOUTH);
leftPanel.add(new JScrollPane(table));
// Set up the right panel (columnInfoPanel)
JPanel rightPanel = new JPanel();
columnInfoPanel = new ColumnInformationPanel(this);
progressBar.setStringPainted(true);
rightPanel.setLayout(new BorderLayout());
rightPanel.add(columnInfoPanel);
rightPanel.add(progressBar, BorderLayout.SOUTH);
// Set up a JSplitPane to split the panels up.
JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, false, leftPanel, rightPanel);
split.setResizeWeight(1);
mainFrame.add(split);
mainFrame.pack();
// Set up a drop target so we can pick up files
mainFrame.setDropTarget(
new DropTarget(
mainFrame,
new DropTargetAdapter() {
@Override
public void dragEnter(DropTargetDragEvent dtde) {
// Accept any drags.
dtde.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
}
@Override
public void dragOver(DropTargetDragEvent dtde) {}
@Override
public void dropActionChanged(DropTargetDragEvent dtde) {}
@Override
public void dragExit(DropTargetEvent dte) {}
@Override
public void drop(DropTargetDropEvent dtde) {
// Accept a drop as long as its File List.
if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
dtde.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
Transferable t = dtde.getTransferable();
try {
java.util.List<File> files =
(java.util.List<File>) t.getTransferData(DataFlavor.javaFileListFlavor);
// If we're given multiple files, pick up only the last file and load that.
File f = files.get(files.size() - 1);
loadFile(f, DarwinCSV.FILE_CSV_DELIMITED);
} catch (UnsupportedFlavorException ex) {
dtde.dropComplete(false);
} catch (IOException ex) {
dtde.dropComplete(false);
}
}
}
}));
}