src/camidion/chordhelper/mididevice/MidiDeviceTreeView.java

   1 package camidion.chordhelper.mididevice;
   2
   3 import java.awt.Component;
   4 import java.awt.datatransfer.DataFlavor;
   5 import java.awt.datatransfer.Transferable;
   6 import java.awt.dnd.DnDConstants;
   7 import java.awt.dnd.DragGestureEvent;
   8 import java.awt.dnd.DragGestureListener;
   9 import java.awt.dnd.DragSource;
  10
  11 import javax.swing.JTree;
  12 import javax.swing.event.InternalFrameAdapter;
  13 import javax.swing.event.InternalFrameEvent;
  14 import javax.swing.event.InternalFrameListener;
  15 import javax.swing.tree.DefaultTreeCellRenderer;
  16 import javax.swing.tree.TreeModel;
  17
  18 /**
  19  * MIDIデバイスツリービュー
  20  */
  21 public class MidiDeviceTreeView extends JTree
  22 {
  23         /**
  24          *      {@link MidiDeviceFrame} を閉じたことを検知して再描画するためのリスナー
  25          */
  26         public final InternalFrameListener midiDeviceFrameListener = new InternalFrameAdapter() {
  27                 @Override
  28                 public void internalFrameClosing(InternalFrameEvent e) { repaint(); }
  29         };
  30
  31         public static final DataFlavor TREE_MODEL_FLAVOR = new DataFlavor(TreeModel.class, "TreeModel");
  32
  33         private Transferable draggingObject = new Transferable() {
  34                 private DataFlavor flavors[] = {TREE_MODEL_FLAVOR};
  35                 @Override
  36                 public Object getTransferData(DataFlavor flavor) {
  37                         return getLastSelectedPathComponent();
  38                 }
  39                 @Override
  40                 public DataFlavor[] getTransferDataFlavors() { return flavors; }
  41                 @Override
  42                 public boolean isDataFlavorSupported(DataFlavor flavor) {
  43                         return flavor.equals(TREE_MODEL_FLAVOR);
  44                 }
  45         };
  46         /**
  47          * MIDIデバイスツリービューを構築します。
  48          * @param model このビューにデータを提供するモデル
  49          */
  50         public MidiDeviceTreeView(MidiDeviceTreeModel model) {
  51                 super(model);
  52                 (new DragSource()).createDefaultDragGestureRecognizer(
  53                         this, DnDConstants.ACTION_COPY_OR_MOVE, new DragGestureListener() {
  54                                 @Override
  55                                 public void dragGestureRecognized(DragGestureEvent dge) {
  56                                         if( (dge.getDragAction() & DnDConstants.ACTION_COPY_OR_MOVE) == 0 ) return;
  57                                         dge.startDrag(DragSource.DefaultMoveDrop, draggingObject, null);
  58                                 }
  59                         }
  60                 );
  61                 setCellRenderer(new DefaultTreeCellRenderer() {
  62                         @Override
  63                         public Component getTreeCellRendererComponent(JTree tree, Object value,
  64                                         boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus)
  65                         {
  66                                 super.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
  67                                 if(leaf) {
  68                                         setIcon(MidiConnecterListView.MIDI_CONNECTER_ICON);
  69                                         setDisabledIcon(MidiConnecterListView.MIDI_CONNECTER_ICON);
  70                                         setEnabled( ! ((MidiConnecterListModel)value).getMidiDevice().isOpen() );
  71                                 }
  72                                 return this;
  73                         }
  74                 });
  75         }
  76 }