Java 类com.intellij.openapi.editor.markup.GutterDraggableObject 实例源码

@Override
public boolean canImport(@Nonnull JComponent comp, @Nonnull DataFlavor[] transferFlavors) {
  Editor editor = getEditor(comp);
  final EditorDropHandler dropHandler = ((EditorImpl)editor).getDropHandler();
  if (dropHandler != null && dropHandler.canHandleDrop(transferFlavors)) {
    return true;
  }

  //should be used a better representation class
  if (Registry.is("debugger.click.disable.breakpoints") && ArrayUtil.contains(GutterDraggableObject.flavor, transferFlavors)) {
    return true;
  }

  if (editor.isViewer()) return false;

  int offset = editor.getCaretModel().getOffset();
  if (editor.getDocument().getRangeGuard(offset, offset) != null) return false;

  return ArrayUtil.contains(DataFlavor.stringFlavor, transferFlavors);
}

@Nullable
protected GutterDraggableObject createBreakpointDraggableObject() {
  return null;
}

@Override
public GutterDraggableObject getDraggableObject() {
  return createBreakpointDraggableObject();
}

@Nullable
protected GutterDraggableObject createBreakpointDraggableObject() {
  return null;
}

@Override
public GutterDraggableObject getDraggableObject() {
  return createBreakpointDraggableObject();
}

static boolean handleDrop(@Nonnull EditorImpl editor, @Nonnull final Transferable t, int dropAction) {
  final EditorDropHandler dropHandler = editor.getDropHandler();

  if (Registry.is("debugger.click.disable.breakpoints")) {
    try {
      if (t.isDataFlavorSupported(GutterDraggableObject.flavor)) {
        Object attachedObject = t.getTransferData(GutterDraggableObject.flavor);
        if (attachedObject instanceof GutterIconRenderer) {
          GutterDraggableObject object = ((GutterIconRenderer)attachedObject).getDraggableObject();
          if (object != null) {
            object.remove();
            Point mouseLocationOnScreen = MouseInfo.getPointerInfo().getLocation();
            JComponent editorComponent = editor.getComponent();
            Point editorComponentLocationOnScreen = editorComponent.getLocationOnScreen();
            IdeGlassPaneUtil.installPainter(editorComponent, new ExplosionPainter(
                    new Point(mouseLocationOnScreen.x - editorComponentLocationOnScreen.x, mouseLocationOnScreen.y - editorComponentLocationOnScreen.y),
                    editor.getGutterComponentEx().getDragImage((GutterIconRenderer)attachedObject)), editor.getDisposable());
            return true;
          }
        }
      }
    }
    catch (UnsupportedFlavorException | IOException e) {
      LOG.warn(e);
    }
  }

  if (dropHandler != null && dropHandler.canHandleDrop(t.getTransferDataFlavors())) {
    dropHandler.handleDrop(t, editor.getProject(), null, dropAction);
    return true;
  }

  final int caretOffset = editor.getCaretModel().getOffset();
  if (editor.myDraggedRange != null && editor.myDraggedRange.getStartOffset() <= caretOffset && caretOffset < editor.myDraggedRange.getEndOffset()) {
    return false;
  }

  if (editor.myDraggedRange != null) {
    editor.getCaretModel().moveToOffset(editor.mySavedCaretOffsetForDNDUndoHack);
  }

  CommandProcessor.getInstance().executeCommand(editor.myProject, () -> {
    try {
      editor.getSelectionModel().removeSelection();

      final int offset;
      if (editor.myDraggedRange != null) {
        editor.getCaretModel().moveToOffset(caretOffset);
        offset = caretOffset;
      }
      else {
        offset = editor.getCaretModel().getOffset();
      }
      if (editor.getDocument().getRangeGuard(offset, offset) != null) {
        return;
      }

      editor.putUserData(LAST_PASTED_REGION, null);

      EditorActionHandler pasteHandler = EditorActionManager.getInstance().getActionHandler(IdeActions.ACTION_EDITOR_PASTE);
      LOG.assertTrue(pasteHandler instanceof EditorTextInsertHandler, String.valueOf(pasteHandler));
      ((EditorTextInsertHandler)pasteHandler).execute(editor, editor.getDataContext(), () -> t);

      TextRange range = editor.getUserData(LAST_PASTED_REGION);
      if (range != null) {
        editor.getCaretModel().moveToOffset(range.getStartOffset());
        editor.getSelectionModel().setSelection(range.getStartOffset(), range.getEndOffset());
      }
    }
    catch (Exception exception) {
      LOG.error(exception);
    }
  }, EditorBundle.message("paste.command.name"), DND_COMMAND_KEY, UndoConfirmationPolicy.DEFAULT, editor.getDocument());

  return true;
}

@Nullable
protected GutterDraggableObject createBreakpointDraggableObject() {
  return null;
}

@Override
public GutterDraggableObject getDraggableObject() {
  return createBreakpointDraggableObject();
}