diff options
Diffstat (limited to 'bundles/runtime/org.eclipse.fx.emf.edit.ui/src/org/eclipse/fx/emf/edit/ui/dnd/EditingDomainCellDropAdapter.java')
| -rwxr-xr-x | bundles/runtime/org.eclipse.fx.emf.edit.ui/src/org/eclipse/fx/emf/edit/ui/dnd/EditingDomainCellDropAdapter.java | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/bundles/runtime/org.eclipse.fx.emf.edit.ui/src/org/eclipse/fx/emf/edit/ui/dnd/EditingDomainCellDropAdapter.java b/bundles/runtime/org.eclipse.fx.emf.edit.ui/src/org/eclipse/fx/emf/edit/ui/dnd/EditingDomainCellDropAdapter.java new file mode 100755 index 000000000..331d949e6 --- /dev/null +++ b/bundles/runtime/org.eclipse.fx.emf.edit.ui/src/org/eclipse/fx/emf/edit/ui/dnd/EditingDomainCellDropAdapter.java @@ -0,0 +1,185 @@ +/*******************************************************************************
+ * Copyright (c) 2012 TESIS DYNAware GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Torsten Sommer <torsten.sommer@tesis.de> - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.fx.emf.edit.ui.dnd;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import javafx.event.EventHandler;
+import javafx.scene.control.Cell;
+import javafx.scene.control.TableCell;
+import javafx.scene.input.DragEvent;
+import javafx.scene.input.TransferMode;
+
+import org.eclipse.emf.common.command.Command;
+import org.eclipse.emf.edit.command.DragAndDropCommand;
+import org.eclipse.emf.edit.command.DragAndDropFeedback;
+import org.eclipse.emf.edit.domain.EditingDomain;
+import org.eclipse.fx.emf.edit.ui.AdapterFactoryCellFactory;
+import org.eclipse.fx.emf.edit.ui.AdapterFactoryCellFactory.ICellCreationListener;
+
+
+/**
+ * Allows to drop items into viewers backed by an
+ * {@link AdapterFactoryCellFactory} using a {@link LocalTransfer}.
+ */
+public class EditingDomainCellDropAdapter implements ICellCreationListener {
+
+ /**
+ * Handles the feedback to Drag & Drop events by styling or otherwise
+ * modifying the affected {@link Cell}
+ */
+ public interface IDnDFeedbackHandler {
+
+ void onFeedbackInsertBefore(Cell<?> cell);
+
+ void onFeedbackInsertAfter(Cell<?> cell);
+
+ void onFeedbackSelect(Cell<?> cell);
+
+ void onFeedbackNone(Cell<?> cell);
+
+ }
+
+ final EditingDomain editingDomain;
+ Command dndCommand;
+ IDnDFeedbackHandler feedbackHandler = new DefaultFeedbackHandler();
+
+ public EditingDomainCellDropAdapter(EditingDomain editingDomain) {
+ this.editingDomain = editingDomain;
+ }
+
+ public IDnDFeedbackHandler getFeedbackHandler() {
+ return feedbackHandler;
+ }
+
+ public void setFeedbackHandler(IDnDFeedbackHandler feedbackHandler) {
+ if (feedbackHandler == null)
+ throw new IllegalArgumentException("The feeback handler cannot be null");
+
+ this.feedbackHandler = feedbackHandler;
+ }
+
+ @Override
+ public void cellCreated(final Cell<?> cell) {
+
+ cell.setOnDragOver(new EventHandler<DragEvent>() {
+
+ @Override
+ public void handle(DragEvent event) {
+ Object item = cell.getItem();
+
+ Cell<?> node = getRowNode(cell);
+
+ double y = event.getY();
+ double height = cell.getLayoutBounds().getHeight();
+
+ float position = (float) (y / height);
+
+ Object object = LocalTransfer.INSTANCE.getObject();
+
+ Command command = DragAndDropCommand.create(editingDomain, item, position, DragAndDropFeedback.DROP_MOVE
+ | DragAndDropFeedback.DROP_LINK, DragAndDropFeedback.DROP_MOVE, (Collection<?>) object);
+
+ if (command.canExecute()) {
+ dndCommand = command;
+
+ if (command instanceof DragAndDropFeedback) {
+ DragAndDropFeedback dndFeedback = (DragAndDropFeedback) command;
+ int feedback = dndFeedback.getFeedback();
+
+ if ((feedback & DragAndDropFeedback.FEEDBACK_INSERT_BEFORE) != 0)
+ feedbackHandler.onFeedbackInsertBefore(node);
+ else if ((feedback & DragAndDropFeedback.FEEDBACK_INSERT_AFTER) != 0)
+ feedbackHandler.onFeedbackInsertAfter(node);
+ else if ((feedback & DragAndDropFeedback.FEEDBACK_SELECT) != 0)
+ feedbackHandler.onFeedbackSelect(node);
+ else
+ feedbackHandler.onFeedbackNone(node);
+
+ if (System.getProperties().getProperty("os.name").toLowerCase().contains("mac")) {
+ event.acceptTransferModes(TransferMode.COPY_OR_MOVE);
+ } else {
+ ArrayList<TransferMode> modes = new ArrayList<>();
+
+ if ((feedback & DragAndDropFeedback.DROP_COPY) != 0)
+ modes.add(TransferMode.COPY);
+ if ((feedback & DragAndDropFeedback.DROP_LINK) != 0)
+ modes.add(TransferMode.LINK);
+ if ((feedback & DragAndDropFeedback.DROP_MOVE) != 0)
+ modes.add(TransferMode.MOVE);
+
+ event.acceptTransferModes(modes.toArray(new TransferMode[modes.size()]));
+ }
+ }
+
+ } else {
+ dndCommand = null;
+ feedbackHandler.onFeedbackNone(node);
+ }
+
+ }
+
+ });
+
+ cell.setOnDragExited(new EventHandler<DragEvent>() {
+
+ @Override
+ public void handle(DragEvent event) {
+ feedbackHandler.onFeedbackNone(getRowNode(cell));
+ }
+
+ });
+
+ cell.setOnDragDropped(new EventHandler<DragEvent>() {
+ public void handle(DragEvent event) {
+ if (dndCommand != null)
+ editingDomain.getCommandStack().execute(dndCommand);
+
+ event.setDropCompleted(true);
+ event.consume();
+ }
+ });
+ }
+
+ Cell<?> getRowNode(final Cell<?> cell) {
+ return cell instanceof TableCell ? ((TableCell<?, ?>) cell).getTableRow() : cell;
+ }
+
+ /**
+ * This default implementation of {@link IDnDFeedbackHandler} adds a red
+ * line where the dragged {@link Cell} can be dropped.
+ */
+ public static class DefaultFeedbackHandler implements IDnDFeedbackHandler {
+
+ @Override
+ public void onFeedbackInsertBefore(Cell<?> cell) {
+ cell.setStyle("-fx-border-color: red transparent transparent transparent;");
+ }
+
+ @Override
+ public void onFeedbackInsertAfter(Cell<?> cell) {
+ cell.setStyle("-fx-border-color: transparent transparent red transparent;");
+ }
+
+ @Override
+ public void onFeedbackSelect(Cell<?> cell) {
+ cell.setStyle("-fx-border-color: transparent;");
+ }
+
+ @Override
+ public void onFeedbackNone(Cell<?> cell) {
+ cell.setStyle("-fx-border-color: transparent;");
+ }
+
+ }
+
+}
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