--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.diagram.participant;\r
+\r
+import java.awt.datatransfer.Transferable;\r
+import java.awt.datatransfer.UnsupportedFlavorException;\r
+import java.awt.dnd.DnDConstants;\r
+import java.awt.dnd.DropTargetDragEvent;\r
+import java.awt.dnd.DropTargetDropEvent;\r
+import java.awt.dnd.DropTargetEvent;\r
+import java.awt.geom.Point2D;\r
+import java.io.IOException;\r
+import java.util.List;\r
+\r
+import org.eclipse.jface.viewers.IStructuredSelection;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.Logger;\r
+import org.simantics.diagram.adapter.GraphToDiagramSynchronizer;\r
+import org.simantics.g2d.diagram.DiagramHints;\r
+import org.simantics.g2d.diagram.DiagramMutator;\r
+import org.simantics.g2d.diagram.DiagramUtils;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.diagram.participant.AbstractDiagramParticipant;\r
+import org.simantics.g2d.dnd.DnDHints;\r
+import org.simantics.g2d.dnd.ElementClassDragItem;\r
+import org.simantics.g2d.dnd.IDnDContext;\r
+import org.simantics.g2d.dnd.IDragItem;\r
+import org.simantics.g2d.dnd.IDropTargetParticipant;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.ElementUtils;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.scenegraph.g2d.snap.ISnapAdvisor;\r
+import org.simantics.ui.dnd.LocalObjectTransfer;\r
+import org.simantics.ui.dnd.LocalObjectTransferable;\r
+import org.simantics.utils.datastructures.Callback;\r
+import org.simantics.utils.logging.TimeLogger;\r
+\r
+abstract public class PopulateSelectionDropParticipant extends AbstractDiagramParticipant implements IDropTargetParticipant {\r
+\r
+ public abstract List<ElementClassDragItem> getElements(Session session, IStructuredSelection selection) throws DatabaseException;\r
+ \r
+ protected GraphToDiagramSynchronizer synchronizer;\r
+\r
+ public PopulateSelectionDropParticipant(GraphToDiagramSynchronizer synchronizer) {\r
+ this.synchronizer = synchronizer;\r
+ }\r
+\r
+ @Override\r
+ public void dragEnter(DropTargetDragEvent dtde, final IDnDContext dp) {\r
+\r
+ Transferable tr = dtde.getTransferable();\r
+\r
+ if (tr.isDataFlavorSupported(LocalObjectTransferable.FLAVOR)) {\r
+\r
+ Session session = synchronizer.getSession();\r
+\r
+ // System.out.println("joo");\r
+ Object obj = null;\r
+\r
+ // This must be done to have SWT transfer set the source data\r
+ try {\r
+ \r
+ obj = tr.getTransferData(LocalObjectTransferable.FLAVOR);\r
+ //System.out.println("GOT FROM AWT: " + obj);\r
+\r
+ // Check SWT\r
+ if (!(obj instanceof IStructuredSelection)) {\r
+ obj = LocalObjectTransfer.getTransfer().getObject();\r
+ //System.out.println("GOT FROM SWT: " + obj);\r
+ }\r
+\r
+ if (obj instanceof IStructuredSelection) {\r
+\r
+ IStructuredSelection sel = (IStructuredSelection) obj;\r
+ if (!sel.isEmpty()) {\r
+ \r
+ List<ElementClassDragItem> items = getElements(session, sel);\r
+\r
+ for(ElementClassDragItem item : items) {\r
+ dp.add(item);\r
+ }\r
+\r
+ dp.getHints().setHint(DnDHints.KEY_DND_GRID_COLUMNS, Integer.valueOf(1));\r
+\r
+ }\r
+\r
+ }\r
+\r
+ } catch (UnsupportedFlavorException e) {\r
+ Logger.defaultLogError(e);\r
+ } catch (IOException e) {\r
+ Logger.defaultLogError(e);\r
+ } catch (DatabaseException e) {\r
+ Logger.defaultLogError(e);\r
+ }\r
+\r
+ }\r
+\r
+ dtde.acceptDrag(DnDConstants.ACTION_COPY);\r
+\r
+ }\r
+\r
+ @Override\r
+ public void drop(DropTargetDropEvent dtde, final IDnDContext dp) {\r
+ TimeLogger.resetTimeAndLog(getClass(), "drop");\r
+ \r
+ final IDiagram d = getHint(DiagramHints.KEY_DIAGRAM);\r
+ if (d == null)\r
+ return;\r
+\r
+ DiagramUtils.mutateDiagram(d, m -> {\r
+ IDragItem items[] = dp.toArray();\r
+\r
+ for (IDragItem i : items) {\r
+ if (!(i instanceof ElementClassDragItem))\r
+ continue;\r
+\r
+ ElementClassDragItem res = (ElementClassDragItem) i;\r
+ ElementClass ec = res.getElementClass();\r
+\r
+ Point2D pos = dp.getItemPosition(i);\r
+ // System.out.println(pos);\r
+ assert (pos != null);\r
+\r
+ IElement element = m.newElement(ec);\r
+ element.setHints(res.getHintContext().getHints());\r
+\r
+ ISnapAdvisor snapAdvisor = getContext().getHintStack().getHint(DiagramHints.SNAP_ADVISOR);\r
+ if(snapAdvisor != null)\r
+ snapAdvisor.snap(pos);\r
+ ElementUtils.setPos(element, pos);\r
+\r
+ // Remove only the drag items we've processed.\r
+ dp.remove(i);\r
+ }\r
+ });\r
+\r
+ synchronizer.getCanvasContext().getContentContext().setDirty();\r
+ \r
+ }\r
+\r
+ @Override\r
+ public void dragOver(DropTargetDragEvent dtde, IDnDContext dp) {\r
+ }\r
+ \r
+ @Override\r
+ public void dragExit(DropTargetEvent dte, IDnDContext dp) {\r
+ }\r
+ \r
+ @Override\r
+ public void dropActionChanged(DropTargetDragEvent dtde, IDnDContext dp) {\r
+ }\r
+\r
+ @Override\r
+ public int getAllowedOps() {\r
+ return 0;\r
+ }\r
+ \r
+ @Override\r
+ public double getPriority() {\r
+ return 9.1;\r
+ }\r
+ \r
+}
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Code Review / simantics / platform.git / blobdiff