Working file drop

diff --git a/org.argeo.cms.ui/src/org/argeo/cms/ui/fs/FileDrop.java b/org.argeo.cms.ui/src/org/argeo/cms/ui/fs/FileDrop.java
new file mode 100644 (file)
index 0000000..94b2bc2
--- /dev/null
+++ b/org.argeo.cms.ui/src/org/argeo/cms/ui/fs/FileDrop.java
@@ -0,0 +1,71 @@
+package org.argeo.cms.ui.fs;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.eclipse.rap.fileupload.FileDetails;
+import org.eclipse.rap.fileupload.FileUploadHandler;
+import org.eclipse.rap.fileupload.FileUploadReceiver;
+import org.eclipse.rap.rwt.RWT;
+import org.eclipse.rap.rwt.client.ClientFile;
+import org.eclipse.rap.rwt.client.service.ClientFileUploader;
+import org.eclipse.rap.rwt.dnd.ClientFileTransfer;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DropTarget;
+import org.eclipse.swt.dnd.DropTargetAdapter;
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.widgets.Control;
+
+public class FileDrop {
+       private final static Log log = LogFactory.getLog(FileDrop.class);
+
+       public void createDropTarget(Control control) {
+               DropTarget dropTarget = new DropTarget(control, DND.DROP_MOVE | DND.DROP_COPY);
+               dropTarget.setTransfer(new Transfer[] { ClientFileTransfer.getInstance() });
+               dropTarget.addDropListener(new DropTargetAdapter() {
+                       private static final long serialVersionUID = 5361645765549463168L;
+
+                       @Override
+                       public void dropAccept(DropTargetEvent event) {
+                               if (!ClientFileTransfer.getInstance().isSupportedType(event.currentDataType)) {
+                                       event.detail = DND.DROP_NONE;
+                               }
+                       }
+
+                       @Override
+                       public void drop(DropTargetEvent event) {
+                               handleFileDrop(control, (ClientFile[]) event.data);
+                       }
+               });
+       }
+
+       private void handleFileDrop(Control control, ClientFile[] clientFiles) {
+               ClientFileUploader service = RWT.getClient().getService(ClientFileUploader.class);
+//             DiskFileUploadReceiver receiver = new DiskFileUploadReceiver();
+               FileUploadReceiver receiver = new FileUploadReceiver() {
+
+                       @Override
+                       public void receive(InputStream stream, FileDetails details) throws IOException {
+                               if (log.isDebugEnabled())
+                                       log.debug("Process upload of " + details.getFileName() + " (" + details.getContentType() + ")");
+                               control.getDisplay()
+                                               .syncExec(() -> processUpload(stream, details.getFileName(), details.getContentType()));
+                       }
+               };
+               FileUploadHandler handler = new FileUploadHandler(receiver);
+//                 handler.setMaxFileSize( sizeLimit );
+//                 handler.setUploadTimeLimit( timeLimit );
+               service.submit(handler.getUploadUrl(), clientFiles);
+//             for (File file : receiver.getTargetFiles()) {
+//                     paths.add(file.toPath());
+//             }
+       }
+
+       /** Executed in UI thread */
+       protected void processUpload(InputStream in, String fileName, String contetnType) {
+
+       }
+}