Move RAP specific to subdirectory

[lgpl/argeo-commons.git] / rap / org.argeo.swt.specific.rap / src / org / argeo / eclipse / ui / specific / FileDropAdapter.java

diff --git a/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/FileDropAdapter.java b/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/FileDropAdapter.java
new file mode 100644 (file)
index 0000000..f9ca816
--- /dev/null
+++ b/rap/org.argeo.swt.specific.rap/src/org/argeo/eclipse/ui/specific/FileDropAdapter.java
@@ -0,0 +1,73 @@
+package org.argeo.eclipse.ui.specific;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+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;
+
+/** Configures a {@link Control} to receive files drop from the client OS. */
+public class FileDropAdapter {
+
+       public void prepareDropTarget(Control control, DropTarget dropTarget) {
+               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, event);
+                       }
+               });
+       }
+
+       public void handleFileDrop(Control control, DropTargetEvent event) {
+               ClientFile[] clientFiles = (ClientFile[]) event.data;
+               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 {
+                               control.getDisplay().syncExec(() -> {
+                                       try {
+                                               processUpload(stream, details.getFileName(), details.getContentType());
+                                       } catch (IOException e) {
+                                               throw new IllegalStateException("Cannot process upload of " + details.getFileName(), e);
+                                       }
+                               });
+                       }
+               };
+               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 contentType) throws IOException {
+
+       }
+
+}