new version with WorkingCopy Management

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / ui / dnd / ResourceTransferDragAdapter.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java
new file mode 100644 (file)
index 0000000..876bb0c
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java
@@ -0,0 +1,128 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.dnd;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import net.sourceforge.phpdt.internal.ui.IJavaStatusConstants;
+import net.sourceforge.phpdt.internal.ui.PHPUIMessages;
+import net.sourceforge.phpdt.internal.ui.util.SWTUtil;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.MultiStatus;
+import org.eclipse.jface.dialogs.ErrorDialog;
+import org.eclipse.jface.util.Assert;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DragSourceAdapter;
+import org.eclipse.swt.dnd.DragSourceEvent;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.part.ResourceTransfer;
+
+
+/**
+ * A drag adapter that transfers the current selection as </code>
+ * IResource</code>. Only those elements in the selection are part 
+ * of the transfer which can be converted into an <code>IResource
+ * </code>.
+ */
+public class ResourceTransferDragAdapter extends DragSourceAdapter implements TransferDragSourceListener {
+
+       private ISelectionProvider fProvider;
+
+       private static final List EMPTY_LIST= new ArrayList(0);
+
+       /**
+        * Creates a new ResourceTransferDragAdapter for the given selection
+        * provider.
+        * 
+        * @param provider the selection provider to access the viewer's selection
+        */
+       public ResourceTransferDragAdapter(ISelectionProvider provider) {
+               fProvider= provider;
+               Assert.isNotNull(fProvider);
+       }
+       
+       public Transfer getTransfer() {
+               return ResourceTransfer.getInstance();
+       }
+       
+       public void dragStart(DragSourceEvent event) {
+               event.doit= convertSelection().size() > 0;
+       }
+       
+       public void dragSetData(DragSourceEvent event) {
+               List resources= convertSelection();
+               event.data= (IResource[]) resources.toArray(new IResource[resources.size()]);
+       }
+       
+       public void dragFinished(DragSourceEvent event) {
+               if (!event.doit)
+                       return;
+
+               if (event.detail == DND.DROP_MOVE) {
+                       handleFinishedDropMove(event);
+               }       
+       }
+       
+       private List convertSelection() {
+               ISelection s= fProvider.getSelection();
+               if (!(s instanceof IStructuredSelection))
+                       return EMPTY_LIST;
+               IStructuredSelection selection= (IStructuredSelection)s;
+               List result= new ArrayList(selection.size());
+               for (Iterator iter= selection.iterator(); iter.hasNext();) {
+                       Object element= iter.next();
+                       if (element instanceof IAdaptable) {
+                               IAdaptable adaptable= (IAdaptable)element;
+                               IResource resource= (IResource)adaptable.getAdapter(IResource.class);
+                               if (resource != null)
+                                       result.add(resource);
+                       }
+               }
+               return result;
+       }
+       
+       private void handleFinishedDropMove(DragSourceEvent event) {
+               MultiStatus status= new MultiStatus(
+                       PHPeclipsePlugin.getPluginId(), 
+                       IJavaStatusConstants.INTERNAL_ERROR, 
+                       PHPUIMessages.getString("ResourceTransferDragAdapter.cannot_delete_resource"),  //$NON-NLS-1$
+                       null);
+               List resources= convertSelection();
+               for (Iterator iter= resources.iterator(); iter.hasNext();) {
+                       IResource resource= (IResource) iter.next();
+                       try {
+                               resource.delete(true, null);
+                       } catch (CoreException e) {
+                               status.add(e.getStatus());
+                       }
+               }
+               if (status.getChildren().length > 0) {
+                       Shell parent= SWTUtil.getShell(event.widget);
+                       ErrorDialog error= new ErrorDialog(parent, 
+                         PHPUIMessages.getString("ResourceTransferDragAdapter.moving_resource"),  //$NON-NLS-1$
+                         PHPUIMessages.getString("ResourceTransferDragAdapter.cannot_delete_files"),  //$NON-NLS-1$
+                               status, IStatus.ERROR);
+                       error.open();
+               }
+       }
+}
+