refactory: added UI removed from core plugin.

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

diff --git a/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java
new file mode 100644 (file)
index 0000000..8157ce9
--- /dev/null
+++ b/net.sourceforge.phpeclipse.ui/src/net/sourceforge/phpdt/internal/ui/dnd/ResourceTransferDragAdapter.java
@@ -0,0 +1,134 @@
+/*******************************************************************************
+ * 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.ui.WebUI;
+//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(
+                               WebUI.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();
+               }
+       }
+}