| /******************************************************************************* |
| * Copyright (c) 2003, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.navigator.internal.dnd; |
| |
| import java.util.ArrayList; |
| import java.util.Hashtable; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.jface.dialogs.IDialogSettings; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.window.Window; |
| import org.eclipse.swt.dnd.TransferData; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.navigator.ICommonDropActionDelegate; |
| import org.eclipse.ui.navigator.internal.NavigatorPlugin; |
| import org.eclipse.ui.part.IDropActionDelegate; |
| import org.eclipse.ui.part.PluginTransfer; |
| |
| /** |
| * |
| * <p> |
| * <strong>EXPERIMENTAL</strong>. This class or interface has been added as part of a work in |
| * progress. There is a guarantee neither that this API will work nor that it will remain the same. |
| * Please do not use this API without consulting with the Platform/UI team. |
| * </p> |
| * |
| * @since 3.2 |
| * |
| */ |
| public class PluginDropAction implements IDropActionDelegate { |
| |
| private ISerializer serializer; |
| |
| /** |
| * |
| */ |
| public PluginDropAction() { |
| super(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.part.IDropActionDelegate#run(java.lang.Object, java.lang.Object) |
| */ |
| public boolean run(Object sourceData, Object target) { |
| NavigatorSelectionSerializer.NavigatorSerializedSelection navSelection = (NavigatorSelectionSerializer.NavigatorSerializedSelection) getSerializer().fromByteArray((byte[]) sourceData); |
| CommonDropHandlerService registry = CommonDropHandlerService.getInstance(navSelection.viewerId); |
| |
| TransferData transferData = PluginTransfer.getInstance().getSupportedTypes()[0]; |
| String serializerId = null; |
| ICommonDropActionDelegate action = null; |
| List validatedList = new ArrayList(); |
| Hashtable descriptorToSerizliazerIDHash = new Hashtable(); |
| for (Iterator keyItr = navSelection.selectionMap.keySet().iterator(); keyItr.hasNext();) { |
| serializerId = keyItr.next().toString(); |
| DropHandlerDescriptor[] descriptors = registry.getDropHandlersBySerializerId(serializerId); |
| for (int i = 0; i < descriptors.length; i++) { |
| if (!validatedList.contains(descriptors[i])) { |
| IDropValidator validator = descriptors[i].getDropValidator(); |
| if (null == validator || validator.validateDrop(null, target, -1, transferData)) { |
| validatedList.add(descriptors[i]); |
| descriptorToSerizliazerIDHash.put(descriptors[i], serializerId); |
| } |
| } |
| } |
| } |
| IDialogSettings settings = NavigatorPlugin.getDefault().getDialogSettings(); |
| if (null == settings.get(NavigatorDropSelectionDialog.SKIP_ON_SINGLE_SELECTION)) { |
| settings.put(NavigatorDropSelectionDialog.SKIP_ON_SINGLE_SELECTION, true); |
| } |
| |
| boolean skipOnSingle = settings.getBoolean(NavigatorDropSelectionDialog.SKIP_ON_SINGLE_SELECTION); |
| |
| if (validatedList.size() > 0) { |
| DropHandlerDescriptor[] validatedDescriptors = new DropHandlerDescriptor[validatedList.size()]; |
| validatedList.toArray(validatedDescriptors); |
| DropHandlerDescriptor descriptorToUse = validatedDescriptors[0]; |
| |
| if (validatedDescriptors.length != 1 || !skipOnSingle) { |
| Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(); |
| NavigatorDropSelectionDialog dialog = new NavigatorDropSelectionDialog(shell, validatedDescriptors); |
| if (Window.OK == dialog.open()) { |
| descriptorToUse = dialog.getSelectedDescriptor(); |
| } else { |
| descriptorToUse = null; |
| } |
| } |
| if (null != descriptorToUse) { |
| serializerId = (String) descriptorToSerizliazerIDHash.get(descriptorToUse); |
| List objects = (List) navSelection.selectionMap.get(serializerId); |
| IStructuredSelection selection = new StructuredSelection(objects.toArray()); |
| action = CommonDropHandlerService.getInstance(navSelection.viewerId).getActionForSerializerId(serializerId); |
| action.run(selection, target); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * @return |
| */ |
| protected ISerializer getSerializer() { |
| if (serializer == null) |
| serializer = new NavigatorSelectionSerializer(); |
| return serializer; |
| } |
| |
| } |