| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.internal.ui.scriptview; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.MultiStatus; |
| import org.eclipse.core.runtime.SubProgressMonitor; |
| import org.eclipse.dltk.core.IModelElement; |
| import org.eclipse.dltk.core.IProjectFragment; |
| import org.eclipse.dltk.internal.corext.util.Resources; |
| import org.eclipse.dltk.ui.DLTKUIPlugin; |
| import org.eclipse.dltk.ui.util.ExceptionHandler; |
| import org.eclipse.jface.dialogs.ProgressMonitorDialog; |
| import org.eclipse.jface.operation.IRunnableWithProgress; |
| import org.eclipse.jface.util.TransferDragSourceListener; |
| 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.FileTransfer; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.actions.WorkspaceModifyOperation; |
| |
| /** |
| * Drag support class to allow dragging of files and folder from the packages |
| * view to another application. |
| */ |
| public class FileTransferDragAdapter extends DragSourceAdapter implements |
| TransferDragSourceListener { |
| |
| private ISelectionProvider fProvider; |
| |
| public FileTransferDragAdapter(ISelectionProvider provider) { |
| fProvider = provider; |
| Assert.isNotNull(fProvider); |
| } |
| |
| @Override |
| public Transfer getTransfer() { |
| return FileTransfer.getInstance(); |
| } |
| |
| @Override |
| public void dragStart(DragSourceEvent event) { |
| event.doit = isDragable(fProvider.getSelection()); |
| } |
| |
| private boolean isDragable(ISelection s) { |
| if (!(s instanceof IStructuredSelection)) { |
| return false; |
| } |
| IStructuredSelection selection = (IStructuredSelection) s; |
| for (Iterator iter = selection.iterator(); iter.hasNext();) { |
| Object element = iter.next(); |
| if (element instanceof IModelElement) { |
| IModelElement jElement = (IModelElement) element; |
| int type = jElement.getElementType(); |
| // valid elements are: roots, units and types. Don't allow |
| // dragging |
| // projects outside of eclipse |
| if (type != IModelElement.PROJECT_FRAGMENT |
| && type != IModelElement.SOURCE_MODULE |
| && type != IModelElement.TYPE) { |
| return false; |
| } |
| IProjectFragment root = (IProjectFragment) jElement |
| .getAncestor(IModelElement.PROJECT_FRAGMENT); |
| if (root != null && root.isArchive()) { |
| return false; |
| } |
| } else if (element instanceof IProject) { |
| return false; |
| } |
| } |
| List resources = convertIntoResources(selection); |
| return resources.size() == selection.size(); |
| } |
| |
| @Override |
| public void dragSetData(DragSourceEvent event) { |
| List elements = getResources(); |
| if (elements == null || elements.size() == 0) { |
| event.data = null; |
| return; |
| } |
| |
| event.data = FileTransferDragAdapter.getResourceLocations(elements); |
| } |
| |
| private static String[] getResourceLocations(List resources) { |
| return Resources.getLocationOSStrings((IResource[]) resources |
| .toArray(new IResource[resources.size()])); |
| } |
| |
| @Override |
| public void dragFinished(DragSourceEvent event) { |
| if (!event.doit) { |
| return; |
| } |
| |
| if (event.detail == DND.DROP_MOVE) { |
| // http://bugs.eclipse.org/bugs/show_bug.cgi?id=30543 |
| // handleDropMove(event); |
| } else if (event.detail == DND.DROP_TARGET_MOVE) { |
| handleRefresh(); |
| } |
| } |
| |
| /* package */void handleDropMove() { |
| final List elements = getResources(); |
| if (elements == null || elements.size() == 0) { |
| return; |
| } |
| |
| WorkspaceModifyOperation op = new WorkspaceModifyOperation() { |
| @Override |
| public void execute(IProgressMonitor monitor) throws CoreException { |
| try { |
| monitor.beginTask(ScriptMessages.DragAdapter_deleting, |
| elements.size()); |
| MultiStatus status = createMultiStatus(); |
| Iterator iter = elements.iterator(); |
| while (iter.hasNext()) { |
| IResource resource = (IResource) iter.next(); |
| try { |
| monitor |
| .subTask(resource.getFullPath() |
| .toOSString()); |
| resource.delete(true, null); |
| |
| } catch (CoreException e) { |
| status.add(e.getStatus()); |
| } finally { |
| monitor.worked(1); |
| } |
| } |
| if (!status.isOK()) { |
| throw new CoreException(status); |
| } |
| } finally { |
| monitor.done(); |
| } |
| } |
| }; |
| runOperation(op, true, false); |
| } |
| |
| private void handleRefresh() { |
| final Set roots = collectRoots(getResources()); |
| |
| WorkspaceModifyOperation op = new WorkspaceModifyOperation() { |
| @Override |
| public void execute(IProgressMonitor monitor) throws CoreException { |
| try { |
| monitor.beginTask(ScriptMessages.DragAdapter_refreshing, |
| roots.size()); |
| MultiStatus status = createMultiStatus(); |
| Iterator iter = roots.iterator(); |
| while (iter.hasNext()) { |
| IResource r = (IResource) iter.next(); |
| try { |
| r.refreshLocal(IResource.DEPTH_ONE, |
| new SubProgressMonitor(monitor, 1)); |
| } catch (CoreException e) { |
| status.add(e.getStatus()); |
| } |
| } |
| if (!status.isOK()) { |
| throw new CoreException(status); |
| } |
| } finally { |
| monitor.done(); |
| } |
| } |
| }; |
| |
| runOperation(op, true, false); |
| } |
| |
| protected Set collectRoots(final List elements) { |
| final Set roots = new HashSet(10); |
| |
| Iterator iter = elements.iterator(); |
| while (iter.hasNext()) { |
| IResource resource = (IResource) iter.next(); |
| IResource parent = resource.getParent(); |
| if (parent == null) { |
| roots.add(resource); |
| } else { |
| roots.add(parent); |
| } |
| } |
| return roots; |
| } |
| |
| private List getResources() { |
| ISelection s = fProvider.getSelection(); |
| if (!(s instanceof IStructuredSelection)) { |
| return null; |
| } |
| |
| return convertIntoResources((IStructuredSelection) s); |
| } |
| |
| private List convertIntoResources(IStructuredSelection selection) { |
| List result = new ArrayList(selection.size()); |
| for (Iterator iter = selection.iterator(); iter.hasNext();) { |
| Object o = iter.next(); |
| IResource r = null; |
| if (o instanceof IResource) { |
| r = (IResource) o; |
| } else if (o instanceof IAdaptable) { |
| r = ((IAdaptable) o).getAdapter(IResource.class); |
| } |
| // Only add resource for which we have a location |
| // in the local file system. |
| if (r != null && r.getLocation() != null) { |
| result.add(r); |
| } |
| } |
| return result; |
| } |
| |
| private MultiStatus createMultiStatus() { |
| return new MultiStatus(DLTKUIPlugin.getPluginId(), IStatus.OK, |
| ScriptMessages.DragAdapter_problem, null); |
| } |
| |
| private void runOperation(IRunnableWithProgress op, boolean fork, |
| boolean cancelable) { |
| try { |
| Shell parent = DLTKUIPlugin.getActiveWorkbenchShell(); |
| new ProgressMonitorDialog(parent).run(fork, cancelable, op); |
| } catch (InvocationTargetException e) { |
| String message = ScriptMessages.DragAdapter_problem; |
| String title = ScriptMessages.DragAdapter_problemTitle; |
| ExceptionHandler.handle(e, title, message); |
| } catch (InterruptedException e) { |
| // Do nothing. Operation has been canceled by user. |
| } |
| } |
| } |