| /*=============================================================================# |
| # Copyright (c) 2009, 2021 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.r.ui.util; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.ITreeSelection; |
| import org.eclipse.jface.viewers.TreePath; |
| import org.eclipse.swt.dnd.TextTransfer; |
| import org.eclipse.swt.dnd.Transfer; |
| |
| import org.eclipse.statet.jcommons.collections.CollectionUtils; |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| import org.eclipse.statet.ecommons.models.core.util.ElementPartition; |
| import org.eclipse.statet.ecommons.ui.components.StatusInfo; |
| import org.eclipse.statet.ecommons.ui.util.DNDUtils; |
| import org.eclipse.statet.ecommons.ui.util.UIAccess; |
| import org.eclipse.statet.ecommons.ui.util.ViewActionUtil; |
| |
| import org.eclipse.statet.r.core.model.RElementName; |
| |
| |
| @NonNullByDefault |
| public class CopyRElementNameHandler extends AbstractHandler { |
| |
| |
| private final ViewActionUtil actionUtil; |
| |
| |
| public CopyRElementNameHandler(final ViewActionUtil actionUtil) { |
| this.actionUtil= actionUtil; |
| } |
| |
| |
| private ITreeSelection getSelection() { |
| final ISelectionProvider selectionProvider= this.actionUtil.getSelectionProvider(); |
| return (ITreeSelection) selectionProvider.getSelection(); |
| } |
| |
| protected boolean isValidSelection(final ITreeSelection selection) { |
| if (selection == null || selection.isEmpty()) { |
| return false; |
| } |
| for (final Object element : selection.toList()) { |
| if (element instanceof ElementPartition) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| protected @Nullable RElementName getRElementName(final TreePath treePath, |
| final ITreeSelection selection) { |
| return RElementInputUtils.getRElementName(treePath, selection); |
| } |
| |
| |
| @Override |
| public void setEnabled(final @Nullable Object evaluationContext) { |
| setBaseEnabled(isValidSelection(getSelection())); |
| } |
| |
| @Override |
| public @Nullable Object execute(final ExecutionEvent event) throws ExecutionException { |
| if (!UIAccess.isOkToUse(this.actionUtil.getControl())) { |
| return null; |
| } |
| final ITreeSelection selection= getSelection(); |
| if (!isValidSelection(selection)) { |
| return null; |
| } |
| |
| final String text= createData(selection); |
| if (text != null) { |
| copy(text); |
| } |
| |
| return null; |
| } |
| |
| protected @Nullable String createData(final ITreeSelection selection) { |
| final TreePath[] treePaths= selection.getPaths(); |
| final List<String> names= new ArrayList<>(selection.size()); |
| for (int i= 0; i < treePaths.length; i++) { |
| final RElementName elementName= getRElementName(treePaths[i], selection); |
| final String name= (elementName != null) ? elementName.getDisplayName() : null; |
| if (name != null) { |
| names.add(name); |
| } |
| else { |
| this.actionUtil.getStatusLine().setMessage(new StatusInfo(IStatus.WARNING, |
| "Could not copy element name for the selected objects." )); |
| return null; |
| } |
| } |
| return (names.size() == 1) ? |
| names.get(0) : CollectionUtils.toString(names, ", "); //$NON-NLS-1$ |
| } |
| |
| private void copy(final String text) { |
| DNDUtils.setContent(this.actionUtil.getClipboard(), |
| new String[] { text }, |
| new Transfer[] { TextTransfer.getInstance() } ); |
| } |
| |
| } |