| /******************************************************************************* |
| * Copyright (c) 2015, 2018 vogella GmbH and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * vogella GmbH - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.tools.search; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import org.eclipse.core.commands.*; |
| import org.eclipse.jdt.core.*; |
| import org.eclipse.jface.dialogs.ErrorDialog; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.search.ui.NewSearchUI; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| public class FindUnusedMemberHandler extends AbstractHandler { |
| |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| ISelection sel = HandlerUtil.getCurrentSelection(event); |
| if (!(sel instanceof IStructuredSelection)) { |
| return null; |
| } |
| |
| IStructuredSelection currentSelection = HandlerUtil.getCurrentStructuredSelection(event); |
| |
| ArrayList<IJavaElement> allCus = new ArrayList<>(); |
| try { |
| for (Object element : currentSelection.toArray()) { |
| if (element instanceof IJavaElement) { |
| collectCompilationUnits((IJavaElement) element, allCus); |
| } |
| } |
| } catch (JavaModelException e) { |
| ErrorDialog.openError(HandlerUtil.getActiveShell(event), "Find Unused Members", //$NON-NLS-1$ |
| "Problem collecting compilation units", e.getStatus()); //$NON-NLS-1$ |
| return null; |
| } |
| |
| if (allCus.isEmpty()) { |
| MessageDialog.openInformation(HandlerUtil.getActiveShell(event), "Find Unused Members", //$NON-NLS-1$ |
| "No compilation units in 'internal' packages selected"); //$NON-NLS-1$ |
| return null; |
| } |
| |
| ICompilationUnit[] cus = allCus.toArray(new ICompilationUnit[allCus.size()]); |
| |
| NewSearchUI.runQueryInBackground(new FindUnusedSearchQuery(cus)); |
| |
| return null; |
| } |
| |
| private void collectCompilationUnits(IJavaElement current, Collection<IJavaElement> res) throws JavaModelException { |
| if (current instanceof IJavaProject || current instanceof IPackageFragmentRoot) { |
| handlePotentialCompilationUnitChildren(current, res); |
| } else if (current instanceof IPackageFragment) { |
| // uncomment this condition to only search API packages |
| // if (current.getElementName().indexOf("internal") > 0) { |
| // //$NON-NLS-1$ |
| handlePotentialCompilationUnitChildren(current, res); |
| // } |
| } else if (current instanceof ICompilationUnit) { |
| res.add(current); |
| } |
| } |
| |
| private void handlePotentialCompilationUnitChildren(IJavaElement current, Collection<IJavaElement> res) |
| throws JavaModelException { |
| IJavaElement[] children = ((IParent) current).getChildren(); |
| for (IJavaElement element : children) { |
| collectCompilationUnits(element, res); |
| } |
| } |
| |
| } |