| /******************************************************************************* |
| * 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 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.util; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.WorkbenchException; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IImportDeclaration; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IMember; |
| import org.eclipse.jdt.core.IOrdinaryClassFile; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.Signature; |
| |
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; |
| |
| import org.eclipse.jdt.ui.JavaUI; |
| import org.eclipse.jdt.ui.PreferenceConstants; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.JavaUIMessages; |
| import org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyViewPart; |
| |
| public class OpenTypeHierarchyUtil { |
| |
| private OpenTypeHierarchyUtil() { |
| } |
| |
| public static TypeHierarchyViewPart open(IJavaElement element, IWorkbenchWindow window) { |
| IJavaElement[] candidates= getCandidates(element); |
| if (candidates != null) { |
| return open(candidates, window); |
| } |
| return null; |
| } |
| |
| public static TypeHierarchyViewPart open(IJavaElement[] candidates, IWorkbenchWindow window) { |
| Assert.isTrue(candidates != null && candidates.length != 0); |
| |
| try { |
| if (PreferenceConstants.OPEN_TYPE_HIERARCHY_IN_PERSPECTIVE.equals(PreferenceConstants.getPreferenceStore().getString(PreferenceConstants.OPEN_TYPE_HIERARCHY))) { |
| return openInPerspective(window, candidates); |
| } else { |
| return openInViewPart(window, candidates); |
| } |
| |
| } catch (WorkbenchException e) { |
| ExceptionHandler.handle(e, window.getShell(), |
| JavaUIMessages.OpenTypeHierarchyUtil_error_open_perspective, |
| e.getMessage()); |
| } catch (JavaModelException e) { |
| ExceptionHandler.handle(e, window.getShell(), |
| JavaUIMessages.OpenTypeHierarchyUtil_error_open_editor, |
| e.getMessage()); |
| } |
| return null; |
| } |
| |
| private static TypeHierarchyViewPart openInViewPart(IWorkbenchWindow window, IJavaElement[] input) { |
| IWorkbenchPage page= window.getActivePage(); |
| try { |
| TypeHierarchyViewPart result= (TypeHierarchyViewPart) page.findView(JavaUI.ID_TYPE_HIERARCHY); |
| if (result != null) { |
| result.clearNeededRefresh(); // avoid refresh of old hierarchy on 'becomes visible' |
| } |
| result= (TypeHierarchyViewPart) page.showView(JavaUI.ID_TYPE_HIERARCHY); |
| result.setInputElements(input); |
| return result; |
| } catch (CoreException e) { |
| ExceptionHandler.handle(e, window.getShell(), |
| JavaUIMessages.OpenTypeHierarchyUtil_error_open_view, e.getMessage()); |
| } |
| return null; |
| } |
| |
| private static TypeHierarchyViewPart openInPerspective(IWorkbenchWindow window, IJavaElement[] input) throws WorkbenchException, JavaModelException { |
| IWorkbench workbench= JavaPlugin.getDefault().getWorkbench(); |
| IJavaElement perspectiveInput= input.length == 1 ? input[0] : null; |
| |
| if (perspectiveInput != null && input[0] instanceof IMember) { |
| if (input[0].getElementType() != IJavaElement.TYPE) { |
| perspectiveInput= ((IMember)input[0]).getDeclaringType(); |
| } else { |
| perspectiveInput= input[0]; |
| } |
| } |
| IWorkbenchPage page= workbench.showPerspective(JavaUI.ID_HIERARCHYPERSPECTIVE, window, perspectiveInput); |
| |
| TypeHierarchyViewPart part= (TypeHierarchyViewPart) page.findView(JavaUI.ID_TYPE_HIERARCHY); |
| if (part != null) { |
| part.clearNeededRefresh(); // avoid refresh of old hierarchy on 'becomes visible' |
| } |
| part= (TypeHierarchyViewPart) page.showView(JavaUI.ID_TYPE_HIERARCHY); |
| part.setInputElements(input); |
| if (perspectiveInput != null) { |
| if (page.getEditorReferences().length == 0) { |
| JavaUI.openInEditor(input[0], false, false); // only open when the perspective has been created |
| } |
| } |
| return part; |
| } |
| |
| |
| /** |
| * Converts the input to a possible input candidates |
| * @param input input |
| * @return the possible candidates |
| */ |
| public static IJavaElement[] getCandidates(Object input) { |
| if (!(input instanceof IJavaElement)) { |
| return null; |
| } |
| try { |
| IJavaElement elem= (IJavaElement) input; |
| switch (elem.getElementType()) { |
| case IJavaElement.INITIALIZER: |
| case IJavaElement.METHOD: |
| case IJavaElement.FIELD: |
| case IJavaElement.TYPE: |
| case IJavaElement.PACKAGE_FRAGMENT_ROOT: |
| case IJavaElement.JAVA_PROJECT: |
| return new IJavaElement[] { elem }; |
| case IJavaElement.PACKAGE_FRAGMENT: |
| if (((IPackageFragment)elem).containsJavaResources()) |
| return new IJavaElement[] {elem}; |
| break; |
| case IJavaElement.PACKAGE_DECLARATION: |
| return new IJavaElement[] { elem.getAncestor(IJavaElement.PACKAGE_FRAGMENT) }; |
| case IJavaElement.IMPORT_DECLARATION: |
| IImportDeclaration decl= (IImportDeclaration) elem; |
| if (decl.isOnDemand()) { |
| elem= JavaModelUtil.findTypeContainer(elem.getJavaProject(), Signature.getQualifier(elem.getElementName())); |
| } else { |
| elem= elem.getJavaProject().findType(elem.getElementName()); |
| } |
| if (elem == null) |
| return null; |
| return new IJavaElement[] {elem}; |
| |
| case IJavaElement.CLASS_FILE: |
| if (input instanceof IOrdinaryClassFile) { |
| return new IJavaElement[] { ((IOrdinaryClassFile) input).getType() }; |
| } |
| break; |
| case IJavaElement.COMPILATION_UNIT: { |
| ICompilationUnit cu= (ICompilationUnit) elem.getAncestor(IJavaElement.COMPILATION_UNIT); |
| if (cu != null) { |
| IType[] types= cu.getTypes(); |
| if (types.length > 0) { |
| return types; |
| } |
| } |
| break; |
| } |
| default: |
| } |
| } catch (JavaModelException e) { |
| JavaPlugin.log(e); |
| } |
| return null; |
| } |
| } |