| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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: |
| * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation |
| * (report 36180: Callers/Callees view) |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.callhierarchy; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| |
| import org.eclipse.jface.dialogs.ErrorDialog; |
| import org.eclipse.jface.text.ITextSelection; |
| |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.core.IClassFile; |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.ui.actions.SelectionDispatchAction; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.IJavaStatusConstants; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.actions.ActionMessages; |
| import org.eclipse.jdt.internal.ui.actions.ActionUtil; |
| import org.eclipse.jdt.internal.ui.actions.SelectionConverter; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * This action opens a call hierarchy on the selected method. |
| * <p> |
| * The action is applicable to selections containing elements of type |
| * <code>IMethod</code>. |
| */ |
| public class OpenCallHierarchyAction extends SelectionDispatchAction { |
| |
| private JavaEditor fEditor; |
| |
| /** |
| * Creates a new <code>OpenCallHierarchyAction</code>. The action requires |
| * that the selection provided by the site's selection provider is of type <code> |
| * org.eclipse.jface.viewers.IStructuredSelection</code>. |
| * |
| * @param site the site providing context information for this action |
| */ |
| public OpenCallHierarchyAction(IWorkbenchSite site) { |
| super(site); |
| setText(CallHierarchyMessages.OpenCallHierarchyAction_label); |
| setToolTipText(CallHierarchyMessages.OpenCallHierarchyAction_tooltip); |
| setDescription(CallHierarchyMessages.OpenCallHierarchyAction_description); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_OPEN_ACTION); |
| |
| } |
| |
| /** |
| * Creates a new <code>OpenCallHierarchyAction</code>. The action requires |
| * that the selection provided by the given selection provider is of type <code> |
| * org.eclipse.jface.viewers.IStructuredSelection</code>. |
| * |
| * @param site the site providing context information for this action |
| * @param provider a special selection provider which is used instead |
| * of the site's selection provider or <code>null</code> to use the site's |
| * selection provider |
| * |
| * @since 3.2 |
| * @deprecated Use {@link #setSpecialSelectionProvider(ISelectionProvider)} instead. This API will be |
| * removed after 3.2 M5. |
| */ |
| public OpenCallHierarchyAction(IWorkbenchSite site, ISelectionProvider provider) { |
| this(site); |
| setSpecialSelectionProvider(provider); |
| } |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call this constructor. |
| */ |
| public OpenCallHierarchyAction(JavaEditor editor) { |
| this(editor.getEditorSite()); |
| fEditor= editor; |
| setEnabled(SelectionConverter.canOperateOn(fEditor)); |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on SelectionDispatchAction. |
| */ |
| public void selectionChanged(ITextSelection selection) { |
| // Do nothing |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on SelectionDispatchAction. |
| */ |
| public void selectionChanged(IStructuredSelection selection) { |
| setEnabled(isEnabled(selection)); |
| } |
| |
| private boolean isEnabled(IStructuredSelection selection) { |
| if (selection.size() != 1) |
| return false; |
| Object input= selection.getFirstElement(); |
| if (!(input instanceof IJavaElement)) |
| return false; |
| switch (((IJavaElement)input).getElementType()) { |
| case IJavaElement.METHOD: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on SelectionDispatchAction. |
| */ |
| public void run(ITextSelection selection) { |
| IJavaElement input= SelectionConverter.getInput(fEditor); |
| if (!ActionUtil.isProcessable(getShell(), input)) |
| return; |
| |
| try { |
| IJavaElement[] elements= SelectionConverter.codeResolveOrInputForked(fEditor); |
| if (elements == null) |
| return; |
| List candidates= new ArrayList(elements.length); |
| for (int i= 0; i < elements.length; i++) { |
| IJavaElement[] resolvedElements= CallHierarchyUI.getCandidates(elements[i]); |
| if (resolvedElements != null) |
| candidates.addAll(Arrays.asList(resolvedElements)); |
| } |
| if (candidates.isEmpty()) { |
| IJavaElement enclosingMethod= getEnclosingMethod(input, selection); |
| if (enclosingMethod != null) { |
| candidates.add(enclosingMethod); |
| } |
| } |
| run((IJavaElement[])candidates.toArray(new IJavaElement[candidates.size()])); |
| } catch (InvocationTargetException e) { |
| ExceptionHandler.handle(e, getShell(), getErrorDialogTitle(), ActionMessages.SelectionConverter_codeResolve_failed); |
| } catch (InterruptedException e) { |
| // cancelled |
| } |
| } |
| |
| private IJavaElement getEnclosingMethod(IJavaElement input, ITextSelection selection) { |
| IJavaElement enclosingElement= null; |
| try { |
| switch (input.getElementType()) { |
| case IJavaElement.CLASS_FILE : |
| IClassFile classFile= (IClassFile) input.getAncestor(IJavaElement.CLASS_FILE); |
| if (classFile != null) { |
| enclosingElement= classFile.getElementAt(selection.getOffset()); |
| } |
| break; |
| case IJavaElement.COMPILATION_UNIT : |
| ICompilationUnit cu= (ICompilationUnit) input.getAncestor(IJavaElement.COMPILATION_UNIT); |
| if (cu != null) { |
| enclosingElement= cu.getElementAt(selection.getOffset()); |
| } |
| break; |
| } |
| if (enclosingElement != null && enclosingElement.getElementType() == IJavaElement.METHOD) { |
| return enclosingElement; |
| } |
| } catch (JavaModelException e) { |
| JavaPlugin.log(e); |
| } |
| |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on SelectionDispatchAction. |
| */ |
| public void run(IStructuredSelection selection) { |
| if (selection.size() != 1) |
| return; |
| Object input= selection.getFirstElement(); |
| |
| if (!(input instanceof IJavaElement)) { |
| IStatus status= createStatus(CallHierarchyMessages.OpenCallHierarchyAction_messages_no_java_element); |
| openErrorDialog(status); |
| return; |
| } |
| IJavaElement element= (IJavaElement) input; |
| if (!ActionUtil.isProcessable(getShell(), element)) |
| return; |
| |
| List result= new ArrayList(1); |
| IStatus status= compileCandidates(result, element); |
| if (status.isOK()) { |
| run((IJavaElement[]) result.toArray(new IJavaElement[result.size()])); |
| } else { |
| openErrorDialog(status); |
| } |
| } |
| |
| private int openErrorDialog(IStatus status) { |
| String message= CallHierarchyMessages.OpenCallHierarchyAction_messages_title; |
| String dialogTitle= getErrorDialogTitle(); |
| return ErrorDialog.openError(getShell(), dialogTitle, message, status); |
| } |
| |
| private static String getErrorDialogTitle() { |
| return CallHierarchyMessages.OpenCallHierarchyAction_dialog_title; |
| } |
| |
| public void run(IJavaElement[] elements) { |
| if (elements.length == 0) { |
| getShell().getDisplay().beep(); |
| return; |
| } |
| CallHierarchyUI.open(elements, getSite().getWorkbenchWindow()); |
| } |
| |
| private static IStatus compileCandidates(List result, IJavaElement elem) { |
| IStatus ok= new Status(IStatus.OK, JavaPlugin.getPluginId(), 0, "", null); //$NON-NLS-1$ |
| switch (elem.getElementType()) { |
| case IJavaElement.METHOD: |
| result.add(elem); |
| return ok; |
| } |
| return createStatus(CallHierarchyMessages.OpenCallHierarchyAction_messages_no_valid_java_element); |
| } |
| |
| private static IStatus createStatus(String message) { |
| return new Status(IStatus.INFO, JavaPlugin.getPluginId(), IJavaStatusConstants.INTERNAL_ERROR, message, null); |
| } |
| } |
