| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.ui.actions; |
| |
| import org.eclipse.ui.IWorkbenchSite; |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.core.search.IJavaSearchConstants; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPluginImages; |
| import org.eclipse.jdt.internal.ui.javaeditor.JavaEditor; |
| import org.eclipse.jdt.internal.ui.search.SearchMessages; |
| import org.eclipse.jdt.internal.ui.util.ExceptionHandler; |
| |
| /** |
| * Finds implementors of the selected element in the workspace. |
| * The action is applicable to selections representing a Java interface. |
| * |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * |
| * @since 2.0 |
| */ |
| public class FindImplementorsAction extends FindAction { |
| |
| /** |
| * Creates a new <code>FindImplementorsAction</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 FindImplementorsAction(IWorkbenchSite site) { |
| super(site); |
| } |
| |
| /** |
| * Note: This constructor is for internal use only. Clients should not call this constructor. |
| * @param editor the Java editor |
| */ |
| public FindImplementorsAction(JavaEditor editor) { |
| super(editor); |
| } |
| |
| void init() { |
| setText(SearchMessages.Search_FindImplementorsAction_label); |
| setToolTipText(SearchMessages.Search_FindImplementorsAction_tooltip); |
| setImageDescriptor(JavaPluginImages.DESC_OBJS_SEARCH_DECL); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.FIND_IMPLEMENTORS_IN_WORKSPACE_ACTION); |
| } |
| |
| Class[] getValidTypes() { |
| return new Class[] { ICompilationUnit.class, IType.class}; |
| } |
| |
| boolean canOperateOn(IJavaElement element) { |
| if (!super.canOperateOn(element)) |
| return false; |
| |
| if (element.getElementType() == IJavaElement.TYPE) |
| try { |
| return ((IType) element).isInterface(); |
| } catch (JavaModelException ex) { |
| ExceptionHandler.log(ex, SearchMessages.Search_Error_javaElementAccess_message); |
| return false; |
| } |
| // should not happen: handled by super.canOperateOn |
| return false; |
| } |
| |
| int getLimitTo() { |
| return IJavaSearchConstants.IMPLEMENTORS; |
| } |
| |
| String getOperationUnavailableMessage() { |
| return SearchMessages.JavaElementAction_operationUnavailable_interface; |
| } |
| } |
| |