| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.internal.ui.jarpackager; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.swt.widgets.Shell; |
| |
| import org.eclipse.core.resources.IFile; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| |
| import org.eclipse.ui.IObjectActionDelegate; |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| /** |
| * This abstract action delegate offers base functionality used by |
| * other JAR Package based action delegates. |
| */ |
| abstract class JarPackageActionDelegate implements IObjectActionDelegate { |
| |
| private IStructuredSelection fSelection; |
| private Shell fShell; |
| |
| /** |
| * Returns the active shell. |
| * @return the active shell. |
| */ |
| protected Shell getShell() { |
| if (fShell != null) |
| return fShell; |
| return JavaPlugin.getActiveWorkbenchShell(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart) |
| */ |
| public void setActivePart(IAction action, IWorkbenchPart targetPart) { |
| IWorkbenchPartSite site= targetPart.getSite(); |
| fShell= site != null ? site.getShell() : null; |
| } |
| |
| /* |
| * @see IActionDelegate |
| */ |
| public void selectionChanged(IAction action, ISelection selection) { |
| if (selection instanceof IStructuredSelection) |
| fSelection= (IStructuredSelection)selection; |
| else |
| fSelection= StructuredSelection.EMPTY; |
| } |
| |
| /** |
| * Returns the description file for the first description file in |
| * the selection. Use this method if this action is only active if |
| * one single file is selected. |
| * @param selection the current selection |
| * @return description file |
| */ |
| protected IFile getDescriptionFile(IStructuredSelection selection) { |
| return (IFile)selection.getFirstElement(); |
| } |
| |
| /** |
| * Returns a description file for each description file in |
| * the selection. Use this method if this action allows multiple |
| * selection. |
| * @param selection the current selection |
| * @return description files |
| */ |
| protected IFile[] getDescriptionFiles(IStructuredSelection selection) { |
| IFile[] files= new IFile[selection.size()]; |
| Iterator<?> iter= selection.iterator(); |
| int i= 0; |
| while (iter.hasNext()) |
| files[i++]= (IFile)iter.next(); |
| return files; |
| } |
| |
| protected IWorkbench getWorkbench() { |
| return PlatformUI.getWorkbench(); |
| } |
| |
| protected IStructuredSelection getSelection() { |
| return fSelection; |
| } |
| } |