Java tutorial
/* * Copyright (C) 2003-2014 Pascal Essiembre * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.essiembre.eclipse.rbe.ui.wizards; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.InvocationTargetException; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.operation.IRunnableWithProgress; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.wizard.Wizard; import org.eclipse.ui.INewWizard; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.IWorkbenchWizard; import org.eclipse.ui.PartInitException; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.ide.IDE; import com.essiembre.eclipse.rbe.RBEPlugin; import com.essiembre.eclipse.rbe.model.bundle.PropertiesGenerator; import com.essiembre.eclipse.rbe.model.workbench.RBEPreferences; /** * This is a sample new wizard. Its role is to create a new file * resource in the provided container. If the container resource * (a folder or a project) is selected in the workspace * when the wizard is opened, it will accept it as the target * container. The wizard creates one or several files with the extension * "properties". If a sample multi-page editor (also available * as a template) is registered for the same extension, it will * be able to open it. */ public class ResourceBundleWizard extends Wizard implements INewWizard { private ResourceBundleNewWizardPage page; private ISelection selection; /** * Constructor for ResourceBundleWizard. */ public ResourceBundleWizard() { super(); setNeedsProgressMonitor(true); } /** * Adding the page to the wizard. */ public void addPages() { page = new ResourceBundleNewWizardPage(selection); addPage(page); } /** * This method is called when 'Finish' button is pressed in * the wizard. We will create an operation and run it * using wizard as execution context. */ public boolean performFinish() { final String containerName = page.getContainerName(); final String baseName = page.getFileName(); final String[] locales = page.getLocaleStrings(); IRunnableWithProgress op = new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException { try { monitor.worked(1); monitor.setTaskName(RBEPlugin.getString("editor.wiz.creating")); IFile file = null; for (int i = 0; i < locales.length; i++) { String fileName = baseName; if (locales[i].equals(ResourceBundleNewWizardPage.DEFAULT_LOCALE)) { fileName += ".properties"; } else { fileName += "_" + locales[i] + ".properties"; } file = createFile(containerName, fileName, monitor); } final IFile lastFile = file; getShell().getDisplay().asyncExec(new Runnable() { public void run() { IWorkbenchPage wbPage = PlatformUI.getWorkbench().getActiveWorkbenchWindow() .getActivePage(); try { IDE.openEditor(wbPage, lastFile, true); } catch (PartInitException e) { } } }); monitor.worked(1); } catch (CoreException e) { throw new InvocationTargetException(e); } finally { monitor.done(); } } }; try { getContainer().run(true, false, op); } catch (InterruptedException e) { return false; } catch (InvocationTargetException e) { Throwable realException = e.getTargetException(); MessageDialog.openError(getShell(), "Error", realException.getMessage()); return false; } return true; } /* * The worker method. It will find the container, create the * file if missing or just replace its contents, and open * the editor on the newly created file. */ /*default*/ IFile createFile(String containerName, String fileName, IProgressMonitor monitor) throws CoreException { monitor.beginTask(RBEPlugin.getString("editor.wiz.creating") + fileName, 2); IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot(); IResource resource = root.findMember(new Path(containerName)); if (!resource.exists() || !(resource instanceof IContainer)) { throwCoreException("Container \"" + containerName + "\" does not exist."); } IContainer container = (IContainer) resource; final IFile file = container.getFile(new Path(fileName)); try { InputStream stream = openContentStream(); if (file.exists()) { file.setContents(stream, true, true, monitor); } else { file.create(stream, true, monitor); } stream.close(); } catch (IOException e) { } return file; } /* * We will initialize file contents with a sample text. */ private InputStream openContentStream() { String contents = ""; if (RBEPreferences.getShowGenerator()) { contents = PropertiesGenerator.GENERATED_BY; } return new ByteArrayInputStream(contents.getBytes()); } private void throwCoreException(String message) throws CoreException { IStatus status = new Status(IStatus.ERROR, "com.essiembre.eclipse.i18n.resourcebundle", IStatus.OK, message, null); throw new CoreException(status); } /** * We will accept the selection in the workbench to see if * we can initialize from it. * @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection) */ public void init(IWorkbench workbench, IStructuredSelection structSelection) { this.selection = structSelection; } }