Java tutorial
/******************************************************************************* * Copyright (c) 2015 ARM Ltd. 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: * ARM Ltd and ARM Germany GmbH - Initial API and implementation *******************************************************************************/ package com.arm.cmsis.pack.project.wizards; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; 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.osgi.util.NLS; import org.eclipse.ui.INewWizard; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPage; import org.eclipse.ui.PartInitException; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.ide.IDE; import com.arm.cmsis.pack.project.CpProjectPlugIn; import com.arm.cmsis.pack.project.Messages; import com.arm.cmsis.pack.ui.CpPlugInUI; /** * CMSIS Code Template Wizard */ public class CmsisCodeTemplateNewWizard extends Wizard implements INewWizard { private CmsisCodeTemplateNewWizardPage page; private ISelection selection; boolean overwrite; /** * Constructor for CmsisCodeTemplateNewWizard. */ public CmsisCodeTemplateNewWizard() { super(); setNeedsProgressMonitor(true); } /** * Adding the page to the wizard. */ @Override public void addPages() { page = new CmsisCodeTemplateNewWizardPage(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. */ @Override public boolean performFinish() { final String containerName = page.getContainerName(); final String[] fileNames = page.getFileName().split(" "); //$NON-NLS-1$ final String[] templateFileNames = page.getCodeTemplateFileNames(); IRunnableWithProgress op = new IRunnableWithProgress() { @Override public void run(IProgressMonitor monitor) throws InvocationTargetException { try { doFinish(containerName, fileNames, templateFileNames, monitor); } 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(), Messages.CmsisCodeTemplate_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. */ void doFinish(String containerName, String[] fileNames, String[] templateFileNames, IProgressMonitor monitor) throws CoreException { // create a sample file for (int i = 0; i < fileNames.length; i++) { String fileName = fileNames[i]; monitor.beginTask(Messages.CmsisCodeTemplate_CreatingFile + fileName, 2); IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot(); IResource resource = root.findMember(new Path(containerName)); if (!resource.exists() || !(resource instanceof IContainer)) { String message = NLS.bind(Messages.CmsisCodeTemplate_ContainerNotExist, containerName); throwCoreException(message); } IContainer container = (IContainer) resource; final IFile file = container.getFile(new Path(fileName)); try { InputStream stream = openContentStream(templateFileNames[i]); if (file.exists()) { getShell().getDisplay().syncExec(new Runnable() { @Override public void run() { String message = NLS.bind(Messages.CmsisCodeTemplate_FileAlreadyExist, file.getName()); overwrite = MessageDialog.openQuestion(getShell(), Messages.CmsisCodeTemplate_OverwriteExistingFile, message); } }); if (overwrite) { file.setContents(stream, true, true, monitor); } } else { file.create(stream, true, monitor); } stream.close(); } catch (IOException e) { e.printStackTrace(); } monitor.worked(1); monitor.setTaskName(Messages.CmsisCodeTemplate_OpeningFileForEditing); getShell().getDisplay().asyncExec(new Runnable() { @Override public void run() { IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(); try { IDE.openEditor(page, file, true); } catch (PartInitException e) { e.printStackTrace(); } } }); monitor.worked(1); } } /** * We will initialize file contents with the code template. * * @throws FileNotFoundException */ private InputStream openContentStream(String fileName) throws FileNotFoundException { return new FileInputStream(new File(fileName)); } private void throwCoreException(String message) throws CoreException { IStatus status = new Status(IStatus.ERROR, CpProjectPlugIn.PLUGIN_ID, 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) */ @Override public void init(IWorkbench workbench, IStructuredSelection selection) { this.selection = selection; setWindowTitle(Messages.CmsisCodeTemplate_WindowTitle); setDefaultPageImageDescriptor(CpPlugInUI.getImageDescriptor(CpPlugInUI.NEWFILE_WIZARD)); } }