Java tutorial
/******************************************************************************* * Copyright (c) 2014 Ericsson * * 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: * Patrick Tasse - Initial API and implementation *******************************************************************************/ package fr.inria.linuxtools.tmf.ui.project.wizards; import java.lang.reflect.InvocationTargetException; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspace; 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.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.actions.WorkspaceModifyOperation; import org.eclipse.ui.dialogs.SelectionStatusDialog; import fr.inria.linuxtools.internal.tmf.ui.Activator; import fr.inria.linuxtools.tmf.ui.project.model.TmfTraceFolder; /** * Implementation of new folder dialog that creates the folder element. * @since 3.0 */ public class NewFolderDialog extends SelectionStatusDialog { // ------------------------------------------------------------------------ // Members // ------------------------------------------------------------------------ private Text fFolderName; private final IFolder fParentFolder; // ------------------------------------------------------------------------ // Constructor // ------------------------------------------------------------------------ /** * Constructor * * @param shell * The parent shell * @param parent * The parent trace folder */ public NewFolderDialog(Shell shell, TmfTraceFolder parent) { super(shell); fParentFolder = parent.getResource(); setTitle(Messages.NewFolderDialog_DialogTitle); setStatusLineAboveButtons(true); } // ------------------------------------------------------------------------ // Dialog // ------------------------------------------------------------------------ @Override protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); composite.setLayout(new GridLayout()); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); createFolderNameGroup(composite); return composite; } private void createFolderNameGroup(Composite parent) { Font font = parent.getFont(); Composite folderGroup = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; folderGroup.setLayout(layout); folderGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); // New folder label Label folderLabel = new Label(folderGroup, SWT.NONE); folderLabel.setFont(font); folderLabel.setText(Messages.NewFolderDialog_FolderName); // New folder name entry field fFolderName = new Text(folderGroup, SWT.BORDER); GridData data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH; fFolderName.setLayoutData(data); fFolderName.setFont(font); fFolderName.addListener(SWT.Modify, new Listener() { @Override public void handleEvent(Event event) { validateNewFolderName(); } }); } private void validateNewFolderName() { String name = fFolderName.getText(); IWorkspace workspace = fParentFolder.getWorkspace(); IStatus nameStatus = workspace.validateName(name, IResource.FOLDER); if ("".equals(name)) { //$NON-NLS-1$ updateStatus(new Status(IStatus.ERROR, Activator.PLUGIN_ID, IStatus.ERROR, Messages.Dialog_EmptyNameError, null)); return; } if (!nameStatus.isOK()) { updateStatus(nameStatus); return; } if (fParentFolder.findMember(name) != null) { updateStatus(new Status(IStatus.ERROR, Activator.PLUGIN_ID, IStatus.ERROR, Messages.Dialog_ExistingNameError, null)); return; } updateStatus(new Status(IStatus.OK, Activator.PLUGIN_ID, "")); //$NON-NLS-1$ } // ------------------------------------------------------------------------ // SelectionStatusDialog // ------------------------------------------------------------------------ @Override protected void computeResult() { } @Override public void create() { super.create(); getButton(IDialogConstants.OK_ID).setEnabled(false); } @Override protected void okPressed() { IFolder folder = createNewFolder(fFolderName.getText()); if (folder == null) { return; } setSelectionResult(new IFolder[] { folder }); super.okPressed(); } private IFolder createNewFolder(String folderName) { final IFolder folder = fParentFolder.getFolder(new Path(folderName)); WorkspaceModifyOperation operation = new WorkspaceModifyOperation() { @Override public void execute(IProgressMonitor monitor) throws CoreException { try { monitor.beginTask("", 1000); //$NON-NLS-1$ folder.create(false, true, monitor); } finally { monitor.done(); } } }; try { PlatformUI.getWorkbench().getProgressService().busyCursorWhile(operation); } catch (InterruptedException | RuntimeException exception) { return null; } catch (InvocationTargetException exception) { MessageDialog.openError(getShell(), "", NLS.bind("", exception.getTargetException().getMessage())); //$NON-NLS-1$ //$NON-NLS-2$ return null; } return folder; } }