Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain other free and open source software ("FOSS") code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.editors.wizards; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.core.runtime.Path; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.ContainerSelectionDialog; import com.aptana.ide.core.CoreStrings; import com.aptana.ide.core.StringUtils; /** * The "New" wizard page allows setting the container for the new file as well as the file name. The page will only * accept file name without the extension OR with the extension that matches a required one. */ public class SimpleNewWizardPage extends WizardPage { private Text containerText; private Text fileText; private ISelection selection; private String defaultFileName; /** * Constructor for SimpleNewWizardPage. * * @param selection */ public SimpleNewWizardPage(ISelection selection) { super(Messages.SimpleNewWizardPage_WizardPage); this.selection = selection; } /** * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); GridLayout layout = new GridLayout(); container.setLayout(layout); layout.numColumns = 3; layout.verticalSpacing = 9; Label label = new Label(container, SWT.NULL); label.setText(StringUtils.makeFormLabel(Messages.SimpleNewWizardPage_Container)); containerText = new Text(container, SWT.BORDER | SWT.SINGLE); GridData gd = new GridData(GridData.FILL_HORIZONTAL); containerText.setLayoutData(gd); containerText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); Button button = new Button(container, SWT.PUSH); button.setText(StringUtils.ellipsify(CoreStrings.BROWSE)); button.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { handleBrowse(); } }); label = new Label(container, SWT.NULL); label.setText(StringUtils.makeFormLabel(Messages.SimpleNewWizardPage_FileName)); fileText = new Text(container, SWT.BORDER | SWT.SINGLE); gd = new GridData(GridData.FILL_HORIZONTAL); fileText.setLayoutData(gd); fileText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); initialize(); dialogChanged(); setControl(container); } /** * Tests if the current workbench selection is a suitable container to use. */ private void initialize() { if (selection != null && selection.isEmpty() == false && selection instanceof IStructuredSelection) { IStructuredSelection ssel = (IStructuredSelection) selection; if (ssel.size() > 1) { return; } Object obj = ssel.getFirstElement(); if (!(obj instanceof IResource) && (obj instanceof IAdaptable)) { IAdaptable adaptable = (IAdaptable) obj; Object resource = adaptable.getAdapter(IResource.class); if (resource != null) { obj = resource; } } if (obj instanceof IResource) { IContainer container; if (obj instanceof IContainer) { container = (IContainer) obj; } else { container = ((IResource) obj).getParent(); } containerText.setText(container.getFullPath().toString()); } } if (defaultFileName != null) { fileText.setText(defaultFileName); } } /** * Uses the standard container selection dialog to choose the new value for the container field. */ private void handleBrowse() { ContainerSelectionDialog dialog = new ContainerSelectionDialog(getShell(), ResourcesPlugin.getWorkspace().getRoot(), false, Messages.SimpleNewWizardPage_SelectNewFileContainer); if (dialog.open() == ContainerSelectionDialog.OK) { Object[] result = dialog.getResult(); if (result.length == 1) { containerText.setText(((Path) result[0]).toString()); } } } /** * Ensures that both text fields are set. */ private void dialogChanged() { IResource container = ResourcesPlugin.getWorkspace().getRoot().findMember(new Path(getContainerName())); String fileName = getFileName(); if (getContainerName().length() == 0) { updateStatus(Messages.SimpleNewWizardPage_SpecifyFileContainer); return; } if (container == null || (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0) { updateStatus(Messages.SimpleNewWizardPage_FileContainerMustExist); return; } if (!container.isAccessible()) { updateStatus(Messages.SimpleNewWizardPage_ProjectMustBeWritable); return; } if (fileName.length() == 0) { updateStatus(Messages.SimpleNewWizardPage_SpecifyFileName); return; } if (fileName.replace('\\', '/').indexOf('/', 1) > 0) { updateStatus(Messages.SimpleNewWizardPage_ValidFileName); return; } int dotLoc = fileName.lastIndexOf('.'); if (dotLoc != -1) { String ext = fileName.substring(dotLoc + 1); if (requiredFileExtensions.length > 0) { boolean supportedFileExtension = false; for (int i = 0; !supportedFileExtension && i < requiredFileExtensions.length; i++) { supportedFileExtension = ext.equalsIgnoreCase(requiredFileExtensions[i]); } if (!supportedFileExtension) { updateStatus(StringUtils.format(Messages.SimpleNewWizardPage_FileExtensionMustBe, StringUtils.join(",", requiredFileExtensions))); //$NON-NLS-1$ return; } } } updateStatus(null); } private void updateStatus(String message) { setErrorMessage(message); setPageComplete(message == null); } /** * getContainerName * * @return String */ public String getContainerName() { return containerText.getText(); } /** * getFileName * * @return String */ public String getFileName() { return fileText.getText(); } /** * setDefaultFileName * * @param fileName */ public void setDefaultFileName(String fileName) { defaultFileName = fileName; } /** * setRequiredFileExtensions * * @param requiredFileExtensions */ public void setRequiredFileExtensions(String[] requiredFileExtensions) { this.requiredFileExtensions = requiredFileExtensions; } private String[] requiredFileExtensions; }