Java tutorial
/* * WESS eZ Publish Eclipse plug-in * Copyright (C) 2009 Web Engineering Sahli & Stalder (http://www.wess.ch) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package ch.wess.ezclipse.tpl.wizards.internal; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.Path; import org.eclipse.jface.dialogs.IDialogPage; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.window.Window; 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 ch.wess.ezclipse.tpl.nl1.Messages; /** * 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 the expected one (tpl). * * @author Alain Sahli (a.sahli[at]wess.ch) */ public class NewTemplateWizardPage extends WizardPage { /** * The container text field. */ private Text containerText; /** * The file text field. */ private Text fileText; /** * The node ID text field. */ private Text nodeId; /** * The currenct selected container. */ private ISelection selection; /** * Constructor for SampleNewWizardPage. * * @param pageName */ public NewTemplateWizardPage(ISelection selection) { super(Messages.getString("NewTemplateWizardPage.0")); //$NON-NLS-1$ setTitle(Messages.getString("NewTemplateWizardPage.1")); //$NON-NLS-1$ setDescription(Messages.getString("NewTemplateWizardPage.2") + //$NON-NLS-1$ Messages.getString("NewTemplateWizardPage.3") + //$NON-NLS-1$ Messages.getString("NewTemplateWizardPage.4")); //$NON-NLS-1$ this.selection = selection; } /** * @see IDialogPage#createControl(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(Messages.getString("NewTemplateWizardPage.5")); //$NON-NLS-1$ 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(Messages.getString("NewTemplateWizardPage.6")); //$NON-NLS-1$ button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { handleBrowse(); } }); label = new Label(container, SWT.NULL); label.setText(Messages.getString("NewTemplateWizardPage.7")); //$NON-NLS-1$ fileText = new Text(container, SWT.BORDER | SWT.SINGLE); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; fileText.setLayoutData(gd); fileText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); label = new Label(container, SWT.NULL); label.setText(Messages.getString("NewTemplateWizardPage.8")); //$NON-NLS-1$ nodeId = new Text(container, SWT.BORDER | SWT.SINGLE); gd = new GridData(GridData.FILL_HORIZONTAL); nodeId.setLayoutData(gd); nodeId.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { nodeIdChanged(); } }); 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) { IContainer container; if (obj instanceof IContainer) container = (IContainer) obj; else container = ((IResource) obj).getParent(); containerText.setText(container.getFullPath().toString()); } } fileText.setText("new_file.tpl"); //$NON-NLS-1$ } /** * 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.getString("NewTemplateWizardPage.9")); //$NON-NLS-1$ if (dialog.open() == Window.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.getString("NewTemplateWizardPage.10")); //$NON-NLS-1$ return; } if (container == null || (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0) { updateStatus(Messages.getString("NewTemplateWizardPage.11")); //$NON-NLS-1$ return; } if (!container.isAccessible()) { updateStatus(Messages.getString("NewTemplateWizardPage.12")); //$NON-NLS-1$ return; } if (fileName.length() == 0) { updateStatus(Messages.getString("NewTemplateWizardPage.13")); //$NON-NLS-1$ return; } if (fileName.replace('\\', '/').indexOf('/', 1) > 0) { updateStatus(Messages.getString("NewTemplateWizardPage.14")); //$NON-NLS-1$ return; } int dotLoc = fileName.lastIndexOf('.'); if (dotLoc != -1) { String ext = fileName.substring(dotLoc + 1); if (ext.equalsIgnoreCase(Messages.getString("NewTemplateWizardPage.15")) == false) { //$NON-NLS-1$ updateStatus(Messages.getString("NewTemplateWizardPage.16")); //$NON-NLS-1$ return; } } updateStatus(null); } /** * Test if the new node ID is a valid string. */ private void nodeIdChanged() { String node = getNodeId(); try { Integer.parseInt(node); updateStatus(null); } catch (NumberFormatException ex) { updateStatus(Messages.getString("NewTemplateWizardPage.17")); //$NON-NLS-1$ } } /** * Update the error message. * * @param message */ private void updateStatus(String message) { setErrorMessage(message); setPageComplete(message == null); } /** * Get the content of the container text field. * * @return the name of the container */ public String getContainerName() { return containerText.getText(); } /** * The content of the node ID text field. * * @return the node id */ public String getNodeId() { return nodeId.getText(); } /** * The content of the file text field. * * @return the file name */ public String getFileName() { return fileText.getText(); } }