package sd.wizards;
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import org.eclipse.core.resources.IContainer;
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import org.eclipse.core.resources.IResource;
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import org.eclipse.core.resources.ResourcesPlugin;
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import org.eclipse.core.runtime.Path;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.jface.wizard.WizardPage;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.ModifyEvent;
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import org.eclipse.swt.events.ModifyListener;
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import org.eclipse.swt.events.SelectionAdapter;
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import org.eclipse.swt.events.SelectionEvent;
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import org.eclipse.swt.layout.GridData;
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import org.eclipse.swt.layout.GridLayout;
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import org.eclipse.swt.widgets.Button;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Label;
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import org.eclipse.swt.widgets.Text;
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import org.eclipse.ui.dialogs.ContainerSelectionDialog;
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/**
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* The "New" wizard page allows setting the container for the new file as well
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* as the file name. The page will only accept file name without the extension
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* OR with the extension that matches the expected one (mpe).
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*/
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public class SampleNewWizardPage extends WizardPage {
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private Text containerText;
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private Text fileText;
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private ISelection selection;
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/**
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* Constructor for SampleNewWizardPage.
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*
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* @param pageName
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*/
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public SampleNewWizardPage(ISelection selection) {
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super("wizardPage");
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setTitle("Multi-page Editor File");
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setDescription("This wizard creates a new file with *.mpe extension that can be opened by a multi-page editor.");
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this.selection = selection;
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}
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/**
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* @see IDialogPage#createControl(Composite)
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*/
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public void createControl(Composite parent) {
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Composite container = new Composite(parent, SWT.NULL);
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GridLayout layout = new GridLayout();
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container.setLayout(layout);
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layout.numColumns = 3;
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layout.verticalSpacing = 9;
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Label label = new Label(container, SWT.NULL);
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label.setText("&Container:");
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containerText = new Text(container, SWT.BORDER | SWT.SINGLE);
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GridData gd = new GridData(GridData.FILL_HORIZONTAL);
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containerText.setLayoutData(gd);
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containerText.addModifyListener(new ModifyListener() {
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public void modifyText(ModifyEvent e) {
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dialogChanged();
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}
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});
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Button button = new Button(container, SWT.PUSH);
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button.setText("Browse...");
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button.addSelectionListener(new SelectionAdapter() {
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public void widgetSelected(SelectionEvent e) {
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handleBrowse();
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}
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});
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label = new Label(container, SWT.NULL);
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label.setText("&File name:");
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fileText = new Text(container, SWT.BORDER | SWT.SINGLE);
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gd = new GridData(GridData.FILL_HORIZONTAL);
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fileText.setLayoutData(gd);
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fileText.addModifyListener(new ModifyListener() {
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public void modifyText(ModifyEvent e) {
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dialogChanged();
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}
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});
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initialize();
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dialogChanged();
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setControl(container);
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}
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/**
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* Tests if the current workbench selection is a suitable container to use.
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*/
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private void initialize() {
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if (selection != null && selection.isEmpty() == false
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&& selection instanceof IStructuredSelection) {
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IStructuredSelection ssel = (IStructuredSelection) selection;
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if (ssel.size() > 1)
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return;
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Object obj = ssel.getFirstElement();
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if (obj instanceof IResource) {
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IContainer container;
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if (obj instanceof IContainer)
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container = (IContainer) obj;
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else
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container = ((IResource) obj).getParent();
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containerText.setText(container.getFullPath().toString());
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}
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}
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fileText.setText("new_file.mpe");
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}
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/**
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* Uses the standard container selection dialog to choose the new value for
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* the container field.
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*/
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private void handleBrowse() {
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ContainerSelectionDialog dialog = new ContainerSelectionDialog(
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getShell(), ResourcesPlugin.getWorkspace().getRoot(), false,
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"Select new file container");
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if (dialog.open() == ContainerSelectionDialog.OK) {
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Object[] result = dialog.getResult();
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if (result.length == 1) {
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containerText.setText(((Path) result[0]).toString());
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}
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}
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}
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/**
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* Ensures that both text fields are set.
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*/
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private void dialogChanged() {
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IResource container = ResourcesPlugin.getWorkspace().getRoot()
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.findMember(new Path(getContainerName()));
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String fileName = getFileName();
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if (getContainerName().length() == 0) {
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updateStatus("File container must be specified");
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return;
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}
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if (container == null
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|| (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0) {
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updateStatus("File container must exist");
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return;
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}
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if (!container.isAccessible()) {
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updateStatus("Project must be writable");
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return;
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}
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if (fileName.length() == 0) {
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updateStatus("File name must be specified");
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return;
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}
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if (fileName.replace('\\', '/').indexOf('/', 1) > 0) {
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updateStatus("File name must be valid");
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return;
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}
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int dotLoc = fileName.lastIndexOf('.');
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if (dotLoc != -1) {
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String ext = fileName.substring(dotLoc + 1);
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if (ext.equalsIgnoreCase("mpe") == false) {
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updateStatus("File extension must be \"mpe\"");
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return;
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}
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}
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updateStatus(null);
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}
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private void updateStatus(String message) {
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setErrorMessage(message);
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setPageComplete(message == null);
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}
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public String getContainerName() {
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return containerText.getText();
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}
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public String getFileName() {
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return fileText.getText();
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}
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}
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