package com.baselet.plugin.wizard;
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 com.baselet.control.enums.Program;
/**
* 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 (uxf/pxf).
*/
public class NewWizardPage extends WizardPage {
private Text containerText;
private Text fileText;
private final ISelection selection;
/**
* Constructor for SampleNewWizardPage.
*/
public NewWizardPage(ISelection selection) {
super(Program.getInstance().getProgramName() + " wizard");
setTitle(Program.getInstance().getProgramName() + " diagram");
setDescription("This wizard creates a " + Program.getInstance().getProgramName() + " diagram.");
this.selection = selection;
}
/**
* @see IDialogPage#createControl(Composite)
*/
@Override
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;
// Input for the container where the new diagram should be placed
Label label = new Label(container, SWT.NULL);
label.setText("&Container:");
containerText = new Text(container, SWT.BORDER | SWT.SINGLE);
GridData gd = new GridData(GridData.FILL_HORIZONTAL);
containerText.setLayoutData(gd);
containerText.addModifyListener(new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
dialogChanged();
}
});
// button to choose the container
Button button = new Button(container, SWT.PUSH);
button.setText("Browse...");
button.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
handleBrowse();
}
});
// name of the diagram
label = new Label(container, SWT.NULL);
label.setText("&Diagram name:");
fileText = new Text(container, SWT.BORDER | SWT.SINGLE);
gd = new GridData(GridData.FILL_HORIZONTAL);
fileText.setLayoutData(gd);
fileText.addModifyListener(new ModifyListener() {
@Override
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() && selection instanceof IStructuredSelection) {
IStructuredSelection ssel = (IStructuredSelection) selection;
if (ssel.size() > 1) {
return;
}
Object obj = ssel.getFirstElement();
// try to find a resource for the selected object
IResource resource = null;
if (obj instanceof IResource) {
resource = (IResource) obj;
}
else if (obj != null && obj.getClass().getName().equals("org.eclipse.jdt.core.IJavaElement")) {
// use reflection here to avoid dependency on JDT, such that the wizard can be used for
// C/C++ Eclipse installations as well
try {
resource = (IResource) obj.getClass().getMethod("getResource").invoke(obj);
} catch (Exception e) {
throw new RuntimeException("Error in reflection code", e);
}
}
if (resource != null) {
// convert the resource to a container and
// initalize the container text with it
IContainer container = null;
if (resource instanceof IContainer) {
container = (IContainer) resource;
}
else {
container = resource.getParent();
}
containerText.setText(container.getFullPath().toString());
}
}
fileText.setText("new_diagram." + Program.getInstance().getExtension());
}
/**
* 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,
"Select new file container");
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("File container must be specified");
return;
}
if (container == null || (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0) {
updateStatus("File container must exist");
return;
}
if (!container.isAccessible()) {
updateStatus("Project must be writable");
return;
}
if (fileName.length() == 0) {
updateStatus("File name must be specified");
return;
}
if (fileName.replace('\\', '/').indexOf('/', 1) > 0) {
updateStatus("File name must be valid");
return;
}
int dotLoc = fileName.lastIndexOf('.');
if (dotLoc != -1) {
String ext = fileName.substring(dotLoc + 1);
if (!ext.equalsIgnoreCase(Program.getInstance().getExtension())) {
updateStatus("File extension must be \"" + Program.getInstance().getExtension() + "\"");
return;
}
}
updateStatus(null);
}
private void updateStatus(String message) {
setErrorMessage(message);
setPageComplete(message == null);
}
public String getContainerName() {
return containerText.getText();
}
public String getFileName() {
return fileText.getText();
}
}