org.eclipse.jdt.ui.wizards 包提供用于创建 Java 元素的向导页面。除了使用预制的页面之外,客户机还能将向导页面子类化,以添加它们自己的输入字段或影响代码生成。以下是新类型向导页面的样本,定制这些页面以创建 JUnit 测试实例类。该页面初始化带有“junit.framework.TestCase”的超类字段,并添加一个复选框来控制是否要创建 setUp() 和 tearDown() 方法的方法存根。
public class TestCaseWizardPage extends NewTypeWizardPage {
private Button fCreateStubs;
public TestCaseWizardPage() {
super(true, "TestCaseWizardPage");
}
/**
* The wizard managing this wizard page must call this method
* during initialization with a corresponding selection.
*/
public void init(IStructuredSelection selection) {
IJavaElement jelem= getInitialJavaElement(selection);
initContainerPage(jelem);
initTypePage(jelem);
// define the components for which a status is desired
IStatus[] status= new IStatus[] {
fContainerStatus,
isEnclosingTypeSelected() ? fEnclosingTypeStatus : fPackageStatus,
fTypeNameStatus,
};
updateStatus(status);
}
public void createControl(Composite parent) {
initializeDialogUnits(parent);
Composite composite= new Composite(parent, SWT.NONE);
int nColumns= 4;
GridLayout layout= new GridLayout();
layout.numColumns= nColumns;
composite.setLayout(layout);
// Create the standard input fields
createContainerControls(composite, nColumns);
createPackageControls(composite, nColumns);
createSeparator(composite, nColumns);
createTypeNameControls(composite, nColumns);
createSuperClassControls(composite, nColumns);
// Create the checkbox controlling whether we want stubs
fCreateStubs= new Button(composite, SWT.CHECK);
fCreateStubs.setText("Add 'setUp()' and 'tearDown()' to new class");
GridData gd= new GridData();
gd.horizontalSpan= nColumns;
fCreateStubs.setLayoutData(gd);
setControl(composite);
// Initialize the super type field and mark it as read-only
setSuperClass("junit.framework.TestCase", false);
}
protected void createTypeMembers(IType newType, ImportsManager imports, IProgressMonitor monitor) throws CoreException {
if (fCreateStubs.getSelection()) {
String setUpMathod= "public void setUp() {}";
newType.createMethod(setUpMathod, null, false, null);
String tearDownMathod= "public void setUp() {}"
newType.createMethod(tearDownMathod, null, false, null);
}
}
}