org.eclipse.jdt.ui.wizards 套件可提供有關建立 Java 元素的精靈頁面。除了使用組合頁面外,用戶端也可以繼承精靈頁面, 以新增自己的輸入欄位,或影響程式碼的產生。以下是新類型精靈頁面的範例, 其是自訂成建立 JUnit Test Case 類別。 此頁面以 "junit.framework.TestCase" 來起始設定超類別欄位, 並新增一個用以控制是否要為 setUp() 與 tearDown() 方法建立方法 Stub 的勾選框。
public class TestCaseWizardPage extends NewTypeWizardPage {
private Button fCreateStubs;
public TestCaseWizardPage() {
super(true, "TestCaseWizardPage");
}
/**
* 在使用對應的選擇項起始設定期間,
* 管理此精靈頁面的精靈必須呼叫此方法。
*/
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);
}
}
}