システムにログオンするためのインタラクティブなスプラッシュを備えた RCP アプリケーションを作成しました。Mac でビルドしたところ、アプリケーションは完璧に動作しましたが、Windows 用の新しい製品構成を作成してアプリケーションを実行すると、スプラッシュなしで起動し、コンソールにエラーは表示されません。
スプラッシュ ハンドラのコードは次のとおりです。
/**
* The splash screen controller for the RCP application. This has been modified to also act as a login screen for the
* application. Failure to correctly authenticate results in the application termination.
*/
package com.myproject.plugins.core.splashHandlers;
import java.net.MalformedURLException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.splash.AbstractSplashHandler;
/**
* The splash handler overrides the default RCP splash handler.
* @since 3.3
*/
public class InteractiveSplashHandler extends AbstractSplashHandler {
/**
* Composite container for login form.
*/
private Composite loginComposite;
/**
* Text box input for login username.
*/
private Text usernameTextBox;
/**
* Text box input for login password.
*/
private Text passwordTextBox;
/**
* OK button for submission of the login form.
*/
private Button okButton;
/**
* Cancel button for cancelling the login attempt and exiting the application.
*/
private Button cancelButton;
/**
* Simple boolean flag to store login success/status.
*/
private boolean isAuthenticated;
/**
* SWT form label for username.
*/
private Label usernameLabel;
/**
* SWT form label for password.
*/
private Label passwordLabel;
/**
* Form/layout data for username label.
*/
private FormData usernameLabelFormData;
/**
* Form/layout data for password label.
*/
private FormData passwordLabelFormData;
/**
* Form/layout data for username text box.
*/
private FormData usernameTextBoxFormData;
/**
* Form/layout data for password text box.
*/
private FormData passwordTextBoxFormData;
/**
* Form/layout data for OK button.
*/
private FormData okButtonFormData;
/**
* Constructor for the splash handler.
*/
public InteractiveSplashHandler() {
passwordTextBox = null;
cancelButton = null;
isAuthenticated = false;
}
/**
* Initialiser for the splash screen.
* @see org.eclipse.ui.splash.AbstractSplashHandler#init(org.eclipse.swt.widgets.Shell)
*/
public void init(final Shell splash) {
/**
* Initialising the parent SplashHandler with the splash shell.
*/
super.init(splash);
/**
* Configure the shell UI layout.
*/
configureUISplash();
/**
* Create UI components.
*/
createUI();
/**
* Create UI listeners.
*/
createUIListeners();
/**
* Force the splash screen to layout.
*/
splash.layout(true);
/**
* Keep the splash screen visible and prevent the RCP application from loading until the close button is
* clicked.
*/
doEventLoop();
}
/**
* Create the event loop for the splash to prevent the application load from completion, and hold it at the splash
* until the login event is successful.
*/
private void doEventLoop() {
Shell splash = getSplash();
while (isAuthenticated == false) {
if (splash.getDisplay().readAndDispatch() == false) {
splash.getDisplay().sleep();
}
}
}
/**
* Create the UI listeners for all the form components.
*/
private void createUIListeners() {
/**
* Create the OK button listeners.
*/
createUIListenersButtonOK();
/**
* Create the cancel button listeners.
*/
createUIListenersButtonCancel();
}
/**
* Listeners setup for the cancel button.
*/
private void createUIListenersButtonCancel() {
cancelButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleButtonCancelWidgetSelected();
}
});
}
/**
* Handles the cancel action by shutting down the RCP application.
*/
private void handleButtonCancelWidgetSelected() {
/**
* Abort the loading of the RCP application.
*/
getSplash().getDisplay().close();
System.exit(0);
}
/**
* Listeners setup for the OK button.
*/
private void createUIListenersButtonOK() {
okButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleButtonOKWidgetSelected();
}
});
}
/**
* Handles the OK button being pressed and the login attempted.
*/
private void handleButtonOKWidgetSelected() {
String username = usernameTextBox.getText();
String password = passwordTextBox.getText();
AuthenticationClient client = new AuthenticationClient();
if (username.equals("") || password.equals("")) {
MessageDialog.openError(getSplash(),
"Authentication Failed", //$NON-NLS-1$
"A username and password must be specified to login."); //$NON-NLS-1$
} else {
try {
if (client.authenticate(username, password)) {
isAuthenticated = true;
} else {
MessageDialog.openError(getSplash(),
"Authentication Failed", //$NON-NLS-1$
"The details you entered could not be verified."); //$NON-NLS-1$
}
} catch (MalformedURLException e) {
MessageDialog.openError(getSplash(),
"Authentication Failed", //$NON-NLS-1$
"Service responded with an error."); //$NON-NLS-1$
}
}
}
/**
* Calls the individual UI component creation functions.
*/
private void createUI() {
/**
* Create the login panel.
*/
createUICompositeLogin();
/**
* Create the user name label.
*/
createUILabelUserName();
/**
* Create the user name text widget.
*/
createUITextUserName();
/**
* Create the password label.
*/
createUILabelPassword();
/**
* Create the password text widget.
*/
createUITextPassword();
/**
* Create the OK button.
*/
createUIButtonOK();
/**
* Create the cancel button.
*/
createUIButtonCancel();
}
/**
* Creates the SWT component for the cancel button.
*/
private void createUIButtonCancel() {
/**
* Create the button.
*/
cancelButton = new Button(loginComposite, SWT.PUSH);
okButtonFormData.right = new FormAttachment(cancelButton, -6);
FormData cancelButtonFormData = new FormData();
cancelButtonFormData.left = new FormAttachment(0, 392);
cancelButtonFormData.right = new FormAttachment(100, -10);
cancelButtonFormData.bottom = new FormAttachment(100, -10);
cancelButton.setLayoutData(cancelButtonFormData);
cancelButton.setText("Cancel");
}
/**
* Creates the SWT component for the OK button.
*/
private void createUIButtonOK() {
/**
* Create the button.
*/
okButton = new Button(loginComposite, SWT.PUSH);
passwordTextBoxFormData.bottom = new FormAttachment(okButton, -6);
okButtonFormData = new FormData();
okButtonFormData.left = new FormAttachment(0, 279);
okButtonFormData.bottom = new FormAttachment(100, -10);
okButton.setLayoutData(okButtonFormData);
okButton.setText("OK");
}
/**
* Creates the SWT component for the password text box.
*/
private void createUITextPassword() {
/**
* Create the text widget.
*/
int style = SWT.PASSWORD | SWT.BORDER;
passwordTextBox = new Text(loginComposite, style);
passwordLabelFormData.right = new FormAttachment(passwordTextBox, -6);
passwordTextBoxFormData = new FormData();
passwordTextBoxFormData.right = new FormAttachment(100, -10);
passwordTextBoxFormData.left = new FormAttachment(0, 279);
passwordTextBox.setLayoutData(passwordTextBoxFormData);
}
/**
* Creates the SWT component for the password label.
*/
private void createUILabelPassword() {
/**
* Create the label.
*/
passwordLabel = new Label(loginComposite, SWT.NONE);
passwordLabelFormData = new FormData();
passwordLabelFormData.top = new FormAttachment(usernameLabel, 11);
passwordLabel.setLayoutData(passwordLabelFormData);
passwordLabel.setText("&Password:");
}
/**
* Creates SWT component for the username text box.
*/
private void createUITextUserName() {
/**
* Create the text widget.
*/
usernameTextBox = new Text(loginComposite, SWT.BORDER);
usernameLabelFormData.top = new FormAttachment(usernameTextBox, 3, SWT.TOP);
usernameLabelFormData.right = new FormAttachment(usernameTextBox, -6);
usernameTextBoxFormData = new FormData();
usernameTextBoxFormData.top = new FormAttachment(0, 233);
usernameTextBoxFormData.right = new FormAttachment(100, -10);
usernameTextBoxFormData.left = new FormAttachment(0, 279);
usernameTextBox.setLayoutData(usernameTextBoxFormData);
}
/**
* Creates SWT component for the username label.
*/
private void createUILabelUserName() {
/**
* Create the label
*/
usernameLabel = new Label(loginComposite, SWT.NONE);
usernameLabelFormData = new FormData();
usernameLabel.setLayoutData(usernameLabelFormData);
usernameLabel.setText("&User Name:");
}
/**
* Creates SWT component for the login composite.
*/
private void createUICompositeLogin() {
/**
* Create the composite and set the layout.
*/
loginComposite = new Composite(getSplash(), SWT.BORDER);
loginComposite.setLayout(new FormLayout());
}
/**
* Configures the splash screen SWT/UI components.
*/
private void configureUISplash() {
/**
* Configure layout
*/
FillLayout layout = new FillLayout();
getSplash().setLayout(layout);
/**
* Force shell to inherit the splash background
*/
getSplash().setBackgroundMode(SWT.INHERIT_DEFAULT);
}
}