--- /dev/null
+package org.argeo.cms.swt.auth;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+import javax.security.auth.callback.Callback;
+import javax.security.auth.callback.CallbackHandler;
+import javax.security.auth.callback.NameCallback;
+import javax.security.auth.callback.PasswordCallback;
+import javax.security.auth.callback.TextOutputCallback;
+import javax.security.auth.callback.UnsupportedCallbackException;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.events.KeyListener;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.widgets.Combo;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Text;
+
+/**
+ * A composite that can populate itself based on {@link Callback}s. It can be
+ * used directly as a {@link CallbackHandler} or be used by one by calling the
+ * {@link #createCallbackHandlers(Callback[])}. Supported standard
+ * {@link Callback}s are:<br>
+ * <ul>
+ * <li>{@link PasswordCallback}</li>
+ * <li>{@link NameCallback}</li>
+ * <li>{@link TextOutputCallback}</li>
+ * </ul>
+ * Supported Argeo {@link Callback}s are:<br>
+ * <ul>
+ * <li>{@link LocaleChoice}</li>
+ * </ul>
+ */
+public class CompositeCallbackHandler extends Composite implements CallbackHandler {
+ private static final long serialVersionUID = -928223893722723777L;
+
+ private boolean wasUsedAlready = false;
+ private boolean isSubmitted = false;
+ private boolean isCanceled = false;
+
+ public CompositeCallbackHandler(Composite parent, int style) {
+ super(parent, style);
+ }
+
+ @Override
+ public synchronized void handle(final Callback[] callbacks) throws IOException, UnsupportedCallbackException {
+ // reset
+ if (wasUsedAlready && !isSubmitted() && !isCanceled()) {
+ cancel();
+ for (Control control : getChildren())
+ control.dispose();
+ isSubmitted = false;
+ isCanceled = false;
+ }
+
+ for (Callback callback : callbacks)
+ checkCallbackSupported(callback);
+ // create controls synchronously in the UI thread
+ getDisplay().syncExec(new Runnable() {
+
+ @Override
+ public void run() {
+ createCallbackHandlers(callbacks);
+ }
+ });
+
+ if (!wasUsedAlready)
+ wasUsedAlready = true;
+
+ // while (!isSubmitted() && !isCanceled()) {
+ // try {
+ // wait(1000l);
+ // } catch (InterruptedException e) {
+ // // silent
+ // }
+ // }
+
+ // cleanCallbacksAfterCancel(callbacks);
+ }
+
+ public void checkCallbackSupported(Callback callback) throws UnsupportedCallbackException {
+ if (callback instanceof TextOutputCallback || callback instanceof NameCallback
+ || callback instanceof PasswordCallback || callback instanceof LocaleChoice) {
+ return;
+ } else {
+ throw new UnsupportedCallbackException(callback);
+ }
+ }
+
+ /**
+ * Set writable callbacks to null if the handle is canceled (check is done
+ * by the method)
+ */
+ public void cleanCallbacksAfterCancel(Callback[] callbacks) {
+ if (isCanceled()) {
+ for (Callback callback : callbacks) {
+ if (callback instanceof NameCallback) {
+ ((NameCallback) callback).setName(null);
+ } else if (callback instanceof PasswordCallback) {
+ PasswordCallback pCallback = (PasswordCallback) callback;
+ char[] arr = pCallback.getPassword();
+ if (arr != null) {
+ Arrays.fill(arr, '*');
+ pCallback.setPassword(null);
+ }
+ }
+ }
+ }
+ }
+
+ public void createCallbackHandlers(Callback[] callbacks) {
+ Composite composite = this;
+ for (int i = 0; i < callbacks.length; i++) {
+ Callback callback = callbacks[i];
+ if (callback instanceof TextOutputCallback) {
+ createLabelTextoutputHandler(composite, (TextOutputCallback) callback);
+ } else if (callback instanceof NameCallback) {
+ createNameHandler(composite, (NameCallback) callback);
+ } else if (callback instanceof PasswordCallback) {
+ createPasswordHandler(composite, (PasswordCallback) callback);
+ } else if (callback instanceof LocaleChoice) {
+ createLocaleHandler(composite, (LocaleChoice) callback);
+ }
+ }
+ }
+
+ protected Text createNameHandler(Composite composite, final NameCallback callback) {
+ Label label = new Label(composite, SWT.NONE);
+ label.setText(callback.getPrompt());
+ final Text text = new Text(composite, SWT.SINGLE | SWT.LEAD | SWT.BORDER);
+ if (callback.getDefaultName() != null) {
+ // set default value, if provided
+ text.setText(callback.getDefaultName());
+ callback.setName(callback.getDefaultName());
+ }
+ text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+ text.addModifyListener(new ModifyListener() {
+ private static final long serialVersionUID = 7300032545287292973L;
+
+ public void modifyText(ModifyEvent event) {
+ callback.setName(text.getText());
+ }
+ });
+ text.addSelectionListener(new SelectionListener() {
+ private static final long serialVersionUID = 1820530045857665111L;
+
+ @Override
+ public void widgetSelected(SelectionEvent e) {
+ }
+
+ @Override
+ public void widgetDefaultSelected(SelectionEvent e) {
+ submit();
+ }
+ });
+
+ text.addKeyListener(new KeyListener() {
+ private static final long serialVersionUID = -8698107785092095713L;
+
+ @Override
+ public void keyReleased(KeyEvent e) {
+ }
+
+ @Override
+ public void keyPressed(KeyEvent e) {
+ }
+ });
+ return text;
+ }
+
+ protected Text createPasswordHandler(Composite composite, final PasswordCallback callback) {
+ Label label = new Label(composite, SWT.NONE);
+ label.setText(callback.getPrompt());
+ final Text passwordText = new Text(composite, SWT.SINGLE | SWT.LEAD | SWT.PASSWORD | SWT.BORDER);
+ passwordText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+ passwordText.addModifyListener(new ModifyListener() {
+ private static final long serialVersionUID = -7099363995047686732L;
+
+ public void modifyText(ModifyEvent event) {
+ callback.setPassword(passwordText.getTextChars());
+ }
+ });
+ passwordText.addSelectionListener(new SelectionListener() {
+ private static final long serialVersionUID = 1820530045857665111L;
+
+ @Override
+ public void widgetSelected(SelectionEvent e) {
+ }
+
+ @Override
+ public void widgetDefaultSelected(SelectionEvent e) {
+ submit();
+ }
+ });
+ return passwordText;
+ }
+
+ protected Combo createLocaleHandler(Composite composite, final LocaleChoice callback) {
+ String[] labels = callback.getSupportedLocalesLabels();
+ if (labels.length == 0)
+ return null;
+ Label label = new Label(composite, SWT.NONE);
+ label.setText("Language");
+
+ final Combo combo = new Combo(composite, SWT.READ_ONLY);
+ combo.setItems(labels);
+ combo.select(callback.getDefaultIndex());
+ combo.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
+ combo.addSelectionListener(new SelectionListener() {
+ private static final long serialVersionUID = 38678989091946277L;
+
+ @Override
+ public void widgetSelected(SelectionEvent e) {
+ callback.setSelectedIndex(combo.getSelectionIndex());
+ }
+
+ @Override
+ public void widgetDefaultSelected(SelectionEvent e) {
+ }
+ });
+ return combo;
+ }
+
+ protected Label createLabelTextoutputHandler(Composite composite, final TextOutputCallback callback) {
+ Label label = new Label(composite, SWT.NONE);
+ label.setText(callback.getMessage());
+ GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
+ data.horizontalSpan = 2;
+ label.setLayoutData(data);
+ return label;
+ // TODO: find a way to pass this information
+ // int messageType = callback.getMessageType();
+ // int dialogMessageType = IMessageProvider.NONE;
+ // switch (messageType) {
+ // case TextOutputCallback.INFORMATION:
+ // dialogMessageType = IMessageProvider.INFORMATION;
+ // break;
+ // case TextOutputCallback.WARNING:
+ // dialogMessageType = IMessageProvider.WARNING;
+ // break;
+ // case TextOutputCallback.ERROR:
+ // dialogMessageType = IMessageProvider.ERROR;
+ // break;
+ // }
+ // setMessage(callback.getMessage(), dialogMessageType);
+ }
+
+ synchronized boolean isSubmitted() {
+ return isSubmitted;
+ }
+
+ synchronized boolean isCanceled() {
+ return isCanceled;
+ }
+
+ protected synchronized void submit() {
+ isSubmitted = true;
+ notifyAll();
+ }
+
+ protected synchronized void cancel() {
+ isCanceled = true;
+ notifyAll();
+ }
+}
projects / lgpl / argeo-commons.git / blobdiff