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package org.glassfish.appclient.client.acc.callbackhandler;
import com.sun.enterprise.security.GUILoginDialog;
import com.sun.enterprise.universal.i18n.LocalStringsImpl;
import java.io.IOException;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.UnsupportedCallbackException;
import org.glassfish.appclient.client.acc.callbackhandler.CallbackGUIBindings.MessageType;
/**
* Example callback handler for displaying and gathering information from the
* user on behalf of the security system.
* <p>
* This callback handler works with all known types of callback handlers (as of
* this writing). It basically builds a component for each callback that the
* caller provides and passes them all to a JOptionPane, which displays all the
* components and accepts the user's ending action (such as OK, Cancel, etc.).
* <p>
* Normally the caller passes a ConfirmationCallback to tell what kind of
* responses should be expected and accepted from the user (OK/Cancel, Yes/No,
* Yes/No/Cancel, etc.). If the caller does not provide one this handler
* uses a default ConfirmationCallback with "OK" as the only choice.
* In such a case the user has no option to cancel, although he or she can
* always simply close the option dialog box.
* <p>
* The dialog box includes a system-selected icon based on the message type
* specified when the JOptionPane is created. The message type for the dialog
* box (INFORMATION, WARNING, ERROR) is computed by choosing the most severe
* message type from ConfirmationCallbacks or TextOutputCallbacks passed by the
* caller.
* <p>
* Whenever the user dismisses the dialog box, whether by choosing one of the
* confirmation choices (such as OK or Cancel) or by closing the window, the
* handler updates each of the callbacks as appropriate with information from
* the corresponding U/I components. The caller should provide a
* ConfirmationCallback if it needs to distinguish among the possible responses
* from the user.
* <p>
* Each type of callback is associated with a corresponding type of
* callback-to-U/I binding. Each binding creates a JComponent,
* specific to its type of callback, that displays information from the callback
* or collects information from the user, perhaps using a prompt or initial
* value from the callback. Each type of binding also implements the finish
* method which updates the corresponding callback, if appropriate, with
* data from the U/I component.
*
* @author tjquinn
*/
public class DefaultGUICallbackHandler implements javax.security.auth.callback.CallbackHandler {
/* records which confirmation callback binding to use - either the last
* one passed by the caller or the default */
private CallbackGUIBindings.Confirmation confirmationCallbackGUIBinding = null;
/* most severe message type found among the callbacks with a message type,
* such as ConfirmationCallback and TextOutputCallback
*/
private MessageType messageType;
private LocalStringsImpl localStrings = new LocalStringsImpl(DefaultGUICallbackHandler.class);
/**
* Handles the caller-requested callbacks.
* @param callbacks the Callback objects to be processed
* @throws java.io.IOException
* @throws UnsupportedCallbackException if this handler does not support the
* specified callback
*/
public void handle(Callback[] callbacks)
throws IOException, UnsupportedCallbackException {
new GUILoginDialog(localStrings.get("dialog.user"), callbacks);
// messageType = MessageType.PLAIN;
//
// /*
// * Record all the callback-to-U/I bindings created, as well as all the
// * components in a separate data structure so an array of JComponents
// * can be passed to the JOptionPane.
// */
// ArrayList<CallbackGUIBindings.Binding> bindings = new ArrayList<CallbackGUIBindings.Binding>();
// ArrayList<JComponent> components = new ArrayList<JComponent>();
// try {
// prepareComponentBindings(callbacks, bindings, components);
// } catch (Exception e) {
// throw new RuntimeException(e);
// }
//
// /*
// * Decide what the message type should be for the dialog box, based on
// * the message types from the callbacks that have one.
// */
// for (CallbackGUIBindings.Binding binding : bindings) {
// MessageType bindingType = binding.getMessageType();
// if ( ! messageType.exceeds(bindingType)) {
// messageType = bindingType;
// }
// }
//
// /*
// * Create the JOptionPane using the assembled U/I components for
// * the callbacks requested. By this time the binding for either a
// * caller-specified ConfirmationCallback or the handler-supplied
// * default one has been assigned to confirmationCallbackUIBinding. Let
// * it map from the Callback-defined option types to the JOptionPane
// * option types. (The option types indicate whether to display
// * OK/Cancel, Yes/No, etc.) Also use the most severe message type
// * specified by any of the callbacks capable of doing so.
// */
// JOptionPane optionPane = new JOptionPane(
// components.toArray(new JComponent[components.size()]),
// confirmationCallbackGUIBinding.getOptionPaneOptionType(),
// messageType.getOptionPaneMessageType(),
// null,
// confirmationCallbackGUIBinding.getOptions(),
// confirmationCallbackGUIBinding.getDefaultOption()
// );
//
// JDialog dialog = optionPane.createDialog(
// null,
// StringManager.getString("dialog.title"));
// dialog.setResizable(true);
// /*
// * The setVisible invocation blocks until the user clicks on one of
// * the buttons or closes the window
// */
// dialog.setVisible(true);
//
// int response = computeResponseValue(optionPane);
// dialog.setVisible(false);
// dialog.dispose();
//
// /*
// * Give each binding a chance to update the callback with information
// * now available from its corresponding U/I component.
// */
// for (CallbackGUIBindings.Binding binding : bindings) {
// binding.finish();
// }
//
// /*
// * Convert the JOptionPane's result value to one appropriate to the
// * ConfirmationCallback's set of possible values.
// */
// confirmationCallbackGUIBinding.setResult(response);
// }
//
// private int computeResponseValue(JOptionPane pane) {
// Object selectedValue = pane.getValue();
// if(selectedValue == null)
// return JOptionPane.CLOSED_OPTION;
// if(pane.getOptions() == null) {
// if(selectedValue instanceof Integer)
// return ((Integer)selectedValue).intValue();
// return JOptionPane.CLOSED_OPTION;
// }
//
// for(int counter = 0, maxCounter = pane.getOptions().length;
// counter < maxCounter; counter++) {
// if(pane.getOptions()[counter].equals(selectedValue))
// return counter;
// }
// return JOptionPane.CLOSED_OPTION;
// }
//
// /**
// * Populates the collection of bindings and components for each callback.
// * @param callbacks the Callbacks provided by the caller
// * @param bindings - Collection of bindings of callbacks to U/I components
// * @param components - Collection of U/I components for display in the JOptionPane
// * @throws javax.security.auth.callback.UnsupportedCallbackException
// */
// private void prepareComponentBindings(
// Callback[] callbacks,
// Collection<CallbackGUIBindings.Binding> bindings,
// Collection<JComponent> components) throws UnsupportedCallbackException, InstantiationException, IllegalAccessException, NoSuchMethodException, IllegalArgumentException, InvocationTargetException {
//
// CallbackGUIBindings factory = new CallbackGUIBindings();
// for (Callback callback : callbacks) {
// CallbackGUIBindings.Binding binding = factory.createCallbackGUIBinding(callback);
// bindings.add(binding);
// if (binding instanceof CallbackGUIBindings.Confirmation) {
// /*
// * Do not add the confirmation callback's component to the
// * list of components to be part of the option dialog that
// * will be displayed. Instead the option dialog itself will
// * be set up to use the options specified by the (last)
// * ConfirmationCallback.
// */
// confirmationCallbackGUIBinding =
// (CallbackGUIBindings.Confirmation) binding;
// } else {
// components.add(binding.getComponent());
// }
//
// /*
// * Make sure there is at least one confirmation callback binding
// * so we know what choices to offer the user if the caller did not
// * specify them.
// */
// if (confirmationCallbackGUIBinding == null) {
// confirmationCallbackGUIBinding =
// factory.getDefaultConfirmationCallbackUIBinding();
// }
// }
}
}