cms/widgets/auth/CmsLogin.java

   1 package org.argeo.cms.widgets.auth;
   2
   3 import static org.argeo.cms.CmsMsg.password;
   4 import static org.argeo.cms.CmsMsg.username;
   5 import static org.argeo.cms.auth.AuthConstants.LOGIN_CONTEXT_ANONYMOUS;
   6 import static org.argeo.cms.auth.AuthConstants.LOGIN_CONTEXT_USER;
   7 import static org.argeo.cms.internal.kernel.Activator.getKernelHeader;
   8
   9 import java.io.IOException;
  10 import java.util.List;
  11 import java.util.Locale;
  12
  13 import javax.security.auth.Subject;
  14 import javax.security.auth.callback.Callback;
  15 import javax.security.auth.callback.CallbackHandler;
  16 import javax.security.auth.callback.LanguageCallback;
  17 import javax.security.auth.callback.NameCallback;
  18 import javax.security.auth.callback.PasswordCallback;
  19 import javax.security.auth.callback.UnsupportedCallbackException;
  20 import javax.security.auth.login.LoginContext;
  21 import javax.security.auth.login.LoginException;
  22
  23 import org.argeo.cms.CmsException;
  24 import org.argeo.cms.CmsMsg;
  25 import org.argeo.cms.CmsStyles;
  26 import org.argeo.cms.CmsView;
  27 import org.argeo.cms.auth.CurrentUser;
  28 import org.argeo.cms.auth.HttpRequestCallback;
  29 import org.argeo.cms.i18n.Msg;
  30 import org.argeo.cms.util.CmsUtils;
  31 import org.argeo.util.LocaleChoice;
  32 import org.eclipse.rap.rwt.RWT;
  33 import org.eclipse.swt.SWT;
  34 import org.eclipse.swt.events.MouseAdapter;
  35 import org.eclipse.swt.events.MouseEvent;
  36 import org.eclipse.swt.events.SelectionAdapter;
  37 import org.eclipse.swt.events.SelectionEvent;
  38 import org.eclipse.swt.events.SelectionListener;
  39 import org.eclipse.swt.events.TraverseEvent;
  40 import org.eclipse.swt.events.TraverseListener;
  41 import org.eclipse.swt.layout.GridData;
  42 import org.eclipse.swt.layout.GridLayout;
  43 import org.eclipse.swt.widgets.Button;
  44 import org.eclipse.swt.widgets.Composite;
  45 import org.eclipse.swt.widgets.Control;
  46 import org.eclipse.swt.widgets.Label;
  47 import org.eclipse.swt.widgets.Shell;
  48 import org.eclipse.swt.widgets.Text;
  49
  50 public class CmsLogin implements CmsStyles, CallbackHandler {
  51         private Text usernameT, passwordT;
  52         private Composite credentialsBlock;
  53
  54         private final Locale defaultLocale;
  55         private LocaleChoice localeChoice = null;
  56
  57         private final CmsView cmsView;
  58
  59         public CmsLogin(CmsView cmsView) {
  60                 this.cmsView = cmsView;
  61                 defaultLocale = getKernelHeader().getDefaultLocale();
  62                 List<Locale> locales = getKernelHeader().getLocales();
  63                 if (locales != null)
  64                         localeChoice = new LocaleChoice(locales, defaultLocale);
  65         }
  66
  67         protected boolean isAnonymous() {
  68                 return CurrentUser.isAnonymous(cmsView.getSubject());
  69         }
  70
  71         public void createContents(Composite parent) {
  72                 defaultCreateContents(parent);
  73         }
  74
  75         public final void defaultCreateContents(Composite parent) {
  76                 parent.setLayout(CmsUtils.noSpaceGridLayout());
  77                 Composite credentialsBlock = createCredentialsBlock(parent);
  78                 if (parent instanceof Shell) {
  79                         credentialsBlock.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER,
  80                                         true, true));
  81                 }
  82         }
  83
  84         public final Composite createCredentialsBlock(Composite parent) {
  85                 if (isAnonymous()) {
  86                         return anonymousUi(parent);
  87                 } else {
  88                         return userUi(parent);
  89                 }
  90         }
  91
  92         protected Composite getCredentialsBlock() {
  93                 return credentialsBlock;
  94         }
  95
  96         protected Composite userUi(Composite parent) {
  97                 credentialsBlock = new Composite(parent, SWT.NONE);
  98                 credentialsBlock.setLayout(new GridLayout());
  99                 credentialsBlock.setLayoutData(CmsUtils.fillAll());
 100
 101                 specificUserUi(credentialsBlock);
 102
 103                 Label l = new Label(credentialsBlock, SWT.NONE);
 104                 l.setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU_ITEM);
 105                 l.setText(CmsMsg.logout.lead());
 106                 GridData lData = CmsUtils.fillWidth();
 107                 lData.widthHint = 120;
 108                 l.setLayoutData(lData);
 109
 110                 l.addMouseListener(new MouseAdapter() {
 111                         private static final long serialVersionUID = 6444395812777413116L;
 112
 113                         public void mouseDown(MouseEvent e) {
 114                                 logout();
 115                         }
 116                 });
 117                 return credentialsBlock;
 118         }
 119
 120         /** To be overridden */
 121         protected void specificUserUi(Composite parent) {
 122
 123         }
 124
 125         protected Composite anonymousUi(Composite parent) {
 126                 // We need a composite for the traversal
 127                 credentialsBlock = new Composite(parent, SWT.NONE);
 128                 credentialsBlock.setLayout(new GridLayout());
 129                 credentialsBlock.setLayoutData(CmsUtils.fillAll());
 130
 131                 Integer textWidth = 120;
 132                 parent.setData(RWT.CUSTOM_VARIANT, CMS_USER_MENU);
 133
 134                 // new Label(this, SWT.NONE).setText(CmsMsg.username.lead());
 135                 usernameT = new Text(credentialsBlock, SWT.BORDER);
 136                 usernameT.setMessage(username.lead(defaultLocale));
 137                 usernameT.setData(RWT.CUSTOM_VARIANT, CMS_LOGIN_DIALOG_USERNAME);
 138                 GridData gd = CmsUtils.fillWidth();
 139                 gd.widthHint = textWidth;
 140                 usernameT.setLayoutData(gd);
 141
 142                 // new Label(this, SWT.NONE).setText(CmsMsg.password.lead());
 143                 passwordT = new Text(credentialsBlock, SWT.BORDER | SWT.PASSWORD);
 144                 passwordT.setMessage(password.lead(defaultLocale));
 145                 passwordT.setData(RWT.CUSTOM_VARIANT, CMS_LOGIN_DIALOG_PASSWORD);
 146                 gd = CmsUtils.fillWidth();
 147                 gd.widthHint = textWidth;
 148                 passwordT.setLayoutData(gd);
 149
 150                 TraverseListener tl = new TraverseListener() {
 151                         private static final long serialVersionUID = -1158892811534971856L;
 152
 153                         public void keyTraversed(TraverseEvent e) {
 154                                 if (e.detail == SWT.TRAVERSE_RETURN)
 155                                         login();
 156                         }
 157                 };
 158                 credentialsBlock.addTraverseListener(tl);
 159                 usernameT.addTraverseListener(tl);
 160                 passwordT.addTraverseListener(tl);
 161                 parent.setTabList(new Control[] { credentialsBlock });
 162                 credentialsBlock.setTabList(new Control[] { usernameT, passwordT });
 163                 credentialsBlock.setFocus();
 164
 165                 if (localeChoice != null)
 166                         createLocalesBlock(credentialsBlock);
 167                 return credentialsBlock;
 168         }
 169
 170         protected Composite createLocalesBlock(final Composite parent) {
 171                 Composite c = new Composite(parent, SWT.NONE);
 172                 c.setLayout(CmsUtils.noSpaceGridLayout());
 173                 c.setLayoutData(CmsUtils.fillAll());
 174
 175                 SelectionListener selectionListener = new SelectionAdapter() {
 176                         private static final long serialVersionUID = 4891637813567806762L;
 177
 178                         public void widgetSelected(SelectionEvent event) {
 179                                 localeChoice.setSelectedIndex((Integer) event.widget.getData());
 180                                 Locale selectedLocale = localeChoice.getSelectedLocale();
 181                                 usernameT.setMessage(username.lead(selectedLocale));
 182                                 passwordT.setMessage(password.lead(selectedLocale));
 183                         };
 184                 };
 185
 186                 List<Locale> locales = localeChoice.getLocales();
 187                 for (Integer i = 0; i < locales.size(); i++) {
 188                         Locale locale = locales.get(i);
 189                         Button button = new Button(c, SWT.RADIO);
 190                         button.setData(i);
 191                         button.setText(Msg.lead(locale.getDisplayName(locale), locale)
 192                                         + " (" + locale + ")");
 193                         // button.addListener(SWT.Selection, listener);
 194                         button.addSelectionListener(selectionListener);
 195                         if (i == localeChoice.getDefaultIndex())
 196                                 button.setSelection(true);
 197                 }
 198                 return c;
 199         }
 200
 201         protected void login() {
 202                 Subject subject = cmsView.getSubject();
 203                 LoginContext loginContext;
 204                 try {
 205                         //
 206                         // LOGIN
 207                         //
 208                         new LoginContext(LOGIN_CONTEXT_ANONYMOUS, subject).logout();
 209                         loginContext = new LoginContext(LOGIN_CONTEXT_USER, subject, this);
 210                         loginContext.login();
 211                 } catch (LoginException e1) {
 212                         throw new CmsException("Cannot authenticate", e1);
 213                 }
 214                 cmsView.authChange(loginContext);
 215         }
 216
 217         protected void logout() {
 218                 cmsView.logout();
 219                 cmsView.navigateTo("~");
 220         }
 221
 222         @Override
 223         public void handle(Callback[] callbacks) throws IOException,
 224                         UnsupportedCallbackException {
 225                 for (Callback callback : callbacks) {
 226                         if (callback instanceof NameCallback)
 227                                 ((NameCallback) callback).setName(usernameT.getText());
 228                         else if (callback instanceof PasswordCallback)
 229                                 ((PasswordCallback) callback).setPassword(passwordT
 230                                                 .getTextChars());
 231                         else if (callback instanceof HttpRequestCallback)
 232                                 ((HttpRequestCallback) callback).setRequest(RWT.getRequest());
 233                         else if (callback instanceof LanguageCallback
 234                                         && localeChoice != null)
 235                                 ((LanguageCallback) callback).setLocale(localeChoice
 236                                                 .getSelectedLocale());
 237                 }
 238         }
 239
 240 }