Java identicon support.

MasterPassword/Java/masterpassword-algorithm/src/main/java/com/lyndir/masterpassword/MPIdenticon.java

@@ -0,0 +1,106 @@
+package com.lyndir.masterpassword;
+
+import static com.lyndir.lhunath.opal.system.util.StringUtils.strf;
+
+import com.google.common.collect.ImmutableMap;
+import com.lyndir.lhunath.opal.system.MessageAuthenticationDigests;
+import com.lyndir.lhunath.opal.system.logging.Logger;
+import java.awt.*;
+import java.nio.*;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Map;
+
+
+/**
+ * @author lhunath, 15-03-29
+ */
+public class MPIdenticon {
+
+    @SuppressWarnings("UnusedDeclaration")
+    private static final Logger logger = Logger.get( MPIdenticon.class );
+
+    private static final Charset charset = StandardCharsets.UTF_8;
+    private static final Color[] colors  = new Color[]{
+            Color.RED, Color.GREEN, Color.YELLOW, Color.BLUE, Color.MAGENTA, Color.CYAN, Color.MONO };
+    private static final char[] leftArm   = new char[]{ '╔', '╚', '╰', '═' };
+    private static final char[] rightArm  = new char[]{ '╗', '╝', '╯', '═' };
+    private static final char[] body      = new char[]{ '█', '░', '▒', '▓', '☺', '☻' };
+    private static final char[] accessory = new char[]{
+            '◈', '◎', '◐', '◑', '◒', '◓', '☀', '☁', '☂', '☃', '☄', '★', '☆', '☎', '☏', '⎈', '⌂', '☘', '☢', '☣', '☕', '⌚', '⌛', '⏰', '⚡',
+            '⛄', '⛅', '☔', '♔', '♕', '♖', '♗', '♘', '♙', '♚', '♛', '♜', '♝', '♞', '♟', '♨', '♩', '♪', '♫', '⚐', '⚑', '⚔', '⚖', '⚙', '⚠',
+            '⌘', '⏎', '✄', '✆', '✈', '✉', '✌' };
+
+    private final String         fullName;
+    private final Color          color;
+    private final String         text;
+
+    public MPIdenticon(String fullName, String masterPassword) {
+        this( fullName, masterPassword.toCharArray() );
+    }
+
+    public MPIdenticon(String fullName, char[] masterPassword) {
+        this.fullName = fullName;
+
+        byte[] masterPasswordBytes = charset.encode( CharBuffer.wrap( masterPassword ) ).array();
+        ByteBuffer identiconSeedBytes = ByteBuffer.wrap(
+                MessageAuthenticationDigests.HmacSHA256.of( masterPasswordBytes, fullName.getBytes( charset ) ) );
+        Arrays.fill( masterPasswordBytes, (byte) 0 );
+
+        IntBuffer identiconSeedBuffer = IntBuffer.allocate( identiconSeedBytes.capacity() );
+        while (identiconSeedBytes.hasRemaining())
+            identiconSeedBuffer.put( identiconSeedBytes.get() & 0xFF );
+        int[] identiconSeed = identiconSeedBuffer.array();
+
+        color = colors[identiconSeed[4] % colors.length];
+        text = strf( "%c%c%c%c", leftArm[identiconSeed[0] % leftArm.length], body[identiconSeed[1] % body.length],
+                     rightArm[identiconSeed[2] % rightArm.length], accessory[identiconSeed[3] % accessory.length] );
+    }
+
+    public String getFullName() {
+        return fullName;
+    }
+
+    public String getText() {
+        return text;
+    }
+
+    public Color getColor() {
+        return color;
+    }
+
+    public enum BackgroundMode {
+        DARK, LIGHT
+    }
+
+
+    public enum Color {
+        RED( "#dc322f", "#dc322f" ),
+        GREEN( "#859900", "#859900" ),
+        YELLOW( "#b58900", "#b58900" ),
+        BLUE( "#268bd2", "#268bd2" ),
+        MAGENTA( "#d33682", "#d33682" ),
+        CYAN( "#2aa198", "#2aa198" ),
+        MONO( "#93a1a1", "#586e75" );
+
+        private final String rgbDark;
+        private final String rgbLight;
+
+        Color(final String rgbDark, final String rgbLight) {
+            this.rgbDark = rgbDark;
+            this.rgbLight = rgbLight;
+        }
+
+        public java.awt.Color getAWTColor(BackgroundMode backgroundMode) {
+            switch (backgroundMode) {
+                case DARK:
+                    return new java.awt.Color( Integer.decode( rgbDark ) );
+                case LIGHT:
+                    return new java.awt.Color( Integer.decode( rgbLight ) );
+            }
+
+            throw new UnsupportedOperationException( "Unsupported background mode: " + backgroundMode );
+        }
+    }
+}

MasterPassword/Java/masterpassword-algorithm/src/main/java/com/lyndir/masterpassword/MasterKey.java

@@ -65,6 +65,7 @@ public abstract class MasterKey {
     @Nonnull
     protected byte[] getKey() {
 
+        Preconditions.checkState( isValid() );
         return Preconditions.checkNotNull( masterKey );
     }
 

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/AuthenticationPanel.java

@@ -1,9 +1,13 @@
 package com.lyndir.masterpassword.gui;
 
 import com.google.common.collect.ImmutableList;
+import com.lyndir.masterpassword.MPIdenticon;
 import com.lyndir.masterpassword.gui.util.Components;
 import java.awt.*;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 import javax.swing.*;
+import org.jetbrains.annotations.NotNull;
 
 
 /**
@@ -29,6 +33,8 @@ public abstract class AuthenticationPanel extends Components.GradientPanel {
             }
         } );
         add( Box.createVerticalGlue() );
+
+        avatarLabel.setToolTipText( "The avatar for your user.  Click to change it." );
     }
 
     protected void updateUser(boolean repack) {
@@ -39,8 +45,11 @@ public abstract class AuthenticationPanel extends Components.GradientPanel {
             unlockFrame.repack();
     }
 
+    @Nullable
     protected abstract User getSelectedUser();
 
+    @NotNull
+    @Nonnull
     public abstract char[] getMasterPassword();
 
     public Component getFocusComponent() {

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/IncognitoAuthenticationPanel.java

@@ -7,6 +7,7 @@ import java.awt.event.ActionListener;
 import javax.swing.*;
 import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
+import org.jetbrains.annotations.NotNull;
 
 
 /**
@@ -58,6 +59,7 @@ public class IncognitoAuthenticationPanel extends AuthenticationPanel implements
         return new IncognitoUser( fullNameField.getText() );
     }
 
+    @NotNull
     @Override
     public char[] getMasterPassword() {
         return masterPasswordField.getPassword();

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/ModelAuthenticationPanel.java

@@ -14,6 +14,7 @@ import javax.swing.*;
 import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
 import javax.swing.plaf.metal.MetalComboBoxEditor;
+import org.jetbrains.annotations.NotNull;
 
 
 /**
@@ -104,6 +105,7 @@ public class ModelAuthenticationPanel extends AuthenticationPanel implements Ite
         return userField.getModel().getElementAt( selectedIndex );
     }
 
+    @NotNull
     @Override
     public char[] getMasterPassword() {
         return masterPasswordField.getPassword();
@@ -124,6 +126,7 @@ public class ModelAuthenticationPanel extends AuthenticationPanel implements Ite
                         updateUser( true );
                     }
                 } );
+                setToolTipText( "Add a new user to the list." );
             }
         }, new JButton( Res.iconQuestion() ) {
             {
@@ -131,10 +134,11 @@ public class ModelAuthenticationPanel extends AuthenticationPanel implements Ite
                     @Override
                     public void actionPerformed(final ActionEvent e) {
                         JOptionPane.showMessageDialog( ModelAuthenticationPanel.this, //
-                                                       "Reads users and sites from the directory at ~/.mpw.", //
+                                                       "Reads users and sites from the directory at ~/.mpw.d.", //
                                                        "Help", JOptionPane.INFORMATION_MESSAGE );
                     }
                 } );
+                setToolTipText( "More information." );
             }
         } );
     }

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/PasswordFrame.java

@@ -53,7 +53,7 @@ public class PasswordFrame extends JFrame implements DocumentListener {
         add( Components.borderPanel( sitePanel, BorderFactory.createRaisedBevelBorder(), Res.colors().frameBg() ), BorderLayout.CENTER );
 
         // User
-        sitePanel.add( Components.label( strf( "Generating passwords for: %s", user.getFullName() ), JLabel.CENTER ) );
+        sitePanel.add( Components.label( strf( "Generating passwords for: %s", user.getFullName() ), SwingConstants.CENTER ) );
         sitePanel.add( Components.stud() );
 
         // Site Name
@@ -161,7 +161,7 @@ public class PasswordFrame extends JFrame implements DocumentListener {
         updateMask();
 
         // Tip
-        tipLabel = Components.label( " ", JLabel.CENTER );
+        tipLabel = Components.label( " ", SwingConstants.CENTER );
         tipLabel.setAlignmentX( Component.CENTER_ALIGNMENT );
         JPanel passwordContainer = Components.boxLayout( BoxLayout.PAGE_AXIS, maskPasswordField, passwordField, tipLabel );
         passwordContainer.setOpaque( true );

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/Res.java

@@ -97,6 +97,10 @@ public abstract class Res {
         return 19;
     }
 
+    public static Font emoticonsFont() {
+        return emoticonsRegular();
+    }
+
     public static Font controlFont() {
         return arimoRegular();
     }
@@ -109,6 +113,10 @@ public abstract class Res {
         return sourceSansProBlack();
     }
 
+    public static Font emoticonsRegular() {
+        return font( "fonts/Emoticons-Regular.otf" );
+    }
+
     public static Font sourceCodeProRegular() {
         return font( "fonts/SourceCodePro-Regular.otf" );
     }

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/UnlockFrame.java

@@ -2,10 +2,12 @@ package com.lyndir.masterpassword.gui;
 
 import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 
+import com.lyndir.masterpassword.MPIdenticon;
 import com.lyndir.masterpassword.gui.util.Components;
 import com.lyndir.masterpassword.model.IncorrectMasterPasswordException;
 import java.awt.*;
 import java.awt.event.*;
+import javax.annotation.Nullable;
 import javax.swing.*;
 
 
@@ -16,6 +18,7 @@ public class UnlockFrame extends JFrame {
 
     private final SignInCallback           signInCallback;
     private final Components.GradientPanel root;
+    private final JLabel                   identiconLabel;
     private final JButton                  signInButton;
     private final JPanel                   authenticationContainer;
     private       AuthenticationPanel      authenticationPanel;
@@ -28,9 +31,6 @@ public class UnlockFrame extends JFrame {
         this.signInCallback = signInCallback;
 
         setDefaultCloseOperation( DISPOSE_ON_CLOSE );
-        setContentPane(root = Components.gradientPanel(new BorderLayout(20, 20), Res.colors().frameBg()));
-        root.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
-
         addWindowFocusListener( new WindowAdapter() {
             @Override
             public void windowGainedFocus(WindowEvent e) {
@@ -43,17 +43,27 @@ public class UnlockFrame extends JFrame {
             }
         } );
 
-        authenticationContainer = Components.boxLayout( BoxLayout.PAGE_AXIS );
-        authenticationContainer.setOpaque( true );
-        authenticationContainer.setBackground( Res.colors().controlBg() );
-        authenticationContainer.setBorder( BorderFactory.createEmptyBorder( 20, 20, 20, 20 ) );
-        add( Components.borderPanel( authenticationContainer, BorderFactory.createRaisedBevelBorder(), Res.colors().frameBg() ) );
-
         // Sign In
         JPanel signInBox = Components.boxLayout( BoxLayout.LINE_AXIS, Box.createGlue(), signInButton = Components.button( "Sign In" ),
                                                  Box.createGlue() );
         signInBox.setBackground( null );
-        root.add( signInBox, BorderLayout.SOUTH );
+
+        setContentPane( root = Components.gradientPanel( new FlowLayout(), Res.colors().frameBg() ) );
+        root.setLayout( new BoxLayout( root, BoxLayout.PAGE_AXIS ) );
+        root.setBorder( BorderFactory.createEmptyBorder( 20, 20, 20, 20 ) );
+        root.add( Components.borderPanel( authenticationContainer = Components.boxLayout( BoxLayout.PAGE_AXIS ),
+                                          BorderFactory.createRaisedBevelBorder(), Res.colors().frameBg() ) );
+        root.add( Box.createVerticalStrut( 8 ) );
+        root.add( identiconLabel = Components.label( " ", SwingConstants.CENTER ) );
+        root.add( Box.createVerticalStrut( 8 ) );
+        root.add( signInBox );
+
+        authenticationContainer.setOpaque( true );
+        authenticationContainer.setBackground( Res.colors().controlBg() );
+        authenticationContainer.setBorder( BorderFactory.createEmptyBorder( 20, 20, 20, 20 ) );
+        identiconLabel.setFont( Res.emoticonsFont().deriveFont( 14.f ) );
+        identiconLabel.setToolTipText(
+                "A representation of your identity across all Master Password apps.\nIt should always be the same." );
         signInButton.addActionListener( new AbstractAction() {
             @Override
             public void actionPerformed(final ActionEvent e) {
@@ -86,6 +96,7 @@ public class UnlockFrame extends JFrame {
         authenticationContainer.add( Components.stud() );
 
         final JCheckBox incognitoCheckBox = Components.checkBox( "Incognito" );
+        incognitoCheckBox.setToolTipText( "Log in without saving any information." );
         incognitoCheckBox.setSelected( incognito );
         incognitoCheckBox.addItemListener( new ItemListener() {
             @Override
@@ -104,6 +115,7 @@ public class UnlockFrame extends JFrame {
         authenticationContainer.add( toolsPanel );
         for (JButton button : authenticationPanel.getButtons()) {
             toolsPanel.add( button );
+            button.setBorder( BorderFactory.createEmptyBorder() );
             button.setMargin( new Insets( 0, 0, 0, 0 ) );
             button.setAlignmentX( RIGHT_ALIGNMENT );
             button.setContentAreaFilled( false );
@@ -121,13 +133,24 @@ public class UnlockFrame extends JFrame {
         } );
     }
 
-    void updateUser(User user) {
+    void updateUser(@Nullable User user) {
         this.user = user;
         checkSignIn();
     }
 
     boolean checkSignIn() {
-        boolean enabled = user != null && !user.getFullName().isEmpty() && authenticationPanel.getMasterPassword().length > 0;
+        String fullName = user == null? "": user.getFullName();
+        char[] masterPassword = authenticationPanel.getMasterPassword();
+        boolean enabled = !fullName.isEmpty() && masterPassword.length > 0;
+
+        if (fullName.isEmpty() || masterPassword.length == 0)
+            identiconLabel.setText( " " );
+        else {
+            MPIdenticon identicon = new MPIdenticon( fullName, masterPassword );
+            identiconLabel.setText( identicon.getText() );
+            identiconLabel.setForeground( identicon.getColor().getAWTColor( MPIdenticon.BackgroundMode.DARK ) );
+        }
+
         signInButton.setEnabled( enabled );
 
         return enabled;
@@ -170,7 +193,6 @@ public class UnlockFrame extends JFrame {
                         }
                     } );
                 }
-
             }
         } );
     }

MasterPassword/Java/masterpassword-gui/src/main/java/com/lyndir/masterpassword/gui/util/Components.java

@@ -126,12 +126,21 @@ public abstract class Components {
         };
     }
 
-    public static JLabel label(final String label) {
+    public static JLabel label(@Nullable String label) {
-        return label( label, JLabel.LEADING );
+        return label( label, SwingConstants.LEADING );
     }
 
-    public static JLabel label(final String label, final int alignment) {
+    /**
-        return new JLabel( label, alignment ) {
+     * @param horizontalAlignment One of the following constants
+     *                            defined in <code>SwingConstants</code>:
+     *                            <code>LEFT</code>,
+     *                            <code>CENTER</code>,
+     *                            <code>RIGHT</code>,
+     *                            <code>LEADING</code> or
+     *                            <code>TRAILING</code>.
+     */
+    public static JLabel label(@Nullable final String label, final int horizontalAlignment) {
+        return new JLabel( label, horizontalAlignment ) {
             {
                 setFont( Res.controlFont().deriveFont( 12f ) );
                 setAlignmentX( LEFT_ALIGNMENT );