2.7-java-6

.gitignore

@@ -7,6 +7,7 @@ Thumbs.db
 *.iml
 *.ipr
 *.iws
+out
 
 # Xcode IDE
 xcuserdata/

Dockerfile

@@ -1,9 +1,12 @@
-FROM alpine
+FROM debian:stable-slim
 
 # For i386
-#FROM i386/alpine
+#FROM i386/debian:stable-slim
 #ENTRYPOINT ["linux32", "--"]
 
-RUN apk add --no-cache git libtool automake autoconf make g++ bash openjdk8
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863199
+RUN mkdir -p /usr/share/man/man1
+
+RUN apt-get update && apt-get install -y default-jdk-headless git-core bash libtool automake autoconf make g++
 RUN git clone --depth=3 $(: --shallow-submodules) --recurse-submodules https://gitlab.com/MasterPassword/MasterPassword.git /mpw
 RUN cd /mpw/gradle && ./gradlew -i clean build

gradle/.idea/misc.xml

@@ -5,21 +5,31 @@
     <option name="myDefaultNotNull" value="javax.annotation.Nonnull" />
     <option name="myNullables">
       <value>
-        <list size="4">
+        <list size="9">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
           <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
           <item index="3" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.Nullable" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableDecl" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableType" />
         </list>
       </value>
     </option>
     <option name="myNotNulls">
       <value>
-        <list size="4">
+        <list size="9">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
           <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
           <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="javax.validation.constraints.NotNull" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="6" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.NonNull" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullDecl" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullType" />
         </list>
       </value>
     </option>

gradle/README.md

@@ -2,11 +2,11 @@ To build a release distribution:
 
 Desktop:
 
-    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_DESKTOP=$(mpw masterpassword-desktop) gradle clean masterpassword-gui:shadowJar
+    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_DESKTOP=$(mpw masterpassword-desktop) gradle --no-daemon clean masterpassword-gui:shadowJar
 
 Android:
 
-    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_ANDROID=$(mpw masterpassword-android) gradle clean masterpassword-android:assembleRelease
+    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_ANDROID=$(mpw masterpassword-android) gradle --no-daemon clean masterpassword-android:assembleRelease
 
 
 Note:

gradle/build.gradle

@@ -2,7 +2,7 @@ allprojects {
     apply plugin: 'findbugs'
 
     group = 'com.lyndir.masterpassword'
-    version = '2.7.1'
+    version = '2.7.6'
 
     tasks.withType( JavaCompile ) {
         options.encoding = 'UTF-8'

lib/bin/build_lib

@@ -32,8 +32,15 @@ PATH+=:/usr/local/bin
 needs() { _needs "$@"; }
 _needs() {
     local failed=0
-    for tool; do
+    for spec; do
-        hash "$tool" || { echo >&2 "Missing: $tool.  Please install this tool."; (( failed++ )); }
+        IFS=: read pkg tools <<< "$spec"
+        IFS=, read -a tools <<< "${tools:-$pkg}"
+        for tool in "${tools[@]}"; do
+            hash "$tool" 2>/dev/null && continue 2
+        done
+
+        echo >&2 "Missing: $pkg.  Please install this package."
+        (( failed++ ))
     done
 
     return $failed
@@ -51,15 +58,15 @@ _initialize() {
 #
 # Check if all tools needed for the default implementations are available.
 #
-# By default, this will check for `libtool` (for libtoolize), `automake` (for aclocal) and `autoconf` (for autoreconf).
+# By default, this will check for `libtool` (for libtoolize), `automake` (for aclocal), `autoconf` (for autoreconf) and make.
 initialize_needs() { _initialize_needs "$@"; }
 _initialize_needs() {
     if [[ $platform = windows ]]; then
         needs cmd
         export VSINSTALLDIR="${VSINSTALLDIR:-$(cd "$(cygpath -F 0x002a)/Microsoft Visual Studio"/*/*/Common7/.. && pwd)}"
-        [[ -e "$VSINSTALLDIR/Common7/Tools/VsMSBuildCmd.bat" ]] || { echo >&2 "Missing: msbuild.  Please install 'Build Tools for Visual Studio'."; return 1; }
+        [[ -e "$VSINSTALLDIR/Common7/Tools/VsMSBuildCmd.bat" ]] || { echo >&2 "Missing: msbuild.  Please install 'Build Tools for Visual Studio'.  See https://visualstudio.microsoft.com/downloads/?q=build+tools"; return 1; }
     else
-        needs libtool automake autoconf
+        needs libtool:libtoolize,glibtoolize automake autoconf make
     fi
 }
 
@@ -195,7 +202,7 @@ _target_build() {
 
     if [[ $platform = windows ]]; then
         # I cannot for the life of me figure out how to pass this command directly into cmd.
-        printf '"%%VSINSTALLDIR%%\Common7\Tools\VsMSBuildCmd.bat" && msbuild /t:Rebuild /p:Configuration=ReleaseDLL;Platform=%s;OutDir=%s' "$arch" "$(cygpath -w "${prefix##$PWD/}/$arch/")" > .build.bat
+        printf '"%%VSINSTALLDIR%%\Common7\Tools\VsMSBuildCmd.bat" && msbuild /t:Rebuild /p:Configuration=Release;Platform=%s;OutDir=%s' "$arch" "$(cygpath -w "${prefix##$PWD/}/$arch/")" > .build.bat
         cmd //c .build.bat
         rm -f .build.bat
     else
@@ -271,7 +278,10 @@ _finalize_merge() {
 # By default, this will run `make clean`.
 finalize_clean() { _finalize_clean "$@"; }
 _finalize_clean() {
-    [[ ! -e Makefile ]] || make -s clean
+    if [[ $platform = windows ]]; then :
+    else
+        [[ ! -e Makefile ]] || make -s clean
+    fi
 }
 
 # build <name> [<platform>]

lib/bin/build_libsodium-windows

@@ -1,4 +1,13 @@
 #!/usr/bin/env bash
 source "${BASH_SOURCE%/*}/build_lib"
 
+finalize_merge() {
+    local prefix=$1 platform=$2; shift 2
+    local archs=( "$@" )
+
+    cp -a "src/libsodium/include" "$prefix/out"
+    
+    _finalize_merge "$prefix" "$platform" "${archs[@]}"
+}
+
 build libsodium windows

platform-independent/c/core/build.gradle

@@ -35,7 +35,7 @@ library {
         }
         withType( GccCompatibleToolChain ) {
             eachPlatform {
-                cppCompiler.withArguments { addAll( ['-x', 'c', '-O3', '-std=c11', '-Werror', '-DMPW_SODIUM=1'] ) }
+                cppCompiler.withArguments { addAll( ['-x', 'c', '-O3', '-Werror', '-DMPW_SODIUM=1'] ) }
             }
         }
     }
@@ -69,14 +69,14 @@ library {
                 }
 
                 // libjson-c
-                archive.dependsOn project.tasks.maybeCreate( "build_libjson-c-${system}", Exec ).configure {
+                /*archive.dependsOn project.tasks.maybeCreate( "build_libjson-c-${system}", Exec ).configure {
                     commandLine 'bash', "$rootDir/../lib/bin/build_libjson-c-${system}"
                     privateHeaders.from "$rootDir/../lib/libjson-c/build-${system}~/out/include"
                     add( linkLibraries.name, fileTree( "$rootDir/../lib/libjson-c/build-${system}~/out/lib" ) )
                 }
                 clean.dependsOn project.tasks.maybeCreate( "clean_libjson-c-${system}", Exec ).configure {
                     commandLine 'bash', "$rootDir/../lib/bin/build_libjson-c-${system}", 'clean'
-                }
+                }*/
             }
         }
     }

platform-independent/c/core/src/mpw-jni.c

@@ -7,7 +7,7 @@
 
 // TODO: We may need to zero the jbytes safely.
 
-JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {
     JNIEnv* env;
     if ((*vm)->GetEnv( vm, (void **)&env, JNI_VERSION_1_6 ) != JNI_OK)
         return -1;

platform-independent/c/core/src/mpw-marshal-util.c

@@ -35,10 +35,10 @@ char *mpw_get_token(const char **in, const char *eol, char *delim) {
     return token;
 }
 
-time_t mpw_mktime(
+time_t mpw_timegm(const char *time) {
-        const char *time) {
 
     // TODO: Support for parsing non-UTC time strings
+    // Parse time as a UTC timestamp, into a tm.
     struct tm tm = { .tm_isdst = -1 };
     if (time && sscanf( time, "%4d-%2d-%2dT%2d:%2d:%2dZ",
             &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
@@ -46,8 +46,10 @@ time_t mpw_mktime(
         tm.tm_year -= 1900; // tm_year 0 = rfc3339 year  1900
         tm.tm_mon -= 1;     // tm_mon  0 = rfc3339 month 1
 
-        // mktime converts tm to local, setting tm_gmtoff; use it to offset the result back to UTC.
+        // mktime interprets tm as being local, we need to offset back to UTC (timegm/tm_gmtoff are non-standard).
-        return mktime( &tm ) + tm.tm_gmtoff;
+        time_t local_time = mktime( &tm ), local_dst = tm.tm_isdst > 0? 3600: 0;
+        time_t gmtoff = local_time + local_dst - mktime( gmtime( &local_time ) );
+        return local_time + gmtoff;
     }
 
     return false;

platform-independent/c/core/src/mpw-marshal-util.h

@@ -34,7 +34,7 @@
 char *mpw_get_token(
         const char **in, const char *eol, char *delim);
 /** Convert an RFC 3339 time string into epoch time. */
-time_t mpw_mktime(
+time_t mpw_timegm(
         const char *time);
 
 /// JSON parsing.

platform-independent/c/core/src/mpw-marshal.c

@@ -407,7 +407,7 @@ static void mpw_marshal_read_flat_info(
             if (strcmp( headerName, "Passwords" ) == 0)
                 info->redacted = strcmp( headerValue, "VISIBLE" ) != 0;
             if (strcmp( headerName, "Date" ) == 0)
-                info->date = mpw_mktime( headerValue );
+                info->date = mpw_timegm( headerValue );
 
             mpw_free_strings( &headerName, &headerValue, NULL );
             continue;
@@ -580,7 +580,7 @@ static MPMarshalledUser *mpw_marshal_read_flat(
                 return NULL;
             }
             MPAlgorithmVersion siteAlgorithm = (MPAlgorithmVersion)value;
-            time_t siteLastUsed = mpw_mktime( str_lastUsed );
+            time_t siteLastUsed = mpw_timegm( str_lastUsed );
             if (!siteLastUsed) {
                 *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid site last used: %s: %s", siteName, str_lastUsed ) };
                 return NULL;
@@ -650,7 +650,7 @@ static void mpw_marshal_read_json_info(
     if (fileFormat < 1)
         return;
     info->redacted = mpw_get_json_boolean( json_file, "export.redacted", true );
-    info->date = mpw_mktime( mpw_get_json_string( json_file, "export.date", NULL ) );
+    info->date = mpw_timegm( mpw_get_json_string( json_file, "export.date", NULL ) );
 
     // Section: "user"
     info->algorithm = (MPAlgorithmVersion)mpw_get_json_int( json_file, "user.algorithm", MPAlgorithmVersionCurrent );
@@ -707,7 +707,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
         *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid user default type: %u", defaultType ) };
         return NULL;
     }
-    time_t lastUsed = mpw_mktime( str_lastUsed );
+    time_t lastUsed = mpw_timegm( str_lastUsed );
     if (!lastUsed) {
         *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid user last used: %s", str_lastUsed ) };
         return NULL;
@@ -760,7 +760,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
         MPResultType siteLoginType = (MPResultType)mpw_get_json_int( json_site.val, "login_type", MPResultTypeTemplateName );
         unsigned int siteUses = (unsigned int)mpw_get_json_int( json_site.val, "uses", 0 );
         str_lastUsed = mpw_get_json_string( json_site.val, "last_used", NULL );
-        time_t siteLastUsed = mpw_mktime( str_lastUsed );
+        time_t siteLastUsed = mpw_timegm( str_lastUsed );
         if (!siteLastUsed) {
             *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid site last used: %s: %s", siteName, str_lastUsed ) };
             return NULL;

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/MPMasterKey.java

@@ -66,6 +66,7 @@ public class MPMasterKey {
      *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
      */
+    @Nonnull
     public byte[] getKeyID(final MPAlgorithm algorithm)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
@@ -87,6 +88,7 @@ public class MPMasterKey {
         return !invalidated;
     }
 
+    @Nonnull
     private byte[] masterKey(final MPAlgorithm algorithm)
             throws MPKeyUnavailableException, MPAlgorithmException {
         Preconditions.checkArgument( masterPassword.length > 0 );
@@ -109,6 +111,7 @@ public class MPMasterKey {
         return masterKey;
     }
 
+    @Nonnull
     private byte[] siteKey(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                            final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -141,13 +144,19 @@ public class MPMasterKey {
      *                    In the case of {@link MPResultTypeClass#Stateful} types, the result of
      *                    {@link #siteState(String, MPAlgorithm, UnsignedInteger, MPKeyPurpose, String, MPResultType, String)}.
      *
+     * @return {@code null} if the result type is missing a required parameter.
+     *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
      */
+    @Nullable
     public String siteResult(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                              final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                              final MPResultType resultType, @Nullable final String resultParam)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
+        if ((resultType.getTypeClass() == MPResultTypeClass.Stateful) && (resultParam == null))
+            return null;
+
         byte[] masterKey = masterKey( algorithm );
         byte[] siteKey   = siteKey( siteName, algorithm, siteCounter, keyPurpose, keyContext );
 
@@ -176,6 +185,7 @@ public class MPMasterKey {
      *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
      */
+    @Nonnull
     public String siteState(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                             final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                             final MPResultType resultType, final String resultParam)

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/MPResultType.java

@@ -41,7 +41,7 @@ public enum MPResultType {
     /**
      * 16: pg^VMAUBk5x3p%HP%i4=
      */
-    GeneratedMaximum( "maximum", "Maximum Security", "pg^VMAUBk5x3p%HP%i4=", "20 characters, contains symbols.", //
+    GeneratedMaximum( "maximum", "Maximum Security", "pg^VMAUBk5x3p%HP%i4=", "20 characters, contains symbols", //
                       ImmutableList.of( new MPTemplate( "anoxxxxxxxxxxxxxxxxx" ),
                                         new MPTemplate( "axxxxxxxxxxxxxxxxxno" ) ), //
                       MPResultTypeClass.Template, 0x0 ),
@@ -49,7 +49,7 @@ public enum MPResultType {
     /**
      * 17: BiroYena8:Kixa
      */
-    GeneratedLong( "long", "Long Password", "BiroYena8:Kixa", "Copy-friendly, 14 characters, contains symbols.", //
+    GeneratedLong( "long", "Long Password", "BiroYena8:Kixa", "Copy-friendly, 14 characters, contains symbols", //
                    ImmutableList.of( new MPTemplate( "CvcvnoCvcvCvcv" ), new MPTemplate( "CvcvCvcvnoCvcv" ),
                                      new MPTemplate( "CvcvCvcvCvcvno" ), new MPTemplate( "CvccnoCvcvCvcv" ),
                                      new MPTemplate( "CvccCvcvnoCvcv" ), new MPTemplate( "CvccCvcvCvcvno" ),
@@ -66,7 +66,7 @@ public enum MPResultType {
     /**
      * 18: BirSuj0-
      */
-    GeneratedMedium( "medium", "Medium Password", "BirSuj0-", "Copy-friendly, 8 characters, contains symbols.", //
+    GeneratedMedium( "medium", "Medium Password", "BirSuj0-", "Copy-friendly, 8 characters, contains symbols", //
                      ImmutableList.of( new MPTemplate( "CvcnoCvc" ),
                                        new MPTemplate( "CvcCvcno" ) ), //
                      MPResultTypeClass.Template, 0x2 ),
@@ -74,14 +74,14 @@ public enum MPResultType {
     /**
      * 19: Bir8
      */
-    GeneratedShort( "short", "Short Password", "Bir8", "Copy-friendly, 4 characters, no symbols.", //
+    GeneratedShort( "short", "Short Password", "Bir8", "Copy-friendly, 4 characters, no symbols", //
                     ImmutableList.of( new MPTemplate( "Cvcn" ) ), //
                     MPResultTypeClass.Template, 0x3 ),
 
     /**
      * 20: pO98MoD0
      */
-    GeneratedBasic( "basic", "Basic Password", "pO98MoD0", "8 characters, no symbols.", //
+    GeneratedBasic( "basic", "Basic Password", "pO98MoD0", "8 characters, no symbols", //
                     ImmutableList.of( new MPTemplate( "aaanaaan" ),
                                       new MPTemplate( "aannaaan" ),
                                       new MPTemplate( "aaannaaa" ) ), //
@@ -90,44 +90,44 @@ public enum MPResultType {
     /**
      * 21: 2798
      */
-    GeneratedPIN( "pin", "PIN Code", "2798", "4 numbers.", //
+    GeneratedPIN( "pin", "PIN Code", "2798", "4 numbers", //
                   ImmutableList.of( new MPTemplate( "nnnn" ) ), //
                   MPResultTypeClass.Template, 0x5 ),
 
     /**
      * 30: birsujano
      */
-    GeneratedName( "name", "Name", "birsujano", "9 letter name.", //
+    GeneratedName( "name", "Name", "birsujano", "9 letter name", //
                    ImmutableList.of( new MPTemplate( "cvccvcvcv" ) ), //
                    MPResultTypeClass.Template, 0xE ),
 
     /**
      * 31: bir yennoquce fefi
      */
-    GeneratedPhrase( "phrase", "Phrase", "bir yennoquce fefi", "20 character sentence.", //
+    GeneratedPhrase( "phrase", "Phrase", "bir yennoquce fefi", "20 character sentence", //
                      ImmutableList.of( new MPTemplate( "cvcc cvc cvccvcv cvc" ),
                                        new MPTemplate( "cvc cvccvcvcv cvcv" ),
                                        new MPTemplate( "cv cvccv cvc cvcvccv" ) ), //
                      MPResultTypeClass.Template, 0xF ),
 
     /**
-     * 1056: Custom saved password.
+     * 1056: Custom saved value.
      */
-    StoredPersonal( "personal", "Saved Password", null, "AES-encrypted, exportable.", //
+    StoredPersonal( "personal", "Saved", null, "AES-encrypted, exportable", //
                     ImmutableList.<MPTemplate>of(), //
                     MPResultTypeClass.Stateful, 0x0, MPSiteFeature.ExportContent ),
 
     /**
-     * 2081: Custom saved password that should not be exported from the device.
+     * 2081: Custom saved value that should not be exported from the device.
      */
-    StoredDevicePrivate( "device", "Private Password", null, "AES-encrypted, not exported.", //
+    StoredDevicePrivate( "device", "Private", null, "AES-encrypted, not exported", //
                          ImmutableList.<MPTemplate>of(), //
                          MPResultTypeClass.Stateful, 0x1, MPSiteFeature.DevicePrivate ),
 
     /**
      * 4160: Derive a unique binary key.
      */
-    DeriveKey( "key", "Binary Key", null, "Encryption key.", //
+    DeriveKey( "key", "Binary Key", null, "Encryption key", //
                ImmutableList.<MPTemplate>of(), //
                MPResultTypeClass.Derive, 0x0, MPSiteFeature.Alternative );
 

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/Native.java

@@ -18,14 +18,14 @@
 
 package com.lyndir.masterpassword.impl;
 
-import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
-
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
 import com.google.common.io.ByteStreams;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.io.*;
-import java.util.Locale;
+import java.util.*;
+import java.util.function.Predicate;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
@@ -43,71 +43,161 @@ public final class Native {
     private static final String NATIVES_PATH        = "lib";
 
     @SuppressWarnings({ "HardcodedFileSeparator", "LoadLibraryWithNonConstantString" })
-    public static void load(final Class<?> context, final String name) {
+    public static boolean load(final Class<?> context, final String name) {
 
         // Try to load the library using the native system.
         try {
             System.loadLibrary( name );
-            return;
+            return true;
         }
         catch (@SuppressWarnings("ErrorNotRethrown") final UnsatisfiedLinkError ignored) {
         }
 
         // Try to find and open a stream to the packaged library resource.
-        try {
+        String             library          = System.mapLibraryName( name );
-            String      library          = System.mapLibraryName( name );
+        int                libraryDot       = library.lastIndexOf( EXTENSION_SEPARATOR );
-            int         libraryDot       = library.lastIndexOf( EXTENSION_SEPARATOR );
+        String             libraryName      = (libraryDot > 0)? library.substring( 0, libraryDot ): library;
-            String      libraryName      = (libraryDot > 0)? library.substring( 0, libraryDot ): library;
+        String             libraryExtension = (libraryDot > 0)? library.substring( libraryDot ): ".lib";
-            String      libraryExtension = (libraryDot > 0)? library.substring( libraryDot ): ".lib";
-            String      libraryResource  = getLibraryResource( library );
-            InputStream libraryStream    = context.getResourceAsStream( libraryResource );
-            if (libraryStream == null)
-                throw new IllegalStateException(
-                        "Library: " + name + " (" + libraryResource + "), not found in class loader for: " + context );
 
-            // Write the library resource to a temporary file.
+        @Nullable
-            File             libraryFile       = File.createTempFile( libraryName, libraryExtension );
+        File libraryFile = null;
-            FileOutputStream libraryFileStream = new FileOutputStream( libraryFile );
+        Set<String> libraryResources = getLibraryResources( library );
+        for (final String libraryResource : libraryResources) {
             try {
-                libraryFile.deleteOnExit();
+                InputStream libraryStream = context.getResourceAsStream( libraryResource );
-                ByteStreams.copy( libraryStream, libraryFileStream );
+                if (libraryStream == null) {
-            }
+                    logger.dbg( "No resource for library: %s", libraryResource );
-            finally {
+                    continue;
-                libraryFileStream.close();
+                }
-                libraryStream.close();
-            }
 
-            // Load the library from the temporary file.
+                // Write the library resource to a temporary file.
-            System.load( libraryFile.getAbsolutePath() );
+                libraryFile = File.createTempFile( libraryName, libraryExtension );
-        }
+                FileOutputStream libraryFileStream = new FileOutputStream( libraryFile );
-        catch (final IOException e) {
+                try {
-            throw new IllegalStateException( "Couldn't extract library: " + name, e );
+                    libraryFile.deleteOnExit();
+                    ByteStreams.copy( libraryStream, libraryFileStream );
+                }
+                finally {
+                    libraryFileStream.close();
+                    libraryStream.close();
+                }
+
+                // Load the library from the temporary file.
+                System.load( libraryFile.getAbsolutePath() );
+                return true;
+            }
+            catch (@SuppressWarnings("ErrorNotRethrown") final IOException | UnsatisfiedLinkError e) {
+                logger.dbg( e, "Couldn't load library: %s", libraryResource );
+
+                if (libraryFile != null)
+                    if (libraryFile.exists() && !libraryFile.delete())
+                        logger.wrn( "Couldn't clean up library file: %s", libraryFile );
+                libraryFile = null;
+            }
         }
+
+        return false;
     }
 
     @Nonnull
-    private static String getLibraryResource(final String library) {
+    private static Set<String> getLibraryResources(final String library) {
-        String system       = ifNotNullElse( System.getProperty( "os.name" ), "linux" ).toLowerCase( Locale.ROOT );
-        String architecture = ifNotNullElse( System.getProperty( "os.arch" ), "x86" ).toLowerCase( Locale.ROOT );
-
         // Standardize system naming in accordance with masterpassword-core.
-        if (system.contains( "windows" ))
+        Sys system = Sys.findCurrent();
-            system = "windows";
-        else if (system.contains( "mac os x" ) || system.contains( "darwin" ) || system.contains( "osx" ))
-            system = "macos";
-        else
-            system = "linux";
 
         // Standardize architecture naming in accordance with masterpassword-core.
-        if (ImmutableList.of( "arm", "arm-v7", "armv7", "arm32" ).contains( architecture ))
+        Collection<Arch> architectures = new LinkedHashSet<>();
-            architecture = "arm";
+        architectures.add( Arch.findCurrent() );
-        else if (architecture.startsWith( "arm" ))
+        architectures.addAll( Arrays.asList( Arch.values() ) );
-            architecture = "arm64";
-        else if (ImmutableList.of( "x86_64", "amd64", "x64", "x86-64" ).contains( architecture ))
-            architecture = "x86_64";
-        else
-            architecture = "x86";
 
-        return Joiner.on( RESOURCE_SEPARATOR ).join( "", NATIVES_PATH, system, architecture, library );
+        ImmutableSet.Builder<String> resources = ImmutableSet.builder();
+        for (final Arch arch : architectures)
+            resources.add( Joiner.on( RESOURCE_SEPARATOR ).join( "", NATIVES_PATH, system, arch, library ) );
+
+        return resources.build();
+    }
+
+    private enum Sys implements Predicate<String> {
+        windows {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "windows" );
+            }
+        },
+        macos {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "mac os x" ) || system.contains( "darwin" ) || system.contains( "osx" );
+            }
+        },
+        linux {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "linux" );
+            }
+        };
+
+        @Nonnull
+        public static Sys findCurrent() {
+            return find( System.getProperty( "os.name" ) );
+        }
+
+        @Nonnull
+        public static Sys find(@Nullable String name) {
+            if (name != null) {
+                name = name.toLowerCase( Locale.ROOT );
+
+                for (final Sys sys : values())
+                    if (sys.test( name ))
+                        return sys;
+            }
+
+            return linux;
+        }
+    }
+
+
+    private enum Arch implements Predicate<String> {
+        arm {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "arm", "arm-v7", "armv7", "arm32" ).contains( architecture );
+            }
+        },
+        arm64 {
+            @Override
+            public boolean test(final String architecture) {
+                return architecture.startsWith( "arm" ) && !arm.test( architecture );
+            }
+        },
+        x86_64 {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "x86_64", "amd64", "x64", "x86-64" ).contains( architecture );
+            }
+        },
+        x86 {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "x86", "i386", "i686" ).contains( architecture );
+            }
+        };
+
+        @Nonnull
+        public static Arch findCurrent() {
+            return find( System.getProperty( "os.arch" ) );
+        }
+
+        @Nonnull
+        public static Arch find(@Nullable String name) {
+            if (name != null) {
+                name = name.toLowerCase( Locale.ROOT );
+
+                for (final Arch arch : values())
+                    if (arch.test( name ))
+                        return arch;
+            }
+
+            return x86;
+        }
     }
 }

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/util/Utilities.java

@@ -19,6 +19,14 @@ public final class Utilities {
         return consumer.apply( value );
     }
 
+    @Nonnull
+    public static <T> T ifNotNullElse(@Nullable final T value, @Nonnull final T nullValue) {
+        if (value == null)
+            return nullValue;
+
+        return value;
+    }
+
     @Nonnull
     public static <T, R> R ifNotNullElse(@Nullable final T value, final Function<T, R> consumer, @Nonnull final R nullValue) {
         if (value == null)

platform-independent/java/gui/build.gradle

@@ -11,6 +11,7 @@ dependencies {
     implementation group: 'com.lyndir.lhunath.opal', name: 'opal-system', version: '1.7-p2'
     implementation group: 'ch.qos.logback', name: 'logback-classic', version: '1.1.2'
     implementation group: 'com.yuvimasory', name: 'orange-extensions', version: '1.3.0'
+    implementation group: 'com.github.tulskiy', name: 'jkeymaster', version: '1.2'
 
     compile project( ':masterpassword-model' )
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/GUI.java

@@ -1,26 +0,0 @@
-package com.lyndir.masterpassword.gui;
-
-import com.lyndir.lhunath.opal.system.logging.Logger;
-import com.lyndir.masterpassword.gui.util.Platform;
-import com.lyndir.masterpassword.gui.util.Res;
-import com.lyndir.masterpassword.gui.view.MasterPasswordFrame;
-
-
-/**
- * @author lhunath, 2018-07-28
- */
-public class GUI {
-
-    private static final Logger logger = Logger.get( GUI.class );
-
-    private final MasterPasswordFrame frame = new MasterPasswordFrame();
-
-    public GUI() {
-        Platform.get().installAppForegroundHandler( this::open );
-        Platform.get().installAppReopenHandler( this::open );
-    }
-
-    public void open() {
-        Res.ui( () -> frame.setVisible( true ) );
-    }
-}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MPConfig.java

@@ -19,22 +19,22 @@
 package com.lyndir.masterpassword.gui;
 
 import com.lyndir.lhunath.opal.system.util.ConversionUtils;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 
 
 /**
  * @author lhunath, 2014-08-31
  */
 @SuppressWarnings("CallToSystemGetenv")
-public class Config {
+public class MPConfig {
 
-    private static final Config instance = new Config();
+    private static final MPConfig instance = new MPConfig();
 
-    public static Config get() {
+    public static MPConfig get() {
         return instance;
     }
 
     public boolean checkForUpdates() {
-        return ConversionUtils.toBoolean( System.getenv( MPConstants.env_checkUpdates ) ).orElse( true );
+        return ConversionUtils.toBoolean( System.getenv( MPModelConstants.env_checkUpdates ) ).orElse( true );
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MPGuiConstants.java

@@ -0,0 +1,14 @@
+package com.lyndir.masterpassword.gui;
+
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+import javax.swing.*;
+
+
+/**
+ * @author lhunath, 2018-07-31
+ */
+public final class MPGuiConstants {
+
+    public static final KeyStroke ui_hotkey = KeyStroke.getKeyStroke( KeyEvent.VK_P, InputEvent.CTRL_DOWN_MASK | InputEvent.META_DOWN_MASK );
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MasterPassword.java

@@ -24,7 +24,11 @@ import com.google.common.base.Charsets;
 import com.google.common.io.ByteSource;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ObjectUtils;
+import com.lyndir.masterpassword.gui.util.*;
+import com.lyndir.masterpassword.gui.view.MasterPasswordFrame;
 import com.lyndir.masterpassword.model.MPUser;
+import com.tulskiy.keymaster.common.Provider;
+import java.awt.*;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.*;
@@ -49,18 +53,21 @@ public final class MasterPassword {
     private final Collection<Listener> listeners = new CopyOnWriteArraySet<>();
 
     @Nullable
-    private MPUser<?> activeUser;
+    private MasterPasswordFrame frame;
+    @Nullable
+    private MPUser<?>           activeUser;
 
     public static MasterPassword get() {
         return instance;
     }
 
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        if (listeners.add( listener ))
+            listener.onUserSelected( activeUser );
     }
 
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     public void activateUser(final MPUser<?> user) {
@@ -72,9 +79,27 @@ public final class MasterPassword {
             listener.onUserSelected( activeUser );
     }
 
-    private static void checkUpdate() {
+    @Nullable
+    public String version() {
+        return MasterPassword.class.getPackage().getImplementationVersion();
+    }
+
+    public void open() {
+        Res.ui( () -> {
+            if (frame == null)
+                frame = new MasterPasswordFrame();
+
+            frame.setAlwaysOnTop( true );
+            frame.setVisible( true );
+            frame.setExtendedState( Frame.NORMAL );
+            Platform.get().requestForeground();
+            frame.setAlwaysOnTop( false );
+        } );
+    }
+
+    public void checkUpdate() {
         try {
-            String implementationVersion = MasterPassword.class.getPackage().getImplementationVersion();
+            String implementationVersion = version();
             String latestVersion = new ByteSource() {
                 @Override
                 public InputStream openStream()
@@ -86,16 +111,14 @@ public final class MasterPassword {
                 }
             }.asCharSource( Charsets.UTF_8 ).readFirstLine();
 
-            if ((implementationVersion != null) && (latestVersion != null) &&
+            if ((implementationVersion != null) && !implementationVersion.equalsIgnoreCase( latestVersion )) {
-                !implementationVersion.equalsIgnoreCase( latestVersion )) {
                 logger.inf( "Implementation: <%s>", implementationVersion );
                 logger.inf( "Latest        : <%s>", latestVersion );
                 logger.wrn( "You are not running the current official version.  Please update from:%n%s",
                             "https://masterpassword.app/masterpassword-gui.jar" );
-                JOptionPane.showMessageDialog( null,
+                JOptionPane.showMessageDialog( null, Components.linkLabel( strf(
-                                               strf( "A new version of Master Password is available.%n "
+                        "A new version of Master Password is available."
-                                                     + "Please download the latest version from %s",
+                        + "<p>Please download the latest version from <a href='https://masterpassword.app'>https://masterpassword.app</a>." ) ),
-                                                     "https://masterpassword.app" ),
                                                "Update Available", JOptionPane.INFORMATION_MESSAGE );
             }
         }
@@ -105,25 +128,30 @@ public final class MasterPassword {
     }
 
     public static void main(final String... args) {
-        //        Thread.setDefaultUncaughtExceptionHandler(
+        //Thread.setDefaultUncaughtExceptionHandler(
-        //                (t, e) -> logger.bug( e, "Uncaught: %s", e.getLocalizedMessage() ) );
+        //        (t, e) -> logger.bug( e, "Uncaught: %s", e.getLocalizedMessage() ) );
 
         // Try and set the system look & feel, if available.
         try {
             UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
+            Platform.get().installAppForegroundHandler( get()::open );
+            Platform.get().installAppReopenHandler( get()::open );
+            Provider.getCurrentProvider( true ).register( MPGuiConstants.ui_hotkey, hotKey -> get().open() );
         }
         catch (final UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException ignored) {
         }
 
-        // Check online to see if this version has been superseded.
-        if (Config.get().checkForUpdates())
-            checkUpdate();
-
         // Create a platform-specific GUI and open it.
-        new GUI().open();
+        get().open();
+
+        // Check online to see if this version has been superseded.
+        if (MPConfig.get().checkForUpdates())
+            get().checkUpdate();
     }
 
+    @SuppressWarnings("InterfaceMayBeAnnotatedFunctional")
     public interface Listener {
+
         void onUserSelected(@Nullable MPUser<?> user);
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoQuestion.java

@@ -31,17 +31,7 @@ import javax.annotation.Nullable;
  */
 public class MPIncognitoQuestion extends MPBasicQuestion {
 
-    private final MPIncognitoSite site;
-
     public MPIncognitoQuestion(final MPIncognitoSite site, final String keyword, @Nullable final MPResultType type) {
-        super( keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
+        super( site, keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
-
-        this.site = site;
-    }
-
-    @Nonnull
-    @Override
-    public MPIncognitoSite getSite() {
-        return site;
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoSite.java

@@ -40,4 +40,10 @@ public class MPIncognitoSite extends MPBasicSite<MPIncognitoUser, MPIncognitoQue
                            @Nullable final MPResultType resultType, @Nullable final MPResultType loginType) {
         super( user, siteName, (algorithm == null)? user.getAlgorithm(): algorithm, counter, resultType, loginType );
     }
+
+    @Nonnull
+    @Override
+    public MPIncognitoQuestion addQuestion(final String keyword) {
+        return addQuestion( new MPIncognitoQuestion( this, keyword, null ) );
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoUser.java

@@ -20,6 +20,7 @@ package com.lyndir.masterpassword.gui.model;
 
 import com.lyndir.masterpassword.MPAlgorithm;
 import com.lyndir.masterpassword.model.impl.MPBasicUser;
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 
@@ -38,6 +39,7 @@ public class MPIncognitoUser extends MPBasicUser<MPIncognitoSite> {
         return null;
     }
 
+    @Nonnull
     @Override
     public MPIncognitoSite addSite(final String siteName) {
         return addSite( new MPIncognitoSite( this, siteName ) );

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPNewQuestion.java

@@ -0,0 +1,15 @@
+package com.lyndir.masterpassword.gui.model;
+
+import com.lyndir.masterpassword.model.MPSite;
+import com.lyndir.masterpassword.model.impl.MPBasicQuestion;
+
+
+/**
+ * @author lhunath, 2018-07-27
+ */
+public class MPNewQuestion extends MPBasicQuestion {
+
+    public MPNewQuestion(final MPSite<?> site, final String keyword) {
+        super( site, keyword, site.getAlgorithm().mpw_default_answer_type() );
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPNewSite.java

@@ -2,6 +2,7 @@ package com.lyndir.masterpassword.gui.model;
 
 import com.lyndir.masterpassword.model.*;
 import com.lyndir.masterpassword.model.impl.*;
+import javax.annotation.Nonnull;
 
 
 /**
@@ -12,4 +13,10 @@ public class MPNewSite extends MPBasicSite<MPUser<?>, MPQuestion> {
     public MPNewSite(final MPUser<?> user, final String siteName) {
         super( user, siteName );
     }
+
+    @Nonnull
+    @Override
+    public MPQuestion addQuestion(final String keyword) {
+        throw new UnsupportedOperationException( "Cannot add a question to a site that hasn't been created yet." );
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/CollectionListModel.java

@@ -1,6 +1,5 @@
 package com.lyndir.masterpassword.gui.util;
 
-import com.google.common.collect.ImmutableList;
 import java.util.*;
 import java.util.function.Consumer;
 import javax.annotation.Nullable;
@@ -18,25 +17,21 @@ public class CollectionListModel<E> extends AbstractListModel<E>
 
     private final List<E>     model = new LinkedList<>();
     @Nullable
-    private       E           selectedItem;
     private       JList<E>    list;
     @Nullable
+    private       E           selectedItem;
+    @Nullable
     private       Consumer<E> selectionConsumer;
 
     @SafeVarargs
-    public static <E> CollectionListModel<E> copy(final E... elements) {
+    public CollectionListModel(final E... elements) {
-        return copy( Arrays.asList( elements ) );
+        this( Arrays.asList( elements ) );
     }
 
-    public static <E> CollectionListModel<E> copy(final Collection<? extends E> elements) {
+    public CollectionListModel(final Collection<? extends E> elements) {
-        CollectionListModel<E> model = new CollectionListModel<>();
+        model.addAll( elements );
-        synchronized (model) {
+        selectedItem = getElementAt( 0 );
-            model.model.addAll( elements );
+        fireIntervalAdded( this, 0, model.size() );
-            model.selectedItem = model.getElementAt( 0 );
-            model.fireIntervalAdded( model, 0, model.model.size() );
-
-            return model;
-        }
     }
 
     @Override
@@ -44,8 +39,8 @@ public class CollectionListModel<E> extends AbstractListModel<E>
         return model.size();
     }
 
-    @Override
     @Nullable
+    @Override
     public synchronized E getElementAt(final int index) {
         return (index < model.size())? model.get( index ): null;
     }
@@ -109,6 +104,11 @@ public class CollectionListModel<E> extends AbstractListModel<E>
         return selectedItem;
     }
 
+    public CollectionListModel<E> select(final E selectedItem) {
+        setSelectedItem( selectedItem );
+        return this;
+    }
+
     public synchronized void registerList(final JList<E> list) {
         // TODO: This class should probably implement ListSelectionModel instead.
         if (this.list != null)

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Components.java

@@ -18,10 +18,13 @@
 
 package com.lyndir.masterpassword.gui.util;
 
+import com.google.common.base.Strings;
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.io.File;
+import java.net.URISyntaxException;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.function.Consumer;
@@ -30,9 +33,9 @@ import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.border.Border;
 import javax.swing.border.CompoundBorder;
-import javax.swing.event.DocumentEvent;
+import javax.swing.event.HyperlinkEvent;
-import javax.swing.event.DocumentListener;
+import javax.swing.text.*;
-import javax.swing.text.DefaultFormatterFactory;
+import org.jetbrains.annotations.NonNls;
 
 
 /**
@@ -41,6 +44,8 @@ import javax.swing.text.DefaultFormatterFactory;
 @SuppressWarnings({ "SerializableStoresNonSerializable", "serial" })
 public abstract class Components {
 
+    private static final Logger logger = Logger.get( Components.class );
+
     public static final float TEXT_SIZE_HEADING = 19f;
     public static final float TEXT_SIZE_CONTROL = 13f;
     public static final int   SIZE_MARGIN       = 12;
@@ -96,19 +101,25 @@ public abstract class Components {
 
     public static int showDialog(@Nullable final Component owner, @Nullable final String title, final JOptionPane pane) {
         JDialog dialog = pane.createDialog( owner, title );
+        dialog.setMinimumSize( new Dimension( 520, 0 ) );
         dialog.setModalityType( Dialog.ModalityType.DOCUMENT_MODAL );
         showDialog( dialog );
 
         Object selectedValue = pane.getValue();
-        if(selectedValue == null)
+        if (selectedValue == null)
             return JOptionPane.CLOSED_OPTION;
 
         Object[] options = pane.getOptions();
-        if(options == null)
+        if (options == null)
             return (selectedValue instanceof Integer)? (Integer) selectedValue: JOptionPane.CLOSED_OPTION;
 
-        int option = Arrays.binarySearch( options, selectedValue );
+        try {
-        return (option < 0)? JOptionPane.CLOSED_OPTION: option;
+            int option = Arrays.binarySearch( options, selectedValue );
+            return (option < 0)? JOptionPane.CLOSED_OPTION: option;
+        }
+        catch (final ClassCastException ignored) {
+            return JOptionPane.CLOSED_OPTION;
+        }
     }
 
     @Nullable
@@ -139,7 +150,6 @@ public abstract class Components {
                                       title, Dialog.ModalityType.DOCUMENT_MODAL );
         dialog.setMinimumSize( new Dimension( 320, 0 ) );
         dialog.setLocationRelativeTo( owner );
-        dialog.setLocationByPlatform( true );
         dialog.setContentPane( content );
 
         return showDialog( dialog );
@@ -151,13 +161,18 @@ public abstract class Components {
         dialog.getRootPane().putClientProperty( "Window.style", "small" );
         dialog.pack();
 
+        dialog.setLocationByPlatform( true );
         dialog.setVisible( true );
 
         return dialog;
     }
 
     public static JTextField textField() {
-        return new JTextField() {
+        return textField( null );
+    }
+
+    public static JTextField textField(@Nullable final Document document) {
+        return new JTextField( document, null, 0 ) {
             {
                 setBorder( BorderFactory.createCompoundBorder( BorderFactory.createLineBorder( Res.colors().controlBorder(), 1, true ),
                                                                BorderFactory.createEmptyBorder( 4, 4, 4, 4 ) ) );
@@ -167,41 +182,30 @@ public abstract class Components {
 
             @Override
             public Dimension getMaximumSize() {
-                return new Dimension( Integer.MAX_VALUE, getPreferredSize().height );
+                return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
             }
         };
     }
 
-    public static JTextField textField(@Nullable final String text, @Nullable final Consumer<String> selection) {
+    public static JTextField textField(@Nullable final String text, @Nullable final Consumer<String> change) {
-        return new JTextField( text ) {
+        return textField( new DocumentModel( new PlainDocument() ).selection( text, change ).getDocument() );
+    }
+
+    public static JTextArea textArea() {
+        return new JTextArea() {
             {
                 setBorder( BorderFactory.createCompoundBorder( BorderFactory.createLineBorder( Res.colors().controlBorder(), 1, true ),
                                                                BorderFactory.createEmptyBorder( 4, 4, 4, 4 ) ) );
                 setFont( Res.fonts().valueFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
 
-                if (selection != null)
+                setLineWrap( true );
-                    getDocument().addDocumentListener( new DocumentListener() {
+                setRows( 3 );
-                        @Override
-                        public void insertUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-
-                        @Override
-                        public void removeUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-
-                        @Override
-                        public void changedUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-                    } );
             }
 
             @Override
             public Dimension getMaximumSize() {
-                return new Dimension( Integer.MAX_VALUE, getPreferredSize().height );
+                return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
             }
         };
     }
@@ -224,20 +228,24 @@ public abstract class Components {
     public static <E> JList<E> list(final ListModel<E> model, final Function<E, String> valueTransformer) {
         return new JList<E>( model ) {
             {
+                setAlignmentX( LEFT_ALIGNMENT );
                 setFont( Res.fonts().valueFont( TEXT_SIZE_CONTROL ) );
                 setCellRenderer( new DefaultListCellRenderer() {
                     @Override
                     @SuppressWarnings({ "unchecked", "SerializableStoresNonSerializable" })
                     public Component getListCellRendererComponent(final JList<?> list, final Object value, final int index,
                                                                   final boolean isSelected, final boolean cellHasFocus) {
+                        String label = valueTransformer.apply( (E) value );
                         super.getListCellRendererComponent(
-                                list, valueTransformer.apply( (E) value ), index, isSelected, cellHasFocus );
+                                list, Strings.isNullOrEmpty( label )? " ": label, index, isSelected, cellHasFocus );
                         setBorder( BorderFactory.createEmptyBorder( 2, 4, 2, 4 ) );
 
                         return this;
                     }
                 } );
-                setAlignmentX( LEFT_ALIGNMENT );
+
+                if (model instanceof CollectionListModel)
+                    ((CollectionListModel<E>) model).registerList( this );
             }
 
             @Override
@@ -293,7 +301,6 @@ public abstract class Components {
     public static JButton button(final Action action) {
         return new JButton( action ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
 
                 if (getText() == null) {
@@ -337,7 +344,7 @@ public abstract class Components {
                         BorderFactory.createEmptyBorder( 4, 4, 4, 4 ) );
                 DefaultFormatterFactory formatterFactory = new DefaultFormatterFactory();
                 if (model instanceof UnsignedIntegerModel)
-                    formatterFactory.setDefaultFormatter( ((UnsignedIntegerModel)model).getFormatter() );
+                    formatterFactory.setDefaultFormatter( ((UnsignedIntegerModel) model).getFormatter() );
                 ((DefaultEditor) getEditor()).getTextField().setFormatterFactory( formatterFactory );
                 ((DefaultEditor) getEditor()).getTextField().setBorder( editorBorder );
                 setAlignmentX( LEFT_ALIGNMENT );
@@ -370,7 +377,7 @@ public abstract class Components {
     public static JLabel heading(@Nullable final String heading, final int horizontalAlignment) {
         return new JLabel( heading, horizontalAlignment ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_HEADING ).deriveFont( Font.BOLD ) );
+                setFont( getFont().deriveFont( Font.BOLD, TEXT_SIZE_HEADING ) );
                 setAlignmentX( LEFT_ALIGNMENT );
             }
 
@@ -405,7 +412,6 @@ public abstract class Components {
     public static JLabel label(@Nullable final String label, final int horizontalAlignment) {
         return new JLabel( label, horizontalAlignment ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
             }
 
@@ -419,7 +425,6 @@ public abstract class Components {
     public static JCheckBox checkBox(final String label) {
         return new JCheckBox( label ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setBackground( null );
                 setAlignmentX( LEFT_ALIGNMENT );
             }
@@ -433,17 +438,17 @@ public abstract class Components {
 
     public static <E> JComboBox<E> comboBox(final E[] values, final Function<E, String> valueTransformer,
                                             @Nullable final E selectedItem, @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final Collection<E> values, final Function<E, String> valueTransformer,
                                             @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final Collection<E> values, final Function<E, String> valueTransformer,
                                             @Nullable final E selectedItem, @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final ComboBoxModel<E> model, final Function<E, String> valueTransformer) {
@@ -456,8 +461,9 @@ public abstract class Components {
                     @SuppressWarnings({ "unchecked", "SerializableStoresNonSerializable" })
                     public Component getListCellRendererComponent(final JList<?> list, final Object value, final int index,
                                                                   final boolean isSelected, final boolean cellHasFocus) {
+                        String label = valueTransformer.apply( (E) value );
                         super.getListCellRendererComponent(
-                                list, valueTransformer.apply( (E) value ), index, isSelected, cellHasFocus );
+                                list, Strings.isNullOrEmpty( label )? " ": label, index, isSelected, cellHasFocus );
                         setBorder( BorderFactory.createEmptyBorder( 0, 4, 0, 4 ) );
 
                         return this;
@@ -474,6 +480,24 @@ public abstract class Components {
         };
     }
 
+    public static JEditorPane linkLabel(@NonNls final String html) {
+        return new JEditorPane( "text/html", "<html><body style='width:640;font-family:sans-serif'>" + html ) {
+            {
+                setOpaque( false );
+                setEditable( false );
+                addHyperlinkListener( event -> {
+                    if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED)
+                        try {
+                            Platform.get().open( event.getURL().toURI() );
+                        }
+                        catch (final URISyntaxException e) {
+                            logger.err( e, "After triggering hyperlink: %s", event );
+                        }
+                } );
+            }
+        };
+    }
+
     public static class GradientPanel extends JPanel {
 
         @Nullable

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/ConsumingTrigger.java

@@ -0,0 +1,27 @@
+package com.lyndir.masterpassword.gui.util;
+
+import java.util.function.Consumer;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-08-23
+ */
+public class ConsumingTrigger<T> implements Consumer<T> {
+
+    private final Runnable trigger;
+
+    @Nullable
+    private T value;
+
+    public ConsumingTrigger(final Runnable trigger) {
+        this.trigger = trigger;
+    }
+
+    @Override
+    public void accept(final T t) {
+        value = t;
+
+        trigger.run();
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/DocumentModel.java

@@ -0,0 +1,95 @@
+package com.lyndir.masterpassword.gui.util;
+
+import com.lyndir.lhunath.opal.system.logging.Logger;
+import java.util.function.Consumer;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Document;
+
+
+/**
+ * @author lhunath, 2018-08-24
+ */
+public class DocumentModel implements Selectable<String, DocumentModel> {
+
+    private static final Logger logger = Logger.get( DocumentModel.class );
+
+    private final Document document;
+
+    @Nullable
+    private DocumentListener documentListener;
+
+    public DocumentModel(final Document document) {
+        this.document = document;
+    }
+
+    @Nonnull
+    public Document getDocument() {
+        return document;
+    }
+
+    @Nullable
+    public String getText() {
+        try {
+            return (document.getLength() > 0)? document.getText( 0, document.getLength() ): null;
+        }
+        catch (final BadLocationException e) {
+            logger.wrn( "While getting text for model", e );
+            return null;
+        }
+    }
+
+    public void setText(@Nullable final String text) {
+        try {
+            if (document.getLength() > 0)
+                document.remove( 0, document.getLength() );
+
+            if (text != null)
+                document.insertString( 0, text, null );
+        }
+        catch (final BadLocationException e) {
+            logger.err( "While setting text for model", e );
+        }
+    }
+
+    @Override
+    public DocumentModel selection(@Nullable final Consumer<String> selectionConsumer) {
+        if (documentListener != null)
+            document.removeDocumentListener( documentListener );
+
+        if (selectionConsumer != null)
+            document.addDocumentListener( documentListener = new DocumentListener() {
+                @Override
+                public void insertUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                @Override
+                public void removeUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                @Override
+                public void changedUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                private void trigger() {
+                    selectionConsumer.accept( getText() );
+                }
+            } );
+
+        return this;
+    }
+
+    @Override
+    public DocumentModel selection(@Nullable final String selectedItem, @Nullable final Consumer<String> selectionConsumer) {
+        selection( selectionConsumer );
+        setText( selectedItem );
+
+        return this;
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Res.java

@@ -25,12 +25,13 @@ import com.google.common.io.Resources;
 import com.google.common.util.concurrent.*;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.MPIdenticon;
-import com.lyndir.masterpassword.gui.SwingExecutorService;
 import java.awt.*;
 import java.io.IOException;
 import java.lang.ref.SoftReference;
 import java.util.Map;
 import java.util.concurrent.*;
+import java.util.function.Consumer;
+import javax.annotation.Nullable;
 import javax.swing.*;
 import org.jetbrains.annotations.NonNls;
 import org.joda.time.*;
@@ -72,6 +73,15 @@ public abstract class Res {
         return job( job, 0, TimeUnit.MILLISECONDS );
     }
 
+    public static <V> void job(final Callable<V> job, final Consumer<V> callback) {
+        Futures.addCallback( job( job, 0, TimeUnit.MILLISECONDS ), new FailableCallback<V>( logger ) {
+            @Override
+            public void onSuccess(@Nullable final V result) {
+                callback.accept( result );
+            }
+        }, uiExecutor() );
+    }
+
     public static <V> ListenableFuture<V> job(final Callable<V> job, final long delay, final TimeUnit timeUnit) {
         return jobExecutor.schedule( job, delay, timeUnit );
     }
@@ -138,6 +148,10 @@ public abstract class Res {
             return icon( "media/icon_import.png" );
         }
 
+        public Icon help() {
+            return icon( "media/icon_help.png" );
+        }
+
         public Icon export() {
             return icon( "media/icon_export.png" );
         }
@@ -146,6 +160,14 @@ public abstract class Res {
             return icon( "media/icon_settings.png" );
         }
 
+        public Icon edit() {
+            return icon( "media/icon_edit.png" );
+        }
+
+        public Icon key() {
+            return icon( "media/icon_key.png" );
+        }
+
         public Icon avatar(final int index) {
             return icon( strf( "media/avatar-%d.png", index % avatars() ) );
         }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Selectable.java

@@ -11,5 +11,5 @@ public interface Selectable<E, T> {
 
     T selection(@Nullable Consumer<E> selectionConsumer);
 
-    T selection(E selectedItem, @Nullable Consumer<E> selectionConsumer);
+    T selection(@Nullable E selectedItem, @Nullable Consumer<E> selectionConsumer);
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/SwingExecutorService.java

@@ -1,4 +1,4 @@
-package com.lyndir.masterpassword.gui;
+package com.lyndir.masterpassword.gui.util;
 
 import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 
@@ -29,9 +29,9 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public void shutdown() {
-        shutdown = true;
-
         synchronized (pendingCommands) {
+            shutdown = true;
+
             if (pendingCommands.isEmpty())
                 terminated.add( true );
         }
@@ -49,7 +49,9 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public boolean isShutdown() {
-        return shutdown;
+        synchronized (pendingCommands) {
+            return shutdown;
+        }
     }
 
     @Override
@@ -65,10 +67,10 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public void execute(@NotNull final Runnable command) {
-        if (shutdown)
-            throw new RejectedExecutionException( "Executor is shut down." );
-
         synchronized (pendingCommands) {
+            if (shutdown)
+                throw new RejectedExecutionException( "Executor is shut down." );
+
             pendingCommands.add( command );
         }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/UnsignedIntegerModel.java

@@ -109,13 +109,14 @@ public class UnsignedIntegerModel extends SpinnerNumberModel implements Selectab
     }
 
     @Override
-    public UnsignedIntegerModel selection(final UnsignedInteger selectedItem, @Nullable final Consumer<UnsignedInteger> selectionConsumer) {
+    public UnsignedIntegerModel selection(@Nullable final UnsignedInteger selectedItem,
+                                          @Nullable final Consumer<UnsignedInteger> selectionConsumer) {
         if (changeListener != null) {
             removeChangeListener( changeListener );
             changeListener = null;
         }
 
-        setValue( selectedItem );
+        setValue( (selectedItem != null)? selectedItem: getMinimum() );
         return selection( selectionConsumer );
     }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/ApplePlatform.java

@@ -3,9 +3,9 @@ package com.lyndir.masterpassword.gui.util.platform;
 import com.apple.eawt.*;
 import com.apple.eio.FileManager;
 import com.google.common.base.Preconditions;
-import com.google.common.base.Throwables;
+import com.lyndir.lhunath.opal.system.logging.Logger;
-import java.io.File;
+import java.io.*;
-import java.io.FileNotFoundException;
+import java.net.URI;
 
 
 /**
@@ -13,7 +13,8 @@ import java.io.FileNotFoundException;
  */
 public class ApplePlatform implements IPlatform {
 
-    static Application application = Preconditions.checkNotNull(
+    private static final Logger      logger      = Logger.get( ApplePlatform.class );
+    private static final Application application = Preconditions.checkNotNull(
             Application.getApplication(), "Not an Apple Java application." );
 
     @Override
@@ -37,12 +38,31 @@ public class ApplePlatform implements IPlatform {
         return true;
     }
 
+    @Override
+    public boolean requestForeground() {
+        application.requestForeground( true );
+        return true;
+    }
+
     @Override
     public boolean show(final File file) {
         try {
             return FileManager.revealInFinder( file );
         }
-        catch (final FileNotFoundException ignored) {
+        catch (final FileNotFoundException e) {
+            logger.err( e, "While showing: %s", file );
+            return false;
+        }
+    }
+
+    @Override
+    public boolean open(final URI url) {
+        try {
+            FileManager.openURL( url.toString() );
+            return true;
+        }
+        catch (final IOException e) {
+            logger.err( e, "While opening: %s", url );
             return false;
         }
     }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/BasePlatform.java

@@ -1,6 +1,7 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
 import java.io.File;
+import java.net.URI;
 
 
 /**
@@ -18,8 +19,18 @@ public class BasePlatform implements IPlatform {
         return false;
     }
 
+    @Override
+    public boolean requestForeground() {
+        return false;
+    }
+
     @Override
     public boolean show(final File file) {
         return false;
     }
+
+    @Override
+    public boolean open(final URI url) {
+        return false;
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/IPlatform.java

@@ -1,6 +1,8 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
 import java.io.File;
+import java.net.URI;
+import java.net.URL;
 
 
 /**
@@ -12,5 +14,9 @@ public interface IPlatform {
 
     boolean installAppReopenHandler(Runnable handler);
 
+    boolean requestForeground();
+
     boolean show(File file);
+
+    boolean open(URI url);
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/JDK9Platform.java

@@ -1,8 +1,11 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.awt.*;
 import java.awt.desktop.*;
 import java.io.File;
+import java.io.IOException;
+import java.net.URI;
 
 
 /**
@@ -11,9 +14,12 @@ import java.io.File;
 @SuppressWarnings("Since15")
 public class JDK9Platform implements IPlatform {
 
+    private static final Logger  logger  = Logger.get( JDK9Platform.class );
+    private static final Desktop desktop = Desktop.getDesktop();
+
     @Override
     public boolean installAppForegroundHandler(final Runnable handler) {
-        Desktop.getDesktop().addAppEventListener( new AppForegroundListener() {
+        desktop.addAppEventListener( new AppForegroundListener() {
             @Override
             public void appRaisedToForeground(final AppForegroundEvent e) {
                 handler.run();
@@ -28,7 +34,13 @@ public class JDK9Platform implements IPlatform {
 
     @Override
     public boolean installAppReopenHandler(final Runnable handler) {
-        Desktop.getDesktop().addAppEventListener( (AppReopenedListener) e -> handler.run() );
+        desktop.addAppEventListener( (AppReopenedListener) e -> handler.run() );
+        return true;
+    }
+
+    @Override
+    public boolean requestForeground() {
+        desktop.requestForeground( true );
         return true;
     }
 
@@ -37,7 +49,19 @@ public class JDK9Platform implements IPlatform {
         if (!file.exists())
             return false;
 
-        Desktop.getDesktop().browseFileDirectory( file );
+        desktop.browseFileDirectory( file );
         return true;
     }
+
+    @Override
+    public boolean open(final URI url) {
+        try {
+            desktop.browse( url );
+            return true;
+        }
+        catch (final IOException e) {
+            logger.err( e, "While opening: %s", url );
+            return false;
+        }
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/FilesPanel.java

@@ -9,8 +9,6 @@ import com.lyndir.masterpassword.model.MPUser;
 import com.lyndir.masterpassword.model.impl.MPFileUser;
 import com.lyndir.masterpassword.model.impl.MPFileUserManager;
 import java.awt.*;
-import java.util.Collection;
-import java.util.concurrent.CopyOnWriteArraySet;
 import javax.annotation.Nullable;
 import javax.swing.*;
 
@@ -25,9 +23,7 @@ public class FilesPanel extends JPanel implements MPFileUserManager.Listener, Ma
                                                             "Click to change the user's avatar." );
 
     private final CollectionListModel<MPUser<?>> usersModel =
-            CollectionListModel.<MPUser<?>>copy( MPFileUserManager.get().getFiles() ).selection( MasterPassword.get()::activateUser );
+            new CollectionListModel<MPUser<?>>( MPFileUserManager.get().getFiles() ).selection( MasterPassword.get()::activateUser );
-    private final JComboBox<? extends MPUser<?>> userField  =
-            Components.comboBox( usersModel, user -> ifNotNull( user, MPUser::getFullName ) );
 
     protected FilesPanel() {
         setOpaque( false );
@@ -46,7 +42,7 @@ public class FilesPanel extends JPanel implements MPFileUserManager.Listener, Ma
         add( Components.strut( Components.margin() ) );
 
         // User Selection
-        add( userField );
+        add( Components.comboBox( usersModel, user -> ifNotNull( user, MPUser::getFullName ) ) );
 
         MPFileUserManager.get().addListener( this );
         MasterPassword.get().addListener( this );

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/MasterPasswordFrame.java

@@ -3,12 +3,10 @@ package com.lyndir.masterpassword.gui.view;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.gui.util.Components;
 import com.lyndir.masterpassword.gui.util.Res;
-import com.lyndir.masterpassword.model.MPUser;
 import com.lyndir.masterpassword.model.impl.MPFileUserManager;
 import java.awt.*;
 import java.awt.event.ComponentAdapter;
 import java.awt.event.ComponentEvent;
-import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.border.BevelBorder;
 
@@ -21,26 +19,24 @@ public class MasterPasswordFrame extends JFrame {
 
     private static final Logger logger = Logger.get( MasterPasswordFrame.class );
 
-    @SuppressWarnings("FieldCanBeLocal")
+    private final UserContentPanel         userContent;
-    private final Components.GradientPanel root        = Components.borderPanel( Res.colors().frameBg(), BoxLayout.PAGE_AXIS );
-    private final FilesPanel               filesPanel  = new FilesPanel();
-    private final JPanel                   userPanel   = Components.panel( new BorderLayout( 0, 0 ) );
-    private final UserContentPanel         userContent = new UserContentPanel();
 
     @SuppressWarnings("MagicNumber")
     public MasterPasswordFrame() {
         super( "Master Password" );
 
-        setContentPane( root );
+        JPanel root, userPanel;
-        root.add( filesPanel );
+        setContentPane( root = Components.borderPanel( Res.colors().frameBg(), BoxLayout.PAGE_AXIS ) );
-        root.add( Components.strut() );
+
-        root.add( userPanel );
+        root.add( new FilesPanel() );
+        root.add( Components.strut() );
+        root.add( userPanel = Components.panel( new BorderLayout( 0, 0 ) ) );
 
-        userPanel.add( userContent.getUserToolbar(), BorderLayout.LINE_START );
-        userPanel.add( userContent.getSiteToolbar(), BorderLayout.LINE_END );
         userPanel.add( Components.borderPanel(
                 BorderFactory.createBevelBorder( BevelBorder.RAISED, Res.colors().controlBorder(), Res.colors().frameBg() ),
-                Res.colors().controlBg(), BoxLayout.PAGE_AXIS, userContent ), BorderLayout.CENTER );
+                Res.colors().controlBg(), BoxLayout.PAGE_AXIS, userContent = new UserContentPanel() ), BorderLayout.CENTER );
+        userPanel.add( userContent.getUserToolbar(), BorderLayout.LINE_START );
+        userPanel.add( userContent.getSiteToolbar(), BorderLayout.LINE_END );
 
         addComponentListener( new ComponentHandler() );
         setPreferredSize( new Dimension( 800, 560 ) );

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/UserContentPanel.java

@@ -8,13 +8,14 @@ import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ObjectUtils;
 import com.lyndir.masterpassword.*;
+import com.lyndir.masterpassword.gui.MPGuiConstants;
 import com.lyndir.masterpassword.gui.MasterPassword;
-import com.lyndir.masterpassword.gui.model.MPIncognitoUser;
+import com.lyndir.masterpassword.gui.model.*;
-import com.lyndir.masterpassword.gui.model.MPNewSite;
 import com.lyndir.masterpassword.gui.util.*;
 import com.lyndir.masterpassword.gui.util.Platform;
 import com.lyndir.masterpassword.model.*;
 import com.lyndir.masterpassword.model.impl.*;
+import com.lyndir.masterpassword.util.Utilities;
 import java.awt.*;
 import java.awt.datatransfer.StringSelection;
 import java.awt.datatransfer.Transferable;
@@ -33,6 +34,7 @@ import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
+import javax.swing.text.PlainDocument;
 
 
 /**
@@ -41,14 +43,18 @@ import javax.swing.event.DocumentListener;
 @SuppressWarnings("SerializableStoresNonSerializable")
 public class UserContentPanel extends JPanel implements MasterPassword.Listener, MPUser.Listener {
 
-    private static final Random  random     = new Random();
+    private static final Random    random             = new Random();
-    private static final Logger  logger     = Logger.get( UserContentPanel.class );
+    private static final int       SIZE_RESULT        = 48;
-    private static final JButton iconButton = Components.button( Res.icons().user(), null, null );
+    private static final Logger    logger             = Logger.get( UserContentPanel.class );
+    private static final JButton   iconButton         = Components.button( Res.icons().user(), null, null );
+    private static final KeyStroke copyLoginKeyStroke = KeyStroke.getKeyStroke( KeyEvent.VK_ENTER, InputEvent.SHIFT_DOWN_MASK );
 
     private final JButton addButton    = Components.button( Res.icons().add(), event -> addUser(),
                                                             "Add a new user to Master Password." );
     private final JButton importButton = Components.button( Res.icons().import_(), event -> importUser(),
                                                             "Import a user from a backup file into Master Password." );
+    private final JButton helpButton   = Components.button( Res.icons().help(), event -> showHelp(),
+                                                            "Show information on how to use Master Password." );
 
     private final JPanel userToolbar = Components.panel( BoxLayout.PAGE_AXIS );
     private final JPanel siteToolbar = Components.panel( BoxLayout.PAGE_AXIS );
@@ -128,7 +134,7 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
     }
 
     private void addUser() {
-        JTextField nameField = Components.textField( "Robert Lee Mitchell", null );
+        JTextField nameField      = Components.textField( "Robert Lee Mitchell", null );
         JCheckBox  incognitoField = Components.checkBox( "<html>Incognito <em>(Do not save this user to disk)</em></html>" );
         if (JOptionPane.OK_OPTION != Components.showDialog( this, "Add User", new JOptionPane( Components.panel(
                 BoxLayout.PAGE_AXIS,
@@ -208,7 +214,7 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                     this, strf( "<html>Couldn't read import file:<br><pre>%s</pre></html>.", e.getLocalizedMessage() ),
                     "Import Failed", JOptionPane.ERROR_MESSAGE );
         }
-        catch (MPMarshalException e) {
+        catch (final MPMarshalException e) {
             logger.err( e, "While parsing user import file." );
             JOptionPane.showMessageDialog(
                     this, strf( "<html>Couldn't parse import file:<br><pre>%s</pre></html>.", e.getLocalizedMessage() ),
@@ -216,6 +222,32 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         }
     }
 
+    private void showHelp() {
+        JOptionPane.showMessageDialog( this, Components.linkLabel( strf(
+                "<h1>Master Password - v%s</h1>"
+                + "<p>The primary goal of this application is to provide a reliable security solution that also "
+                + "makes you independent from your computer.  If you lose access to this computer or your data, "
+                + "the application can regenerate all your secrets from scratch on any new device.</p>"
+                + "<h2>Opening Master Password</h2>"
+                + "<p>To use Master Password, simply open the application on your computer. "
+                + "Once running, you can bring up the user interface at any time by pressing the keys "
+                + "<strong><code>%s+%s</code></strong>."
+                + "<h2>Persistence</h2>"
+                + "<p>Though at the core, Master Password does not require the use of any form of data "
+                + "storage, the application does remember the names of the sites you've used in the past to "
+                + "make it easier for you to use them again in the future.  All user information is saved in "
+                + "files on your computer at the following location:<br><pre>%s</pre></p>"
+                + "<p>You can read, modify, backup or place new files in this location as you see fit. "
+                + "Some people even configure this location to be synced between their different computers "
+                + "using services such as those provided by SpiderOak or Dropbox.</p>"
+                + "<hr><p><a href='https://masterpassword.app'>https://masterpassword.app</a> — by Maarten Billemont</p>",
+                MasterPassword.get().version(),
+                InputEvent.getModifiersExText( MPGuiConstants.ui_hotkey.getModifiers() ),
+                KeyEvent.getKeyText( MPGuiConstants.ui_hotkey.getKeyCode() ),
+                MPFileUserManager.get().getPath().getAbsolutePath() ) ),
+                                       "About Master Password", JOptionPane.INFORMATION_MESSAGE );
+    }
+
     private enum ContentMode {
         NO_USER,
         AUTHENTICATE,
@@ -239,6 +271,8 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
 
             userToolbar.add( addButton );
             userToolbar.add( importButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             add( Box.createGlue() );
             add( Components.heading( "Select a user to proceed." ) );
@@ -259,9 +293,9 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         private final JButton resetButton  = Components.button( Res.icons().reset(), event -> resetUser(),
                                                                 "Change the master password for this user." );
 
-        private final JPasswordField masterPasswordField = Components.passwordField();
+        private final JPasswordField masterPasswordField;
-        private final JLabel         errorLabel          = Components.label();
+        private final JLabel         errorLabel;
-        private final JLabel         identiconLabel      = Components.label( SwingConstants.CENTER );
+        private final JLabel         identiconLabel;
 
         private Future<?> identiconJob;
 
@@ -275,20 +309,22 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
             userToolbar.add( exportButton );
             userToolbar.add( deleteButton );
             userToolbar.add( resetButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             add( Components.heading( user.getFullName(), SwingConstants.CENTER ) );
             add( Components.strut() );
 
-            add( identiconLabel );
+            add( identiconLabel = Components.label( SwingConstants.CENTER ) );
             identiconLabel.setFont( Res.fonts().emoticonsFont( Components.TEXT_SIZE_CONTROL ) );
             add( Box.createGlue() );
 
             add( Components.label( "Master Password:" ) );
             add( Components.strut() );
-            add( masterPasswordField );
+            add( masterPasswordField = Components.passwordField() );
             masterPasswordField.addActionListener( this );
             masterPasswordField.getDocument().addDocumentListener( this );
-            add( errorLabel );
+            add( errorLabel = Components.label() );
             errorLabel.setForeground( Res.colors().errorFg() );
             add( Box.createGlue() );
         }
@@ -427,29 +463,31 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
 
     private final class AuthenticatedUserPanel extends JPanel implements KeyListener, MPUser.Listener {
 
-        public static final int SIZE_RESULT = 48;
-
         private final JButton userButton      = Components.button( Res.icons().user(), event -> showUserPreferences(),
                                                                    "Show user preferences." );
         private final JButton logoutButton    = Components.button( Res.icons().lock(), event -> logoutUser(),
                                                                    "Sign out and lock user." );
         private final JButton settingsButton  = Components.button( Res.icons().settings(), event -> showSiteSettings(),
                                                                    "Show site settings." );
-        private final JButton questionsButton = Components.button( Res.icons().question(), null,
+        private final JButton questionsButton = Components.button( Res.icons().question(), event -> showSiteQuestions(),
                                                                    "Show site recovery questions." );
+        private final JButton editButton      = Components.button( Res.icons().edit(), event -> showSiteValues(),
+                                                                   "Set/save personal password/login." );
+        private final JButton keyButton       = Components.button( Res.icons().key(), event -> showSiteKeys(),
+                                                                   "Cryptographic site keys." );
         private final JButton deleteButton    = Components.button( Res.icons().delete(), event -> deleteSite(),
                                                                    "Delete the site from the user." );
 
         @Nonnull
         private final MPUser<?>                      user;
-        private final JLabel                         passwordLabel = Components.label( SwingConstants.CENTER );
+        private final JLabel                         passwordLabel;
-        private final JLabel                         passwordField = Components.heading( SwingConstants.CENTER );
+        private final JLabel                         passwordField;
-        private final JLabel                         queryLabel    = Components.label();
+        private final JLabel                         answerLabel;
-        private final JTextField                     queryField    = Components.textField( null, this::updateSites );
+        private final JLabel                         answerField;
-        private final CollectionListModel<MPSite<?>> sitesModel    =
+        private final JLabel                         queryLabel;
-                new CollectionListModel<MPSite<?>>().selection( this::showSiteResult );
+        private final JTextField                     queryField;
-        private final JList<MPSite<?>>               sitesList     =
+        private final CollectionListModel<MPSite<?>> sitesModel;
-                Components.list( sitesModel, this::getSiteDescription );
+        private final JList<MPSite<?>>               sitesList;
 
         private Future<?> updateSitesJob;
 
@@ -461,33 +499,54 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
             userToolbar.add( addButton );
             userToolbar.add( userButton );
             userToolbar.add( logoutButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             siteToolbar.add( settingsButton );
             siteToolbar.add( questionsButton );
+            siteToolbar.add( editButton );
+            siteToolbar.add( keyButton );
             siteToolbar.add( deleteButton );
             settingsButton.setEnabled( false );
+            questionsButton.setEnabled( false );
+            editButton.setEnabled( false );
+            keyButton.setEnabled( false );
             deleteButton.setEnabled( false );
 
+            answerLabel = Components.label( "Answer:" );
+            answerField = Components.heading( SwingConstants.CENTER );
+            answerField.setForeground( Res.colors().highlightFg() );
+            answerField.setFont( Res.fonts().bigValueFont( SIZE_RESULT ) );
+
             add( Components.heading( user.getFullName(), SwingConstants.CENTER ) );
 
-            add( passwordLabel );
+            add( passwordLabel = Components.label( SwingConstants.CENTER ) );
-            add( passwordField );
+            add( passwordField = Components.heading( SwingConstants.CENTER ) );
             passwordField.setForeground( Res.colors().highlightFg() );
             passwordField.setFont( Res.fonts().bigValueFont( SIZE_RESULT ) );
             add( Box.createGlue() );
             add( Components.strut() );
 
-            add( queryLabel );
+            add( queryLabel = Components.label() );
             queryLabel.setText( strf( "%s's password for:", user.getFullName() ) );
-            add( queryField );
+            add( queryField = Components.textField( null, this::updateSites ) );
             queryField.putClientProperty( "JTextField.variant", "search" );
-            queryField.addActionListener( event -> useSite() );
+            queryField.addActionListener( this::useSite );
+            queryField.getInputMap().put( copyLoginKeyStroke, JTextField.notifyAction );
             queryField.addKeyListener( this );
             queryField.requestFocusInWindow();
             add( Components.strut() );
-            add( Components.scrollPane( sitesList ) );
+
-            sitesModel.registerList( sitesList );
+            add( Components.scrollPane( sitesList = Components.list(
-            add( Box.createGlue() );
+                    sitesModel = new CollectionListModel<MPSite<?>>().selection( this::showSiteResult ),
+                    this::getSiteDescription ) ) );
+            add( Components.strut() );
+
+            add( Components.label( strf(
+                    "Press %s to copy password, %s+%s to copy login name.",
+                    KeyEvent.getKeyText( KeyEvent.VK_ENTER ),
+                    InputEvent.getModifiersExText( copyLoginKeyStroke.getModifiers() ),
+                    KeyEvent.getKeyText( copyLoginKeyStroke.getKeyCode() ) ) ) );
 
             addHierarchyListener( e -> {
                 if (null != SwingUtilities.windowForComponent( this ))
@@ -537,12 +596,14 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                             Components.strut() );
 
             components.add( Components.label( "Password Type:" ),
-                            Components.comboBox( MPResultType.values(), MPResultType::getLongName,
+                            Components.comboBox( MPResultType.values(), type -> getTypeDescription(
+                                    type, user.getDefaultType(), user.getAlgorithm().mpw_default_result_type() ),
                                                  site.getResultType(), site::setResultType ),
                             Components.strut() );
 
             components.add( Components.label( "Login Type:" ),
-                            Components.comboBox( MPResultType.values(), MPResultType::getLongName,
+                            Components.comboBox( MPResultType.values(), type -> getTypeDescription(
+                                    type, user.getAlgorithm().mpw_default_login_type() ),
                                                  site.getLoginType(), site::setLoginType ),
                             Components.strut() );
 
@@ -552,10 +613,179 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                                 Components.textField( fileSite.getUrl(), fileSite::setUrl ),
                                 Components.strut() );
 
-            Components.showDialog( this, site.getSiteName(), new JOptionPane( Components.panel(
+            Components.showDialog( this, strf( "Settings for %s", site.getSiteName() ), new JOptionPane( Components.panel(
                     BoxLayout.PAGE_AXIS, components.build().toArray( new Component[0] ) ) ) );
         }
 
+        private String getTypeDescription(final MPResultType type, final MPResultType... defaults) {
+            boolean isDefault = false;
+            for (final MPResultType d : defaults)
+                if (isDefault = type == d)
+                    break;
+
+            return strf( "<html>%s%s%s, %s", isDefault? "<b>": "", type.getLongName(), isDefault? "</b>": "", type.getDescription() );
+        }
+
+        public void showSiteQuestions() {
+            MPSite<?> site = sitesModel.getSelectedItem();
+            if (site == null)
+                return;
+
+            CollectionListModel<MPQuestion> questionsModel = new CollectionListModel<MPQuestion>().selection( this::showQuestionResult );
+            JList<MPQuestion> questionsList = Components.list(
+                    questionsModel, question -> Strings.isNullOrEmpty( question.getKeyword() )? "<site>": question.getKeyword() );
+            JTextField queryField = Components.textField( null, query -> Res.job( () -> {
+                Collection<MPQuestion> questions = new LinkedList<>( site.findQuestions( query ) );
+                if (questions.stream().noneMatch( question -> question.getKeyword().equalsIgnoreCase( query ) ))
+                    questions.add( new MPNewQuestion( site, Utilities.ifNotNullElse( query, "" ) ) );
+
+                Res.ui( () -> questionsModel.set( questions ) );
+            } ) );
+            queryField.putClientProperty( "JTextField.variant", "search" );
+            queryField.addActionListener( event -> useQuestion( questionsModel.getSelectedItem() ) );
+            queryField.addKeyListener( new KeyAdapter() {
+                @Override
+                public void keyPressed(final KeyEvent event) {
+                    if ((event.getKeyCode() == KeyEvent.VK_UP) || (event.getKeyCode() == KeyEvent.VK_DOWN))
+                        questionsList.dispatchEvent( event );
+                }
+
+                @Override
+                public void keyReleased(final KeyEvent event) {
+                    if ((event.getKeyCode() == KeyEvent.VK_UP) || (event.getKeyCode() == KeyEvent.VK_DOWN))
+                        questionsList.dispatchEvent( event );
+                }
+            } );
+
+            Components.showDialog( this, strf( "Recovery answers for %s", site.getSiteName() ), new JOptionPane( Components.panel(
+                    BoxLayout.PAGE_AXIS,
+                    Components.label( "Security Question Keyword:" ), queryField,
+                    Components.strut(),
+                    answerLabel, answerField,
+                    Components.strut(),
+                    Components.scrollPane( questionsList ) ) ) {
+                @Override
+                public void selectInitialValue() {
+                    queryField.requestFocusInWindow();
+                }
+            } );
+        }
+
+        public void showSiteValues() {
+            MPSite<?> site = sitesModel.getSelectedItem();
+            if (site == null)
+                return;
+
+            try {
+                JTextField passwordField = Components.textField( site.getResult(), null );
+                JTextField loginField    = Components.textField( site.getLogin(), null );
+                passwordField.setEditable( site.getResultType().getTypeClass() == MPResultTypeClass.Stateful );
+                loginField.setEditable( site.getLoginType().getTypeClass() == MPResultTypeClass.Stateful );
+
+                if (JOptionPane.OK_OPTION == Components.showDialog( this, site.getSiteName(), new JOptionPane(
+                        Components.panel(
+                                BoxLayout.PAGE_AXIS,
+                                Components.label( strf( "<html>Site Login (currently set to: <b>%s</b>):",
+                                                        getTypeDescription( site.getLoginType() ) ) ),
+                                loginField,
+                                Components.strut(),
+                                Components.label( strf( "<html>Site Password (currently set to: <b>%s</b>):",
+                                                        getTypeDescription( site.getResultType() ) ) ),
+                                passwordField,
+                                Components.strut(),
+                                Components.label( "<html>To save a personal value in these fields,\n" +
+                                                  "change the type to <b>Saved</b> in the site's settings." ) ),
+                        JOptionPane.PLAIN_MESSAGE, JOptionPane.OK_CANCEL_OPTION ) {
+                    @Override
+                    public void selectInitialValue() {
+                        passwordField.requestFocusInWindow();
+                    }
+                } )) {
+                    if (site instanceof MPFileSite) {
+                        MPFileSite fileSite = (MPFileSite) site;
+
+                        if (site.getResultType().getTypeClass() == MPResultTypeClass.Stateful)
+                            fileSite.setSitePassword( site.getResultType(), passwordField.getText() );
+                        if (site.getLoginType().getTypeClass() == MPResultTypeClass.Stateful)
+                            fileSite.setLoginName( site.getLoginType(), loginField.getText() );
+                    }
+                }
+            }
+            catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                logger.err( e, "While computing site edit results." );
+            }
+        }
+
+        public void showSiteKeys() {
+            MPSite<?> site = sitesModel.getSelectedItem();
+            if (site == null)
+                return;
+
+            JTextArea resultField = Components.textArea();
+            resultField.setEnabled( false );
+
+            CollectionListModel<MPKeyPurpose> purposeModel = new CollectionListModel<>( MPKeyPurpose.values() );
+            DocumentModel                     contextModel = new DocumentModel( new PlainDocument() );
+            UnsignedIntegerModel              counterModel = new UnsignedIntegerModel( UnsignedInteger.ONE );
+            CollectionListModel<MPResultType> typeModel    = new CollectionListModel<>( MPResultType.values() );
+            DocumentModel                     stateModel   = new DocumentModel( new PlainDocument() );
+
+            Runnable trigger = () -> Res.job( () -> {
+                try {
+                    MPKeyPurpose purpose = purposeModel.getSelectedItem();
+                    MPResultType type    = typeModel.getSelectedItem();
+
+                    String result = ((purpose == null) || (type == null))? null:
+                            site.getResult( purpose, contextModel.getText(), counterModel.getNumber(), type, stateModel.getText() );
+
+                    Res.ui( () -> resultField.setText( result ) );
+                }
+                catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                    logger.err( e, "While computing site edit results." );
+                }
+            } );
+
+            purposeModel.selection( MPKeyPurpose.Authentication, p -> trigger.run() );
+            contextModel.selection( c -> trigger.run() );
+            counterModel.selection( c -> trigger.run() );
+            typeModel.selection( MPResultType.DeriveKey, t -> {
+                switch (t) {
+                    case DeriveKey:
+                        stateModel.setText( Integer.toString( site.getAlgorithm().mpw_keySize_min() ) );
+                        break;
+
+                    default:
+                        stateModel.setText( null );
+                }
+
+                trigger.run();
+            } );
+            stateModel.selection( c -> trigger.run() );
+
+            if (JOptionPane.OK_OPTION == Components.showDialog( this, site.getSiteName(), new JOptionPane( Components.panel(
+                    BoxLayout.PAGE_AXIS,
+                    Components.heading( "Key Calculator" ),
+                    Components.label( "Purpose:" ),
+                    Components.comboBox( purposeModel, MPKeyPurpose::getShortName ),
+                    Components.strut(),
+                    Components.label( "Context:" ),
+                    Components.textField( contextModel.getDocument() ),
+                    Components.label( "Counter:" ),
+                    Components.spinner( counterModel ),
+                    Components.label( "Type:" ),
+                    Components.comboBox( typeModel, this::getTypeDescription ),
+                    Components.label( "State:" ),
+                    Components.scrollPane( Components.textField( stateModel.getDocument() ) ),
+                    Components.strut(),
+                    resultField ) ) {
+                {
+                    setOptions( new Object[]{ "Copy", "Cancel" } );
+                    setInitialValue( getOptions()[0] );
+                }
+            } ))
+                copyResult( resultField.getText() );
+        }
+
         public void deleteSite() {
             MPSite<?> site = sitesModel.getSelectedItem();
             if (site == null)
@@ -591,69 +821,121 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                          Joiner.on( " - " ).skipNulls().join( parameters.build() ) );
         }
 
-        private void useSite() {
+        private void useSite(final ActionEvent event) {
             MPSite<?> site = sitesModel.getSelectedItem();
             if (site instanceof MPNewSite) {
                 if (JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(
                         this, strf( "<html>Remember the site <strong>%s</strong>?</html>", site.getSiteName() ),
                         "New Site", JOptionPane.YES_NO_OPTION )) {
                     sitesModel.setSelectedItem( user.addSite( site.getSiteName() ) );
-                    useSite();
+                    useSite( event );
                 }
                 return;
             }
 
-            showSiteResult( site, result -> {
+            boolean loginResult = (copyLoginKeyStroke.getModifiers() & event.getModifiers()) != 0;
+            showSiteResult( site, loginResult, result -> {
                 if (result == null)
                     return;
 
                 if (site instanceof MPFileSite)
                     ((MPFileSite) site).use();
 
-                Transferable clipboardContents = new StringSelection( result );
+                copyResult( result );
-                Toolkit.getDefaultToolkit().getSystemClipboard().setContents( clipboardContents, null );
-
-                Res.ui( () -> {
-                    Window window = SwingUtilities.windowForComponent( UserContentPanel.this );
-                    if (window != null)
-                        window.dispatchEvent( new WindowEvent( window, WindowEvent.WINDOW_CLOSING ) );
-                } );
             } );
         }
 
         private void showSiteResult(@Nullable final MPSite<?> site) {
-            showSiteResult( site, null );
+            showSiteResult( site, false, result -> {
+            } );
         }
 
-        private void showSiteResult(@Nullable final MPSite<?> site, @Nullable final Consumer<String> resultCallback) {
+        private void showSiteResult(@Nullable final MPSite<?> site, final boolean loginResult, final Consumer<String> resultCallback) {
-            if (site == null) {
-                if (resultCallback != null)
-                    resultCallback.accept( null );
-                Res.ui( () -> {
-                    passwordLabel.setText( " " );
-                    passwordField.setText( " " );
-                    settingsButton.setEnabled( false );
-                    deleteButton.setEnabled( false );
-                } );
-                return;
-            }
-
             Res.job( () -> {
                 try {
-                    String result = site.getResult();
+                    if (site != null)
-                    if (resultCallback != null)
+                        return loginResult? site.getLogin(): site.getResult();
-                        resultCallback.accept( result );
-
-                    Res.ui( () -> {
-                        passwordLabel.setText( strf( "Your password for %s:", site.getSiteName() ) );
-                        passwordField.setText( result );
-                        settingsButton.setEnabled( true );
-                        deleteButton.setEnabled( true );
-                    } );
                 }
                 catch (final MPKeyUnavailableException | MPAlgorithmException e) {
                     logger.err( e, "While resolving password for: %s", site );
                 }
+
+                return null;
+            }, resultCallback.andThen( result -> Res.ui( () -> {
+                passwordLabel.setText( ((result != null) && (site != null))? strf( "Your password for %s:", site.getSiteName() ): " " );
+                passwordField.setText( (result != null)? result: " " );
+                settingsButton.setEnabled( result != null );
+                questionsButton.setEnabled( result != null );
+                editButton.setEnabled( result != null );
+                keyButton.setEnabled( result != null );
+                deleteButton.setEnabled( result != null );
+            } ) ) );
+        }
+
+        private void useQuestion(@Nullable final MPQuestion question) {
+            if (question instanceof MPNewQuestion) {
+                if (JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(
+                        this,
+                        strf( "<html>Remember the security question with keyword <strong>%s</strong>?</html>",
+                              Strings.isNullOrEmpty( question.getKeyword() )? "<empty>": question.getKeyword() ),
+                        "New Question", JOptionPane.YES_NO_OPTION )) {
+                    useQuestion( question.getSite().addQuestion( question.getKeyword() ) );
+                }
+                return;
+            }
+
+            showQuestionResult( question, result -> {
+                if (result == null)
+                    return;
+
+                if (question instanceof MPFileQuestion)
+                    ((MPFileQuestion) question).use();
+
+                copyResult( result );
+            } );
+        }
+
+        private void showQuestionResult(@Nullable final MPQuestion question) {
+            showQuestionResult( question, answer -> {
+            } );
+        }
+
+        private void showQuestionResult(@Nullable final MPQuestion question, final Consumer<String> resultCallback) {
+            Res.job( () -> {
+                try {
+                    if (question != null)
+                        return question.getAnswer();
+                }
+                catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                    logger.err( e, "While resolving answer for: %s", question );
+                }
+
+                return null;
+            }, resultCallback.andThen( answer -> Res.ui( () -> {
+                if ((answer == null) || (question == null))
+                    answerLabel.setText( " " );
+                else
+                    answerLabel.setText(
+                            Strings.isNullOrEmpty( question.getKeyword() )?
+                                    strf( "<html>Answer for site <b>%s</b>:", question.getSite().getSiteName() ):
+                                    strf( "<html>Answer for site <b>%s</b>, of question with keyword <b>%s</b>:",
+                                          question.getSite().getSiteName(), question.getKeyword() ) );
+                answerField.setText( (answer != null)? answer: " " );
+            } ) ) );
+        }
+
+        private void copyResult(final String result) {
+            Transferable clipboardContents = new StringSelection( result );
+            Toolkit.getDefaultToolkit().getSystemClipboard().setContents( clipboardContents, null );
+
+            Res.ui( () -> {
+                Window answerDialog = SwingUtilities.windowForComponent( answerField );
+                if (answerDialog instanceof Dialog)
+                    answerDialog.setVisible( false );
+
+                Window window = SwingUtilities.windowForComponent( UserContentPanel.this );
+                if (window instanceof Frame)
+                    ((Frame) window).setExtendedState( Frame.ICONIFIED );
             } );
         }
 
@@ -678,13 +960,11 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                 updateSitesJob.cancel( true );
 
             updateSitesJob = Res.job( () -> {
-                Collection<MPSite<?>> sites = new LinkedList<>();
+                Collection<MPSite<?>> sites = new LinkedList<>( user.findSites( query ) );
-                if (!Strings.isNullOrEmpty( query )) {
-                    sites.addAll( new LinkedList<>( user.findSites( query ) ) );
 
+                if (!Strings.isNullOrEmpty( query ))
                     if (sites.stream().noneMatch( site -> site.getSiteName().equalsIgnoreCase( query ) ))
                         sites.add( new MPNewSite( user, query ) );
-                }
 
                 Res.ui( () -> sitesModel.set( sites ) );
             } );

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPModelConstants.java

@@ -25,14 +25,15 @@ import org.joda.time.format.ISODateTimeFormat;
 /**
  * @author lhunath, 2016-10-29
  */
-public final class MPConstants {
+public final class MPModelConstants {
 
     /* Environment */
 
     /**
      * mpw: default path to look for run configuration files if the platform default is not desired.
      */
-    public static final String env_rcDir        = "MPW_RCDIR";
+    public static final String env_rcDir = "MPW_RCDIR";
+
     /**
      * mpw: permit automatic update checks.
      */

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPQuestion.java

@@ -40,6 +40,13 @@ public interface MPQuestion extends Comparable<MPQuestion> {
 
     void setType(MPResultType type);
 
+    @Nonnull
+    default String getAnswer()
+            throws MPKeyUnavailableException, MPAlgorithmException {
+
+        return getAnswer( null );
+    }
+
     @Nonnull
     String getAnswer(@Nullable String state)
             throws MPKeyUnavailableException, MPAlgorithmException;

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPSite.java

@@ -18,6 +18,7 @@
 
 package com.lyndir.masterpassword.model;
 
+import com.google.common.collect.ImmutableCollection;
 import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.masterpassword.*;
 import java.util.Collection;
@@ -57,28 +58,38 @@ public interface MPSite<Q extends MPQuestion> extends Comparable<MPSite<?>> {
 
     void setLoginType(@Nullable MPResultType loginType);
 
+    @Nullable
     default String getResult()
             throws MPKeyUnavailableException, MPAlgorithmException {
-
         return getResult( MPKeyPurpose.Authentication );
     }
 
-    @Nonnull
+    @Nullable
     default String getResult(final MPKeyPurpose keyPurpose)
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getResult( keyPurpose, null );
     }
 
-    @Nonnull
+    @Nullable
     default String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getResult( keyPurpose, keyContext, null );
     }
 
-    @Nonnull
+    @Nullable
     String getResult(MPKeyPurpose keyPurpose, @Nullable String keyContext, @Nullable String state)
             throws MPKeyUnavailableException, MPAlgorithmException;
 
+    @Nullable
+    String getResult(MPKeyPurpose keyPurpose, @Nullable String keyContext,
+                     @Nullable UnsignedInteger counter, MPResultType type, @Nullable String state)
+            throws MPKeyUnavailableException, MPAlgorithmException;
+
+    @Nonnull
+    String getState(MPKeyPurpose keyPurpose, @Nullable String keyContext,
+                    @Nullable UnsignedInteger counter, MPResultType type, String state)
+            throws MPKeyUnavailableException, MPAlgorithmException;
+
     @Nonnull
     default String getLogin()
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -94,10 +105,17 @@ public interface MPSite<Q extends MPQuestion> extends Comparable<MPSite<?>> {
     @Nonnull
     MPUser<?> getUser();
 
-    boolean addQuestion(Q question);
+    @Nonnull
+    Q addQuestion(String keyword);
+
+    @Nonnull
+    Q addQuestion(Q question);
 
     boolean deleteQuestion(Q question);
 
     @Nonnull
     Collection<Q> getQuestions();
+
+    @Nonnull
+    ImmutableCollection<Q> findQuestions(@Nullable String query);
 }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPUser.java

@@ -100,6 +100,7 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
 
     // - Relations
 
+    @Nonnull
     S addSite(String siteName);
 
     @Nonnull
@@ -113,9 +114,9 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
     @Nonnull
     ImmutableCollection<S> findSites(@Nullable String query);
 
-    boolean addListener(Listener listener);
+    void addListener(Listener listener);
 
-    boolean removeListener(Listener listener);
+    void removeListener(Listener listener);
 
     interface Listener {
 

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicQuestion.java

@@ -22,6 +22,7 @@ import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
 import com.lyndir.masterpassword.*;
 import com.lyndir.masterpassword.model.MPQuestion;
+import com.lyndir.masterpassword.model.MPSite;
 import java.util.Objects;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -33,14 +34,23 @@ import org.jetbrains.annotations.NotNull;
  */
 public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
 
-    private final String       keyword;
+    private final MPSite<?> site;
-    private       MPResultType type;
+    private final String    keyword;
 
-    protected MPBasicQuestion(final String keyword, final MPResultType type) {
+    private MPResultType type;
+
+    protected MPBasicQuestion(final MPSite<?> site, final String keyword, final MPResultType type) {
+        this.site = site;
         this.keyword = keyword;
         this.type = type;
     }
 
+    @Nonnull
+    @Override
+    public MPSite<?> getSite() {
+        return site;
+    }
+
     @Nonnull
     @Override
     public String getKeyword() {
@@ -55,7 +65,7 @@ public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
 
     @Override
     public void setType(final MPResultType type) {
-        if (Objects.equals(this.type, type))
+        if (this.type == type)
             return;
 
         this.type = type;
@@ -70,15 +80,12 @@ public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
         return getSite().getResult( MPKeyPurpose.Recovery, getKeyword(), null, getType(), state );
     }
 
-    @Nonnull
-    @Override
-    public abstract MPBasicSite<?, ?> getSite();
-
     @Override
     protected void onChanged() {
         super.onChanged();
 
-        getSite().setChanged();
+        if (site instanceof Changeable)
+            ((Changeable) site).setChanged();
     }
 
     @Override

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicSite.java

@@ -21,6 +21,9 @@ package com.lyndir.masterpassword.model.impl;
 import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
+import com.google.common.base.Strings;
+import com.google.common.collect.ImmutableCollection;
+import com.google.common.collect.ImmutableSortedSet;
 import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.masterpassword.*;
 import com.lyndir.masterpassword.model.*;
@@ -35,9 +38,9 @@ import javax.annotation.Nullable;
 public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> extends Changeable
         implements MPSite<Q> {
 
-    private final Collection<Q> questions = new LinkedHashSet<>();
     private final U             user;
     private final String        siteName;
+    private final Collection<Q> questions = new LinkedHashSet<>();
 
     private MPAlgorithm     algorithm;
     private UnsignedInteger counter;
@@ -104,7 +107,7 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
 
     @Override
     public void setResultType(final MPResultType resultType) {
-        if (Objects.equals( this.resultType, resultType ))
+        if (this.resultType == resultType)
             return;
 
         this.resultType = resultType;
@@ -119,14 +122,14 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
 
     @Override
     public void setLoginType(@Nullable final MPResultType loginType) {
-        if (Objects.equals( this.loginType, loginType ))
+        if (this.loginType == loginType)
             return;
 
         this.loginType = ifNotNullElse( loginType, getAlgorithm().mpw_default_login_type() );
         setChanged();
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext, @Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -134,8 +137,10 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return getResult( keyPurpose, keyContext, getCounter(), getResultType(), state );
     }
 
-    protected String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+    @Nullable
-                               @Nullable final UnsignedInteger counter, final MPResultType type, @Nullable final String state)
+    @Override
+    public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+                            @Nullable final UnsignedInteger counter, final MPResultType type, @Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
         return getUser().getMasterKey().siteResult(
@@ -143,8 +148,10 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
                 keyPurpose, keyContext, type, state );
     }
 
-    protected String getState(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+    @Nonnull
-                              @Nullable final UnsignedInteger counter, final MPResultType type, final String state)
+    @Override
+    public String getState(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+                           @Nullable final UnsignedInteger counter, final MPResultType type, final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
         return getUser().getMasterKey().siteState(
@@ -160,13 +167,13 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return getResult( MPKeyPurpose.Identification, null, null, getLoginType(), state );
     }
 
+    @Nonnull
     @Override
-    public boolean addQuestion(final Q question) {
+    public Q addQuestion(final Q question) {
-        if (!questions.add( question ))
+        questions.add( question );
-            return false;
 
         setChanged();
-        return true;
+        return question;
     }
 
     @Override
@@ -184,6 +191,17 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return Collections.unmodifiableCollection( questions );
     }
 
+    @Nonnull
+    @Override
+    public ImmutableCollection<Q> findQuestions(@Nullable final String query) {
+        ImmutableSortedSet.Builder<Q> results = ImmutableSortedSet.naturalOrder();
+        for (final Q question : getQuestions())
+            if (Strings.isNullOrEmpty( query ) || question.getKeyword().startsWith( query ))
+                results.add( question );
+
+        return results.build();
+    }
+
     @Nonnull
     @Override
     public U getUser() {

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicUser.java

@@ -20,6 +20,7 @@ package com.lyndir.masterpassword.model.impl;
 
 import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
+import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableCollection;
 import com.google.common.collect.ImmutableSortedSet;
 import com.lyndir.lhunath.opal.system.CodeUtils;
@@ -202,22 +203,21 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
     @Override
     public ImmutableCollection<S> findSites(@Nullable final String query) {
         ImmutableSortedSet.Builder<S> results = ImmutableSortedSet.naturalOrder();
-        if (query != null)
+        for (final S site : getSites())
-            for (final S site : getSites())
+            if (Strings.isNullOrEmpty( query ) || site.getSiteName().startsWith( query ))
-                if (site.getSiteName().startsWith( query ))
+                results.add( site );
-                    results.add( site );
 
         return results.build();
     }
 
     @Override
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        listeners.add( listener );
     }
 
     @Override
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     @Override

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileQuestion.java

@@ -30,16 +30,13 @@ import javax.annotation.Nullable;
  */
 public class MPFileQuestion extends MPBasicQuestion {
 
-    private final MPFileSite site;
-
     @Nullable
     private String answerState;
 
     public MPFileQuestion(final MPFileSite site, final String keyword,
                           @Nullable final MPResultType type, @Nullable final String answerState) {
-        super( keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
+        super( site, keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
 
-        this.site = site;
         this.answerState = answerState;
     }
 
@@ -48,6 +45,8 @@ public class MPFileQuestion extends MPBasicQuestion {
         return answerState;
     }
 
+    @Nonnull
+    @Override
     public String getAnswer()
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getAnswer( answerState );
@@ -66,9 +65,8 @@ public class MPFileQuestion extends MPBasicQuestion {
         setChanged();
     }
 
-    @Nonnull
+    public void use() {
-    @Override
+        if (getSite() instanceof MPFileSite)
-    public MPFileSite getSite() {
+            ((MPFileSite) getSite()).use();
-        return site;
     }
 }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileSite.java

@@ -93,7 +93,7 @@ public class MPFileSite extends MPBasicSite<MPFileUser, MPFileQuestion> {
         setChanged();
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -145,6 +145,12 @@ public class MPFileSite extends MPBasicSite<MPFileUser, MPFileQuestion> {
         setChanged();
     }
 
+    @Nonnull
+    @Override
+    public MPFileQuestion addQuestion(final String keyword) {
+        return addQuestion( new MPFileQuestion( this, keyword, null, null ) );
+    }
+
     @Override
     public int compareTo(@Nonnull final MPSite<?> o) {
         int comparison = (o instanceof MPFileSite)? ((MPFileSite) o).getLastUsed().compareTo( getLastUsed() ): 0;

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUser.java

@@ -207,6 +207,7 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         super.reset();
     }
 
+    @Nonnull
     @Override
     public MPFileSite addSite(final String siteName) {
         return addSite( new MPFileSite( this, siteName ) );

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUserManager.java

@@ -22,7 +22,7 @@ import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 
 import com.google.common.collect.ImmutableSortedSet;
 import com.lyndir.lhunath.opal.system.logging.Logger;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import java.io.File;
 import java.io.IOException;
 import java.util.*;
@@ -42,7 +42,7 @@ public class MPFileUserManager {
     private static final MPFileUserManager instance;
 
     static {
-        String rcDir = System.getenv( MPConstants.env_rcDir );
+        String rcDir = System.getenv( MPModelConstants.env_rcDir );
 
         if (rcDir != null)
             instance = create( new File( rcDir ) );
@@ -66,6 +66,7 @@ public class MPFileUserManager {
 
     protected MPFileUserManager(final File path) {
         this.path = path;
+        reload();
     }
 
     public void reload() {
@@ -128,12 +129,13 @@ public class MPFileUserManager {
         return ImmutableSortedSet.copyOf( userByName.values() );
     }
 
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        if (listeners.add( listener ))
+            listener.onFilesUpdated( getFiles() );
     }
 
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     private void fireUpdated() {
@@ -141,7 +143,6 @@ public class MPFileUserManager {
             return;
 
         ImmutableSortedSet<MPFileUser> files = getFiles();
-
         for (final Listener listener : listeners)
             listener.onFilesUpdated( files );
     }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFlatMarshaller.java

@@ -25,7 +25,7 @@ import com.google.common.base.Charsets;
 import com.google.common.io.CharSink;
 import com.lyndir.masterpassword.MPAlgorithmException;
 import com.lyndir.masterpassword.MPKeyUnavailableException;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import java.io.*;
 import org.joda.time.Instant;
 
@@ -50,7 +50,7 @@ public class MPFlatMarshaller implements MPMarshaller {
         content.append( "# \n" );
         content.append( "##\n" );
         content.append( "# Format: " ).append( FORMAT ).append( '\n' );
-        content.append( "# Date: " ).append( MPConstants.dateTimeFormatter.print( new Instant() ) ).append( '\n' );
+        content.append( "# Date: " ).append( MPModelConstants.dateTimeFormatter.print( new Instant() ) ).append( '\n' );
         content.append( "# User Name: " ).append( user.getFullName() ).append( '\n' );
         content.append( "# Full Name: " ).append( user.getFullName() ).append( '\n' );
         content.append( "# Avatar: " ).append( user.getAvatar() ).append( '\n' );
@@ -72,7 +72,7 @@ public class MPFlatMarshaller implements MPMarshaller {
             }
 
             content.append( strf( "%s  %8d  %8s  %25s\t%25s\t%s\n", //
-                                  MPConstants.dateTimeFormatter.print( site.getLastUsed() ), // lastUsed
+                                  MPModelConstants.dateTimeFormatter.print( site.getLastUsed() ), // lastUsed
                                   site.getUses(), // uses
                                   strf( "%d:%d:%d", //
                                         site.getResultType().getType(), // type

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFlatUnmarshaller.java

@@ -25,7 +25,7 @@ import com.lyndir.lhunath.opal.system.CodeUtils;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ConversionUtils;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import com.lyndir.masterpassword.model.MPIncorrectMasterPasswordException;
 import java.io.*;
 import java.util.regex.Matcher;
@@ -157,7 +157,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                                                        MPResultType.forType( ConversionUtils.toIntegerNN( siteMatcher.group( 3 ) ) ),
                                                        clearContent? null: siteMatcher.group( 6 ),
                                                        null, null, null, ConversionUtils.toIntegerNN( siteMatcher.group( 2 ) ),
-                                                       MPConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
+                                                       MPModelConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
                                 if (clearContent)
                                     site.setSitePassword( site.getResultType(), siteMatcher.group( 6 ) );
                                 break;
@@ -171,7 +171,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                                                        clearContent? null: siteMatcher.group( 8 ),
                                                        MPResultType.GeneratedName, clearContent? null: siteMatcher.group( 6 ), null,
                                                        ConversionUtils.toIntegerNN( siteMatcher.group( 2 ) ),
-                                                       MPConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
+                                                       MPModelConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
                                 if (clearContent) {
                                     site.setSitePassword( site.getResultType(), siteMatcher.group( 8 ) );
                                     site.setLoginName( MPResultType.StoredPersonal, siteMatcher.group( 6 ) );

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPJSONFile.java

@@ -28,7 +28,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.lhunath.opal.system.CodeUtils;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import com.lyndir.masterpassword.model.MPIncorrectMasterPasswordException;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.File;
@@ -70,13 +70,13 @@ public class MPJSONFile extends MPJSONAnyObject {
         export = new Export();
         export.format = 1;
         export.redacted = modelUser.getContentMode().isRedacted();
-        export.date = MPConstants.dateTimeFormatter.print( new Instant() );
+        export.date = MPModelConstants.dateTimeFormatter.print( new Instant() );
 
         // Section: "user"
         user = new User();
         user.avatar = modelUser.getAvatar();
         user.full_name = modelUser.getFullName();
-        user.last_used = MPConstants.dateTimeFormatter.print( modelUser.getLastUsed() );
+        user.last_used = MPModelConstants.dateTimeFormatter.print( modelUser.getLastUsed() );
         user.key_id = modelUser.exportKeyID();
         user.algorithm = modelUser.getAlgorithm().version();
         user.default_type = modelUser.getDefaultType();
@@ -111,7 +111,7 @@ public class MPJSONFile extends MPJSONAnyObject {
             site.login_type = modelSite.getLoginType();
 
             site.uses = modelSite.getUses();
-            site.last_used = MPConstants.dateTimeFormatter.print( modelSite.getLastUsed() );
+            site.last_used = MPModelConstants.dateTimeFormatter.print( modelSite.getLastUsed() );
 
             site.questions = new LinkedHashMap<>();
             for (final MPFileQuestion question : modelSite.getQuestions())
@@ -141,7 +141,7 @@ public class MPJSONFile extends MPJSONAnyObject {
         return new MPFileUser(
                 user.full_name, CodeUtils.decodeHex( user.key_id ), algorithm, user.avatar,
                 (user.default_type != null)? user.default_type: algorithm.mpw_default_result_type(),
-                (user.last_used != null)? MPConstants.dateTimeFormatter.parseDateTime( user.last_used ): new Instant(),
+                (user.last_used != null)? MPModelConstants.dateTimeFormatter.parseDateTime( user.last_used ): new Instant(),
                 export.redacted? MPMarshaller.ContentMode.PROTECTED: MPMarshaller.ContentMode.VISIBLE,
                 MPMarshalFormat.JSON, file.getParentFile()
         );
@@ -157,7 +157,7 @@ public class MPJSONFile extends MPJSONAnyObject {
                     fileSite.type, export.redacted? fileSite.password: null,
                     fileSite.login_type, export.redacted? fileSite.login_name: null,
                     (fileSite._ext_mpw != null)? fileSite._ext_mpw.url: null, fileSite.uses,
-                    (fileSite.last_used != null)? MPConstants.dateTimeFormatter.parseDateTime( fileSite.last_used ): new Instant() );
+                    (fileSite.last_used != null)? MPModelConstants.dateTimeFormatter.parseDateTime( fileSite.last_used ): new Instant() );
 
             if (!export.redacted) {
                 if (fileSite.password != null)
@@ -170,7 +170,7 @@ public class MPJSONFile extends MPJSONAnyObject {
             if (fileSite.questions != null)
                 for (final Map.Entry<String, Site.Question> questionEntry : fileSite.questions.entrySet()) {
                     Site.Question fileQuestion = questionEntry.getValue();
-                    MPFileQuestion question = new MPFileQuestion( site, questionEntry.getKey(),
+                    MPFileQuestion question = new MPFileQuestion( site, ifNotNullElse( questionEntry.getKey(), "" ),
                                                                   fileQuestion.type, export.redacted? fileQuestion.answer: null );
 
                     if (!export.redacted && (fileQuestion.answer != null))