http://git-wip-us.apache.org/repos/asf/isis/blob/fcf368f0/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_i18n-label-in-wicket-viewer.adoc
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diff --git 
a/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_i18n-label-in-wicket-viewer.adoc
 
b/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_i18n-label-in-wicket-viewer.adoc
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@@ -0,0 +1,26 @@
+[[_ugvw_hints-and-tips_i18n-label-in-wicket-viewer]]
+= How i18n the Wicket viewer?
+:Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you under the Apache License, Version 2.0 (the "License"); you may not 
use this file except in compliance with the License. You may obtain a copy of 
the License at. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or agreed to in writing, software distributed under the License 
is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR  CONDITIONS OF ANY 
KIND, either express or implied. See the License for the specific language 
governing permissions and limitations under the License.
+:_basedir: ../../
+:_imagesdir: images/
+
+
+
+From link:http://isis.markmail.org/thread/ctppmtcbsf4iskzi[this thread] on the 
Apache Isis users mailing list:
+
+* _I am trying to internationalize the label descriptions of form actions, eg 
those in `ActionParametersFormPanel`.
+Referencing those via their message id inside a .po file didn't work either.
+Can this be done?_
+
+
+The above FAQ was raised against `1.10.0`.  As of `1.11.0` (due to 
link:https://issues.apache.org/jira/browse/ISIS-1093[ISIS-1093]) it _is_ now 
possible to internationalize both the Wicket viewer's labels as well as the 
regular translations of the domain object metadata using the `.po` translation 
files as supported by the 
xref:../rgsvc/rgsvc.adoc#_rgsvc_spi_TranslationService[`TranslationService`].
+
+Full details of the ``msgId``s that must be added to the `translations.po` 
file can be found in xref:guides/ugbtb.adoc#__ugbtb_i18n_wicket-viewer[i18n] 
section of the xref:../ugbtb/ugbtb.adoc#[beyond the basics] guide.
+
+In prior releases (`1.10.0` and earlier) it was necessary to use 
link:https://ci.apache.org/projects/wicket/guide/6.x/guide/i18n.html#i18n_3[Wicket's
 internationalization support], namely resource bundles.  This is still 
supported (as a fallback):
+
+* create a directory structure inside the webapp resource folder following 
that pattern `org.apache.isis.viewer.wicket.ui.components.actions`
+
+* Inside there create an equivalent 
`ActionParametersFormPanel_xx_XX.properties` or 
`ActionParametersFormPanel_xx.properties` file for the various locales that you 
want to support (eg `ActionParametersFormPanel_en_UK.properties`, 
`ActionParametersFormPanel_en_US.properties`, 
`ActionParametersFormPanel_de.properties` and so on).
+
+

http://git-wip-us.apache.org/repos/asf/isis/blob/fcf368f0/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_per-user-themes.adoc
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diff --git 
a/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_per-user-themes.adoc
 
b/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_per-user-themes.adoc
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b/adocs/documentation/src/main/asciidoc/guides/ugvw/_ugvw_hints-and-tips_per-user-themes.adoc
@@ -0,0 +1,91 @@
+[[_ugvw_hints-and-tips_per-user-themes]]
+= Per-user Themes
+:Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you under the Apache License, Version 2.0 (the "License"); you may not 
use this file except in compliance with the License. You may obtain a copy of 
the License at. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or agreed to in writing, software distributed under the License 
is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR  CONDITIONS OF ANY 
KIND, either express or implied. See the License for the specific language 
governing permissions and limitations under the License.
+:_basedir: ../../
+:_imagesdir: images/
+
+
+From link:http://isis.markmail.org/thread/kb4442niwwbnghey[this thread] on the 
Apache Isis users mailing list:
+
+* _Is it possible to have each of our resellers (using our Isis application) 
use there own theme/branding with their own logo and colors?
+Would this also be possible for the login page, possibly depending on the used 
host name?_
+
+
+Yes, you can do this, by installing a custom implementation of the Wicket 
Bootstrap's `ActiveThemeProvider`.
+
+The http://github.com/isisaddons/isis-app-todoapp[Isis addons' todoapp] 
(non-ASF) actually 
link:https://github.com/isisaddons/isis-app-todoapp/tree/61b8114a8e01dbb3c380b31cf09eaed456407570[does
 this], storing the info via the 
http://github.com/isisaddons/isis-module-settings[Isis addons' settings module] 
settings modules:
+
+
+[source,java]
+.IActiveThemeProvider implementation
+----
+public class UserSettingsThemeProvider implements ActiveThemeProvider {
+    ...
+    @Override
+    public ITheme getActiveTheme() {
+        if(IsisContext.getSpecificationLoader().isInitialized()) {
+            final String themeName = IsisContext.doInSession(new 
Callable<String>() {
+                @Override
+                public String call() throws Exception {
+                    final UserSettingsService userSettingsService =
+                        lookupService(UserSettingsService.class);
+                    final UserSetting activeTheme = userSettingsService.find(
+                            
IsisContext.getAuthenticationSession().getUserName(),
+                            ACTIVE_THEME);
+                    return activeTheme != null ? activeTheme.valueAsString() : 
null;
+                }
+            });
+            return themeFor(themeName);
+        }
+        return new SessionThemeProvider().getActiveTheme();
+    }
+    @Override
+    public void setActiveTheme(final String themeName) {
+        IsisContext.doInSession(new Runnable() {
+            @Override
+            public void run() {
+                final String currentUsrName =
+                    IsisContext.getAuthenticationSession().getUserName();
+                final UserSettingsServiceRW userSettingsService =
+                        lookupService(UserSettingsServiceRW.class);
+                final UserSettingJdo activeTheme =
+                        (UserSettingJdo) userSettingsService.find(
+                                                currentUsrName, ACTIVE_THEME);
+                if(activeTheme != null) {
+                    activeTheme.updateAsString(themeName);
+                } else {
+                    userSettingsService.newString(
+                        currentUsrName, ACTIVE_THEME, "Active Bootstrap theme 
for user", themeName);
+                }
+            }
+        });
+    }
+    private ITheme themeFor(final String themeName) {
+        final ThemeProvider themeProvider = settings.getThemeProvider();
+        if(themeName != null) {
+            for (final ITheme theme : themeProvider.available()) {
+                if (themeName.equals(theme.name()))
+                    return theme;
+            }
+        }
+        return themeProvider.defaultTheme();
+    }
+    ...
+}
+----
+
+and
+
+[source,java]
+.Using the ActiveThemeProvider
+----
+@Override
+protected void init() {
+    super.init();
+
+    final IBootstrapSettings settings = Bootstrap.getSettings();
+    settings.setThemeProvider(new 
BootswatchThemeProvider(BootswatchTheme.Flatly));
+
+    settings.setActiveThemeProvider(new UserSettingsThemeProvider(settings));
+}
+----

http://git-wip-us.apache.org/repos/asf/isis/blob/fcf368f0/adocs/documentation/src/main/asciidoc/guides/ugvw/ugvw.adoc
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diff --git a/adocs/documentation/src/main/asciidoc/guides/ugvw/ugvw.adoc 
b/adocs/documentation/src/main/asciidoc/guides/ugvw/ugvw.adoc
index 4ddba0d..fde7dbc 100644
--- a/adocs/documentation/src/main/asciidoc/guides/ugvw/ugvw.adoc
+++ b/adocs/documentation/src/main/asciidoc/guides/ugvw/ugvw.adoc
@@ -53,8 +53,8 @@ include::_ugvw_features.adoc[leveloffset=+1]
 include::_ugvw_configuration-properties.adoc[leveloffset=+1]
 include::_ugvw_layout.adoc[leveloffset=+1]
 include::_ugvw_customisation.adoc[leveloffset=+1]
-
 include::_ugvw_extending.adoc[leveloffset=+1]
+include::_ugvw_hints-and-tips.adoc[leveloffset=+1]
 
 include::_ugvw_isis-addons.adoc[leveloffset=+1]
 

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