Initial commit

review-strategy plugin, A plugin to control various ways to review
changes. Although I've only implemented one strategy, the purpose
of this plugin is to allow developers to implement many different
review strategies.

Done:
 * Adds a per-user preference to select the review strategy
 * BLIND strategy hides the following information on the change view:
   author, commiter, reviewer(s), change history summaries.

Note - 'expand all' button will show reviewer's votes and comments.
I've left this as-is on purpose so that users can get a *sneek peek*
at the votes.
diff --git a/.buckconfig b/.buckconfig
new file mode 100644
index 0000000..6a19c9a
--- /dev/null
+++ b/.buckconfig
@@ -0,0 +1,14 @@
+[alias]
+  review-strategy = //:review-strategy
+  plugin = //:review-strategy
+
+[java]
+  src_roots = java, resources
+
+[project]
+  ignore = .git
+
+[cache]
+  mode = dir
+  dir = buck-out/cache
+
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b4277e3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+/.buckversion
+/.buckd
+/.watchmanconfig
+/buck-out
+/bucklets
+/target
+/.classpath
+/.project
+/.settings/org.maven.ide.eclipse.prefs
+/.settings/org.eclipse.m2e.core.prefs
diff --git a/BUCK b/BUCK
new file mode 100644
index 0000000..5fe7c32
--- /dev/null
+++ b/BUCK
@@ -0,0 +1,21 @@
+include_defs('//bucklets/gerrit_plugin.bucklet')
+
+gerrit_plugin(
+  name = 'review-strategy',
+  srcs = glob(['src/main/java/**/*.java']),
+  resources = glob(['src/main/**/*']),
+  gwt_module = 'com.googlesource.gerrit.plugins.reviewstrategy.ReviewStrategy',
+  manifest_entries = [
+    'Gerrit-PluginName: review-strategy',
+    'Gerrit-ApiType: plugin',
+    'Gerrit-ApiVersion: 2.12-SNAPSHOT',
+    'Gerrit-Module: com.googlesource.gerrit.plugins.reviewstrategy.Module',
+    'Gerrit-HttpModule: com.googlesource.gerrit.plugins.reviewstrategy.HttpModule',
+  ],
+)
+
+# this is required for bucklets/tools/eclipse/project.py to work
+java_library(
+  name = 'classpath',
+  deps = [':review-strategy__plugin'],
+)
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..11069ed
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
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diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..9df7bf7
--- /dev/null
+++ b/VERSION
@@ -0,0 +1,5 @@
+# Used by BUCK to include "Implementation-Version" in plugin Manifest.
+# If this file doesn't exist the output of 'git describe' is used
+# instead.
+PLUGIN_VERSION = '2.12-SNAPSHOT'
+
diff --git a/lib/gerrit/BUCK b/lib/gerrit/BUCK
new file mode 100644
index 0000000..ae59eba
--- /dev/null
+++ b/lib/gerrit/BUCK
@@ -0,0 +1,20 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+VER = '2.12-SNAPSHOT'
+REPO = MAVEN_LOCAL
+
+maven_jar(
+  name = 'plugin-api',
+  id = 'com.google.gerrit:gerrit-plugin-api:' + VER,
+  attach_source = False,
+  repository = REPO,
+  license = 'Apache2.0',
+)
+
+maven_jar(
+  name = 'gwtui-api',
+  id = 'com.google.gerrit:gerrit-plugin-gwtui:' + VER,
+  attach_source = False,
+  repository = REPO,
+  license = 'Apache2.0',
+)
diff --git a/lib/gwt/BUCK b/lib/gwt/BUCK
new file mode 100644
index 0000000..662e776
--- /dev/null
+++ b/lib/gwt/BUCK
@@ -0,0 +1,32 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+VERSION = '2.7.0'
+
+maven_jar(
+  name = 'user',
+  id = 'com.google.gwt:gwt-user:' + VERSION,
+  license = 'Apache2.0',
+  attach_source = False,
+)
+
+maven_jar(
+  name = 'dev',
+  id = 'com.google.gwt:gwt-dev:' + VERSION,
+  license = 'Apache2.0',
+  deps = [
+    ':javax-validation',
+    ':javax-validation_src',
+  ],
+  attach_source = False,
+  exclude = ['org/eclipse/jetty/*'],
+)
+
+maven_jar(
+  name = 'javax-validation',
+  id = 'javax.validation:validation-api:1.0.0.GA',
+  bin_sha1 = 'b6bd7f9d78f6fdaa3c37dae18a4bd298915f328e',
+  src_sha1 = '7a561191db2203550fbfa40d534d4997624cd369',
+  license = 'Apache2.0',
+  visibility = [],
+)
+
diff --git a/lib/ow2/BUCK b/lib/ow2/BUCK
new file mode 100644
index 0000000..db6c76c
--- /dev/null
+++ b/lib/ow2/BUCK
@@ -0,0 +1,32 @@
+include_defs('//bucklets/maven_jar.bucklet')
+
+VERSION = '5.0.3'
+
+maven_jar(
+  name = 'ow2-asm',
+  id = 'org.ow2.asm:asm:' + VERSION,
+  sha1 = 'dcc2193db20e19e1feca8b1240dbbc4e190824fa',
+  license = 'ow2',
+)
+
+maven_jar(
+  name = 'ow2-asm-analysis',
+  id = 'org.ow2.asm:asm-analysis:' + VERSION,
+  sha1 = 'c7126aded0e8e13fed5f913559a0dd7b770a10f3',
+  license = 'ow2',
+)
+
+maven_jar(
+  name = 'ow2-asm-tree',
+  id = 'org.ow2.asm:asm-tree:' + VERSION,
+  sha1 = '287749b48ba7162fb67c93a026d690b29f410bed',
+  license = 'ow2',
+)
+
+maven_jar(
+  name = 'ow2-asm-util',
+  id = 'org.ow2.asm:asm-util:' + VERSION,
+  sha1 = '1512e5571325854b05fb1efce1db75fcced54389',
+  license = 'ow2',
+)
+
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..24a956d
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,121 @@
+<!--
+Copyright (C) 2016 The Android Open Source Project
+
+Licensed 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.googlesource.gerrit.plugins.reviewstrategy</groupId>
+  <artifactId>review-strategy</artifactId>
+  <packaging>jar</packaging>
+  <version>2.12-SNAPSHOT</version>
+  <name>review-strategy</name>
+
+  <properties>
+    <Gerrit-ApiType>plugin</Gerrit-ApiType>
+    <Gerrit-ApiVersion>${project.version}</Gerrit-ApiVersion>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.4</version>
+        <configuration>
+          <includes>
+            <include>**/*.*</include>
+          </includes>
+          <archive>
+            <manifestEntries>
+              <Gerrit-PluginName>review-strategy</Gerrit-PluginName>
+              <Gerrit-Module>com.googlesource.gerrit.plugins.reviewstrategy.Module</Gerrit-Module>
+              <Gerrit-HttpModule>com.googlesource.gerrit.plugins.reviewstrategy.HttpModule</Gerrit-HttpModule>
+              <Implementation-Vendor>Gerrit Code Review</Implementation-Vendor>
+              <Implementation-URL>https://www.gerritcodereview.com/</Implementation-URL>
+
+              <Implementation-Title>${Gerrit-ApiType} ${project.artifactId}</Implementation-Title>
+              <Implementation-Version>${project.version}</Implementation-Version>
+
+              <Gerrit-ApiType>${Gerrit-ApiType}</Gerrit-ApiType>
+              <Gerrit-ApiVersion>${Gerrit-ApiVersion}</Gerrit-ApiVersion>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.3.2</version>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+          <encoding>UTF-8</encoding>
+        </configuration>
+      </plugin>
+
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>gwt-maven-plugin</artifactId>
+        <version>2.7.0</version>
+        <configuration>
+          <module>com.googlesource.gerrit.plugins.reviewstrategy.ReviewStrategy</module>
+          <disableClassMetadata>true</disableClassMetadata>
+          <disableCastChecking>true</disableCastChecking>
+          <webappDirectory>${project.build.directory}/classes/static</webappDirectory>
+        </configuration>
+        <executions>
+          <execution>
+            <goals>
+              <goal>compile</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+
+    </plugins>
+  </build>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-${Gerrit-ApiType}-api</artifactId>
+      <version>${Gerrit-ApiVersion}</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-plugin-gwtui</artifactId>
+      <version>${Gerrit-ApiVersion}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>com.google.gwt</groupId>
+      <artifactId>gwt-user</artifactId>
+      <version>2.7.0</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+  <repositories>
+    <repository>
+      <id>snapshot-repository</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
+    </repository>
+  </repositories>
+</project>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/GetPreferences.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/GetPreferences.java
new file mode 100644
index 0000000..452f9ba
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/GetPreferences.java
@@ -0,0 +1,77 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy;
+
+import com.google.gerrit.extensions.annotations.PluginName;
+import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
+import com.google.gerrit.extensions.restapi.RestReadView;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.account.AccountResource;
+import com.google.gerrit.server.account.VersionedAccountPreferences;
+import com.google.gerrit.server.config.AllUsersName;
+import com.google.gerrit.server.git.GitRepositoryManager;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+
+import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.lib.Repository;
+
+import java.io.IOException;
+
+@Singleton
+public class GetPreferences implements RestReadView<AccountResource> {
+  private final String pluginName;
+  private final Provider<CurrentUser> self;
+  private final AllUsersName allUsersName;
+  private final GitRepositoryManager gitMgr;
+
+  @Inject
+  public GetPreferences(@PluginName String pluginName,
+      Provider<CurrentUser> self,
+      AllUsersName allUsersName,
+      GitRepositoryManager gitMgr) {
+    this.pluginName = pluginName;
+    this.self = self;
+    this.allUsersName = allUsersName;
+    this.gitMgr = gitMgr;
+  }
+
+  @Override
+  public PreferencesInfo apply(AccountResource rsrc) throws AuthException,
+      ResourceNotFoundException, IOException, ConfigInvalidException {
+    if (self.get() != rsrc.getUser()
+        && !self.get().getCapabilities().canModifyAccount()) {
+      throw new AuthException("not allowed to get preferences");
+    }
+
+    try (Repository git = gitMgr.openRepository(allUsersName)) {
+      VersionedAccountPreferences p =
+          VersionedAccountPreferences.forUser(rsrc.getUser().getAccountId());
+      p.load(git);
+
+      PreferencesInfo info = new PreferencesInfo();
+      info.reviewStrategy =
+          p.getConfig().getEnum(
+              "plugin", pluginName, "strategy", ReviewStrategy.DEFAULT);
+      return info;
+    }
+  }
+
+  public static class PreferencesInfo {
+    ReviewStrategy reviewStrategy;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/HttpModule.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/HttpModule.java
new file mode 100644
index 0000000..f84bda9
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/HttpModule.java
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy;
+
+import com.google.gerrit.extensions.registration.DynamicSet;
+import com.google.gerrit.extensions.webui.GwtPlugin;
+import com.google.gerrit.extensions.webui.WebUiPlugin;
+import com.google.gerrit.httpd.plugins.HttpPluginModule;
+
+public class HttpModule extends HttpPluginModule {
+
+  @Override
+  protected void configureServlets() {
+    DynamicSet.bind(binder(), WebUiPlugin.class)
+        .toInstance(new GwtPlugin("ReviewStrategy"));
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/Module.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/Module.java
new file mode 100644
index 0000000..58eb3d7
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/Module.java
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy;
+
+import static com.google.gerrit.server.account.AccountResource.ACCOUNT_KIND;
+
+import com.google.gerrit.extensions.restapi.RestApiModule;
+import com.google.inject.AbstractModule;
+
+public class Module extends AbstractModule {
+
+  @Override
+  protected void configure() {
+    install(new RestApiModule() {
+      @Override
+      protected void configure() {
+        get(ACCOUNT_KIND, "preferences").to(GetPreferences.class);
+        put(ACCOUNT_KIND, "preferences").to(SetPreferences.class);
+      }
+    });
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.gwt.xml b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.gwt.xml
new file mode 100644
index 0000000..c6fb5af
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.gwt.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (C) 2016 The Android Open Source Project
+
+ Licensed 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.
+-->
+<module rename-to="ReviewStrategy">
+  <!-- Inherit the core Web Toolkit stuff.                        -->
+  <inherits name="com.google.gwt.user.User"/>
+  <!-- Other module inherits                                      -->
+  <inherits name="com.google.gerrit.Plugin"/>
+  <inherits name="com.google.gwt.http.HTTP"/>
+  <!-- Using GWT built-in themes adds a number of static          -->
+  <!-- resources to the plugin. No theme inherits lines were      -->
+  <!-- added in order to make this plugin as simple as possible   -->
+  <!-- Specify the app entry point class.                         -->
+  <entry-point class="com.googlesource.gerrit.plugins.reviewstrategy.client.ReviewStrategyPlugin"/>
+  <stylesheet src="review-strategy.css"/>
+</module>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.java
new file mode 100644
index 0000000..1fe030b
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/ReviewStrategy.java
@@ -0,0 +1,19 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy;
+
+public enum ReviewStrategy {
+  DEFAULT, BLIND
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/SetPreferences.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/SetPreferences.java
new file mode 100644
index 0000000..43bf708
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/SetPreferences.java
@@ -0,0 +1,94 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy;
+
+import com.google.gerrit.extensions.annotations.PluginName;
+import com.google.gerrit.extensions.restapi.AuthException;
+import com.google.gerrit.extensions.restapi.RestModifyView;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.account.AccountResource;
+import com.google.gerrit.server.account.VersionedAccountPreferences;
+import com.google.gerrit.server.config.AllUsersName;
+import com.google.gerrit.server.git.MetaDataUpdate;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+
+import com.googlesource.gerrit.plugins.reviewstrategy.GetPreferences.PreferencesInfo;
+import com.googlesource.gerrit.plugins.reviewstrategy.SetPreferences.Input;
+
+import org.eclipse.jgit.errors.ConfigInvalidException;
+import org.eclipse.jgit.errors.RepositoryNotFoundException;
+
+import java.io.IOException;
+
+public class SetPreferences implements RestModifyView<AccountResource, Input> {
+  public static class Input {
+    ReviewStrategy reviewStrategy;
+  }
+
+  private final String pluginName;
+  private final Provider<CurrentUser> self;
+  private final AllUsersName allUsersName;
+  private final Provider<MetaDataUpdate.User> metaDataUpdateFactory;
+
+  @Inject
+  public SetPreferences(@PluginName String pluginName,
+      Provider<CurrentUser> self,
+      AllUsersName allUsersName,
+      Provider<MetaDataUpdate.User> metaDataUpdateFactory) {
+    this.pluginName = pluginName;
+    this.self = self;
+    this.allUsersName = allUsersName;
+    this.metaDataUpdateFactory = metaDataUpdateFactory;
+  }
+
+  @Override
+  public GetPreferences.PreferencesInfo apply(AccountResource rsrc, Input input)
+      throws AuthException, RepositoryNotFoundException, IOException,
+      ConfigInvalidException {
+    if (self.get() != rsrc.getUser()
+        && !self.get().getCapabilities().canModifyAccount()) {
+      throw new AuthException("not allowed to set preferences");
+    }
+
+    if (input == null) {
+      input = new Input();
+    }
+    if (input.reviewStrategy == null) {
+      input.reviewStrategy = ReviewStrategy.DEFAULT;
+    }
+
+    VersionedAccountPreferences p =
+        VersionedAccountPreferences.forUser(rsrc.getUser().getAccountId());
+    MetaDataUpdate md = metaDataUpdateFactory.get().create(allUsersName);
+    try {
+      p.load(md);
+
+      if (input.reviewStrategy != ReviewStrategy.DEFAULT) {
+        p.getConfig().setEnum("plugin", pluginName, "strategy", input.reviewStrategy);
+      } else {
+        p.getConfig().unset("plugin", pluginName, "strategy");
+      }
+
+      p.commit(md);
+    } finally {
+      md.close();
+    }
+
+    PreferencesInfo info = new PreferencesInfo();
+    info.reviewStrategy = input.reviewStrategy;
+    return info;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/LabelPanel.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/LabelPanel.java
new file mode 100644
index 0000000..fbdd4e2
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/LabelPanel.java
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy.client;
+
+import com.google.gerrit.plugin.client.Plugin;
+import com.google.gerrit.plugin.client.extension.Panel;
+import com.google.gerrit.plugin.client.rpc.RestApi;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.google.gwt.user.client.ui.VerticalPanel;
+
+public class LabelPanel extends VerticalPanel {
+  static class Factory implements Panel.EntryPoint {
+    @Override
+    public void onLoad(Panel panel) {
+      panel.setWidget(new LabelPanel());
+    }
+  }
+
+  LabelPanel() {
+    new RestApi("accounts").id("self").view(
+        Plugin.get().getPluginName(), "preferences")
+        .get(new AsyncCallback<PreferencesInfo>() {
+          @Override
+          public void onSuccess(PreferencesInfo result) {
+            ReviewStrategyPlugin.refreshDefaultReviewStrategy(result.reviewStrategy());
+          }
+
+          @Override
+          public void onFailure(Throwable caught) {
+            // never invoked
+          }
+        });
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/PreferencesInfo.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/PreferencesInfo.java
new file mode 100644
index 0000000..1651571
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/PreferencesInfo.java
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy.client;
+
+import com.google.gwt.core.client.JavaScriptObject;
+
+public class PreferencesInfo extends JavaScriptObject {
+  public static enum ReviewStrategy {
+    DEFAULT, BLIND
+  }
+
+  public static PreferencesInfo create() {
+    return (PreferencesInfo) createObject();
+  }
+
+  public final ReviewStrategy reviewStrategy() {
+    return ReviewStrategy.valueOf(_reviewStrategy());
+  }
+
+  private final native String _reviewStrategy() /*-{ return this.review_strategy; }-*/;
+  public  final native void reviewStrategy(String n) /*-{ if(n)this.review_strategy=n; }-*/;
+
+  protected PreferencesInfo() {
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPlugin.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPlugin.java
new file mode 100644
index 0000000..46d003d
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPlugin.java
@@ -0,0 +1,110 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy.client;
+
+import com.google.gerrit.client.GerritUiExtensionPoint;
+import com.google.gerrit.client.Resources;
+import com.google.gerrit.plugin.client.Plugin;
+import com.google.gerrit.plugin.client.PluginEntryPoint;
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.dom.client.Element;
+import com.google.gwt.user.client.ui.RootPanel;
+
+import com.googlesource.gerrit.plugins.reviewstrategy.client.PreferencesInfo.ReviewStrategy;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class ReviewStrategyPlugin extends PluginEntryPoint {
+  public static final Resources RESOURCES = GWT.create(Resources.class);
+
+  private final static String REVIEWERS_CLASS = "com-google-gerrit-" +
+      "client-change-ChangeScreen_BinderImpl_GenCss_style-label_user";
+  private final static String AUTHOR_COMMITER_CLASS = "com-google-gerrit-" +
+      "client-change-CommitBox_BinderImpl_GenCss_style-userPanel";
+  private final static String OWNER_CLASS = "com-google-gerrit-" +
+      "client-change-ChangeScreen_BinderImpl_GenCss_style-ownerPanel";
+  private final static String REVIEW_HISTORY_SUMMARY_CLASS = "com-google-" +
+      "gerrit-client-change-Message_BinderImpl_GenCss_style-summary";
+
+  private final static String HIDE_REVIEWERS_CLASS = Plugin.get()
+      .getName() + "-hideReviewers";
+  private final static String HIDE_AUTHOR_COMMITER_CLASS = Plugin.get()
+      .getName() + "-hideAuthorCommiter";
+  private final static String HIDE_OWNER_CLASS = Plugin.get()
+      .getName() + "-hideOwner";
+  private final static String HIDE_REVIEW_HISTORY_SUMMARY_CLASS = Plugin.get()
+      .getName() + "-hideReviewHistorySummary";
+
+  private static Map<String, String> classes = null;
+  static {
+    classes = new HashMap<>();
+    classes.put(REVIEWERS_CLASS, HIDE_REVIEWERS_CLASS);
+    classes.put(AUTHOR_COMMITER_CLASS, HIDE_AUTHOR_COMMITER_CLASS);
+    classes.put(OWNER_CLASS, HIDE_OWNER_CLASS);
+    classes.put(
+        REVIEW_HISTORY_SUMMARY_CLASS, HIDE_REVIEW_HISTORY_SUMMARY_CLASS);
+  }
+
+  @Override
+  public void onPluginLoad() {
+    injectCssToHideDefaultClasses();
+
+    Plugin.get().panel(
+        GerritUiExtensionPoint.CHANGE_SCREEN_BELOW_CHANGE_INFO_BLOCK,
+        new LabelPanel.Factory());
+    Plugin.get().panel(
+        GerritUiExtensionPoint.PREFERENCES_SCREEN_BOTTOM,
+        new ReviewStrategyPreferencesPanel.Factory());
+  }
+
+  public static void refreshDefaultReviewStrategy(ReviewStrategy ui) {
+    if (ui == ReviewStrategy.BLIND) {
+      hideDefaultReviewStrategy();
+    } else {
+      showDefaultReviewStrategy();
+    }
+  }
+
+  private static void hideDefaultReviewStrategy() {
+    Element body = RootPanel.getBodyElement();
+    for (Map.Entry<String, String> entry : classes.entrySet()) {
+      if (!body.hasClassName(entry.getValue())) {
+        body.addClassName(entry.getValue());
+      }
+    }
+  }
+
+  private static void showDefaultReviewStrategy() {
+    for (Map.Entry<String, String> entry : classes.entrySet()) {
+      RootPanel.getBodyElement().removeClassName(entry.getValue());
+    }
+  }
+
+  private void injectCssToHideDefaultClasses() {
+    StringBuilder css = new StringBuilder();
+    for (Map.Entry<String, String> entry : classes.entrySet()) {
+        css.append(".");
+        css.append(entry.getValue());
+        css.append(" .");
+        css.append(entry.getKey());
+        css.append(" {display: none;}");
+        injectCss(css.toString());
+    }
+  }
+
+  private final native void injectCss(String css)
+  /*-{ return $wnd.Gerrit.injectCss(css) }-*/;
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPreferencesPanel.java b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPreferencesPanel.java
new file mode 100644
index 0000000..cbdf591
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/client/ReviewStrategyPreferencesPanel.java
@@ -0,0 +1,126 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed 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.
+
+package com.googlesource.gerrit.plugins.reviewstrategy.client;
+
+import com.google.gerrit.plugin.client.Plugin;
+import com.google.gerrit.plugin.client.extension.Panel;
+import com.google.gerrit.plugin.client.rpc.RestApi;
+import com.google.gwt.dom.client.Style.Unit;
+import com.google.gwt.event.dom.client.ChangeEvent;
+import com.google.gwt.event.dom.client.ChangeHandler;
+import com.google.gwt.user.client.Timer;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.google.gwt.user.client.ui.HorizontalPanel;
+import com.google.gwt.user.client.ui.Label;
+import com.google.gwt.user.client.ui.ListBox;
+import com.google.gwt.user.client.ui.VerticalPanel;
+
+public class ReviewStrategyPreferencesPanel extends VerticalPanel {
+  static class Factory implements Panel.EntryPoint {
+    @Override
+    public void onLoad(Panel panel) {
+      panel.setWidget(new ReviewStrategyPreferencesPanel());
+    }
+  }
+
+  private Label savedLabel;
+  private Timer hideTimer;
+
+  ReviewStrategyPreferencesPanel() {
+    new RestApi("accounts").id("self")
+        .view(Plugin.get().getPluginName(), "preferences")
+        .get(new AsyncCallback<PreferencesInfo>() {
+          @Override
+          public void onSuccess(PreferencesInfo result) {
+            display(result);
+          }
+
+          @Override
+          public void onFailure(Throwable caught) {
+            // never invoked
+          }
+        });
+  }
+
+  private void display(PreferencesInfo info) {
+    Label heading = new Label(Plugin.get().getName() + " plugin");
+    heading.setStyleName("smallHeading");
+    add(heading);
+    HorizontalPanel p = new HorizontalPanel();
+    add(p);
+
+    Label label = new Label("Review Strategy:");
+    p.add(label);
+    label.getElement().getStyle().setMarginRight(5, Unit.PX);
+    label.getElement().getStyle().setMarginTop(2, Unit.PX);
+    final ListBox ui = new ListBox();
+    p.add(ui);
+    savedLabel = new Label("Saved");
+    savedLabel.getElement().getStyle().setMarginLeft(5, Unit.PX);
+    savedLabel.getElement().getStyle().setMarginTop(2, Unit.PX);
+    savedLabel.setVisible(false);
+    p.add(savedLabel);
+
+    for (PreferencesInfo.ReviewStrategy v :
+      PreferencesInfo.ReviewStrategy.values()) {
+      ui.addItem(v.name(), v.name());
+    }
+
+    for (int i = 0; i < ui.getItemCount(); i++) {
+      if (info.reviewStrategy().name().equals(ui.getValue(i))) {
+        ui.setSelectedIndex(i);
+        break;
+      }
+    }
+
+    ui.addChangeHandler(new ChangeHandler() {
+      @Override
+      public void onChange(ChangeEvent event) {
+        savedLabel.setVisible(false);
+        PreferencesInfo info = PreferencesInfo.create();
+        info.reviewStrategy(ui.getSelectedValue());
+        new RestApi("accounts").id("self")
+            .view(Plugin.get().getPluginName(), "preferences")
+            .put(info, new AsyncCallback<PreferencesInfo>() {
+              @Override
+              public void onSuccess(PreferencesInfo result) {
+                showSavedStatus();
+              }
+
+              @Override
+              public void onFailure(Throwable caught) {
+                // never invoked
+              }
+            });
+      }
+    });
+  }
+
+  private void showSavedStatus() {
+    if (hideTimer != null) {
+      hideTimer.cancel();
+      hideTimer = null;
+    }
+    savedLabel.setVisible(true);
+    hideTimer = new Timer() {
+      @Override
+      public void run() {
+        savedLabel.setVisible(false);
+        hideTimer = null;
+      }
+    };
+    hideTimer.schedule(1000);
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/public/review-strategy.css b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/public/review-strategy.css
new file mode 100644
index 0000000..4bd49be
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewstrategy/public/review-strategy.css
@@ -0,0 +1,3 @@
+.reviewstrategy-panel {
+  border-spacing: 0px 5px;
+}
diff --git a/src/main/resources/Documentation/about.md b/src/main/resources/Documentation/about.md
new file mode 100644
index 0000000..b9421b6
--- /dev/null
+++ b/src/main/resources/Documentation/about.md
@@ -0,0 +1,18 @@
+The @PLUGIN@ plugin allows users to configure a different review strategies.
+
+User can configure the label UI under `Settings` > `Preferences` >
+`Review Strategy`:
+
+![PreferencesScreenshot](images/preferences.png)
+
+### `DEFAULT`
+
+This is the one that come out of the box with Gerrit.  All of the information
+for a change is shown to the user for a review.
+
+### `BLIND`
+
+This strategy hides some information from the user to facilitate an un-biased
+review of changes.  Many scientific paper reviews are done this way.
+
+![ApprovalTableScreenshot](images/strategy_blind.png)
diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
new file mode 100644
index 0000000..c00a9d0
--- /dev/null
+++ b/src/main/resources/Documentation/build.md
@@ -0,0 +1,82 @@
+Build
+=====
+
+This plugin can be built with Buck or Maven.
+
+Buck
+----
+
+Two build modes are supported: Standalone and in Gerrit tree.
+The standalone build mode is recommended, as this mode doesn't require
+the Gerrit tree to exist locally.
+
+
+
+Clone bucklets library:
+
+```
+  git clone https://gerrit.googlesource.com/bucklets
+
+```
+and link it to @PLUGIN@ plugin directory:
+
+```
+  cd @PLUGIN@ && ln -s ../bucklets .
+```
+
+Add link to the .buckversion file:
+
+```
+  cd @PLUGIN@ && ln -s bucklets/buckversion .buckversion
+```
+
+Add link to the .watchmanconfig file:
+```
+  cd @PLUGIN@ && ln -s bucklets/watchmanconfig .watchmanconfig
+```
+
+To build the plugin, issue the following command:
+
+
+```
+  buck build plugin
+```
+
+The output is created in
+
+```
+  buck-out/gen/@PLUGIN@.jar
+```
+
+
+Clone or link this plugin to the plugins directory of Gerrit's source
+tree, and issue the command:
+
+```
+  buck build plugins/@PLUGIN@
+```
+
+The output is created in
+
+```
+  buck-out/gen/plugins/@PLUGIN@/@PLUGIN@.jar
+```
+
+This project can be imported into the Eclipse IDE:
+
+```
+  ./tools/eclipse/project.py
+```
+
+Maven
+-----
+
+Note that the Maven build is provided for compatibility reasons, but
+it is considered to be deprecated and will be removed in a future
+version of this plugin.
+
+To build with Maven, run
+
+```
+mvn clean package
+```
diff --git a/src/main/resources/Documentation/images/preferences.png b/src/main/resources/Documentation/images/preferences.png
new file mode 100644
index 0000000..571ace9
--- /dev/null
+++ b/src/main/resources/Documentation/images/preferences.png
Binary files differ
diff --git a/src/main/resources/Documentation/images/strategy_blind.png b/src/main/resources/Documentation/images/strategy_blind.png
new file mode 100644
index 0000000..874c8eb
--- /dev/null
+++ b/src/main/resources/Documentation/images/strategy_blind.png
Binary files differ
diff --git a/src/main/resources/Documentation/rest-api-accounts.md b/src/main/resources/Documentation/rest-api-accounts.md
new file mode 100644
index 0000000..f293137
--- /dev/null
+++ b/src/main/resources/Documentation/rest-api-accounts.md
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+@PLUGIN@ - /accounts/ REST API
+==============================
+
+This page describes the '/accounts/' REST endpoints that are added by
+the @PLUGIN@ plugin.
+
+Please also take note of the general information on the
+[REST API](../../../Documentation/rest-api.html).
+
+<a id="project-endpoints"> @PLUGIN@ Endpoints
+--------------------------------------------
+
+### <a id="get-preferences"> Get Preferences
+_GET /accounts/[\{account-id\}](../../../Documentation/rest-api-accounts.html#account-id)/@PLUGIN@~preferences_
+
+Gets the preferences of a user for the @PLUGIN@ plugin.
+
+#### Request
+
+```
+  GET /accounts/self/@PLUGIN@~preferences HTTP/1.0
+```
+
+As response a [PreferencesInfo](#preferences-info) entity is returned
+that contains the preferences of a user for the @PLUGIN@ plugin.
+
+#### Response
+
+```
+  HTTP/1.1 200 OK
+  Content-Disposition: attachment
+  Content-Type: application/json;charset=UTF-8
+
+  )]}'
+  {
+    "review_strategy": "BLIND"
+  }
+```
+
+### <a id="put-preferences"> Put Preferences
+_PUT /accounts/[\{account-id\}](../../../Documentation/rest-api-accounts.html#account-id)/@PLUGIN@~preferences_
+
+Sets the user preferences for the @PLUGIN@ plugin.
+
+The new preferences must be specified as a [PreferenceInfo](#preference-info)
+entity in the request body. Not setting a parameter means that the
+parameters are set to the defaults.
+
+#### Request
+
+```
+  PUT /accounts/self/@PLUGIN@~preferences HTTP/1.0
+  Content-Type: application/json;charset=UTF-8
+
+  {
+    "review_strategy": "BLIND"
+  }
+```
+
+
+<a id="json-entities">JSON Entities
+-----------------------------------
+
+### <a id="preferences-info"></a>PreferencesInfo
+
+The `PreferencesInfo` entity contains the preferences of the @PLUGIN@
+plugin.
+
+* _review_strategy_: The control that should be displayed on preferences screen
+  to change the review strategy. Possible values are `DEFAULT` and `BLIND`.
+
+SEE ALSO
+--------
+
+* [Account related REST endpoints](../../../Documentation/rest-api-accounts.html)
+
+GERRIT
+------
+Part of [Gerrit Code Review](../../../Documentation/index.html)