diff --git a/action_basics/build.gradle b/action_basics/build.gradle
new file mode 100644
index 000000000..7cb52ea20
--- /dev/null
+++ b/action_basics/build.gradle
@@ -0,0 +1,33 @@
+plugins {
+ id 'java'
+ id 'org.jetbrains.intellij' version '0.4.7'
+}
+
+group 'org.intellij.sdk'
+version '2.0.0'
+
+sourceCompatibility = 1.8
+
+repositories {
+ mavenCentral()
+}
+
+dependencies {
+ testCompile group: 'junit', name: 'junit', version: '4.12'
+}
+
+// See https://github.com/JetBrains/gradle-intellij-plugin/
+intellij {
+ version '2019.1'
+}
+patchPluginXml {
+}
+
+// Define javadoc paths, force rebuild before jar is built
+javadoc {
+ // Set of source files to include
+ source = sourceSets.main.java.srcDirs
+ // Include all class files, e.g. from libraries
+ classpath = sourceSets.main.compileClasspath
+}
+jar.dependsOn javadoc
diff --git a/action_basics/gradle/wrapper/gradle-wrapper.jar b/action_basics/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000..94336fcae
Binary files /dev/null and b/action_basics/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/action_basics/gradle/wrapper/gradle-wrapper.properties b/action_basics/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..290541c73
--- /dev/null
+++ b/action_basics/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/action_basics/gradlew b/action_basics/gradlew
new file mode 100755
index 000000000..cccdd3d51
--- /dev/null
+++ b/action_basics/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+ cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/action_basics/gradlew.bat b/action_basics/gradlew.bat
new file mode 100644
index 000000000..f9553162f
--- /dev/null
+++ b/action_basics/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/action_basics/settings.gradle b/action_basics/settings.gradle
new file mode 100644
index 000000000..45b6826e6
--- /dev/null
+++ b/action_basics/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'action_basics'
+
diff --git a/action_basics/src/main/java/icons/ActionBasicsIcons.java b/action_basics/src/main/java/icons/ActionBasicsIcons.java
new file mode 100644
index 000000000..bfd0e4392
--- /dev/null
+++ b/action_basics/src/main/java/icons/ActionBasicsIcons.java
@@ -0,0 +1,12 @@
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+
+package icons;
+
+import com.intellij.openapi.util.IconLoader;
+
+import javax.swing.*;
+
+public class ActionBasicsIcons {
+public static final Icon Sdk_default_icon = IconLoader.getIcon("/icons/sdk_16.svg");
+
+}
diff --git a/action_basics/src/main/java/org/intellij/sdk/action/CustomDefaultActionGroup.java b/action_basics/src/main/java/org/intellij/sdk/action/CustomDefaultActionGroup.java
new file mode 100644
index 000000000..52af8cd1d
--- /dev/null
+++ b/action_basics/src/main/java/org/intellij/sdk/action/CustomDefaultActionGroup.java
@@ -0,0 +1,35 @@
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+
+package org.intellij.sdk.action;
+
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.CommonDataKeys;
+import com.intellij.openapi.actionSystem.DefaultActionGroup;
+import com.intellij.openapi.editor.Editor;
+import icons.ActionBasicsIcons;
+
+/**
+ * Creates an action group to contain menu actions. See plugin.xml declarations.
+ * @author Anna Bulenkova
+ * @author jhake
+ */
+public class CustomDefaultActionGroup extends DefaultActionGroup {
+
+ /**
+ * Given CustomDefaultActionGroup is derived from ActionGroup, in this context
+ * update() determines whether the action group itself should be enabled or disabled.
+ * Requires an editor to be active in order to enable the group functionality.
+ * @see com.intellij.openapi.actionSystem.AnAction#update(AnActionEvent)
+ * @param event Event received when the associated group-id menu is chosen.
+ */
+ @Override
+ public void update(AnActionEvent event) {
+ // Enable/disable depending on whether user is editing
+ Editor editor = event.getData(CommonDataKeys.EDITOR);
+ event.getPresentation().setEnabled(editor != null);
+ // Always make visible.
+ event.getPresentation().setVisible(true);
+ // Take this opportunity to set an icon for the menu entry.
+ event.getPresentation().setIcon(ActionBasicsIcons.Sdk_default_icon);
+ }
+}
diff --git a/action_basics/src/main/java/org/intellij/sdk/action/DynamicActionGroup.java b/action_basics/src/main/java/org/intellij/sdk/action/DynamicActionGroup.java
new file mode 100644
index 000000000..8db9fddbd
--- /dev/null
+++ b/action_basics/src/main/java/org/intellij/sdk/action/DynamicActionGroup.java
@@ -0,0 +1,40 @@
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+
+package org.intellij.sdk.action;
+
+import com.intellij.icons.AllIcons;
+import com.intellij.openapi.actionSystem.ActionGroup;
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import icons.ActionBasicsIcons;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Demonstrates adding an action group to a menu statically in plugin.xml, and then creating a menu item
+ * within the group at runtime. See plugin.xml for the declaration of DynamicActionGroup,
+ * and note the group declaration does not contain an action.
+ * DynamicActionGroup is based on ActionGroup because menu children are determined
+ * on rules other than just positional constraints.
+ *
+ * @author Anna Bulenkova
+ * @see ActionGroup
+ */
+public class DynamicActionGroup extends ActionGroup {
+
+ /**
+ * Returns an array of menu actions for the group.
+ *
+ * @param anActionEvent Event received when the associated group-id menu is chosen.
+ * @return AnAction[] An instance of AnAction, in this case containing a single instance of the
+ * PopDialogAction class.
+ */
+ @NotNull
+ @Override
+ public AnAction[] getChildren(AnActionEvent anActionEvent) {
+ return new AnAction[]{ new PopDialogAction("Action Added at Runtime",
+ "Dynamic Action Demo",
+ ActionBasicsIcons.Sdk_default_icon)
+ };
+ }
+
+}
diff --git a/action_basics/src/main/java/org/intellij/sdk/action/PopDialogAction.java b/action_basics/src/main/java/org/intellij/sdk/action/PopDialogAction.java
new file mode 100644
index 000000000..12e45a515
--- /dev/null
+++ b/action_basics/src/main/java/org/intellij/sdk/action/PopDialogAction.java
@@ -0,0 +1,78 @@
+// Copyright 2000-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+
+package org.intellij.sdk.action;
+
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.CommonDataKeys;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.Messages;
+import com.intellij.pom.Navigatable;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import javax.swing.*;
+
+/**
+ * Action class to demonstrate how to interact with the IntelliJ Platform.
+ * The only action this class performs is to provide the user with a popup dialog as feedback.
+ * Typically this class is instantiated by the IntelliJ Platform framework based on declarations
+ * in the plugin.xml file. But when added at runtime this class is instantiated by an action group.
+ */
+public class PopDialogAction extends AnAction {
+
+ /**
+ * This default constructor is used by the IntelliJ Platform framework to
+ * instantiate this class based on plugin.xml declarations. Only needed in PopDialogAction
+ * class because a second constructor is overridden.
+ * @see AnAction#AnAction()
+ */
+ public PopDialogAction() {
+ super();
+ }
+
+ /**
+ * This constructor is used to support dynamically added menu actions.
+ * It sets the text, description to be displayed for the menu item.
+ * Otherwise, the default AnAction constructor is used by the IntelliJ Platform.
+ * @param menuText The text to be displayed as a menu item.
+ * @param menuDescription The description of the menu item.
+ * @param menuIcon The icon to be used with the menu item.
+ */
+ public PopDialogAction(@Nullable String menuText, @Nullable String menuDescription, @Nullable Icon menuIcon) {
+ super(menuText, menuDescription, menuIcon);
+ }
+
+ /**
+ * Gives the user feedback when the dynamic action menu is chosen.
+ * Pops a simple message dialog. See the psi_demo plugin for an
+ * example of how to use AnActionEvent to access data.
+ * @param event Event received when the associated menu item is chosen.
+ */
+ @Override
+ public void actionPerformed(@NotNull AnActionEvent event) {
+ // Using the event, create and show a dialog
+ Project currentProject = event.getProject();
+ StringBuffer dlgMsg = new StringBuffer(event.getPresentation().getText() + " Selected!");
+ String dlgTitle = event.getPresentation().getDescription();
+ // If an element is selected in the editor, add info about it.
+ Navigatable nav = event.getData(CommonDataKeys.NAVIGATABLE);
+ if (nav != null) {
+ dlgMsg.append(String.format("\nSelected Element: %s", nav.toString()));
+ }
+ Messages.showMessageDialog(currentProject, dlgMsg.toString(), dlgTitle, Messages.getInformationIcon());
+ }
+
+ /**
+ * Determines whether this menu item is available for the current context.
+ * Requires a project to be open.
+ * @param evnt Event received when the associated group-id menu is chosen.
+ */
+ @Override
+ public void update(AnActionEvent evnt) {
+ // Set the availability based on whether a project is open
+ Project project = evnt.getProject();
+ evnt.getPresentation().setEnabledAndVisible(project != null);
+ }
+
+}
diff --git a/action_basics/src/main/resources/META-INF/plugin.xml b/action_basics/src/main/resources/META-INF/plugin.xml
new file mode 100644
index 000000000..13793426a
--- /dev/null
+++ b/action_basics/src/main/resources/META-INF/plugin.xml
@@ -0,0 +1,108 @@
+
+
+
+
+ org.intellij.sdk.action
+
+
+ SDK Action Sample Project
+
+
+ 2.0.0
+
+
+
+
+
+
+ Adds entries to the Tools menu.
+ ]]>
+
+
+
+
2.0.0 Renamed from register_actions and converted to Gradle project.
+
1.1 Refactor to give users feedback when menu items are selected.