Add extension point to edu student plugin to provide action group for study tool window toolbar

python/educational-core/student/resources/META-INF/plugin.xml

@@ -32,6 +32,7 @@
   <extensionPoints>
     <extensionPoint qualifiedName="Edu.StudyExecutor" beanClass="com.intellij.lang.LanguageExtensionPoint"/>
     <extensionPoint qualifiedName="Edu.StudyLanguageManager" beanClass="com.intellij.lang.LanguageExtensionPoint"/>
+    <extensionPoint qualifiedName="Edu.studyActionProvider" interface="com.jetbrains.edu.learning.StudyActionProvider"/>
   </extensionPoints>
 
   <actions>

python/educational-core/student/src/com/jetbrains/edu/learning/StudyActionProvider.java

@@ -0,0 +1,15 @@
+package com.jetbrains.edu.learning;
+
+import com.intellij.openapi.actionSystem.DefaultActionGroup;
+import com.intellij.openapi.extensions.ExtensionPointName;
+import com.intellij.openapi.project.Project;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public interface StudyActionProvider {
+  ExtensionPointName<StudyActionProvider> EP_NAME = ExtensionPointName.create("Edu.studyActionProvider");
+  
+  @Nullable
+  DefaultActionGroup getActionGroup(@NotNull Project project);
+  
+}

python/educational-core/student/src/com/jetbrains/edu/learning/ui/StudyToolWindow.java

@@ -35,8 +35,10 @@ import com.intellij.ui.components.JBScrollPane;
 import com.intellij.util.ui.JBUI;
 import com.intellij.util.ui.UIUtil;
 import com.jetbrains.edu.EduNames;
+import com.jetbrains.edu.courseFormat.Course;
 import com.jetbrains.edu.courseFormat.Task;
 import com.jetbrains.edu.courseFormat.TaskFile;
+import com.jetbrains.edu.learning.StudyActionProvider;
 import com.jetbrains.edu.learning.StudyTaskManager;
 import com.jetbrains.edu.learning.StudyUtils;
 import com.jetbrains.edu.learning.actions.*;
@@ -116,18 +118,38 @@ public class StudyToolWindow extends SimpleToolWindowPanel implements DataProvid
   }
 
   private static JPanel createToolbarPanel(@NotNull final Project project) {
+    final DefaultActionGroup group = getActionGroup(project);
+
+    final ActionToolbar actionToolBar = ActionManager.getInstance().createActionToolbar("Study", group, true);
+    return JBUI.Panels.simplePanel(actionToolBar.getComponent());
+  }
+
+  private static DefaultActionGroup getActionGroup(@NotNull final Project project) {
+    StudyActionProvider[] extensions = StudyActionProvider.EP_NAME.getExtensions();
+    DefaultActionGroup actionGroup = null;
+    Course course = StudyTaskManager.getInstance(project).getCourse();
+    if (course == null) {
+      return createDefaultActionGroup(project);
+    }
+    for (StudyActionProvider actionProvider: extensions) {
+      actionGroup = actionProvider.getActionGroup(project);
+      if (actionGroup != null) break;
+    }
+
+    return actionGroup == null ? createDefaultActionGroup(project) : actionGroup;
+  }
+
+  @NotNull
+  private static DefaultActionGroup createDefaultActionGroup(@NotNull Project project) {
     final DefaultActionGroup group = new DefaultActionGroup();
     group.add(StudyCheckAction.createCheckAction(StudyTaskManager.getInstance(project).getCourse()));
     group.add(new StudyPreviousStudyTaskAction());
     group.add(new StudyNextStudyTaskAction());
     group.add(new StudyRefreshTaskFileAction());
     group.add(new StudyShowHintAction());
-
     group.add(new StudyRunAction());
     group.add(new StudyEditInputAction());
-
-    final ActionToolbar actionToolBar = ActionManager.getInstance().createActionToolbar("Study", group, true);
-    return JBUI.Panels.simplePanel(actionToolBar.getComponent());
+    return group;
   }
 
   static class StudyFileEditorManagerListener implements FileEditorManagerListener {

python/educational-python/student-python/resources/META-INF/plugin.xml

@@ -32,6 +32,7 @@
   <extensions defaultExtensionNs="Edu">
     <StudyExecutor implementationClass="com.jetbrains.edu.learning.PyStudyExecutor" language="Python"/>
     <StudyLanguageManager implementationClass="com.jetbrains.edu.learning.PyStudyLanguageManager" language="Python"/>
+    <studyActionProvider implementation="com.jetbrains.edu.learning.PyStudyActionProvider" />
   </extensions>
   <actions>
     <action id="WelcomeScreen.PythonIntro" class="com.jetbrains.edu.learning.actions.PyStudyIntroductionCourseAction"

python/educational-python/student-python/src/com/jetbrains/edu/learning/PyStudyActionProvider.java

@@ -0,0 +1,29 @@
+package com.jetbrains.edu.learning;
+
+import com.intellij.openapi.actionSystem.DefaultActionGroup;
+import com.intellij.openapi.project.Project;
+import com.jetbrains.edu.courseFormat.Course;
+import com.jetbrains.edu.learning.actions.*;
+import org.jetbrains.annotations.NotNull;
+
+public class PyStudyActionProvider implements StudyActionProvider {
+  
+  @Override
+  public DefaultActionGroup getActionGroup(@NotNull Project project) {
+    Course course = StudyTaskManager.getInstance(project).getCourse();
+    if (course != null && course.getLanguage().equals("Python") && course.getCourseType().equals("PyCharm")) {
+      final DefaultActionGroup group = new DefaultActionGroup();
+
+      group.add(StudyCheckAction.createCheckAction(course));
+      group.add(new StudyPreviousStudyTaskAction());
+      group.add(new StudyNextStudyTaskAction());
+      group.add(new StudyRefreshTaskFileAction());
+      group.add(new StudyShowHintAction());
+
+      group.add(new StudyRunAction());
+      group.add(new StudyEditInputAction());
+      return group;
+    }
+    return null;
+  }
+}