1 files changed, 95 insertions, 0 deletions
diff --git a/python/edu/learn-python/src/com/jetbrains/python/edu/actions/StudyShowHintAction.java b/python/edu/learn-python/src/com/jetbrains/python/edu/actions/StudyShowHintAction.java
new file mode 100644
index 000000000000..1efa90889449
--- /dev/null
+++ b/python/edu/learn-python/src/com/jetbrains/python/edu/actions/StudyShowHintAction.java
@@ -0,0 +1,95 @@
+package com.jetbrains.python.edu.actions;
+
+import com.intellij.codeInsight.documentation.DocumentationComponent;
+import com.intellij.codeInsight.documentation.DocumentationManager;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.LogicalPosition;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.DumbAwareAction;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.popup.JBPopup;
+import com.intellij.openapi.ui.popup.JBPopupFactory;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiManager;
+import com.jetbrains.python.edu.StudyTaskManager;
+import com.jetbrains.python.edu.StudyUtils;
+import com.jetbrains.python.edu.course.Course;
+import com.jetbrains.python.edu.course.TaskFile;
+import com.jetbrains.python.edu.course.TaskWindow;
+import com.jetbrains.python.edu.editor.StudyEditor;
+import icons.StudyIcons;
+
+import java.io.File;
+
+public class StudyShowHintAction extends DumbAwareAction {
+  public static final String ACTION_ID = "ShowHintAction";
+  public static final String SHORTCUT = "ctrl pressed 7";
+
+  public StudyShowHintAction() {
+    super("Show hint", "Show hint", StudyIcons.ShowHint);
+  }
+
+  public void actionPerformed(AnActionEvent e) {
+    Project project = e.getProject();
+    if (project != null) {
+      DocumentationManager documentationManager = DocumentationManager.getInstance(project);
+      DocumentationComponent component = new DocumentationComponent(documentationManager);
+      Editor selectedEditor = StudyEditor.getSelectedEditor(project);
+      FileDocumentManager fileDocumentManager = FileDocumentManager.getInstance();
+      assert selectedEditor != null;
+      VirtualFile openedFile = fileDocumentManager.getFile(selectedEditor.getDocument());
+      if (openedFile != null) {
+        StudyTaskManager taskManager = StudyTaskManager.getInstance(e.getProject());
+        TaskFile taskFile = taskManager.getTaskFile(openedFile);
+        if (taskFile != null) {
+          PsiFile file = PsiManager.getInstance(project).findFile(openedFile);
+          if (file != null) {
+            LogicalPosition pos = selectedEditor.getCaretModel().getLogicalPosition();
+            TaskWindow taskWindow = taskFile.getTaskWindow(selectedEditor.getDocument(), pos);
+            if (taskWindow != null) {
+              String hint = taskWindow.getHint();
+              if (hint == null) {
+                return;
+              }
+              Course course = taskManager.getCourse();
+              if (course != null) {
+                File resourceFile = new File(course.getResourcePath());
+                File resourceRoot = resourceFile.getParentFile();
+                if (resourceRoot != null && resourceRoot.exists()) {
+                  File hintsDir = new File(resourceRoot, Course.HINTS_DIR);
+                  if (hintsDir.exists()) {
+                    String hintText = StudyUtils.getFileText(hintsDir.getAbsolutePath(), hint, true);
+                    if (hintText != null) {
+                      int offset = selectedEditor.getDocument().getLineStartOffset(pos.line) + pos.column;
+                      PsiElement element = file.findElementAt(offset);
+                      if (element != null) {
+                        component.setData(element, hintText, true, null);
+                        final JBPopup popup =
+                          JBPopupFactory.getInstance().createComponentPopupBuilder(component, component)
+                            .setDimensionServiceKey(project, DocumentationManager.JAVADOC_LOCATION_AND_SIZE, false)
+                            .setResizable(true)
+                            .setMovable(true)
+                            .setRequestFocus(true)
+                            .createPopup();
+                        component.setHint(popup);
+                        popup.showInBestPositionFor(selectedEditor);
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  @Override
+  public void update(AnActionEvent e) {
+    StudyUtils.updateAction(e);
+  }
+}