1 files changed, 67 insertions, 0 deletions
diff --git a/python/edu/learn-python/src/com/jetbrains/python/edu/ui/StudyTestContentPanel.java b/python/edu/learn-python/src/com/jetbrains/python/edu/ui/StudyTestContentPanel.java
new file mode 100644
index 000000000000..dee4fbaf9d01
--- /dev/null
+++ b/python/edu/learn-python/src/com/jetbrains/python/edu/ui/StudyTestContentPanel.java
@@ -0,0 +1,67 @@
+package com.jetbrains.python.edu.ui;
+
+import com.intellij.ui.DocumentAdapter;
+import com.intellij.ui.components.JBScrollPane;
+import org.jetbrains.annotations.NotNull;
+import com.jetbrains.python.edu.course.UserTest;
+
+import javax.swing.*;
+import javax.swing.event.DocumentEvent;
+import javax.swing.text.BadLocationException;
+import java.awt.*;
+
+public class StudyTestContentPanel extends JPanel {
+  public static final Dimension PREFERRED_SIZE = new Dimension(300, 200);
+  private static final Font HEADER_FONT = new Font("Arial", Font.BOLD, 16);
+  private final JTextArea myInputArea = new JTextArea();
+  private final JTextArea myOutputArea = new JTextArea();
+  public StudyTestContentPanel(UserTest userTest) {
+    this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+    initContentLabel("input", myInputArea);
+    myInputArea.getDocument().addDocumentListener(new BufferUpdater(userTest.getInputBuffer()));
+    myOutputArea.getDocument().addDocumentListener(new BufferUpdater(userTest.getOutputBuffer()));
+    initContentLabel("output", myOutputArea);
+    setEditable(userTest.isEditable());
+  }
+
+  private void initContentLabel(final String headerText, @NotNull final JTextArea contentArea) {
+    JLabel headerLabel = new JLabel(headerText);
+    headerLabel.setFont(HEADER_FONT);
+    this.add(headerLabel);
+    this.add(new JSeparator(SwingConstants.HORIZONTAL));
+    JScrollPane scroll = new JBScrollPane(contentArea);
+    scroll.setPreferredSize(PREFERRED_SIZE);
+    this.add(scroll);
+  }
+
+  private void setEditable(boolean isEditable) {
+    myInputArea.setEditable(isEditable);
+    myOutputArea.setEditable(isEditable);
+  }
+  public void addInputContent(final String content) {
+    myInputArea.setText(content);
+  }
+
+  public  void addOutputContent(final String content) {
+    myOutputArea.setText(content);
+  }
+
+  private class BufferUpdater extends DocumentAdapter {
+    private final StringBuilder myBuffer;
+
+    private BufferUpdater(StringBuilder buffer) {
+      myBuffer = buffer;
+    }
+
+    @Override
+    protected void textChanged(DocumentEvent e) {
+      myBuffer.delete(0, myBuffer.length());
+      try {
+        myBuffer.append(e.getDocument().getText(0, e.getDocument().getLength()));
+      }
+      catch (BadLocationException e1) {
+        e1.printStackTrace();
+      }
+    }
+  }
+}