1 files changed, 91 insertions, 0 deletions
diff --git a/python/edu/src/com/jetbrains/python/edu/PyExecuteFileLineMarkerProvider.java b/python/edu/src/com/jetbrains/python/edu/PyExecuteFileLineMarkerProvider.java
new file mode 100644
index 000000000000..03522bb8cf8a
--- /dev/null
+++ b/python/edu/src/com/jetbrains/python/edu/PyExecuteFileLineMarkerProvider.java
@@ -0,0 +1,91 @@
+package com.jetbrains.python.edu;
+
+import com.intellij.codeHighlighting.Pass;
+import com.intellij.codeInsight.daemon.GutterIconNavigationHandler;
+import com.intellij.codeInsight.daemon.LineMarkerInfo;
+import com.intellij.codeInsight.daemon.LineMarkerProvider;
+import com.intellij.execution.actions.ConfigurationContext;
+import com.intellij.icons.AllIcons;
+import com.intellij.ide.DataManager;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.markup.GutterIconRenderer;
+import com.intellij.psi.PsiComment;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiWhiteSpace;
+import com.intellij.psi.util.PsiUtilBase;
+import com.intellij.util.Function;
+import com.jetbrains.python.psi.PyFile;
+import com.jetbrains.python.psi.PyImportStatement;
+import com.jetbrains.python.psi.PyStatement;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.awt.event.MouseEvent;
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * @author traff
+ */
+public class PyExecuteFileLineMarkerProvider implements LineMarkerProvider {
+  @Nullable
+  @Override
+  public LineMarkerInfo getLineMarkerInfo(@NotNull PsiElement element) {
+    return null;
+  }
+
+  @Override
+  public void collectSlowLineMarkers(@NotNull List<PsiElement> elements, @NotNull Collection<LineMarkerInfo> result) {
+    for (PsiElement element : elements) {
+      if (isFirstCodeLine(element)) {
+        result.add(new LineMarkerInfo<PsiElement>(
+          element, element.getTextRange(), AllIcons.Actions.Execute, Pass.UPDATE_OVERRIDEN_MARKERS,
+          new Function<PsiElement, String>() {
+            @Override
+            public String fun(PsiElement e) {
+              return "Execute '" + e.getContainingFile().getName() + "'";
+            }
+          },
+          new GutterIconNavigationHandler<PsiElement>() {
+            @Override
+            public void navigate(MouseEvent e, PsiElement elt) {
+              executeCurrentScript(elt);
+            }
+          },
+          GutterIconRenderer.Alignment.RIGHT));
+      }
+    }
+  }
+
+  private static void executeCurrentScript(PsiElement elt) {
+    Editor editor = PsiUtilBase.findEditor(elt);
+    assert editor != null;
+
+    final ConfigurationContext context =
+      ConfigurationContext.getFromContext(DataManager.getInstance().getDataContext(editor.getComponent()));
+    PyRunCurrentFileAction.run(context);
+  }
+
+  private static boolean isFirstCodeLine(PsiElement element) {
+    return element instanceof PyStatement &&
+           element.getParent() instanceof PyFile &&
+           !isNothing(element) &&
+           nothingBefore(element);
+  }
+
+  private static boolean nothingBefore(PsiElement element) {
+    element = element.getPrevSibling();
+    while (element != null) {
+      if (!isNothing(element)) {
+        return false;
+      }
+      element = element.getPrevSibling();
+    }
+
+    return true;
+  }
+
+  private static boolean isNothing(PsiElement element) {
+    return (element instanceof PsiComment) || (element instanceof PyImportStatement) || (element instanceof PsiWhiteSpace);
+  }
+}