From 9fa2a1323160bb79888693f13ed2f645db60fb15 Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Thu, 20 May 2010 19:10:09 +0400
Subject: [PATCH] don't show empty Python code style settings page; fix Python
 preview text

---
 .../psi/codeStyle/CodeStyleSettingsProvider.java     |  4 ++++
 .../options/CodeStyleSchemesConfigurable.java        | 12 +++++++-----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/platform/lang-api/src/com/intellij/psi/codeStyle/CodeStyleSettingsProvider.java b/platform/lang-api/src/com/intellij/psi/codeStyle/CodeStyleSettingsProvider.java
index 446067dec7ff..a154a764d6e1 100644
--- a/platform/lang-api/src/com/intellij/psi/codeStyle/CodeStyleSettingsProvider.java
+++ b/platform/lang-api/src/com/intellij/psi/codeStyle/CodeStyleSettingsProvider.java
@@ -44,4 +44,8 @@ public abstract class CodeStyleSettingsProvider {
   public String getConfigurableDisplayName() {
     return null;
   }
+
+  public boolean hasSettingsPage() {
+    return true;
+  }
 }
diff --git a/platform/lang-impl/src/com/intellij/application/options/CodeStyleSchemesConfigurable.java b/platform/lang-impl/src/com/intellij/application/options/CodeStyleSchemesConfigurable.java
index def93b6a2a80..b63e5b5d7d6a 100644
--- a/platform/lang-impl/src/com/intellij/application/options/CodeStyleSchemesConfigurable.java
+++ b/platform/lang-impl/src/com/intellij/application/options/CodeStyleSchemesConfigurable.java
@@ -208,11 +208,13 @@ public class CodeStyleSchemesConfigurable extends SearchableConfigurable.Parent.
     myPanels = new ArrayList<CodeStyleConfigurableWrapper>();
 
     for (final CodeStyleSettingsProvider provider : Extensions.getExtensions(CodeStyleSettingsProvider.EXTENSION_POINT_NAME)) {
-      myPanels.add(new CodeStyleConfigurableWrapper(provider, new CodeStyleSettingsPanelFactory() {
-        public NewCodeStyleSettingsPanel createPanel(final CodeStyleScheme scheme) {
-          return new NewCodeStyleSettingsPanel(provider.createSettingsPage(scheme.getCodeStyleSettings(), ensureModel().getCloneSettings(scheme)));
-        }
-      }));
+      if (provider.hasSettingsPage()) {
+        myPanels.add(new CodeStyleConfigurableWrapper(provider, new CodeStyleSettingsPanelFactory() {
+          public NewCodeStyleSettingsPanel createPanel(final CodeStyleScheme scheme) {
+            return new NewCodeStyleSettingsPanel(provider.createSettingsPage(scheme.getCodeStyleSettings(), ensureModel().getCloneSettings(scheme)));
+          }
+        }));
+      }
     }
 
     return myPanels.toArray(new Configurable[myPanels.size()]);