RUBY-5304: Provide rails dictionary for spellchecker

plugins/spellchecker/src/META-INF/plugin.xml

@@ -43,6 +43,7 @@
 
   <extensionPoints>
     <extensionPoint name="support" interface="com.intellij.spellchecker.tokenizer.SpellcheckingStrategy"/>
+    <extensionPoint name="bundledDictionaryProvider" interface="com.intellij.spellchecker.BundledDictionaryProvider"/>
   </extensionPoints>
 
   <extensions defaultExtensionNs="com.intellij">

plugins/spellchecker/src/com/intellij/spellchecker/BundledDictionaryProvider.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2000-2009 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.spellchecker;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+
+/**
+ * @author oleg
+ */
+public interface BundledDictionaryProvider {
+  ExtensionPointName<BundledDictionaryProvider> EP_NAME = ExtensionPointName.create("com.intellij.spellchecker.bundledDictionaryProvider");
+  
+  String[] getBundledDictionaries();
+}

plugins/spellchecker/src/com/intellij/spellchecker/SpellCheckerManager.java

@@ -19,6 +19,7 @@ import com.intellij.codeHighlighting.HighlightDisplayLevel;
 import com.intellij.codeInsight.daemon.DaemonCodeAnalyzer;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.ServiceManager;
+import com.intellij.openapi.extensions.Extensions;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.project.ProjectManager;
 import com.intellij.spellchecker.dictionary.Dictionary;
@@ -47,7 +48,7 @@ public class SpellCheckerManager {
 
   private Dictionary userDictionary;
 
-  private final String[] bundledDictionaries = new String[]{"english.dic", "jetbrains.dic"};
+  private final String[] BUNDLED_DICTIONARIES = new String[]{"english.dic", "jetbrains.dic"};
 
   @NotNull
   private final SuggestionProvider suggestionProvider = new BaseSuggestionProvider(this);
@@ -82,7 +83,7 @@ public class SpellCheckerManager {
     spellChecker.reset();
     final StateLoader stateLoader = new StateLoader(project);
     final List<Loader> loaders = new ArrayList<Loader>();
-    for (String dictionary : bundledDictionaries) {
+    for (String dictionary : getBundledDictionaries()) {
       if (this.settings == null || !this.settings.getBundledDisabledDictionariesPaths().contains(dictionary)) {
         loaders.add(new StreamLoader(SpellCheckerManager.class.getResourceAsStream(dictionary)));
       }
@@ -128,7 +129,12 @@ public class SpellCheckerManager {
 
   @NotNull
   public List<String> getBundledDictionaries() {
-    return (bundledDictionaries != null ? Arrays.asList(bundledDictionaries) : Collections.<String>emptyList());
+    final ArrayList<String> dictionaries = new ArrayList<String>();
+    dictionaries.addAll(Arrays.asList(BUNDLED_DICTIONARIES));
+    for (BundledDictionaryProvider provider : Extensions.getExtensions(BundledDictionaryProvider.EP_NAME)) {
+      dictionaries.addAll(Arrays.asList(provider.getBundledDictionaries()));
+    }
+    return dictionaries;
   }
 
   @NotNull

plugins/spellchecker/src/com/intellij/spellchecker/settings/SpellCheckerSettingsPane.java

@@ -209,7 +209,7 @@ public class SpellCheckerSettingsPane implements Disposable {
     dictionariesFolders.addAll(settings.getDictionaryFoldersPaths());
     allDictionaries.clear();
     for (String dictionary : manager.getBundledDictionaries()) {
-      allDictionaries.add(new Pair<String, Boolean>(dictionary, !settings.getBundledDisabledDictionariesPaths().contains(dictionary)));
+      allDictionaries.add(Pair.create(dictionary, !settings.getBundledDisabledDictionariesPaths().contains(dictionary)));
     }
 
     // user