Separate ActionScript code style settings preview (related to IDEA-56387)

platform/lang-api/src/com/intellij/psi/codeStyle/LanguageCodeStyleSettingsProvider.java

@@ -46,6 +46,26 @@ public abstract class LanguageCodeStyleSettingsProvider {
   public void customizeSettings(@NotNull CodeStyleSettingsCustomizable consumer, @NotNull SettingsType settingsType) {
   }
 
+  /**
+   * Override this method if file extension to be used with samples is different from the one returned by associated file type.
+   * 
+   * @return The file extension for samples (null by default).
+   */
+  @Nullable
+  public String getFileExt() {
+    return null;
+  }
+
+  /**
+   * Override this method if language name shown in preview tab must be different from the name returned by Language class itself.
+   * 
+   * @return The language name to show in preview tab (null by default).
+   */
+  @Nullable
+  public String getLanguageName() {
+    return null;
+  }
+
   /**
    * Creates an instance of <code>CommonCodeStyleSettings</code> and sets initial default values for those
    * settings which differ from the original.
@@ -90,7 +110,9 @@ public abstract class LanguageCodeStyleSettingsProvider {
   @Nullable
   public static Language getLanguage(String langName) {
     for (LanguageCodeStyleSettingsProvider provider : Extensions.getExtensions(EP_NAME)) {
-      if (langName.equals(provider.getLanguage().getDisplayName())) {
+      String name = provider.getLanguageName();
+      if (name == null) name = provider.getLanguage().getDisplayName();
+      if (langName.equals(name)) {
         return provider.getLanguage();
       }
     }
@@ -106,5 +128,25 @@ public abstract class LanguageCodeStyleSettingsProvider {
     }
     return null;
   }
+  
+  @Nullable
+  public static String getFileExt(Language lang) {
+    for (LanguageCodeStyleSettingsProvider provider : Extensions.getExtensions(EP_NAME)) {
+      if (provider.getLanguage().equals(lang)) {
+        return provider.getFileExt();
+      }
+    }
+    return null;
+  }
+  
+  @Nullable
+  public static String getLanguageName(Language lang) {
+    for (LanguageCodeStyleSettingsProvider provider : Extensions.getExtensions(EP_NAME)) {
+      if (provider.getLanguage().equals(lang)) {
+        return provider.getLanguageName();
+      }
+    }
+    return null;
+  }   
 
 }

platform/lang-impl/src/com/intellij/application/options/CodeStyleAbstractPanel.java

@@ -258,10 +258,14 @@ public abstract class CodeStyleAbstractPanel implements Disposable {
 
   protected void prepareForReformat(PsiFile psiFile) {
   }
+  
+  protected String getFileExt() {
+    return getFileTypeExtension(getFileType());
+  }
 
   protected PsiFile createFileFromText(Project project, String text) {
     return PsiFileFactory.getInstance(project).createFileFromText(
-      "a." + getFileTypeExtension(getFileType()), getFileType(), text, LocalTimeCounter.currentTime(), true
+      "a." + getFileExt(), getFileType(), text, LocalTimeCounter.currentTime(), true
     );
   }
 

platform/lang-impl/src/com/intellij/application/options/codeStyle/MultilanguageCodeStyleAbstractPanel.java

@@ -120,6 +120,13 @@ public abstract class MultilanguageCodeStyleAbstractPanel extends CodeStyleAbstr
     return LanguageCodeStyleSettingsProvider.getRightMargin(myLanguage, getSettingsType());
   }
 
+  @Override
+  protected String getFileExt() {
+    String fileExt = LanguageCodeStyleSettingsProvider.getFileExt(myLanguage);
+    if (fileExt != null) return fileExt;
+    return super.getFileExt();
+  }
+
   @NotNull
   @Override
   protected FileType getFileType() {
@@ -190,7 +197,7 @@ public abstract class MultilanguageCodeStyleAbstractPanel extends CodeStyleAbstr
       Language[] langs = LanguageCodeStyleSettingsProvider.getLanguagesWithCodeStyleSettings();
       if (langs.length == 0) return;
       for (Language lang : langs) {
-        tabbedPane.addTab(lang.getDisplayName(), createDummy());
+        tabbedPane.addTab(getTabName(lang), createDummy());
       }
       tabbedPane.setComponentAt(0, getEditor().getComponent());
       myLangSelectionIndex = 0;
@@ -229,7 +236,7 @@ public abstract class MultilanguageCodeStyleAbstractPanel extends CodeStyleAbstr
 
   private void selectCurrentLanguageTab() {
     for(int i = 0; i < tabbedPane.getTabCount(); i ++) {
-      if (myLanguage.getDisplayName().equals(tabbedPane.getTitleAt(i))) {
+      if (getTabName(myLanguage).equals(tabbedPane.getTitleAt(i))) {
         tabbedPane.setSelectedIndex(i);
         return;
       }
@@ -252,4 +259,10 @@ public abstract class MultilanguageCodeStyleAbstractPanel extends CodeStyleAbstr
   private static JComponent createDummy() {
     return new JLabel("");
   }
+
+  private static String getTabName(Language language) {
+    String tabName = LanguageCodeStyleSettingsProvider.getLanguageName(language);
+    if (tabName == null) tabName = language.getDisplayName();
+    return tabName;
+  }
 }