the default function of the PGFService should return list of functions as well as list of categories

src/server/PGFService.hs

@@ -138,7 +138,8 @@ doGrammar :: PGF -> Maybe (Accept Language) -> JSValue
 doGrammar pgf macc = showJSON $ toJSObject 
              [("name", showJSON (PGF.abstractName pgf)),
               ("userLanguage", showJSON (selectLanguage pgf macc)),
-              ("categories", showJSON categories), 
+              ("categories", showJSON categories),
+              ("functions", showJSON functions),
               ("languages", showJSON languages)]
   where languages = map toJSObject
                     [[("name", showJSON l), 
@@ -146,6 +147,7 @@ doGrammar pgf macc = showJSON $ toJSObject
                       ("canParse",     showJSON $ PGF.canParse pgf l)]
                      | l <- PGF.languages pgf]
         categories = map toJSObject [[("name", PGF.showCId cat)] | cat <- PGF.categories pgf]
+        functions  = map toJSObject [[("name", PGF.showCId fun)] | fun <- PGF.functions pgf]
 
 doGraphvizAbstrTree pgf tree = do
   let dot = PGF.graphvizAbstractTree pgf (True,True) tree

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/CompletionOracle.java

@@ -33,7 +33,9 @@ public class CompletionOracle extends SuggestOracle {
 			public void onAvailableLanguagesChanged() { clearState(); }
 			public void onInputLanguageChanged() { clearState(); }
 			public void onOutputLanguageChanged() { clearState(); }
-			public void onCatChanged() { clearState(); }
+			public void onAvailableCategoriesChanged() { clearState(); }
+			public void onStartCategoryChanged() { clearState(); }
+			public void onAvailableFunctionsChanged() { clearState(); }
 			public void onSettingsError(String msg, Throwable e) { clearState(); }
 		});
 	}

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/FridgeApp.java

@@ -265,9 +265,13 @@ public class FridgeApp implements EntryPoint {
 		public void onOutputLanguageChanged() {
 			update();
 		}
-		public void onCatChanged() {
+		public void onAvailableCategoriesChanged() {
+		}
+		public void onStartCategoryChanged() {
 			update();
 		}
+		public void onAvailableFunctionsChanged() {
+		}
 		public void onSettingsError(String msg, Throwable e) {
 			showError(msg,e);
 		}

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/PGF.java

@@ -28,6 +28,10 @@ public class PGF {
 		public final native String getUserLanguage() /*-{ return this.userLanguage; }-*/;
 
 		public final native IterableJsArray<Language> getLanguages() /*-{ return this.languages; }-*/;
+
+		public final native IterableJsArray<Category> getCategories() /*-{ return this.categories; }-*/;
+
+		public final native IterableJsArray<Function> getFunctions() /*-{ return this.functions; }-*/;
 	}
 
 	public static class Language extends JavaScriptObject {
@@ -38,6 +42,18 @@ public class PGF {
 		public final native boolean canParse() /*-{ return this.canParse; }-*/;
 	}
 
+	public static class Category extends JavaScriptObject {
+		protected Category() { }
+
+		public final native String getName() /*-{ return this.name; }-*/;
+	}
+
+	public static class Function extends JavaScriptObject {
+		protected Function() { }
+
+		public final native String getName() /*-{ return this.name; }-*/;
+	}
+
 	/* Translation */
 
 	public JSONRequest translate (String pgfURL, String input, String fromLang, String cat, String toLang,

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/PGFWrapper.java

@@ -35,7 +35,10 @@ public class PGFWrapper {
 	private LinkedHashMap<String,PGF.Language> languages;
 
 	private List<String> parseableLanguages;
-	
+
+	private List<String> categories;
+	private List<String> functions;
+
 	// Event listeners
 	
 	private List<SettingsListener> listeners = new LinkedList<SettingsListener>();
@@ -112,6 +115,18 @@ public class PGFWrapper {
 					}
 				}
 				fireAvailableLanguagesChanged();
+				
+				categories = new ArrayList<String>();
+				for (PGF.Category category : grammar.getCategories().iterable()) {
+					categories.add(category.getName());
+				}
+				fireAvailableCategoriesChanged();
+
+				functions = new ArrayList<String>();
+				for (PGF.Function function : grammar.getFunctions().iterable()) {
+					functions.add(function.getName());
+				}
+				fireAvailableFunctionsChanged();
 			}
 
 			public void onError (Throwable e) {
@@ -196,37 +211,43 @@ public class PGFWrapper {
 		fireOutputLanguageChanged();
 	}
 
-	public String getCat() {
+	public String getStartCategory() {
 		return cat;
 	}
 
-	public void setCat(String cat) {
+	public void setStartCategory(String cat) {
 		this.cat = cat;
-		fireCatChanged();
+		fireStartCategoryChanged();
+	}
+
+	public List<String> getCategories() {
+		return categories;
+	}
+
+	public List<String> getFunctions() {
+		return functions;
 	}
 	
 	
 	//
 	// Information about the available grammars
 	//
-	
 	public List<String> getGrammars() {
 		return grammars;
 	}
-	
+
 	//
 	// Information about the selected grammar
 	//
-	
 	private void clearCachedInfo () {
 		languages = null;
 		parseableLanguages = null;
 	}
-	
+
 	public String getUserLanguage () {
 		return userLanguage;
 	}
-	
+
 	public String getLanguageCode (String language) {
 		PGF.Language l = languages.get(language);
 		return l == null ? null : l.getLanguageCode();
@@ -249,7 +270,9 @@ public class PGFWrapper {
 		public void onAvailableLanguagesChanged();
 		public void onInputLanguageChanged();
 		public void onOutputLanguageChanged();
-		public void onCatChanged();
+		public void onAvailableCategoriesChanged();
+		public void onStartCategoryChanged();
+		public void onAvailableFunctionsChanged();
 		public void onSettingsError(String msg, Throwable e);
 	}
 	
@@ -258,7 +281,9 @@ public class PGFWrapper {
 		public void onAvailableLanguagesChanged() {}
 		public void onInputLanguageChanged() {}
 		public void onOutputLanguageChanged() {}
-		public void onCatChanged() {}
+		public void onAvailableCategoriesChanged() {}
+		public void onStartCategoryChanged() {}
+		public void onAvailableFunctionsChanged() {}
 		public void onSettingsError(String msg, Throwable e) {}
 	}
 
@@ -283,16 +308,28 @@ public class PGFWrapper {
 			listener.onInputLanguageChanged();
 		}
 	}
-	
+
 	protected void fireOutputLanguageChanged() {
 		for (SettingsListener listener : listeners) {
 			listener.onOutputLanguageChanged();
 		}
 	}
 	
-	protected void fireCatChanged() {
+	protected void fireAvailableCategoriesChanged() {
 		for (SettingsListener listener : listeners) {
-			listener.onCatChanged();
+			listener.onAvailableCategoriesChanged();
+		}
+	}
+
+	protected void fireStartCategoryChanged() {
+		for (SettingsListener listener : listeners) {
+			listener.onStartCategoryChanged();
+		}
+	}
+
+	protected void fireAvailableFunctionsChanged() {
+		for (SettingsListener listener : listeners) {
+			listener.onAvailableFunctionsChanged();
 		}
 	}
 	

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/SettingsPanel.java

@@ -108,7 +108,9 @@ public class SettingsPanel extends Composite {
 				toLangBox.setSelectedValue(pgf.getOutputLanguage());
 			}
 		}
-		public void onCatChanged() { }
+		public void onAvailableCategoriesChanged() { }
+		public void onStartCategoryChanged() { }
+		public void onAvailableFunctionsChanged() { }
 		public void onSettingsError(String msg, Throwable e) { }
 	}
 

src/server/gwt/src/se/chalmers/cs/gf/gwt/client/TranslateApp.java

@@ -300,9 +300,13 @@ public class TranslateApp implements EntryPoint {
 		public void onOutputLanguageChanged() {
 			update();
 		}
-		public void onCatChanged() {
+		public void onAvailableCategoriesChanged() {
+		}
+		public void onStartCategoryChanged() {
 			update();
 		}
+		public void onAvailableFunctionsChanged() {
+		}
 		public void onSettingsError(String msg, Throwable e) {
 			showError(msg,e);
 		}