Syntax editor: select subset of available languages

Also added a basic readme file with a list of todo's

src/www/syntax-editor/README.md

@@ -0,0 +1,32 @@
+# GF web-based syntax editor
+
+John J. Camilleri  
+November 2012
+
+An improved version of the [old syntax editor][1].
+
+[1]:http://www.grammaticalframework.org/~meza/restWiki/editor.html
+
+## Notes
+
+Tested with latest Chrome and Firefox.
+
+## TODO
+
+- Enter string/float/int literals
+- UI issue with DisambPhrasebookEng
+- more prominence to Disamb-linearizations
+- ambiguity: (optionally) parse all the resulting linearizations/variants and point out those which are ambiguous
+- random-generate a non-empty tree as a starting point
+- try to retain subtree when replacing node
+- add undo/redo (or back/forward) navigation
+- structure the set of fridge magnets some more. Even though they
+are alphabetically sorted, it's difficult to find the one that I want,
+maybe put a newline before the magnet whose first letter is different
+with respect to the previous magnet
+- The formal-looking funs and cats are not linked/aligned to the linearizations.
+Maybe a possible UI could be where the user is
+clicking on the linearization (in a chosen language) and the tree is
+drawn under it (from top to bottom, not from left to right as
+currently). So that the alignment of words to functions is always
+explicit. But maybe this is not doable.

src/www/syntax-editor/js/editor.js

@@ -108,14 +108,16 @@ Editor.prototype.get_refinements=function(cat) {
 
 Editor.prototype.select_refinement=function(fun) {
     with (this) {
+        clear(ui.refinements);
         ast.removeChildren();
         ast.setFun(fun);
+//        redraw_tree();
+
         var args = {
             id: fun,
             format: "json"
         };
         var err = function(data){
-            clear(refinements);
             alert("no refinements");
         };
         server.browse(args, bind(complete_refinement,this), err);
@@ -139,7 +141,7 @@ Editor.prototype.complete_refinement=function(data) {
             }
         }
         
-        // Update vis
+        // Update ui
         redraw_tree();
         update_linearisation();
 

src/www/syntax-editor/js/editor_menu.js

@@ -15,11 +15,22 @@ function EditorMenu(editor,opts) {
     this.container = editor.ui.menubar;
     this.ui = {
         startcat_menu: empty("select"),
-        to_menu: empty_id("select","to_menu")
+        to_toggle: button("...", function(){
+            var sel = t.ui.to_menu;
+            if (sel.classList.contains("hidden"))
+                sel.classList.remove("hidden")
+            else
+                sel.classList.add("hidden")
+        }),
+        to_menu: node("select",{
+            id: "to_menu",
+            multiple: "multiple",
+            class: "hidden"
+        } )
     };
     with(this.ui) {
 	appendChildren(this.container, [text(" Startcat: "),startcat_menu]);
-        appendChildren(this.container, [text(" To: "), to_menu]);
+        appendChildren(this.container, [text(" To: "), to_toggle, to_menu]);
         startcat_menu.onchange=bind(this.change_startcat,this);
         to_menu.onchange=bind(this.change_language,this);
     }
@@ -119,10 +130,12 @@ EditorMenu.prototype.change_startcat=function () {
 
 // 
 EditorMenu.prototype.change_language=function () {
-    if (this.ui.to_menu.value == "All")
+    this.editor.languages = new Array();
-        this.editor.languages = new Array();
+    for (i in this.ui.to_menu.options) {
-    else
+        var opt = this.ui.to_menu.options[i];
-        this.editor.languages = new Array(this.ui.to_menu.value);
+        if (opt.selected)
+            this.editor.languages.push(opt.value);
+    }
     this.editor.update_linearisation();
 }
 

src/www/syntax-editor/ui/style.css

@@ -2,6 +2,18 @@ body {
     background: #ccc url("http://cloud.grammaticalframework.org/minibar/brushed-metal.png");
 }
 
+.hidden
+{ 
+  display:none;
+}
+
+select#to_menu
+{ 
+  height: 10em;
+  position: absolute;
+  min-width: 5em;
+  }
+
 #tree
 {
   white-space:pre;