Wide coverage demo web app improvements

+ Adapt language selection menus to the languages supported by the grammar.
+ Add translation quality colors to the links to alternative translations.
+ Also added more country codes in langcode.js (needed for speech synthesis
  voice selection).

src/www/js/gftranslate.js

@@ -25,9 +25,8 @@ gftranslate.translate=function(source,from,to,start,limit,cont) {
     else cont([{error:"sentence too long"}])
 }
 
-// Get functions to test which source and target langauges are supported
+// Get list of supported languages
-gftranslate.get_support=function(cont) {
+gftranslate.get_languages=function(cont) {
-    function support(code) { return gftranslate.targets[code] }
     function init2(grammar_info) {
 	var ls=grammar_info.languages
 	gftranslate.grammar=grammar_info.name
@@ -35,9 +34,19 @@ gftranslate.get_support=function(cont) {
 	for(var i=0;i<ls.length;i++)
 	    if(ls[i].name.substr(0,n)==pre) langs.push(ls[i].name.substr(n))
 	gftranslate.targetlist=langs
+	cont(langs)
+    }
+    if(gftranslate.targetlist) cont(gftranslate.targetlist)
+    else gftranslate.call("?command=c-grammar",init2)
+}
+
+// Get functions to test which source and target langauges are supported
+gftranslate.get_support=function(cont) {
+    function support(code) { return gftranslate.targets[code] }
+    function init2(langs) {
 	gftranslate.targets=toSet(langs)
 	cont(support,support)
     }
     if(gftranslate.targets) cont(support,support)
-    else gftranslate.call("?command=c-grammar",init2)
+    else gftranslate.get_languages(init2)
 }

src/www/js/langcode.js

@@ -36,6 +36,16 @@ function add_country(code) {
     case "fi": return "fi-FI"
     case "zh": return "zh-CN"
     case "hi": return "hi-IN"
+    case "es": return "es-ES"
+    case "it": return "it-IT"
+    case "bg": return "bg-BG" // ?
+    case "da": return "da-DK"
+    case "nb": return "nb-NO"
+    case "nl": return "nl-NL"
+    case "ja": return "ja-JP"
+    case "ro": return "ja-RO"
+    case "el": return "el-GR"
+    // ...
     default: return code
     }
 }

src/www/js/wc.js

@@ -20,6 +20,18 @@ wc.translate=function() {
 	}
 	f.translate.disabled=false
     }
+    function trans_quality(r) {
+	var text=r.text
+	var quality="default_quality"
+	switch(text[0]) {
+	case '+': text=text.substr(1); quality="high_quality"; break;
+	case '*': text=text.substr(1); quality="low_quality"; break;
+	default:
+	    if(r.tree[0]=="?") quality="low_quality"
+	}
+	if(text[0]==" ") text=text.substr(1)
+	return {quality:quality,text:text}
+    }
     function show_pick(i) { return function() { show_trans(i); return false; } }
     function show_picks() {
 	clear(p)
@@ -30,7 +42,8 @@ wc.translate=function() {
 		var pick=node("a",{href:"#"},[pick])
 		pick.onclick=pick.onmouseover=show_pick(i)
 	    }
-	    p.appendChild(span_class("pick",pick))
+	    var q=trans_quality(wc.r[i]).quality
+	    p.appendChild(span_class("pick "+q,pick))
 	}
 	p.appendChild(wrap_class("small","pick",
 				 node("a",{href:wc.google_translate_url(),
@@ -39,21 +52,13 @@ wc.translate=function() {
     }
     function show_trans(i) {
 	var r=wc.r[i]
-	var text=r.text
+	var t=trans_quality(r)
-	var quality="default_quality"
+	f.output.value=t.text
-	switch(text[0]) {
+	f.output.className=t.quality
-	case '+': text=text.substr(1); quality="high_quality"; break;
-	case '*': text=text.substr(1); quality="low_quality"; break;
-	default:
-	    if(r.tree[0]=="?") quality="low_quality"
-	}
-	if(text[0]==" ") text=text.substr(1)
-	f.output.value=text
-	f.output.className=quality
 	if(e) e.innerHTML=r.prob+"<br>"+r.tree
 	wc.current=i
 	if(wc.p /*&& wc.r.length>1*/) show_picks()
-	if(f.speak.checked) wc.speak(text,f.to.value)
+	if(f.speak.checked) wc.speak(t.text,f.to.value)
     }
 
     function trans(text,i) {
@@ -114,10 +119,28 @@ wc.try_google=function() {
 }
 */
 
+// Update language selection menus with the languages supported by the grammar
+function init_languages() {
+    function init2(langs) {
+	var langset=toSet(langs)
+	function update_menu(m) {
+	    var l=m.value
+	    clear(m)
+	    for(var i=0;i<langs.length;i++)
+		m.appendChild(option(concname(langs[i]),langs[i]))
+	    if(langset[l]) m.value=l
+	}
+	update_menu(wc.f.from)
+	update_menu(wc.f.to)
+    }
+    gftranslate.get_languages(init2)
+}
+
 function init_speech() {
     wc.speech=window.speechSynthesis && window.speechSynthesis.getVoices().length>0
     if(wc.speech) element("speak").style.display="inline"
 }
 
+init_languages()
 init_speech()
 setTimeout(init_speech,500) // A hack for Chrome.