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var wc={}
wc.cnl="Phrasebook" // try this controlled natural language first
wc.f=document.forms[0]
wc.e=element("extra")
wc.p=element("pick")
wc.serial=0
wc.translate=function() {
var current= ++wc.serial
var f=wc.f, e=wc.e, p=wc.p
function disable(yes) {
f.translate.disabled=yes
f.to.disabled=yes
f.swap.disabled=yes
}
disable(true)
f.output.value=""
f.output.className=""
wc.r=[]
wc.current=0
clear(e)
clear(p)
function show_error(msg) {
if(e) e.innerHTML="<span class=low_quality>"+msg+"</span>"
else {
f.output.value="["+msg+"]"
f.output.className="low_quality"
}
disable(false)
}
function trans_quality(r) {
var text=r.text
if(r.prob==0) return {quality:"high_quality",text:text}
else {
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)
for(var i=0;i<wc.r.length;i++) {
p.appendChild(text(" "))
var pick=text(i+1) // +"⃝"
if(i!=wc.current) {
var pick=node("a",{href:"#"},[pick])
pick.onclick=pick.onmouseover=show_pick(i)
}
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(),
target:"google_translate"},
[text("Google Translate")])))
}
function show_trans(i) {
var r=wc.r[i]
var t=trans_quality(r)
f.output.value=t.text
f.output.className=t.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(t.text,f.to.value)
}
function showit(r,text) {
wc.r.push(r)
var j=wc.r.length-1
wc.r[j].text=text
if(wc.current==j) show_trans(j)
else show_picks()
disable(false)
}
function trans(text,i) {
function step3(tra) {
if(wc.serial==current) {
if(tra.length>=1) {
if(tra[0].error) show_error(tra[0].error)
else {
var r=tra[0]
r.text=r.linearizations[0].text
// Two server requests in parallel:
unlextext(r.text,function(text){showit(r,text)})
if(wc.p && i<9) trans(text,i+1)
}
}
else if(i==0) show_error("Unable to translate")
}
}
gftranslate.translate(text,f.from.value,f.to.value,i,1,step3)
}
function step2(text) { trans(text,0) }
function step2cnl(text) {
function step3cnl(results) {
var trans=results[0].translations
if(trans && trans.length>=1) {
var r=trans[0]
r.text=r.linearizations[0].text
r.prob=0
unlextext(r.text,function(text){showit(r,text)})
}
step2(text)
}
wc.pgf_online.translate({from:wc.cnl+f.from.value,
to:wc.cnl+f.to.value,
input:text},
step3cnl,
function(){step2(text)})
}
lextext(f.input.value,wc.cnl ? step2cnl : step2)
return false;
}
wc.speak=function(text,lang) {
if(wc.speech) {
var u=new SpeechSynthesisUtterance(text)
u.lang=add_country(alangcode(lang))
speechSynthesis.cancel()
speechSynthesis.speak(u)
}
}
wc.swap=function() {
var f=wc.f
f.input.value=f.output.value;
var from=f.from.value
f.from.value=f.to.value
f.to.value=from
//wc.translate() // changing f.to.value is enough to start the translation
}
wc.google_translate_url=function() {
return "http://translate.google.com/"
+"#"+alangcode(wc.f.from.value)
+"/"+alangcode(wc.f.to.value)
+"/"+encodeURIComponent(wc.f.input.value)
}
/*
wc.try_google=function() {
var w=window.open(wc.google_translate_url(),
"google_translate")
w.focus()
}
*/
// 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.
if(wc.cnl) {
wc.pgf_online=pgf_online({});
wc.pgf_online.switch_grammar(wc.cnl+".pgf")
}
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