mirror of
https://github.com/GrammaticalFramework/gf-core.git
synced 2026-04-30 23:02:50 -06:00
Adding a Simple Translation Tool
It is part of the cloud services available with gf -server.
This commit is contained in:
hallgren
429
src/www/translator/translator.js
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429
src/www/translator/translator.js
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/* --- Translator object ---------------------------------------------------- */
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function Translator() {
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this.local=tr_local();
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this.view=element("document")
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this.current=this.local.get("current")
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this.document=this.current && this.current!="/" && this.local.get("/"+this.current) || empty_document()
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this.server=pgf_online({})
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this.server.get_grammarlist(bind(this.extend_methods,this))
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update_language_menu(this,"source")
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update_language_menu(this,"target")
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this.redraw();
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}
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function update_language_menu(t,id) {
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var dl=element(id);
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clear(dl);
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for(var i in languages) {
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var l=languages[i]
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dl.appendChild(wrap("dt",radiobutton(id,l.code,l.name,bind(t.change,t))))
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}
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}
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Translator.prototype.redraw=function() {
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var t=this;
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if(t.current=="/") t.browse()
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else {
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t.drawing=t.draw_document()
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clear(t.view)
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appendChildren(t.view,t.drawing.doc)
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var o=t.document.options
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update_radiobutton("method",o.method)
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update_radiobutton("source",o.from)
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update_radiobutton("target",o.to)
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if(o.method!="Manual") {
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function cont2(gr_info) {
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t.grammar_info=gr_info
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t.update_translations()
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}
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function cont1() { t.server.grammar_info(cont2)}
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t.server.switch_grammar(o.method,cont1)
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}
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else
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t.update_translations()
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}
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}
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Translator.prototype.update_translations=function() {
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var t=this
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var doc=t.document
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var o=doc.options
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var ss=doc.segments
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var ds=t.drawing.segments
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function supported(concname) {
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var l=t.grammar_info.languages
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for(var i in l) if(l[i].name==concname) return true
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return false
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}
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function update_translation(i) {
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var segment=ss[i]
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function replace(sd) {
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var old=ds[i]
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ds[i]=sd
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replaceNode(sd,old)
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}
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function upd2(ts) {
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switch(ts.length) {
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case 1: segment.target=ts[0]; break;
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case 0: segment.target="[no translation]";break;
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default: segment.target="[ambiguous translation]"
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}
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segment.options=JSON.parse(JSON.stringify(o)) // no sharing!
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replace(t.draw_segment(segment,i))
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}
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function upd(translate_output) {
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//console.log(translate_output)
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var ts=collect_texts(translate_output[0].translations)
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upd2(ts)
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}
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var fs=supported(gfrom)
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var ts=supported(gto)
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if(fs && ts) {
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if(segment.options.method!="Manual"
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&& JSON.stringify(segment.options)!=JSON.stringify(o))
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t.server.translate({from:gfrom,to:gto,input:segment.source},upd)
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}
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else {
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var fn=concname(o.from)
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var tn=concname(o.to)
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var unsup=" is not supported by the grammar"
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var sup=" is supported by the grammar"
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var msg= fs ? tn+unsup : ts ? fn+unsup :
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"Neither "+fn+" nor "+tn+sup
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upd2(["["+msg+"]"])
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}
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}
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if(doc.options.method!="Manual") {
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var gname=t.grammar_info.name
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var gfrom=gname+o.from
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var gto=gname+o.to
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for(var i in ss) update_translation(i)
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}
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}
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Translator.prototype.extend_methods=function(grammars) {
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this.grammars=grammars
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var dl=element("methods")
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if(dl) for(var i in grammars) {
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dl.appendChild(wrap("dt",radiobutton("method",grammars[i],
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"GF: "+grammars[i],
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bind(this.change,this))))
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}
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update_radiobutton("method",this.document.options.method)
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}
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Translator.prototype.change=function(el) {
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var t=this
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var o=t.document.options;
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function update(field) {
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if(el.value!=o[field]) {
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o[field]=el.value
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t.redraw()
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}
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}
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switch(el.name) {
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case "method": update("method"); break;
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case "source": update("from"); break;
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case "target": update("to"); break;
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}
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}
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Translator.prototype.new=function(el) {
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hide_menu(el);
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this.current=null;
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this.local.put("current",null)
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this.document=empty_document()
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this.redraw();
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}
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Translator.prototype.browse=function(el) {
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hide_menu(el);
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var t=this
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function browse() {
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var ul=empty_class("ul","files")
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var pre=t.local.prefix+"/"
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for(var i in localStorage) {
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if(hasPrefix(i,pre)) {
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var name=i.substr(pre.length)
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var link=a(jsurl("translator.open('"+name+"')"),[text(name)])
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ul.appendChild(li(link))
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}
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}
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clear(t.view)
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t.view.appendChild(wrap("h2",text("Your translator documents")))
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t.view.appendChild(ul)
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t.current="/"
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t.local.put("current","/")
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}
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setTimeout(browse,100) // leave time to hide the menu first
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}
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Translator.prototype.open=function(name) {
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var t=this
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if(name) {
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var path="/"+name
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var document=t.local.get(path);
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if(document) {
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t.current=name;
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t.local.put("current",name)
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t.document=document;
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t.redraw();
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}
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else alert("No such document: "+name)
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}
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}
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Translator.prototype.save=function(el) {
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hide_menu(el);
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if(this.current!="/") {
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if(this.current) this.local.put("/"+this.current,this.document)
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else this.saveAs()
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}
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}
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Translator.prototype.saveAs=function(el) {
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hide_menu(el);
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if(this.current!="/") {
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var name=prompt("File name?")
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if(name) {
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this.current=this.document.name=name;
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this.local.put("current",name)
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this.save();
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this.redraw();
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}
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}
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}
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Translator.prototype.close=function(el) {
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hide_menu(el);
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this.browse();
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}
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Translator.prototype.import=function(el) {
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hide_menu(el);
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var t=this
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function imp() {
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var text=prompt("Text segment to import?")
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if(text) {
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t.document.segments.push(new_segment(text))
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t.redraw();
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}
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}
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setTimeout(imp,100)
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}
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Translator.prototype.remove=function(el) {
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hide_menu(el);
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var t=this
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function rm() {
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if(t.document && t.document.segments.length>0) {
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t.document.segments.pop();
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t.redraw();
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}
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}
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setTimeout(rm,100)
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}
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Translator.prototype.edit_translation=function(i) {
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var t=this
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var ds=t.drawing.segments
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function replace_segment(sd) {
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var old=ds[i]
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ds[i]=sd
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replaceNode(sd,old)
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}
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function edit_segment(s) {
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function restore() { replace_segment(t.draw_segment(s,i)) }
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function done() {
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s.options.method="Manual"
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s.options.from=t.document.options.from
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s.options.to=t.document.options.to
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s.target=inp.value // side effect, updating the document in-place
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restore();
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return false;
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}
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var inp=node("input",{name:"it",value:s.target})
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var e=wrap("form",[inp, submit(), button("Cancel",restore)])
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var target=wrap_class("td","target",e)
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var edit=t.draw_segment_given_target(s,target)
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replace_segment(edit)
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e.onsubmit=done
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inp.focus();
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}
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edit_segment(t.document.segments[i])
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}
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function hide_menu(el) {
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function disp(s) { el.parentNode.style.display=s||""; }
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if(el) {
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disp("none")
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setTimeout(disp,500)
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}
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}
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/* --- Documents ------------------------------------------------------------ */
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/*
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type Document = { name:String, options: Options, segments:[Segment] }
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type Segment = { source:String, target:String, options:Options }
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type Options = {from: Lang, to: Lang, method:Method}
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type Lang = String // Eng, Swe, Ita, etc
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type Method = "Manual" | GrammarName
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type GrammarName = String // e.g. "Foods.pgf"
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*/
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Translator.prototype.draw_document=function() {
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var t=this
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var doc=t.document
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var o=doc.options;
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var segments=mapix(bind(t.draw_segment,t),doc.segments)
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var drawing=[node("h2",{},[text(doc.name),text(" "),
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wrap("small",draw_translation(o))]),
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wrap_class("table","segments",segments)]
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return {doc:drawing,segments:segments}
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}
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Translator.prototype.draw_segment=function(s,i) {
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var t=this
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var dopt=t.document.options
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var opt=s.options
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var txt=text(s.target)
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if(opt.from!=dopt.from || opt.to!=dopt.to) txt=span_class("error",txt)
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var target=wrap_class("td","target",txt)
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function edit() { t.edit_translation(i) }
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target.onclick=edit
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return t.draw_segment_given_target(s,target)
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}
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Translator.prototype.draw_segment_given_target=function(s,target) {
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var t=this
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function draw_options2(o) {
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function change(el) {
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o.method=el.value // side effect, updating the document in-place
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t.update_translations()
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}
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var manual=o.method=="Manual"
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var autoB=radiobutton("method","Auto","Auto",change,!manual)
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var manualB=radiobutton("method","Manual","Manual",change,manual)
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return wrap("form",
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[wrap("dt",autoB),
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wrap("dt",manualB),
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wrap("dt",draw_translation(o))])
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}
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function draw_options(o) {
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return wrap("div",[span_class("arrow",text(" ⇒ ")),
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wrap("dl",draw_options2(o))])
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}
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return wrap_class("tr","segment",
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[wrap_class("td","source",text(s.source)),
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wrap_class("td","options",draw_options(s.options)),
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target])
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}
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function empty_document() {
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return { name:"Unnamed",
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options: {from:"Eng", to:"Swe", method:"Manual"},
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segments:[] }
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}
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function new_segment(source) {
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return { source:source, target:"", options:{} } // leave options empty
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}
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function draw_translation(o) {
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return text("("+concname(o.from||"?")+" → "+concname(o.to||"?")+")")
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}
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/* --- Auxiliary functions -------------------------------------------------- */
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function lang(code,name) { return { code:code, name:name} }
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function lang1(name) {
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var ws=name.split("/");
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return ws.length==1 ? lang(name.substr(0,3),name) : lang(ws[0],ws[1]);
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}
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var languages =
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map(lang1,"Amharic Arabic Bulgarian Catalan Danish Dutch English Finnish French German Hindi Ina/Interlingua Italian Japanese Latin Norwegian Polish Ron/Romanian Russian Spanish Swedish Thai Turkish Urdu".split(" "));
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var langname={};
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for(var i in languages)
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langname[languages[i].code]=languages[i].name
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function concname(code) { return langname[code] || code; }
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function tr_local() {
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var prefix="gf.translator."
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function dummy() {
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return {
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prefix: prefix,
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get: function(name,def) { return def },
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put: function(name,value) { }
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}
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}
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function real() {
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return {
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prefix: prefix,
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get: function (name,def) {
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var id=prefix+name
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return localStorage[id] ? JSON.parse(localStorage[id]) : def;
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},
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put: function (name,value) {
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var id=prefix+name;
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localStorage[id]=JSON.stringify(value);
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}
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}
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}
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return window.localStorage ? real() : dummy()
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}
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// Collect alternative texts in the output from PGF service translate command
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function collect_texts(ts) {
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var list=[]
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for(var i in ts)
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for(var j in ts[i].linearizations) {
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var t=ts[i].linearizations[j].text
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if(!elem(t,list)) list.push(t) // avoid duplicates
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}
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return list
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}
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function mapix(f,xs) {
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var ys=[];
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for(var i in xs) ys.push(f(xs[i],i))
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return ys;
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}
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/* --- DOM Support ---------------------------------------------------------- */
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function a(url,linked) { return node("a",{href:url},linked); }
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function li(xs) { return wrap("li",xs); }
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function jsurl(js) { return "javascript:"+js; }
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function replaceNode(node,ref) { ref.parentNode.replaceChild(node,ref) }
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function radiobutton(name,value,label,change,checked) {
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var b=node("input",{type:"radio",name:name,value:value})
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if(change) b.onchange=function(event) { return change(event.target) }
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if(checked) b.checked=true
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return wrap("label",[b,text(label)])
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}
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function update_radiobutton(name,value) {
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var bs=document.forms.options[name]
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if(bs.length)
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for(var i in bs) if(bs[i].value==value) bs[i].checked=true
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}
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function submit(label) {
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return node("input",{type:"submit",value:label||"OK"})
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}
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Block a user