Wide Coverage Demo Web App: add segmentation

Click on sentences to choose among alternative translations.

1 files changed, 140 insertions, 93 deletions

diff --git a/src/www/js/wc.js b/src/www/js/wc.js
index 3ba34c64a..29236ecf0 100644
--- a/src/www/js/wc.js
+++ b/src/www/js/wc.js
@@ -1,6 +1,7 @@
 var wc={}
 wc.cnl="Phrasebook" // try this controlled natural language first
 wc.f=document.forms[0]
+wc.o=element("output")
 wc.e=element("extra")
 wc.p=element("pick")
 wc.serial=0
@@ -9,124 +10,167 @@ wc.delayed_translate=function() {
     function restart(){ if(wc.f.input.value!=wc.translating) wc.translate() }
     if(wc.timer) clearTimeout(wc.timer);
     wc.timer=setTimeout(restart,500)
+    var h=wc.f.input.scrollHeight,bh=document.body.clientHeight
+    if(h>bh) h=bh
+    if(wc.f.input.clientHeight<h) wc.f.input.style.height=h+15+"px"
+}
+
+wc.split_punct=function(s) {
+    return s.split(/([.!?]+[ \t\n]+|\n\n+|[ \t\n]*[-•*+#]+[ \t\n]+)/)
 }
 
 wc.translate=function() {
     var current= ++wc.serial
     var f=wc.f, e=wc.e, p=wc.p
+    var selected= -1
 
     function disable(yes) {
 	f.translate.disabled=yes
 	f.to.disabled=yes
-	f.swap.disabled=yes
+	if(f.swap) f.swap.disabled=yes
     }
     disable(true)
-    f.output.value=""
-    f.output.className=""
-    wc.r=[]
-    wc.current=0
-    wc.translating=f.input.value
+    clear(wc.o)
     clear(e)
     clear(p)
 
-    function show_error(msg) {
-	if(e) e.innerHTML="<span class=low_quality>Translation problem: "+msg+"</span>"
-	else {
-	    f.output.value="["+msg+"]"
-	    f.output.className="low_quality"
+    function translate_segment(si) {
+	var rs=[]
+	var current_pick=0
+	var get_more
+	var output=os[si].target
+
+	function show_error(msg) {
+	    //if(e) e.innerHTML="<span class=low_quality>Translation problem: "+msg+"</span>"
+	    //else
+	    {
+		replaceChildren(output,text("["+msg+"]"))
+		output.className="error"
+	    }
+	    disable(false)
 	}
-	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"
+	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}
 	    }
-	    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)
+	function show_pick(i) { return function() { show_trans(i); return false; } }
+	function show_picks() {
+	    clear(p)
+	    for(var i=0;i<rs.length;i++) {
+		p.appendChild(text(" "))
+		var pick=text(i+1) // +"⃝"
+		if(i!=current_pick) {
+		    var pick=node("a",{href:"#"},[pick])
+		    pick.onclick=pick.onmouseover=show_pick(i)
+		}
+		var q=trans_quality(rs[i]).quality
+		p.appendChild(span_class("pick "+q,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(),
+					       target:"google_translate"},
+					  [text("Google Translate")])))
+	    */
 	}
-	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 show_more() {
+	    selected=si
+	    var r=rs[current_pick]
+	    if(e) e.innerHTML=(r.prob||"")+"<br>"+r.tree
+	    if(wc.p /*&& rs.length>1*/) show_picks()
+	    //if(f.speak.checked) wc.speak(t.text,f.to.value)
+	    if(get_more) {
+		var f=get_more
+		get_more=null
+		f()
+	    }
+	}
+	output.onclick=show_more
 
-    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) {
-		    var r=tra[0]
-		    if(r.error!=undefined) show_error(tra[0].error)
-		    else if(r.linearizations) {
-			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)
+	function show_trans(i) {
+	    var r=rs[i]
+	    var t=trans_quality(r)
+	    replaceChildren(output,text(t.text))
+	    output.className=t.quality
+	    current_pick=i
+	    if(selected==si) show_more()
+	}
+
+	function showit(r,text) {
+	    if(text.length>0 && text[text.length-1]=="\n")
+		text=text.substr(0,text.length-1)
+	    rs.push(r)
+	    var j=rs.length-1
+	    rs[j].text=text
+	    if(current_pick==j) show_trans(j)
+	    else if(selected==si) show_picks()
+	    disable(false)
+	}
+	function trans(text,i) {
+	    function step3(tra) {
+		if(wc.serial==current) {
+		    if(tra.length>=1) {
+			var r=tra[0]
+			if(r.error!=undefined) show_error(tra[0].error)
+			else if(r.linearizations) {
+			    r.text=r.linearizations[0].text
+			    unlextext(r.text,function(text){showit(r,text)})
+			    if(wc.p && i<9) {
+				if(si==selected) trans(text,i+1)
+				else get_more=function() { trans(text,i+1) }
+			    }
+			}
+			else show_error("no linearizations")
 		    }
-		    else show_error("no linearizations")
+		    else if(i==0) show_error("Unable to translate")
 		}
-		else if(i==0) show_error("Unable to translate")
 	    }
+	    gftranslate.translate(text,f.from.value,f.to.value,i,1,step3)
 	}
-	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)})
+	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)
 	    }
-	    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(is[si],wc.cnl ? step2cnl : step2)
+    }
+    wc.translating=f.input.value
+    var is=wc.is=wc.split_punct(wc.translating+"\n")
+    var os=[]
+    for(var i=0;i<is.length;i++) {
+	if(i&1) { // punctiation
+	    wc.o.appendChild(span_class("punct",text(is[i])))
+	}
+	else { // segment
+	    var o=os[i]={target:span_class("placeholder",text(is[i]))}
+	    wc.o.appendChild(o.target)
+	    translate_segment(i)
 	}
-	wc.pgf_online.translate({from:wc.cnl+f.from.value,
-				 to:wc.cnl+f.to.value,
-				 input:text},
-				step3cnl,
-				function(){step2(text)})
     }
-    lextext(wc.translating,wc.cnl ? step2cnl : step2)
     return false;
 }
 
@@ -182,8 +226,11 @@ function init_languages() {
 }
 
 function init_speech() {
-    wc.speech=window.speechSynthesis && window.speechSynthesis.getVoices().length>0
-    if(wc.speech) element("speak").style.display="inline"
+    var speak=element("speak")
+    if(speak) {
+	wc.speech=window.speechSynthesis && window.speechSynthesis.getVoices().length>0
+	if(wc.speech) speak.style.display="inline"
+    }
 }
 
 init_languages()