minibar: moved 2 reusable functions from minibar_translations.js to minibar_support.js

1 files changed, 32 insertions, 0 deletions

diff --git a/src/www/minibar/minibar_support.js b/src/www/minibar/minibar_support.js
index 412271842..1448df8a2 100644
--- a/src/www/minibar/minibar_support.js
+++ b/src/www/minibar/minibar_support.js
@@ -61,3 +61,35 @@ function open_popup(url,target) {
 }
 
 function opener_element(id) { with(window.opener) return element(id); }
+
+function supportsSVG() {
+    return document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1")
+}
+
+function speech_buttons(to3,to2,txt) {
+    var voices = window.speechSynthesis && window.speechSynthesis.getVoices() || []
+    var dvs = voices.filter(function(v){return v.default})
+    if(to2)
+	var pick=function (v) { return v.lang==to2 }
+    else {
+	var to2dash=alangcode(to3)+"-"
+	var pick=function(v) { return hasPrefix(v.lang,to2dash) }
+    }
+    function btn(v) {
+	var u=new SpeechSynthesisUtterance(txt)
+	u.lang=v.lang // how to use v.voiceURI or v.name?
+
+	function speak() {
+	    speechSynthesis.cancel()
+	    speechSynthesis.speak(u)
+	}
+	return button(v.lang,speak)
+    }
+    //console.log(voices.length,"voices")
+    var vs=dvs.filter(pick)
+    if(vs.length==0) vs=voices.filter(pick)
+    //console.log(vs.length,"voices for "+to3+" "+to2)
+    var btns=vs.map(btn)
+    //console.log(btns.length,"voice buttons")
+    return wrap("span",btns)
+}