suzanne.soy/scribble-mathjax
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Refactor code to make a separate configuration section with dynamically generated stylesheet. Use a class for the added MathML rather than explicit CSS.

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This commit is contained in:
Davide P. Cervone 2015-07-23 16:40:18 -04:00
parent d8357a2d03
commit f0cc437b1e
1 changed files with 55 additions and 42 deletions
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93
unpacked/extensions/AssistiveMML.js
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@ -26,10 +26,55 @@
*/ */
(function (AJAX,CALLBACK,HUB,HTML) { (function (AJAX,CALLBACK,HUB,HTML) {
var SETTINGS = HUB.config.menuSettings;
var AssistiveMML = MathJax.Extension["AssistiveMML"] = { var AssistiveMML = MathJax.Extension["AssistiveMML"] = {
version: "2.6", version: "2.6",
config: {
disabled: false,
styles: {
".MJX_Assistive_MathML": {
position:"absolute!important",
clip: (HUB.Browser.isMSIE && (document.documentMode||0) < 8 ?
"rect(1px 1px 1px 1px)" : "rect(1px, 1px, 1px, 1px)"),
padding: "1px 0 0 0!important",
border: "0!important",
height: "1px!important",
width: "1px!important",
overflow: "hidden!important",
display:"block!important"
}
}
},
Config: function () {
if (!this.config.disabled && SETTINGS.assistiveMML == null)
HUB.Config({menuSettings:{assistiveMML:true}});
AJAX.Styles(this.config.styles);
HUB.Register.MessageHook("End Math",function (msg) {AssistiveMML.EndMathHook(msg[1])});
},
//
// The hook for the End Math signal.
// This sets up a state object that lists the jax and index into the jax,
// and a dummy callback that is used to synchronizing with MathJax.
// It will be called when the jax are all processed, and that will
// let the MathJax queue continue (it will block until then).
//
EndMathHook: function (node) {
if (!SETTINGS.assistiveMML) return;
var state = {
jax: HUB.getAllJax(node), i: 0,
callback: MathJax.Callback(function () {
console.log("MathML time: "+((new Date().getTime())-state.start));
}),
start: new Date().getTime()
};
this.HandleMML(state);
return state.callback;
},
// //
// For each jax in the state, look up the frame. // For each jax in the state, look up the frame.
// If the jax doesn't use NativeMML and hasn't already been handled: // If the jax doesn't use NativeMML and hasn't already been handled:
@ -52,64 +97,32 @@
return MathJax.Callback.After(["HandleMML",this,state],err.restart); return MathJax.Callback.After(["HandleMML",this,state],err.restart);
} }
frame.setAttribute("data-mathml",mml); frame.setAttribute("data-mathml",mml);
span = HTML.Element("span",{ span = HTML.addElement(frame,"span",{
isMathJax: true, isMathJax: true, className: "MJX_Assistive_MathML"
style:{
position:"absolute",
clip: (HUB.Browser.isMSIE && (document.documentMode||0) < 8 ?
"rect(1px 1px 1px 1px)" : "rect(1px, 1px, 1px, 1px)"),
padding: "1 0 0 0",
border: "0",
height: "1px",
width: "1px",
overflow: "hidden",
display:"block"
}
}); });
span.innerHTML = mml; span.innerHTML = mml;
frame.appendChild(span);
} }
state.i++; state.i++;
} }
state.callback(); state.callback();
},
//
// The hook for the End Math signal.
// This sets up a state object that lists the jax and index into the jax,
// and a dummy callback that is used to synchronizing with MathJax.
// It will be called when the jax are all processed, and that will
// let the MathJax queue continue (it will block until then).
//
EndMathHook: function (node) {
var state = {
jax: HUB.getAllJax(node), i: 0,
callback: MathJax.Callback(function () {
console.log("MathML time: "+((new Date().getTime())-state.start));
}),
start: new Date().getTime()
};
this.HandleMML(state);
return state.callback;
} }
}; };
//
// Call the hook when math has been processed.
//
HUB.Register.MessageHook("End Math",function (msg) {AssistiveMML.EndMathHook(msg[1])});
HUB.Startup.signal.Post("AssistiveMML Ready"); HUB.Startup.signal.Post("AssistiveMML Ready");
})(MathJax.Ajax,MathJax.Callback,MathJax.Hub,MathJax.HTML); })(MathJax.Ajax,MathJax.Callback,MathJax.Hub,MathJax.HTML);
// //
// Make sure the toMathML extension is loaded before we signal // Make sure the toMathML extension is loaded before we signal
// the load complete for this extension. // the load complete for this extension. Then wait for the end
// of the user configuration before configuring this extension.
// //
MathJax.Callback.Queue( MathJax.Callback.Queue(
["Require",MathJax.Ajax,"[MathJax]/extensions/toMathML.js"], ["Require",MathJax.Ajax,"[MathJax]/extensions/toMathML.js"],
["loadComplete",MathJax.Ajax,"[MathJax]/extensions/AssistiveMML.js"] ["loadComplete",MathJax.Ajax,"[MathJax]/extensions/AssistiveMML.js"],
function () {
MathJax.Hub.Register.StartupHook("End Config",["Config",MathJax.Extension.AssistiveMML]);
}
); );