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/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*************************************************************
*
* MathJax/jax/output/CommonHTML/autoload/maction.js
*
* Implements the CommonHTML output for <maction> elements.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2015-2017 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
var VERSION = "2.7.1";
var MML = MathJax.ElementJax.mml,
CHTML = MathJax.OutputJax.CommonHTML;
var currentTip, hover, clear;
//
// Add configuration for tooltips
//
var CONFIG = CHTML.config.tooltip = MathJax.Hub.Insert({
delayPost: 600, delayClear: 600,
offsetX: 10, offsetY: 5
},CHTML.config.tooltip||{});
MML.maction.Augment({
CHTMLtooltip: CHTML.addElement(document.body,"div",{id:"MathJax_CHTML_Tooltip"}),
toCommonHTML: function (node) {
var selected = this.Get("selection");
node = this.CHTMLcreateNode(node);
this.CHTML = CHTML.BBOX.empty();
this.CHTMLhandleStyle(node);
this.CHTMLhandleScale(node);
this.CHTMLaddChild(node,selected-1,{});
this.CHTML.clean();
this.CHTMLhandleSpace(node);
this.CHTMLhandleBBox(node);
this.CHTMLhandleColor(node);
var type = this.Get("actiontype");
if (this.CHTMLaction[type] && this.CHTMLaction.hasOwnProperty(type))
this.CHTMLaction[type].call(this,node,selected);
return node;
},
CHTMLcoreNode: function (node) {return this.CHTMLchildNode(node,0)},
//
// Implementations for the various actions
//
CHTMLaction: {
toggle: function (node,selection) {
this.selection = selection;
node.onclick = MathJax.Callback(["CHTMLclick",this,CHTML.jax]);
node.style.cursor = "pointer";
},
statusline: function (node,selection) {
node.onmouseover = MathJax.Callback(["CHTMLsetStatus",this]);
node.onmouseout = MathJax.Callback(["CHTMLclearStatus",this]);
node.onmouseover.autoReset = node.onmouseout.autoReset = true;
},
tooltip: function(node,selection) {
if (this.data[1] && this.data[1].isToken) {
node.title = node.alt = this.data[1].data.join("");
} else {
node.onmouseover = MathJax.Callback(["CHTMLtooltipOver",this,CHTML.jax]);
node.onmouseout = MathJax.Callback(["CHTMLtooltipOut",this,CHTML.jax]);
node.onmouseover.autoReset = node.onmouseout.autoReset = true;
}
}
},
//
// Handle a click on the maction element
// (remove the original rendering and rerender)
//
CHTMLclick: function (jax,event) {
this.selection++;
if (this.selection > this.data.length) this.selection = 1;
var hover = !!jax.hover;
jax.Update();
if (hover) {
var span = document.getElementById(jax.inputID+"-Span");
MathJax.Extension.MathEvents.Hover.Hover(jax,span);
}
return MathJax.Extension.MathEvents.Event.False(event);
},
//
// Set/Clear the window status message
//
CHTMLsetStatus: function (event) {
// FIXME: Do something better with non-token elements
this.messageID = MathJax.Message.Set
((this.data[1] && this.data[1].isToken) ?
this.data[1].data.join("") : this.data[1].toString());
},
CHTMLclearStatus: function (event) {
if (this.messageID) MathJax.Message.Clear(this.messageID,0);
delete this.messageID;
},
//
// Handle tooltips
//
CHTMLtooltipOver: function (jax,event) {
if (!event) event = window.event;
if (clear) {clearTimeout(clear); clear = null}
if (hover) clearTimeout(hover);
var x = event.pageX; var y = event.pageY;
if (x == null) {
x = event.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
y = event.clientY + document.body.scrollTop + document.documentElement.scrollTop;
}
var callback = MathJax.Callback(["CHTMLtooltipPost",this,jax,x+CONFIG.offsetX,y+CONFIG.offsetY])
hover = setTimeout(callback,CONFIG.delayPost);
},
CHTMLtooltipOut: function (jax,event) {
if (hover) {clearTimeout(hover); hover = null}
if (clear) clearTimeout(clear);
var callback = MathJax.Callback(["CHTMLtooltipClear",this,80]);
clear = setTimeout(callback,CONFIG.delayClear);
},
CHTMLtooltipPost: function (jax,x,y) {
hover = null; if (clear) {clearTimeout(clear); clear = null}
var tip = this.CHTMLtooltip;
tip.style.display = "block"; tip.style.opacity = "";
// tip.style.filter = CHTML.config.styles["#MathJax_CHTML_Tooltip"].filter;
if (this === currentTip) return;
tip.style.left = x+"px"; tip.style.top = y+"px";
tip.innerHTML = '<span class="mjx-chtml"><span class="mjx-math"></span></span>';
CHTML.getMetrics(jax);
try {this.data[1].toCommonHTML(tip.firstChild.firstChild)} catch(err) {
if (!err.restart) throw err;
tip.style.display = "none";
MathJax.Callback.After(["CHTMLtooltipPost",this,jax,x,y],err.restart);
return;
}
currentTip = this;
},
CHTMLtooltipClear: function (n) {
var tip = this.CHTMLtooltip;
if (n <= 0) {
tip.style.display = "none";
tip.style.opacity = tip.style.filter = "";
clear = null;
} else {
tip.style.opacity = n/100;
tip.style.filter = "alpha(opacity="+n+")";
clear = setTimeout(MathJax.Callback(["CHTMLtooltipClear",this,n-20]),50);
}
}
});
MathJax.Hub.Startup.signal.Post("CommonHTML maction Ready");
MathJax.Ajax.loadComplete(CHTML.autoloadDir+"/maction.js");
});
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