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/* See COPYING file for copyright, license and warranty details. */
if(window.content && window.content.document && window.content.document.simplyread_original === undefined) window.content.document.simplyread_original = false;
function simplyread(nostyle, nolinks)
{
/* count the number of <p> tags that are direct children of parenttag */
function count_p(parenttag)
{
var n = 0;
var c = parenttag.childNodes;
for (var i = 0; i < c.length; i++) {
if (c[i].tagName == "p" || c[i].tagName == "P")
n++;
}
return n;
}
var doc;
doc = (document.body === undefined)
? window.content.document : document;
/* if simplyread_original is set, then the simplyread version is currently active,
* so switch to the simplyread_original html */
if (doc.simplyread_original) {
doc.body.innerHTML = doc.simplyread_original;
for (var i = 0; i < doc.styleSheets.length; i++)
doc.styleSheets[i].disabled = false;
doc.simplyread_original = false
return 0;
}
doc.simplyread_original = doc.body.innerHTML;
doc.body.innerHTML = doc.body.innerHTML.replace(/<br[^>]*>\s*<br[^>]*>/g, "<p>");
var biggest_num = 0;
var biggest_tag;
/* search for tag with most direct children <p> tags */
var t = doc.getElementsByTagName("*");
for (var i = 0; i < t.length; i++) {
var p_num = count_p(t[i]);
if (p_num > biggest_num) {
biggest_num = p_num;
biggest_tag = t[i];
}
}
if (biggest_num == 0) return 1;
if (biggest_tag.childNodes[1].tagName != "H1")
biggest_tag.innerHTML = "<h1>"+doc.title+"</h1>"+biggest_tag.innerHTML;
/* save and sanitise content of chosen tag */
var fresh = doc.createElement("div");
fresh.innerHTML = biggest_tag.innerHTML;
fresh.innerHTML = fresh.innerHTML.replace(/<\/?font[^>]*>/g, "");
fresh.innerHTML = fresh.innerHTML.replace(/style="[^"]*"/g, "");
if(nolinks)
fresh.innerHTML = fresh.innerHTML.replace(/<\/?a[^>]*>/g, "");
fresh.innerHTML = fresh.innerHTML.replace(/<\/?span[^>]*>/g, "");
fresh.innerHTML = fresh.innerHTML.replace(/<style[^>]*>/g, "<style media=\"aural\">"); /* ensures contents of style tag are ignored */
for (var i = 0; i < doc.styleSheets.length; i++)
doc.styleSheets[i].disabled = true;
srstyle =
"p{margin:0ex auto;} h1,h2,h3,h4{font-weight:normal}" +
"p+p{text-indent:2em;} body{background:#cccccc none}" +
"img{display:block; max-width: 32em; padding:1em; margin: auto}" +
"h1{text-align:center;text-transform:uppercase}" +
"div#sr{width:34em; padding:2em 8em 50% 8em;" +
" background-color:white; margin:auto; line-height:1.4;" +
" text-align:justify; font-family:serif; hyphens:auto;}";
/* text-rendering:optimizeLegibility; - someday this will work,
* but at present it just ruins justify, so is disabled */
doc.body.innerHTML =
"<style type=\"text/css\">" + (nostyle ? "" : srstyle) + "</style>" +
"<div id=\"sr\">" + fresh.innerHTML + "</div>";
return 0;
}
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