/*
* @title TOC
* @description ページ内の見出しから目次を生成（右上）。AutoPagerize対応。最近のブラウザでないと動きません。
* @include http://*
* @license MIT License
* @require
*/
(function () {
init(document);
[].forEach(frames, function (frame) {
try { init(frame.document); } catch (e) {}
});
function init(doc) {
var container, style;
if (container = doc.getElementById('bookmarklet_TOC')) {
container.parentNode.removeChild(container);
return;
}
container = doc.createElement('div');
container.id = 'bookmarklet_TOC';
container.appendChild(createTOC(doc));
doc.body.appendChild(container);
style = doc.createElement('style');
style.type = 'text/css';
style.textContent = [
'#bookmarklet_TOC { background: rgba(0,0,0,0.9); color: #fff;',
'text-align: left; font: 90%/1.5 sans-serif;',
'width: 30px; height: 30px; z-index: 256;',
'max-width: 600px; max-height: 600px; overflow-y: auto;',
'position: fixed; top: 0; right: 0; margin: 0; padding: 0;',
'-moz-border-radius: 0 0 0 8px; border-radius: 0 0 0 8px; }',
'#bookmarklet_TOC:hover { width: auto; height: auto;',
'padding: 1ex 1em; }',
'#bookmarklet_TOC ol { list-style: none; display: none;',
'margin: 0; padding: 0; }',
'#bookmarklet_TOC ol ol { margin-left: 1.5em; }',
'#bookmarklet_TOC:hover ol { display: block; }',
'#bookmarklet_TOC span:hover { cursor: pointer; ',
'text-decoration: underline; }'].join('\n');
doc.querySelector('head').appendChild(style);
doc.addEventListener('AutoPagerize_DOMNodeInserted', function (e) {
container.appendChild(createTOC(e.target));
}, false);
}
function createTOC(root) {
var doc = root.ownerDocument || root;
var r = l = doc.createElement('ol');
var c = [,0,0,0,0,0,0];
var ln = 1;
[].forEach.call(
root.querySelectorAll('h1,h2,h3,h4,h5,h6'),
function (h) {
var n = h.nodeName[1];
var d = ln - n;
if (ln < n)
while (d++)
l = (l.hasChildNodes()
? l.lastChild
: l.appendChild(doc.createElement('li'))
).appendChild(doc.createElement('ol'));
else if (n < ln)
while (d--)
l = l.parentNode.parentNode;
var s = l.appendChild(doc.createElement('li'))
.appendChild(doc.createElement('span'));
s.appendChild(doc.createTextNode(h.textContent || ''));
s.addEventListener('click', function () {
h.scrollIntoView();
}, false);
ln = n;
}
);
return r;
}
})();
