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/*** BEGIN LICENSE BLOCK {{{
Copyright (c) 2009 hogelog<konbu.komuro@gmail.com>
Released under the GPL license
http://www.gnu.org/copyleft/gpl.html
}}} END LICENSE BLOCK ***/
// PLUGIN_INFO//{{{
var PLUGIN_INFO =
<VimperatorPlugin>
<name>{NAME}</name>
<description>marker PageDown/PageUp.</description>
<author mail="konbu.komuro@gmail.com" homepage="http://d.hatena.ne.jp/hogelog/">hogelog</author>
<version>0.0.1</version>
<license>GPL</license>
<minVersion>2.1pre</minVersion>
<maxVersion>2.1pre</maxVersion>
<updateURL>http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk/marker_reader.js</updateURL>
<detail><![CDATA[
== TODO ==
enable setting:
]]></detail>
</VimperatorPlugin>;
//}}}
(function() {
const HTML_NAMESPACE = "http://www.w3.org/1999/xhtml";
let libly = liberator.plugins.libly;
let $U = libly.$U;
let pageNaviCss =
<style type="text/css"><![CDATA[
.vimperator-marker_reader-marker {
background-color: #faa;
opacity: 0.30;
margin: 0px;
/*padding: 10px;*/
height: 1.5em;
width: 100%;
font-weight: bold;
text-align: left;
position: absolute;
-moz-border-radius: 5px;
}
]]></style>;
function insertMarkers(doc)
{
let win = doc.defaultView;
doc.naviMarker = true;
let css = $U.xmlToDom(pageNaviCss, doc);
let node = doc.importNode(css, true);
doc.body.insertBefore(node, doc.body.firstChild);
let scroll_ratio = parseFloat(liberator.globalVariables.marker_reader_scroll_ratio) || 0.7;
let scroll = win.innerHeight * scroll_ratio;
let count = Math.ceil(win.scrollMaxY / scroll);
for (let pageNum=1;pageNum<=count+1;++pageNum)
{
let p = doc.createElementNS(HTML_NAMESPACE, "p");
let id = "vimperator-marker_reader-" + pageNum;
p.id = id;
p.innerHTML = '<a href="#' + id + '">' + pageNum + "</a>";
p.className = "vimperator-marker_reader-marker";
p.style.left = 0;
p.style.top = (pageNum-1)*scroll;
p.style.zIndex = 1000;
doc.body.appendChild(p);
}
}
function removeMarkers(doc)
{
let xpath = '//*[@class="vimperator-marker_reader-marker"]';
let markers = $U.getNodesFromXPath(xpath, doc);
for (let i=0,len=markers.length;i<len;++i)
{
doc.body.removeChild(markers[i]);
}
}
function currentPage(doc)
{
let xpath = '//*[@class="vimperator-marker_reader-marker"]';
let markers = $U.getNodesFromXPath(xpath, doc);
let win = doc.defaultView;
var curPos = win.scrollY;
// top of page
if (curPos <= 0) return 1.0;
// bottom of page
if (curPos >= win.scrollMaxY) {
if (markers.length > 0) {
let lastMarker = Math.round(parseFloat(markers[markers.length-1].style.top));
if (curPos <= lastMarker) return markers.length;
}
return markers.length + 0.5;
}
// return n.5 if between n and n+1
var page = 1.0;
for (let i=0,len=markers.length;i<len;++i)
{
let pos = Math.round(parseFloat(markers[i].style.top));
if (curPos == pos) return page;
if (curPos < pos) return page - 0.5;
++page;
}
return page - 0.5;
}
function focusNavi(doc, count)
{
if (!doc.naviMarker) {
insertMarkers(doc);
}
let win = doc.defaultView;
let curPage = currentPage(doc);
let page = (count < 0 ? Math.round : Math.floor)(curPage + count);
if (page <= 1) {
win.scrollTo(0, 0);
return true;
}
let id_xpath = '//*[@id="vimperator-marker_reader-' + page + '"]';
let [elem] = $U.getNodesFromXPath(id_xpath, doc);
if (elem) {
let p = $U.getElementPosition(elem);
win.scrollTo(0, p.top);
return true;
}
// reload markers
removeMarkers(doc);
insertMarkers(doc);
[elem] = $U.getNodesFromXPath(id_xpath, doc);
if (elem) {
let p = $U.getElementPosition(elem);
win.scrollTo(0, p.top);
return true;
}
win.scrollTo(0, win.scrollMaxY);
return true;
}
commands.addUserCommand(["markernext", "mnext"], "marker PageDown",
function ()
{
focusNavi(content.document, 1);
});
commands.addUserCommand(["markerprev", "mprev"], "marker PageUp",
function ()
{
focusNavi(content.document, -1);
});
})();
// vim: fdm=marker sw=4 ts=4 et:
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