* add marker_reader.js: insert marker to page.

git-svn-id: http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk@32303 d0d07461-0603-4401-acd4-de1884942a52

1 files changed, 161 insertions, 0 deletions

diff --git a/marker_reader.js b/marker_reader.js
new file mode 100644
index 0000000..89626f2
--- /dev/null
+++ b/marker_reader.js
@@ -0,0 +1,161 @@
+/*** 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: