//
// subscldr.js
//
// LICENSE: {{{
//   Copyright (c) 2009 snaka<snaka.gml@gmail.com>
//
//     Distributable under the terms of an MIT-style license.
//     http://www.opensource.jp/licenses/mit-license.html
// }}}
//
// PLUGIN INFO: {{{
var PLUGIN_INFO =
<VimperatorPlugin>
  <name>{NAME}</name>
  <description>Adds subscriptions to livedoor Reader/Fastladder in place.</description>
  <description lang="ja">ページ遷移なしでlivedoor ReaderやFastladderにフィードを登録します。</description>
  <minVersion>2.0pre</minVersion>
  <maxVersion>2.3</maxVersion>
  <require type="plugin">_libly.js</require>
  <updateURL>https://github.com/vimpr/vimperator-plugins/raw/master/subscldr.js</updateURL>
  <author mail="snaka.gml@gmail.com" homepage="http://vimperator.g.hatena.ne.jp/snaka72/">snaka</author>
  <license>MIT style license</license>
  <version>0.2.2</version>
  <detail><![CDATA[
    == Subject ==
    Adds subscriptions to livedoor Reader/Fastladder in place.

    == Commands ==
    >||
    :subscldr
    :subscfl
    ||<

  ]]></detail>

  <detail lang="ja"><![CDATA[
    == 概要 ==
    ページ遷移すること無しにlivedoor ReaderやFastladderへのフィードの登録を行います。

    == コマンド ==
    >||
    :subscldr
    :subscfl
    ||<

  ]]></detail>
</VimperatorPlugin>;
// }}}

liberator.plugins.subscldr = (function() {
  // PUBLIC {{{
  var PUBLICS = {
    // TODO:Provide API function.

    // for DEBUG {{{
    //getSubscription: getSubscription,
    //postSubscription: postSubscription,
    //selectFeed: selectFeed
    // }}}
  };

  // }}}
  // COMMAND {{{
  addCommand(
    ["subscldr", "subscrldr"],
    "livedoor Reader",
    "http://reader.livedoor.com/subscribe/"
  );

  addCommand(
    ["subscfl", "subscrfl"],
    "Fastladder",
    "http://fastladder.com/subscribe/"
  );
  // }}}
  // PRIVATE {{{
  function addCommand (command, servicename, endpoint) {

    function handleFeedRequest(opts, redirectUrl, force) {
        var subscribeInfo = getSubscription(redirectUrl);
        var availableLinks = subscribeInfo.feedlinks.filter(function(info) info[1]);
        var alreadySubscribed = availableLinks.length != subscribeInfo.feedlinks.length;

        if (alreadySubscribed && !force) {
          liberator.echo("This site has already been subscribed. Are you sure to want to add subscription?");
          commandline.input("Add? [y/N]:",
            function(ans) {
              if (ans.toLowerCase().indexOf("y") == 0) // /^y(?:es)?$/.test(ans.toLowerCase())
                handleFeedRequest(opts, null, true);
              else
                liberator.echo("Canceled.");
              commandline.close();
            }
          );
          return;
        }

        switch (availableLinks.length) {
        case 0:
          if (alreadySubscribed)
            liberator.echo("The feed of this site has already been subscribed.");
          else
            // Maybe never reach here.
            liberator.echoerr("SITE FEED NOT AVAILABLE!!!");
          break;
        case 1:
          liberator.log("FEED ONLY ONE!!");
          subscribeInfo.feedlinks = [availableLinks[0][0], true];
          postSubscription(subscribeInfo, opts);
          break;
        default:
          liberator.log("SOME FEED AVAILABLE");
          selectFeed( availableLinks.map(function(i) [i[0], i[2]]),
            function(sel) {
              liberator.log("SELECTED FEED:" + sel);
              liberator.echo("Redirected ...");
              var redirectUrl = endpoint + "?url=" + encodeURIComponent(sel);
              handleFeedRequest(opts, redirectUrl);
            }
          );
        }
    }

    function getSubscription(target) {
      liberator.echo("Please wait ...");
      var subscribeInfo;

      var uri = target || endpoint + buffer.URL;

      var req = new libly.Request(uri, null, {asynchronous: false});
      req.addEventListener("onSuccess", function(res) {
        liberator.log(res.responseText);
        res.getHTMLDocument();
        if (isLoginForm(res.doc)) throw "Please login to LDR to subscribe the feed.";
        subscribeInfo = getSubscribeInfo(res.doc);
        liberator.log(subscribeInfo.toSource());
      });
      req.get();

      return subscribeInfo;
    }

    function postSubscription(info, opts) {
      liberator.log("subscribe:" + info.toSource());

      var postBody= "url=" + encodeURIComponent(info.target_url) +
                    "&folder_id=0" +
                    "&rate=" + (opts.rate || "0") +
                    "&register=1" +
                    "&feedlink=" + encodeURIComponent(info.feedlinks[0]) +
                    "&public=1" +
                    "&ApiKey=" + info.apiKey;

      liberator.log("POST DATA:" + postBody);
      var req = new libly.Request(
        endpoint,
        null,
        {
          asyncronus: false,
          postBody: postBody
        }
      );
      req.addEventListener("onSuccess", function(data) {
        liberator.log("Post status: " + data.responseText);
        liberator.echo("Subscribe feed succeed.");
      });
      req.addEventListener("onFailure", function(data) {
        liberator.log("POST FAILURE: " + data.responseText);
        liberator.echoerr("POST FAILURE: " + data.statusText);
      });

      req.post();
    }

    commands.addUserCommand(
      command,
      "Register feed subscriptions to " + servicename + ".",
      function(args) {
        try {
          handleFeedRequest({rate: args["-rate"]});
        } catch (e) {
          liberator.echoerr(e);
        }
      },
      {
        options: [
          [["-rate", "-r"], commands.OPTION_INT]
        ]
      },
      true  // Use in DEVELOP
    );

  }

  function isLoginForm(htmldoc) {
    return htmldoc.getElementById('livedoor_id') &&
           htmldoc.getElementById('password');
  }

  function getSubscribeInfo(htmldoc) {
    var subscribeInfo = {
       target_url: null,
       register: 1,
       apiKey: null,
       feedlinks: []
    };

    $LXs('id("feed_candidates")/xhtml:li', htmldoc).forEach( function(item) {
      var feedlink = $LX('./xhtml:a[@class="feedlink"]', item);
      var title = $LX('./xhtml:a[@class="subscribe_list"]', item);
      var users = $LX('./xhtml:span[@class="subscriber_count"]/xhtml:a', item);
      var yet = $LX('./xhtml:input[@name="feedlink"]', item);
      liberator.log("input:" + feedlink.href);
      subscribeInfo.feedlinks.push([feedlink.href, (yet != null), (title ? title.textContent : '' ) + ' / ' + (users ? users.textContent :  '0 user')]);
    });

    var target_url = $LX('id("target_url")', htmldoc);
    if (!target_url) throw "Cannot find subscribe info about this page!";
    subscribeInfo.target_url = target_url.value;
    liberator.log("target_url:" + subscribeInfo.target_url);

    subscribeInfo.apiKey = $LX('//*[@name="ApiKey"]', htmldoc).value;
    if (!subscribeInfo.apiKey) throw "Can't get API key for subscription!";
    return subscribeInfo;
  }

  function selectFeed(links, next) {
    liberator.log(links.toSource());
    liberator.echo("Following feeds were found on this site. Which do you subscribe?");
    commandline.input("Select or input feed URL ", function(selected) {
      liberator.echo("You select " + selected + ".");
      commandline.close();
      if (next && typeof next == "function")
        next(selected);
      else
        liberator.echoerr("Your selected no is invalid.");
    },{
      completer: function(context) {
        context.title = ["Available feeds", "Title / users"];
        context.completions = links;
      }
    });
    // Open candidates list forcibly
    events.feedkeys("<TAB>");
  }

  // For convenience
  //function $LXs(a,b) libly.$U.getNodesFromXPath(a,b);
  //function $LX(a,b)  libly.$U.getFirstNodeFromXPath(a,b);

  function nsResolver(prefix) {
    var ns = { 'xhtml': 'http://www.w3.org/1999/xhtml' };
    return ns[prefix] || null;
  }

  function $LXs(a, b) {
    var ret = [];
    var res = (b.ownerDocument || b).evaluate(a, b, nsResolver, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0; i < res.snapshotLength; i++) {
      ret.push(res.snapshotItem(i));
    }
    return ret;
  }

  function $LX(a, b) {
    var res = (b.ownerDocument || b).evaluate(a, b, nsResolver, XPathResult.FIRST_ORDERED_NODE_TYPE, null);
    return res.singleNodeValue || null;
  }

  // }}}
  return PUBLICS;
})();

// vim:sw=2 ts=2 et si fdm=marker:
<span class="nx">takahashi</span><span class="o">-</span><span class="nx">method</span> <span class="nx">presentation</span> <span class="nx">tool</span><span class="o">&lt;</span><span class="err">/description&gt;</span>
    <span class="o">&lt;</span><span class="nx">author</span> <span class="nx">mail</span><span class="o">=</span><span class="s2">&#34;konbu.komuro@gmail.com&#34;</span> <span class="nx">homepage</span><span class="o">=</span><span class="s2">&#34;http://d.hatena.ne.jp/hogelog/&#34;</span><span class="o">&gt;</span><span class="nx">hogelog</span><span class="o">&lt;</span><span class="err">/author&gt;</span>
    <span class="o">&lt;</span><span class="nx">version</span><span class="o">&gt;</span><span class="mf">0.1</span><span class="p">.</span><span class="mi">1</span><span class="o">&lt;</span><span class="err">/version&gt;</span>
    <span class="o">&lt;</span><span class="nx">minVersion</span><span class="o">&gt;</span><span class="mf">2.3</span><span class="nx">pre</span><span class="o">&lt;</span><span class="err">/minVersion&gt;</span>
    <span class="o">&lt;</span><span class="nx">maxVersion</span><span class="o">&gt;</span><span class="mf">2.3</span><span class="nx">pre</span><span class="o">&lt;</span><span class="err">/maxVersion&gt;</span>
    <span class="o">&lt;</span><span class="nx">updateURL</span><span class="o">&gt;</span><span class="nx">http</span><span class="o">:</span><span class="c1">//svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk/takahashiPresentation.js&lt;/updateURL&gt;
</span><span class="c1"></span>    <span class="o">&lt;</span><span class="nx">date</span><span class="o">&gt;</span><span class="mi">2008</span><span class="o">/</span><span class="mi">12</span><span class="o">/</span><span class="mi">23</span> <span class="mi">09</span><span class="o">:</span><span class="mi">20</span><span class="o">:</span><span class="mi">07</span><span class="o">&lt;</span><span class="err">/date&gt;</span>
    <span class="o">&lt;</span><span class="nx">detail</span><span class="o">&gt;&lt;!</span><span class="p">[</span><span class="nx">CDATA</span><span class="p">[</span>

<span class="o">==</span> <span class="nx">COMMANDS</span> <span class="o">==</span>
<span class="nx">presentation</span><span class="o">:</span>
   <span class="nx">start</span> <span class="nx">presentation</span>
<span class="o">==</span> <span class="nx">HOWTO</span> <span class="o">==</span>
<span class="nx">open</span> <span class="nx">HTML</span> <span class="nx">file</span> <span class="nx">includes</span> <span class="o">&lt;</span><span class="nx">pre</span> <span class="nx">id</span><span class="o">=</span><span class="s2">&#34;page&#34;</span><span class="o">&gt;</span><span class="p">...</span><span class="o">&lt;</span><span class="err">/pre&gt; and &lt;div id=&#34;text&#34;&gt;...&lt;/div&gt;.</span>
<span class="nx">start</span> <span class="o">:</span><span class="nx">presentation</span><span class="p">.</span>
     <span class="p">]]</span><span class="o">&gt;&lt;</span><span class="err">/detail&gt;</span>
<span class="o">&lt;</span><span class="err">/VimperatorPlugin&gt;;</span>
<span class="c1">//}}}
</span><span class="c1"></span><span class="p">(</span><span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
    <span class="kd">let</span> <span class="nx">keys</span> <span class="o">=</span> <span class="p">[</span>
        <span class="p">[</span><span class="s1">&#39;&lt;Right&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;next page&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="nx">nextPage</span><span class="p">()],</span>
        <span class="p">[</span><span class="s1">&#39;&lt;Left&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;prev page&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="nx">prevPage</span><span class="p">()],</span>
        <span class="p">[</span><span class="s1">&#39;^&#39;</span><span class="p">,</span> <span class="s1">&#39;first page&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="nx">loadPage</span><span class="p">(</span><span class="mi">0</span><span class="p">)],</span>
        <span class="p">[</span><span class="s1">&#39;$&#39;</span><span class="p">,</span> <span class="s1">&#39;last page&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="nx">loadPage</span><span class="p">(</span><span class="nx">pages</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span><span class="p">)],</span>
        <span class="p">[</span><span class="s1">&#39;.&#39;</span><span class="p">,</span> <span class="s1">&#39;last page&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">(</span><span class="nx">count</span><span class="p">)</span> <span class="nx">loadPage</span><span class="p">(</span><span class="nx">count</span><span class="o">?</span><span class="nx">count</span><span class="o">-</span><span class="mi">1</span><span class="o">:</span><span class="mi">0</span><span class="p">),</span> <span class="p">{</span><span class="nx">count</span><span class="o">:</span> <span class="kc">true</span><span class="p">}],</span>
        <span class="p">[</span><span class="s1">&#39;q&#39;</span><span class="p">,</span> <span class="s1">&#39;stop presentation&#39;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="nx">stop</span><span class="p">()],</span>
    <span class="p">];</span>
    <span class="kd">let</span> <span class="nx">win</span><span class="p">;</span>
    <span class="kd">let</span> <span class="nx">doc</span><span class="p">;</span>
    <span class="kd">let</span> <span class="nx">pages</span> <span class="o">=</span> <span class="p">[];</span>
    <span class="kd">let</span> <span class="nx">curpage</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span>
    <span class="kd">let</span> <span class="nx">pre</span><span class="p">;</span>
    <span class="kd">let</span> <span class="nx">header</span><span class="p">;</span>
    <span class="kd">let</span> <span class="nx">fontSize</span> <span class="o">=</span> <span class="mf">18.0</span><span class="p">;</span>

    <span class="kd">function</span> <span class="nx">addKeys</span><span class="p">()</span> <span class="p">{</span>
        <span class="nx">keys</span><span class="p">.</span><span class="nx">forEach</span><span class="p">(</span><span class="kd">function</span><span class="p">([</span><span class="nx">key</span><span class="p">,</span> <span class="nx">desc</span><span class="p">,</span> <span class="nx">action</span><span class="p">,</span> <span class="nx">extra</span><span class="p">])</span>
            <span class="nx">mappings</span><span class="p">.</span><span class="nx">addUserMap</span><span class="p">([</span><span class="nx">modes</span><span class="p">.</span><span class="nx">NORMAL</span><span class="p">],</span> <span class="p">[</span><span class="nx">key</span><span class="p">],</span> <span class="nx">desc</span><span class="p">,</span> <span class="nx">action</span><span class="p">,</span> <span class="nx">extra</span><span class="p">));</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">fitPage</span><span class="p">()</span> <span class="p">{</span>
        <span class="k">if</span><span class="p">(</span><span class="nx">pre</span><span class="p">.</span><span class="nx">innerHTML</span><span class="o">==</span><span class="s1">&#39;&#39;</span><span class="p">)</span> <span class="k">return</span><span class="p">;</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">style</span><span class="p">.</span><span class="nx">display</span> <span class="o">=</span> <span class="s1">&#39;inline&#39;</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">parentWidth</span> <span class="o">=</span> <span class="nx">pre</span><span class="p">.</span><span class="nx">parentNode</span><span class="p">.</span><span class="nx">offsetWidth</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">parentHeight</span> <span class="o">=</span> <span class="nx">pre</span><span class="p">.</span><span class="nx">parentNode</span><span class="p">.</span><span class="nx">offsetHeight</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">width</span> <span class="o">=</span> <span class="nx">pre</span><span class="p">.</span><span class="nx">offsetWidth</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">height</span> <span class="o">=</span> <span class="nx">pre</span><span class="p">.</span><span class="nx">offsetHeight</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">preRatio</span> <span class="o">=</span> <span class="nx">width</span><span class="o">/</span><span class="nx">height</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">winRatio</span> <span class="o">=</span> <span class="nx">parentWidth</span><span class="o">/</span><span class="nx">parentHeight</span><span class="p">;</span>
        <span class="k">if</span><span class="p">(</span><span class="nx">preRatio</span><span class="o">&gt;</span><span class="nx">winRatio</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">fontSize</span> <span class="o">*=</span> <span class="mf">0.9</span><span class="o">*</span><span class="p">(</span><span class="nx">parentWidth</span><span class="o">-</span><span class="mi">10</span><span class="p">)</span><span class="o">/</span><span class="nx">width</span><span class="p">;</span>
        <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
            <span class="nx">fontSize</span> <span class="o">*=</span> <span class="mf">0.9</span><span class="o">*</span><span class="p">(</span><span class="nx">parentHeight</span><span class="o">-</span><span class="mi">10</span><span class="p">)</span><span class="o">/</span><span class="nx">height</span><span class="p">;</span>
        <span class="p">}</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">style</span><span class="p">.</span><span class="nx">fontSize</span> <span class="o">=</span> <span class="nx">fontSize</span><span class="o">+</span><span class="s1">&#39;px&#39;</span><span class="p">;</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">style</span><span class="p">.</span><span class="nx">display</span> <span class="o">=</span> <span class="s1">&#39;block&#39;</span><span class="p">;</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">loadPage</span><span class="p">(</span><span class="nx">page</span><span class="p">)</span> <span class="p">{</span>
        <span class="kd">let</span> <span class="nx">text</span> <span class="o">=</span> <span class="nx">pages</span><span class="p">[</span><span class="nx">page</span><span class="p">];</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">innerHTML</span> <span class="o">=</span> <span class="nx">text</span><span class="p">;</span>
        <span class="k">if</span><span class="p">(</span><span class="nx">header</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">header</span><span class="p">.</span><span class="nx">innerHTML</span> <span class="o">=</span> <span class="p">(</span><span class="nx">page</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span><span class="o">+</span><span class="s1">&#39;/&#39;</span><span class="o">+</span><span class="nx">pages</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
        <span class="p">}</span>
        <span class="nx">fitPage</span><span class="p">();</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">nextPage</span><span class="p">()</span> <span class="p">{</span>
        <span class="nx">curpage</span> <span class="o">=</span> <span class="nx">curpage</span><span class="o">&gt;=</span><span class="nx">pages</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span> <span class="o">?</span> <span class="mi">0</span> <span class="o">:</span> <span class="nx">curpage</span><span class="o">+</span><span class="mi">1</span><span class="p">;</span>
        <span class="nx">loadPage</span><span class="p">(</span><span class="nx">curpage</span><span class="p">);</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">prevPage</span><span class="p">()</span> <span class="p">{</span>
        <span class="nx">curpage</span> <span class="o">=</span> <span class="nx">curpage</span><span class="o">&lt;=</span><span class="mi">0</span> <span class="o">?</span> <span class="nx">pages</span><span class="p">.</span><span class="nx">length</span><span class="o">-</span><span class="mi">1</span> <span class="o">:</span> <span class="nx">curpage</span><span class="o">-</span><span class="mi">1</span><span class="p">;</span>
        <span class="nx">loadPage</span><span class="p">(</span><span class="nx">curpage</span><span class="p">);</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">parsePages</span><span class="p">(</span><span class="nx">text</span><span class="p">)</span> <span class="p">{</span>
        <span class="k">return</span> <span class="nx">text</span><span class="p">.</span><span class="nx">split</span><span class="p">(</span><span class="s1">&#39;----&#39;</span><span class="p">)</span>
                   <span class="p">.</span><span class="nx">map</span><span class="p">(</span><span class="kd">function</span><span class="p">(</span><span class="nx">txt</span><span class="p">)</span> <span class="nx">txt</span><span class="p">.</span><span class="nx">replace</span><span class="p">(</span><span class="sr">/^(?:\r\n|[\r\n])|(?:\r\n|[\r\n])$/g</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">));</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">save_setting</span><span class="p">(</span><span class="nx">setting</span><span class="p">)</span> <span class="p">{</span>
        <span class="nx">setting</span><span class="p">.</span><span class="nx">fullscreen</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">fullscreen</span><span class="p">;</span>
        <span class="nx">setting</span><span class="p">.</span><span class="nx">guioptions</span> <span class="o">=</span> <span class="nx">options</span><span class="p">.</span><span class="nx">guioptions</span><span class="p">;</span>
        <span class="c1">// TODO: save key mapping
</span><span class="c1"></span>        <span class="c1">//setting.mappings = keys.map(function([key,]) {
</span><span class="c1"></span>        <span class="c1">//    let mapping = mappings.get(modes.NORMAL, key);
</span><span class="c1"></span>        <span class="c1">//    return [mapping.modes, key, mapping.description, mapping.action, mapping.extra];
</span><span class="c1"></span>        <span class="c1">//});
</span><span class="c1"></span>    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">load_setting</span><span class="p">(</span><span class="nx">setting</span><span class="p">)</span> <span class="p">{</span>
        <span class="nx">options</span><span class="p">.</span><span class="nx">fullscreen</span> <span class="o">=</span> <span class="nx">setting</span><span class="p">.</span><span class="nx">fullscreen</span><span class="p">;</span>
        <span class="nx">options</span><span class="p">.</span><span class="nx">guioptions</span> <span class="o">=</span> <span class="nx">setting</span><span class="p">.</span><span class="nx">guioptions</span><span class="p">;</span>
        <span class="c1">// TODO: load key mapping
</span><span class="c1"></span>        <span class="c1">//setting.mappings.forEach(function([modes, key, desc, action, extra]) {
</span><span class="c1"></span>        <span class="c1">//    mappings.addUserMap(modes, [key], desc, action, extra);
</span><span class="c1"></span>        <span class="c1">//});
</span><span class="c1"></span>    <span class="p">}</span>
    <span class="kd">let</span> <span class="nx">original_setting</span> <span class="o">=</span> <span class="p">{};</span>
    <span class="kd">function</span> <span class="nx">start</span><span class="p">()</span> <span class="p">{</span>
        <span class="nx">save_setting</span><span class="p">(</span><span class="nx">original_setting</span><span class="p">);</span>

        <span class="nx">options</span><span class="p">.</span><span class="nx">fullscreen</span> <span class="o">=</span> <span class="kc">true</span><span class="p">;</span>
        <span class="nx">options</span><span class="p">.</span><span class="nx">guioptions</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span><span class="p">;</span>
        <span class="nx">win</span> <span class="o">=</span> <span class="nb">window</span><span class="p">.</span><span class="nx">content</span><span class="p">;</span>
        <span class="nx">doc</span> <span class="o">=</span> <span class="nx">win</span><span class="p">.</span><span class="nb">document</span><span class="p">;</span>
        <span class="kd">let</span> <span class="nx">text</span> <span class="o">=</span> <span class="nx">util</span><span class="p">.</span><span class="nx">evaluateXPath</span><span class="p">(</span><span class="s1">&#39;//div[@id=&#34;text&#34;]&#39;</span><span class="p">).</span><span class="nx">snapshotItem</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
        <span class="nx">pages</span> <span class="o">=</span> <span class="nx">parsePages</span><span class="p">(</span><span class="nx">text</span><span class="p">.</span><span class="nx">innerHTML</span><span class="p">);</span>
        <span class="nx">addKeys</span><span class="p">();</span>

        <span class="nx">header</span> <span class="o">=</span> <span class="nx">util</span><span class="p">.</span><span class="nx">evaluateXPath</span><span class="p">(</span><span class="s1">&#39;//*[@id=&#34;header&#34;]&#39;</span><span class="p">).</span><span class="nx">snapshotItem</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>

        <span class="nx">pre</span> <span class="o">=</span> <span class="nx">util</span><span class="p">.</span><span class="nx">evaluateXPath</span><span class="p">(</span><span class="s1">&#39;//pre[@id=&#34;page&#34;]&#39;</span><span class="p">).</span><span class="nx">snapshotItem</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">style</span><span class="p">.</span><span class="nx">fontSize</span> <span class="o">=</span> <span class="nx">fontSize</span><span class="o">+</span><span class="s1">&#39;px&#39;</span><span class="p">;</span>
        <span class="nx">pre</span><span class="p">.</span><span class="nx">style</span><span class="p">.</span><span class="nx">margin</span> <span class="o">=</span> <span class="s1">&#39;0px&#39;</span><span class="p">;</span>

        <span class="nx">loadPage</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span>
    <span class="p">}</span>
    <span class="kd">function</span> <span class="nx">stop</span><span class="p">()</span> <span class="p">{</span>
        <span class="nx">load_setting</span><span class="p">(</span><span class="nx">original_setting</span><span class="p">);</span>
    <span class="p">}</span>

    <span class="nx">commands</span><span class="p">.</span><span class="nx">add</span><span class="p">([</span><span class="s1">&#39;presentation&#39;</span><span class="p">],</span> <span class="s1">&#39;start presentation&#39;</span><span class="p">,</span> <span class="c1">//{{{
</span><span class="c1"></span>        <span class="kd">function</span><span class="p">(</span><span class="nx">args</span><span class="p">)</span> <span class="p">{</span>
            <span class="nx">start</span><span class="p">();</span>
        <span class="p">},</span>
        <span class="p">{</span>
            <span class="nx">argCount</span><span class="o">:</span> <span class="s1">&#39;0&#39;</span><span class="p">,</span>
        <span class="p">});</span> <span class="c1">//}}}
</span><span class="c1"></span>
<span class="p">})();</span>
<span class="c1">// vim: fdm=marker sw=4 ts=4 et:
</span></pre>