instant_previews.js

let PLUGIN_INFO =
<VimperatorPlugin>
<name>instant previews</name>
<description>This script allows you to use Instant Viewer feature of Google Search with Vimperator.</description>
<version>0.1.0</version>
<author>zentooo</author>
<license>Creative Commons</license>
<detail><![CDATA[
    == Subject ==
    This script allows you use Google's Instant Viewer with Vimperator.
]]></detail>
</VimperatorPlugin>;

(function(lib, ly) {

  var searchReg = "www\.google\.co\.[a-z]{2}/search";

  commands.addUserCommand( ["instant"], "enable Google Instant Viewer plugin", function(args) {

      var tab = getBrowser().mCurrentTab,
          wrapped = tab.linkedBrowser.contentWindow.wrappedJSObject,
          event = wrapped.document.createEvent("MouseEvents"),
          vscs;

      tab.current = tab.current || -1;
      tab.first = tab.first || true;

      event.initMouseEvent("mouseover", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);

      mappings.addUserMap([modes.NORMAL], ["j"], "iterate search results", function() {

        vscs = wrapped.document.getElementsByClassName("vsc");

        if ( tab.current === -1 ) {

          if ( tab.first === true ) {
            event.initMouseEvent("click", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
            vscs[0].dispatchEvent(event);
            tab.first = false;
          }

          event.initMouseEvent("mouseover", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
          tab.offset = ly.getElementPosition(vscs[0]).top * 2;
          tab.current = 0;
        }
        else if ( tab.current < vscs.length - 1 ) {
          tab.current++;
          vscs[tab.current].dispatchEvent(event);
          buffer.scrollTo(0, ly.getElementPosition(vscs[tab.current]).top - tab.offset);
        }

      }, { matchingUrls: [ searchReg ] });


      mappings.addUserMap([modes.NORMAL], ["k"], "reverse iterate search results", function() {

        tab.offset = tab.offset || ly.getElementPosition(vscs[0]).top * 2;

        if ( tab.current > -1 ) {
          tab.current--;
          vscs = wrapped.document.getElementsByClassName("vsc");
          vscs[tab.current].dispatchEvent(event);
          buffer.scrollTo(0, ly.getElementPosition(vscs[tab.current]).top - tab.offset);
        }

      }, { matchingUrls: [ searchReg ] });


      mappings.addUserMap([modes.NORMAL], ["gg"], "go to the top", function() {

        tab.current = -1;
        buffer.scrollTo(0, 0);

      }, { matchingUrls: [ searchReg ] });


      mappings.addUserMap([modes.NORMAL], ["<C-m>"], "open tab.current item with a new tab", function() {

        var href = vscs[tab.current].attributes.getNamedItem("rawurl").nodeValue;
        lib.open(href, { where: lib.NEW_TAB });

      }, { matchingUrls: [ searchReg ] });

    }
  );

  autocommands.add("LocationChange", searchReg, ":instant");

})(liberator, liberator.plugins.libly.$U);