/**
 *  Plugin detection framework, Version 0.2
 *  (c) 2005 Matthias Platzer <matthias@knallgrau.at>
 *
 *  inspired by Prototype JavaScript framework
 *
 *  This code is freely distributable under the terms of an MIT-style license.
 *
 *  For details, see the Prototype web site: http://www.knallgrau.code/prototype/plugins_js
 *
 *  Provides the following functions
 *    // name accepts: Acrobat, AdobeSVG, QuickTime, Director, WMV, Flash, Java, RealPlayer, VLC
 *    Plugin.isInstalled(String name)
 *    Plugin.getVersion(String name)
 *    Plugin.getPluginsForMimeType(String mimeType)  // returns Array of Plugin Names
 *    Plugin.getPluginsForFileSuffix(String suffix)  // returns Array of Plugin Names
 *    Plugin.getInfo(String name)
 *      // Result Object contains informations about the plugin
 *      Boolean isInstalled
 *      String  version
 *      String  description
 *      Array   progID        to be used with new ActiveXObject()
 *      String  classID       for ActiveX
 *      String  downloadURL   URL to download the plugin
 *      Array   acceptedMimeTypes  provides MimeType info for IE
 *
 * CHANGELOG:
 * 17.12.2005: Version 0.1
 *   initial version
 * 18.12.2005: Version 0.2
 *   added mimetypes for divx & co.
 *   added VLC support (detection for IE is missing)
 *   renamed getPluginsForMimeType, getPluginsForFileSuffix -> returns Array, instead of String
 *   dropped support vor Adobe SVG (IE)
 *   tested and debugged RealPlayer -> still reports a strange version number
 *   fixed bugs where script did break on unknown name attribute
 *   added experimental Plugin.embed
 *
/*--------------------------------------------------------------------------*/

PluginFactory = function() {

  // Returns if plugin with identifier name is installed
  // accepts: Acrobat, AdobeSVG, QuickTime, Director, WMV, Flash, Java, RealPlayer
  this.isInstalled = function(name) {
    return Plugin.getInfo(name).isInstalled;
  }

  // Returns version number of plugin if available
  this.getVersion = function(name) {
    return Plugin.getInfo(name).version;
  }

  // Returns an identifier name for a plugin, that can handle a mimeType
  this.getPluginsForMimeType = function(mimeType) {
    var result = [];
    if (supportsNavigatorPlugins()) {
      // navigator.mimeTypes
      for (var i=0; i<navigator.mimeTypes.length; i++) {
        if (navigator.mimeTypes[i].type.indexOf(mimeType) == 0 && navigator.mimeTypes[i].enabledPlugin) {
          var pluginName = (findPluginName(navigator.mimeTypes[i].enabledPlugin.name) || navigator.mimeTypes[i].enabledPlugin.name);
          if (!Array.contains(result, pluginName)) result.push(pluginName);
        }
      }
    } else {
      // Code for IE using ActiveX
      for (var pluginName in Plugin.PLUGINS) {
        var mimeTypes = Plugin.PLUGINS[pluginName].acceptedMimeTypes;
        for (var j=0; j<mimeTypes.length; j++) {
          if (mimeTypes[j].type.indexOf(mimeType) == 0 && Plugin.isInstalled(pluginName)) {
            if (!Array.contains(result, pluginName)) result.push(pluginName);
          }
        }
      }
    }
    return result;
  }

  // Returns an identifier name for a plugin, that can handle a file with this suffix
  this.getPluginsForFileSuffix = function(suffix) {
    var result = [];
    if (supportsNavigatorPlugins()) {
      // navigator.mimeTypes
      for (var i=0; i<navigator.mimeTypes.length; i++) {
        if ((","+navigator.mimeTypes[i].suffixes+",").indexOf(","+suffix+",") != -1 && navigator.mimeTypes[i].enabledPlugin) {
          var pluginName = (findPluginName(navigator.mimeTypes[i].enabledPlugin.name) || navigator.mimeTypes[i].enabledPlugin.name);
          if (!Array.contains(result, pluginName)) result.push(pluginName);
        }
      }
    } else {
      // Code for IE using ActiveX
      for (var pluginName in Plugin.PLUGINS) {
        var mimeTypes = Plugin.PLUGINS[pluginName].acceptedMimeTypes;
        for (var j=0; j<mimeTypes.length; j++) {
          if ((","+mimeTypes[j].suffixes+",").indexOf(","+suffix+",") != -1 && Plugin.isInstalled(pluginName)) {
            if (!Array.contains(result, pluginName)) result.push(pluginName);
          }
        }
      }
    }
    return result;
  }

  // Returns general information about a plugin with identifier name is installed
  this.getInfo = function(name) {

    var info = Plugin.PLUGINS[name];
    var isInstalled = false;
    var version = null;

    if (supportsNavigatorPlugins()) {
      // navigator.plugins
      var plugin = findNavigatorPluginByName((name == "RealPlayer") ? "RealPlayer Version Plugin" : name);
      if (plugin) {
        isInstalled = true;
        version = getVersionFromPlugin(plugin);
      }

    } else {
      // Code for IE using ActiveX
      isInstalled = hasActiveXObject(Plugin.PLUGINS[name] && Plugin.PLUGINS[name].progID);
      if (isInstalled) {
        if (Plugin.PLUGINS[name].getActiveXVersionInfo) {
          version = Plugin.PLUGINS[name].getActiveXVersionInfo();
        } else {
          // assume that the progID contains the version number
          // this is not always correct
          var progID = getProgIdForActiveXObject(Plugin.PLUGINS[name].progID);
          version = getVersionFromPlugin(progID);
        }
      } else {
        version = getActiveXPluginByClassId(Plugin.PLUGINS[name] && Plugin.PLUGINS[name].classID);
        if (version) version = version.replace(/,/g, ".");
        isInstalled = (version!=undefined && version!=null && version!="");
      }
    }

    var result = {};
    for (var i in info) {
      result[i] = info[i];
    }
    result["isInstalled"] = isInstalled;
    result["version"] = version;
    result["name"] = name;

    return result;
  }

  this.embed = function(plugin, options, target) {
    var options = options || {};

    var embedOptions = Object.extend({}, options);
    var src = embedOptions.src;
    var width = embedOptions.width;
    var height = embedOptions.height;
    delete embedOptions.src;
    delete embedOptions.width;
    delete embedOptions.height;
    delete embedOptions.plugin;

    switch (plugin) {
      case "QuickTime":
        // prepare attributes for embed tag
        var embedOptions = Object.extend({
          autoplay: "false",
          type: "video/quicktime"
        }, embedOptions);
        if (embedOptions.controller == "true" && (height+"").indexOf("%") == -1) {
          height += 16;
        }

        // prepare html code
        var html = "";
        if (supportsNavigatorPlugins()) {
          // Netscape Plugin embed Tag
          html += '<embed src="'+src+'" width="'+width+'" height="'+height+'" pluginspage="http://www.apple.com/quicktime/download/"';
          for (var i in embedOptions) {
            html += ' '+i+'="'+embedOptions[i]+'"';
          }
          html += '></embed>\n';
        } else {
          // ActiveX object tag
          html += '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"';
          html += ' width="'+width+'" height="'+height+'" codebase="http://www.apple.com/qtactivex/qtplugin.cab#version=6,0,2,0">\n';
          html += '  <param name="src" value="'+src+'">\n';
          for (var i in embedOptions) {
            html += '  <param name="'+i+'" value="'+embedOptions[i]+'">';
          }
          html += '</object>\n';
        }
        break;

      case "Windows Media":
        // prepare attributes for embed tag
        var embedOptions = Object.extend({
          autoplay: "false"
        }, embedOptions);
        if ((height+"").indexOf("%") == -1) {
          height += 45;
        }

        // prepare html code
        var html = "";
        if (supportsNavigatorPlugins()) {
          // Netscape Plugin embed Tag
          html += '<embed src="'+src+'" width="'+width+'" height="'+height+'" pluginspage = "http://www.microsoft.com/Windows/MediaPlayer/" type="application/x-mplayer2"';
          for (var i in embedOptions) {
            html += ' '+i+'="'+embedOptions[i]+'"';
          }
          html += '></embed>\n';
        } else {
          // ActiveX object tag
          html += '<object classid="CLSID:22D6F312-B0F6-11D0-94AB-0080C74C7E95"';
          html += ' width="'+width+'" height="'+height+'" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=6,0,02,902" type="application/x-oleobject">\n';
          html += '  <param name="src" value="'+src+'">\n';
          for (var i in embedOptions) {
            html += '  <param name="'+i+'" value="'+embedOptions[i]+'">';
          }
          html += '</object>\n';
        }
        break;

      default:
        // do nothing
        break;
    }
    if (target) {
      target.innerHTML = html;
    } else {
      document.write(html);
    }
  }

  // Info about known plugins
  this.PLUGINS = {
    "Acrobat": {
      description: "Adobe Acrobat Plugin",
      progID: ["PDF.PdfCtrl.7", "PDF.PdfCtrl.6", "PDF.PdfCtrl.5", "PDF.PdfCtrl.4", "PDF.PdfCtrl.3", "AcroPDF.PDF.1"],
      classID: "{CA8A9780-280D-11CF-A24D-444553540000}",
      downloadURL: "http://www.adobe.com/products/acrobat/readstep2.html",
      acceptedMimeTypes: [
        { type: "application/pdf", suffixes: "pdf" },
        { type: "application/vnd.fdf", suffixes: "fdf" },
        { type: "application/vnd.adobe.xfdf", suffixes: "xfdf" },
        { type: "application/vnd.adobe.xdp+xml", suffixes: "xdp" },
        { type: "application/vnd.adobe.xfd+xml", suffixes: "xfd" }
      ]
    },
    "QuickTime": {
      description: "QuickTime Plug-in",
      progID: ["QuickTimeCheckObject.QuickTimeCheck.1", "QuickTime.QuickTime"],
      classID: "{02BF25D5-8C17-4B23-BC80-D3488ABDDC6B}",
      // embedInfo: http://www.apple.com/quicktime/tutorials/embed.html
      //            http://developer.apple.com/quicktime/compatibility.html
      downloadURL: "http://www.apple.com/quicktime/",
      getActiveXVersionInfo: function() {
        var progID = getProgIdForActiveXObject(Plugin.PLUGINS["QuickTime"].progID);
        var obj = new ActiveXObject(progID);
        var version = (obj && obj.QuickTimeVersion) ? obj.QuickTimeVersion.toString(16) : "";
        return version.substring(0,1) + '.' + version.substring(1,2) + '.' + version.substring(2,3);
      },
      acceptedMimeTypes: [
        { type: "image/tiff", suffixes: "tif,tiff" },
        { type: "image/x-tiff", suffixes: "tif,tiff" },
        { type: "video/x-m4v", suffixes: "m4v" },
        { type: "image/x-macpaint", suffixes: "pntg,pnt,mac" },
        { type: "image/pict", suffixes: "pict,pic,pct" },
        { type: "image/x-pict", suffixes: "pict,pic,pct" },
        { type: "image/x-quicktime", suffixes: "qtif,qti" },
        { type: "image/x-sgi", suffixes: "sgi,rgb" },
        { type: "image/x-targa", suffixes: "targa,tga" },
        { type: "audio/3gpp", suffixes: "3gp,3gpp" },
        { type: "video/3gpp2", suffixes: "3g2,3gp2" },
        { type: "audio/3gpp2", suffixes: "3g2,3gp2" },
        { type: "video/sd-video", suffixes: "sdv" },
        { type: "application/x-mpeg", suffixes: "amc" },
        { type: "video/mp4", suffixes: "mp4" },
        { type: "audio/mp4", suffixes: "mp4" },
        { type: "audio/x-m4a", suffixes: "m4a" },
        { type: "audio/x-m4p", suffixes: "m4p" },
        { type: "audio/x-m4b", suffixes: "m4b" },
        { type: "video/mpeg", suffixes: "mpeg,mpg,m1s,m1v,m1a,m75,m15,mp2,mpm,mpv,mpa" },
        { type: "audio/mpeg", suffixes: "mpeg,mpg,m1s,m1a,mp2,mpm,mpa,m2a" },
        { type: "audio/x-mpeg", suffixes: "mpeg,mpg,m1s,m1a,mp2,mpm,mpa,m2a" },
        { type: "video/3gpp", suffixes: "3gp,3gpp" },
        { type: "audio/x-gsm", suffixes: "gsm" },
        { type: "audio/AMR", suffixes: "AMR" },
        { type: "audio/aac", suffixes: "aac,adts" },
        { type: "audio/x-aac", suffixes: "aac,adts" },
        { type: "audio/x-caf", suffixes: "caf" },
        { type: "video/x-mpeg", suffixes: "mpeg,mpg,m1s,m1v,m1a,m75,m15,mp2,mpm,mpv,mpa" },
        { type: "audio/aiff", suffixes: "aiff,aif,aifc,cdda" },
        { type: "audio/x-aiff", suffixes: "aiff,aif,aifc,cdda" },
        { type: "audio/basic", suffixes: "au,snd,ulw" },
        { type: "audio/mid", suffixes: "mid,midi,smf,kar" },
        { type: "audio/x-midi", suffixes: "mid,midi,smf,kar" },
        { type: "audio/midi", suffixes: "mid,midi,smf,kar" },
        { type: "audio/vnd.qcelp", suffixes: "qcp" },
        { type: "application/sdp", suffixes: "sdp" },
        { type: "application/x-sdp", suffixes: "sdp" },
        { type: "application/x-rtsp", suffixes: "rtsp,rts" },
        { type: "video/quicktime", suffixes: "mov,qt,mqv" },
        { type: "video/flc", suffixes: "flc,fli,cel" },
        { type: "audio/x-wav", suffixes: "wav,bwf" },
        { type: "audio/wav", suffixes: "wav,bwf" }
      ]
    },
    "Director": {
      description: "Macromedia Director",
      progID: ["SWCtl.SWCtl.11","SWCtl.SWCtl.10","SWCtl.SWCtl.9","SWCtl.SWCtl.8","SWCtl.SWCtl.7","SWCtl.SWCtl.6","SWCtl.SWCtl.5","SWCtl.SWCtl.4"],
      classID: "{166B1BCA-3F9C-11CF-8075-444553540000}",
      downloadURL: "http://www.macromedia.com/shockwave/download/",
      acceptedMimeTypes: [
        { type: "application/x-director", suffixes: "dir,dxr,dcr" }
      ]
    },
    "Flash": {
      description: "Macromedia Shockwave Flash",
      progID: ["ShockwaveFlash.ShockwaveFlash.9", "ShockwaveFlash.ShockwaveFlash.8.5", "ShockwaveFlash.ShockwaveFlash.8", "ShockwaveFlash.ShockwaveFlash.7", "ShockwaveFlash.ShockwaveFlash.6", "ShockwaveFlash.ShockwaveFlash.5", "ShockwaveFlash.ShockwaveFlash.4"],
      classID: "{D27CDB6E-AE6D-11CF-96B8-444553540000}",
      downloadURL: "http://www.macromedia.com/go/getflashplayer",
      // embedInfo: http://www.macromedia.com/cfusion/knowledgebase/index.cfm?id=tn_4150
      //            http://www.macromedia.com/cfusion/knowledgebase/index.cfm?id=tn_12701
      acceptedMimeTypes: [
        { type: "application/x-shockwave-flash", suffixes: "swf" },
        { type: "application/futuresplash", suffixes: "spl" }
      ]
    },
    "VLC": {
      description: "VLC multimedia plugin",
      progID: [],
      classID: "",
      downloadURL: "http://www.videolan.org/doc/play-howto/en/ch02.html#id287569",
      // embedInfo: http://www.videolan.org/doc/vlc-user-guide/en/ch07.html
      acceptedMimeTypes: [
        { type: "audio/mpeg", suffixes: "mp2,mp3,mpga,mpega" },
        { type: "audio/x-mpeg", suffixes: "mp2,mp3,mpga,mpega" },
        { type: "video/mpeg", suffixes: "mpg,mpeg,mpe" },
        { type: "video/x-mpeg", suffixes: "mpg,mpeg,mpe" },
        { type: "video/mpeg-system", suffixes: "mpg,mpeg,vob" },
        { type: "video/x-mpeg-system", suffixes: "mpg,mpeg,vob" },
        { type: "video/mpeg4", suffixes: "mp4,mpg4" },
        { type: "audio/mpeg4", suffixes: "mp4,mpg4" },
        { type: "application/mpeg4-iod", suffixes: "mp4,mpg4" },
        { type: "application/mpeg4-muxcodetable", suffixes: "mp4,mpg4" },
        { type: "video/x-msvideo", suffixes: "avi" },
        { type: "video/quicktime", suffixes: "mov,qt" },
        { type: "application/x-ogg", suffixes: "ogg" },
        { type: "application/x-vlc-plugin", suffixes: "*" },
        { type: "video/x-ms-asf-plugin", suffixes: "asf,asx,*" },
        { type: "video/x-ms-asf", suffixes: "asf,asx,*" },
        { type: "application/x-mplayer2", suffixes: "dvx,divx,ivx,xvid,ivf,*" },
        { type: "video/x-ms-wmv", suffixes: "wmv,*" },
        { type: "application/x-google-vlc-plugin", suffixes: "*" }
      ]
    },
    "Windows Media": {
      description: "Windows Media Player Plug-in Dynamic Link Library",
      progID: ["WMPlayer.OCX", "MediaPlayer.MediaPlayer.1"],
      classID: "{6BF52A52-394A-11D3-B153-00C04F79FAA6}", // WMP7+
      downloadURL: "http://www.microsoft.com/windows/windowsmedia/",
      // embedInfo: http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/samples/internet/imedia/netshow/crossbrowserembed/default.asp
      getActiveXVersionInfo: function() {
        var progID = getProgIdForActiveXObject(Plugin.PLUGINS["Windows Media"].progID);
        var obj = new ActiveXObject(progID);
        return (obj && obj.versionInfo) ? obj.versionInfo : "";
      },
      acceptedMimeTypes: [
        { type: "application/asx", suffixes: "*" },
        { type: "video/x-ms-asf-plugin", suffixes: "*" },
        { type: "application/x-mplayer2", suffixes: "dvx,divx,ivx,xvid,ivf,*" },
        { type: "video/x-ms-asf", suffixes: "asf,asx,*" },
        { type: "video/x-ms-wm", suffixes: "wm,*" },
        { type: "audio/x-ms-wma", suffixes: "wma,*" },
        { type: "audio/x-ms-wax", suffixes: "wax,*" },
        { type: "video/x-ms-wmv", suffixes: "wmv,*" },
        { type: "video/x-ms-wvx", suffixes: "wvx,*" }
      ]
    },
    "Java": {
      description: "Java Virtual Machine",
      progID: [],
      classID: "{08B0E5C0-4FCB-11CF-AAA5-00401C608500}",
      downloadURL: "http://www.java.com/de/download/manual.jsp",
      acceptedMimeTypes: [
        { type: "application/x-java-applet", suffixes: "" },
        { type: "application/x-java-bean", suffixes: "" },
        { type: "application/x-java-vm", suffixes: " " }
      ]
    },
    "RealPlayer": {
      description: "RealPlayer Version Plugin",
      progID: ["RealPlayer.RealPlayer(tm) ActiveX Control (32-bit)", "RealVideo.RealVideo(tm) ActiveX Control (32-bit)", "rmocx.RealPlayer G2 Control"],
      classID: "{CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA}",
      downloadURL: "http://www.real.com/freeplayer/?rppr=rnwk",
      // embedInfo: http://service.real.com/help/library/guides/realone/ProductionGuide/HTML/realpgd.htm?page=htmfiles/embed.htm
      getActiveXVersionInfo: function() {
        var progID = getProgIdForActiveXObject(Plugin.PLUGINS["RealPlayer"].progID);
        var obj = new ActiveXObject(progID);
        var version = (obj) ? obj.GetVersionInfo() : "";
        return version;
      },
      acceptedMimeTypes: [
        { type: "audio/x-pn-realaudio-plugin", suffixes: "rpm" },
        { type: "application/vnd.rn-realplayer-javascript", suffixes: "rpj" }
      ]
    }
  }

  var supportsNavigatorPlugins = function() {
    return (navigator.plugins && (navigator.plugins.length > 0));
  }

  var supportsActiveX = function() {
    return ((typeof 'ActiveXObject' != 'undefined') && (navigator.userAgent.indexOf('Win') != -1));
  }

  var findNavigatorPluginByName = function(name) {
    if (supportsNavigatorPlugins()) {
      for(var i=0;i<navigator.plugins.length;++i) {
        var plugin = navigator.plugins[i];
        if (plugin.name.indexOf(name) != -1) {
          return plugin;
        }
      }
    }
    return null;
  }

  var findPluginName = function(str) {
    for (var pluginName in Plugin.PLUGINS) {
      if (str.indexOf(pluginName) != -1) {
        return pluginName;
      }
    }
    return null;
  }

  var getIEClientCaps = function() {
    var clientcaps = document.getElementById("__Plugin_ClientCaps");
    if (!clientcaps) {
      var clientcaps = document.createElement("DIV");
      clientcaps.id = "__Plugin_ClientCaps";
      if (clientcaps.addBehavior) {
        clientcaps.addBehavior("#default#clientCaps");
        document.body.appendChild(clientcaps);
      }
      clientcaps = document.getElementById("__Plugin_ClientCaps");
    }
    return clientcaps;
  }

  var getActiveXPluginByClassId = function(classID) {
    if (!classID) return;
    var clientcaps = getIEClientCaps();
    try {
      return clientcaps.getComponentVersion(classID, "ComponentID");
    } catch (err) { }
    return;
  }

  var hasActiveXObject = function(progID) {
    var progID = getProgIdForActiveXObject(progID);
    return (progID != null);
  }

  var getProgIdForActiveXObject = function(progID) {
    if (!progID) return;
    for (var i=0; i<progID.length; i++) {
      try {
        var obj = new ActiveXObject(progID[i]);
        return progID[i];
      }
      catch(e) { }
    }
    return null;
  }

  // accepts plugin or string
  var getVersionFromPlugin = function(plugin) {
    if (!plugin.name) plugin = { name: plugin, description: name };
    var matches = /[\d][\d\.]*/.exec(plugin.name);
    if (matches && plugin.name.indexOf("Java") == -1) return matches[0];
    matches = /[\d\.]+/.exec(plugin.description);
    return matches ? matches[0] : "";
  }

};

if (!window.Plugin) {
  var Plugin = new Object();
}

// helper functions
// for usage without prototype.js
if (!Object.extend) {
  Object.extend = function(destination, source) {
    for (property in source) {
      destination[property] = source[property];
    }
    return destination;
  }
}

// Array functions
Array.contains = function(arr, el) {
  return Array.indexOf(arr, el) != -1;
}

Array.indexOf = function(arr, el) {
  for (var i=0; i<arr.length; i++) {
    if (arr[i] == el) return i;
  }
  return -1;
}

Object.extend(Plugin, (new PluginFactory()));