Mozilla Firefox Category Manager

Ever wonder what categories you have in your Mozilla/Firefox platform. Well, you can use this code below to get to know it. I bet the output would be handy for observing purposes.

var catMan = Components.classes["@mozilla.org/categorymanager;1"].getService(Components.interfaces.nsICategoryManager);

var foo = catMan.enumerateCategories();
while (foo.hasMoreElements()) {
var bar = foo.getNext();
var tmp = bar.QueryInterface(Components.interfaces.nsISupportsCString).data;
dump(’Category: ‘ + tmp + “\n”);
var item = catMan.enumerateCategory(tmp);
while(item.hasMoreElements()) {
var subitem = item.getNext();
var tmp2 = subitem.QueryInterface(Components.interfaces.nsISupportsCString).data;
dump(”\t” + tmp2 + “\n”);
}
}

Result, follows:

Category: Charset Encoders
        Adobe-Symbol-Encoding
        Big5
        Big5-HKSCS
        EUC-JP
        EUC-KR
        GB2312
        GEOSTD8
        HZ-GB-2312
        IBM850
        IBM852
        IBM855
        IBM857
        IBM862
        IBM864
        IBM864i
        IBM866
        ISO-2022-JP
        ISO-8859-1
        ISO-8859-10
        ISO-8859-11
        ISO-8859-13
        ISO-8859-14
        ISO-8859-15
        ISO-8859-16
        ISO-8859-2
        ISO-8859-3
        ISO-8859-4
        ISO-8859-5
        ISO-8859-6
        ISO-8859-6-E
        ISO-8859-6-I
        ISO-8859-7
        ISO-8859-8
        ISO-8859-8-E
        ISO-8859-8-I
        ISO-8859-9
        ISO-IR-111
        KOI8-R
        KOI8-U
        Shift_JIS
        T.61-8bit
        TIS-620
        UTF-16
        UTF-16BE
        UTF-16LE
        UTF-32BE
        UTF-32LE
        UTF-7
        UTF-8
        VISCII
        armscii-8
        gb18030
        hkscs-1
        jis_0201
        us-ascii
        windows-1250
        windows-1251
        windows-1252
        windows-1253
        windows-1254
        windows-1255
        windows-1256
        windows-1257
        windows-1258
        windows-874
        windows-936
        x-euc-tw
        x-gbk
        x-imap4-modified-utf7
        x-johab
        x-koreanjamo-0
        x-mac-arabic
        x-mac-ce
        x-mac-croatian
        x-mac-cyrillic
        x-mac-devanagari
        x-mac-farsi
        x-mac-greek
        x-mac-gujarati
        x-mac-gurmukhi
        x-mac-hebrew
        x-mac-icelandic
        x-mac-roman
        x-mac-romanian
        x-mac-turkish
        x-mac-ukrainian
        x-mathematica1
        x-mathematica2
        x-mathematica3
        x-mathematica4
        x-mathematica5
        x-mtextra
        x-t1-cmex
        x-t1-cmmi
        x-t1-cmr
        x-t1-cmsy
        x-tamilttf-0
        x-tscii
        x-ttf-cmex
        x-ttf-cmmi
        x-ttf-cmr
        x-ttf-cmsy
        x-u-escaped
        x-user-defined
        x-viet-tcvn5712
        x-viet-vps
        x-windows-949
        x-zapf-dingbats
Category: net-content-sniffers
        Feed Sniffer
Category: JavaScript global static nameset
        PrivilegeManager
Category: JavaScript global constructor
        BrowserFeedWriter
        Image
        InstallVersion
        Option
        SOAPCall
        SOAPEncoding
        SOAPFault
        SOAPHeaderBlock
        SOAPParameter
        SOAPPropertyBagMutator
        SOAPResponse
        SchemaLoader
        WSDLLoader
        WebServiceProxyFactory
Category: xpcom-directory-providers
        browser-directory-provider
        spellcheck-directory-provider
Category: uconv-charset-titles
        chrome://global/locale/charsetTitles.properties
Category: uconv-charset-data
        resource://gre/res/charsetData.properties
Category: JavaScript DOM class
        XPathEvaluator
        XPathException
        XPathExpression
        XPathNSResolver
        XPathResult
        XPointerResult
        XSLTProcessor
Category: content-policy
        @mozilla.org/data-document-content-policy;1
        @mozilla.org/embedding/browser/content-policy;1
        @mozilla.org/no-data-protocol-content-policy;1
        @mozilla.org/permissions/contentblocker;1
Category: @mozilla.org/streamconv;1
        ?from=text/ftp-dir&to=application/http-index-format
Category: pref-config-startup
        ReadConfig Module
Category: charset-detectors
        cjk_parallel_state_machine
        ja_parallel_state_machine
        ko_parallel_state_machine
        off
        ruprob
        ukprob
        universal_charset_detector
        zh_parallel_state_machine
        zhcn_parallel_state_machine
        zhtw_parallel_state_machine
Category: JavaScript global property
        InstallTrigger
        external
        sidebar
Category: passwordmanager
        Password Manager
Category: JavaScript DOM interface
        nsIXSLTProcessor
        nsIXSLTProcessorObsolete
Category: parser-service-category
        Meta Charset Service
Category: Charset Decoders
        Big5
        Big5-HKSCS
        EUC-JP
        EUC-KR
        GB2312
        GEOSTD8
        HZ-GB-2312
        IBM850
        IBM852
        IBM855
        IBM857
        IBM862
        IBM864
        IBM864i
        IBM866
        ISO-2022-CN
        ISO-2022-JP
        ISO-2022-KR
        ISO-8859-1
        ISO-8859-10
        ISO-8859-11
        ISO-8859-13
        ISO-8859-14
        ISO-8859-15
        ISO-8859-16
        ISO-8859-2
        ISO-8859-3
        ISO-8859-4
        ISO-8859-5
        ISO-8859-6
        ISO-8859-6-E
        ISO-8859-6-I
        ISO-8859-7
        ISO-8859-8
        ISO-8859-8-E
        ISO-8859-8-I
        ISO-8859-9
        ISO-IR-111
        KOI8-R
        KOI8-U
        Shift_JIS
        T.61-8bit
        TIS-620
        UTF-16
        UTF-16BE
        UTF-16LE
        UTF-32BE
        UTF-32LE
        UTF-7
        UTF-8
        VISCII
        armscii-8
        gb18030
        us-ascii
        windows-1250
        windows-1251
        windows-1252
        windows-1253
        windows-1254
        windows-1255
        windows-1256
        windows-1257
        windows-1258
        windows-874
        windows-936
        x-euc-tw
        x-gbk
        x-imap4-modified-utf7
        x-johab
        x-mac-arabic
        x-mac-ce
        x-mac-croatian
        x-mac-cyrillic
        x-mac-devanagari
        x-mac-farsi
        x-mac-greek
        x-mac-gujarati
        x-mac-gurmukhi
        x-mac-hebrew
        x-mac-icelandic
        x-mac-roman
        x-mac-romanian
        x-mac-turkish
        x-mac-ukrainian
        x-u-escaped
        x-user-defined
        x-viet-tcvn5712
        x-viet-vps
        x-windows-949
Category: external-uricontentlisteners
        application/pkix-crl
        application/x-pkcs7-crl
        application/x-x509-ca-cert
        application/x-x509-crl
        application/x-x509-email-cert
        application/x-x509-server-cert
        application/x-x509-user-cert
Category: content-sniffing-services
        @mozilla.org/image/loader;1
Category: http-startup-category
        Content UserAgent Setter
Category: command-line-argument-handlers
        inspector command line handler
Category: Gecko-Content-Viewers
        application/ecmascript
        application/http-index-format
        application/javascript
        application/rdf+xml
        application/vnd.mozilla.xul+xml
        application/x-javascript
        application/x-view-source
        application/xhtml+xml
        application/xml
        image/bmp
        image/gif
        image/jpeg
        image/jpg
        image/pjpeg
        image/png
        image/svg+xml
        image/vnd.microsoft.icon
        image/x-icon
        image/x-png
        image/x-xbitmap
        image/x-xbm
        image/xbm
        mozilla.application/cached-xul
        text/css
        text/ecmascript
        text/htmlCategory: Charset Encoders
        Adobe-Symbol-Encoding
        Big5
        Big5-HKSCS
        EUC-JP
        EUC-KR
        GB2312
        GEOSTD8
        HZ-GB-2312
        IBM850
        IBM852
        IBM855
        IBM857
        IBM862
        IBM864
        IBM864i
        IBM866
        ISO-2022-JP
        ISO-8859-1
        ISO-8859-10
        ISO-8859-11
        ISO-8859-13
        ISO-8859-14
        ISO-8859-15
        ISO-8859-16
        ISO-8859-2
        ISO-8859-3
        ISO-8859-4
        ISO-8859-5
        ISO-8859-6
        ISO-8859-6-E
        ISO-8859-6-I
        ISO-8859-7
        ISO-8859-8
        ISO-8859-8-E
        ISO-8859-8-I
        ISO-8859-9
        ISO-IR-111
        KOI8-R
        KOI8-U
        Shift_JIS
        T.61-8bit
        TIS-620
        UTF-16
        UTF-16BE
        UTF-16LE
        UTF-32BE
        UTF-32LE
        UTF-7
        UTF-8
        VISCII
        armscii-8
        gb18030
        hkscs-1
        jis_0201
        us-ascii
        windows-1250
        windows-1251
        windows-1252
        windows-1253
        windows-1254
        windows-1255
        windows-1256
        windows-1257
        windows-1258
        windows-874
        windows-936
        x-euc-tw
        x-gbk
        x-imap4-modified-utf7
        x-johab
        x-koreanjamo-0
        x-mac-arabic
        x-mac-ce
        x-mac-croatian
        x-mac-cyrillic
        x-mac-devanagari
        x-mac-farsi
        x-mac-greek
        x-mac-gujarati
        x-mac-gurmukhi
        x-mac-hebrew
        x-mac-icelandic
        x-mac-roman
        x-mac-romanian
        x-mac-turkish
        x-mac-ukrainian
        x-mathematica1
        x-mathematica2
        x-mathematica3
        x-mathematica4
        x-mathematica5
        x-mtextra
        x-t1-cmex
        x-t1-cmmi
        x-t1-cmr
        x-t1-cmsy
        x-tamilttf-0
        x-tscii
        x-ttf-cmex
        x-ttf-cmmi
        x-ttf-cmr
        x-ttf-cmsy
        x-u-escaped
        x-user-defined
        x-viet-tcvn5712
        x-viet-vps
        x-windows-949
        x-zapf-dingbats
Category: net-content-sniffers
        Feed Sniffer
Category: JavaScript global static nameset
        PrivilegeManager
Category: JavaScript global constructor
        BrowserFeedWriter
        Image
        InstallVersion
        Option
        SOAPCall
        SOAPEncoding
        SOAPFault
        SOAPHeaderBlock
        SOAPParameter
        SOAPPropertyBagMutator
        SOAPResponse
        SchemaLoader
        WSDLLoader
        WebServiceProxyFactory
Category: xpcom-directory-providers
        browser-directory-provider
        spellcheck-directory-provider
Category: uconv-charset-titles
        chrome://global/locale/charsetTitles.properties
Category: uconv-charset-data
        resource://gre/res/charsetData.properties
Category: JavaScript DOM class
        XPathEvaluator
        XPathException
        XPathExpression
        XPathNSResolver
        XPathResult
        XPointerResult
        XSLTProcessor
Category: content-policy
        @mozilla.org/data-document-content-policy;1
        @mozilla.org/embedding/browser/content-policy;1
        @mozilla.org/no-data-protocol-content-policy;1
        @mozilla.org/permissions/contentblocker;1
Category: @mozilla.org/streamconv;1
        ?from=text/ftp-dir&to=application/http-index-format
Category: pref-config-startup
        ReadConfig Module
Category: charset-detectors
        cjk_parallel_state_machine
        ja_parallel_state_machine
        ko_parallel_state_machine
        off
        ruprob
        ukprob
        universal_charset_detector
        zh_parallel_state_machine
        zhcn_parallel_state_machine
        zhtw_parallel_state_machine
Category: JavaScript global property
        InstallTrigger
        external
        sidebar
Category: passwordmanager
        Password Manager
Category: JavaScript DOM interface
        nsIXSLTProcessor
        nsIXSLTProcessorObsolete
Category: parser-service-category
        Meta Charset Service
Category: Charset Decoders
        Big5
        Big5-HKSCS
        EUC-JP
        EUC-KR
        GB2312
        GEOSTD8
        HZ-GB-2312
        IBM850
        IBM852
        IBM855
        IBM857
        IBM862
        IBM864
        IBM864i
        IBM866
        ISO-2022-CN
        ISO-2022-JP
        ISO-2022-KR
        ISO-8859-1
        ISO-8859-10
        ISO-8859-11
        ISO-8859-13
        ISO-8859-14
        ISO-8859-15
        ISO-8859-16
        ISO-8859-2
        ISO-8859-3
        ISO-8859-4
        ISO-8859-5
        ISO-8859-6
        ISO-8859-6-E
        ISO-8859-6-I
        ISO-8859-7
        ISO-8859-8
        ISO-8859-8-E
        ISO-8859-8-I
        ISO-8859-9
        ISO-IR-111
        KOI8-R
        KOI8-U
        Shift_JIS
        T.61-8bit
        TIS-620
        UTF-16
        UTF-16BE
        UTF-16LE
        UTF-32BE
        UTF-32LE
        UTF-7
        UTF-8
        VISCII
        armscii-8
        gb18030
        us-ascii
        windows-1250
        windows-1251
        windows-1252
        windows-1253
        windows-1254
        windows-1255
        windows-1256
        windows-1257
        windows-1258
        windows-874
        windows-936
        x-euc-tw
        x-gbk
        x-imap4-modified-utf7
        x-johab
        x-mac-arabic
        x-mac-ce
        x-mac-croatian
        x-mac-cyrillic
        x-mac-devanagari
        x-mac-farsi
        x-mac-greek
        x-mac-gujarati
        x-mac-gurmukhi
        x-mac-hebrew
        x-mac-icelandic
        x-mac-roman
        x-mac-romanian
        x-mac-turkish
        x-mac-ukrainian
        x-u-escaped
        x-user-defined
        x-viet-tcvn5712
        x-viet-vps
        x-windows-949
Category: external-uricontentlisteners
        application/pkix-crl
        application/x-pkcs7-crl
        application/x-x509-ca-cert
        application/x-x509-crl
        application/x-x509-email-cert
        application/x-x509-server-cert
        application/x-x509-user-cert
Category: content-sniffing-services
        @mozilla.org/image/loader;1
Category: http-startup-category
        Content UserAgent Setter
Category: command-line-argument-handlers
        inspector command line handler
Category: Gecko-Content-Viewers
        application/ecmascript
        application/http-index-format
        application/javascript
        application/rdf+xml
        application/vnd.mozilla.xul+xml
        application/x-javascript
        application/x-view-source
        application/xhtml+xml
        application/xml
        image/bmp
        image/gif
        image/jpeg
        image/jpg
        image/pjpeg
        image/png
        image/svg+xml
        image/vnd.microsoft.icon
        image/x-icon
        image/x-png
        image/x-xbitmap
        image/x-xbm
        image/xbm
        mozilla.application/cached-xul
        text/css
        text/ecmascript
        text/html
        text/javascript
        text/plain
        text/rdf
        text/xml
Category: app-startup
        @mozilla.org/browser/browserglue;1
        Browser Session Startup Service
        Browser Session Store Service
        Extension Manager
        Netscape Qfa Component
        Password Manager
        Script Security Manager
        SystemPref Module
        Update Service
        Web Content Handler Registrar
        Window Data Source
Category: component-loader
        text/javascript
Category: JavaScript global constructor prototype alias
        Image
        Option
Category: command-line-handler
        c-jsconsole
        m-browser
        m-inspector
        m-setdefaultbrowser
        x-default
        text/javascript
        text/plain
        text/rdf
        text/xml
Category: app-startup
        @mozilla.org/browser/browserglue;1
        Browser Session Startup Service
        Browser Session Store Service
        Extension Manager
        Netscape Qfa Component
        Password Manager
        Script Security Manager
        SystemPref Module
        Update Service
        Web Content Handler Registrar
        Window Data Source
Category: component-loader
        text/javascript
Category: JavaScript global constructor prototype alias
        Image
        Option
Category: command-line-handler
        c-jsconsole
        m-browser
        m-inspector
        m-setdefaultbrowser
        x-default