/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

function MultiplexHandler(aEvent)

{

    MultiplexHandlerEx(

        aEvent,

        function Browser_SelectDetector(event) {

            BrowserCharsetReload();

            /* window.content.location.reload() will re-download everything */

            SelectDetector(event, null);

        },

        function Browser_SetForcedCharset(charset, isPredefined) {

            BrowserSetForcedCharacterSet(charset);

        }

    );

}

function MailMultiplexHandler(aEvent)

{

    MultiplexHandlerEx(

        aEvent,

        function Mail_SelectDetector(event) {

            SelectDetector(

                event,

                function Mail_Reload() {

                    messenger.setDocumentCharset(msgWindow.mailCharacterSet);

                }

            );

        },

        function Mail_SetForcedCharset(charset, isPredefined) {

            MessengerSetForcedCharacterSet(charset);

        }

    );

}

function ComposerMultiplexHandler(aEvent)

{

    MultiplexHandlerEx(

        aEvent,

        function Composer_SelectDetector(event) {

            SelectDetector(

                event,

                function Composer_Reload() {

                    EditorLoadUrl(GetDocumentUrl());

                }

            );

        },

        function Composer_SetForcedCharset(charset, isPredefined) {

            if ((!isPredefined) && charset.length > 0) {

                gCharsetMenu.SetCurrentComposerCharset(charset);

            }

            EditorSetDocumentCharacterSet(charset);

        }

    );

}

function MultiplexHandlerEx(aEvent, aSelectDetector, aSetForcedCharset)

{

    try {

        var node = aEvent.target;

        var name = node.getAttribute('name');

        if (name == 'detectorGroup') {

            aSelectDetector(aEvent);

        } else if (name == 'charsetGroup') {

            var charset = node.getAttribute('id');

            charset = charset.substring('charset.'.length, charset.length)

            aSetForcedCharset(charset, true);

        } else if (name == 'charsetCustomize') {

            //do nothing - please remove this else statement, once the charset prefs moves to the pref window

        } else {

            aSetForcedCharset(node.getAttribute('id'), false);

        }

    } catch(ex) {

        alert(ex);

    }

}

function SelectDetector(event, doReload)

{

    dump("Charset Detector menu item pressed: " + event.target.getAttribute('id') + "\n");

    var uri =  event.target.getAttribute("id");

    var prefvalue = uri.substring('chardet.'.length, uri.length);

    if ("off" == prefvalue) { // "off" is special value to turn off the detectors

        prefvalue = "";

    }

    try {

        var pref = Components.classes["@mozilla.org/preferences-service;1"]

                             .getService(Components.interfaces.nsIPrefBranch);

        var str =  Components.classes["@mozilla.org/supports-string;1"]

                             .createInstance(Components.interfaces.nsISupportsString);

        str.data = prefvalue;

        pref.setComplexValue("intl.charset.detector",

                             Components.interfaces.nsISupportsString, str);

        if (typeof doReload == "function") doReload();

    }

    catch (ex) {

        dump("Failed to set the intl.charset.detector preference.\n");

    }

}

var gPrevCharset = null;

function UpdateCurrentCharset()

{

    // extract the charset from DOM

    var wnd = document.commandDispatcher.focusedWindow;

    if ((window == wnd) || (wnd == null)) wnd = window.content;

    // Uncheck previous item

    if (gPrevCharset) {

        var pref_item = document.getElementById('charset.' + gPrevCharset);

        if (pref_item)

          pref_item.setAttribute('checked', 'false');

    }

    var menuitem = document.getElementById('charset.' + wnd.document.characterSet);

    if (menuitem) {

        menuitem.setAttribute('checked', 'true');

    }

}

function UpdateCurrentMailCharset()

{

    var charset = msgWindow.mailCharacterSet;

    var menuitem = document.getElementById('charset.' + charset);

    if (menuitem) {

        menuitem.setAttribute('checked', 'true');

    }

}

function UpdateCharsetDetector()

{

    var prefvalue;

    try {

        var pref = Components.classes["@mozilla.org/preferences-service;1"]

                             .getService(Components.interfaces.nsIPrefBranch);

        prefvalue = pref.getComplexValue("intl.charset.detector",

                                         Components.interfaces.nsIPrefLocalizedString).data;

    }

    catch (ex) {

        prefvalue = "";

    }

    if (prefvalue == "") prefvalue = "off";

    dump("intl.charset.detector = "+ prefvalue + "\n");

    prefvalue = 'chardet.' + prefvalue;

    var menuitem = document.getElementById(prefvalue);

    if (menuitem) {

        menuitem.setAttribute('checked', 'true');

    }

}

function UpdateMenus(event)

{

    // use setTimeout workaround to delay checkmark the menu

    // when onmenucomplete is ready then use it instead of oncreate

    // see bug 78290 for the detail

    UpdateCurrentCharset();

    setTimeout(UpdateCurrentCharset, 0);

    UpdateCharsetDetector();

    setTimeout(UpdateCharsetDetector, 0);

}

function CreateMenu(node)

{

  var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);

  observerService.notifyObservers(null, "charsetmenu-selected", node);

}

function UpdateMailMenus(event)

{

    // use setTimeout workaround to delay checkmark the menu

    // when onmenucomplete is ready then use it instead of oncreate

    // see bug 78290 for the detail

    UpdateCurrentMailCharset();

    setTimeout(UpdateCurrentMailCharset, 0);

    UpdateCharsetDetector();

    setTimeout(UpdateCharsetDetector, 0);

}

var gCharsetMenu = Components.classes['@mozilla.org/rdf/datasource;1?name=charset-menu'].getService().QueryInterface(Components.interfaces.nsICurrentCharsetListener);

var gLastBrowserCharset = null;

function charsetLoadListener (event)

{

    var charset = window.content.document.characterSet;

    if (charset.length > 0 && (charset != gLastBrowserCharset)) {

        gCharsetMenu.SetCurrentCharset(charset);

        gPrevCharset = gLastBrowserCharset;

        gLastBrowserCharset = charset;

    }

}

function composercharsetLoadListener (event)

{

    var charset = window.content.document.characterSet;

    if (charset.length > 0 ) {

       gCharsetMenu.SetCurrentComposerCharset(charset);

    }

 }

function SetForcedEditorCharset(charset)

{

    if (charset.length > 0 ) {

       gCharsetMenu.SetCurrentComposerCharset(charset);

    }

    EditorSetDocumentCharacterSet(charset);

}

var gLastMailCharset = null;

function mailCharsetLoadListener (event)

{

    if (msgWindow) {

        var charset = msgWindow.mailCharacterSet;

        if (charset.length > 0 && (charset != gLastMailCharset)) {

            gCharsetMenu.SetCurrentMailCharset(charset);

            gLastMailCharset = charset;

        }

    }

}

function InitCharsetMenu()

{

    removeEventListener("load", InitCharsetMenu, true);

    var wintype = document.documentElement.getAttribute('windowtype');

    if (window && (wintype == "navigator:browser"))

    {

        var contentArea = window.document.getElementById("appcontent");

        if (contentArea)

            contentArea.addEventListener("pageshow", charsetLoadListener, true);

    }

    else

    {

        var arrayOfStrings = wintype.split(":");

        if (window && arrayOfStrings[0] == "mail")

        {

            var messageContent = window.document.getElementById("messagepane");

            if (messageContent)

                messageContent.addEventListener("pageshow", mailCharsetLoadListener, true);

        }

        else

        if (window && arrayOfStrings[0] == "composer")

        {

            contentArea = window.document.getElementById("appcontent");

            if (contentArea)

                contentArea.addEventListener("pageshow", composercharsetLoadListener, true);

        }

    }

}

addEventListener("load", InitCharsetMenu, true);