// Copyright (c) 2006-2009 by Martin Stubenschrott <stubenschrott@vimperator.org>
//
// This work is licensed for reuse under an MIT license. Details are
// given in the LICENSE.txt file included with this file.


/** @scope modules */

/**
 * @instance browser
 */
function Browser() //{{{
{
    ////////////////////////////////////////////////////////////////////////////////
    ////////////////////// PRIVATE SECTION /////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////{{{

    // TODO: support 'nrformats'? -> probably not worth it --mst
    function incrementURL(count)
    {
        let matches = buffer.URL.match(/(.*?)(\d+)(\D*)$/);
        if (!matches)
            return void liberator.beep();

        let [, pre, number, post] = matches;
        let newNumber = parseInt(number, 10) + count;
        let newNumberStr = String(newNumber > 0 ? newNumber : 0);
        if (number.match(/^0/)) // add 0009<C-a> should become 0010
        {
            while (newNumberStr.length < number.length)
                newNumberStr = "0" + newNumberStr;
        }

        liberator.open(pre + newNumberStr + post);
    }

    /////////////////////////////////////////////////////////////////////////////}}}
    ////////////////////// OPTIONS /////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////{{{

    options.add(["encoding", "enc"],
        "Sets the current buffer's character encoding",
        "string", "UTF-8",
        {
            scope: options.OPTION_SCOPE_LOCAL,
            getter: function () getBrowser().docShell.QueryInterface(Ci.nsIDocCharset).charset,
            setter: function (val)
            {
                if (options["encoding"] == val)
                    return val;

                // Stolen from browser.jar/content/browser/browser.js, more or less.
                try
                {
                    getBrowser().docShell.QueryInterface(Ci.nsIDocCharset).charset = val;
                    PlacesUtils.history.setCharsetForURI(getWebNavigation().currentURI, val);
                    getWebNavigation().reload(Ci.nsIWebNavigation.LOAD_FLAGS_CHARSET_CHANGE);
                }
                catch (e) { liberator.reportError(e); }
            },
            completer: function (context) completion.charset(context),
            validator: Option.validateCompleter
        });

    // only available in FF 3.5
    services.add("privateBrowsing", "@mozilla.org/privatebrowsing;1", Ci.nsIPrivateBrowsingService);
    if (services.get("privateBrowsing"))
    {
        options.add(["private", "pornmode"],
            "Set the 'private browsing' option",
            "boolean", false,
            {
                setter: function (value) services.get("privateBrowsing").privateBrowsingEnabled = value,
                getter: function () services.get("privateBrowsing").privateBrowsingEnabled
            });
        let services = modules.services; // Storage objects are global to all windows, 'modules' isn't.
        storage.newObject("private-mode", function () {
            ({
                init: function ()
                {
                    services.get("observer").addObserver(this, "private-browsing", false);
                    services.get("observer").addObserver(this, "quit-application", false);
                    this.private = services.get("privateBrowsing").privateBrowsingEnabled;
                },
                observe: function (subject, topic, data)
                {
                    if (topic == "private-browsing")
                    {
                        if (data == "enter")
                            storage.privateMode = true;
                        else if (data == "exit")
                            storage.privateMode = false;
                        storage.fireEvent("private-mode", "change", storage.privateMode);
                    }
                    else if (topic == "quit-application")
                    {
                        services.get("observer").removeObserver(this, "quit-application");
                        services.get("observer").removeObserver(this, "private-browsing");
                    }
                }
            }).init();
        }, { store: false });
        storage.addObserver("private-mode",
            function (key, event, value) {
                autocommands.trigger("PrivateMode", { state: value });
            }, window);
    }

    options.add(["urlseparator"],
        "Set the separator regex used to separate multiple URL args",
        "string", ",\\s");

    /////////////////////////////////////////////////////////////////////////////}}}
    ////////////////////// MAPPINGS ////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////{{{

    mappings.add([modes.NORMAL],
        ["y"], "Yank current location to the clipboard",
        function () { util.copyToClipboard(buffer.URL, true); });

    // opening websites
    mappings.add([modes.NORMAL],
        ["o"], "Open one or more URLs",
        function () { commandline.open(":", "open ", modes.EX); });

    mappings.add([modes.NORMAL], ["O"],
        "Open one or more URLs, based on current location",
        function () { commandline.open(":", "open " + buffer.URL, modes.EX); });

    mappings.add([modes.NORMAL], ["t"],
        "Open one or more URLs in a new tab",
        function () { commandline.open(":", "tabopen ", modes.EX); });

    mappings.add([modes.NORMAL], ["T"],
        "Open one or more URLs in a new tab, based on current location",
        function () { commandline.open(":", "tabopen " + buffer.URL, modes.EX); });

    mappings.add([modes.NORMAL], ["w"],
        "Open one or more URLs in a new window",
        function () { commandline.open(":", "winopen ", modes.EX); });

    mappings.add([modes.NORMAL], ["W"],
        "Open one or more URLs in a new window, based on current location",
        function () { commandline.open(":", "winopen " + buffer.URL, modes.EX); });

    mappings.add([modes.NORMAL],
        ["<C-a>"], "Increment last number in URL",
        function (count) { incrementURL(Math.max(count, 1)); },
        { count: true });

    mappings.add([modes.NORMAL],
        ["<C-x>"], "Decrement last number in URL",
        function (count) { incrementURL(-Math.max(count, 1)); },
        { count: true });

    mappings.add([modes.NORMAL], ["~"],
        "Open home directory",
        function () { liberator.open("~"); });

    mappings.add([modes.NORMAL], ["gh"],
        "Open homepage",
        function () { BrowserHome(); });

    mappings.add([modes.NORMAL], ["gH"],
        "Open homepage in a new tab",
        function ()
        {
            let homepages = gHomeButton.getHomePage();
            liberator.open(homepages, { from: "homepage", where: liberator.NEW_TAB });
        });

    mappings.add([modes.NORMAL], ["gu"],
        "Go to parent directory",
        function (count)
        {
            function isDirectory(url)
            {
                if (/^file:\/|^\//.test(url))
                {
                    let file = io.File(url);
                    return file.exists() && file.isDirectory();
                }
                else
                {
                    // for all other locations just check if the URL ends with /
                    return /\/$/.test(url);
                }
            }

            if (count < 1)
                count = 1;

            // XXX
            let url = buffer.URL;
            for (let i = 0; i < count; i++)
            {
                if (isDirectory(url))
                    url = url.replace(/^(.*?:)(.*?)([^\/]+\/*)$/, "$1$2/");
                else
                    url = url.replace(/^(.*?:)(.*?)(\/+[^\/]+)$/, "$1$2/");
            }
            url = url.replace(/^(.*:\/+.*?)\/+$/, "$1/"); // get rid of more than 1 / at the end

            if (url == buffer.URL)
                liberator.beep();
            else
                liberator.open(url);
        },
        { count: true });

    mappings.add([modes.NORMAL], ["gU"],
        "Go to the root of the website",
        function ()
        {
            let uri = content.document.location;
            if (/(about|mailto):/.test(uri.protocol)) // exclude these special protocols for now
                return void liberator.beep();
            liberator.open(uri.protocol + "//" + (uri.host || "") + "/");
        });

    mappings.add([modes.NORMAL], ["<C-l>"],
        "Redraw the screen",
        function () { commands.get("redraw").execute("", false); });

    /////////////////////////////////////////////////////////////////////////////}}}
    ////////////////////// COMMANDS ////////////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////{{{

    commands.add(["downl[oads]", "dl"],
        "Show progress of current downloads",
        function ()
        {
            liberator.open("chrome://mozapps/content/downloads/downloads.xul",
                options.get("newtab").has("all", "downloads")
                    ? liberator.NEW_TAB : liberator.CURRENT_TAB);
        },
        { argCount: "0" });

    commands.add(["o[pen]", "e[dit]"],
        "Open one or more URLs in the current tab",
        function (args)
        {
            args = args.string;

            if (args)
                liberator.open(args);
            else
                liberator.open("about:blank");
        },
        {
            completer: function (context) completion.url(context),
            literal: 0,
            privateData: true,
        });

    commands.add(["redr[aw]"],
        "Redraw the screen",
        function ()
        {
            let wu = window.QueryInterface(Ci.nsIInterfaceRequestor)
                           .getInterface(Ci.nsIDOMWindowUtils);
            wu.redraw();
            modes.show();
        },
        { argCount: "0" });

    /////////////////////////////////////////////////////////////////////////////}}}
    ////////////////////// PUBLIC SECTION //////////////////////////////////////////
    /////////////////////////////////////////////////////////////////////////////{{{

    return {
        // TODO: extract browser-specific functionality from liberator
    };
    //}}}
} //}}}

// vim: set fdm=marker sw=4 ts=4 et: