// Copyright (c) 2006-2008 by Martin Stubenschrott <stubenschrott@vimperator.org>
// Copyright (c) 2007-2009 by Doug Kearns <dougkearns@gmail.com>
// Copyright (c) 2008-2010 by Kris Maglione <maglione.k at Gmail>
//
// This work is licensed for reuse under an MIT license. Details are
// given in the LICENSE.txt file included with this file.
"use strict";

/** @scope modules */

/**
 * @instance browser
 */
const Browser = Module("browser", {
}, {
    // TODO: support 'nrformats'? -> probably not worth it --mst
    incrementURL: function (count) {
        let matches = buffer.URL.match(/(.*?)(\d+)(\D*)$/);
        dactyl.assert(matches);

        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;
        }

        dactyl.open(pre + newNumberStr + post);
    }
}, {
    options: function () {
        options.add(["encoding", "enc"],
            "Sets the current buffer's character encoding",
            "string", "UTF-8",
            {
                scope: Option.SCOPE_LOCAL,
                getter: function () config.browser.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 {
                        config.browser.docShell.QueryInterface(Ci.nsIDocCharset).charset = val;
                        PlacesUtils.history.setCharsetForURI(getWebNavigation().currentURI, val);
                        getWebNavigation().reload(Ci.nsIWebNavigation.LOAD_FLAGS_CHARSET_CHANGE);
                    }
                    catch (e) { dactyl.reportError(e); }
                    return null;
                },
                completer: function (context) completion.charset(context)
            });

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

    mappings: function () {
        mappings.add([modes.NORMAL],
            ["y"], "Yank current location to the clipboard",
            function () { dactyl.clipboardWrite(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) { Browser.incrementURL(Math.max(count, 1)); },
            { count: true });

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

        mappings.add([modes.NORMAL], ["~"],
            "Open home directory",
            function () { dactyl.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();
                dactyl.open(homepages, { from: "homepage", where: dactyl.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)
                    dactyl.beep();
                else
                    dactyl.open(url);
            },
            { count: true });

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

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

    commands: function () {
        commands.add(["downl[oads]", "dl"],
            "Show progress of current downloads",
            function () {
                dactyl.open("chrome://mozapps/content/downloads/downloads.xul",
                    { from: "downloads"});
            },
            { argCount: "0" });

        commands.add(["o[pen]"],
            "Open one or more URLs in the current tab",
            function (args) {
                if (args[0])
                    dactyl.open(args[0]);
                else
                    dactyl.open("about:blank");
            }, {
                completer: function (context) completion.url(context),
                domains: function (args) array.compact(dactyl.stringToURLArray(args[0] || "").map(
                    function (url) util.getHost(url))),
                literal: 0,
                privateData: true
            });

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

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