// Copyright (c) 2006-2008 by Martin Stubenschrott <stubenschrott@vimperator.org>
// Copyright (c) 2007-2011 by Doug Kearns <dougkearns@gmail.com>
// Copyright (c) 2008-2011 by Kris Maglione <maglione.k@gmail.com>
//
// 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 */

var StatusLine = Module("statusline", {
    init: function init() {
        this._statusLine = document.getElementById("status-bar");
        this.statusBar = document.getElementById("addon-bar") || this._statusLine;
        this.statusBar.collapsed = true;
        this.baseGroup = this.statusBar == this._statusLine ? "StatusLine " : "";

        if (this.statusBar.localName == "toolbar") {
            styles.system.add("addon-bar", config.styleableChrome, <css><![CDATA[
                #status-bar { margin-top: 0 !important; }
                #addon-bar > statusbar { -moz-box-flex: 1 }
                #addon-bar > #addonbar-closebutton { visibility: collapse; }
                #addon-bar > xul|toolbarspring { visibility: collapse; }
            ]]></css>);

            util.overlayWindow(window, { append: <><statusbar id="status-bar" ordinal="0"/></> });

            highlight.loadCSS(util.compileMacro(<![CDATA[
                !AddonBar;#addon-bar {
                    /* The Add-on Bar */
                    padding-left: 0 !important;
                    min-height: 18px !important;
                    -moz-appearance: none !important;
                    <padding>
                }
                !AddonButton;#addon-bar xul|toolbarbutton {
                    /* An Add-on Bar button */
                    -moz-appearance: none !important;
                    padding: 0 !important;
                    border-width: 0px !important;
                    min-width: 0 !important;
                    color: inherit !important;
                }
                AddonButton:not(:hover)  background: transparent !important;
            ]]>)({ padding: util.OS.isMacOSX ? "padding-right: 10px !important;" : "" }));

            if (document.getElementById("appmenu-button"))
                highlight.loadCSS(<![CDATA[
                    AppmenuButton       /* The app-menu button */ \
                                        min-width: 0 !important; padding: 0 .5em !important;
                ]]>);
        }

        XML.ignoreWhitespace = true;
        let _commandline = "if (window.dactyl) return dactyl.modules.commandline";
        let prepend = <e4x xmlns={XUL} xmlns:dactyl={NS}>
            <button id="appmenu-button" label="" image="chrome://branding/content/icon16.png" highlight="AppmenuButton" />
            <toolbarbutton id="appmenu-toolbar-button" label="" image="chrome://branding/content/icon16.png" />
            <statusbar id="status-bar" highlight="StatusLine">
                <!-- insertbefore="dactyl.statusBefore;" insertafter="dactyl.statusAfter;" -->
                <hbox key="container" hidden="false" align="center"  flex="1">
                    <stack orient="horizontal"       align="stretch" flex="1" highlight="CmdLine StatusCmdLine" class="dactyl-container">
                        <hbox                                                 highlight="CmdLine StatusCmdLine" class="dactyl-container">
                            <label key="mode"          crop="end"                                               class="plain" collapsed="true"/>
                            <stack  id="dactyl-statusline-stack"     flex="1" highlight="CmdLine StatusCmdLine" class="dactyl-container">
                                <textbox key="url"     crop="end"    flex="1" style="background: transparent;"  class="plain dactyl-status-field-url" readonly="true"/>
                                <textbox key="message" crop="end"    flex="1" highlight="Normal StatusNormal"   class="plain"                         readonly="true"/>
                            </stack>
                        </hbox>
                    </stack>
                    <label class="plain" key="inputbuffer"    flex="0"/>
                    <label class="plain" key="progress"       flex="0"/>
                    <label class="plain" key="tabcount"       flex="0"/>
                    <label class="plain" key="bufferposition" flex="0"/>
                    <label class="plain" key="zoomlevel"      flex="0"/>
                </hbox>
                <!-- just hide them since other elements expect them -->
                <statusbarpanel id="statusbar-display"       hidden="true"/>
                <statusbarpanel id="statusbar-progresspanel" hidden="true"/>
            </statusbar>
        </e4x>;

        for each (let attr in prepend..@key)
            attr.parent().@id = "dactyl-statusline-field-" + attr;

        util.overlayWindow(window, {
            objects: this.widgets = { get status() this.container },
            prepend: prepend.elements()
        });

        try {
            this.security = content.document.dactylSecurity || "insecure";
        }
        catch (e) {}
    },

    get visible() !this.statusBar.collapsed && !this.statusBar.hidden,

    signals: {
        "browser.locationChange": function (webProgress, request, uri) {
            let win = webProgress.DOMWindow;
            this.status = uri;
            this.progress = uri && win && win.dactylProgress || "";

            // if this is not delayed we get the position of the old buffer
            this.timeout(function () {
                this.updateBufferPosition();
                this.updateZoomLevel();
            }, 500);
        },
        "browser.overLink": function (link) {
            switch (options["showstatuslinks"]) {
            case "status":
                this.status = link ? _("status.link", link) : buffer.uri;
                break;
            case "command":
                if (link)
                    dactyl.echo(_("status.link", link), commandline.FORCE_SINGLELINE);
                else
                    commandline.clear();
                break;
            }
        },
        "browser.progressChange": function onProgressChange(webProgress, request, curSelfProgress, maxSelfProgress, curTotalProgress, maxTotalProgress) {
            if (webProgress && webProgress.DOMWindow)
                webProgress.DOMWindow.dactylProgress = curTotalProgress / maxTotalProgress;
            this.progress = curTotalProgress / maxTotalProgress;
        },
        "browser.securityChange": function onSecurityChange(webProgress, request, state) {

            if (state & Ci.nsIWebProgressListener.STATE_IS_BROKEN)
                this.security = "broken";
            else if (state & Ci.nsIWebProgressListener.STATE_IDENTITY_EV_TOPLEVEL)
                this.security = "extended";
            else if (state & Ci.nsIWebProgressListener.STATE_SECURE_HIGH)
                this.security = "secure";
            else // if (state & Ci.nsIWebProgressListener.STATE_IS_INSECURE)
                this.security = "insecure";

            if (webProgress && webProgress.DOMWindow)
                webProgress.DOMWindow.document.dactylSecurity = this.security;
        },
        "browser.stateChange": function onStateChange(webProgress, request, flags, status) {
            if (flags & Ci.nsIWebProgressListener.STATE_START)
                this.progress = 0;
            if (flags & Ci.nsIWebProgressListener.STATE_STOP) {
                this.progress = "";
                this.updateStatus();
            }
        },
        "browser.statusChange": function onStatusChange(webProgress, request, status, message) {
            this.timeout(function () {
                this.status = message || buffer.uri;
            });
        }
    },

    /**
     * Update the status bar to indicate how secure the website is:
     * extended - Secure connection with Extended Validation(EV) certificate.
     * secure -   Secure connection with valid certificate.
     * broken -   Secure connection with invalid certificate, or
     *            mixed content.
     * insecure - Insecure connection.
     *
     * @param {'extended'|'secure'|'broken'|'insecure'} type
     */
    set security(type) {
        this._security = type;
        const highlightGroup = {
            extended: "StatusLineExtended",
            secure:   "StatusLineSecure",
            broken:   "StatusLineBroken",
            insecure: "StatusLineNormal"
        };

        highlight.highlightNode(this.statusBar, this.baseGroup + highlightGroup[type]);
    },
    get security() this._security,

    // update all fields of the statusline
    update: function update() {
        this.updateStatus();
        this.inputBuffer = "";
        this.progress = "";
        this.updateTabCount();
        this.updateBufferPosition();
        this.updateZoomLevel();
    },

    // ripped from Firefox; modified
    unsafeURI: util.regexp(String.replace(<![CDATA[
            [
                \s
                // Invisible characters (bug 452979)
                U001C U001D U001E U001F // file/group/record/unit separator
                U00AD // Soft hyphen
                UFEFF // BOM
                U2060 // Word joiner
                U2062 U2063  // Invisible times/separator
                U200B UFFFC // Zero-width space/no-break space

                // Bidi formatting characters. (RFC 3987 sections 3.2 and 4.1 paragraph 6)
                U200E U200F U202A U202B U202C U202D U202E
            ]
        ]]>, /U/g, "\\u"),
        "gx"),
    losslessDecodeURI: function losslessDecodeURI(url) {
        return url.split("%25").map(function (url) {
                // Non-UTF-8 compliant URLs cause "malformed URI sequence" errors.
                try {
                    return decodeURI(url).replace(this.unsafeURI, encodeURIComponent);
                }
                catch (e) {
                    return url;
                }
            }, this).join("%25");
    },

    /**
     * Update the URL displayed in the status line. Also displays status
     * icons, [+-♥], when there are next and previous pages in the
     * current tab's history, and when the current URL is bookmarked,
     * respectively.
     *
     * @param {string} url The URL to display.
     */
    get status() this._uri,
    set status(uri) {
        let modified = "";
        let url = uri;
        if (isinstance(uri, Ci.nsIURI)) {
            // when session information is available, add [+] when we can go
            // backwards, [-] when we can go forwards
            if (uri.equals(buffer.uri) && window.getWebNavigation) {
                let sh = window.getWebNavigation().sessionHistory;
                if (sh && sh.index > 0)
                    modified += "-";
                if (sh && sh.index < sh.count - 1)
                    modified += "+";
                if (this.bookmarked)
                    modified += UTF8("❤");
            }

            if (modules.quickmarks)
                modified += quickmarks.find(uri.spec.replace(/#.*/, "")).join("");

            url = this.losslessDecodeURI(uri.spec);
        }

        if (url == "about:blank") {
            if (!buffer.title)
                url = _("buffer.noName");
        }
        else {
            url = url.replace(RegExp("^dactyl://help/(\\S+)#(.*)"), function (m, n1, n2) n1 + " " + decodeURIComponent(n2) + " " + _("buffer.help"))
                     .replace(RegExp("^dactyl://help/(\\S+)"), "$1 " + _("buffer.help"));
        }

        if (modified)
            url += " [" + modified + "]";

        this.widgets.url.value = url;
        this._status = uri;
    },

    get bookmarked() this._bookmarked,
    set bookmarked(val) {
        this._bookmarked = val;
        if (this.status)
            this.status = this.status;
    },

    updateStatus: function updateStatus() {
        this.timeout(function () {
            this.status = buffer.uri;
        });
    },

    updateUrl: deprecated("statusline.status", function updateUrl(url) { this.status = url || buffer.uri }),

    /**
     * Set the contents of the status line's input buffer to the given
     * string. Used primarily when a key press requires further input
     * before being processed, including mapping counts and arguments,
     * along with multi-key mappings.
     *
     * @param {string} buffer
     * @optional
     */
    get inputBuffer() this.widgets.inputbuffer.value,
    set inputBuffer(val) this.widgets.inputbuffer.value = val == null ? "" : val,
    updateInputBuffer: deprecated("statusline.inputBuffer", function updateInputBuffer(val) { this.inputBuffer = val; }),

    /**
     * Update the page load progress bar.
     *
     * @param {string|number} progress The current progress, as follows:
     *    A string          - Displayed literally.
     *    A ratio 0 < n < 1 - Displayed as a progress bar.
     *    A number n <= 0   - Displayed as a "Loading" message.
     *    Any other number  - The progress is cleared.
     */
    progress: Modes.boundProperty({
        get: function progress() this._progress,
        set: function progress(progress) {
            this._progress = progress || "";

            if (isinstance(progress, ["String", _]))
                this.widgets.progress.value = this._progress;
            else if (typeof progress == "number") {
                let progressStr = "";
                if (this._progress <= 0)
                    progressStr = /*L*/"[ Loading...         ]";
                else if (this._progress < 1) {
                    let progress = Math.round(this._progress * 20);
                    progressStr = "["
                        + "===================>                    "
                            .substr(20 - progress, 20)
                        + "]";
                }
                this.widgets.progress.value = progressStr;
            }
        }
    }),
    updateProgress: deprecated("statusline.progress", function updateProgress(progress) {
        this.progress = progress;
    }),

    /**
     * Display the correct tabcount (e.g., [1/5]) on the status bar.
     *
     * @param {boolean} delayed When true, update count after a brief timeout.
     *     Useful in the many cases when an event that triggers an update is
     *     broadcast before the tab state is fully updated.
     * @optional
     */
    updateTabCount: function updateTabCount(delayed) {
        if (dactyl.has("tabs")) {
            if (delayed) {
                this.timeout(function () this.updateTabCount(false), 0);
                return;
            }

            this.widgets.tabcount.value = "[" + (tabs.index(null, true) + 1) + "/" + tabs.visibleTabs.length + "]";
        }
    },

    /**
     * Display the main content's vertical scroll position in the status
     * bar.
     *
     * @param {number} percent The position, as a percentage.
     * @optional
     */
    updateBufferPosition: function updateBufferPosition(percent) {
        if (percent == null) {
            let win = document.commandDispatcher.focusedWindow;
            if (!win)
                return;
            win.scrollY; // intentional - see Kris
            percent = win.scrollY    == 0 ?  0 : // This prevents a forced rendering
                      win.scrollMaxY == 0 ? -1 : win.scrollY / win.scrollMaxY;
        }

        percent = Math.round(percent * 100);

        if (percent < 0)
            var position = "All";
        else if (percent == 0)
            position = "Top";
        else if (percent >= 100)
            position = "Bot";
        else if (percent < 10)
            position = " " + percent + "%";
        else
            position = percent + "%";

        this.widgets.bufferposition.value = position;
    },

    /**
     * Display the main content's zoom level.
     *
     * @param {number} percent The zoom level, as a percentage. @optional
     * @param {boolean} full True if full zoom is in operation. @optional
     */
    updateZoomLevel: function updateZoomLevel(percent, full) {
        if (arguments.length == 0)
            [percent, full] = [buffer.zoomLevel, buffer.fullZoom];

        if (percent == 100)
            this.widgets.zoomlevel.value = "";
        else {
            percent = ("  " + Math.round(percent)).substr(-3);
            if (full)
                this.widgets.zoomlevel.value = " [" + percent + "%]";
            else
                this.widgets.zoomlevel.value = " (" + percent + "%)";
        }
    }
});

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