// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-

const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const GObject = imports.gi.GObject;
const Gtk = imports.gi.Gtk;
const Gdk = imports.gi.Gdk;
const Lang = imports.lang;
const Mainloop = imports.mainloop;

// Use __ () and N__() for the extension gettext domain, and reuse
// the shell domain with the default _() and N_()
const Gettext = imports.gettext.domain('dashtodock');
const __ = Gettext.gettext;
const N__ = function(e) { return e };

const ExtensionUtils = imports.misc.extensionUtils;
const Me = ExtensionUtils.getCurrentExtension();
const Convenience = Me.imports.convenience;

const SCALE_UPDATE_TIMEOUT = 500;
const DEFAULT_ICONS_SIZES = [ 128, 96, 64, 48, 32, 24, 16 ];

const TransparencyMode = {
    DEFAULT:  0,
    FIXED:    1,
    ADAPTIVE: 2,
    DYNAMIC:  3
};

const RunningIndicatorStyle = {
    DEFAULT: 0,
    DOTS: 1,
    SQUARES: 2,
    DASHES: 3,
    SEGMENTED: 4,
    SOLID: 5,
    CILIORA: 6,
    METRO: 7
};

/**
 * This function was copied from the activities-config extension
 * https://github.com/nls1729/acme-code/tree/master/activities-config
 * by Norman L. Smith.
 */
function cssHexString(css) {
    let rrggbb = '#';
    let start;
    for (let loop = 0; loop < 3; loop++) {
        let end = 0;
        let xx = '';
        for (let loop = 0; loop < 2; loop++) {
            while (true) {
                let x = css.slice(end, end + 1);
                if ((x == '(') || (x == ',') || (x == ')'))
                    break;
                end++;
            }
            if (loop == 0) {
                end++;
                start = end;
            }
        }
        xx = parseInt(css.slice(start, end)).toString(16);
        if (xx.length == 1)
            xx = '0' + xx;
        rrggbb += xx;
        css = css.slice(end);
    }
    return rrggbb;
}

function setShortcut(settings) {
    let shortcut_text = settings.get_string('shortcut-text');
    let [key, mods] = Gtk.accelerator_parse(shortcut_text);

    if (Gtk.accelerator_valid(key, mods)) {
        let shortcut = Gtk.accelerator_name(key, mods);
        settings.set_strv('shortcut', [shortcut]);
    }
    else {
        settings.set_strv('shortcut', []);
    }
}

const Settings = new Lang.Class({
    Name: 'DashToDock.Settings',

    _init: function() {
        this._settings = Convenience.getSettings('org.gnome.shell.extensions.dash-to-dock');

        this._rtl = (Gtk.Widget.get_default_direction() == Gtk.TextDirection.RTL);

        this._builder = new Gtk.Builder();
        this._builder.set_translation_domain(Me.metadata['gettext-domain']);
        this._builder.add_from_file(Me.path + '/Settings.ui');

        this.widget = new Gtk.ScrolledWindow({ hscrollbar_policy: Gtk.PolicyType.NEVER });
        this._notebook = this._builder.get_object('settings_notebook');
        this.widget.add(this._notebook);

        // Set a reasonable initial window height
        this.widget.connect('realize', Lang.bind(this, function() {
            let window = this.widget.get_toplevel();
            let [default_width, default_height] = window.get_default_size();
            window.resize(default_width, 650);
        }));

        // Timeout to delay the update of the settings
        this._dock_size_timeout = 0;
        this._icon_size_timeout = 0;
        this._opacity_timeout = 0;

        this._bindSettings();

        this._builder.connect_signals_full(Lang.bind(this, this._connector));
    },

    /**
     * Connect signals
     */
    _connector: function(builder, object, signal, handler) {
        object.connect(signal, Lang.bind(this, this._SignalHandler[handler]));
    },

    _bindSettings: function() {
        // Position and size panel

        // Monitor options

        this._monitors = [];
        // Build options based on the number of monitors and the current settings.
        let n_monitors = Gdk.Screen.get_default().get_n_monitors();
        let primary_monitor = Gdk.Screen.get_default().get_primary_monitor();

        let monitor = this._settings.get_int('preferred-monitor');

        // Add primary monitor with index 0, because in GNOME Shell the primary monitor is always 0
        this._builder.get_object('dock_monitor_combo').append_text(__('Primary monitor'));
        this._monitors.push(0);

        // Add connected monitors
        let ctr = 0;
        for (let i = 0; i < n_monitors; i++) {
            if (i !== primary_monitor) {
                ctr++;
                this._monitors.push(ctr);
                this._builder.get_object('dock_monitor_combo').append_text(__('Secondary monitor ') + ctr);
            }
        }

        // If one of the external monitor is set as preferred, show it even if not attached
        if ((monitor >= n_monitors) && (monitor !== primary_monitor)) {
            this._monitors.push(monitor)
            this._builder.get_object('dock_monitor_combo').append_text(__('Secondary monitor ') + ++ctr);
        }

        this._builder.get_object('dock_monitor_combo').set_active(this._monitors.indexOf(monitor));

        // Position option
        let position = this._settings.get_enum('dock-position');

        switch (position) {
            case 0:
                this._builder.get_object('position_top_button').set_active(true);
                break;
            case 1:
                this._builder.get_object('position_right_button').set_active(true);
                break;
            case 2:
                this._builder.get_object('position_bottom_button').set_active(true);
                break;
            case 3:
                this._builder.get_object('position_left_button').set_active(true);
                break;
        }

        if (this._rtl) {
            /* Left is Right in rtl as a setting */
            this._builder.get_object('position_left_button').set_label(__('Right'));
            this._builder.get_object('position_right_button').set_label(__('Left'));
        }

        // Intelligent autohide options
        this._settings.bind('dock-fixed',
                            this._builder.get_object('intelligent_autohide_switch'),
                            'active',
                            Gio.SettingsBindFlags.INVERT_BOOLEAN);
        this._settings.bind('dock-fixed',
                            this._builder.get_object('intelligent_autohide_button'),
                            'sensitive',
                            Gio.SettingsBindFlags.INVERT_BOOLEAN);
        this._settings.bind('autohide',
                            this._builder.get_object('autohide_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('autohide-in-fullscreen',
                            this._builder.get_object('autohide_enable_in_fullscreen_checkbutton'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('require-pressure-to-show',
                            this._builder.get_object('require_pressure_checkbutton'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('intellihide',
                            this._builder.get_object('intellihide_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('animation-time',
                            this._builder.get_object('animation_duration_spinbutton'),
                            'value',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('hide-delay',
                            this._builder.get_object('hide_timeout_spinbutton'),
                            'value',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-delay',
                            this._builder.get_object('show_timeout_spinbutton'),
                            'value',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('pressure-threshold',
                            this._builder.get_object('pressure_threshold_spinbutton'),
                            'value',
                            Gio.SettingsBindFlags.DEFAULT);

        //this._builder.get_object('animation_duration_spinbutton').set_value(this._settings.get_double('animation-time'));

        // Create dialog for intelligent autohide advanced settings
        this._builder.get_object('intelligent_autohide_button').connect('clicked', Lang.bind(this, function() {

            let dialog = new Gtk.Dialog({ title: __('Intelligent autohide customization'),
                                          transient_for: this.widget.get_toplevel(),
                                          use_header_bar: true,
                                          modal: true });

            // GTK+ leaves positive values for application-defined response ids.
            // Use +1 for the reset action
            dialog.add_button(__('Reset to defaults'), 1);

            let box = this._builder.get_object('intelligent_autohide_advanced_settings_box');
            dialog.get_content_area().add(box);

            this._settings.bind('intellihide',
                            this._builder.get_object('intellihide_mode_box'),
                            'sensitive',
                            Gio.SettingsBindFlags.GET);

            // intellihide mode

            let intellihideModeRadioButtons = [
                this._builder.get_object('all_windows_radio_button'),
                this._builder.get_object('focus_application_windows_radio_button'),
                this._builder.get_object('maximized_windows_radio_button')
            ];

            intellihideModeRadioButtons[this._settings.get_enum('intellihide-mode')].set_active(true);

            this._settings.bind('autohide',
                            this._builder.get_object('require_pressure_checkbutton'),
                            'sensitive',
                            Gio.SettingsBindFlags.GET);

            this._settings.bind('autohide',
                            this._builder.get_object('autohide_enable_in_fullscreen_checkbutton'),
                            'sensitive',
                            Gio.SettingsBindFlags.GET);

            this._settings.bind('require-pressure-to-show',
                                this._builder.get_object('show_timeout_spinbutton'),
                                'sensitive',
                                Gio.SettingsBindFlags.INVERT_BOOLEAN);
            this._settings.bind('require-pressure-to-show',
                                this._builder.get_object('show_timeout_label'),
                                'sensitive',
                                Gio.SettingsBindFlags.INVERT_BOOLEAN);
            this._settings.bind('require-pressure-to-show',
                                this._builder.get_object('pressure_threshold_spinbutton'),
                                'sensitive',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('require-pressure-to-show',
                                this._builder.get_object('pressure_threshold_label'),
                                'sensitive',
                                Gio.SettingsBindFlags.DEFAULT);

            dialog.connect('response', Lang.bind(this, function(dialog, id) {
                if (id == 1) {
                    // restore default settings for the relevant keys
                    let keys = ['intellihide', 'autohide', 'intellihide-mode', 'autohide-in-fullscreen', 'require-pressure-to-show',
                                'animation-time', 'show-delay', 'hide-delay', 'pressure-threshold'];
                    keys.forEach(function(val) {
                        this._settings.set_value(val, this._settings.get_default_value(val));
                    }, this);
                    intellihideModeRadioButtons[this._settings.get_enum('intellihide-mode')].set_active(true);
                } else {
                    // remove the settings box so it doesn't get destroyed;
                    dialog.get_content_area().remove(box);
                    dialog.destroy();
                }
                return;
            }));

            dialog.show_all();

        }));

        // size options
        this._builder.get_object('dock_size_scale').set_value(this._settings.get_double('height-fraction'));
        this._builder.get_object('dock_size_scale').add_mark(0.9, Gtk.PositionType.TOP, null);
        let icon_size_scale = this._builder.get_object('icon_size_scale');
        icon_size_scale.set_range(8, DEFAULT_ICONS_SIZES[0]);
        icon_size_scale.set_value(this._settings.get_int('dash-max-icon-size'));
        DEFAULT_ICONS_SIZES.forEach(function(val) {
             icon_size_scale.add_mark(val, Gtk.PositionType.TOP, val.toString());
        });

        // Corrent for rtl languages
        if (this._rtl) {
            // Flip value position: this is not done automatically
            this._builder.get_object('dock_size_scale').set_value_pos(Gtk.PositionType.LEFT);
            icon_size_scale.set_value_pos(Gtk.PositionType.LEFT);
            // I suppose due to a bug, having a more than one mark and one above a value of 100
            // makes the rendering of the marks wrong in rtl. This doesn't happen setting the scale as not flippable
            // and then manually inverting it
            icon_size_scale.set_flippable(false);
            icon_size_scale.set_inverted(true);
        }

        this._settings.bind('icon-size-fixed', this._builder.get_object('icon_size_fixed_checkbutton'), 'active', Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('extend-height', this._builder.get_object('dock_size_extend_checkbutton'), 'active', Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('extend-height', this._builder.get_object('dock_size_scale'), 'sensitive', Gio.SettingsBindFlags.INVERT_BOOLEAN);


        // Apps panel

        this._settings.bind('show-running',
                            this._builder.get_object('show_running_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('isolate-workspaces',
                            this._builder.get_object('application_button_isolation_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('isolate-monitors',
                            this._builder.get_object('application_button_monitor_isolation_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-windows-preview',
                            this._builder.get_object('windows_preview_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('multi-monitor',
                            this._builder.get_object('multi_monitor_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-favorites',
                            this._builder.get_object('show_favorite_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-show-apps-button',
                            this._builder.get_object('show_applications_button_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-apps-at-top',
                            this._builder.get_object('application_button_first_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-show-apps-button',
                            this._builder.get_object('application_button_first_button'),
                            'sensitive',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('animate-show-apps',
                            this._builder.get_object('application_button_animation_button'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('show-show-apps-button',
                            this._builder.get_object('application_button_animation_button'),
                            'sensitive',
                            Gio.SettingsBindFlags.DEFAULT);


        // Behavior panel

        this._settings.bind('hot-keys',
                            this._builder.get_object('hot_keys_switch'),
                            'active',
                            Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('hot-keys',
                            this._builder.get_object('overlay_button'),
                            'sensitive',
                            Gio.SettingsBindFlags.DEFAULT);

        this._builder.get_object('click_action_combo').set_active(this._settings.get_enum('click-action'));
        this._builder.get_object('click_action_combo').connect('changed', Lang.bind (this, function(widget) {
            this._settings.set_enum('click-action', widget.get_active());
        }));

        this._builder.get_object('scroll_action_combo').set_active(this._settings.get_enum('scroll-action'));
        this._builder.get_object('scroll_action_combo').connect('changed', Lang.bind (this, function(widget) {
            this._settings.set_enum('scroll-action', widget.get_active());
        }));

        this._builder.get_object('shift_click_action_combo').connect('changed', Lang.bind (this, function(widget) {
            this._settings.set_enum('shift-click-action', widget.get_active());
        }));

        this._builder.get_object('middle_click_action_combo').connect('changed', Lang.bind (this, function(widget) {
            this._settings.set_enum('middle-click-action', widget.get_active());
        }));
        this._builder.get_object('shift_middle_click_action_combo').connect('changed', Lang.bind (this, function(widget) {
            this._settings.set_enum('shift-middle-click-action', widget.get_active());
        }));

        // Create dialog for number overlay options
        this._builder.get_object('overlay_button').connect('clicked', Lang.bind(this, function() {

            let dialog = new Gtk.Dialog({ title: __('Show dock and application numbers'),
                                          transient_for: this.widget.get_toplevel(),
                                          use_header_bar: true,
                                          modal: true });

            // GTK+ leaves positive values for application-defined response ids.
            // Use +1 for the reset action
            dialog.add_button(__('Reset to defaults'), 1);

            let box = this._builder.get_object('box_overlay_shortcut');
            dialog.get_content_area().add(box);

            this._builder.get_object('overlay_switch').set_active(this._settings.get_boolean('hotkeys-overlay'));
            this._builder.get_object('show_dock_switch').set_active(this._settings.get_boolean('hotkeys-show-dock'));

            // We need to update the shortcut 'strv' when the text is modified
            this._settings.connect('changed::shortcut-text', Lang.bind(this, function() {setShortcut(this._settings);}));
            this._settings.bind('shortcut-text',
                                this._builder.get_object('shortcut_entry'),
                                'text',
                                Gio.SettingsBindFlags.DEFAULT);

            this._settings.bind('hotkeys-overlay',
                                this._builder.get_object('overlay_switch'),
                                'active',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('hotkeys-show-dock',
                                this._builder.get_object('show_dock_switch'),
                                'active',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('shortcut-timeout',
                                this._builder.get_object('timeout_spinbutton'),
                                'value',
                                Gio.SettingsBindFlags.DEFAULT);

            dialog.connect('response', Lang.bind(this, function(dialog, id) {
                if (id == 1) {
                    // restore default settings for the relevant keys
                    let keys = ['shortcut-text', 'hotkeys-overlay', 'hotkeys-show-dock', 'shortcut-timeout'];
                    keys.forEach(function(val) {
                        this._settings.set_value(val, this._settings.get_default_value(val));
                    }, this);
                } else {
                    // remove the settings box so it doesn't get destroyed;
                    dialog.get_content_area().remove(box);
                    dialog.destroy();
                }
                return;
            }));

            dialog.show_all();

        }));

        // Create dialog for middle-click options
        this._builder.get_object('middle_click_options_button').connect('clicked', Lang.bind(this, function() {

            let dialog = new Gtk.Dialog({ title: __('Customize middle-click behavior'),
                                          transient_for: this.widget.get_toplevel(),
                                          use_header_bar: true,
                                          modal: true });

            // GTK+ leaves positive values for application-defined response ids.
            // Use +1 for the reset action
            dialog.add_button(__('Reset to defaults'), 1);

            let box = this._builder.get_object('box_middle_click_options');
            dialog.get_content_area().add(box);

            this._builder.get_object('shift_click_action_combo').set_active(this._settings.get_enum('shift-click-action'));

            this._builder.get_object('middle_click_action_combo').set_active(this._settings.get_enum('middle-click-action'));

            this._builder.get_object('shift_middle_click_action_combo').set_active(this._settings.get_enum('shift-middle-click-action'));

            this._settings.bind('shift-click-action',
                                this._builder.get_object('shift_click_action_combo'),
                                'active-id',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('middle-click-action',
                                this._builder.get_object('middle_click_action_combo'),
                                'active-id',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('shift-middle-click-action',
                                this._builder.get_object('shift_middle_click_action_combo'),
                                'active-id',
                                Gio.SettingsBindFlags.DEFAULT);

            dialog.connect('response', Lang.bind(this, function(dialog, id) {
                if (id == 1) {
                    // restore default settings for the relevant keys
                    let keys = ['shift-click-action', 'middle-click-action', 'shift-middle-click-action'];
                    keys.forEach(function(val) {
                        this._settings.set_value(val, this._settings.get_default_value(val));
                    }, this);
                    this._builder.get_object('shift_click_action_combo').set_active(this._settings.get_enum('shift-click-action'));
                    this._builder.get_object('middle_click_action_combo').set_active(this._settings.get_enum('middle-click-action'));
                    this._builder.get_object('shift_middle_click_action_combo').set_active(this._settings.get_enum('shift-middle-click-action'));
                } else {
                    // remove the settings box so it doesn't get destroyed;
                    dialog.get_content_area().remove(box);
                    dialog.destroy();
                }
                return;
            }));

            dialog.show_all();

        }));

        // Appearance Panel

        this._settings.bind('apply-custom-theme', this._builder.get_object('customize_theme'), 'sensitive', Gio.SettingsBindFlags.INVERT_BOOLEAN | Gio.SettingsBindFlags.GET);
        this._settings.bind('apply-custom-theme', this._builder.get_object('builtin_theme_switch'), 'active', Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('custom-theme-shrink', this._builder.get_object('shrink_dash_switch'), 'active', Gio.SettingsBindFlags.DEFAULT);

        // Running indicators
        this._builder.get_object('running_indicators_combo').set_active(
            this._settings.get_enum('running-indicator-style')
        );
        this._builder.get_object('running_indicators_combo').connect(
            'changed',
            Lang.bind (this, function(widget) {
                this._settings.set_enum('running-indicator-style', widget.get_active());
            })
        );

        if (this._settings.get_enum('running-indicator-style') == RunningIndicatorStyle.DEFAULT)
            this._builder.get_object('running_indicators_advance_settings_button').set_sensitive(false);

        this._settings.connect('changed::running-indicator-style', Lang.bind(this, function() {
           if (this._settings.get_enum('running-indicator-style') == RunningIndicatorStyle.DEFAULT)
               this._builder.get_object('running_indicators_advance_settings_button').set_sensitive(false);
           else
               this._builder.get_object('running_indicators_advance_settings_button').set_sensitive(true);
        }));

        // Create dialog for running indicators advanced settings
        this._builder.get_object('running_indicators_advance_settings_button').connect('clicked', Lang.bind(this, function() {

            let dialog = new Gtk.Dialog({ title: __('Customize running indicators'),
                                          transient_for: this.widget.get_toplevel(),
                                          use_header_bar: true,
                                          modal: true });

            let box = this._builder.get_object('running_dots_advance_settings_box');
            dialog.get_content_area().add(box);

            this._settings.bind('running-indicator-dominant-color',
                                this._builder.get_object('dominant_color_switch'),
                                'active',
                                Gio.SettingsBindFlags.DEFAULT);

            this._settings.bind('custom-theme-customize-running-dots',
                                this._builder.get_object('dot_style_switch'),
                                'active',
                                Gio.SettingsBindFlags.DEFAULT);
            this._settings.bind('custom-theme-customize-running-dots',
                                this._builder.get_object('dot_style_settings_box'),
                                'sensitive', Gio.SettingsBindFlags.DEFAULT);

            let rgba = new Gdk.RGBA();
            rgba.parse(this._settings.get_string('custom-theme-running-dots-color'));
            this._builder.get_object('dot_color_colorbutton').set_rgba(rgba);

            this._builder.get_object('dot_color_colorbutton').connect('notify::color', Lang.bind(this, function(button) {
                let rgba = button.get_rgba();
                let css = rgba.to_string();
                let hexString = cssHexString(css);
                this._settings.set_string('custom-theme-running-dots-color', hexString);
            }));

            rgba.parse(this._settings.get_string('custom-theme-running-dots-border-color'));
            this._builder.get_object('dot_border_color_colorbutton').set_rgba(rgba);

            this._builder.get_object('dot_border_color_colorbutton').connect('notify::color', Lang.bind(this, function(button) {
                let rgba = button.get_rgba();
                let css = rgba.to_string();
                let hexString = cssHexString(css);
                this._settings.set_string('custom-theme-running-dots-border-color', hexString);
            }));

            this._settings.bind('custom-theme-running-dots-border-width',
                                this._builder.get_object('dot_border_width_spin_button'),
                                'value',
                                Gio.SettingsBindFlags.DEFAULT);


            dialog.connect('response', Lang.bind(this, function(dialog, id) {
                // remove the settings box so it doesn't get destroyed;
                dialog.get_content_area().remove(box);
                dialog.destroy();
                return;
            }));

            dialog.show_all();

        }));

        this._settings.bind('custom-background-color', this._builder.get_object('custom_background_color_switch'), 'active', Gio.SettingsBindFlags.DEFAULT);
        this._settings.bind('custom-background-color', this._builder.get_object('custom_background_color'), 'sensitive', Gio.SettingsBindFlags.DEFAULT);

        let rgba = new Gdk.RGBA();
        rgba.parse(this._settings.get_string('background-color'));
        this._builder.get_object('custom_background_color').set_rgba(rgba);

        this._builder.get_object('custom_background_color').connect('notify::color', Lang.bind(this, function(button) {
            let rgba = button.get_rgba();
            let css = rgba.to_string();
            let hexString = cssHexString(css);
            this._settings.set_string('background-color', hexString);
        }));

        // Opacity
        this._builder.get_object('customize_opacity_combo').set_active(
            this._settings.get_enum('transparency-mode')
        );
        this._builder.get_object('customize_opacity_combo').connect(
            'changed',
            Lang.bind (this, function(widget) {
                this._settings.set_enum('transparency-mode', widget.get_active());
            })
        );

        this._builder.get_object('custom_opacity_scale').set_value(this._settings.get_double('background-opacity'));

        if (this._settings.get_enum('transparency-mode') !== TransparencyMode.FIXED)
            this._builder.get_object('custom_opacity_scale').set_sensitive(false);

        this._settings.connect('changed::transparency-mode', Lang.bind(this, function() {
           if (this._settings.get_enum('transparency-mode') !== TransparencyMode.FIXED)
               this._builder.get_object('custom_opacity_scale').set_sensitive(false);
           else
               this._builder.get_object('custom_opacity_scale').set_sensitive(true);
        }));

        if (this._settings.get_enum('transparency-mode') !== TransparencyMode.ADAPTIVE &&
            this._settings.get_enum('transparency-mode') !== TransparencyMode.DYNAMIC) {
            this._builder.get_object('dynamic_opacity_button').set_sensitive(false);
        }

        this._settings.connect('changed::transparency-mode', Lang.bind(this, function() {
            if (this._settings.get_enum('transparency-mode') !== TransparencyMode.ADAPTIVE &&
                this._settings.get_enum('transparency-mode') !== TransparencyMode.DYNAMIC) {
                this._builder.get_object('dynamic_opacity_button').set_sensitive(false);
            }
            else {
                this._builder.get_object('dynamic_opacity_button').set_sensitive(true);
            }
        }));

        // Create dialog for transparency advanced settings
        this._builder.get_object('dynamic_opacity_button').connect('clicked', Lang.bind(this, function() {

            let dialog = new Gtk.Dialog({ title: __('Cutomize opacity'),
                                          transient_for: this.widget.get_toplevel(),
                                          use_header_bar: true,
                                          modal: true });

            let box = this._builder.get_object('advanced_transparency_dialog');
            dialog.get_content_area().add(box);

            this._settings.bind(
                'customize-alphas',
                this._builder.get_object('customize_alphas_switch'),
                'active',
                Gio.SettingsBindFlags.DEFAULT
            );
            this._settings.bind(
                'customize-alphas',
                this._builder.get_object('min_alpha_scale'),
                'sensitive',
                Gio.SettingsBindFlags.DEFAULT
            );
            this._settings.bind(
                'customize-alphas',
                this._builder.get_object('max_alpha_scale'),
                'sensitive',
                Gio.SettingsBindFlags.DEFAULT
            );

            this._builder.get_object('min_alpha_scale').set_value(
                this._settings.get_double('min-alpha')
            );
            this._builder.get_object('max_alpha_scale').set_value(
                this._settings.get_double('max-alpha')
            );

            dialog.connect('response', Lang.bind(this, function(dialog, id) {
                // remove the settings box so it doesn't get destroyed;
                dialog.get_content_area().remove(box);
                dialog.destroy();
                return;
            }));

            dialog.show_all();
        }));


        this._settings.bind('unity-backlit-items',
            this._builder.get_object('unity_backlit_items_switch'),
            'active', Gio.SettingsBindFlags.DEFAULT
        );

        this._settings.bind('force-straight-corner',
            this._builder.get_object('force_straight_corner_switch'),
            'active', Gio.SettingsBindFlags.DEFAULT);

        // About Panel

        this._builder.get_object('extension_version').set_label(Me.metadata.version.toString());
    },

    /**
     * Object containing all signals defined in the glade file
     */
    _SignalHandler: {
        dock_display_combo_changed_cb: function(combo) {
            this._settings.set_int('preferred-monitor', this._monitors[combo.get_active()]);
        },

        position_top_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('dock-position', 0);
        },

        position_right_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('dock-position', 1);
        },

        position_bottom_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('dock-position', 2);
        },

        position_left_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('dock-position', 3);
        },

        icon_size_combo_changed_cb: function(combo) {
            this._settings.set_int('dash-max-icon-size', this._allIconSizes[combo.get_active()]);
        },

        dock_size_scale_format_value_cb: function(scale, value) {
            return Math.round(value*100)+ ' %';
        },

        dock_size_scale_value_changed_cb: function(scale) {
            // Avoid settings the size consinuosly
            if (this._dock_size_timeout > 0)
                Mainloop.source_remove(this._dock_size_timeout);

            this._dock_size_timeout = Mainloop.timeout_add(SCALE_UPDATE_TIMEOUT, Lang.bind(this, function() {
                this._settings.set_double('height-fraction', scale.get_value());
                this._dock_size_timeout = 0;
                return GLib.SOURCE_REMOVE;
            }));
        },

        icon_size_scale_format_value_cb: function(scale, value) {
            return value+ ' px';
        },

        icon_size_scale_value_changed_cb: function(scale) {
            // Avoid settings the size consinuosly
            if (this._icon_size_timeout > 0)
                Mainloop.source_remove(this._icon_size_timeout);

            this._icon_size_timeout = Mainloop.timeout_add(SCALE_UPDATE_TIMEOUT, Lang.bind(this, function() {
                this._settings.set_int('dash-max-icon-size', scale.get_value());
                this._icon_size_timeout = 0;
                return GLib.SOURCE_REMOVE;
            }));
        },

        custom_opacity_scale_value_changed_cb: function(scale) {
            // Avoid settings the opacity consinuosly as it's change is animated
            if (this._opacity_timeout > 0)
                Mainloop.source_remove(this._opacity_timeout);

            this._opacity_timeout = Mainloop.timeout_add(SCALE_UPDATE_TIMEOUT, Lang.bind(this, function() {
                this._settings.set_double('background-opacity', scale.get_value());
                this._opacity_timeout = 0;
                return GLib.SOURCE_REMOVE;
            }));
        },

        min_opacity_scale_value_changed_cb: function(scale) {
            // Avoid settings the opacity consinuosly as it's change is animated
            if (this._opacity_timeout > 0)
                Mainloop.source_remove(this._opacity_timeout);

            this._opacity_timeout = Mainloop.timeout_add(SCALE_UPDATE_TIMEOUT, Lang.bind(this, function() {
                this._settings.set_double('min-alpha', scale.get_value());
                this._opacity_timeout = 0;
                return GLib.SOURCE_REMOVE;
            }));
        },

        max_opacity_scale_value_changed_cb: function(scale) {
            // Avoid settings the opacity consinuosly as it's change is animated
            if (this._opacity_timeout > 0)
                Mainloop.source_remove(this._opacity_timeout);

            this._opacity_timeout = Mainloop.timeout_add(SCALE_UPDATE_TIMEOUT, Lang.bind(this, function() {
                this._settings.set_double('max-alpha', scale.get_value());
                this._opacity_timeout = 0;
                return GLib.SOURCE_REMOVE;
            }));
        },

        custom_opacity_scale_format_value_cb: function(scale, value) {
            return Math.round(value*100) + ' %';
        },

        min_opacity_scale_format_value_cb: function(scale, value) {
            return Math.round(value*100) + ' %';
        },

        max_opacity_scale_format_value_cb: function(scale, value) {
            return Math.round(value*100) + ' %';
        },

        all_windows_radio_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('intellihide-mode', 0);
        },

        focus_application_windows_radio_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('intellihide-mode', 1);
        },

        maximized_windows_radio_button_toggled_cb: function(button) {
            if (button.get_active())
                this._settings.set_enum('intellihide-mode', 2);
        }
    }
});

function init() {
    Convenience.initTranslations();
}

function buildPrefsWidget() {
    let settings = new Settings();
    let widget = settings.widget;
    widget.show_all();
    return widget;
}
