File: preference.vala

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deepin-terminal 5.0.0%2Bds1-3
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/* -*- Mode: Vala; indent-tabs-mode: nil; tab-width: 4 -*-
 * -*- coding: utf-8 -*-
 *
 * Copyright (C) 2011 ~ 2018 Deepin, Inc.
 *               2011 ~ 2018 Wang Yong
 *
 * Author:     Wang Yong <wangyong@deepin.com>
 * Maintainer: Wang Yong <wangyong@deepin.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

using Animation;
using Gee;
using Gtk;
using Widgets;

namespace Widgets {
    public class Preference : Widgets.Dialog {
        public ArrayList<string> font_names;
        public ArrayList<string> window_state_list;
        public ArrayList<string> window_state_name_list;
        public Widgets.DropdownTextButton font_combox;
        public Widgets.DropdownTextButton window_combox;
        public Gtk.Label close_other_windows_key_label;
        public Gtk.Label close_window_key_label;
        public Gtk.Label close_workspace_key_label;
        public Gtk.Label copy_key_label;
        public Gtk.Label cursor_style_label;
        public Gtk.Label display_hotkey_terminal_key_label;
        public Gtk.Label font_label;
        public Gtk.Label fullscreen_key_label;
        public Gtk.Label jump_to_next_command_key_label;
        public Gtk.Label jump_to_previous_command_key_label;
        public Gtk.Label new_workspace_key_label;
        public Gtk.Label next_workspace_key_label;
        public Gtk.Label opacity_label;
        public Gtk.Label open_key_label;
        public Gtk.Label paste_key_label;
        public Gtk.Label previous_workspace_key_label;
        public Gtk.Label rename_title_key_label;
        public Gtk.Label search_key_label;
        public Gtk.Label select_all_key_label;
        public Gtk.Label select_down_window_key_label;
        public Gtk.Label select_left_window_key_label;
        public Gtk.Label select_right_window_key_label;
        public Gtk.Label select_up_window_key_label;
        public Gtk.Label show_command_key_label;
        public Gtk.Label show_remote_manage_key_label;
        public Gtk.Label split_horizontally_key_label;
        public Gtk.Label split_vertically_key_label;
        public Gtk.Label theme_label;
        public Gtk.Label window_label;
        public Gtk.Label blur_background_label;
        public Gtk.Label zoom_in_key_label;
        public Gtk.Label zoom_out_key_label;
        public Gtk.Label zoom_reset_key_label;
        public ScrolledWindow scrolledwindow;
        public ShortcutEntry close_other_windows_key_entry;
        public ShortcutEntry close_window_key_entry;
        public ShortcutEntry close_workspace_key_entry;
        public ShortcutEntry copy_key_entry;
        public ShortcutEntry display_hotkey_terminal_key_entry;
        public ShortcutEntry fullscreen_key_entry;
        public ShortcutEntry jump_to_next_command_key_entry;
        public ShortcutEntry jump_to_previous_command_key_entry;
        public ShortcutEntry new_workspace_key_entry;
        public ShortcutEntry next_workspace_key_entry;
        public ShortcutEntry open_key_entry;
        public ShortcutEntry paste_key_entry;
        public ShortcutEntry previous_workspace_key_entry;
        public ShortcutEntry rename_title_key_entry;
        public ShortcutEntry search_key_entry;
        public ShortcutEntry select_all_key_entry;
        public ShortcutEntry select_down_window_key_entry;
        public ShortcutEntry select_left_window_key_entry;
        public ShortcutEntry select_right_window_key_entry;
        public ShortcutEntry select_up_window_key_entry;
        public ShortcutEntry show_command_key_entry;
        public ShortcutEntry show_remote_manage_key_entry;
        public ShortcutEntry split_horizontally_key_entry;
        public ShortcutEntry split_vertically_key_entry;
        public ShortcutEntry zoom_in_key_entry;
        public ShortcutEntry zoom_out_key_entry;
        public ShortcutEntry zoom_reset_key_entry;
        public Widgets.CheckButton cursor_auto_hide_checkbutton;
        public Widgets.CheckButton copy_on_select_checkbutton;
        public Widgets.CheckButton cursor_blink_checkbutton;
        public Widgets.CheckButton hide_quakewindow_after_lost_focus_checkbutton;
        public Widgets.CheckButton scroll_on_key_checkbutton;
        public Widgets.CheckButton scroll_on_out_checkbutton;
        public Widgets.CheckButton blur_background_checkbutton;
        public Widgets.ConfigWindow parent_window;
        public Widgets.CursorToggleButton cursor_style_button;
        public Widgets.ProgressBar opacity_progressbar;
        public Widgets.SpinButton font_size_spinbutton;
        public double timer_end_value;
        public double timer_start_value;
        public AnimateTimer timer;
        public Gtk.Box content_box;
        public Gtk.Widget? focus_widget;
        public Widgets.PreferenceSlidebar slidebar;
        public bool in_animation = false;
        public int checkbutton_margin_right = 5;
        public int checkbutton_margin_top = 4;
        public int first_segment_margin_left = 20;
        public int grid_height = 24;
        public int option_widget_margin_left = 40;
        public int option_widget_margin_right = 10;
        public int preference_name_width = 180;
        public int preference_split_line_margin_left = 2;
        public int preference_widget_width = Constant.PREFERENCE_WIDGET_WIDTH;
        public int reset_button_margin = 35;
        public int second_segment_margin_left = 30;
        public int segment_margin_bottom = 5;
        public int segment_margin_top = 10;
        public int slidebar_width = Constant.PREFERENCE_SLIDEBAR_WIDTH;
        public int timer_interval = 400;

        public Preference(Widgets.ConfigWindow window, Gtk.Widget? widget) {
            Intl.bindtextdomain(GETTEXT_PACKAGE, "/usr/share/locale");

            set_init_size(740, 670);

            theme_label = create_label();
            opacity_label = create_label(_("Opacity:"));
            opacity_progressbar = new Widgets.ProgressBar(opacity);
            font_label = create_label();
            font_combox = create_combox_text();
            window_label = create_label();
            window_combox = create_combox_text();
            blur_background_label = create_label();

            copy_key_label = create_label();
            copy_key_entry = new ShortcutEntry();
            paste_key_label = create_label();
            paste_key_entry = new ShortcutEntry();
            open_key_label = create_label();
            open_key_entry = new ShortcutEntry();
            search_key_label = create_label();
            search_key_entry = new ShortcutEntry();
            zoom_in_key_label = create_label();
            zoom_in_key_entry = new ShortcutEntry();
            zoom_out_key_label = create_label();
            zoom_out_key_entry = new ShortcutEntry();
            zoom_reset_key_label = create_label();
            zoom_reset_key_entry = new ShortcutEntry();
            jump_to_next_command_key_label = create_label();
            jump_to_next_command_key_entry = new ShortcutEntry();
            jump_to_previous_command_key_label = create_label();
            jump_to_previous_command_key_entry = new ShortcutEntry();
            select_all_key_label = create_label();
            select_all_key_entry = new ShortcutEntry();
            new_workspace_key_label = create_label();
            new_workspace_key_entry = new ShortcutEntry();
            close_workspace_key_label = create_label();
            close_workspace_key_entry = new ShortcutEntry();
            previous_workspace_key_label = create_label();
            previous_workspace_key_entry = new ShortcutEntry();
            next_workspace_key_label = create_label();
            next_workspace_key_entry = new ShortcutEntry();
            split_vertically_key_label = create_label();
            split_vertically_key_entry = new ShortcutEntry();
            split_horizontally_key_label = create_label();
            split_horizontally_key_entry = new ShortcutEntry();
            select_up_window_key_label = create_label();
            select_up_window_key_entry = new ShortcutEntry();
            select_down_window_key_label = create_label();
            select_down_window_key_entry = new ShortcutEntry();
            select_left_window_key_label = create_label();
            select_left_window_key_entry = new ShortcutEntry();
            select_right_window_key_label = create_label();
            select_right_window_key_entry = new ShortcutEntry();
            close_window_key_label = create_label();
            close_window_key_entry = new ShortcutEntry();
            close_other_windows_key_label = create_label();
            close_other_windows_key_entry = new ShortcutEntry();
            fullscreen_key_label = create_label();
            fullscreen_key_entry = new ShortcutEntry();
            rename_title_key_label = create_label();
            rename_title_key_entry = new ShortcutEntry();
            display_hotkey_terminal_key_label = create_label();
            display_hotkey_terminal_key_entry = new ShortcutEntry();
            show_command_key_label = create_label();
            show_remote_manage_key_label = create_label();
            show_command_key_entry = new ShortcutEntry();
            show_remote_manage_key_entry = new ShortcutEntry();

            cursor_style_label = create_label(_("Cursor style:"));
            cursor_style_button = new Widgets.CursorToggleButton();
            cursor_blink_checkbutton = new Widgets.CheckButton();
            cursor_auto_hide_checkbutton = new Widgets.CheckButton();
            copy_on_select_checkbutton = new Widgets.CheckButton();
            scroll_on_key_checkbutton = new Widgets.CheckButton();
            scroll_on_out_checkbutton = new Widgets.CheckButton();
            blur_background_checkbutton = new Widgets.CheckButton();
            hide_quakewindow_after_lost_focus_checkbutton = new Widgets.CheckButton();

            font_size_spinbutton = create_spinbutton(Constant.FONT_MIN_SIZE, Constant.FONT_MAX_SIZE, 1);

            parent_window = window;

            focus_widget = widget;

            var titlebar = new Titlebar();
            titlebar.close_button.clicked.connect((b) => {
                    this.destroy();
                });

            var box = new Gtk.Box(Gtk.Orientation.VERTICAL, 0);
            box.pack_start(titlebar, false, false, 0);

            destroy.connect((w) => {
                    if (focus_widget != null) {
                        focus_widget.grab_focus();
                    }
                });

            var preference_box = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 0);
            add_widget(preference_box);

            slidebar = new PreferenceSlidebar();
            preference_box.pack_start(slidebar, false, false, 0);
            preference_box.set_size_request(slidebar_width, -1);

            scrolledwindow = new ScrolledWindow(null, null);
            scrolledwindow.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);
            scrolledwindow.set_shadow_type(Gtk.ShadowType.NONE);
            scrolledwindow.get_style_context().add_class("scrolledwindow");
            scrolledwindow.get_vscrollbar().get_style_context().add_class("light_scrollbar");
            box.pack_start(scrolledwindow, true, true, 0);

            preference_box.pack_start(box, true, true, 0);
            content_box = new Gtk.Box(Gtk.Orientation.VERTICAL, 0);
            content_box.margin_end = 20;
            scrolledwindow.add(content_box);

            var basic_segment = get_first_segment(_("Basic"));
            content_box.pack_start(basic_segment, false, false, 0);

            var theme_segment = get_second_segment(_("Interface"));
            content_box.pack_start(theme_segment, false, false, 0);

            var theme_grid = new Gtk.Grid();
            content_box.pack_start(theme_grid, false, false, 0);

            var opacity_grid = new Gtk.Grid();
            content_box.pack_start(opacity_grid, false, false, 0);

            double opacity = 0;
            try {
                opacity = parent_window.config.config_file.get_double("general", "opacity");
            } catch (GLib.KeyFileError e) {
                print("Preference get window config: %s\n", e.message);
            }

            opacity_progressbar.set_percent(opacity);
            opacity_progressbar.update.connect((w, percent) => {
                    parent_window.config.load_config();
                    parent_window.config.config_file.set_double("general", "opacity", percent);
                    parent_window.config.save();

                    parent_window.config.update();
                });
            adjust_option_widgets(opacity_label, opacity_progressbar);
            grid_attach(opacity_grid, opacity_label, 0, 0, preference_name_width, grid_height);
            grid_attach_next_to(opacity_grid, opacity_progressbar, opacity_label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
            opacity_label.get_style_context().add_class("preference_title");

            var font_grid = new Gtk.Grid();
            content_box.pack_start(font_grid, false, false, 0);

            int num;
            string[] mono_or_dot_fonts = (string[]) list_mono_or_dot_fonts(out num);
            font_names = new ArrayList<string>();
            for (int i = 0; i < num; i++) {
                font_names.add(mono_or_dot_fonts[i]);
            }
            font_names.sort();

            create_combox_row(font_label, font_combox, _("Font:"), font_grid, font_names, "general", "font");
            create_follow_spinbutton_row(font_size_spinbutton, _("Font size:"), font_label, font_grid, "general", "font_size");

            var hotkey_segment = get_first_segment(_("Shortcuts"));
            content_box.pack_start(hotkey_segment, false, false, 0);

            var terminal_key_segment = get_second_segment(_("Terminal"));
            content_box.pack_start(terminal_key_segment, false, false, 0);

            var terminal_key_grid = new Gtk.Grid();
            content_box.pack_start(terminal_key_grid, false, false, 0);

            create_key_row(copy_key_label, copy_key_entry, _("Copy:"), terminal_key_grid, "shortcut", "copy");
            create_follow_key_row(paste_key_label, paste_key_entry, _("Paste:"), copy_key_label, terminal_key_grid, "shortcut", "paste");
            create_follow_key_row(open_key_label, open_key_entry, _("Open:"), paste_key_label, terminal_key_grid, "shortcut", "open");
            create_follow_key_row(search_key_label, search_key_entry, _("Search:"), open_key_label, terminal_key_grid, "shortcut", "search");
            create_follow_key_row(zoom_in_key_label, zoom_in_key_entry, _("Zoom in:"), search_key_label, terminal_key_grid, "shortcut", "zoom_in");
            create_follow_key_row(zoom_out_key_label, zoom_out_key_entry, _("Zoom out:"), zoom_in_key_label, terminal_key_grid, "shortcut", "zoom_out");
            create_follow_key_row(zoom_reset_key_label, zoom_reset_key_entry, _("Default size:"), zoom_out_key_label, terminal_key_grid, "shortcut", "default_size");
            create_follow_key_row(jump_to_next_command_key_label, jump_to_next_command_key_entry, _("Jump to next command:"), zoom_reset_key_label, terminal_key_grid, "shortcut", "jump_to_next_command");
            create_follow_key_row(jump_to_previous_command_key_label, jump_to_previous_command_key_entry, _("Jump to previous command:"), jump_to_next_command_key_label, terminal_key_grid, "shortcut", "jump_to_previous_command");
            create_follow_key_row(select_all_key_label, select_all_key_entry, _("Select all:"), jump_to_previous_command_key_label, terminal_key_grid, "shortcut", "select_all");

            var workspace_key_segment = get_second_segment(_("Workspace"));
            content_box.pack_start(workspace_key_segment, false, false, 0);

            var workspace_key_grid = new Gtk.Grid();
            content_box.pack_start(workspace_key_grid, false, false, 0);

            create_key_row(new_workspace_key_label, new_workspace_key_entry, _("New workspace:"), workspace_key_grid, "shortcut", "new_workspace");
            create_follow_key_row(close_workspace_key_label, close_workspace_key_entry, _("Close workspace:"), new_workspace_key_label, workspace_key_grid, "shortcut", "close_workspace");
            create_follow_key_row(previous_workspace_key_label, previous_workspace_key_entry, _("Previous workspace:"), close_workspace_key_label, workspace_key_grid, "shortcut", "previous_workspace");
            create_follow_key_row(next_workspace_key_label, next_workspace_key_entry, _("Next workspace:"), previous_workspace_key_label, workspace_key_grid, "shortcut", "next_workspace");
            create_follow_key_row(split_vertically_key_label, split_vertically_key_entry, _("Vertical split:"), next_workspace_key_label, workspace_key_grid, "shortcut", "vertical_split");
            create_follow_key_row(split_horizontally_key_label, split_horizontally_key_entry, _("Horizontal split:"), split_vertically_key_label, workspace_key_grid, "shortcut", "horizontal_split");
            create_follow_key_row(select_up_window_key_label, select_up_window_key_entry, _("Select upper window:"), split_horizontally_key_label, workspace_key_grid, "shortcut", "select_upper_window");
            create_follow_key_row(select_down_window_key_label, select_down_window_key_entry, _("Select lower window:"), select_up_window_key_label, workspace_key_grid, "shortcut", "select_lower_window");
            create_follow_key_row(select_left_window_key_label, select_left_window_key_entry, _("Select left window:"), select_down_window_key_label, workspace_key_grid, "shortcut", "select_left_window");
            create_follow_key_row(select_right_window_key_label, select_right_window_key_entry, _("Select right window:"), select_left_window_key_label, workspace_key_grid, "shortcut", "select_right_window");
            create_follow_key_row(close_window_key_label, close_window_key_entry, _("Close window:"), select_right_window_key_label, workspace_key_grid, "shortcut", "close_window");
            create_follow_key_row(close_other_windows_key_label, close_other_windows_key_entry, _("Close other windows:"), close_window_key_label, workspace_key_grid, "shortcut", "close_other_windows");

            var advanced_key_segment = get_second_segment(_("Advanced"));
            content_box.pack_start(advanced_key_segment, false, false, 0);

            var advanced_key_grid = new Gtk.Grid();
            content_box.pack_start(advanced_key_grid, false, false, 0);

            create_key_row(fullscreen_key_label, fullscreen_key_entry, _("Fullscreen:"), advanced_key_grid, "shortcut", "switch_fullscreen");
            create_follow_key_row(rename_title_key_label, rename_title_key_entry, _("Rename title:"), fullscreen_key_label, advanced_key_grid, "shortcut", "rename_title");
            create_follow_key_row(display_hotkey_terminal_key_label, display_hotkey_terminal_key_entry, _("Display shortcuts:"), rename_title_key_label, advanced_key_grid, "shortcut", "display_shortcuts");
            create_follow_key_row(show_command_key_label, show_command_key_entry, _("Custom commands:"), display_hotkey_terminal_key_label, advanced_key_grid, "shortcut", "custom_commands");
            create_follow_key_row(show_remote_manage_key_label, show_remote_manage_key_entry, _("Remote management:"), show_command_key_label, advanced_key_grid, "shortcut", "remote_management");

            var advanced_segment = get_first_segment(_("Advanced"));
            content_box.pack_start(advanced_segment, false, false, 0);

            var cursor_segment = get_second_segment(_("Cursor"));
            content_box.pack_start(cursor_segment, false, false, 0);

            var cursor_grid = new Gtk.Grid();
            content_box.pack_start(cursor_grid, false, false, 0);


            try {
                cursor_style_button.set_cursor_state(parent_window.config.config_file.get_string("advanced", "cursor_shape"));
            } catch (GLib.KeyFileError e) {
                print("Preference set cursor shape: %s\n", e.message);
            }
            cursor_style_button.change_cursor_state.connect((w, active_state) => {
                    parent_window.config.load_config();
                    parent_window.config.config_file.set_string("advanced", "cursor_shape", active_state);
                    parent_window.config.save();

                    parent_window.config.update();
                });
            adjust_option_widgets(cursor_style_label, cursor_style_button);
            grid_attach(cursor_grid, cursor_style_label, 0, 0, preference_name_width, grid_height);
            grid_attach_next_to(cursor_grid, cursor_style_button, cursor_style_label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
            cursor_style_label.get_style_context().add_class("preference_title");

            var cursor_blink_box = create_follow_check_row(cursor_blink_checkbutton, _("Cursor blink"), cursor_style_label, cursor_grid, "advanced", "cursor_blink_mode");
            var cursor_auto_hide_box = create_follow_check_row(cursor_auto_hide_checkbutton, _("Cursor autohide"), cursor_blink_box, cursor_grid, "advanced", "cursor_auto_hide");
            create_follow_check_row(copy_on_select_checkbutton, _("Copy on select"), cursor_auto_hide_box, cursor_grid, "advanced", "copy_on_select");

            var scroll_segment = get_second_segment(_("Scroll"));
            content_box.pack_start(scroll_segment, false, false, 0);

            var scroll_grid = new Gtk.Grid();
            content_box.pack_start(scroll_grid, false, false, 0);

            var scroll_on_key_box = create_check_row(scroll_on_key_checkbutton, _("Scroll on keystroke"), scroll_grid, "advanced", "scroll_on_key");
            create_follow_check_row(scroll_on_out_checkbutton, _("Scroll on output"), scroll_on_key_box, scroll_grid, "advanced", "scroll_on_output");

            var window_segment = get_second_segment(_("Window"));
            content_box.pack_start(window_segment, false, false, 0);

            var window_grid = new Gtk.Grid();
            content_box.pack_start(window_grid, false, false, 0);

            window_state_list = new ArrayList<string>();
            window_state_list.add("window");
            window_state_list.add("maximize");
            window_state_list.add("fullscreen");
            window_state_name_list = new ArrayList<string>();
            window_state_name_list.add(_("Normal window"));
            window_state_name_list.add(_("Maximize"));
            window_state_name_list.add(_("Fullscreen"));
            create_combox_row_with_name(window_label, window_combox, _("Use on starting:"), window_grid, window_state_list, window_state_name_list, "advanced", "use_on_starting");

            var hide_quakewindow_box = create_follow_check_row(hide_quakewindow_after_lost_focus_checkbutton,
                                                               _("Hide Quake window after losing focus"),
                                                               window_label,
                                                               window_grid,
                                                               "advanced",
                                                               "hide_quakewindow_after_lost_focus");

            create_follow_check_row(blur_background_checkbutton,
                                    _("Blur background"),
                                    hide_quakewindow_box,
                                    window_grid,
                                    "advanced",
                                    "blur_background");

            var reset_button = new Widgets.ImageButton("reset_button", false, _("Restore Defaults"));
            reset_button.set_halign(Gtk.Align.CENTER);
            reset_button.margin_top = reset_button_margin;
            reset_button.margin_bottom = reset_button_margin;
            reset_button.clicked.connect((w, e) => {
                    parent_window.config.init_config();
                    parent_window.config.update();

                    init_config();
                });
            content_box.pack_start(reset_button, false, false, 0);

            timer = new AnimateTimer(AnimateTimer.ease_in_out, timer_interval);
            timer.animate.connect(on_animate);
            slidebar.click_item.connect((w, item) => {
                    if (item == "basic") {
                        scroll_to_widget(scrolledwindow, box, basic_segment);
                    } else if (item == "theme") {
                        scroll_to_widget(scrolledwindow, box, theme_segment);
                    } else if (item == "hotkey") {
                        scroll_to_widget(scrolledwindow, box, hotkey_segment);
                    } else if (item == "terminal_key") {
                        scroll_to_widget(scrolledwindow, box, terminal_key_segment);
                    } else if (item == "workspace_key") {
                        scroll_to_widget(scrolledwindow, box, workspace_key_segment);
                    } else if (item == "advanced_key") {
                        scroll_to_widget(scrolledwindow, box, advanced_key_segment);
                    } else if (item == "advanced") {
                        scroll_to_widget(scrolledwindow, box, advanced_segment);
                    } else if (item == "cursor") {
                        scroll_to_widget(scrolledwindow, box, cursor_segment);
                    } else if (item == "scroll") {
                        scroll_to_widget(scrolledwindow, box, scroll_segment);
                    } else if (item == "window") {
                        scroll_to_widget(scrolledwindow, box, window_segment);
                    }
                });

            scrolledwindow.get_vadjustment().value_changed.connect((w) => {
                    if (!in_animation) {
                        if (item_in_visible_area(basic_segment)) {
                            slidebar.focus_item(slidebar.basic_segment);
                        } else if (item_in_visible_area(theme_segment)) {
                            slidebar.focus_item(slidebar.theme_segment);
                        } else if (item_in_visible_area(hotkey_segment)) {
                            slidebar.focus_item(slidebar.hotkey_segment);
                        } else if (item_in_visible_area(terminal_key_segment)) {
                            slidebar.focus_item(slidebar.terminal_key_segment);
                        } else if (item_in_visible_area(workspace_key_segment)) {
                            slidebar.focus_item(slidebar.workspace_key_segment);
                        } else if (item_in_visible_area(advanced_key_segment)) {
                            slidebar.focus_item(slidebar.advanced_key_segment);
                        } else if (item_in_visible_area(advanced_segment)) {
                            slidebar.focus_item(slidebar.advanced_segment);
                        } else if (item_in_visible_area(cursor_segment)) {
                            slidebar.focus_item(slidebar.cursor_segment);
                        } else if (item_in_visible_area(scroll_segment)) {
                            slidebar.focus_item(slidebar.scroll_segment);
                        } else if (item_in_visible_area(window_segment)) {
                            slidebar.focus_item(slidebar.window_segment);
                        }
                    }
                });
        }

        public void init_config() {
            try {
                opacity_progressbar.set_percent(parent_window.config.config_file.get_double("general", "opacity"));
                font_combox.set_active(font_names.index_of(parent_window.config.config_file.get_value("general", "font")));
                window_combox.set_active(window_state_list.index_of(parent_window.config.config_file.get_value("advanced", "use_on_starting")));

                copy_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "copy"));
                paste_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "paste"));
                open_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "open"));
                search_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "search"));
                zoom_in_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "zoom_in"));
                zoom_out_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "zoom_out"));
                zoom_reset_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "default_size"));
                jump_to_next_command_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "jump_to_next_command"));
                jump_to_previous_command_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "jump_to_previous_command"));
                select_all_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "select_all"));
                new_workspace_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "new_workspace"));
                close_workspace_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "close_workspace"));
                previous_workspace_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "previous_workspace"));
                next_workspace_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "next_workspace"));
                split_vertically_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "vertical_split"));
                split_horizontally_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "horizontal_split"));
                select_up_window_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "select_upper_window"));
                select_down_window_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "select_lower_window"));
                select_left_window_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "select_left_window"));
                select_right_window_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "select_right_window"));
                close_window_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "close_window"));
                close_other_windows_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "close_other_windows"));
                fullscreen_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "switch_fullscreen"));
                rename_title_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "rename_title"));
                display_hotkey_terminal_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "display_shortcuts"));
                show_command_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "custom_commands"));
                show_remote_manage_key_entry.set_text(parent_window.config.config_file.get_string("shortcut", "remote_management"));

                cursor_style_button.set_cursor_state(parent_window.config.config_file.get_string("advanced", "cursor_shape"));;

                cursor_blink_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "cursor_blink_mode"));
                cursor_auto_hide_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "cursor_auto_hide"));
                copy_on_select_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "copy_on_select"));
                scroll_on_key_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "scroll_on_key"));
                scroll_on_out_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "scroll_on_output"));
                blur_background_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "blur_background"));
                hide_quakewindow_after_lost_focus_checkbutton.set_active(parent_window.config.config_file.get_boolean("advanced", "hide_quakewindow_after_lost_focus"));

                font_size_spinbutton.set_value(parent_window.config.config_file.get_integer("general", "font_size"));
            } catch (GLib.KeyFileError e) {
                print("Preference init_config: %s\n", e.message);
            }

        }

        public bool item_in_visible_area(Gtk.Widget item) {
            int widget_x, widget_y;
            content_box.translate_coordinates(item, 0, 0, out widget_x, out widget_y);

            return Math.fabs(widget_y) > scrolledwindow.get_vadjustment().get_value() - segment_margin_top * 2;
        }

        public void scroll_to_widget(ScrolledWindow scrolledwindow, Gtk.Box box, Gtk.Widget widget) {
            int widget_x, widget_y;
            content_box.translate_coordinates(widget, 0, 0, out widget_x, out widget_y);

            var adjust = scrolledwindow.get_vadjustment();
            timer_start_value= adjust.get_value();
            timer_end_value = Math.fabs(widget_y);

            in_animation = true;
            timer.reset();
        }

        public void on_animate(double progress) {
            var adjust = scrolledwindow.get_vadjustment();
            adjust.set_value(timer_start_value + (timer_end_value - timer_start_value) * progress);

            if (progress >= 1.0) {
                timer.stop();
                in_animation = false;
            }
        }

        public Gtk.Widget get_first_segment(string name) {
            var segment = create_label();
            segment.get_style_context().add_class("preference_first_segment");
            segment.set_text(name);
            segment.set_xalign(0);

            var box = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 0);
            box.pack_start(segment, false, false, 0);

            var line = new Gtk.EventBox();
            line.margin_start = preference_split_line_margin_left;
            line.draw.connect((w, cr) => {
                    Gtk.Allocation rect;
                    this.get_allocation(out rect);

                    cr.set_source_rgba(0, 0, 0, 0.1);
                    Draw.draw_rectangle(cr, 0, 12, rect.width, 1);

                    return true;
                });
            box.pack_start(line, true, true, 0);

            box.margin_top = segment_margin_top;
            box.margin_bottom = segment_margin_bottom;
            box.margin_start = first_segment_margin_left;

            return (Gtk.Widget) box;
        }

        public Gtk.Widget get_second_segment(string name) {
            var segment = create_label();
            segment.get_style_context().add_class("preference_second_segment");
            segment.set_text(name);
            segment.set_xalign(0);
            segment.margin_top = segment_margin_top;
            segment.margin_bottom = segment_margin_bottom;
            segment.margin_start = second_segment_margin_left;

            return (Gtk.Widget) segment;
        }

        public void create_key_row(Gtk.Label label, ShortcutEntry entry, string name, Gtk.Grid grid, string? group_name=null, string? key=null) {
            label.set_text(name);
            label.get_style_context().add_class("preference_title");

            monitor_check_key(entry, group_name, key);

            adjust_option_widgets(label, entry);
            grid_attach(grid, label, 0, 0, preference_name_width, grid_height);
            grid_attach_next_to(grid, entry, label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
        }

        public void create_follow_key_row(Gtk.Label label, ShortcutEntry entry, string name, Gtk.Label previous_label, Gtk.Grid grid, string? group_name=null, string? key=null) {
            label.set_text(name);
            label.get_style_context().add_class("preference_title");

            monitor_check_key(entry, group_name, key);

            adjust_option_widgets(label, entry);
            grid_attach_next_to(grid, label, previous_label, Gtk.PositionType.BOTTOM, preference_name_width, grid_height);
            grid_attach_next_to(grid, entry, label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
        }

        public void monitor_check_key(ShortcutEntry entry, string group_name, string key) {
            entry.change_key.connect((e, new_key) => {
                    parent_window.config.load_config();
                    parent_window.config.config_file.set_string(group_name, key, new_key);
                    parent_window.config.save();

                    parent_window.config.update();
                });

            if (group_name != null && key != null) {
                try {
                    entry.set_text(parent_window.config.config_file.get_string(group_name, key));
                } catch (GLib.KeyFileError e) {
                    print("Preference monitor_check_key: %s\n", e.message);
                }
            }
        }

        public void create_combox_row(Gtk.Label label, Widgets.DropdownTextButton combox, string name, Gtk.Grid grid, ArrayList<string>? values=null, string? group_name=null, string? key=null) {
            label.set_text(name);
            label.get_style_context().add_class("preference_title");

            if (values != null) {
                foreach (string value in values) {
                    combox.append(value, value);
                }

                try {
                    combox.set_active(values.index_of(parent_window.config.config_file.get_value(group_name, key)));
                } catch (GLib.KeyFileError e) {
                    print("create_combox_row error: %s\n".printf(e.message));
                }

                combox.changed.connect((w) => {
                        parent_window.config.load_config();
                        parent_window.config.config_file.set_string(group_name, key, values[combox.get_active()]);
                        parent_window.config.save();

                        parent_window.config.update();
                    });
            }
            adjust_option_widgets(label, combox);
            grid_attach(grid, label, 0, 0, preference_name_width, grid_height);
            grid_attach_next_to(grid, combox, label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
        }

        public void create_combox_row_with_name(Gtk.Label label, Widgets.DropdownTextButton combox, string name, Gtk.Grid grid, ArrayList<string>? values=null, ArrayList<string>? names=null, string? group_name=null, string? key=null) {
            label.set_text(name);
            label.get_style_context().add_class("preference_title");

            if (values != null) {
                int index = 0;
                foreach (string value in values) {
                    combox.append(value, names[index]);
                    index++;
                }

                try {
                    combox.set_active(values.index_of(parent_window.config.config_file.get_value(group_name, key)));
                } catch (GLib.KeyFileError e) {
                    print("create_combox_row error: %s\n".printf(e.message));
                }

                combox.changed.connect((w) => {
                        parent_window.config.load_config();
                        parent_window.config.config_file.set_string(group_name, key, values[combox.get_active()]);
                        parent_window.config.save();

                        parent_window.config.update();
                    });
            }
            adjust_option_widgets(label, combox);
            grid_attach(grid, label, 0, 0, preference_name_width, grid_height);
            grid_attach_next_to(grid, combox, label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);
        }

        public void adjust_option_widgets(Gtk.Label name_widget, Gtk.Widget value_widget) {
            name_widget.set_xalign(0);
            name_widget.set_size_request(preference_name_width, grid_height);
            name_widget.margin_start = option_widget_margin_left;

            value_widget.set_size_request(preference_widget_width, grid_height);
            value_widget.margin_end = option_widget_margin_right;
            // NOTE:
            // set_hexpand is very important to make widget in grid to expand space horizaontally.
            value_widget.set_hexpand(true);
        }

        public Gtk.Box create_check_row(Widgets.CheckButton checkbutton, string name, Gtk.Grid grid, string? group_name=null, string? key=null) {
            var box = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 0);
            var label = create_label(name);
            label.get_style_context().add_class("preference_title");
            adjust_option_checkbutton(label, checkbutton);

            read_check_value(checkbutton, group_name, key);

            box.pack_start(checkbutton, false, false, 0);
            box.pack_start(label, false, false, 0);
            grid_attach(grid, box, 0, 0, preference_name_width, grid_height);

            return box;
        }

        public Gtk.Box create_follow_check_row(Widgets.CheckButton checkbutton, string name, Gtk.Widget previous_widget, Gtk.Grid grid, string? group_name=null, string? key=null) {
            var box = new Gtk.Box(Gtk.Orientation.HORIZONTAL, 0);
            var label = create_label(name);
            label.get_style_context().add_class("preference_title");

            adjust_option_checkbutton(label, checkbutton);

            read_check_value(checkbutton, group_name, key);

            box.pack_start(checkbutton, false, false, 0);
            box.pack_start(label, false, false, 0);
            grid_attach_next_to(grid, box, previous_widget, Gtk.PositionType.BOTTOM, preference_name_width, grid_height);

            return box;
        }

        public void read_check_value(Widgets.CheckButton checkbutton, string group_name, string key) {
            if (group_name != null && key != null) {
                try {
                    checkbutton.set_active(parent_window.config.config_file.get_boolean(group_name, key));
                } catch (GLib.KeyFileError e) {
                    print("create_follow_check_row error: %s\n".printf(e.message));
                }

                monitor_check_value(checkbutton, group_name, key);
            }
        }

        public Gtk.Label create_follow_spinbutton_row(Widgets.SpinButton spinbutton, string name, Gtk.Widget previous_widget, Gtk.Grid grid, string? group_name=null, string? key=null) {
            var label = create_label(name);
            label.get_style_context().add_class("preference_title");
            adjust_option_widgets(label, spinbutton);

            read_spin_value(spinbutton, group_name, key);

            grid_attach_next_to(grid, label, previous_widget, Gtk.PositionType.BOTTOM, preference_name_width, grid_height);
            grid_attach_next_to(grid, spinbutton, label, Gtk.PositionType.RIGHT, preference_widget_width, grid_height);

            return label;
        }

        public void read_spin_value(Widgets.SpinButton spinbutton, string group_name, string key) {
            if (group_name != null && key != null) {
                try {
                    spinbutton.set_value(parent_window.config.config_file.get_integer(group_name, key));
                } catch (GLib.KeyFileError e) {
                    print("read_spin_value error: %s\n".printf(e.message));
                }

                monitor_spin_value(spinbutton, group_name, key);
            }
        }

        public void monitor_check_value(Widgets.CheckButton checkbutton, string group_name, string key) {
            checkbutton.toggled.connect((w) => {
                    var is_active = checkbutton.get_active();

                    parent_window.config.load_config();
                    parent_window.config.config_file.set_boolean(group_name, key, is_active);
                    parent_window.config.save();

                    parent_window.config.update();
                });
        }

        public void monitor_spin_value(Widgets.SpinButton spinbutton, string group_name, string key) {
            spinbutton.value_changed.connect((w) => {
                    var spin_value = spinbutton.get_value();

                    parent_window.config.load_config();
                    parent_window.config.config_file.set_integer(group_name, key, (int) spin_value);
                    parent_window.config.save();

                    parent_window.config.update();
                });
        }

        public void adjust_option_checkbutton(Gtk.Label label, Widgets.CheckButton checkbutton) {
            checkbutton.margin_start = option_widget_margin_left;
            checkbutton.margin_top = checkbutton_margin_top;
            checkbutton.margin_end = checkbutton_margin_right;
        }

        public Widgets.Entry create_entry() {
            var entry = new Widgets.Entry();
            entry.get_style_context().add_class("preference_entry");

            return entry;
        }

        public Widgets.DropdownTextButton create_combox_text() {
            var combox = new Widgets.DropdownTextButton();
            combox.get_style_context().add_class("preference_comboboxtext");

            return combox;
        }

        public Widgets.SpinButton create_spinbutton(int min, int max, int step) {
            var spinbutton = new Widgets.SpinButton();
            spinbutton.set_range(min, max);
            spinbutton.set_increments(step, step * 10);
            spinbutton.get_style_context().add_class("preference_spinbutton");

            return spinbutton;
        }

        public Gtk.Label create_label(string? text=null) {
            var label = new Gtk.Label(text);
            label.get_style_context().add_class("preference_label");

            return label;
        }
    }
}