import Clutter from 'gi://Clutter';
import Gio from 'gi://Gio';
import GLib from 'gi://GLib';
import GObject from 'gi://GObject';
import St from 'gi://St';
import Shell from 'gi://Shell';


import * as EdgeDragAction from 'resource:///org/gnome/shell/ui/edgeDragAction.js';
import * as Main from 'resource:///org/gnome/shell/ui/main.js';
import * as PanelMenu from 'resource:///org/gnome/shell/ui/panelMenu.js';
import * as PopupMenu from 'resource:///org/gnome/shell/ui/popupMenu.js';
import * as QuickSettings from 'resource:///org/gnome/shell/ui/quickSettings.js';
import * as KeyboardManager from 'resource:///org/gnome/shell/misc/keyboardManager.js';
import * as KeyboardUI from 'resource:///org/gnome/shell/ui/keyboard.js';
import { Dialog } from 'resource:///org/gnome/shell/ui/dialog.js';

import { Extension, gettext as _ } from 'resource:///org/gnome/shell/extensions/extension.js';

const State = {
	OPENED: 0,
	CLOSED: 1,
	OPENING: 2,
	CLOSING: 3,
};

class KeyboardMenuToggle extends QuickSettings.QuickMenuToggle {
	static {
		GObject.registerClass(this);
	}

	constructor(extensionObject) {
		super({
			title: _('Screen Keyboard'),
			iconName: 'input-keyboard-symbolic',
			toggleMode: true,
		});

		this.extensionObject = extensionObject;
		this.settings = extensionObject.getSettings();

		this.menu.setHeader('input-keyboard-symbolic', _('Screen Keyboard'), _('Opening Mode'));
		this._itemsSection = new PopupMenu.PopupMenuSection();
		this._itemsSection.addMenuItem(new PopupMenu.PopupImageMenuItem(_('Never'), this.settings.get_int("enable-tap-gesture") == 0 ? 'emblem-ok-symbolic' : null));
		this._itemsSection.addMenuItem(new PopupMenu.PopupImageMenuItem(_("Only on Touch"), this.settings.get_int("enable-tap-gesture") == 1 ? 'emblem-ok-symbolic' : null));
		this._itemsSection.addMenuItem(new PopupMenu.PopupImageMenuItem(_("Always"), this.settings.get_int("enable-tap-gesture") == 2 ? 'emblem-ok-symbolic' : null));
		for (var i in this._itemsSection._getMenuItems()) {
			const item = this._itemsSection._getMenuItems()[i]
			const num = i
			item.connect('activate', () => this.settings.set_int("enable-tap-gesture", num))
		}

		this.menu.addMenuItem(this._itemsSection);
		this.settings.bind('indicator-enabled',
			this, 'checked',
			Gio.SettingsBindFlags.DEFAULT);
		this.menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
		const settingsItem = this.menu.addAction(_('More Settings'),
			() => this.extensionObject.openPreferences());
		settingsItem.visible = Main.sessionMode.allowSettings;
		this.menu._settingsActions[this.extensionObject.uuid] = settingsItem;
	}

	_refresh() {
		for (var i in this._itemsSection._getMenuItems()) {
			this._itemsSection._getMenuItems()[i].setIcon(this.settings.get_int("enable-tap-gesture") == i ? 'emblem-ok-symbolic' : null)
		}
	}
};


let keycodes;
let layouts;

export default class GjsOskExtension extends Extension {
	_openKeyboard(instant) {
		if (this.Keyboard.state == State.CLOSED) {
			this.Keyboard.open(null, !instant ? null : true);
		}
	}

	_closeKeyboard(instant) {
		if (this.Keyboard.state == State.OPENED) {
			this.Keyboard.close(!instant ? null : true);
		}
	}

	_toggleKeyboard(instant = false) {
		if (!this.Keyboard.opened) {
			this._openKeyboard(instant);
			this.Keyboard.openedFromButton = true;
			this.Keyboard.closedFromButton = false
		} else {
			this._closeKeyboard(instant);
			this.Keyboard.openedFromButton = false;
			this.Keyboard.closedFromButton = true;
		}
	}

	open_interval() {
		global.stage.disconnect(this.tapConnect)
		if (this.openInterval !== null) {
			clearInterval(this.openInterval);
			this.openInterval = null;
		}
		this.openInterval = setInterval(() => {
			if (global.stage.key_focus == this.Keyboard && this.Keyboard.prevKeyFocus != null) {
				global.stage.key_focus = this.Keyboard.prevKeyFocus
			}
			this.Keyboard.get_parent().set_child_at_index(this.Keyboard, this.Keyboard.get_parent().get_n_children() - 1);
			this.Keyboard.set_child_at_index(this.Keyboard.box, this.Keyboard.get_n_children() - 1);
			if (!this.Keyboard.openedFromButton && this.lastInputMethod) {
				if (Main.inputMethod.currentFocus != null && Main.inputMethod.currentFocus.is_focused() && !this.Keyboard.closedFromButton) {
					this._openKeyboard();
				} else if (!this.Keyboard.closedFromButton && !this.Keyboard._dragging) {
					this._closeKeyboard();
					this.Keyboard.closedFromButton = false
				} else if (Main.inputMethod.currentFocus == null) {
					this.Keyboard.closedFromButton = false
				}
			}
		}, 300);
		this.tapConnect = global.stage.connect("event", (_actor, event) => {
			if (event.type() !== 4 && event.type() !== 5) {
				this.lastInputMethod = [false, event.type() >= 9 && event.type() <= 12, true][this.settings.get_int("enable-tap-gesture")]
			}
		})
	}

	enable() {
		this.settings = this.getSettings();
		this.darkSchemeSettings = this.getSettings("org.gnome.desktop.interface");
		this.inputLanguageSettings = this.getSettings('org.gnome.desktop.input-sources')
		this.gnomeKeyboardSettings = this.getSettings('org.gnome.desktop.a11y.applications');
		this.isGnomeKeyboardEnabled = this.gnomeKeyboardSettings.get_boolean('screen-keyboard-enabled');
		this.gnomeKeyboardSettings.set_boolean('screen-keyboard-enabled', false)
		this.isGnomeKeyboardEnabledHandler = this.gnomeKeyboardSettings.connect('changed', () => {
			this.gnomeKeyboardSettings.set_boolean('screen-keyboard-enabled', false)
		});
		this.settings.scheme = ""
		if (this.darkSchemeSettings.get_string("color-scheme") == "prefer-dark")
			this.settings.scheme = "-dark"
		this.openBit = this.settings.get_child("indicator");

		this.openPrefs = () => { this.openPreferences() }

		let [okL, contentsL] = GLib.file_get_contents(this.path + '/physicalLayouts.json');
		if (okL) {
			layouts = JSON.parse(contentsL);
		}

		let refresh = () => {
			if (!Gio.File.new_for_path(this.path + "/keycodes").query_exists(null)) {
				Gio.File.new_for_path(this.path + "/keycodes").make_directory(null);
				let [status, out, err, code] = GLib.spawn_command_line_sync("tar -Jxf " + this.path + "/keycodes.tar.xz -C " + this.path + "/keycodes")
				if (err != "" || code != 0) {
					throw new Error(err);
				}
			}
			if (this.Keyboard)
				this.Keyboard.destroy();
			let [ok, contents] = GLib.file_get_contents(this.path + '/keycodes/' + KeyboardManager.getKeyboardManager().currentLayout.id + '.json');
			if (ok) {
				keycodes = JSON.parse(contents);
			}
			this.Keyboard = new Keyboard(this.settings, this);
			this.Keyboard.refresh = refresh
		}
		refresh()

		this._originalLastDeviceIsTouchscreen = KeyboardUI.KeyboardManager.prototype._lastDeviceIsTouchscreen;
		KeyboardUI.KeyboardManager.prototype._lastDeviceIsTouchscreen = () => { return false };

		this._indicator = null;
		this.openInterval = null;
		if (this.settings.get_boolean("indicator-enabled")) {
			this._indicator = new PanelMenu.Button(0.0, "GJS OSK Indicator", false);
			let icon = new St.Icon({
				gicon: new Gio.ThemedIcon({
					name: 'input-keyboard-symbolic'
				}),
				style_class: 'system-status-icon'
			});
			this._indicator.add_child(icon);

			this._indicator.connect("button-press-event", () => this._toggleKeyboard());
			this._indicator.connect("touch-event", (_actor, event) => {
				if (event.type() == Clutter.EventType.TOUCH_END) this._toggleKeyboard()
			});
			Main.panel.addToStatusArea("GJS OSK Indicator", this._indicator);
		}

		this._toggle = new KeyboardMenuToggle(this);
		this._quick_settings_indicator = new QuickSettings.SystemIndicator();
		this._quick_settings_indicator.quickSettingsItems.push(this._toggle);
		Main.panel.statusArea.quickSettings.addExternalIndicator(this._quick_settings_indicator);
		this.open_interval();
		this.openFromCommandHandler = this.openBit.connect("changed", () => {
			this.openBit.set_boolean("opened", false)
			this._toggleKeyboard();
		})
		let settingsChanged = () => {
			let opened = this.Keyboard.opened
			if (this.darkSchemeSettings.get_string("color-scheme") == "prefer-dark")
				this.settings.scheme = "-dark"
			else
				this.settings.scheme = ""
			this.Keyboard.openedFromButton = false;
			refresh()
			this._toggle._refresh();
			if (this.settings.get_boolean("indicator-enabled")) {
				if (this._indicator != null) {
					this._indicator.destroy();
					this._indicator = null;
				}
				this._indicator = new PanelMenu.Button(0.0, "GJS OSK Indicator", false);
				let icon = new St.Icon({
					gicon: new Gio.ThemedIcon({
						name: 'input-keyboard-symbolic'
					}),
					style_class: 'system-status-icon'
				});
				this._indicator.add_child(icon);

				this._indicator.connect("button-press-event", () => this._toggleKeyboard());
				this._indicator.connect("touch-event", (_actor, event) => {
					if (event.type() == Clutter.EventType.TOUCH_END) this._toggleKeyboard()
				});
				Main.panel.addToStatusArea("GJS OSK Indicator", this._indicator);
			} else {
				if (this._indicator != null) {
					this._indicator.destroy();
					this._indicator = null;
				}
			}
			global.stage.disconnect(this.tapConnect)
			if (this.openInterval !== null) {
				clearInterval(this.openInterval);
				this.openInterval = null;
			}
			this.open_interval();
			if (opened) {
				this._toggleKeyboard(true);
			}
		}
		this.settingsHandlers = [
			this.settings.connect("changed", settingsChanged),
			this.darkSchemeSettings.connect("changed", (_, key) => { if (key == "color-scheme") settingsChanged() }),
			this.inputLanguageSettings.connect("changed", settingsChanged)
		];
	}

	disable() {
		this.gnomeKeyboardSettings.disconnect(this.isGnomeKeyboardEnabledHandler)
		this.gnomeKeyboardSettings.set_boolean('screen-keyboard-enabled', this.isGnomeKeyboardEnabled);

		this._quick_settings_indicator.quickSettingsItems.forEach(item => item.destroy());
		this._quick_settings_indicator.destroy();
		this._quick_settings_indicator = null;

		if (this._indicator !== null) {
			this._indicator.destroy();
			this._indicator = null;
		}
		this.Keyboard.destroy();
		this.settings.disconnect(this.settingsHandlers[0]);
		this.darkSchemeSettings.disconnect(this.settingsHandlers[1])
		this.inputLanguageSettings.disconnect(this.settingsHandlers[2])
		this.settings = null;
		this.darkSchemeSettings = null;
		this.inputLanguageSettings = null;
		this.gnomeKeyboardSettings = null;
		this.openBit.disconnect(this.openFromCommandHandler);
		this.openBit = null;
		global.stage.disconnect(this.tapConnect)
		if (this.openInterval !== null) {
			clearInterval(this.openInterval);
			this.openInterval = null;
		}
		this._toggle.destroy()
		this._toggle = null
		this.settings = null
		this.Keyboard = null
		keycodes = null
		if (this._originalLastDeviceIsTouchscreen !== null) {
			KeyboardUI.KeyboardManager.prototype._lastDeviceIsTouchscreen = this._originalLastDeviceIsTouchscreen;
			this._originalLastDeviceIsTouchscreen = null;
		}
	}
}


class Keyboard extends Dialog {
	static [GObject.signals] = {
		'drag-begin': {},
		'drag-end': {}
	};

	static {
		GObject.registerClass(this);
	}

	_init(settings, extensionObject) {
		this.settingsOpenFunction = extensionObject.openPrefs
		this.inputDevice = Clutter.get_default_backend().get_default_seat().create_virtual_device(Clutter.InputDeviceType.KEYBOARD_DEVICE);
		this.settings = settings;
		let monitor = Main.layoutManager.primaryMonitor;
		super._init(Main.layoutManager.modalDialogGroup, 'db-keyboard-content');
		this.box = new St.Widget({
			layout_manager: new Clutter.GridLayout({
				orientation: Clutter.Orientation.HORIZONTAL,
				row_spacing: settings.get_int("border-spacing-px") * 2,
				column_spacing: settings.get_int("border-spacing-px") * 2,
			})
		});
		this.widthPercent = (monitor.width > monitor.height) ? settings.get_int("landscape-width-percent") / 100 : settings.get_int("portrait-width-percent") / 100;
		this.heightPercent = (monitor.width > monitor.height) ? settings.get_int("landscape-height-percent") / 100 : settings.get_int("portrait-height-percent") / 100;
		this.buildUI();
		this.draggable = false;
		this.add_child(this.box);
		this.close();
		this.box.set_name("osk-gjs")
		this.mod = [];
		this.modBtns = [];
		this.capsL = false;
		this.shift = false;
		this.alt = false;
		this.opened = false;
		this.state = State.CLOSED;
		this.delta = [];
		this.checkMonitor();
		this._dragging = false;
		let side = null;
		switch (this.settings.get_int("default-snap")) {
			case 0:
			case 1:
			case 2:
				side = St.Side.TOP;
				break;
			case 3:
				side = St.Side.LEFT;
				break;
			case 5:
				side = St.Side.RIGHT;
				break;
			case 6:
			case 7:
			case 8:
				side = St.Side.BOTTOM;
				break;
		}
		this.oldBottomDragAction = global.stage.get_action('osk');
		if (this.oldBottomDragAction !== null && this.oldBottomDragAction instanceof Clutter.Action)
			global.stage.remove_action(this.oldBottomDragAction);
		if (side != null) {
			const mode = Shell.ActionMode.ALL & ~Shell.ActionMode.LOCK_SCREEN;
			const bottomDragAction = new EdgeDragAction.EdgeDragAction(side, mode);
			bottomDragAction.connect('activated', () => {
				this.open(true);
				this.openedFromButton = true;
				this.closedFromButton = false;
				this.gestureInProgress = false;
			});
			bottomDragAction.connect('progress', (_action, progress) => {
				if (!this.gestureInProgress)
					this.open(false)
				this.setOpenState(Math.min(Math.max(0, (progress / (side % 2 == 0 ? this.box.height : this.box.width)) * 100), 100))
				this.gestureInProgress = true;
			});
			bottomDragAction.connect('gesture-cancel', () => {
				if (this.gestureInProgress) {
					this.close()
					this.openedFromButton = false;
					this.closedFromButton = true;
				}
				this.gestureInProgress = false;
				return Clutter.EVENT_PROPAGATE;
			});
			global.stage.add_action_full('osk', Clutter.EventPhase.CAPTURE, bottomDragAction);
			this.bottomDragAction = bottomDragAction;
		} else {
			this.bottomDragAction = null;
		}
		this._oldMaybeHandleEvent = Main.keyboard.maybeHandleEvent
		Main.keyboard.maybeHandleEvent = (e) => {
			let lastInputMethod = [e.type() == 11, e.type() == 11, e.type() == 7 || e.type() == 11][this.settings.get_int("enable-tap-gesture")]
			let ac = global.stage.get_event_actor(e)
			if (this.contains(ac)) {
				ac.event(e, true);
				ac.event(e, false);
				return true;
			} else if (ac instanceof Clutter.Text && lastInputMethod && !this.opened) {
				this.open();
			}
			return false
		}
	}

	destroy() {
		Main.keyboard.maybeHandleEvent = this._oldMaybeHandleEvent
		global.stage.remove_action_by_name('osk')
		if (this.oldBottomDragAction !== null && this.oldBottomDragAction instanceof Clutter.Action)
			global.stage.add_action_full('osk', Clutter.EventPhase.CAPTURE, this.oldBottomDragAction)
		if (this.monitorChecker !== null) {
			clearInterval(this.monitorChecker);
			this.monitorChecker = null;
		}
		if (this.textboxChecker !== null) {
			clearInterval(this.textboxChecker);
			this.textboxChecker = null;
		}
		if (this.stateTimeout !== null) {
			clearTimeout(this.stateTimeout);
			this.stateTimeout = null;
		}
		if (this.keyTimeout !== null) {
			clearTimeout(this.keyTimeout);
			this.keyTimeout = null;
		}
		this.keymap.disconnect(this.capslockConnect);
		this.keymap.disconnect(this.numLockConnect);
		super.destroy();
	}

	startDragging(event, delta) {
		if (this.draggable) {
			if (this._dragging)
				return Clutter.EVENT_PROPAGATE;
			this._dragging = true;
			this.box.set_opacity(255);
			this.box.ease({
				opacity: 200,
				duration: 100,
				mode: Clutter.AnimationMode.EASE_OUT_QUAD,
				onComplete: () => { }
			});
			let device = event.get_device();
			let sequence = event.get_event_sequence();
			this._grab = global.stage.grab(this);
			this._grabbedDevice = device;
			this._grabbedSequence = sequence;
			this.emit('drag-begin');
			let [absX, absY] = event.get_coords();
			this.snapMovement(absX - delta[0], absY - delta[1]);
			return Clutter.EVENT_STOP;
		} else {
			return Clutter.EVENT_PROPAGATE;
		}
	}

	endDragging() {
		if (this.draggable) {
			if (this._dragging) {
				if (this._releaseId) {
					this.disconnect(this._releaseId);
					this._releaseId = 0;
				}
				if (this._grab) {
					this._grab.dismiss();
					this._grab = null;
				}

				this.box.set_opacity(200);
				this.box.ease({
					opacity: 255,
					duration: 100,
					mode: Clutter.AnimationMode.EASE_OUT_QUAD,
					onComplete: () => { }
				});
				this._grabbedSequence = null;
				this._grabbedDevice = null;
				this._dragging = false;
				this.delta = [];
				this.emit('drag-end');
				this._dragging = false;
			}
			this.draggable = false;
			return Clutter.EVENT_STOP;
		} else {
			return Clutter.EVENT_STOP;
		}
	}

	motionEvent(event) {
		if (this.draggable) {
			let [absX, absY] = event.get_coords();
			this.snapMovement(absX - this.delta[0], absY - this.delta[1]);
			return Clutter.EVENT_STOP
		} else {
			return Clutter.EVENT_STOP
		}
	}

	snapMovement(xPos, yPos) {
		let monitor = Main.layoutManager.primaryMonitor
		let snap_px = this.settings.get_int("snap-spacing-px")
		if (Math.abs(xPos - ((monitor.width * .5) - ((this.width * .5)))) <= 50) {
			xPos = ((monitor.width * .5) - ((this.width * .5)));
		} else if (Math.abs(xPos - snap_px) <= 50) {
			xPos = snap_px;
		} else if (Math.abs(xPos - (monitor.width - this.width - snap_px)) <= 50) {
			xPos = monitor.width - this.width - snap_px
		}
		if (Math.abs(yPos - (monitor.height - this.height - snap_px)) <= 50) {
			yPos = monitor.height - this.height - snap_px;
		} else if (Math.abs(yPos - snap_px) <= 50) {
			yPos = snap_px;
		} else if (Math.abs(yPos - ((monitor.height * .5) - (this.height * .5))) <= 50) {
			yPos = (monitor.height * .5) - (this.height * .5);
		}
		this.set_translation(xPos, yPos, 0);
	}

	checkMonitor() {
		let monitor = Main.layoutManager.primaryMonitor;
		let oldMonitorDimensions = [monitor.width, monitor.height];
		this.monitorChecker = setInterval(() => {
			monitor = Main.layoutManager.primaryMonitor;
			if (oldMonitorDimensions[0] != monitor.width || oldMonitorDimensions[1] != monitor.height) {
				this.refresh()
				oldMonitorDimensions = [monitor.width, monitor.height];
			}
		}, 200);
	}

	setOpenState(percent) {
		let monitor = Main.layoutManager.primaryMonitor;
		let posX = [this.settings.get_int("snap-spacing-px"), ((monitor.width * .5) - ((this.width * .5))), monitor.width - this.width - this.settings.get_int("snap-spacing-px")][(this.settings.get_int("default-snap") % 3)];
		let posY = [this.settings.get_int("snap-spacing-px"), ((monitor.height * .5) - ((this.height * .5))), monitor.height - this.height - this.settings.get_int("snap-spacing-px")][Math.floor((this.settings.get_int("default-snap") / 3))];
		let mX = [-this.box.width, 0, this.box.width][(this.settings.get_int("default-snap") % 3)];
		let mY = [-this.box.height, 0, this.box.height][Math.floor((this.settings.get_int("default-snap") / 3))]
		let [dx, dy] = [posX + mX * ((100 - percent) / 100), posY + mY * ((100 - percent) / 100)]
		let op = 255 * (percent / 100);
		this.set_translation(dx, dy, 0)
		this.box.set_opacity(op)
	}

	open(noPrep = null, instant = null) {
		if (noPrep == null || !noPrep) {
			this.prevKeyFocus = global.stage.key_focus
			this.inputDevice = Clutter.get_default_backend().get_default_seat().create_virtual_device(Clutter.InputDeviceType.KEYBOARD_DEVICE);
			this.state = State.OPENING
			this.show();
		}
		if (noPrep == null || noPrep) {
			let monitor = Main.layoutManager.primaryMonitor;
			let posX = [this.settings.get_int("snap-spacing-px"), ((monitor.width * .5) - ((this.width * .5))), monitor.width - this.width - this.settings.get_int("snap-spacing-px")][(this.settings.get_int("default-snap") % 3)];
			let posY = [this.settings.get_int("snap-spacing-px"), ((monitor.height * .5) - ((this.height * .5))), monitor.height - this.height - this.settings.get_int("snap-spacing-px")][Math.floor((this.settings.get_int("default-snap") / 3))];
			if (noPrep == null) {
				let mX = [-this.box.width, 0, this.box.width][(this.settings.get_int("default-snap") % 3)];
				let mY = [-this.box.height, 0, this.box.height][Math.floor((this.settings.get_int("default-snap") / 3))]
				this.set_translation(posX + mX, posY + mY, 0)
			}
			this.box.ease({
				opacity: 255,
				duration: instant == null || !instant ? 100 : 0,
				mode: Clutter.AnimationMode.EASE_OUT_QUAD,
				onComplete: () => {
					if (this.stateTimeout !== null) {
						clearTimeout(this.stateTimeout);
						this.stateTimeout = null;
					}
					this.stateTimeout = setTimeout(() => {
						this.state = State.OPENED
					}, 500);
				}
			});
			this.ease({
				translation_x: posX,
				translation_y: posY,
				duration: instant == null || !instant ? 100 : 0,
				mode: Clutter.AnimationMode.EASE_OUT_QUAD
			})
			this.opened = true;
		}
	}

	close(instant = null) {
		this.prevKeyFocus = null;
		let monitor = Main.layoutManager.primaryMonitor;
		let posX = [this.settings.get_int("snap-spacing-px"), ((monitor.width * .5) - ((this.width * .5))), monitor.width - this.width - this.settings.get_int("snap-spacing-px")][(this.settings.get_int("default-snap") % 3)];
		let posY = [this.settings.get_int("snap-spacing-px"), ((monitor.height * .5) - ((this.height * .5))), monitor.height - this.height - this.settings.get_int("snap-spacing-px")][Math.floor((this.settings.get_int("default-snap") / 3))];
		let mX = [-this.box.width, 0, this.box.width][(this.settings.get_int("default-snap") % 3)];
		let mY = [-this.box.height, 0, this.box.height][Math.floor((this.settings.get_int("default-snap") / 3))]
		this.state = State.CLOSING
		this.box.ease({
			opacity: 0,
			duration: instant == null || !instant ? 100 : 0,
			mode: Clutter.AnimationMode.EASE_OUT_QUAD,
			onComplete: () => {
				this.opened = false;
				this.hide();
				if (this.stateTimeout !== null) {
					clearTimeout(this.stateTimeout);
					this.stateTimeout = null;
				}
				this.stateTimeout = setTimeout(() => {
					this.state = State.CLOSED
				}, 500);
			},
		});
		this.ease({
			translation_x: posX + mX,
			translation_y: posY + mY,
			duration: instant == null || !instant ? 100 : 0,
			mode: Clutter.AnimationMode.EASE_OUT_QUAD
		})
		this.openedFromButton = false
		this.releaseAllKeys();
	}

	vfunc_button_press_event() {
		this.delta = [Clutter.get_current_event().get_coords()[0] - this.translation_x, Clutter.get_current_event().get_coords()[1] - this.translation_y];
		return this.startDragging(Clutter.get_current_event(), this.delta)
	}

	vfunc_button_release_event() {
		if (this._dragging && !this._grabbedSequence) {
			return this.endDragging();
		}
		return Clutter.EVENT_PROPAGATE;
	}
	
	vfunc_motion_event() {
		let event = Clutter.get_current_event();
		if (this._dragging && !this._grabbedSequence) {
			this.motionEvent(event);
		}
		return Clutter.EVENT_PROPAGATE;
	}

	vfunc_touch_event() {
		let event = Clutter.get_current_event();
		let sequence = event.get_event_sequence();

		if (!this._dragging && event.type() == Clutter.EventType.TOUCH_BEGIN) {
			this.delta = [event.get_coords()[0] - this.translation_x, event.get_coords()[1] - this.translation_y];
			this.startDragging(event, this.delta);
			return Clutter.EVENT_STOP;
		} else if (this._grabbedSequence && sequence.get_slot() === this._grabbedSequence.get_slot()) {
			if (event.type() == Clutter.EventType.TOUCH_UPDATE) {
				return this.motionEvent(event);
			} else if (event.type() == Clutter.EventType.TOUCH_END) {
				return this.endDragging();
			}
		}

		return Clutter.EVENT_PROPAGATE;
	}

	buildUI() {
		this.box.set_opacity(0);
		this.keys = [];
		let layoutName = Object.keys(layouts)[this.settings.get_int("layout")];
		let monitor = Main.layoutManager.primaryMonitor
		this.box.width = Math.round((monitor.width - this.settings.get_int("snap-spacing-px") * 2) * (layoutName.includes("Split") ? 1 : this.widthPercent))
		this.box.height = Math.round((monitor.height - this.settings.get_int("snap-spacing-px") * 2) * this.heightPercent)

		const grid = this.box.layout_manager
		grid.set_row_homogeneous(true)
		grid.set_column_homogeneous(!layoutName.includes("Split"))

		let gridLeft;
		let gridRight;
		let currentGrid = grid;
		let left;
		let right;

		if (layoutName.includes("Split")) {
			left = new St.Widget({
				layout_manager: new Clutter.GridLayout({
					orientation: Clutter.Orientation.HORIZONTAL,
					row_spacing: this.settings.get_int("border-spacing-px") * 2,
					column_spacing: this.settings.get_int("border-spacing-px") * 2,
					row_homogeneous: true,
					column_homogeneous: true
				}),
				width: Math.round((monitor.width - this.settings.get_int("snap-spacing-px") * 2) * this.widthPercent) / 2
			})
			gridLeft = left.layout_manager;
			let middle = new St.Widget({
				width: this.box.width * (1 - this.widthPercent) - 10 + this.settings.get_int("border-spacing-px")
			});
			right = new St.Widget({
				layout_manager: new Clutter.GridLayout({
					orientation: Clutter.Orientation.HORIZONTAL,
					row_spacing: this.settings.get_int("border-spacing-px") * 2,
					column_spacing: this.settings.get_int("border-spacing-px") * 2,
					row_homogeneous: true,
					column_homogeneous: true
				}),
				width: Math.round((monitor.width - this.settings.get_int("snap-spacing-px") * 2) * this.widthPercent) / 2
			})
			gridRight = right.layout_manager;
			this.box.add_child(left)
			this.box.add_child(middle)
			this.box.add_child(right)
		}

		this.shiftButtons = [];

		let currentLayout = layouts[layoutName];
		let width = 0;
		for (const c of currentLayout[0]) {
			width += (Object.hasOwn(c, "width") ? c.width : 1)
		}
		let rowSize;
		let halfSize;
		let r = 0;
		let c;
		const doAddKey = (keydef) => {
			const i = Object.hasOwn(keydef, "key") ? keycodes[keydef.key] : Object.hasOwn(keydef, "split") ? "split" : "empty space";
			if (i != null && typeof i !== 'string') {
				if (i.layers.default == null) {
					for (var key of Object.keys(i.layers)) {
						i.layers[key] = i.layers["_" + key]
					}
				}
				let params = {
					x_expand: true,
					y_expand: true
				}
				
				let iconKeys = ["left", "up", "right", "down", "space"]
				if (this.settings.get_boolean("show-icons")) {
					iconKeys = ["left", "up", "right", "down", "backspace", "tab", "capslock", "shift", "enter", "ctrl", "super", "alt", "space"]
				}
				if (iconKeys.some(j => { return i.layers.default.toLowerCase() == j })) {
					params.style_class = i.layers.default.toLowerCase() + "_btn"
					for (var key of Object.keys(i.layers)) {
						i.layers["_" + key] = i.layers[key]
						i.layers[key] = null
					}
				} else {
					params.label = i.layers.default
				}
				i.isMod = false
				if ([42, 54, 29, 125, 56, 100, 97, 58, 69].some(j => { return i.code == j })) {
					i.isMod = true;
				}
				const keyBtn = new St.Button(params)
				keyBtn.add_style_class_name('key')
				keyBtn.char = i
				if (i.code == 58) {
					this.keymap = Clutter.get_default_backend().get_default_seat().get_keymap()
					this.capslockConnect = this.keymap.connect("state-changed", (a, e) => {
						this.setCapsLock(keyBtn, this.keymap.get_caps_lock_state())
					})
				} else if (i.code == 69) {
					this.keymap = Clutter.get_default_backend().get_default_seat().get_keymap()
					this.numLockConnect = this.keymap.connect("state-changed", (a, e) => {
						this.setNumLock(keyBtn, this.keymap.get_num_lock_state())
					})
				} else if (i.code == 42 || i.code == 54) {
					this.shiftButtons.push(keyBtn)
				}
				currentGrid.attach(keyBtn, c, 6 + r, (Object.hasOwn(keydef, "width") ? keydef.width : 1) * 8, r == 0 ? 6 : (Object.hasOwn(keydef, "height") ? keydef.height : 1) * 8)
				keyBtn.visible = true
				c += (Object.hasOwn(keydef, "width") ? keydef.width : 1) * 8
				this.keys.push(keyBtn)
			} else if (i == "empty space") {
				c += (Object.hasOwn(keydef, "width") ? keydef.width : 1) * 8
			} else if (i == "split") {
				currentGrid = gridRight
				const size = c
				if (!halfSize) halfSize = size
			}
		}
		
		for (const kRow of currentLayout) {
			c = 0;
			if (layoutName.includes("Split")) {
				currentGrid = gridLeft;
			}
			for (const keydef of kRow) {
				if (keydef instanceof Array) {
					keydef.forEach(i => {doAddKey(i); r += 4; c -= 8});
					c += 8;
					r -= 8;
				} else {
					doAddKey(keydef)
				}
			}
			const size = c;
			if (!rowSize) rowSize = size;
			r += r == 0 ? 6 : 8
		}

		if (left != null) {
			this.set_reactive(false)
			left.add_style_class_name("boxLay");
			left.set_style("background-color: rgba(" + this.settings.get_double("background-r" + this.settings.scheme) + "," + this.settings.get_double("background-g" + this.settings.scheme) + "," + this.settings.get_double("background-b" + this.settings.scheme) + ", " + this.settings.get_double("background-a" + this.settings.scheme) + ");")
			right.add_style_class_name("boxLay");
			right.set_style("background-color: rgba(" + this.settings.get_double("background-r" + this.settings.scheme) + "," + this.settings.get_double("background-g" + this.settings.scheme) + "," + this.settings.get_double("background-b" + this.settings.scheme) + ", " + this.settings.get_double("background-a" + this.settings.scheme) + ");")
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				left.add_style_class_name("inverted");
				right.add_style_class_name("inverted");
			} else {
				left.add_style_class_name("regular");
				right.add_style_class_name("regular");
			}
			const settingsBtn = new St.Button({
				x_expand: true,
				y_expand: true
			})
			settingsBtn.add_style_class_name("settings_btn")
			settingsBtn.add_style_class_name("key")
			settingsBtn.connect("clicked", () => {
				this.settingsOpenFunction();
			})
			gridLeft.attach(settingsBtn, 0, 0, 8, 5)
			this.keys.push(settingsBtn)

			const closeBtn = new St.Button({
				x_expand: true,
				y_expand: true
			})
			closeBtn.add_style_class_name("close_btn")
			closeBtn.add_style_class_name("key")
			closeBtn.connect("clicked", () => {
				this.close();
				this.closedFromButton = true;
			})
			gridRight.attach(closeBtn, (rowSize - 8), 0, 8, 5)
			this.keys.push(closeBtn)
			
			let moveHandleLeft = new St.Button({
				x_expand: true,
				y_expand: true
			})
			moveHandleLeft.add_style_class_name("moveHandle")
			moveHandleLeft.set_style("font-size: " + this.settings.get_int("font-size-px") + "px; border-radius: " + (this.settings.get_boolean("round-key-corners") ? "5px;" : "0;") + "background-size: " + this.settings.get_int("font-size-px") + "px;");
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				moveHandleLeft.add_style_class_name("inverted");
			} else {
				moveHandleLeft.add_style_class_name("regular");
			}

			moveHandleLeft.connect("event", (actor, event) => {
				if (event.type() == Clutter.EventType.BUTTON_PRESS || event.type() == Clutter.EventType.TOUCH_BEGIN) {
					this.draggable = this.settings.get_boolean("enable-drag");
				}
				this.event(event, false)
			})
			gridLeft.attach(moveHandleLeft, 8, 0, (halfSize - 8), 5)

			let moveHandleRight = new St.Button({
				x_expand: true,
				y_expand: true
			})
			moveHandleRight.add_style_class_name("moveHandle")
			moveHandleRight.set_style("font-size: " + this.settings.get_int("font-size-px") + "px; border-radius: " + (this.settings.get_boolean("round-key-corners") ? "5px;" : "0;") + "background-size: " + this.settings.get_int("font-size-px") + "px;");
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				moveHandleRight.add_style_class_name("inverted");
			} else {
				moveHandleRight.add_style_class_name("regular");
			}

			moveHandleRight.connect("event", (actor, event) => {
				if (event.type() == Clutter.EventType.BUTTON_PRESS || event.type() == Clutter.EventType.TOUCH_BEGIN) {
					this.draggable = this.settings.get_boolean("enable-drag");
				}
				this.event(event, false)
			})
			gridRight.attach(moveHandleRight, (rowSize - halfSize), 0, (rowSize - halfSize - 4), 5)
			gridLeft.attach(new St.Widget({x_expand: true, y_expand: true}), 0, 5, halfSize, 1)
			gridRight.attach(new St.Widget({x_expand: true, y_expand: true}), (rowSize - halfSize), 5, (rowSize - halfSize + 4), 1)
		} else {
			this.box.add_style_class_name("boxLay");
			this.box.set_style("background-color: rgba(" + this.settings.get_double("background-r" + this.settings.scheme) + "," + this.settings.get_double("background-g" + this.settings.scheme) + "," + this.settings.get_double("background-b" + this.settings.scheme) + ", " + this.settings.get_double("background-a" + this.settings.scheme) + ");")
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				this.box.add_style_class_name("inverted");
			} else {
				this.box.add_style_class_name("regular");
			}

			const settingsBtn = new St.Button({
				x_expand: true,
				y_expand: true
			})
			settingsBtn.add_style_class_name("settings_btn")
			settingsBtn.add_style_class_name("key")
			settingsBtn.connect("clicked", () => {
				this.settingsOpenFunction();
			})
			grid.attach(settingsBtn, 0, 0, 8, 5)
			this.keys.push(settingsBtn)

			const closeBtn = new St.Button({
				x_expand: true,
				y_expand: true
			})
			closeBtn.add_style_class_name("close_btn")
			closeBtn.add_style_class_name("key")
			closeBtn.connect("clicked", () => {
				this.close();
				this.closedFromButton = true;
			})
			grid.attach(closeBtn, (rowSize - 8), 0, 8, 5)
			this.keys.push(closeBtn)
			
			let moveHandle= new St.Button({
				x_expand: true,
				y_expand: true
			})
			moveHandle.add_style_class_name("moveHandle")
			moveHandle.set_style("font-size: " + this.settings.get_int("font-size-px") + "px; border-radius: " + (this.settings.get_boolean("round-key-corners") ? "5px;" : "0;") + "background-size: " + this.settings.get_int("font-size-px") + "px;");
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				moveHandle.add_style_class_name("inverted");
			} else {
				moveHandle.add_style_class_name("regular");
			}

			moveHandle.connect("event", (actor, event) => {
				if (event.type() == Clutter.EventType.BUTTON_PRESS || event.type() == Clutter.EventType.TOUCH_BEGIN) {
					this.draggable = this.settings.get_boolean("enable-drag");
				}
				this.event(event, false)
			})
			grid.attach(moveHandle, 8, 0, (rowSize - 16), 5)
			grid.attach(new St.Widget({x_expand: true, y_expand: true}), 0, 5, rowSize, 1)
		}
		
		this.keys.forEach(item => {
			item.set_style("font-size: " + this.settings.get_int("font-size-px") + "px; border-radius: " + (this.settings.get_boolean("round-key-corners") ? "5px;" : "0;") + "background-size: " + this.settings.get_int("font-size-px") + "px; font-weight: " + (this.settings.get_boolean("font-bold") ? "bold" : "normal") + ";");
			if (this.lightOrDark(this.settings.get_double("background-r" + this.settings.scheme), this.settings.get_double("background-g" + this.settings.scheme), this.settings.get_double("background-b" + this.settings.scheme))) {
				item.add_style_class_name("inverted");
			} else {
				item.add_style_class_name("regular");
			}
			item.set_pivot_point(0.5, 0.5)
			item.connect("destroy", () => {
				if (item.button_pressed !== null) {
					clearTimeout(item.button_pressed)
					item.button_pressed == null
				}
				if (item.button_repeat !== null) {
					clearInterval(item.button_repeat)
					item.button_repeat == null
				}
				if (item.tap_pressed !== null) {
					clearTimeout(item.tap_pressed)
					item.tap_pressed == null
				}
				if (item.tap_repeat !== null) {
					clearInterval(item.tap_repeat)
					item.tap_repeat == null
				}
			})
			let pressEv = (evType) => {
				item.space_motion_handler = null
				item.set_scale(1.2, 1.2)
				item.add_style_pseudo_class("pressed")
				let player
				if (this.settings.get_boolean("play-sound")) {
					player = global.display.get_sound_player();
					player.play_from_theme("dialog-information", "tap", null)
				}
				if (["delete_btn", "backspace_btn", "up_btn", "down_btn", "left_btn", "right_btn"].some(e => item.has_style_class_name(e))) {
					item.button_pressed = setTimeout(() => {
						const oldModBtns = this.modBtns
						item.button_repeat = setInterval(() => {
							if (this.settings.get_boolean("play-sound")) {
								player.play_from_theme("dialog-information", "tap", null)
							}
							this.decideMod(item.char)

							for (var i of oldModBtns) {
								this.decideMod(i.char, i)
							}
						}, 100);
					}, 750);
				} else if (item.has_style_class_name("space_btn")) {
					item.button_pressed = setTimeout(() => {
						let lastPos = (item.get_transformed_position()[0] + item.get_transformed_size()[0] / 2)
						if (evType == "mouse") {
							item.space_motion_handler = item.connect("motion_event", (actor, event) => {
								let absX = event.get_coords()[0];
								if (Math.abs(absX - lastPos) > 20) {
									if (absX > lastPos) {
										this.sendKey([106])
									} else {
										this.sendKey([105])
									}
									lastPos = absX
								}
							})
						} else {
							item.space_motion_handler = item.connect("touch_event", (actor, event) => {
								if (event.type() == Clutter.EventType.TOUCH_UPDATE) {
									let absX = event.get_coords()[0];
									if (Math.abs(absX - lastPos) > 20) {
										if (absX > lastPos) {
											this.sendKey([106])
										} else {
											this.sendKey([105])
										}
										lastPos = absX
									}
								}
							})
						}
					}, 750)
				} else {
					item.key_pressed = true;
					item.button_pressed = setTimeout(() => {
						releaseEv()
					}, 1000);
				}
			}
			let releaseEv = () => {
				item.remove_style_pseudo_class("pressed")
				item.ease({
					scale_x: 1,
					scale_y: 1,
					duration: 100,
					mode: Clutter.AnimationMode.EASE_OUT_QUAD,
					onComplete: () => { item.set_scale(1, 1); }
				})
				if (item.button_pressed !== null) {
					clearTimeout(item.button_pressed)
					item.button_pressed == null
				}
				if (item.button_repeat !== null) {
					clearInterval(item.button_repeat)
					item.button_repeat == null
				}
				if (item.space_motion_handler !== null) {
					item.disconnect(item.space_motion_handler)
					item.space_motion_handler = null;
				} else if (item.key_pressed == true || item.space_motion_handler == null) {
					try {
						if (!item.char.isMod) {
							this.decideMod(item.char)
						} else {
							const modButton = item;
							this.decideMod(item.char, modButton)
						}
					} catch { }
				}
				item.key_pressed = false;
			}
			item.connect("button-press-event", () => pressEv("mouse"))
			item.connect("button-release-event", releaseEv)
			item.connect("touch-event", () => {
				if (Clutter.get_current_event().type() == Clutter.EventType.TOUCH_BEGIN) {
					pressEv("touch")
				} else if (Clutter.get_current_event().type() == Clutter.EventType.TOUCH_END || Clutter.get_current_event().type() == Clutter.EventType.TOUCH_CANCEL) {
					releaseEv()
				}
			})
		});
	}

	lightOrDark(r, g, b) {
		var hsp;
		hsp = Math.sqrt(
			0.299 * (r * r) +
			0.587 * (g * g) +
			0.114 * (b * b)
		);
		if (hsp > 127.5) {
			return true;
		} else {
			return false;
		}
	}
	releaseAllKeys() {
		let instances = [];

		function traverse(obj) {
			for (let key in obj) {
				if (obj.hasOwnProperty(key)) {
					if (key === "code") {
						instances.push(obj[key]);
					} else if (typeof obj[key] === 'object' && obj[key] !== null) {
						traverse(obj[key]);
					}
				}
			}
		}

		traverse(keycodes);
		instances.forEach(i => {
			this.inputDevice.notify_key(Clutter.get_current_event_time(), i, Clutter.KeyState.RELEASED);
		})

		this.keys.forEach(item => {
			item.key_pressed = false;
			if (item.button_pressed !== null) {
				clearTimeout(item.button_pressed)
				item.button_pressed == null
			}
			if (item.button_repeat !== null) {
				clearInterval(item.button_repeat)
				item.button_repeat == null
			}
			if (item.space_motion_handler !== null) {
				item.disconnect(item.space_motion_handler)
				item.space_motion_handler = null;
			}
		})
	}
	sendKey(keys) {
		try {
			for (var i = 0; i < keys.length; i++) {
				this.inputDevice.notify_key(Clutter.get_current_event_time(), keys[i], Clutter.KeyState.PRESSED);
			}
			if (this.keyTimeout !== null) {
				clearTimeout(this.keyTimeout);
				this.keyTimeout = null;
			}
			this.keyTimeout = setTimeout(() => {
				for (var j = keys.length - 1; j >= 0; j--) {
					this.inputDevice.notify_key(Clutter.get_current_event_time(), keys[j], Clutter.KeyState.RELEASED);
				}
			}, 100);
		} catch (err) {
			throw new Error("GJS-OSK: An unknown error occured. Please report this bug to the Issues page (https://github.com/Vishram1123/gjs-osk/issues):\n\n" + err + "\n\nKeys Pressed: " + keys);
		}
	}

	decideMod(i, mBtn) {
		if (i.code == 29 || i.code == 56 || i.code == 97 || i.code == 125) {
			this.setNormMod(mBtn);
		} else if (i.code == 100) {
			this.setAlt(mBtn);
		} else if (i.code == 42 || i.code == 54) {
			this.setShift(mBtn);
		} else if (i.code == 58 || i.code == 69) {
			this.sendKey([mBtn.char.code]);
		} else {
			this.mod.push(i.code);
			this.sendKey(this.mod);
			this.mod = [];
			this.modBtns.forEach(button => {
				button.remove_style_class_name("selected");
			});
			this.shiftButtons.forEach(i => { i.remove_style_class_name("selected") })
			this.resetAllMod();
			this.modBtns = [];
		}
	}

	setCapsLock(button, state) {
		if (state) {
			button.add_style_class_name("selected");
			this.capsL = true;
		} else {
			button.remove_style_class_name("selected");
			this.capsL = false;
		}
		this.updateKeyLabels();
	}

	setNumLock(button, state) {
		if (state) {
			button.add_style_class_name("selected");
			this.numsL = true;
		} else {
			button.remove_style_class_name("selected");
			this.numsL = false;
		}
		this.updateKeyLabels();
	}

	setAlt(button) {
		this.alt = !this.alt;
		this.updateKeyLabels();
		if (!this.alt) {
			this.sendKey([button.char.code]);
		}
		this.setNormMod(button);
	}

	setShift(button) {
		this.shift = !this.shift;
		this.updateKeyLabels();
		if (!this.shift) {
			this.sendKey([button.char.code]);
			this.shiftButtons.forEach(i => { i.remove_style_class_name("selected") })
		} else {
			this.shiftButtons.forEach(i => { i.add_style_class_name("selected") })
		}
		this.setNormMod(button);
	}

	updateKeyLabels() {
		this.keys.forEach(key => {
			if (key.char != undefined) {
				let layer = (this.alt ? 'alt' : '') + (this.shift ? 'shift' : '') + (this.numsL ? 'num' : '') + (this.capsL ? 'caps' : '') + (this.numsL || this.capsL ? 'lock' : '')
				if (layer == '') layer = 'default'
				key.label = key.char.layers[layer];
			}
		});
	}


	setNormMod(button) {
		if (this.mod.includes(button.char.code)) {
			this.mod.splice(this.mod.indexOf(button.char.code), this.mod.indexOf(button.char.code) + 1);
			if (!(button.char.code == 42) && !(button.char.code == 54))
				button.remove_style_class_name("selected");
			this.modBtns.splice(this.modBtns.indexOf(button), this.modBtns.indexOf(button) + 1);
			this.sendKey([button.char.code]);
		} else {
			if (!(button.char.code == 42) && !(button.char.code == 54))
				button.add_style_class_name("selected");
			this.mod.push(button.char.code);
			this.modBtns.push(button);
		}
	}

	resetAllMod() {
		this.shift = false;
		this.alt = false;
		this.updateKeyLabels()
	}
}