/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */

"use strict";

// dep: geo.base
// dep: kiri.api
// dep: kiri.main
// dep: kiri.lang
// dep: kiri.stats
// dep: kiri.consts
// dep: kiri.platform
// dep: kiri.selection
// use: kiri.tools
// use: kiri.pack
gapp.register("kiri.init", [], (root, exports) => {

    const { base, kiri } = root;
    const { api, catalog, conf, consts, space } = kiri;
    const { sdb, stats, js2o, o2js, platform, selection, ui, uc } = api;
    const { VIEWS, MODES, SEED } = consts;
    const { LANG, LOCAL, SETUP } = api.const;

    const WIN = self.window,
        DOC = self.document,
        DEG2RAD = Math.PI / 180,
        STARTMODE = SETUP.sm && SETUP.sm.length === 1 ? SETUP.sm[0] : null,
        { CAM, SLA, FDM, LASER, DRAG, WJET, WEDM } = MODES,
        TWOD = [LASER, DRAG, WJET, WEDM],
        THREED = [FDM, CAM, SLA],
        GCODE = [FDM, CAM, ...TWOD],
        CAM_LZR = [CAM, ...TWOD],
        FDM_LZR = [FDM, ...TWOD],
        FDM_CAM = [FDM, CAM],
        proto = location.protocol,
        ver = Date.now().toString(36),
        separator = true,
        driven = true;

    let currentDevice = null,
        deviceURL = null,
        deviceTexture = null,
        deviceFilter = null,
        deviceImage = null,
        selectedTool = null,
        editTools = null,
        maxTool = 0,
        platformColor,
        contextInt;

    // extend KIRI API with local functions
    api.show.devices = showDevices;
    api.device.set = selectDevice;
    api.device.clone = cloneDevice;

    function settings() {
        return api.conf.get();
    }

    function checkSeed(then) {
        // skip sample object load in onshape (or any script postload)
        if (!sdb[SEED]) {
            sdb[SEED] = new Date().getTime();
            if (!SETUP.s && api.feature.seed) {
                if (SETUP.debug) {
                    return then();
                }
                platform.load_stl("/obj/cube.stl", function(vert) {
                    catalog.putFile("sample cube.stl", vert);
                    platform.update_bounds();
                    space.view.home();
                    setTimeout(() => { api.space.save(true) },500);
                    then();
                    api.help.show();
                });
                return true;
            }
        }
        return false;
    }

    function unitsSave() {
        api.conf.update({ controller: true });
        platform.update_size();
    }

    function aniMeshSave() {
        api.conf.update({ controller: true });
        api.conf.save();
    }

    function lineTypeSave() {
        const sel = ui.lineType.options[ui.lineType.selectedIndex];
        if (sel) {
            settings().controller.lineType = sel.value;
            api.conf.save();
        }
    }

    function filamentSourceEditUpdate() {
        if (ui.filamentSource && ui.filamentSourceEdit) {
            api.event.emit("filament.source");
            const sel = ui.filamentSource.options[ui.filamentSource.selectedIndex];
            if (sel) {
                ui.filamentSourceEdit.style.display = sel.value === 'palette3' ? '' : 'none';
            }
        }
    }

    function filamentSourceSave() {
        const sel = ui.filamentSource.options[ui.filamentSource.selectedIndex];
        if (sel) {
            settings().device.filamentSource = sel.value;
            api.conf.save();
        }
        filamentSourceEditUpdate();
    }

    function thinWallSave() {
        let opt = ui.sliceDetectThin;
        let level = opt.options[opt.selectedIndex];
        if (level) {
            settings().process.sliceDetectThin = level.value;
            api.conf.save();
        }
    }

    function detailSave() {
        let level = ui.detail.options[ui.detail.selectedIndex];
        if (level) {
            level = level.value;
            let rez = base.config.clipperClean;
            switch (level) {
                case '100': rez = 50; break;
                case '75': rez = base.config.clipperClean; break;
                case '50': rez = 500; break;
                case '25': rez = 1000; break;
            }
            kiri.client.config({
                base: { clipperClean: rez }
            });
            settings().controller.detail = level;
            api.conf.save();
        }
    }

    function speedSave() {
        settings().controller.showSpeeds = ui.showSpeeds.checked;
        api.view.update_speeds();
    }

    function zAnchorSave() {
        api.conf.update();
        api.platform.update_top_z();
    }

    function setThreaded(bool) {
        if (bool) {
            kiri.client.pool.start();
        } else {
            kiri.client.pool.stop();
        }
        return bool;
    }

    api.event.on("set.threaded", bool => setThreaded(bool));

    function booleanSave() {
        let control = settings().controller;
        let doAlert = ui.ortho.checked !== control.ortho;
        if (control.assembly != ui.assembly.checked) {
            kiri.client.wasm(ui.assembly.checked);
        }
        if (control.antiAlias != ui.antiAlias.checked) {
            api.show.alert('Page Reload Required to Change Aliasing');
        }
        control.shiny = ui.shiny.checked;
        control.decals = ui.decals.checked;
        control.drawer = ui.drawer.checked;
        control.scrolls = ui.scrolls.checked;
        control.showOrigin = ui.showOrigin.checked;
        control.showRulers = ui.showRulers.checked;
        control.autoLayout = ui.autoLayout.checked;
        control.freeLayout = ui.freeLayout.checked;
        control.spaceRandoX = ui.spaceRandoX.checked;
        control.autoSave = ui.autoSave.checked;
        control.antiAlias = ui.antiAlias.checked;
        control.reverseZoom = ui.reverseZoom.checked;
        control.dark = ui.dark.checked;
        control.exportOcto = ui.exportOcto.checked;
        control.exportGhost = ui.exportGhost.checked;
        control.exportLocal = ui.exportLocal.checked;
        control.exportThumb = ui.exportThumb.checked;
        control.exportPreview = ui.exportPreview.checked;
        control.healMesh = ui.healMesh.checked;
        control.threaded = setThreaded(ui.threaded.checked);
        control.assembly = ui.assembly.checked;
        control.ortho = ui.ortho.checked;
        control.devel = ui.devel.checked;
        space.view.setZoom(control.reverseZoom, control.zoomSpeed);
        // platform.layout();
        api.conf.save();
        api.platform.update_size();
        updateStats();
        updateDrawer();
        if (control.decals && !control.dark) {
            // disable decals in dark mode
            loadDeviceTexture(currentDevice, deviceTexture);
        } else {
            clearDeviceTexture();
        }
        api.event.emit('boolean.update');
        if (doAlert) {
            api.show.alert("change requires page refresh");
        }
    }

    function updateDrawer() {
        const { drawer, scrolls } = settings().controller;
        $c('app', drawer  ? 'slideshow' : '',   drawer  ? '' : 'slideshow');
        $c('app', scrolls ? '' : 'hide-scroll', scrolls ? 'hide-scroll' : '');
    }

    function updateStats() {
        if (self.debug !== true) {
            return;
        }
        let { div, fps, rms, rnfo } = ui.stats;
        div.style.display = 'flex';
        setInterval(() => {
            const nrms = space.view.getRMS().toFixed(1);
            const nfps = space.view.getFPS().toFixed(1);
            const rend = space.renderInfo();
            const { memory, render } = rend;
            if (nfps !== fps.innerText) {
                fps.innerText = nfps;
            }
            if (nrms !== rms.innerText) {
                rms.innerText = nrms;
            }
            if (rnfo.offsetParent !== null) {
                rnfo.innerHTML = Object.entries({ ...memory, ...render, render_ms: nrms, frames_sec: nfps }).map(row => {
                    return `<div>${row[0]}</div><label>${base.util.comma(row[1])}</label>`
                }).join('');
            }
        }, 100);
    }

    function parentWithClass(el, classname) {
        while (el) {
            if (el.classList.contains(classname)) {
                return el;
            }
            el = el.parentNode;
        }
        return el;
    }

    function onBooleanClick(el) {
        uc.refresh();
        api.conf.update();
        DOC.activeElement.blur();
        api.event.emit("boolean.click");
        updateLaserState();
        if (el === ui.camStockIndexed) {
            api.space.set_focus();
        }
    }

    function onButtonClick(ev) {
        let target = ev.target;
        while (target && target.tagName !== 'BUTTON') {
            target = target.parentNode;
        }
        api.event.emit("button.click", target);
    }

    function inputHasFocus() {
        let active = DOC.activeElement;
        return active && (active.nodeName === "INPUT" || active.nodeName === "TEXTAREA");
    }

    function cca(c) {
        return c.charCodeAt(0);
    }

    function keyUpHandler(evt) {
        if (api.feature.on_key) {
            if (api.feature.on_key({up:evt})) return;
        }
        switch (evt.keyCode) {
            // escape
            case 27:
                // blur text input focus
                DOC.activeElement.blur();
                // dismiss modals
                api.modal.hide();
                // deselect widgets
                platform.deselect();
                // hide all dialogs
                api.dialog.hide();
                // cancel slicing
                api.function.cancel();
                // and send an event (used by FDM client)
                api.event.emit("key.esc");
                break;
        }
        return false;
    }

    function keyDownHandler(evt) {
        if (api.modal.visible()) {
            return false;
        }
        if (api.feature.on_key) {
            if (api.feature.on_key({down:evt})) return;
        }
        let move = evt.altKey ? 5 : 0,
            deg = move ? 0 : -Math.PI / (evt.shiftKey ? 36 : 2);
        switch (evt.keyCode) {
            case 8: // apple: delete/backspace
            case 46: // others: delete
                if (inputHasFocus()) return false;
                platform.delete(api.selection.meshes());
                evt.preventDefault();
                break;
            case 37: // left arrow
                if (inputHasFocus()) return false;
                if (deg) api.selection.rotate(0, 0, -deg);
                if (move > 0) api.selection.move(-move, 0, 0);
                evt.preventDefault();
                break;
            case 39: // right arrow
                if (inputHasFocus()) return false;
                if (deg) api.selection.rotate(0, 0, deg);
                if (move > 0) api.selection.move(move, 0, 0);
                evt.preventDefault();
                break;
            case 38: // up arrow
                if (inputHasFocus()) return false;
                if (evt.metaKey) return api.show.layer(api.var.layer_at+1);
                if (deg) api.selection.rotate(deg, 0, 0);
                if (move > 0) api.selection.move(0, move, 0);
                evt.preventDefault();
                break;
            case 40: // down arrow
                if (inputHasFocus()) return false;
                if (evt.metaKey) return api.show.layer(api.var.layer_at-1);
                if (deg) api.selection.rotate(-deg, 0, 0);
                if (move > 0) api.selection.move(0, -move, 0);
                evt.preventDefault();
                break;
            case 65: // 'a' for select all
                if (evt.metaKey || evt.ctrlKey) {
                    if (inputHasFocus()) return false;
                    evt.preventDefault();
                    platform.deselect();
                    platform.select_all();
                }
                break;
            case 83: // 's' for save workspace
                if (evt.ctrlKey) {
                    evt.preventDefault();
                    api.conf.save();
                    console.log("settings saved");
                } else
                if (evt.metaKey) {
                    evt.preventDefault();
                    api.space.save();
                }
                break;
            case 76: // 'l' for restore workspace
                if (evt.metaKey) {
                    evt.preventDefault();
                    api.space.restore();
                }
                break;
        }
    }

    function keyHandler(evt) {
        let handled = true;
        if (api.modal.visible() || inputHasFocus()) {
            return false;
        }
        if (api.feature.on_key) {
            if (api.feature.on_key({key:evt})) return;
        }
        if (evt.ctrlKey) {
            switch (evt.key) {
                case 'g': return api.group.merge();
                case 'u': return api.group.split();
            }
        }
        switch (evt.charCode) {
            case cca('`'): api.show.slices(0); break;
            case cca('0'): api.show.slices(api.var.layer_max); break;
            case cca('1'): api.show.slices(api.var.layer_max/10); break;
            case cca('2'): api.show.slices(api.var.layer_max*2/10); break;
            case cca('3'): api.show.slices(api.var.layer_max*3/10); break;
            case cca('4'): api.show.slices(api.var.layer_max*4/10); break;
            case cca('5'): api.show.slices(api.var.layer_max*5/10); break;
            case cca('6'): api.show.slices(api.var.layer_max*6/10); break;
            case cca('7'): api.show.slices(api.var.layer_max*7/10); break;
            case cca('8'): api.show.slices(api.var.layer_max*8/10); break;
            case cca('9'): api.show.slices(api.var.layer_max*9/10); break;
            case cca('?'):
                api.help.show();
                break;
            case cca('Z'): // reset stored state
                uc.confirm('clear all settings and preferences?').then(yes => {
                    if (yes) sdb.clear();
                });
                break;
            case cca('C'): // refresh catalog
                catalog.refresh();
                break;
            case cca('i'): // file import
                api.event.import();
                break;
            case cca('S'): // slice
            case cca('s'): // slice
                if (evt.shiftKey) {
                    api.show.alert('CAPS lock on?');
                }
                api.function.slice();
                break;
            case cca('P'): // prepare
            case cca('p'): // prepare
                if (evt.shiftKey) {
                    api.show.alert('CAPS lock on?');
                }
                if (api.mode.get() !== 'SLA') {
                    // hidden in SLA mode
                    api.function.print();
                }
                break;
            case cca('X'): // export
            case cca('x'): // export
                if (evt.shiftKey) {
                    api.show.alert('CAPS lock on?');
                }
                api.function.export();
                break;
            case cca('g'): // CAM animate
                api.function.animate();
                break;
            case cca('O'): // manual rotation
                rotateInputSelection();
                break;
            case cca('r'): // recent files
                api.modal.show('files');
                break;
            case cca('q'): // preferences
                api.modal.show('prefs');
                break;
            case cca('l'): // device
                settingsLoad();
                break;
            case cca('e'): // device
                showDevices();
                break;
            // case cca('w'): // scale
            //     api.event.emit("tool.next");
            //     break;
            case cca('o'): // tools
                showTools();
                break;
            case cca('c'): // local devices
                api.show.local();
                break;
            case cca('v'): // toggle single slice view mode
                if (api.view.get() === VIEWS.ARRANGE) {
                    api.space.set_focus(api.selection.widgets());
                }
                if (api.var.layer_hi == api.var.layer_lo) {
                    api.var.layer_lo = 0;
                } else {
                    api.var.layer_lo = api.var.layer_hi;
                }
                api.show.slices();
                break;
            case cca('d'): // duplicate object
                duplicateSelection();
                break;
            case cca('m'): // mirror object
                mirrorSelection();
                break;
            case cca('a'):
                if (api.view.get() === VIEWS.ARRANGE) {
                    // auto arrange items on platform
                    platform.layout();
                    if (!api.conf.get().controller.spaceRandoX) {
                        api.space.set_focus(api.selection.widgets());
                    }
                } else {
                    // go to arrange view
                    api.view.set(VIEWS.ARRANGE);
                }
                break;
            default:
                api.event.emit('keypress', evt);
                handled = false;
                break;
        }
        if (handled) {
            evt.preventDefault();
            evt.stopPropagation();
        }
        return false;
    }

    function duplicateSelection() {
        api.selection.duplicate();
    }

    function mirrorSelection() {
        api.selection.mirror();
    }

    function keys(o) {
        let key, list = [];
        for (key in o) { if (o.hasOwnProperty(key)) list.push(key) }
        return list.sort();
    }

    function clearSelected(children) {
        for (let i=0; i<children.length; i++) {
            children[i].setAttribute('class','');
        }
    }

    function rotateInputSelection() {
        if (api.selection.meshes().length === 0) {
            api.show.alert("select object to rotate");
            return;
        }
        let coord = (prompt("Enter X,Y,Z degrees of rotation") || '').split(','),
            prod = Math.PI / 180,
            x = parseFloat(coord[0] || 0.0) * prod,
            y = parseFloat(coord[1] || 0.0) * prod,
            z = parseFloat(coord[2] || 0.0) * prod;

        api.selection.rotate(x, y, z);
    }

    function positionSelection() {
        if (api.selection.meshes().length === 0) {
            api.show.alert("select object to position");
            return;
        }
        let current = settings(),
            { device, process} = current,
            center = process.outputOriginCenter || process.camOriginCenter || device.bedRound,
            bounds = boundsSelection(),
            coord = prompt("Enter X,Y coordinates for selection").split(','),
            x = parseFloat(coord[0] || 0.0),
            y = parseFloat(coord[1] || 0.0),
            z = parseFloat(coord[2] || 0.0);

        if (!center) {
            x = x - device.bedWidth/2 + (bounds.max.x - bounds.min.x)/2;
            y = y - device.bedDepth/2 + (bounds.max.y - bounds.min.y)/2
        }

        api.selection.move(x, y, z, true);
    }

    function deviceExport(exp, name) {
        name = (name || "device")
            .toLowerCase()
            .replace(/ /g,'_')
            .replace(/\./g,'_');
        uc.prompt("Export Device Filename", name).then(name => {
            if (name) {
                api.util.download(exp, `${name}.km`);
            }
        });
    }

    function objectsExport(format = "stl") {
        // return api.selection.export();
        uc.confirm("Export Filename", {ok:true, cancel: false}, `selected.${format}`).then(name => {
            if (!name) return;
            if (name.toLowerCase().indexOf(`.${format}`) < 0) {
                name = `${name}.${format}`;
            }
            api.util.download(api.selection.export(format), name);
        });
    }

    function profileExport() {
        const opt = {pre: [
            "<div class='f-col a-center gap5 mlr10'>",
            "  <h3>Workspace Export</h3>",
            "  <label>This will create a backup of your</label>",
            "  <label>workspace, devices, and settings</label>",
            "  <span class='mt10'><input id='excwork' type='checkbox'>&nbsp;Exclude meshes</span>",
            "</div>"
        ]};
        let suggestion = "workspace";
        let file = api.widgets.all()[0]?.meta.file || '';
        if (file) {
            suggestion = `${suggestion}_${file.split('.')[0]}`.replaceAll(' ','_');
        };
        uc.confirm("Filename", {ok:true, cancel: false}, suggestion, opt).then(name => {
            if (!name) return;

            let work = !$('excwork').checked;
            let json = api.conf.export({work, clear:true});

            kiri.client.zip([
                {name:"workspace.json", data:JSON.stringify(json)}
            ], progress => {
                api.show.progress(progress.percent/100, "compressing workspace");
            }, output => {
                api.show.progress(0);
                api.util.download(output, `${name}.kmz`);
            });
        });
    }

    function settingsSave(ev, name) {
        if (ev) {
            ev.stopPropagation();
            ev.preventDefault();
        }

        api.dialog.hide();
        let mode = api.mode.get(),
            s = settings(),
            def = "default",
            cp = s.process,
            pl = s.sproc[mode],
            lp = s.cproc[mode],
            saveAs = (name) => {
                if (!name) {
                    return;
                }
                let np = pl[name] = {};
                cp.processName = name;
                pl[name] = Object.clone(cp);
                for (let k in cp) {
                    if (!cp.hasOwnProperty(k)) continue;
                    np[k] = cp[k];
                }
                s.cproc[mode] = name;
                s.devproc[s.device.deviceName] = name;
                api.conf.save();
                api.conf.update();
                api.event.settings();
                sync_put();
            };

        if (name) {
            saveAs(name);
        } else {
            uc.prompt("Save Settings As", cp ? lp || def : def).then(saveAs);
        }
    }

    function settingsLoad() {
        api.conf.show();
    }

    function putLocalDevice(devicename, obj) {
        settings().devices[devicename] = obj;
        api.conf.save();
    }

    function removeLocalDevice(devicename) {
        delete settings().devices[devicename];
        api.conf.save();
        sync_put();
    }

    function isLocalDevice(devicename) {
        return settings().devices[devicename] ? true : false;
    }

    function getSelectedDevice() {
        return api.device.get();
    }

    function selectDevice(devicename) {
        if (isLocalDevice(devicename)) {
            setDeviceCode(settings().devices[devicename], devicename);
        } else {
            let code = devices[api.mode.get_lower()][devicename];
            if (code) {
                setDeviceCode(code, devicename);
            }
        }
    }

    // only for local filters
    function cloneDevice() {
        let name = `${getSelectedDevice().replace(/\./g,' ')}`;
        let code = api.clone(settings().device);
        code.mode = api.mode.get();
        if (name.toLowerCase().indexOf('my ') >= 0) {
            name = `${name} copy`;
        } else {
            name = `My ${name}`;
        }
        putLocalDevice(name, code);
        setDeviceCode(code, name);
        sync_put();
    }

    function updateLaserState() {
        const dev = settings().device;
        $('laser-on').style.display = dev.useLaser ? 'flex' : 'none';
        $('laser-off').style.display = dev.useLaser ? 'flex' : 'none';
    }

    function setDeviceCode(code, devicename) {
        api.event.emit('device.select', {devicename, code});
        try {
            if (typeof(code) === 'string') code = js2o(code) || {};

            api.event.emit('device.set', devicename);

            let mode = api.mode.get(),
                lmode = mode.toLowerCase(),
                current = settings(),
                local = isLocalDevice(devicename),
                dev = current.device = conf.device_from_code(code,mode),
                dproc = current.devproc[devicename], // last process name for this device
                newdev = dproc === undefined,   // first time device is selected
                predev = current.filter[mode],  // previous device selection
                chgdev = predev !== devicename; // device is changing

            // fill missing device fields
            conf.fill_cull_once(dev, conf.defaults[lmode].d);

            // first time device use, add any print profiles and set to default if present
            if (code.profiles) {
                for (let profile of code.profiles) {
                    let profname = profile.processName;
                    // if no saved profile by that name for this mode...
                    if (!current.sproc[mode][profname]) {
                        console.log('adding profile', profname, 'to', mode);
                        current.sproc[mode][profname] = profile;
                    }
                    // if it's a new device, seed the new profile name as last profile
                    if (newdev && !current.devproc[devicename]) {
                        console.log('setting default profile for new device', devicename, 'to', profname);
                        current.devproc[devicename] = dproc = profname;
                    }
                }
            }

            dev.new = false;
            dev.deviceName = devicename;

            // ui.deviceName.value = devicename;
            ui.deviceBelt.checked = dev.bedBelt;
            ui.deviceRound.checked = dev.bedRound;
            ui.deviceOrigin.checked = dev.outputOriginCenter || dev.originCenter || dev.bedRound;
            ui.fwRetract.checked = dev.fwRetract;
            if (!dev.filamentSource) ui.filamentSource.selectedIndex = 0;

            // add extruder selection buttons
            if (dev.extruders) {
                let ext = api.lists.extruders = [];
                dev.internal = 0;
                for (let i=0; i<dev.extruders.length; i++) {
                    ext.push({id:i, name:i});
                }
            }

            // disable editing for non-local devices
            [
                // ui.deviceName,
                ui.gcodePre,
                ui.gcodePost,
                ui.bedDepth,
                ui.bedWidth,
                ui.maxHeight,
                ui.useLaser,
                ui.resolutionX,
                ui.resolutionY,
                ui.deviceOrigin,
                ui.deviceRound,
                ui.deviceBelt,
                ui.fwRetract,
                ui.filamentSource,
                ui.deviceZMax,
                ui.gcodeTime,
                ui.gcodeFan,
                ui.gcodeFeature,
                ui.gcodeTrack,
                ui.gcodeLayer,
                ui.extFilament,
                ui.extNozzle,
                ui.spindleMax,
                ui.gcodeSpindle,
                ui.gcodeDwell,
                ui.gcodeChange,
                ui.gcodeFExt,
                ui.gcodeSpace,
                ui.gcodeStrip,
                ui.gcodeLaserOn,
                ui.gcodeLaserOff,
                ui.extPrev,
                ui.extNext,
                ui.extAdd,
                ui.extDel,
                ui.extOffsetX,
                ui.extOffsetY,
                ui.extSelect,
                ui.extDeselect
            ].forEach(function(e) {
                e.disabled = !local;
            });

            ui.deviceSave.disabled = !local;
            ui.deviceDelete.disabled = !local;
            ui.deviceRename.disabled = !local;
            ui.deviceExport.disabled = !local;
            ui.deviceAdd.style.display = mode === 'SLA' ? 'none' : '';

            if (local) {
                ui.deviceAdd.innerText = "copy";
                ui.deviceDelete.style.display = '';
                ui.deviceRename.style.display = '';
                ui.deviceExport.style.display = '';
            } else {
                ui.deviceAdd.innerText = "customize";
                ui.deviceDelete.style.display = 'none';
                ui.deviceRename.style.display = 'none';
                ui.deviceExport.style.display = 'none';
            }
            ui.deviceAdd.disabled = dev.noclone;

            api.conf.update_fields();
            space.platform.setBelt(isBelt());
            platform.update_size();
            platform.update_origin();
            platform.update();
            updateLaserState();

            // store current device name for this mode
            current.filter[mode] = devicename;
            // cache device record for this mode (restored in setMode)
            current.cdev[mode] = currentDevice = dev;

            if (dproc) {
                // restore last process associated with this device
                api.conf.load(null, dproc);
            } else {
                api.conf.update();
            }

            api.conf.save();

            if (isBelt()) {
                // space.view.setHome(dev.bedBelt ? Math.PI/2 : 0, Math.PI / 2.5);
                space.view.setHome(0, Math.PI / 2.5);
            } else {
                space.view.setHome(0);
            }
            // when changing devices, update focus on widgets
            if (chgdev) {
                setTimeout(api.space.set_focus, 0);
            }

            uc.refresh(1);
            filamentSourceEditUpdate();

            if (dev.imageURL) {
                if (dev.imageURL !== deviceURL) {
                    deviceURL = dev.imageURL;
                    loadDeviceImage(dev);
                }
            } else {
                clearDeviceTexture();
            }
        } catch (e) {
            console.log({error:e, device:code, devicename});
            api.show.alert(`invalid or deprecated device: "${devicename}"`, 10);
            api.show.alert(`please select a new device`, 10);
            throw e;
            showDevices();
        }
        api.function.clear();
        api.event.settings();
    }

    function clearDeviceTexture() {
        if (deviceImage) {
            space.world.remove(deviceImage);
            deviceImage = null;
            deviceURL = null;
        }
    }

    function loadDeviceImage(dev, url) {
        let turl = url || dev.imageURL;
        if (!turl) return;
        new THREE.TextureLoader().load(turl, texture => {
            loadDeviceTexture(dev, texture);
        }, inc => {
            console.log({load_inc: inc});
        }, error => {
            console.log({load_error: error, turl});
            clearDeviceTexture();
        });
    }

    function loadDeviceTexture(dev, texture) {
        clearDeviceTexture();
        deviceTexture = texture;
        let { decals, dark } = api.conf.get().controller;
        // disable decals in dark mode
        if (!(texture && decals && !dark)) {
            return;
        }
        let { width, height } = texture.image;
        let { bedWidth, bedDepth, bedHeight } = dev;
        let scale = dev.imageScale || 0.75;
        let img_ratio = width / height;
        if (scale <= 1) {
            let dev_ratio = bedWidth / bedDepth;
            if (dev_ratio > img_ratio) {
                scale *= bedDepth / height;
            } else {
                scale *= bedWidth / width;
            }
        } else if (scale > 1) {
            scale = (scale / Math.max(width, height));
        }
        width *= scale;
        height *= scale;
        let pos = null;
        if (true) switch (dev.imageAnchor) {
            case 1: pos = { x: -(bedWidth - width)/2, y:  (bedDepth - height)/2 }; break;
            case 2: pos = { x: 0,                     y:  (bedDepth - height)/2 }; break;
            case 3: pos = { x:  (bedWidth - width)/2, y:  (bedDepth - height)/2 }; break;
            case 4: pos = { x: -(bedWidth - width)/2, y:  0                     }; break;
            case 5: pos = { x:  (bedWidth - width)/2, y:  0                     }; break;
            case 6: pos = { x: -(bedWidth - width)/2, y: -(bedDepth - height)/2 }; break;
            case 7: pos = { x: 0,                     y: -(bedDepth - height)/2 }; break;
            case 8: pos = { x:  (bedWidth - width)/2, y: -(bedDepth - height)/2 }; break;
        }
        let geometry = new THREE.PlaneGeometry(width, height, 1),
            material = new THREE.MeshBasicMaterial({ map: texture, transparent: true }),
            mesh = new THREE.Mesh(geometry, material);
        mesh.position.z = -bedHeight;
        mesh.renderOrder = -1;
        if (pos) {
            mesh.position.x = pos.x;
            mesh.position.y = pos.y;
        }
        space.world.add(deviceImage = mesh);
    }

    function updateDeviceName(newname) {
        let selected = api.device.get(),
            devs = settings().devices;
        if (newname !== selected) {
            devs[newname] = devs[selected];
            delete devs[selected];
            selectDevice(newname);
            updateDeviceList();
        }
    }

    function updateDeviceSize() {
        api.conf.update();
        platform.update_size();
        platform.update_origin();
    }

    function renderDevices(devices) {
        let selected = api.device.get() || devices[0],
            features = api.feature,
            devs = settings().devices,
            dfilter = typeof(features.device_filter) === 'function' ? features.device_filter : undefined;

        for (let local in devs) {
            if (!(devs.hasOwnProperty(local) && devs[local])) {
                continue;
            }
            let dev = devs[local],
                fdmCode = dev.cmd,
                fdmMode = (api.mode.get() === 'FDM');

            if (dev.mode ? (dev.mode === api.mode.get()) : (fdmCode ? fdmMode : !fdmMode)) {
                devices.push(local);
            }
        };

        devices = devices.sort();

        api.event.emit('devices.render', devices);

        ui.deviceSave.onclick = function() {
            api.event.emit('device.save');
            api.function.clear();
            api.conf.save();
            sync_put();
            showDevices();
            api.modal.hide();
        };
        ui.deviceAdd.onclick = function() {
            api.function.clear();
            cloneDevice();
            showDevices();
        };
        ui.deviceDelete.onclick = function() {
            api.function.clear();
            removeLocalDevice(getSelectedDevice());
            selectDevice(getModeDevices()[0]);
            showDevices();
        };
        ui.deviceRename.onclick = function() {
            const newname = prompt(`Rename "${selected}`, selected);
            if (newname) updateDeviceName(newname);
        };
        ui.deviceExport.onclick = function(event) {
            const record = {
                version: kiri.version,
                device: selected,
                process: api.process.code(),
                profiles: event.altKey ? api.settings.prof() : undefined,
                code: devs[selected],
                time: Date.now()
            };
            let exp = api.util.b64enc(record);
            api.device.export(exp, selected, { event, record });
        };

        let dedup = {};
        let list_cdev = [];
        let list_mdev = [];
        devices.forEach(function(device, index) {
            // prevent device from appearing twice
            // such as local name = standard device name
            if (dedup[device]) {
                return;
            }
            dedup[device] = device;
            let loc = isLocalDevice(device);
            if (dfilter && dfilter(device) === false) {
                return;
            }
            if (loc) {
                list_mdev.push(h.option(device));
            } else {
                list_cdev.push(h.option(device));
            }
        });

        let dev_list = $('dev-list');
        h.bind(dev_list, [
            h.option({ _: '-- My Devices --', disabled: true }),
            ...list_mdev,
            h.option({ _: '-- Stock Devices --', disabled: true }),
            ...list_cdev
        ]);
        let dev_opts = [...dev_list.options].map(o => o.label);
        dev_list.selectedIndex = dev_opts.indexOf(selected);
        dev_list.onchange = ev => {
            const seldev = dev_list.options[dev_list.selectedIndex];
            selectDevice(seldev.label);
            api.platform.layout();
        }
        selectDevice(selected);
    }

    function renderTools() {
        ui.toolSelect.innerHTML = '';
        maxTool = 0;
        editTools.forEach(function(tool, index) {
            maxTool = Math.max(maxTool, tool.number);
            tool.order = index;
            let opt = DOC.createElement('option');
            opt.appendChild(DOC.createTextNode(tool.name));
            opt.onclick = function() { selectTool(tool) };
            ui.toolSelect.appendChild(opt);
        });
    }

    function selectTool(tool) {
        selectedTool = tool;
        ui.toolName.value = tool.name;
        ui.toolNum.value = tool.number;
        ui.toolFluteDiam.value = tool.flute_diam;
        ui.toolFluteLen.value = tool.flute_len;
        ui.toolShaftDiam.value = tool.shaft_diam;
        ui.toolShaftLen.value = tool.shaft_len;
        ui.toolTaperTip.value = tool.taper_tip || 0;
        ui.toolMetric.checked = tool.metric;
        ui.toolType.selectedIndex = ['endmill','ballmill','tapermill'].indexOf(tool.type);
        if (tool.type === 'tapermill') {
            ui.toolTaperAngle.value = kiri.driver.CAM.calcTaperAngle(
                (tool.flute_diam - tool.taper_tip) / 2, tool.flute_len
            ).round(1);
        } else {
            ui.toolTaperAngle.value = 0;
        }
        renderTool(tool);
    }

    function otag(o) {
        if (Array.isArray(o)) {
            let out = []
            o.forEach(oe => out.push(otag(oe)));
            return out.join('');
        }
        let tags = [];
        Object.keys(o).forEach(key => {
            let val = o[key];
            let att = [];
            Object.keys(val).forEach(tk => {
                let tv = val[tk];
                att.push(`${tk.replace(/_/g,'-')}="${tv}"`);
            });
            tags.push(`<${key} ${att.join(' ')}></${key}>`);
        });
        return tags.join('');
    }

    function renderTool(tool) {
        let type = selectedTool.type;
        let taper = type === 'tapermill';
        ui.toolTaperAngle.disabled = taper ? undefined : 'true';
        ui.toolTaperTip.disabled = taper ? undefined : 'true';
        $('tool-view').innerHTML = '<svg id="tool-svg" width="100%" height="100%"></svg>';
        setTimeout(() => {
            let svg = $('tool-svg');
            let pad = 10;
            let dim = { w: svg.clientWidth, h: svg.clientHeight }
            let max = { w: dim.w - pad * 2, h: dim.h - pad * 2};
            let off = { x: pad, y: pad };
            let shaft_fill = "#cccccc";
            let flute_fill = "#dddddd";
            let stroke = "#777777";
            let stroke_width = 3;
            let stroke_thin = stroke_width / 2;
            let shaft = tool.shaft_len || 1;
            let flute = tool.flute_len || 1;
            let tip_len = type === "ballmill" ? tool.flute_diam / 2 : 0;
            let total_len = shaft + flute + tip_len;
            let units = dim.h / total_len;
            let shaft_len = (shaft / total_len) * max.h;
            let flute_len = (flute / total_len) * max.h;
            let total_wid = Math.max(tool.flute_diam, tool.shaft_diam);
            let shaft_off = (max.w - tool.shaft_diam * units) / 2;
            let flute_off = (max.w - tool.flute_diam * units) / 2;
            let taper_off = (max.w - (tool.taper_tip || 0) * units) / 2;
            let parts = [
                { rect: {
                    x:off.x + shaft_off, y:off.y,
                    width:max.w - shaft_off * 2, height:shaft_len,
                    stroke, fill: shaft_fill, stroke_width
                } }
            ];
            if (type === "tapermill") {
                let yoff = off.y + shaft_len;
                let mid = dim.w / 2;
                parts.push({path: {stroke_width, stroke, fill:flute_fill, d:[
                    `M ${off.x + flute_off} ${yoff}`,
                    `L ${off.x + taper_off} ${yoff + flute_len}`,
                    `L ${dim.w - off.x - taper_off} ${yoff + flute_len}`,
                    `L ${dim.w - off.x - flute_off} ${yoff}`,
                    `z`
                ].join('\n')}});
            } else {
                let x1 = off.x + flute_off;
                let y1 = off.y + shaft_len;
                let x2 = x1 + max.w - flute_off * 2;
                let y2 = y1 + flute_len;
                parts.push({ rect: {
                    x:off.x + flute_off, y:off.y + shaft_len,
                    width:max.w - flute_off * 2, height:flute_len,
                    stroke, fill: flute_fill, stroke_width
                } });
                parts.push({ line: { x1, y1, x2, y2, stroke, stroke_width: stroke_thin } });
                parts.push({ line: {
                    x1: (x1 + x2) / 2, y1, x2, y2: (y1 + y2) / 2,
                    stroke, stroke_width: stroke_thin
                } });
                parts.push({ line: {
                    x1, y1: (y1 + y2) / 2, x2: (x1 + x2) / 2, y2,
                    stroke, stroke_width: stroke_thin
                } });
            }
            if (type === "ballmill") {
                let rad = (max.w - flute_off * 2) / 2;
                let xend = dim.w - off.x - flute_off;
                let yoff = off.y + shaft_len + flute_len + stroke_width/2;
                parts.push({path: {stroke_width, stroke, fill:flute_fill, d:[
                    `M ${off.x + flute_off} ${yoff}`,
                    `A ${rad} ${rad} 0 0 0 ${xend} ${yoff}`,
                    // `L ${off.x + flute_off} ${yoff}`
                ].join('\n')}})
            }
            svg.innerHTML = otag(parts);
        }, 10);
    }

    function updateTool(ev) {
        selectedTool.name = ui.toolName.value;
        selectedTool.number = parseInt(ui.toolNum.value);
        selectedTool.flute_diam = parseFloat(ui.toolFluteDiam.value);
        selectedTool.flute_len = parseFloat(ui.toolFluteLen.value);
        selectedTool.shaft_diam = parseFloat(ui.toolShaftDiam.value);
        selectedTool.shaft_len = parseFloat(ui.toolShaftLen.value);
        selectedTool.taper_tip = parseFloat(ui.toolTaperTip.value);
        selectedTool.metric = ui.toolMetric.checked;
        selectedTool.type = ['endmill','ballmill','tapermill'][ui.toolType.selectedIndex];
        if (selectedTool.type === 'tapermill') {
            const CAM = kiri.driver.CAM;
            const rad = (selectedTool.flute_diam - selectedTool.taper_tip) / 2;
            if (ev && ev.target === ui.toolTaperAngle) {
                const angle = parseFloat(ev.target.value);
                const len = CAM.calcTaperLength(rad, angle * DEG2RAD);
                selectedTool.flute_len = len;
                ui.toolTaperAngle.value = angle.round(1);
                ui.toolFluteLen.value = selectedTool.flute_len.round(4);
            } else {
                ui.toolTaperAngle.value = CAM.calcTaperAngle(rad, selectedTool.flute_len).round(1);
            }
        } else {
            ui.toolTaperAngle.value = 0;
        }
        renderTools();
        ui.toolSelect.selectedIndex = selectedTool.order;
        setToolChanged(true);
        renderTool(selectedTool);
    }

    function setToolChanged(changed) {
        editTools.changed = changed;
        ui.toolsSave.disabled = !changed;
    }

    function showTools() {
        if (api.mode.get_id() !== MODES.CAM) return;
        sync_get().then(_showTools);
    }

    function _showTools() {
        let selectedIndex = null;

        editTools = settings().tools.slice().sort((a,b) => {
            return a.name > b.name ? 1 : -1;
        });

        setToolChanged(false);

        ui.toolsClose.onclick = function() {
            if (editTools.changed && !confirm("abandon changes?")) return;
            api.dialog.hide();
        };
        ui.toolAdd.onclick = function() {
            editTools.push({
                id: Date.now(),
                number: maxTool + 1,
                name: "new",
                type: "endmill",
                shaft_diam: 0.25,
                shaft_len: 1,
                flute_diam: 0.25,
                flute_len: 2,
                // taper_angle: 70,
                taper_tip: 0,
                metric: false
            });
            setToolChanged(true);
            renderTools();
            ui.toolSelect.selectedIndex = editTools.length-1;
            selectTool(editTools[editTools.length-1]);
        };
        ui.toolDelete.onclick = function() {
            editTools.remove(selectedTool);
            setToolChanged(true);
            renderTools();
        };
        ui.toolsSave.onclick = function() {
            if (selectedTool) updateTool();
            settings().tools = editTools.sort((a,b) => {
                return a.name < b.name ? -1 : 1;
            });
            setToolChanged(false);
            api.conf.save();
            api.conf.update_fields();
            api.event.settings();
            sync_put();
        };
        ui.toolsExport.onclick = () => {
            uc.prompt("Export Tools Filename", "tools").then(name => {
                if (!name) {
                    return;
                }
                const record = {
                    version: kiri.version,
                    tools: api.conf.get().tools,
                    time: Date.now()
                };
                api.util.download(api.util.b64enc(record), `${name}.km`);
            });
        };

        renderTools();
        if (editTools.length > 0) {
            selectTool(editTools[0]);
            ui.toolSelect.selectedIndex = 0;
        } else {
            ui.toolAdd.onclick();
        }

        api.dialog.show('tools');
        ui.toolSelect.focus();
    }

    // not the best way to do this, but main decl of api.show is broken
    api.show.tools = showTools;

    function getModeDevices() {
        // devices are injected into self scope by
        // app.js generateDevices()
        return Object.keys(devices[api.mode.get_lower()]).sort();
    }

    function updateDeviceList() {
        renderDevices(getModeDevices());
    }

    async function sync_get() {
        await api.settings.sync.get();
    }

    async function sync_put() {
        await api.settings.sync.put();
    }

    function showDevices() {
        sync_get().then(_showDevices);
    }

    function _showDevices() {
        updateDeviceList();
        api.modal.show('setup');
    }

    function dragOverHandler(evt) {
        evt.stopPropagation();
        evt.preventDefault();

        // prevent drop actions when a dialog is open
        if (api.modal.visible()) {
            return;
        }

        evt.dataTransfer.dropEffect = 'copy';
        let oldcolor = space.platform.setColor(0x00ff00);
        if (oldcolor !== 0x00ff00) platformColor = oldcolor;
    }

    function dragLeave() {
        space.platform.setColor(platformColor);
    }

    function dropHandler(evt) {
        evt.stopPropagation();
        evt.preventDefault();

        // prevent drop actions when a dialog is open
        if (api.modal.visible()) {
            return;
        }

        space.platform.setColor(platformColor);

        let files = evt.dataTransfer.files;

        switch (api.feature.drop_group) {
            case true:
                return api.platform.load_files(files, []);
            case false:
                return api.platform.load_files(files, undefined);
        }

        if (files.length === 1) {
            api.platform.load_files(files);
        } else {
            uc.confirm(`group ${files.length} files?`).then(yes => {
                api.platform.load_files(files, yes ? [] : undefined);
            });
        }
    }

    function loadCatalogFile(e) {
        api.widgets.load(e.target.getAttribute('load'), function(widget) {
            platform.add(widget);
            api.dialog.hide();
        });
    }

    function updateCatalog(files) {
        let table = ui.catalogList,
            list = [];
        table.innerHTML = '';
        for (let name in files) {
            list.push({n:name, ln:name.toLowerCase(), v:files[name].vertices, t:files[name].updated});
        }
        list.sort(function(a,b) {
            return a.ln < b.ln ? -1 : 1;
        });
        for (let i=0; i<list.length; i++) {
            let row = DOC.createElement('div'),
                renm = DOC.createElement('button'),
                load = DOC.createElement('button'),
                size = DOC.createElement('button'),
                del = DOC.createElement('button'),
                file = list[i],
                name = file.n,
                date = new Date(file.t),
                split = name.split('.'),
                short = split[0],
                ext = split[1] ? `.${split[1]}` : '';

            renm.setAttribute('class', 'rename');
            renm.setAttribute('title', 'rename file');
            renm.innerHTML = '<i class="far fa-edit"></i>';
            renm.onclick = () => {
                let newname = prompt(`rename file`, short);
                if (newname && newname !== short) {
                    catalog.rename(name, `${newname}${ext}`, then => {
                        catalog.refresh();
                    });
                }
            };

            load.setAttribute('load', name);
            load.setAttribute('title', `file: ${name}\nvertices: ${file.v}\ndate: ${date}`);
            load.onclick = loadCatalogFile;
            load.appendChild(DOC.createTextNode(short));

            del.setAttribute('del', name);
            del.setAttribute('title', "remove '"+name+"'");
            del.onclick = () => { catalog.deleteFile(name) };
            del.innerHTML = '<i class="far fa-trash-alt"></i>';

            size.setAttribute("disabled", true);
            size.setAttribute("class", "label");
            size.appendChild(DOC.createTextNode(base.util.comma(file.v)));

            row.setAttribute("class", "f-row a-center");
            row.appendChild(renm);
            row.appendChild(load);
            row.appendChild(size);
            row.appendChild(del);
            table.appendChild(row);
        }
    }

    function isMultiHead() {
        let dev = api.conf.get().device;
        return isNotBelt() && dev.extruders && dev.extruders.length > 1;
    }

    function isBelt() {
        return ui.deviceBelt.checked;
    }

    function isNotBelt() {
        return !isBelt();
    }

    // MAIN INITIALIZATION FUNCTION
    function init_one() {
        let { event, conf, view, show } = api;
        let { bound, toInt, toFloat } = uc;
        let { newBlank, newButton, newBoolean, newGroup, newInput } = uc;
        let { newSelect, newText, newRow, newGCode, newDiv } = uc;

        event.emit('init.one');

        // ensure we have settings from last session
        conf.restore();

        let container = $('container'),
            welcome = $('welcome'),
            gcode = $('dev-gcode'),
            tracker = $('tracker'),
            controller = settings().controller;

        WIN.addEventListener("resize", () => {
            event.emit('resize');
        });

        event.on('resize', () => {
            if (WIN.innerHeight < 800) {
                ui.modalBox.classList.add('mh85');
            } else {
                ui.modalBox.classList.remove('mh85');
            }
            view.update_slider();
        });

        space.sky.showGrid(false);
        space.sky.setColor(controller.dark ? 0 : 0xffffff);
        space.setAntiAlias(controller.antiAlias);
        space.init(container, function (delta) {
            let vars = api.var;
            if (vars.layer_max === 0 || !delta) return;
            if (controller.reverseZoom) delta = -delta;
            let same = vars.layer_hi === vars.layer_lo;
            let track = vars.layer_lo > 0;
            if (delta > 0) {
                vars.layer_hi = Math.max(same ? 0 : vars.layer_lo, vars.layer_hi - 1);
                if (track) {
                    vars.layer_lo = Math.max(0, vars.layer_lo - 1);
                }
            } else if (delta < 0) {
                vars.layer_hi = Math.min(vars.layer_max, vars.layer_hi + 1);
                if (track) {
                    vars.layer_lo = Math.min(vars.layer_hi, vars.layer_lo + 1);
                }
            }
            if (same) {
                vars.layer_lo = vars.layer_hi;
            }
            view.update_slider();
            show.slices();
        }, controller.ortho);
        space.platform.onMove(conf.save);
        space.platform.setRound(true);
        space.useDefaultKeys(api.feature.on_key === undefined || api.feature.on_key_defaults);
        updateDrawer();

        // api augmentation with local functions
        api.device.export = deviceExport;

        Object.assign(ui, {
            tracker:            tracker,
            container:          container,

            alert: {
                dialog:         $('alert-area'),
                text:           $('alert-text')
            },
            func: {
                slice:          $('act-slice'),
                preview:        $('act-preview'),
                animate:        $('act-animate'),
                export:         $('act-export')
            },
            label: {
                slice:          $('label-slice'),
                preview:        $('label-preview'),
                animate:        $('label-animate'),
                export:         $('label-export'),
            },
            acct: {
                help:           $('app-help'),
                export:         $('app-export')
            },
            dev: {
                header:         $('dev-header'),
                search:         $('dev-search'),
                filter:         $('dev-filter')
            },
            mesh: {
                name:           $('mesh-name'),
                points:         $('mesh-points'),
                faces:          $('mesh-faces'),
            },

            stats: {
                fps:            $('fps'),
                rms:            $('rms'),
                div:            $('stats'),
                rnfo:           $('rnfo'),
            },

            load:               $('load-file'),
            speeds:             $('speeds'),
            speedbar:           $('speedbar'),
            context:            $('context-menu'),

            ltsetup:            $('lt-setup'),
            ltfile:             $('lt-file'),
            ltview:             $('lt-view'),
            ltact:              $('lt-start'),
            edit:               $('lt-tools'),
            nozzle:             $('menu-nozzle'),

            modal:              $('modal'),
            modalBox:           $('modal-box'),
            help:               $('mod-help'),
            setup:              $('mod-setup'),
            prefs:              $('mod-prefs'),
            files:              $('mod-files'),
            saves:              $('mod-saves'),
            tools:              $('mod-tools'),
            print:              $('mod-print'),
            local:              $('mod-local'),
            any:                $('mod-any'),

            catalogBody:        $('catalogBody'),
            catalogList:        $('catalogList'),

            devices:            $('devices'),
            deviceAdd:          $('device-add'),
            deviceDelete:       $('device-del'),
            deviceRename:       $('device-ren'),
            deviceExport:       $('device-exp'),
            deviceSave:         $('device-save'),

            toolsSave:          $('tools-save'),
            toolsClose:         $('tools-close'),
            toolsExport:        $('tools-export'),
            toolSelect:         $('tool-select'),
            toolAdd:            $('tool-add'),
            toolDelete:         $('tool-del'),
            toolType:           $('tool-type'),
            toolName:           $('tool-name'),
            toolNum:            $('tool-num'),
            toolFluteDiam:      $('tool-fdiam'),
            toolFluteLen:       $('tool-flen'),
            toolShaftDiam:      $('tool-sdiam'),
            toolShaftLen:       $('tool-slen'),
            toolTaperAngle:     $('tool-tangle'),
            toolTaperTip:       $('tool-ttip'),
            toolMetric:         $('tool-metric'),

            setMenu:            $('set-menu'),
            settings:           $('settings'),
            settingsBody:       $('settingsBody'),
            settingsList:       $('settingsList'),

            slider:             $('slider'),
            sliderMax:          $('slider-max'),
            sliderMin:          $('slider-zero'),
            sliderLo:           $('slider-lo'),
            sliderMid:          $('slider-mid'),
            sliderHi:           $('slider-hi'),
            sliderHold:         $('slider-hold'),
            sliderRange:        $('slider-center'),

            loading:            $('progress').style,
            progress:           $('progbar').style,
            prostatus:          $('progtxt'),

            selection:          $('selection'),
            sizeX:              $('size_x'),
            sizeY:              $('size_y'),
            sizeZ:              $('size_z'),
            scaleX:             $('scale_x'),
            scaleY:             $('scale_y'),
            scaleZ:             $('scale_z'),
            lockX:              $('lock_x'),
            lockY:              $('lock_y'),
            lockZ:              $('lock_z'),
            stock:              $('stock'),
            stockWidth:         $('stock-width'),
            stockDepth:         $('stock-width'),
            stockHeight:        $('stock-width'),

            /** Device Browser / Editor */

            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true }),
            device:           newGroup(LANG.dv_gr_dev, null, {group:"ddev", inline:true, class:"noshow"}),

            _____:            newGroup("workspace", null, {group:"dext", inline:true}),
            bedWidth:         newInput('X (width)', {title:LANG.dv_bedw_l, convert:toFloat, size:6, units:true, round:2, action:updateDeviceSize}),
            bedDepth:         newInput('Y (depth)', {title:LANG.dv_bedw_l, convert:toFloat, size:6, units:true, round:2, action:updateDeviceSize}),
            maxHeight:        newInput('Z (height)', {title:LANG.dv_bedw_l, convert:toFloat, size:6, units:true, round:2, action:updateDeviceSize}),
            resolutionX:      newInput(LANG.dv_rezx_s, {title:LANG.dv_rezx_l, convert:toInt, size:6, modes:SLA}),
            resolutionY:      newInput(LANG.dv_rezy_s, {title:LANG.dv_rezy_l, convert:toInt, size:6, modes:SLA}),
            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true, modes:GCODE }),
            _____:            newGroup("firmware", null, {group:"dext", inline:true}),
            fwRetract:        newBoolean(LANG.dv_retr_s, onBooleanClick, {title:LANG.dv_retr_l, modes:FDM}),
            deviceOrigin:     newBoolean(LANG.dv_orgc_s, onBooleanClick, {title:LANG.dv_orgc_l, modes:FDM_LZR, show:() => !ui.deviceRound.checked}),
            deviceRound:      newBoolean(LANG.dv_bedc_s, onBooleanClick, {title:LANG.dv_bedc_l, modes:FDM, trigger:true, show:isNotBelt}),
            deviceBelt:       newBoolean(LANG.dv_belt_s, onBooleanClick, {title:LANG.dv_belt_l, modes:FDM, trigger:true, show:() => !ui.deviceRound.checked}),
            separator:        newBlank({class:"pop-sep", modes:FDM, driven:true}),
            spindleMax:       newInput(LANG.dv_spmx_s, {title:LANG.dv_spmx_l, convert:toInt, size:5, modes:CAM, trigger:1}),
            deviceZMax:       newInput(LANG.dv_zmax_s, {title:LANG.dv_zmax_l, convert:toInt, size:5, modes:FDM}),
            gcodeTime:        newInput(LANG.dv_time_s, {title:LANG.dv_time_l, convert:toFloat, size:5, modes:FDM}),
            filamentSource:   newSelect(LANG.dv_fsrc_s, {title: LANG.dv_fsrc_l, action: filamentSourceSave, modes:FDM, show:() => false}, "filasrc"),
            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true, modes:FDM }),
            extruder:         newGroup(LANG.dv_gr_ext, null, {group:"dext", inline:true}),
            extFilament:      newInput(LANG.dv_fila_s, {title:LANG.dv_fila_l, convert:toFloat, modes:FDM}),
            extNozzle:        newInput(LANG.dv_nozl_s, {title:LANG.dv_nozl_l, convert:toFloat, modes:FDM}),
            extOffsetX:       newInput(LANG.dv_exox_s, {title:LANG.dv_exox_l, convert:toFloat, modes:FDM}),
            extOffsetY:       newInput(LANG.dv_exoy_s, {title:LANG.dv_exoy_l, convert:toFloat, modes:FDM}),
            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true, modes:FDM_CAM }),
            _____:            newGroup(LANG.dv_gr_too, null, {group:"dext", inline:true}),
            extSelect:        newText(LANG.dv_exts_s, {title:LANG.dv_exts_l, size:14, height:3, area:gcode}),
            extDeselect:      newText(LANG.dv_dext_s, {title:LANG.dv_dext_l, size:14, height:3, area:gcode}),
            extPad:           newBlank({class:"grow", modes:FDM}),
            extActions:       newRow([
                ui.extPrev = newButton(undefined, undefined, {icon:'<i class="fas fa-less-than"></i>'}),
                ui.extAdd  = newButton(undefined, undefined, {icon:'<i class="fas fa-plus"></i>'}),
                ui.extDel  = newButton(undefined, undefined, {icon:'<i class="fas fa-minus"></i>'}),
                ui.extNext = newButton(undefined, undefined, {icon:'<i class="fas fa-greater-than"></i>'})
            ], {class:"dev-buttons ext-buttons", modes:FDM}),
            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true, modes:FDM, show: () => false && ui.filamentSource.selectedOptions[0].value === 'palette3' }),
            palette:          newGroup(LANG.dv_gr_pal, null, {group:"dext2", inline:true, modes:FDM}),
            paletteId:        newInput(LANG.dv_paid_s, {title:LANG.dv_paid_l, modes:FDM, size:15, text:true}),
            palettePing:      newInput(LANG.dv_paps_s, {title:LANG.dv_paps_l, modes:FDM, convert:toInt}),
            paletteFeed:      newInput(LANG.dv_pafe_s, {title:LANG.dv_pafe_l, modes:FDM, convert:toInt}),
            palettePush:      newInput(LANG.dv_papl_s, {title:LANG.dv_papl_l, modes:FDM, convert:toInt}),
            paletteOffset:    newInput(LANG.dv_paof_s, {title:LANG.dv_paof_l, modes:FDM, convert:toInt}),
            paletteSep:       newBlank({class:"pop-sep", modes:FDM}),
            paletteHeat:      newInput(LANG.dv_pahe_s, {title:LANG.dv_pahe_l, modes:FDM, convert:toInt}),
            paletteCool:      newInput(LANG.dv_paco_s, {title:LANG.dv_paco_l, modes:FDM, convert:toInt}),
            palettePress:     newInput(LANG.dv_pacm_s, {title:LANG.dv_pacm_l, modes:FDM, convert:toInt}),
            _____:            newDiv({ class: "f-col t-body t-inset", addto: $('dev-config'), set:true, modes:CAM_LZR }),
            _____:            newGroup(LANG.dv_gr_out, null, {group:"dgco", inline:true}),
            gcodeStrip:       newBoolean(LANG.dv_strc_s, onBooleanClick, {title:LANG.dv_strc_l, modes:CAM}),
            gcodeSpace:       newBoolean(LANG.dv_tksp_s, onBooleanClick, {title:LANG.dv_tksp_l, modes:CAM_LZR}),
            useLaser:         newBoolean(LANG.dv_lazr_s, onBooleanClick, {title:LANG.dv_lazr_l, modes:CAM}),
            gcodeFExt:        newInput(LANG.dv_fext_s, {title:LANG.dv_fext_l, modes:CAM_LZR, size:7, text:true}),
            gcodeEd:          newGroup(LANG.dv_gr_gco, $('dg'), {group:"dgcp", inline:true, modes:GCODE}),
            gcodeMacros:      newRow([
                (ui.gcodePre      = newGCode(LANG.dv_head_s, {title:LANG.dv_head_l, modes:GCODE, area:gcode})).button,
                (ui.gcodePost     = newGCode(LANG.dv_foot_s, {title:LANG.dv_foot_l, modes:GCODE, area:gcode})).button,
                (ui.gcodeLayer    = newGCode(LANG.dv_layr_s, {title:LANG.dv_layr_l, modes:FDM,   area:gcode})).button,
                (ui.gcodeTrack    = newGCode(LANG.dv_prog_s, {title:LANG.dv_prog_l, modes:FDM,   area:gcode})).button,
                (ui.gcodeFan      = newGCode(LANG.dv_fanp_s, {title:LANG.dv_fanp_l, modes:FDM,   area:gcode})).button,
                (ui.gcodeFeature  = newGCode(LANG.dv_feat_s, {title:LANG.dv_feat_l, modes:FDM,   area:gcode})).button,
                (ui.gcodeLaserOn  = newGCode(LANG.dv_lzon_s, {title:LANG.dv_lzon_l, modes:LASER, area:gcode})).button,
                (ui.gcodeLaserOff = newGCode(LANG.dv_lzof_s, {title:LANG.dv_lzof_l, modes:LASER, area:gcode})).button,
                (ui.gcodeChange   = newGCode(LANG.dv_tool_s, {title:LANG.dv_tool_l, modes:CAM,   area:gcode})).button,
                (ui.gcodeDwell    = newGCode(LANG.dv_dwll_s, {title:LANG.dv_dwll_l, modes:CAM,   area:gcode})).button,
                (ui.gcodeSpindle  = newGCode(LANG.dv_sspd_s, {title:LANG.dv_sspd_l, modes:CAM,   area:gcode, show:() => ui.spindleMax.value > 0})).button
            ], {class:"ext-buttons f-row gcode-macros"}),

            /** Preferences Menu */

            _____:            newGroup(LANG.op_menu, $('prefs-gen1'), {inline: true}),
            antiAlias:        newBoolean(LANG.op_anta_s, booleanSave, {title:LANG.op_anta_l}),
            reverseZoom:      newBoolean(LANG.op_invr_s, booleanSave, {title:LANG.op_invr_l}),
            ortho:            newBoolean(LANG.op_orth_s, booleanSave, {title:LANG.op_orth_l}),
            dark:             newBoolean(LANG.op_dark_s, booleanSave, {title:LANG.op_dark_l}),
            drawer:           newBoolean('slide out', booleanSave, {title:'slide out settings drawer'}),
            scrolls:          newBoolean('scrollbars', booleanSave, {title:'show scrollbars'}),
            devel:            newBoolean(LANG.op_devl_s, booleanSave, {title:LANG.op_devl_l}),
            _____:            newGroup(LANG.op_disp, $('prefs-gen2'), {inline: true}),
            showOrigin:       newBoolean(LANG.op_shor_s, booleanSave, {title:LANG.op_shor_l}),
            showRulers:       newBoolean(LANG.op_shru_s, booleanSave, {title:LANG.op_shru_l}),
            showSpeeds:       newBoolean(LANG.op_sped_s, speedSave, {title:LANG.op_sped_l}),
            decals:           newBoolean(LANG.op_decl_s, booleanSave, {title:LANG.op_decl_s}),
            shiny:            newBoolean(LANG.op_shny_s, booleanSave, {title:LANG.op_shny_l, modes:FDM}),
            lineType:         newSelect(LANG.op_line_s, {title: LANG.op_line_l, action: lineTypeSave, modes:FDM}, "linetype"),
            animesh:          newSelect(LANG.op_anim_s, {title: LANG.op_anim_l, action: aniMeshSave, modes:CAM}, "animesh"),
            units:            newSelect(LANG.op_unit_s, {title: LANG.op_unit_l, action: unitsSave, modes:CAM}, "units"),
            _____:            newGroup(LANG.lo_menu, $('prefs-lay'), {inline: true}),
            autoSave:         newBoolean(LANG.op_save_s, booleanSave, {title:LANG.op_save_l}),
            autoLayout:       newBoolean(LANG.op_auto_s, booleanSave, {title:LANG.op_auto_l}),
            freeLayout:       newBoolean(LANG.op_free_s, booleanSave, {title:LANG.op_free_l}),
            spaceRandoX:      newBoolean(LANG.op_spcx_s, booleanSave, {title:LANG.op_spcx_l, show:isBelt}),
            spaceLayout:      newInput(LANG.op_spcr_s, {title:LANG.op_spcr_l, convert:toFloat, size:3, units:true}),
            _____:            newGroup(LANG.xp_menu, $('prefs-xpo'), {inline: true}),
            exportLocal:      newBoolean(`Grid:Local`, booleanSave, {title:LANG.op_exgl_l}),
            exportGhost:      newBoolean(`Grid:Host`, booleanSave, {title:LANG.op_exgh_l}),
            exportOcto:       newBoolean(`OctoPrint`, booleanSave, {title:LANG.op_exop_l}),
            exportThumb:      newBoolean(`Thumbnail`, booleanSave, {modes:FDM}),
            exportPreview:    newBoolean(`Code Preview`, booleanSave),
            _____:            newGroup(LANG.pt_menu, $('prefs-prt'), {inline: true}),
            detail:           newSelect(LANG.pt_qual_s, {title: LANG.pt_qual_l, action: detailSave}, "detail"),
            healMesh:         newBoolean(LANG.pt_heal_s, booleanSave, {title: LANG.pt_heal_l}),
            threaded:         newBoolean(LANG.pt_thrd_s, booleanSave, {title: LANG.pt_thrd_l, modes:THREED}),
            assembly:         newBoolean(LANG.pt_assy_s, booleanSave, {title: LANG.pt_assy_l, modes:THREED}),

            prefadd:          uc.checkpoint($('prefs-add')),

            /** FDM Settings */

            _____:               newGroup(LANG.sl_menu, $('fdm-layers'), { modes:FDM, driven, separator }),
            sliceHeight:         newInput(LANG.sl_lahi_s, { title:LANG.sl_lahi_l, convert:toFloat }),
            sliceMinHeight:      newInput(LANG.ad_minl_s, { title:LANG.ad_minl_l, convert:toFloat, bound:bound(0,3.0), show:() => ui.sliceAdaptive.checked }),
            sliceTopLayers:      newInput(LANG.sl_ltop_s, { title:LANG.sl_ltop_l, convert:toInt }),
            sliceBottomLayers:   newInput(LANG.sl_lbot_s, { title:LANG.sl_lbot_l, convert:toInt }),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceAdaptive:       newBoolean(LANG.ad_adap_s, onBooleanClick, { title: LANG.ad_adap_l }),
            _____:               newGroup(LANG.sw_menu, $('fdm-walls'), { modes:FDM, driven, separator }),
            sliceShells:         newInput(LANG.sl_shel_s, { title:LANG.sl_shel_l, convert:toFloat }),
            sliceLineWidth:      newInput(LANG.sl_line_s, { title:LANG.sl_line_l, convert:toFloat, bound:bound(0,5) }),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceShellOrder:     newSelect(LANG.sl_ordr_s, { title:LANG.sl_ordr_l}, "shell"),
            sliceDetectThin:     newSelect(LANG.ad_thin_s, { title: LANG.ad_thin_l, action: thinWallSave }, "thin"),
            outputAlternating:   newBoolean(LANG.ad_altr_s, onBooleanClick, {title:LANG.ad_altr_l}),
            _____:               newGroup(LANG.fi_menu, $('fdm-fill'), { modes:FDM, driven, separator }),
            sliceFillType:       newSelect(LANG.fi_type, {trigger:true}, "infill"),
            sliceFillSparse:     newInput(LANG.fi_pcnt_s, {title:LANG.fi_pcnt_l, convert:toFloat, bound:bound(0.0,1.0)}),
            sliceFillRepeat:     newInput(LANG.fi_rept_s, {title:LANG.fi_rept_l, convert:toInt,   bound:bound(1,10), show: fillShow}),
            sliceFillOverlap:    newInput(LANG.fi_over_s, {title:LANG.fi_over_l, convert:toFloat, bound:bound(0.0,2.0)}),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceFillRate:       newInput(LANG.ou_feed_s, {title:LANG.ou_feed_l, convert:toInt,   bound:bound(0,500)}),
            sliceSolidRate:      newInput(LANG.ou_fini_s, {title:LANG.ou_fini_l, convert:toInt,   bound:bound(0,500)}),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceFillGrow:       newInput(LANG.fi_grow_s, {title:LANG.fi_grow_l, convert:toFloat}),
            sliceFillAngle:      newInput(LANG.fi_angl_s, {title:LANG.fi_angl_l, convert:toFloat}),
            _____:               newGroup(LANG.fh_menu, $('fdm-heat'), { modes:FDM, driven, separator }),
            outputTemp:          newInput(LANG.ou_nozl_s, {title:LANG.ou_nozl_l, convert:toInt}),
            outputBedTemp:       newInput(LANG.ou_bedd_s, {title:LANG.ou_bedd_l, convert:toInt}),
            _____:               newGroup(LANG.fc_menu, $('fdm-cool'), { modes:FDM, driven, separator }),
            outputFanLayer:      newInput(LANG.ou_fanl_s, { title:LANG.ou_fanl_l, convert:toInt,   bound:bound(0,255) }),
            outputFanSpeed:      newInput(LANG.ou_fans_s, {title:LANG.ou_fans_l, convert:toInt, bound:bound(0,255)}),
            _____:               newGroup(LANG.sp_menu, $('fdm-support'), { modes:FDM, marker:false, driven, separator }),
            sliceSupportNozzle:  newSelect(LANG.sp_nozl_s, {title:LANG.sp_nozl_l, show:isMultiHead}, "extruders"),
            sliceSupportDensity: newInput(LANG.sp_dens_s, {title:LANG.sp_dens_l, convert:toFloat, bound:bound(0.0,1.0)}),
            sliceSupportSize:    newInput(LANG.sp_size_s, {title:LANG.sp_size_l, convert:toFloat, bound:bound(1.0,200.0)}),
            sliceSupportOffset:  newInput(LANG.sp_offs_s, {title:LANG.sp_offs_l, convert:toFloat, bound:bound(0.0,200.0)}),
            sliceSupportGap:     newInput(LANG.sp_gaps_s, {title:LANG.sp_gaps_l, convert:toInt,   bound:bound(0,5)}),
            sliceSupportArea:    newInput(LANG.sp_area_s, {title:LANG.sp_area_l, convert:toFloat, bound:bound(0.0,200.0)}),
            sliceSupportExtra:   newInput(LANG.sp_xpnd_s, {title:LANG.sp_xpnd_l, convert:toFloat, bound:bound(0.0,10.0)}),
            sliceSupportGrow:    newInput(LANG.sp_grow_s, {title:LANG.sp_grow_l, convert:toFloat, bound:bound(0.0,10.0)}),
            sliceSupportAngle:   newInput(LANG.sp_angl_s, {title:LANG.sp_angl_l, convert:toFloat, bound:bound(0.0,90.0)}),
            sliceSupportSpan:    newInput(LANG.sp_span_s, {title:LANG.sp_span_l, convert:toFloat, bound:bound(0.0,200.0), show:() => ui.sliceSupportEnable.checked }),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceSupportEnable:  newBoolean(LANG.sp_auto_s, onBooleanClick, {title:LANG.sp_auto_l, show:isNotBelt}),
            sliceSupportOutline: newBoolean(LANG.sp_outl_s, onBooleanClick, {title:LANG.sp_outl_l}),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceSupportGen:     newRow([
                ui.ssaGen = newButton(LANG.sp_detect, onButtonClick, {class: "f-col grow a-center"})
            ], { modes: FDM, class: "ext-buttons f-row grow" }),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceSupportManual: newRow([
                (ui.ssmAdd = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-plus"></i>'})),
                (ui.ssmDun = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-check"></i>'})),
                (ui.ssmClr = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-trash-alt"></i>'}))
            ], {class:"ext-buttons f-row"}),
            _____:               newGroup(LANG.fl_menu, $('fdm-base'), { modes:FDM, driven, separator }),
            firstSliceHeight:    newInput(LANG.fl_lahi_s, {title:LANG.fl_lahi_l, convert:toFloat, show:isNotBelt}),
            firstLayerNozzleTemp:newInput(LANG.fl_nozl_s, {title:LANG.fl_nozl_l, convert:toInt,   show:isNotBelt}),
            firstLayerBedTemp:   newInput(LANG.fl_bedd_s, {title:LANG.fl_bedd_l, convert:toInt,   show:isNotBelt}),
            separator:           newBlank({ class:"set-sep", driven }),
            firstLayerFanSpeed:  newInput(LANG.ou_fans_s, {title:LANG.ou_fans_l, convert:toInt,   bound:bound(0,255), show:isBelt}),
            firstLayerYOffset:   newInput(LANG.fl_zoff_s, {title:LANG.fl_zoff_l, convert:toFloat, show:isBelt}),
            firstLayerFlatten:   newInput(LANG.fl_flat_s, {title:LANG.fl_flat_l, convert:toFloat, show:isBelt}),
            firstLayerRate:      newInput(LANG.fl_rate_s, {title:LANG.fl_rate_l, convert:toFloat}),
            firstLayerFillRate:  newInput(LANG.fl_frat_s, {title:LANG.fl_frat_l, convert:toFloat, show:isNotBelt}),
            separator:           newBlank({ class:"set-sep", driven }),
            firstLayerLineMult:  newInput(LANG.fl_sfac_s, {title:LANG.fl_sfac_l, convert:toFloat, bound:bound(0.5,2), show:isNotBelt}),
            firstLayerPrintMult: newInput(LANG.fl_mult_s, {title:LANG.fl_mult_l, convert:toFloat}),
            firstLayerBrim:      newInput(LANG.fl_brim_s, {title:LANG.fl_brim_l, convert:toInt,   show:isBelt}),
            firstLayerBrimIn:    newInput(LANG.fl_brin_s, {title:LANG.fl_brin_l, convert:toInt,   show:isBelt}),
            firstLayerBrimTrig:  newInput(LANG.fl_brmn_s, {title:LANG.fl_brmn_l, convert:toInt,   show:isBelt}),
            firstLayerBrimGap:   newInput(LANG.fl_brgp_s, {title:LANG.fl_brgp_l, convert:toFloat, show:isBelt}),
            firstLayerBeltLead:  newInput(LANG.fl_bled_s, {title:LANG.fl_bled_l, convert:toFloat, show:isBelt}),
            firstLayerBeltBump:  newInput(LANG.fl_blmp_s, {title:LANG.fl_blmp_l, convert:toFloat, bound:bound(0, 10), show:isBelt}),
            separator:           newBlank({ class:"set-sep", driven }),
            outputBrimCount:     newInput(LANG.fl_skrt_s, {title:LANG.fl_skrt_l, convert:toInt,   show:isNotBelt}),
            outputBrimOffset:    newInput(LANG.fl_skro_s, {title:LANG.fl_skro_l, convert:toFloat, show:isNotBelt}),
            outputRaftSpacing:   newInput(LANG.fr_spac_s, {title:LANG.fr_spac_l, convert:toFloat, bound:bound(0.0,3.0), show: () => ui.outputRaft.checked && isNotBelt() }),
            separator:           newBlank({ class:"set-sep", driven }),
            outputRaft:          newBoolean(LANG.fr_nabl_s, onBooleanClick, {title:LANG.fr_nabl_l, trigger: true, show:() => isNotBelt()}),
            outputDraftShield:   newBoolean(LANG.fr_draf_s, onBooleanClick, {title:LANG.fr_draf_l, trigger: true, show:() => isNotBelt()}),
            _____:               newGroup(LANG.ou_menu, $('fdm-output'), { modes:FDM, driven, separator }),
            outputFeedrate:      newInput(LANG.ou_feed_s, {title:LANG.ou_feed_l, convert:toInt}),
            outputFinishrate:    newInput(LANG.ou_fini_s, {title:LANG.ou_fini_l, convert:toInt}),
            outputSeekrate:      newInput(LANG.ou_move_s, {title:LANG.ou_move_l, convert:toInt}),
            separator:           newBlank({ class:"set-sep", driven }),
            outputShellMult:     newInput(LANG.ou_shml_s, {title:LANG.ou_exml_l, convert:toFloat, bound:bound(0.0,2.0)}),
            outputFillMult:      newInput(LANG.ou_flml_s, {title:LANG.ou_exml_l, convert:toFloat, bound:bound(0.0,2.0)}),
            outputSparseMult:    newInput(LANG.ou_spml_s, {title:LANG.ou_exml_l, convert:toFloat, bound:bound(0.0,2.0)}),
            separator:           newBlank({ class:"set-sep", driven }),
            outputRetractDist:   newInput(LANG.ad_rdst_s, {title:LANG.ad_rdst_l, convert:toFloat}),
            outputRetractSpeed:  newInput(LANG.ad_rrat_s, {title:LANG.ad_rrat_l, convert:toInt}),
            outputRetractWipe:   newInput(LANG.ad_wpln_s, {title:LANG.ad_wpln_l, convert:toFloat, bound:bound(0.0,10)}),
            separator:           newBlank({ class:"set-sep", driven }),
            sliceLayerStart:     newSelect(LANG.sl_strt_s, {title:LANG.sl_strt_l}, "start"),
            outputLayerRetract:  newBoolean(LANG.ad_lret_s, onBooleanClick, {title:LANG.ad_lret_l}),
            outputAvoidGaps:     newBoolean(LANG.ad_agap_s, onBooleanClick, {title:LANG.ad_agap_l}),
            separator:           newBlank({ class:"set-sep", driven, show:isMultiHead }),
            outputBeltFirst:     newBoolean(LANG.ad_lbir_s, onBooleanClick, {title:LANG.ad_lbir_l, show: isBelt}),
            outputNozzle:        newSelect(LANG.sp_nozl_s, {title:LANG.sp_nozl_l, show:isMultiHead}, "extruders"),
            _____:               newGroup(LANG.ad_menu, $('fdm-expert'), { modes:FDM, driven, separator }),
            outputRetractDwell:  newInput(LANG.ad_rdwl_s, {title:LANG.ad_rdwl_l, convert:toInt}),
            sliceSolidMinArea:   newInput(LANG.ad_msol_s, {title:LANG.ad_msol_l, convert:toFloat}),
            outputMinSpeed:      newInput(LANG.ad_mins_s, {title:LANG.ad_mins_l, convert:toFloat, bound:bound(1,200)}),
            outputShortPoly:     newInput(LANG.ad_spol_s, {title:LANG.ad_spol_l, convert:toFloat, bound:bound(0,10000)}),
            outputCoastDist:     newInput(LANG.ad_scst_s, {title:LANG.ad_scst_l, convert:toFloat, bound:bound(0.0,10)}),
            zHopDistance:        newInput(LANG.ad_zhop_s, {title:LANG.ad_zhop_l, convert:toFloat, bound:bound(0,3.0)}),
            arcTolerance:        newInput(LANG.ad_arct_s, {title:LANG.ad_arct_l, convert:toFloat, bound:bound(0,1.0), show:() => { return isNotBelt() }}),
            antiBacklash:        newInput(LANG.ad_abkl_s, {title:LANG.ad_abkl_l, convert:toInt,   bound:bound(0,3)}),
            outputLoops:         newInput(LANG.ag_loop_s, {title:LANG.ag_loop_l, convert:toInt,   bound:bound(-1,1000), show:isBelt}),
            outputPurgeTower:    newInput(LANG.ad_purg_s, {title:LANG.ad_purg_l, convert:toInt,   bound:bound(0,1000)}),

            fdmRanges:    $('fdm-ranges'),

            /** CAM Settings */

            camTabs:             newGroup(LANG.ct_menu, $('cam-tabs'), { modes:CAM, marker:true, driven, separator }),
            camTabsWidth:        newInput(LANG.ct_wdth_s, {title:LANG.ct_wdth_l, convert:toFloat, bound:bound(0.005,100), units:true}),
            camTabsHeight:       newInput(LANG.ct_hght_s, {title:LANG.ct_hght_l, convert:toFloat, bound:bound(0.005,100), units:true}),
            camTabsDepth:        newInput(LANG.ct_dpth_s, {title:LANG.ct_dpth_l, convert:toFloat, bound:bound(0.005,100), units:true}),
            separator:           newBlank({ class:"set-sep", driven }),
            camTabsMidline:      newBoolean(LANG.ct_midl_s, onBooleanClick, {title:LANG.ct_midl_l}),
            separator:           newBlank({ class:"set-sep", driven }),
            camTabsManual: newRow([
                (ui.tabAdd = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-plus"></i>'})),
                (ui.tabDun = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-check"></i>'})),
                (ui.tabClr = newButton(undefined, onButtonClick, {icon:'<i class="fas fa-trash-alt"></i>'}))
            ], {class:"ext-buttons f-row"}),
            camStock:            newGroup(LANG.cs_menu, $('cam-stock'), { modes:CAM, driven, separator }),
            camStockX:           newInput(LANG.cs_wdth_s, {title:LANG.cs_wdth_l, convert:toFloat, bound:bound(0,9999), units:true}),
            camStockY:           newInput(LANG.cs_dpth_s, {title:LANG.cs_dpth_l, convert:toFloat, bound:bound(0,9999), units:true}),
            camStockZ:           newInput(LANG.cs_hght_s, {title:LANG.cs_hght_l, convert:toFloat, bound:bound(0,9999), units:true}),
            separator:           newBlank({ class:"set-sep", driven }),
            camStockOffset:      newBoolean(LANG.cs_offs_s, onBooleanClick, {title:LANG.cs_offs_l}),
            camStockClipTo:      newBoolean(LANG.cs_clip_s, onBooleanClick, {title:LANG.cs_clip_l}),
            camStockIndexed:     newBoolean(LANG.cs_indx_s, onBooleanClick, {title:LANG.cs_indx_l}),
            camStockIndexGrid:   newBoolean(LANG.cs_ishg_s, onBooleanClick, {title:LANG.cs_ishg_l, show:() => ui.camStockIndexed.checked}),
            camLimits:           newGroup(LANG.cc_menu, $('cam-limits'), { modes:CAM, driven, separator }),
            camZAnchor:          newSelect(LANG.ou_zanc_s, {title: LANG.ou_zanc_l, action:zAnchorSave, show:() => !ui.camStockIndexed.checked}, "zanchor"),
            camZOffset:          newInput(LANG.ou_ztof_s, {title:LANG.ou_ztof_l, convert:toFloat, units:true}),
            camZBottom:          newInput(LANG.ou_zbot_s, {title:LANG.ou_zbot_l, convert:toFloat, units:true, trigger: true}),
            camZThru:            newInput(LANG.ou_ztru_s, {title:LANG.ou_ztru_l, convert:toFloat, bound:bound(0.0,100), units:true, show:() => { return ui.camZBottom.value == 0 }}),
            camZClearance:       newInput(LANG.ou_zclr_s, {title:LANG.ou_zclr_l, convert:toFloat, bound:bound(0.01,100), units:true}),
            camFastFeedZ:        newInput(LANG.cc_rzpd_s, {title:LANG.cc_rzpd_l, convert:toFloat, units:true}),
            camFastFeed:         newInput(LANG.cc_rapd_s, {title:LANG.cc_rapd_l, convert:toFloat, units:true}),
            camOutput:           newGroup(LANG.ou_menu, $('cam-output'), { modes:CAM, driven, separator }),
            camConventional:     newBoolean(LANG.ou_conv_s, onBooleanClick, {title:LANG.ou_conv_l}),
            camEaseDown:         newBoolean(LANG.cr_ease_s, onBooleanClick, {title:LANG.cr_ease_l}),
            camDepthFirst:       newBoolean(LANG.ou_depf_s, onBooleanClick, {title:LANG.ou_depf_l}),
            camToolInit:         newBoolean(LANG.ou_toin_s, onBooleanClick, {title:LANG.ou_toin_l}),
            camFirstZMax:        newBoolean(LANG.ou_z1st_s, onBooleanClick, {title:LANG.ou_z1st_l}),
            camForceZMax:        newBoolean(LANG.ou_forz_s, onBooleanClick, {title:LANG.ou_forz_l}),
            camOrigin:           newGroup(LANG.co_menu, $('cam-origin'), { modes:CAM, driven, separator }),
            camOriginTop:        newBoolean(LANG.or_topp_s, onBooleanClick, {title:LANG.or_topp_l}),
            camOriginCenter:     newBoolean(LANG.or_cntr_s, onBooleanClick, {title:LANG.or_cntr_l}),
            separator:           newBlank({ class:"set-sep", driven }),
            camOriginOffX:       newInput(LANG.co_offx_s, {title:LANG.co_offx_l, convert:toFloat, units:true}),
            camOriginOffY:       newInput(LANG.co_offy_s, {title:LANG.co_offy_l, convert:toFloat, units:true}),
            camOriginOffZ:       newInput(LANG.co_offz_s, {title:LANG.co_offz_l, convert:toFloat, units:true}),
            camExpert:           newGroup(LANG.op_xprt_s, $('cam-expert'), { group: "cam_expert", modes:CAM, marker: false, driven, separator }),
            camExpertFast:       newBoolean(LANG.cx_fast_s, onBooleanClick, {title:LANG.cx_fast_l, show: () => !ui.camTrueShadow.checked }),
            camTrueShadow:       newBoolean(LANG.cx_true_s, onBooleanClick, {title:LANG.cx_true_l, show: () => !ui.camExpertFast.checked }),

            /** LASER Settings */

            laserMode:           newGroup(LANG.sl_menu, $('lzr-slice'), { modes:TWOD, driven, separator }),
            laserOffset:         newInput(LANG.ls_offs_s, {title:LANG.ls_offs_l, convert:toFloat}),
            laserSliceHeight:    newInput(LANG.ls_lahi_s, {title:LANG.ls_lahi_l, convert:toFloat, trigger: true}),
            laserSliceHeightMin: newInput(LANG.ls_lahm_s, {title:LANG.ls_lahm_l, convert:toFloat, show:() => ui.laserSliceHeight.value == 0 && !ui.laserSliceSingle.checked }),
            separator:           newBlank({ class:"set-sep", driven }),
            laserSliceSingle:    newBoolean(LANG.ls_sngl_s, onBooleanClick, {title:LANG.ls_sngl_l}),
            knife:               newGroup(LANG.dk_menu, $('lzr-knife'), { modes:DRAG, marker:true, driven, separator }),
            outputKnifeDepth:    newInput(LANG.dk_dpth_s, {title:LANG.dk_dpth_l, convert:toFloat, bound:bound(0.0,5.0) }),
            outputKnifePasses:   newInput(LANG.dk_pass_s, {title:LANG.dk_pass_l, convert:toInt,   bound:bound(0,5) }),
            outputKnifeTip:      newInput(LANG.dk_offs_s, {title:LANG.dk_offs_l, convert:toFloat, bound:bound(0.0,10.0) }),
            laserLayout:         newGroup(LANG.lo_menu, $('lzr-layout'), { modes:TWOD, driven, separator }),
            outputTileSpacing:   newInput(LANG.ou_spac_s, {title:LANG.ou_spac_l, convert:toInt}),
            outputLaserMerged:   newBoolean(LANG.ou_mrgd_s, onBooleanClick, {title:LANG.ou_mrgd_l}),
            outputLaserGroup:    newBoolean(LANG.ou_grpd_s, onBooleanClick, {title:LANG.ou_grpd_l, show:() => !ui.outputLaserStack.checked}),
            laserOutput:         newGroup(LANG.ou_menu, $('lzr-output'), { modes:TWOD, driven, separator }),
            outputLaserPower:    newInput(LANG.ou_powr_s, {title:LANG.ou_powr_l, convert:toInt, bound:bound(1,100)}),
            outputLaserSpeed:    newInput(LANG.ou_sped_s, {title:LANG.ou_sped_l, convert:toInt}),
            separator:           newBlank({ class:"set-sep", driven }),
            outputOriginBounds:  newBoolean(LANG.or_bnds_s, onBooleanClick, {title:LANG.or_bnds_l}),
            outputOriginCenter:  newBoolean(LANG.or_cntr_s, onBooleanClick, {title:LANG.or_cntr_l}),
            separator:           newBlank({ class:"set-sep", driven }),
            outputLaserZColor:   newBoolean(LANG.ou_layo_s, onBooleanClick, {title:LANG.ou_layo_l, show:() => { return ui.outputLaserMerged.checked === false }}),
            outputLaserLayer:    newBoolean(LANG.ou_layr_s, onBooleanClick, {title:LANG.ou_layr_l}),
            outputLaserStack:    newBoolean(LANG.ou_lays_s, onBooleanClick, {title:LANG.ou_lays_l}),

            /** SLA SETTINGS */

            slaProc:             newGroup(LANG.sa_menu, $('sla-slice'), { modes:SLA, group:"sla-slice", driven, separator }),
            slaSlice:            newInput(LANG.sa_lahe_s, {title:LANG.sa_lahe_l, convert:toFloat}),
            slaShell:            newInput(LANG.sa_shel_s, {title:LANG.sa_shel_l, convert:toFloat}),
            slaOpenTop:          newBoolean(LANG.sa_otop_s, onBooleanClick, {title:LANG.sa_otop_l}),
            slaOpenBase:         newBoolean(LANG.sa_obas_s, onBooleanClick, {title:LANG.sa_obas_l}),
            slaLayers:           newGroup(LANG.sa_layr_m, $('sla-layers'), { modes:SLA, group:"sla-layers", driven, separator }),
            slaLayerOn:          newInput(LANG.sa_lton_s, {title:LANG.sa_lton_l, convert:toFloat}),
            slaLayerOff:         newInput(LANG.sa_ltof_s, {title:LANG.sa_ltof_l, convert:toFloat}),
            slaPeelDist:         newInput(LANG.sa_pldi_s, {title:LANG.sa_pldi_l, convert:toFloat}),
            slaPeelLiftRate:     newInput(LANG.sa_pllr_s, {title:LANG.sa_pllr_l, convert:toFloat}),
            slaPeelDropRate:     newInput(LANG.sa_pldr_s, {title:LANG.sa_pldr_l, convert:toFloat}),
            slaBase:             newGroup(LANG.sa_base_m, $('sla-base'), { modes:SLA, group:"sla-base", driven, separator }),
            slaBaseLayers:       newInput(LANG.sa_balc_s, {title:LANG.sa_balc_l, convert:toInt}),
            slaBaseOn:           newInput(LANG.sa_lton_s, {title:LANG.sa_bltn_l, convert:toFloat}),
            slaBaseOff:          newInput(LANG.sa_ltof_s, {title:LANG.sa_bltf_l, convert:toFloat}),
            slaBasePeelDist:     newInput(LANG.sa_pldi_s, {title:LANG.sa_pldi_l, convert:toFloat}),
            slaBasePeelLiftRate: newInput(LANG.sa_pllr_s, {title:LANG.sa_pllr_l, convert:toFloat}),
            slaFill:             newGroup(LANG.sa_infl_m, $('sla-fill'), { modes:SLA, group:"sla-infill", driven, separator }),
            slaFillDensity:      newInput(LANG.sa_ifdn_s, {title:LANG.sa_ifdn_l, convert:toFloat, bound:bound(0,1)}),
            slaFillLine:         newInput(LANG.sa_iflw_s, {title:LANG.sa_iflw_l, convert:toFloat, bound:bound(0,5)}),
            slaSupport:          newGroup(LANG.sa_supp_m, $('sla-support'), { modes:SLA, group:"sla-support", driven, separator }),
            slaSupportLayers:    newInput(LANG.sa_slyr_s, {title:LANG.sa_slyr_l, convert:toInt,   bound:bound(5,100)}),
            slaSupportGap:       newInput(LANG.sa_slgp_s, {title:LANG.sa_slgp_l, convert:toInt,   bound:bound(3,30)}),
            slaSupportDensity:   newInput(LANG.sa_sldn_s, {title:LANG.sa_sldn_l, convert:toFloat, bound:bound(0.01,0.9)}),
            slaSupportSize:      newInput(LANG.sa_slsz_s, {title:LANG.sa_slsz_l, convert:toFloat, bound:bound(0.1,1)}),
            slaSupportPoints:    newInput(LANG.sa_slpt_s, {title:LANG.sa_slpt_l, convert:toInt,   bound:bound(3,10)}),
            slaSupportEnable:    newBoolean(LANG.enable, onBooleanClick, {title:LANG.sl_slen_l}),
            slaOutput:           newGroup(LANG.sa_outp_m, $('sla-output'), { modes:SLA, group:"sla-first", driven, separator }),
            slaFirstOffset:      newInput(LANG.sa_opzo_s, {title:LANG.sa_opzo_l, convert:toFloat, bound:bound(0,1)}),
            slaAntiAlias:        newSelect(LANG.sa_opaa_s, {title:LANG.sa_opaa_l}, "antialias"),

            layers:             uc.setGroup($("layers")),

            settingsName:       $('settingsName'),
            settingsSave:       $('settingsSave'),
        });

        // override old style settings two-button menu
        ui.settingsSave.onclick = () => {
            settingsSave(undefined, ui.settingsName.value);
        };

        function optSelected(sel) {
            let opt = sel.options[sel.selectedIndex];
            return opt ? opt.value : undefined;
        }

        function fillShow() {
            return optSelected(ui.sliceFillType) === 'linear';
        }

        function spindleShow() {
            return settings().device.spindleMax > 0;
        }

        // slider setup
        const mobile = moto.space.info.mob;
        const slbar = mobile ? 80 : 30;
        const slbar2 = slbar * 2;
        const slider = ui.sliderRange;
        const drag = { };

        if (mobile) {
            ui.slider.classList.add('slider-mobile');
            ui.sliderLo.classList.add('slider-mobile');
            ui.sliderHi.classList.add('slider-mobile');
            // add css style for mobile devices
            DOC.body.classList.add('mobile');
        }

        function pxToInt(txt) {
            return txt ? parseInt(txt.substring(0,txt.length-2)) : 0;
        }

        function sliderUpdate() {
            let start = drag.low / drag.maxval;
            let end = (drag.low + drag.mid - slbar) / drag.maxval;
            api.event.emit('slider.pos', { start, end });
            api.var.layer_lo = Math.round(start * api.var.layer_max);
            api.var.layer_hi = Math.round(end * api.var.layer_max);
            api.show.layer();
            space.scene.active();
        }

        function dragit(el, delta) {
            el.ontouchstart = el.onmousedown = (ev) => {
                // el.classList.add('sli-drag-el');
                tracker.style.display = 'block';
                ev.stopPropagation();
                let obj = (ev.touches ? ev.touches[0] : ev);
                drag.width = slider.clientWidth;
                drag.maxval = drag.width - slbar2;
                drag.start = obj.screenX;
                drag.loat = drag.low = pxToInt(ui.sliderHold.style.marginLeft);
                drag.mdat = drag.mid = ui.sliderMid.clientWidth;
                drag.hiat = pxToInt(ui.sliderHold.style.marginRight);
                drag.mdmax = drag.width - slbar - drag.loat;
                drag.himax = drag.width - slbar - drag.mdat;
                let cancel_drag = tracker.ontouchend = tracker.onmouseup = (ev) => {
                    // el.classList.remove('sli-drag-el');
                    if (ev) {
                        ev.stopPropagation();
                        ev.preventDefault();
                    }
                    slider.onmousemove = undefined;
                    tracker.style.display = 'none';
                };
                el.ontouchend = cancel_drag;
                el.ontouchmove = tracker.ontouchmove = tracker.onmousemove = (ev) => {
                    ev.stopPropagation();
                    ev.preventDefault();
                    if (ev.buttons === 0) {
                        return cancel_drag();
                    }
                    if (delta) {
                        let obj = (ev.touches ? ev.touches[0] : ev);
                        delta(obj.screenX - drag.start);
                    }
                };
            };
        }

        dragit(ui.sliderLo, (delta) => {
            let midval = drag.mdat - delta;
            let lowval = drag.loat + delta;
            if (midval < slbar || lowval < 0) {
                return;
            }
            ui.sliderHold.style.marginLeft = `${lowval}px`;
            ui.sliderMid.style.width = `${midval}px`;
            drag.low = lowval;
            drag.mid = midval;
            sliderUpdate();
        });
        dragit(ui.sliderMid, (delta) => {
            let loval = drag.loat + delta;
            let hival = drag.hiat - delta;
            if (loval < 0 || hival < 0) return;
            ui.sliderHold.style.marginLeft = `${loval}px`;
            ui.sliderHold.style.marginRight = `${hival}px`;
            drag.low = loval;
            sliderUpdate();
        });
        dragit(ui.sliderHi, (delta) => {
            let midval = drag.mdat + delta;
            let hival = drag.hiat - delta;
            if (midval < slbar || midval > drag.mdmax || hival < 0) return;
            ui.sliderMid.style.width = `${midval}px`;
            ui.sliderHold.style.marginRight = `${hival}px`;
            drag.mid = midval;
            sliderUpdate();
        });

        ui.load.onchange = function(event) {
            api.platform.load_files(event.target.files);
            ui.load.value = ''; // reset so you can re-import the same filee
        };

        ui.sliderMin.onclick = () => {
            api.show.layer(0,0);
        }

        ui.sliderMax.onclick = () => {
            api.show.layer(api.var.layer_max,0);
        }

        ui.slider.onmouseover = (ev) => {
            api.event.emit('slider.label');
        };

        ui.slider.onmouseleave = (ev) => {
            if (!ev.buttons) api.event.emit('slider.unlabel');
        };

        api.event.on('slider.unlabel', (values) => {
        });

        api.event.on('slider.label', (values) => {
            let digits = api.var.layer_max.toString().length;
            $('slider-zero').style.width = `${digits}em`;
            $('slider-max').style.width = `${digits}em`;
            $('slider-zero').innerText = api.var.layer_lo;
            $('slider-max').innerText = api.var.layer_hi;
        });

        api.event.on('slider.set', (values) => {
            let width = slider.clientWidth;
            let maxval = width - slbar2;
            let start = Math.max(0, Math.min(1, values.start));
            let end = Math.max(start, Math.min(1, values.end));
            let lowval = start * maxval;
            let midval = ((end - start) * maxval) + slbar;
            let hival = maxval - end * maxval;
            ui.sliderHold.style.marginLeft = `${lowval}px`;
            ui.sliderMid.style.width = `${midval}px`;
            ui.sliderHold.style.marginRight = `${hival}px`;
        });

        // store layer preferences
        api.event.on('stack.show', label => {
            let mode = api.mode.get();
            let view = api.view.get();
            api.conf.get().labels[`${mode}-${view}-${label}`] = true;
        });

        api.event.on('stack.hide', label => {
            let mode = api.mode.get();
            let view = api.view.get();
            api.conf.get().labels[`${mode}-${view}-${label}`] = false;
        });

        // bind language choices
        $('lset-en').onclick = function() {
            sdb.setItem('kiri-lang', 'en-us');
            api.space.reload();
        };
        $('lset-da').onclick = function() {
            sdb.setItem('kiri-lang', 'da-dk');
            api.space.reload();
        };
        $('lset-de').onclick = function() {
            sdb.setItem('kiri-lang', 'de-de');
            api.space.reload();
        };
        $('lset-fr').onclick = function() {
            sdb.setItem('kiri-lang', 'fr-fr');
            api.space.reload();
        };
        $('lset-pl').onclick = function() {
            sdb.setItem('kiri-lang', 'pl-pl');
            api.space.reload();
        };
        $('lset-pt').onclick = function() {
            sdb.setItem('kiri-lang', 'pt-pt');
            api.space.reload();
        };
        $('lset-es').onclick = function() {
            sdb.setItem('kiri-lang', 'es-es');
            api.space.reload();
        };
        $('lset-zh').onclick = function() {
            sdb.setItem('kiri-lang', 'zh');
            api.space.reload();
        };

        space.event.addHandlers(self, [
            'keyup', keyUpHandler,
            'keydown', keyDownHandler,
            'keypress', keyHandler,
            'dragover', dragOverHandler,
            'dragleave', dragLeave,
            'drop', dropHandler
        ]);

        function selectionSize(e) {
            let dv = parseFloat(e.target.value || 1),
                pv = parseFloat(e.target.was || 1),
                ra = dv / pv,
                xv = parseFloat(ui.sizeX.was ?? ui.scaleX.value) || 1,
                yv = parseFloat(ui.sizeY.was ?? ui.scaleY.value) || 1,
                zv = parseFloat(ui.sizeZ.was ?? ui.scaleZ.value) || 1,
                ta = e.target,
                xc = ui.lockX.checked,
                yc = ui.lockY.checked,
                zc = ui.lockZ.checked,
                xt = ta === ui.sizeX,
                yt = ta === ui.sizeY,
                zt = ta === ui.sizeZ,
                tl = (xt && xc) || (yt && yc) || (zt && zc),
                xr = ((tl && xc) || (!tl && xt) ? ra : 1),
                yr = ((tl && yc) || (!tl && yt) ? ra : 1),
                zr = ((tl && zc) || (!tl && zt) ? ra : 1);
            // prevent null scale
            if (xr * yr * zr === 0) {
                return;
            }
            api.selection.scale(xr,yr,zr);
            ui.sizeX.was = ui.sizeX.value = xv * xr;
            ui.sizeY.was = ui.sizeY.value = yv * yr;
            ui.sizeZ.was = ui.sizeZ.value = zv * zr;
        }

        function selectionScale(e) {
            let dv = parseFloat(e.target.value || 1),
                pv = parseFloat(e.target.was || 1),
                ra = dv / pv,
                xv = parseFloat(ui.scaleX.was ?? ui.scaleX.value) || 1,
                yv = parseFloat(ui.scaleY.was ?? ui.scaleY.value) || 1,
                zv = parseFloat(ui.scaleZ.was ?? ui.scaleY.value) || 1,
                ta = e.target,
                xc = ui.lockX.checked,
                yc = ui.lockY.checked,
                zc = ui.lockZ.checked,
                xt = ta === ui.scaleX,
                yt = ta === ui.scaleY,
                zt = ta === ui.scaleZ,
                tl = (xt && xc) || (yt && yc) || (zt && zc),
                xr = ((tl && xc) || (!tl && xt) ? ra : 1),
                yr = ((tl && yc) || (!tl && yt) ? ra : 1),
                zr = ((tl && zc) || (!tl && zt) ? ra : 1);

            api.selection.scale(xr,yr,zr);
            ui.scaleX.was = ui.scaleX.value = xv * xr;
            ui.scaleY.was = ui.scaleY.value = yv * yr;
            ui.scaleZ.was = ui.scaleZ.value = zv * zr;
        }

        function selectionRotate(e) {
            let val = parseFloat(e.target.value) || 0;
            // let deg = val * DEG2RAD;
            e.target.value = val;
        }

        space.event.onEnterKey([
            ui.scaleX,        selectionScale,
            ui.scaleY,        selectionScale,
            ui.scaleZ,        selectionScale,
            ui.sizeX,         selectionSize,
            ui.sizeY,         selectionSize,
            ui.sizeZ,         selectionSize,
            ui.toolName,      updateTool,
            ui.toolNum,       updateTool,
            ui.toolFluteDiam, updateTool,
            ui.toolFluteLen,  updateTool,
            ui.toolShaftDiam, updateTool,
            ui.toolShaftLen,  updateTool,
            ui.toolTaperTip,  updateTool,
            ui.toolTaperAngle, updateTool,
            $('rot_x'),       selectionRotate,
            $('rot_y'),       selectionRotate,
            $('rot_z'),       selectionRotate
        ], true);

        $('lab-axis').onclick = () => {
            ui.lockX.checked =
            ui.lockY.checked =
            ui.lockZ.checked = !(
                ui.lockX.checked ||
                ui.lockY.checked ||
                ui.lockZ.checked
            );
        };

        $('scale-reset').onclick = $('lab-scale').onclick = () => {
            api.selection.scale(1 / ui.scaleX.was, 1 / ui.scaleY.was, 1 / ui.scaleZ.was);
            ui.scaleX.value = ui.scaleY.value = ui.scaleZ.value =
            ui.scaleX.was = ui.scaleY.was = ui.scaleZ.was = 1;
        };

        $('app-xpnd').onclick = () => {
            try {
                DOC.body.requestFullscreen();
            } catch (e) {
                event.emit('resize');
                moto.space.event.onResize();
            }
        };

        if (!DOC.body.requestFullscreen) {
            $('app-xpnd').style.display = 'none';
        }

        uc.onBlur([
            ui.toolName,
            ui.toolNum,
            ui.toolFluteDiam,
            ui.toolFluteLen,
            ui.toolShaftDiam,
            ui.toolShaftLen,
            ui.toolTaperTip,
        ], updateTool);

        ui.toolMetric.onclick = updateTool;
        ui.toolType.onchange = updateTool;
        // default show gcode pre
        ui.gcodePre.button.click();

        function mksvg(src) {
            let svg = DOC.createElement('svg');
            svg.innerHTML = src;
            return svg;
        }

        function mklbl(src) {
            let lbl = DOC.createElement('label');
            lbl.innerText = src;
            return lbl;
        }

        api.platform.update_size();

        function mouseOnHover(int, event, ints) {
            if (!api.feature.hover) return;
            if (!int) return api.feature.hovers || api.widgets.meshes();
            api.event.emit('mouse.hover', {int, ints, event, point: int.point, type: 'widget'});
        }

        function platformOnHover(int, event) {
            if (!api.feature.hover) return;
            if (int) api.event.emit('mouse.hover', {point: int, event, type: 'platform'});
        }

        api.event.on("feature.hover", enable => {
            space.mouse.onHover(enable ? mouseOnHover : undefined);
            space.platform.onHover(enable ? platformOnHover : undefined);
        });

        // block standard browser context menu
        DOC.oncontextmenu = (event) => {
            let et = event.target;
            if (et.tagName === 'CANVAS' || et.id === 'context-menu' || et.classList.contains('draggable')) {
                event.preventDefault();
                event.stopPropagation();
                return false;
            }
        };

        space.mouse.downSelect((int, event) => {
            if (api.feature.on_mouse_down) {
                if (int) {
                    api.feature.on_mouse_down(int, event);
                    return;
                }
            }
            if (api.feature.hover) {
                if (int) {
                    return api.event.emit('mouse.hover.down', {int, point: int.point});
                } else {
                    return api.selection.meshes();
                }
            }
            // lay flat with meta or ctrl clicking a selected face
            if (int && (event.ctrlKey || event.metaKey || api.feature.on_face_select)) {
                let q = new THREE.Quaternion();
                // find intersecting point, look "up" on Z and rotate to face that
                q.setFromUnitVectors(int.face.normal, new THREE.Vector3(0,0,-1));
                api.selection.rotate(q);
            }
            if (api.view.get() !== VIEWS.ARRANGE) {
                // return no selection in modes other than arrange
                return null;
            } else {
                // return selected meshes for further mouse processing
                return api.feature.hovers || api.selection.meshes();
            }
        });

        space.mouse.upSelect((object, event) => {
            if (api.feature.on_mouse_up) {
                if (event && object) {
                    return api.feature.on_mouse_up(object, event);
                } else {
                    return api.widgets.meshes();
                }
            }
            if (event && api.feature.hover) {
                api.event.emit('mouse.hover.up', { object, event });
                return;
            }
            if (event && event.target.nodeName === "CANVAS") {
                if (object && object.object) {
                    if (object.object.widget) {
                        platform.select(object.object.widget, event.shiftKey, false);
                    }
                } else {
                    platform.deselect();
                }
            } else {
                return api.feature.hovers || api.widgets.meshes();
            }
        });

        space.mouse.onDrag(function(delta, offset, up = false) {
            if (api.feature.hover) {
                return;
            }
            if (up) {
                api.event.emit('mouse.drag.done', offset);
            }
            if (delta && ui.freeLayout.checked) {
                let set = settings();
                let dev = set.device;
                let bound = set.bounds_sel;
                let width = dev.bedWidth/2;
                let depth = dev.bedDepth/2;
                let isout = (
                    bound.min.x <= -width ||
                    bound.min.y <= -depth ||
                    bound.max.x >= width ||
                    bound.max.y >= depth
                );
                if (!isout) {
                    if (bound.min.x + delta.x <= -width) return;
                    if (bound.min.y + delta.y <= -depth) return;
                    if (bound.max.x + delta.x >= width) return;
                    if (bound.max.y + delta.y >= depth) return;
                }
                api.selection.move(delta.x, delta.y, 0);
                api.event.emit('selection.drag', delta);
            } else {
                return api.selection.meshes().length > 0;
            }
        });

        api.space.restore(init_two) || checkSeed(init_two) || init_two();

    };

    // SECOND STAGE INIT AFTER UI RESTORED
    function init_two() {
        api.event.emit('init.two');

        // call driver initializations, if present
        Object.values(kiri.driver).forEach(driver => {
            if (driver.init) try {
                driver.init(kiri, api);
            } catch (error) {
                console.log({driver_init_fail: driver, error})
            }
        });

        // load script extensions
        if (SETUP.s) SETUP.s.forEach(function(lib) {
            let scr = DOC.createElement('script');
            scr.setAttribute('defer',true);
            scr.setAttribute('src',`/code/${lib}.js?${kiri.version}`);
            DOC.body.appendChild(scr);
            stats.add('load_'+lib);
            api.event.emit('load.lib', lib);
        });

        // load CSS extensions
        if (SETUP.ss) SETUP.ss.forEach(function(style) {
            style = style.charAt(0) === '/' ? style : `/kiri/style-${style}`;
            let ss = DOC.createElement('link');
            ss.setAttribute("type", "text/css");
            ss.setAttribute("rel", "stylesheet");
            ss.setAttribute("href", `${style}.css?${kiri.version}`);
            DOC.body.appendChild(ss);
        });

        // override stored settings
        if (SETUP.v) SETUP.v.forEach(function(kv) {
            kv = kv.split('=');
            sdb.setItem(kv[0],kv[1]);
        });

        // import octoprint settings
        if (SETUP.ophost) {
            let ohost = api.const.OCTO = {
                host: SETUP.ophost[0],
                apik: SETUP.opkey ? SETUP.opkey[0] : ''
            };
            sdb['octo-host'] = ohost.host;
            sdb['octo-apik'] = ohost.apik;
            console.log({octoprint:ohost});
        }

        // load workspace from url
        if (SETUP.wrk) {
            api.settings.import_url(`${proto}//${SETUP.wrk[0]}`, false);
        }

        // bind this to UI so main can call it on settings import
        ui.sync = function() {
            const current = settings();
            const control = current.controller;
            const process = settings.process;

            platform.deselect();
            catalog.addFileListener(updateCatalog);
            space.view.setZoom(control.reverseZoom, control.zoomSpeed);
            space.platform.setGridZOff(undefined);
            space.platform.setZOff(0.05);

            // restore UI state from settings
            ui.showOrigin.checked = control.showOrigin;
            ui.showRulers.checked = control.showRulers;
            ui.showSpeeds.checked = control.showSpeeds;
            ui.freeLayout.checked = control.freeLayout;
            ui.autoLayout.checked = control.autoLayout;
            ui.spaceRandoX.checked = control.spaceRandoX;
            ui.antiAlias.checked = control.antiAlias;
            ui.reverseZoom.checked = control.reverseZoom;
            ui.autoSave.checked = control.autoSave;
            ui.healMesh.checked = control.healMesh;
            ui.threaded.checked = setThreaded(control.threaded);
            ui.assembly.checked = control.assembly;
            ui.ortho.checked = control.ortho;
            ui.devel.checked = control.devel;
            lineTypeSave();
            detailSave();
            updateStats();

            // optional set-and-lock mode (hides mode menu)
            let SETMODE = SETUP.mode ? SETUP.mode[0] : null;

            // optional set-and-lock device (hides device menu)
            let DEVNAME = SETUP.dev ? SETUP.dev[0] : null;

            // setup default mode and enable mode locking, if set
            api.mode.set(SETMODE || STARTMODE || current.mode, SETMODE);

            // fill device list
            updateDeviceList();

            // update ui fields from settings
            api.conf.update_fields();

            // default to ARRANGE view mode
            api.view.set(VIEWS.ARRANGE);

            // add ability to override
            api.show.controls(api.feature.controls);

            // update everything dependent on the platform size
            platform.update_size();

            // load wasm if indicated
            kiri.client.wasm(control.assembly === true);
        };

        ui.sync();

        // clear alerts as they build up
        setInterval(api.event.alerts, 1000);

        // add hide-alerts-on-alert-click
        ui.alert.dialog.onclick = function() {
            api.event.alerts(true);
        };

        // enable modal hiding
        $('mod-x').onclick = api.modal.hide;

        if (!SETUP.s) console.log(`kiri | init main | ${kiri.version}`);

        // send init-done event
        api.event.emit('init-done', stats);

        // show gdpr if it's never been seen and we're not iframed
        if (!sdb.gdpr && WIN.self === WIN.top && !SETUP.debug && !api.const.LOCAL) {
            $('gdpr').style.display = 'flex';
        }

        // warn of degraded functionality when SharedArrayBuffers are missing
        if (api.feature.work_alerts && !window.SharedArrayBuffer) {
            api.alerts.show("The security context of this", 10);
            api.alerts.show("window blocks important functionality", 10);
        }

        // add keyboard focus handler (must use for iframes)
        WIN.addEventListener('load', function () {
            WIN.focus();
            DOC.body.addEventListener('click', function() {
                WIN.focus();
            },false);
        });

        // dismiss gdpr alert
        $('gotit').onclick = () => {
            $('gdpr').style.display = 'none';
            sdb.gdpr = Date.now();
        };

        // lift curtain
        $('curtain').style.display = 'none';

        // bind interface action elements
        $('app-name').onclick = api.help.show;
        $('mode-device').onclick = showDevices;
        $('mode-profile').onclick = settingsLoad;
        $('mode-fdm').onclick = () => api.mode.set('FDM');
        $('mode-cam').onclick = () => api.mode.set('CAM');
        $('mode-sla').onclick = () => api.mode.set('SLA');
        $('mode-laser').onclick = () => api.mode.set('LASER');
        $('mode-drag').onclick = () => api.mode.set('DRAG');
        $('mode-wjet').onclick = () => api.mode.set('WJET');
        $('mode-wedm').onclick = () => api.mode.set('WEDM');
        $('set-device').onclick = (ev) => { ev.stopPropagation(); showDevices() };
        $('set-profs').onclick = (ev) => { ev.stopPropagation(); api.conf.show() };
        $('set-tools').onclick = (ev) => { ev.stopPropagation(); showTools() };
        $('set-prefs').onclick = (ev) => { ev.stopPropagation(); api.modal.show('prefs') };
        ui.acct.help.onclick = (ev) => { ev.stopPropagation(); api.help.show() };
        ui.acct.export.onclick = (ev) => { ev.stopPropagation(); profileExport() };
        ui.acct.export.title = LANG.acct_xpo;
        $('file-recent').onclick = () => { api.modal.show('files') };
        $('file-import').onclick = (ev) => { api.event.import(ev); };
        ui.func.slice.onclick = (ev) => { ev.stopPropagation(); api.function.slice() };
        ui.func.preview.onclick = (ev) => { ev.stopPropagation(); api.function.print() };
        ui.func.animate.onclick = (ev) => { ev.stopPropagation(); api.function.animate() };
        ui.func.export.onclick = (ev) => { ev.stopPropagation(); api.function.export() };
        $('view-arrange').onclick = api.platform.layout;
        $('view-top').onclick = space.view.top;
        $('view-home').onclick = space.view.home;
        $('view-front').onclick = space.view.front;
        $('view-back').onclick = space.view.back;
        $('view-left').onclick = space.view.left;
        $('view-right').onclick = space.view.right;
        $('unrotate').onclick = () => {
            api.widgets.for(w => w.unrotate());
            api.selection.update_info();
        };
        // rotation buttons
        let d = (Math.PI / 180);
        $('rot_x_lt').onclick = () => { api.selection.rotate(-d * $('rot_x').value,0,0) };
        $('rot_x_gt').onclick = () => { api.selection.rotate( d * $('rot_x').value,0,0) };
        $('rot_y_lt').onclick = () => { api.selection.rotate(0,-d * $('rot_y').value,0) };
        $('rot_y_gt').onclick = () => { api.selection.rotate(0, d * $('rot_y').value,0) };
        $('rot_z_lt').onclick = () => { api.selection.rotate(0,0, d * $('rot_z').value) };
        $('rot_z_gt').onclick = () => { api.selection.rotate(0,0,-d * $('rot_z').value) };
        // rendering options
        $('render-ghost').onclick = () => { api.view.wireframe(false, 0, api.view.is_arrange() ? 0.4 : 0.25); };
        $('render-wire').onclick = () => { api.view.wireframe(true, 0, api.space.is_dark() ? 0.25 : 0.5); };
        $('render-solid').onclick = () => { api.view.wireframe(false, 0, 1); };
        // mesh buttons
        // $('mesh-swap').onclick = () => { api.widgets.replace() };
        // $('mesh-enable').onclick = () => { api.selection.enable() };
        // $('mesh-disable').onclick = () => { api.selection.disable() };
        // $('mesh-rename').onclick = () => { api.widgets.rename() };
        $('mesh-export-stl').onclick = () => { objectsExport('stl') };
        $('mesh-export-obj').onclick = () => { objectsExport('obj') };
        $('context-duplicate').onclick = duplicateSelection;
        $('context-mirror').onclick = mirrorSelection;
        $('context-layflat').onclick = () => { api.event.emit("tool.mesh.lay-flat") };
        $('context-setfocus').onclick = () => {
            api.event.emit(
                "tool.camera.focus",
                ev => api.space.set_focus(undefined, ev.object.point)
            );
        };

        ui.modal.onclick = api.modal.hide;
        ui.modalBox.onclick = (ev) => { ev.stopPropagation() };

        // add app name hover info
        $('app-info').innerText = kiri.version;

        // show topline separator when iframed
        try { if (WIN.self !== WIN.top) $('top-sep').style.display = 'flex' } catch (e) { console.log(e) }

        // warn users they are running a beta release
        if (kiri.beta && kiri.beta > 0 && sdb.kiri_beta != kiri.beta) {
            api.show.alert("this is a beta / development release");
            sdb.kiri_beta = kiri.beta;
        }

        // add palette3 edit button after filament source selector
        {
            let randomId = Math.round(Math.random() * 0xffffffffffff).toString(16);
            let fsp = ui.filamentSource.parentNode;
            let btn = ui.filamentSourceEdit = DOC.createElement('button');
            btn.setAttribute('id', 'fs-edit');
            btn.appendChild(DOC.createTextNode('edit'));
            fsp.insertBefore(btn, ui.filamentSource);
            let editDone = () => {
                let device = api.conf.get().device;
                let extra = device.extras = device.extras || {};
                btn.onclick = edit;
                btn.innerText = 'edit';
                ui.extruder.parentNode.style.display = 'flex';
                ui.palette.parentNode.style.display = 'none';
                // save settings
                extra.palette = {
                    printer: ui.paletteId.value || randomId,
                    ping: ui.palettePing.convert(),
                    feed: ui.paletteFeed.convert(),
                    push: ui.palettePush.convert(),
                    offset: ui.paletteOffset.convert(),
                    heat: ui.paletteHeat.convert(),
                    cool: ui.paletteCool.convert(),
                    press: ui.palettePress.convert()
                };
            };
            let edit = btn.onclick = () => {
                let device = api.conf.get().device;
                let extra = device.extras = device.extras || {};
                let pinfo = extra.palette;
                if (!pinfo) {
                    pinfo = extra.palette = {
                        printer: randomId,
                        feed: 570,
                        push: 600,
                        heat: 0,
                        cool: 0,
                        press: 0
                    };
                }
                ui.paletteId.value = pinfo.printer;
                ui.palettePing.value = pinfo.ping || 0;
                ui.paletteFeed.value = pinfo.feed || 0;
                ui.palettePush.value = pinfo.push || 0;
                ui.paletteOffset.value = pinfo.offset || 0;
                ui.paletteHeat.value = pinfo.heat || 0;
                ui.paletteCool.value = pinfo.cool || 0;
                ui.palettePress.value = pinfo.press || 0;
                ui.extruder.parentNode.style.display = 'none';
                ui.palette.parentNode.style.display = 'flex';
                btn.innerText = 'done';
                btn.onclick = editDone;
            };
            api.event.on(["device.select", "filament.source"], () => {
                ui.extruder.parentNode.style.display = 'flex';
                ui.palette.parentNode.style.display = 'none';
                btn.innerText = 'edit';
                btn.onclick = edit;
            });
            api.event.on("device.save", editDone);
        }
    }

    // update static html elements with language overrides
    ui.lang = function() {
        // lk attribute causes inner text to be replaced with lang value
        for (let el of [...DOC.querySelectorAll("[lk]")]) {
            let key = el.getAttribute('lk');
            let val = LANG[key];
            if (val) {
                el.innerText = val;
            } else {
                console.log({missing_ln: key});
            }
        }
        // lkt attribute causes a title attribute to be set from lang value
        for (let el of [...DOC.querySelectorAll("[lkt]")]) {
            let key = el.getAttribute('lkt');
            let val = LANG[key];
            if (val) {
                el.setAttribute("title", val);
            } else {
                console.log({missing_ln: key});
            }
        }
    }

    // init lang must happen before all other init functions
    function init_lang() {
        // if a language needs to load, the script is injected and loaded
        // first.  once this loads, or doesn't, the initialization begins
        let lang = SETUP.ln ? SETUP.ln[0] : sdb.getItem('kiri-lang') || kiri.lang.get();
        // inject language script if not english
        if (lang && lang !== 'en' && lang !== 'en-us') {
            let map = kiri.lang.map(lang);
            let scr = DOC.createElement('script');
            // scr.setAttribute('defer',true);
            scr.setAttribute('src',`/kiri/lang/${map}.js?${kiri.version}`);
            (DOC.body || DOC.head).appendChild(scr);
            stats.set('ll',lang);
            scr.onload = function() {
                kiri.lang.set(map);
                ui.lang();
                init_one();
            };
            scr.onerror = function(err) {
                console.log({language_load_error: err, lang})
                kiri.lang.set();
                ui.lang();
                init_one();
            }
        } else {
            // set to browser default which will be overridden
            // by any future script loads (above)
            kiri.lang.set();
            ui.lang();
            init_one();
        }
    }

    // setup init() trigger when dom + scripts complete
    DOC.onreadystatechange = function() {
        if (DOC.readyState === 'complete') {
            init_lang();
        }
    }

});