Pytml

root / dist / pytml.js

pytml.js (40150B)

---

 fetch('https://pytml.vercel.app/api/count', {
   cache: 'no-store',
   referrerPolicy: 'origin'
 })
   .then(r => r.json())
   .then(data => console.log('Pytml loaded:', data.message, 'times'))
   .catch(() => {});
 /*
  * Pytml 2.5.1
  * Python + HTML, powered by Pyodide.
  * 
  * Pytml 2.5 includes a lightweight inline UI preprocessor for <pyN> blocks.
  * The full document/language compiler remains planned for v3.0.
  */
 (function (global) {
   'use strict';
 
   const VERSION = '2.5.1';
   const PYODIDE_VERSION = '314.0.7';
   const PYODIDE_INDEX = `https://cdn.jsdelivr.net/pyodide/v${PYODIDE_VERSION}/full/`;
   const PYODIDE_SCRIPT = `${PYODIDE_INDEX}pyodide.js`;
   // file:// is supported for inline Python. Pyodide itself stays on the HTTPS CDN.
   const IS_FILE_PROTOCOL = typeof location !== 'undefined' && location.protocol === 'file:';
   const PY_BLOCK = /^py(?:\d+)?$/i;
 
   // --- Network helpers. Pyodide is loaded only when a Python block is present. ---
   let _pyodideScriptPromise = null;
 
   function preconnect() {
     for (const [rel, href] of [
       ['preconnect', 'https://cdn.jsdelivr.net'],
       ['dns-prefetch', 'https://cdn.jsdelivr.net'],
     ]) {
       const link = document.createElement('link');
       link.rel = rel;
       link.href = href;
       if (rel === 'preconnect') link.crossOrigin = 'anonymous';
       document.head.appendChild(link);
     }
   }
 
   function preloadPyodideScript() {
     if (_pyodideScriptPromise) return _pyodideScriptPromise;
     _pyodideScriptPromise = new Promise((resolve, reject) => {
       if (typeof global.loadPyodide === 'function') return resolve();
       const existing = document.querySelector(`script[src="${PYODIDE_SCRIPT}"]`);
       if (existing) {
         existing.addEventListener('load', resolve, { once: true });
         existing.addEventListener('error', () => reject(new Error(`Failed to load ${PYODIDE_SCRIPT}`)), { once: true });
         return;
       }
       const script = document.createElement('script');
       script.src = PYODIDE_SCRIPT;
       script.async = true;
       script.crossOrigin = 'anonymous';
       script.onload = resolve;
       script.onerror = () => reject(new Error(`Failed to load ${PYODIDE_SCRIPT}`));
       document.head.appendChild(script);
     });
     return _pyodideScriptPromise;
   }
 
   // --- Boot lock: interactive elements are visible but inert until Python is ready ---
   function installBootState() {
     document.documentElement.classList.add('pytml-booting');
     const style = document.createElement('style');
     style.id = 'pytml-boot-style';
     style.textContent = `
       /* Page paints normally, but nothing is clickable until Python is up */
       html.pytml-booting button,
       html.pytml-booting input,
       html.pytml-booting select,
       html.pytml-booting textarea,
       html.pytml-booting a[href],
       html.pytml-booting [role="button"],
       html.pytml-booting [contenteditable="true"] {
         pointer-events: none !important;
         opacity: 0.5;
         cursor: not-allowed !important;
         user-select: none;
         transition: opacity 0.2s ease;
       }
 
       /* Small fixed pill at the top so users know why nothing is clickable */
       .pytml-boot-pill {
         position: fixed; top: 16px; left: 50%; transform: translateX(-50%);
         display: flex; align-items: center; gap: 8px;
         background: rgba(10,14,39,0.95); color: #c8cdda;
         border: 1px solid rgba(102,126,234,0.4);
         border-radius: 999px; padding: 8px 16px;
         font: 13px system-ui, -apple-system, sans-serif;
         z-index: 2147483647;
         box-shadow: 0 4px 20px rgba(0,0,0,0.35);
         backdrop-filter: blur(6px);
       }
       .pytml-boot-pill.pytml-boot-error {
         border-color: rgba(255,80,120,0.5);
         color: #ff8aa8;
       }
       .pytml-boot-spinner {
         width: 14px; height: 14px; flex: 0 0 14px;
         border-radius: 50%;
         border: 2px solid rgba(102,126,234,0.25);
         border-top-color: #3b82f6;
         animation: pytml-spin 0.8s linear infinite;
       }
       @keyframes pytml-spin { to { transform: rotate(360deg); } }
       @media (prefers-reduced-motion: reduce) { .pytml-boot-spinner { animation: none; } }
     `;
     (document.head || document.documentElement).appendChild(style);
 
     const mount = () => {
       if (document.querySelector('.pytml-boot-pill')) return;
       const pill = document.createElement('div');
       pill.className = 'pytml-boot-pill';
       pill.innerHTML = `<span class="pytml-boot-spinner"></span><span>Loading Python…</span>`;
       document.body.appendChild(pill);
     };
     if (document.body) mount();
     else document.addEventListener('DOMContentLoaded', mount, { once: true });
   }
 
   function clearBootState() {
     document.documentElement.classList.remove('pytml-booting');
     document.documentElement.classList.add('pytml-ready');
     document.querySelectorAll('.pytml-boot-pill').forEach(el => el.remove());
   }
 
   function failBootState(message) {
     document.documentElement.classList.remove('pytml-booting');
     document.querySelectorAll('.pytml-boot-pill').forEach(el => {
       el.classList.add('pytml-boot-error');
       el.innerHTML = `<span>${message || 'Python failed to load.'}</span>`;
     });
   }
 
   function pageHasPythonBlocks() {
     if (document.querySelector('script[type="text/python"]')) return true;
     return Array.from(document.querySelectorAll('*')).some((el) => {
       const tag = el.tagName?.toLowerCase?.() || '';
       return PY_BLOCK.test(tag);
     });
   }
 
   const DEFAULT_STYLE = `
     .pytml-output{box-sizing:border-box;background:#0a0e27;color:#e7e9ee;border:1px solid rgba(102,126,234,.28);border-radius:14px;padding:16px;margin:16px 0;font:14px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;max-height:420px;overflow:auto}
     .pytml-line{margin:4px 0;white-space:pre-wrap;overflow-wrap:anywhere}
     .pytml-error{color:#ff8aa8;background:rgba(255,80,120,.10);padding:8px 10px;border-radius:8px}
     .pytml-input-container{background:#11162f;border:1px solid rgba(102,126,234,.35);border-radius:12px;padding:14px;margin:14px 0}
     .pytml-input-prompt{font:600 14px system-ui,sans-serif;color:#f2d15b;margin-bottom:8px}
     .pytml-input-field{width:100%;box-sizing:border-box;padding:10px 12px;border-radius:8px;border:1px solid rgba(255,255,255,.18);background:#090c1c;color:#fff;outline:none;margin-bottom:9px}
     .pytml-input-submit{border:0;border-radius:8px;padding:9px 14px;background:#3b82f6;color:#fff;font-weight:600;cursor:pointer}
     .pytml-joystick{position:relative;touch-action:none;user-select:none;-webkit-user-select:none;overflow:hidden}
     .pytml-joystick-knob{position:absolute;left:50%;top:50%;width:32%;aspect-ratio:1;border-radius:50%;transform:translate(-50%,-50%);background:currentColor;opacity:.78;pointer-events:none}
     [data-pytml-hidden]{display:none!important}
   `;
 
   // This is the Python-side DOM/runtime module injected into Pyodide at startup.
   const PYTHON_MODULE = String.raw`
 import js
 import asyncio
 from pyodide.ffi import create_proxy
 import html as _html_escape
 
 
 _callbacks = []
 
 class Event(dict):
     """Dictionary-like browser event with default-control helpers."""
     def __init__(self, data, raw):
         super().__init__(data)
         self._raw = raw
     def __getattr__(self, name):
         try:
             return self[name]
         except KeyError as exc:
             raise AttributeError(name) from exc
     def prevent_default(self):
         self._raw.preventDefault()
     def stop_propagation(self):
         self._raw.stopPropagation()
     def stop_immediate_propagation(self):
         self._raw.stopImmediatePropagation()
 
 class Element:
     def __init__(self, obj):
         self._obj = obj
 
     @property
     def element(self): return self._obj
     @property
     def value(self): return self._obj.value if hasattr(self._obj, 'value') else ''
     @value.setter
     def value(self, value): self._obj.value = '' if value is None else str(value)
     @property
     def text(self): return self._obj.textContent or ''
     @text.setter
     def text(self, value): self._obj.textContent = '' if value is None else str(value)
     @property
     def html(self): return self._obj.innerHTML or ''
     @html.setter
     def html(self, value): self._obj.innerHTML = '' if value is None else str(value)
     @property
     def checked(self): return bool(getattr(self._obj, 'checked', False))
     @checked.setter
     def checked(self, value): self._obj.checked = bool(value)
     @property
     def selected(self): return bool(getattr(self._obj, 'selected', False))
     @selected.setter
     def selected(self, value): self._obj.selected = bool(value)
     @property
     def disabled(self): return bool(getattr(self._obj, 'disabled', False))
     @disabled.setter
     def disabled(self, value): self._obj.disabled = bool(value)
     @property
     def visible(self): return bool(js.pytmlInstance.element(self._obj).visible)
     @visible.setter
     def visible(self, value): js.pytmlInstance.element(self._obj).visible = bool(value)
     @property
     def id(self): return str(self._obj.id)
     @property
     def tag(self): return str(self._obj.tagName).lower()
     @property
     def placeholder(self): return getattr(self._obj, 'placeholder', '')
     @placeholder.setter
     def placeholder(self, value): self._obj.placeholder = str(value)
     @property
     def class_name(self): return str(self._obj.className)
     @class_name.setter
     def class_name(self, value): self._obj.className = str(value)
     @property
     def x(self): return float(self._obj.getBoundingClientRect().x)
     @property
     def y(self): return float(self._obj.getBoundingClientRect().y)
     @property
     def width(self): return float(self._obj.getBoundingClientRect().width)
     @property
     def height(self): return float(self._obj.getBoundingClientRect().height)
     @property
     def scroll_top(self): return float(getattr(self._obj, 'scrollTop', 0))
     @scroll_top.setter
     def scroll_top(self, value): self._obj.scrollTop = float(value)
     @property
     def scroll_left(self): return float(getattr(self._obj, 'scrollLeft', 0))
     @scroll_left.setter
     def scroll_left(self, value): self._obj.scrollLeft = float(value)
     @property
     def files(self):
         files = getattr(self._obj, 'files', None)
         if not files:
             return []
         return [{'name': f.name, 'size': int(f.size), 'type': f.type, 'last_modified': int(f.lastModified)} for f in files]
 
     def attr(self, name): return self._obj.getAttribute(str(name))
     def set_attr(self, name, value): self._obj.setAttribute(str(name), str(value))
     def remove_attr(self, name): self._obj.removeAttribute(str(name))
     def add_class(self, name): self._obj.classList.add(str(name))
     def remove_class(self, name): self._obj.classList.remove(str(name))
     def toggle_class(self, name, force=None):
         if force is None:
             return bool(self._obj.classList.toggle(str(name)))
         return bool(self._obj.classList.toggle(str(name), bool(force)))
     def has_class(self, name): return bool(self._obj.classList.contains(str(name)))
     def focus(self): self._obj.focus()
     def blur(self): self._obj.blur()
     def click(self): self._obj.click()
     def remove(self): self._obj.remove()
     def clear(self): js.pytmlInstance.clear_element(self._obj)
     def scroll_to(self, x=0, y=0, behavior='auto'): js.pytmlInstance.scroll_element(self._obj, x, y, behavior)
     def into_view(self, **kwargs): self._obj.scrollIntoView(kwargs)
     def set_style(self, name, value): self._obj.style[str(name)] = str(value)
     def get_style(self, name): return str(js.pytmlInstance.get_style(self._obj, str(name)))
     def emit(self, name, detail=None): js.pytmlInstance.emit(self._obj, str(name), detail or {})
 
     def on(self, event, callback, options=None):
         def handler(raw):
             try:
                 normalized = js.pytmlInstance.api_event(raw).to_py()
                 result = callback(Event(normalized, raw))
                 if asyncio.iscoroutine(result):
                     asyncio.ensure_future(result)
                 return None
             except Exception:
                 import traceback
                 js.pytmlInstance.addError(traceback.format_exc())
                 return None
         proxy = create_proxy(handler)
         self._obj.addEventListener(str(event), proxy, options)
         _callbacks.append((self._obj, str(event), callback, proxy))
 
         def off():
             try:
                 self._obj.removeEventListener(str(event), proxy, options)
             finally:
                 try: proxy.destroy()
                 except Exception: pass
                 try: _callbacks.remove((self._obj, str(event), callback, proxy))
                 except ValueError: pass
         return off
 
     def off(self, event, callback):
         keep = []
         for obj, ev, cb, proxy in _callbacks:
             if obj is self._obj and ev == str(event) and cb is callback:
                 try: obj.removeEventListener(ev, proxy)
                 except Exception: pass
                 try: proxy.destroy()
                 except Exception: pass
             else:
                 keep.append((obj, ev, cb, proxy))
         _callbacks[:] = keep
 
     def on_click(self, callback, options=None): return self.on('click', callback, options)
     def on_input(self, callback, options=None): return self.on('input', callback, options)
     def on_change(self, callback, options=None): return self.on('change', callback, options)
     def on_keydown(self, callback, options=None): return self.on('keydown', callback, options)
     def on_keyup(self, callback, options=None): return self.on('keyup', callback, options)
     def on_scroll(self, callback, options=None): return self.on('scroll', callback, options)
     def play(self): return self._obj.play()
     def pause(self): return self._obj.pause()
     def request_fullscreen(self): return self._obj.requestFullscreen()
     def canvas_context(self, kind='2d'): return self._obj.getContext(str(kind))
 
 class Joystick(Element):
     @property
     def joystick_x(self): return float(js.pytmlInstance.joystick_state(self._obj)['x'])
     @property
     def joystick_y(self): return float(js.pytmlInstance.joystick_state(self._obj)['y'])
     @property
     def magnitude(self): return float(js.pytmlInstance.joystick_state(self._obj)['magnitude'])
     @property
     def angle(self): return float(js.pytmlInstance.joystick_state(self._obj)['angle'])
     @property
     def active(self): return bool(js.pytmlInstance.joystick_state(self._obj)['active'])
 
 
 def element(target): return Element(js.pytmlInstance.element(target).element)
 def get(target): return element(target)
 def query(selector): return element(selector)
 def query_all(selector): return [Element(x) for x in js.document.querySelectorAll(str(selector))]
 def joystick(target): return Joystick(js.pytmlInstance.makeJoystick(target).element)
 async def sleep(ms): await js.pytmlInstance.sleep(int(ms))
 def timeout(callback, ms): 
     from pyodide.ffi import create_proxy
     return js.pytmlInstance.setTimeout(create_proxy(callback), int(ms))
 def interval(callback, ms): 
     from pyodide.ffi import create_proxy
     return js.pytmlInstance.setInterval(create_proxy(callback), int(ms))
 def clear_timeout(timer_id): return js.pytmlInstance.clearTimeout(int(timer_id))
 def clear_interval(timer_id): return js.pytmlInstance.clearInterval(int(timer_id))
 async def clipboard_copy(text): await js.pytmlInstance.clipboard_write(str(text))
 async def clipboard_read(): return await js.pytmlInstance.clipboard_read()
 def alert(message): return js.pytmlInstance.alert(str(message))
 def confirm(message): return bool(js.pytmlInstance.confirm(str(message)))
 def download(data, filename, mime='text/plain;charset=utf-8'): return js.pytmlInstance.download(data, filename, mime)
 def gamepads(): return js.pytmlInstance.gamepads()
 def storage_get(key, fallback=None): return js.pytmlInstance.storage_get(key, fallback)
 def storage_set(key, value): return js.pytmlInstance.storage_set(key, value)
 def storage_remove(key): return js.pytmlInstance.storage_remove(key)
 def escape(text):
     """Safely escape HTML characters (<, >, &) from user input."""
     return _html_escape.escape(str(text))
 def install(requirements, **kwargs):
     import micropip
     return micropip.install(requirements, **kwargs)
 
 version = '2.5.1'
 pyodide_version = '314.0.7'
 
 def _bind_all_dom(namespace):
     elements = {}
     for obj in js.document.querySelectorAll('[id]'):
         name = str(obj.id)
         if name.isidentifier():
             elements[name] = Element(obj)
             if name not in namespace:
                 namespace[name] = elements[name]
     class _Elements:
         def __getattr__(self, name):
             try:
                 return elements[name]
             except KeyError as exc:
                 raise AttributeError(name) from exc
         def __getitem__(self, name):
             try:
                 return elements[str(name)]
             except KeyError as exc:
                 raise KeyError(name) from exc
     namespace['elements'] = _Elements()
     namespace['document'] = js.document
     namespace['window'] = js.window
     namespace['console'] = js.console
     namespace['pytml'] = __import__('pytml')
 `;
 
   function installEarlyPythonHide() {
     if (typeof document === 'undefined') return;
     if (document.getElementById('pytml-early-hide')) return;
     const style = document.createElement('style');
     style.id = 'pytml-early-hide';
     style.textContent = 'py,py0,py1,py2,py3,py4,py5,py6,py7,py8,py9,py10,py11,py12,py13,py14,py15,py16,py17,py18,py19,py20,py21,py22,py23,py24,py25,py26,py27,py28,py29,py30,py31,py32,py33,py34,py35,py36,py37,py38,py39,py40,py41,py42,py43,py44,py45,py46,py47,py48,py49,py50,py51,py52,py53,py54,py55,py56,py57,py58,py59,py60,py61,py62,py63,py64,py65,py66,py67,py68,py69,py70,py71,py72,py73,py74,py75,py76,py77,py78,py79,py80,py81,py82,py83,py84,py85,py86,py87,py88,py89,py90,py91,py92,py93,py94,py95,py96,py97,py98,py99,py100 { display:none !important; }';
     (document.head || document.documentElement).appendChild(style);
   }
 
   function normalizeEvent(event) {
     const target = event?.currentTarget || event?.target || null;
     const rect = target?.getBoundingClientRect ? target.getBoundingClientRect() : null;
     const detail = event?.detail || {};
     return {
       type: event?.type || '',
       x: Number(event?.clientX ?? detail.x ?? 0),
       y: Number(event?.clientY ?? detail.y ?? 0),
       dx: Number(event?.movementX ?? detail.dx ?? 0),
       dy: Number(event?.movementY ?? detail.dy ?? 0),
       deltaX: Number(event?.deltaX ?? 0),
       deltaY: Number(event?.deltaY ?? 0),
       key: event?.key || '',
       code: event?.code || '',
       button: Number(event?.button ?? 0),
       buttons: Number(event?.buttons ?? 0),
       pointerId: Number(event?.pointerId ?? 0),
       pointerType: event?.pointerType || '',
       value: event?.target?.value ?? '',
       checked: !!event?.target?.checked,
       scrollTop: Number(event?.target?.scrollTop ?? 0),
       scrollLeft: Number(event?.target?.scrollLeft ?? 0),
       ctrlKey: !!event?.ctrlKey,
       shiftKey: !!event?.shiftKey,
       altKey: !!event?.altKey,
       metaKey: !!event?.metaKey,
       width: Number(rect?.width ?? 0),
       height: Number(rect?.height ?? 0),
       joystick_x: detail.x,
       joystick_y: detail.y,
       magnitude: detail.magnitude,
       angle: detail.angle,
       active: detail.active
     };
   }
 
   // Inline UI syntax supported inside <py>, <py1>, <py2>, ... blocks.
   // These tags are converted to real browser elements before the Python is
   // sent to Pyodide. Non-UI text nodes are preserved, including indentation.
   const PY_INLINE_UI = /^(btn|input|txt)(\d+)$/i;
 
   function copyInlineAttributes(source, target, kind) {
     for (const attr of Array.from(source.attributes || [])) {
       const name = attr.name.toLowerCase();
       if (name === 'id') continue;
       if (kind === 'txt' && name === 'type') continue;
       target.setAttribute(attr.name, attr.value);
     }
   }
 
   class Pytml {
     constructor(options = {}) {
       this.version = VERSION;
       this.pyodideVersion = PYODIDE_VERSION;
       this.options = {
         pyodideVersion: PYODIDE_VERSION,
         pyodideIndexURL: PYODIDE_INDEX,
         autoOutput: options.autoOutput === true,
         loadPackagesFromImports: options.loadPackagesFromImports !== false,
         ...options
       };
       this.pyodide = null;
       this.outputContainer = null;
       this.statusElement = null;
       this.ready = false;
       this.readyPromise = null;
       this.programs = new Map();
       this._callbackRegistry = new Map();
       this._intervals = new Map();
       this._timeouts = new Map();
       this._joystickState = new WeakMap();
     }
 
     async start() {
       if (!this.readyPromise) this.readyPromise = this._start();
       return this.readyPromise;
     }
 
     async _start() {
       preconnect();
       installBootState();
       this.installStyles();
 
       // Always use the remote Pyodide CDN from file:// pages. This avoids
       // trying to resolve Pyodide assets relative to a local file origin.
       const indexURL = IS_FILE_PROTOCOL
         ? PYODIDE_INDEX
         : this.options.pyodideIndexURL;
 
       await this.loadPyodideScript();
       this.pyodide = await global.loadPyodide({ indexURL });
       global.pyodide = this.pyodide;
       global.pytmlInstance = this;
       global.pytml = this;
       await this.installPythonModule();
       await this.setupPythonEnvironment();
       this.ready = true;
       await this.runAllPythonScripts();
       clearBootState();
       document.dispatchEvent(new CustomEvent('pytml:ready', { detail: this }));
       return this;
     }
 
     installStyles() {
       if (document.getElementById('pytml-runtime-style')) return;
       const style = document.createElement('style');
       style.id = 'pytml-runtime-style';
       style.textContent = DEFAULT_STYLE;
       document.head.appendChild(style);
     }
 
     createOutputContainer() {
       let container = document.getElementById('pytml-output');
       if (!container) {
         container = document.createElement('div');
         container.id = 'pytml-output';
         const first = this.findPythonBlocks()[0]?.element;
         if (first?.parentNode) first.parentNode.insertBefore(container, first);
         else document.body.insertBefore(container, document.body.firstChild);
       }
       container.classList.add('pytml-output');
       this.outputContainer = container;
     }
 
     async loadPyodideScript() {
       await preloadPyodideScript();
     }
 
     async installPythonModule() {
       this.pyodide.globals.set('_pytml_module_source', PYTHON_MODULE);
       await this.pyodide.runPythonAsync(`
 import sys, types
 _pytml_module = types.ModuleType('pytml')
 exec(_pytml_module_source, _pytml_module.__dict__)
 sys.modules['pytml'] = _pytml_module
 `);
       this.pyodide.globals.delete('_pytml_module_source');
     }
 
     async setupPythonEnvironment() {
       const bootstrap = String.raw`
 import sys, ast, builtins, pytml
 import js
 
 class _OutputRedirect:
     def __init__(self, error=False): self.error = error
     def write(self, text):
         if text: js.pytmlInstance.addOutput(str(text), self.error)
     def flush(self): pass
 
 sys.stdout = _OutputRedirect(False)
 
 async def _pytml_input(prompt=""):
     return await js.pytmlInstance.getUserInput(str(prompt))
 
 builtins.input = _pytml_input
 
 class _InputTransformer(ast.NodeTransformer):
     def visit_Call(self, node):
         self.generic_visit(node)
         if isinstance(node.func, ast.Name) and node.func.id == "input":
             return ast.copy_location(ast.Await(value=node), node)
         return node
 
 def _pytml_transform_tree(source):
     tree = ast.parse(source)
     tree = _InputTransformer().visit(tree)
     ast.fix_missing_locations(tree)
     return tree
 
 async def _pytml_run_source(source):
     source = str(source)
     tree = _pytml_transform_tree(source)
     await js.pytmlInstance.prepare_python_globals()
     code = compile(tree, "<pytml>", "exec", flags=ast.PyCF_ALLOW_TOP_LEVEL_AWAIT)
     result = eval(code, globals(), globals())
     if result is not None:
         import inspect
         if inspect.isawaitable(result):
             await result
 `;
       await this.pyodide.runPythonAsync(bootstrap);
     }
 
     preprocessPythonBlock(el) {
       if (el.__pytmlPreprocessed) return el.__pytmlPreprocessed;
 
       const declarations = [];
       let code = '';
 
       const visit = (node) => {
         for (const child of Array.from(node.childNodes || [])) {
           if (child.nodeType === Node.TEXT_NODE) {
             code += child.nodeValue || '';
             continue;
           }
           if (child.nodeType !== Node.ELEMENT_NODE) continue;
 
           const tag = child.tagName?.toLowerCase?.() || '';
           const match = tag.match(PY_INLINE_UI);
           if (match) {
             declarations.push({
               node: child,
               kind: match[1].toLowerCase(),
               id: `${match[1].toLowerCase()}${match[2]}`,
               content: child.textContent || ''
             });
             continue;
           }
 
           // Ordinary wrapper elements contribute their text to Python source.
           visit(child);
         }
       };
 
       visit(el);
 
       if (declarations.length) {
         const fragment = document.createDocumentFragment();
         for (const declaration of declarations) {
           const { node, kind, id, content } = declaration;
           const existing = document.getElementById(id);
           if (existing && existing !== el && !existing.hasAttribute('data-pytml-generated')) {
             throw new Error(`Pytml UI id "${id}" already exists outside its <pyN> block.`);
           }
 
           const generated = document.createElement(kind === 'btn' ? 'button' : 'input');
           if (kind === 'txt' || (kind === 'input' && !node.hasAttribute('type'))) generated.type = 'text';
           copyInlineAttributes(node, generated, kind);
           generated.id = id;
           generated.setAttribute('data-pytml-generated', '');
 
           if (kind === 'btn') {
             generated.type = node.getAttribute('type') || 'button';
             generated.textContent = content;
           } else if (content.trim()) {
             generated.placeholder = content.trim();
           }
 
           fragment.appendChild(generated);
           node.remove();
         }
         if (el.parentNode) el.parentNode.insertBefore(fragment, el);
       }
 
       const processed = {
         code,
         declarations: declarations.map(({ kind, id }) => ({ kind, id }))
       };
       el.__pytmlPreprocessed = processed;
       return processed;
     }
 
     findPythonBlocks() {
       const result = [];
       document.querySelectorAll('*').forEach((el) => {
         const tag = el.tagName?.toLowerCase?.() || '';
         if (PY_BLOCK.test(tag)) {
           el.setAttribute('data-pytml-hidden', '');
           el.hidden = true;
           const processed = this.preprocessPythonBlock(el);
           result.push({
             element: el,
             id: tag,
             src: el.getAttribute('src'),
             code: processed.code,
             ui: processed.declarations
           });
         }
       });
       document.querySelectorAll('script[type="text/python"]').forEach((el, index) => {
         result.push({
           element: el,
           id: (el.getAttribute('data-id') || el.id || `script-${index + 1}`).toLowerCase(),
           src: el.getAttribute('src'),
           code: el.textContent,
           ui: []
         });
       });
       return result;
     }
 
     async runAllPythonScripts() {
       for (const block of this.findPythonBlocks()) {
         if (block.src) {
           const resolved = new URL(block.src, document.baseURI);
           if (location.protocol === 'file:' && resolved.protocol === 'file:') {
             throw new Error(`Pytml cannot read a separate local Python file ("${block.src}") from file:// because browsers block local-file fetches. Use inline <py> / <pyN> code or an HTTPS src.`);
           }
           const response = await fetch(resolved.href, {
             credentials: IS_FILE_PROTOCOL ? 'omit' : 'same-origin',
             mode: 'cors'
           });
           if (!response.ok) throw new Error(`HTTP ${response.status} while loading ${resolved.href}`);
           await this.executePythonCode(await response.text(), block.id);
         } else if (block.code.trim()) {
           await this.executePythonCode(block.code, block.id);
         }
         block.element.setAttribute('data-pytml-hidden', '');
       }
     }
 
     async prepare_python_globals() {
       await this.pyodide.runPythonAsync('from pytml import _bind_all_dom; _bind_all_dom(globals())');
     }
 
     async executePythonCode(source, programId = 'py') {
       if (!this.ready) throw new Error('Pytml is not ready yet.');
       if (this.options.loadPackagesFromImports) {
         try { await this.pyodide.loadPackagesFromImports(source); } catch (_) {}
       }
       this.pyodide.globals.set('_pytml_source', source);
       try {
         await this.pyodide.runPythonAsync('await _pytml_run_source(_pytml_source)');
         this.programs.set(programId, (this.programs.get(programId) || 0) + 1);
       } catch (error) {
         const message = error?.message || String(error);
         this.addError(`Execution error in ${programId}: ${message}`);
         return false;
       } finally {
         this.pyodide.globals.delete('_pytml_source');
       }
     }
 
     element(target) {
       let el = target;
       if (typeof target === 'string') {
         const looksLikeSelector = target.startsWith('#') || target.startsWith('.') || target.includes('[') || target.includes(' ') || target.includes(':');
         el = looksLikeSelector ? document.querySelector(target) : document.getElementById(target);
       }
       if (!el) throw new Error(`Pytml element not found: ${target}`);
       return this.makeElementProxy(el);
     }
 
     makeElementProxy(el) {
       return {
         element: el,
         get value() { return el.value ?? ''; },
         set value(v) { el.value = v == null ? '' : String(v); },
         get text() { return el.textContent ?? ''; },
         set text(v) { el.textContent = v == null ? '' : String(v); },
         get html() { return el.innerHTML ?? ''; },
         set html(v) { el.innerHTML = v == null ? '' : String(v); },
         get checked() { return !!el.checked; },
         set checked(v) { el.checked = !!v; },
         get selected() { return !!el.selected; },
         set selected(v) { el.selected = !!v; },
         get disabled() { return !!el.disabled; },
         set disabled(v) { el.disabled = !!v; },
         get visible() { return getComputedStyle(el).display !== 'none' && getComputedStyle(el).visibility !== 'hidden'; },
         set visible(v) { el.style.display = v ? '' : 'none'; },
         get_style: (name) => getComputedStyle(el)[String(name)],
         set_style: (name, value) => { el.style[String(name)] = String(value); },
         clear: () => { while (el.firstChild) el.removeChild(el.firstChild); if ('value' in el) el.value = ''; },
         scroll_to: (x, y, behavior='auto') => el.scrollTo({ left: Number(x)||0, top: Number(y)||0, behavior }),
         emit: (name, detail={}) => el.dispatchEvent(new CustomEvent(String(name), { detail, bubbles:true })),
         get files() { return [...(el.files || [])].map(f => ({name:f.name,size:f.size,type:f.type,last_modified:f.lastModified})); }
       };
     }
 
     api_event(event) { return normalizeEvent(event); }
     clear_element(el) { while (el.firstChild) el.removeChild(el.firstChild); if ('value' in el) el.value = ''; }
     scroll_element(el, x=0, y=0, behavior='auto') { el.scrollTo({ left:Number(x)||0, top:Number(y)||0, behavior }); }
     get_style(el, name) { return getComputedStyle(el)[name]; }
     emit(el, name, detail={}) { el.dispatchEvent(new CustomEvent(name, { detail, bubbles:true })); }
     sleep(ms) { return new Promise(resolve => setTimeout(resolve, Number(ms)||0)); }
 
     bindPythonCallback(el, event, callback, options=undefined) {
       if (!this._callbackRegistry.has(el)) this._callbackRegistry.set(el, new Map());
       const eventMap = this._callbackRegistry.get(el);
       if (!eventMap.has(event)) eventMap.set(event, []);
       const proxy = this.pyodide.ffi.create_proxy((raw) => {
         try { return callback(normalizeEvent(raw)); }
         catch (error) { this.addError(`Event handler error: ${error.message}`); }
       });
       el.addEventListener(event, proxy, options);
       eventMap.get(event).push({ callback, proxy });
       return () => {
         el.removeEventListener(event, proxy, options);
         try { proxy.destroy(); } catch (_) {}
       };
     }
 
     async getUserInput(prompt) {
       return new Promise((resolve) => {
         if (!this.outputContainer) this.createOutputContainer();
         const box = document.createElement('div');
         box.className = 'pytml-input-container';
         const label = document.createElement('div'); label.className = 'pytml-input-prompt'; label.textContent = prompt || 'Enter value:';
         const input = document.createElement('input'); input.className = 'pytml-input-field'; input.type = 'text'; input.autocomplete = 'off';
         const submit = document.createElement('button'); submit.className = 'pytml-input-submit'; submit.type = 'button'; submit.textContent = 'Submit';
         box.append(label, input, submit); this.outputContainer.appendChild(box);
         let done = false;
         const finish = () => { if (done) return; done = true; const value=input.value; box.remove(); resolve(value); };
         submit.addEventListener('click', finish); input.addEventListener('keydown', e => { if (e.key === 'Enter') finish(); });
         input.focus(); box.scrollIntoView({behavior:'smooth',block:'center'});
       });
     }
 
     addOutput(text, isError=false) {
       if (!this.outputContainer) this.createOutputContainer();
       const line = document.createElement('div');
       line.className = `pytml-line${isError ? ' pytml-error' : ''}`;
       line.textContent = String(text);
       this.outputContainer.appendChild(line);
       this.outputContainer.scrollTop = this.outputContainer.scrollHeight;
     }
 
     addError(text) { this.addOutput(`X ${text}`, true); }
 
     showStatus(message, isError=false) {
       if (!this.statusElement) { this.statusElement=document.createElement('div'); document.body.appendChild(this.statusElement); }
       this.statusElement.className = `pytml-status${isError ? ' error' : ''}`;
       this.statusElement.textContent = String(message);
       this.statusElement.style.display = 'block';
     }
     hideStatus() { if (this.statusElement) { this.statusElement.remove(); this.statusElement=null; } }
 
     setTimeout(fn, ms) {
       const id = window.setTimeout(() => { 
         try { fn(); } catch (e) { this.addError(`Timer error: ${e.message}`); } 
       }, Number(ms)||0);
       this._timeouts.set(id, fn); 
       return id;
     }
 
     setInterval(fn, ms) {
       const id = window.setInterval(() => { 
         try { fn(); } catch (e) { this.addError(`Timer error: ${e.message}`); } 
       }, Number(ms)||0);
       this._intervals.set(id, fn); 
       return id;
     }
     clearTimeout(id) { 
       window.clearTimeout(id); 
       const fn = this._timeouts.get(id);
       if (fn) { 
         try { fn.destroy(); } catch (_) {} 
         this._timeouts.delete(id); 
       }
     }
 
     clearInterval(id) { 
       window.clearInterval(id); 
       const fn = this._intervals.get(id);
       if (fn) { 
         try { fn.destroy(); } catch (_) {} 
         this._intervals.delete(id); 
       }
     }
     clipboard_write(text) {
       if (!navigator.clipboard?.writeText) return Promise.reject(new Error('Clipboard API unavailable'));
       return navigator.clipboard.writeText(String(text));
     }
     clipboard_read() {
       if (!navigator.clipboard?.readText) return Promise.reject(new Error('Clipboard API unavailable'));
       return navigator.clipboard.readText();
     }
     alert(message) { return window.alert(String(message)); }
     confirm(message) { return window.confirm(String(message)); }
     storage_get(key, fallback=null) { return localStorage.getItem(String(key)) ?? fallback; }
     storage_set(key, value) { localStorage.setItem(String(key), String(value)); }
     storage_remove(key) { localStorage.removeItem(String(key)); }
     download(data, filename, mime='text/plain;charset=utf-8') {
       const blob = data instanceof Blob ? data : new Blob([String(data)], { type: mime });
       const url = URL.createObjectURL(blob); const a = document.createElement('a'); a.href=url; a.download=String(filename); a.click();
       setTimeout(() => URL.revokeObjectURL(url), 1000);
     }
 
     makeJoystick(target) {
       const el = this.element(target).element;
       if (el.__pytmlJoystick) return this.makeJoystickProxy(el);
       el.classList.add('pytml-joystick'); el.style.touchAction='none';
       const state={x:0,y:0,magnitude:0,angle:0,active:false}; this._joystickState.set(el,state);
       const knob=document.createElement('div'); knob.className='pytml-joystick-knob'; el.appendChild(knob);
       const move=(ev)=>{
         const r=el.getBoundingClientRect(), cx=r.left+r.width/2, cy=r.top+r.height/2, max=Math.max(1,Math.min(r.width,r.height)/2);
         const dx=ev.clientX-cx, dy=ev.clientY-cy, angle=Math.atan2(dy,dx), magnitude=Math.min(1,Math.hypot(dx,dy)/max);
         state.x=Math.cos(angle)*magnitude; state.y=Math.sin(angle)*magnitude; state.magnitude=magnitude; state.angle=angle; state.active=true;
         knob.style.left=`${50+state.x*35}%`; knob.style.top=`${50+state.y*35}%`;
         el.dispatchEvent(new CustomEvent('joystickmove',{detail:{...state},bubbles:true}));
       };
       const reset=(ev)=>{ state.x=state.y=state.magnitude=state.angle=0; state.active=false; knob.style.left='50%'; knob.style.top='50%'; el.dispatchEvent(new CustomEvent('joystickmove',{detail:{...state},bubbles:true})); try{el.releasePointerCapture?.(ev.pointerId)}catch(_){} };
       el.addEventListener('pointerdown',ev=>{el.setPointerCapture?.(ev.pointerId);move(ev)});
       el.addEventListener('pointermove',ev=>{if(el.hasPointerCapture?.(ev.pointerId))move(ev)});
       el.addEventListener('pointerup',reset); el.addEventListener('pointercancel',reset); el.__pytmlJoystick=true;
       return this.makeJoystickProxy(el);
     }
     makeJoystickProxy(el) {
       const base=this.makeElementProxy(el);
       Object.defineProperties(base, {
         joystick_x:{enumerable:true,get:()=>this._joystickState.get(el)?.x||0},
         joystick_y:{enumerable:true,get:()=>this._joystickState.get(el)?.y||0},
         magnitude:{enumerable:true,get:()=>this._joystickState.get(el)?.magnitude||0},
         angle:{enumerable:true,get:()=>this._joystickState.get(el)?.angle||0},
         active:{enumerable:true,get:()=>this._joystickState.get(el)?.active||false}
       });
       return base;
     }
     joystick_state(el) { return this._joystickState.get(el) || {x:0,y:0,magnitude:0,angle:0,active:false}; }
     gamepads() { return [...(navigator.getGamepads?.()||[])].filter(Boolean).map(g=>({id:g.id,index:g.index,connected:g.connected,buttons:[...g.buttons].map(b=>({pressed:b.pressed,value:b.value})),axes:[...g.axes]})); }
   }
 
   let singleton=null;
   function start(options={}) { if(!singleton) singleton=new Pytml(options); return singleton.start(); }
   async function boot() {
     const run = async () => {
       if (!pageHasPythonBlocks()) return;
       try {
         await start();
       } catch (err) {
         console.error('[PYTML] boot failed:', err);
         failBootState(err?.message || 'Python failed to load. Refresh to retry.');
       }
     };
 
     if (document.readyState === 'loading') {
       document.addEventListener('DOMContentLoaded', run, { once: true });
     } else {
       run();
     }
   }
 
   installEarlyPythonHide();
 
   global.Pytml=Pytml;
   global.PytmlStart=start;
   global.pytml=global.pytml||{start};
   boot();
 })(typeof window!=='undefined'?window:globalThis);