1// @ds-adherence-ignore -- omelette starter scaffold (raw elements/hex/px by design) 2/* BEGIN USAGE */ 3/** 4 * <image-slot> â user-fillable image placeholder. 5 * 6 * Drop this into a deck, mockup, or page wherever a design needs an image. 7 * You control the slot's shape; it sizes to its container by default. When the search_stock_photos tool 8 * is available, prefill the slot by default â write the photo's URL into 9 * src (with credit/credit-href); the user can still fill or replace it 10 * by dragging an image file onto it (or clicking to browse). The dropped 11 * image persists across reloads via a .image-slots.state.json sidecar â 12 * same read-via-fetch / write-via-window.omelette pattern as 13 * design_canvas.jsx, so the filled slot shows on share links, downloaded 14 * zips, and PPTX export. Outside the omelette runtime the slot is read-only. 15 * 16 * The host bridge only allows sidecar writes at the project root, so the 17 * HTML that uses this component is assumed to live at the project root too 18 * (same constraint as design_canvas.jsx). 19 * 20 * Attributes: 21 * id Persistence key. REQUIRED for the drop to survive reload â 22 * every slot on the page needs a distinct id. 23 * shape 'rect' | 'rounded' | 'circle' | 'pill' (default 'rounded') 24 * 'circle' applies 50% border-radius; on a non-square slot 25 * that's an ellipse â set equal width and height for a true 26 * circle. 27 * radius Corner radius in px for 'rounded'. (default 12) 28 * mask Any CSS clip-path value. Overrides `shape` â use this for 29 * hexagons, blobs, arbitrary polygons. 30 * fit Initial framing baseline: cover | contain. (default 'cover') 31 * cover starts the image filling the frame (overflow cropped); 32 * contain starts it fully visible (letterboxed). Either way the 33 * user can always pan/scale from there â double-click, or the 34 * Edit control, enters reframe mode (drag to move, scroll or 35 * corner-handles to scale; Escape / click-out commits). The 36 * crop persists alongside the image in the sidecar. 37 * placeholder Empty-state caption. (default 'Drop an image') 38 * src Optional initial/fallback image URL. Prefill it with a real 39 * photo via search_stock_photos when that tool is available 40 * (set credit/credit-href from the result). A user drop 41 * overrides it; clearing the drop reveals src again. 42 * credit Attribution text shown as a small overlay at the 43 * bottom-left of the filled slot. REQUIRED whenever src 44 * points at any Unsplash host (images.unsplash.com, 45 * plus.unsplash.com, â¦): an Unsplash src with no credit 46 * renders an error tile INSTEAD of the photo (Unsplash 47 * terms forbid showing their photos unattributed). Use the 48 * exact form 'Photo by {photographer name} on Unsplash' â 49 * the overlay then links the name to credit-href and 50 * 'Unsplash' to the Unsplash homepage, and links back to 51 * unsplash.com automatically get the required utm referral 52 * params appended at render time. The credit belongs to 53 * the src image, so it only shows while src is what's 54 * displayed â a user-dropped image hides it. 55 * credit-href Link for the photographer's name in the credit overlay 56 * (their Unsplash profile URL from the stock-photo search 57 * results). http(s) URLs only â anything else renders the 58 * name as plain text. 59 * 60 * Sizing: the slot fills its container by default (width/height 100%). 61 * Put it in a sized wrapper â absolutely positioned, a grid cell, a fixed 62 * frame â and it takes exactly that box. When the parent's height is 63 * indefinite (ordinary flow), it falls back to full width at a 3:2 aspect 64 * ratio instead of collapsing. In a shrink-to-fit parent (a float, 65 * width:max-content, an unsized absolute wrapper), percentages have 66 * nothing to resolve against â size the slot or its wrapper explicitly 67 * there. For a fixed-size slot, set 68 * width/height on the element itself (inline style), which overrides the 69 * default. When 70 * layering content above a slot (full-bleed layouts), make the overlay 71 * click-through â pointer-events: none on scrims/text plates, re-enabled 72 * on interactive children â so the slot's hover controls stay reachable. 73 * Keep the slot's bottom-left corner visually clear as well: the credit 74 * overlay renders there, and a dark fade or text plate covering it hides 75 * the attribution Unsplash's terms require â end the fade above that 76 * corner, or keep it nearly transparent where the credit sits. 77 * 78 * Usage: 79 * <div style="position:relative;width:100%;height:100%"> <!-- full-bleed: --> 80 * <image-slot id="bg" shape="rect"></image-slot> <!-- fills the wrapper --> 81 * </div> 82 * <image-slot id="hero" style="width:800px;height:450px" shape="rounded" radius="20" 83 * placeholder="Drop a hero image"></image-slot> 84 * <image-slot id="avatar" style="width:120px;height:120px" shape="circle"></image-slot> 85 * <image-slot id="kite" style="width:300px;height:300px" 86 * mask="polygon(50% 0, 100% 50%, 50% 100%, 0 50%)"></image-slot> 87 */ 88/* END USAGE */ 89 90(() => { 91 const STATE_FILE = '.image-slots.state.json'; 92 93 // Unsplash terms require visible attribution wherever their photos 94 // display, and every link back to unsplash.com must carry utm referral 95 // params. Two render-time rules enforce that here: 96 // - an Unsplash-src slot with NO credit attribute renders an error 97 // tile INSTEAD of the photo (an uncredited Unsplash photo on screen 98 // is itself the terms violation, so it never renders bare); 99 // - rendered credit links pointing at unsplash.com get the referral 100 // params appended when absent (credit-href values live in page 101 // content that can't be edited after the fact). 102 // Keep the utm_source value in sync with UTM_SOURCE in 103 // platform/web-agent/unsplash.ts â this file is a project-local 104 // artifact and cannot import it (equality is pinned by tests). 105 const UNSPLASH_HOMEPAGE_HREF = 106 'https://unsplash.com/?utm_source=claude_design&utm_medium=referral'; 107 // Host rule mirrors the hotlink validator that admits Unsplash srcs into 108 // pages in the first place (cdn$ in unsplash.ts: apex or any subdomain) 109 // â Unsplash+ results serve from plus.unsplash.com, not just images.*, 110 // and an admitted-but-uncredited photo must error whatever unsplash 111 // host it rides on. 112 // Trailing-dot FQDNs (images.unsplash.com.) are the same host to the 113 // browser but would miss the regex â strip one dot so the check fails 114 // CLOSED (unrecognized-but-real Unsplash srcs must error, not render). 115 const isUnsplashHost = (u) => { 116 try { 117 return /(^|\.)unsplash\.com$/.test( 118 new URL(u, document.baseURI).hostname.replace(/\.$/, '') 119 ); 120 } catch { 121 return false;
122 } 123 }; 124 // Render-time referral normalization for links back to Unsplash: 125 // appends utm_source/utm_medium when absent, preserves every existing 126 // query param, never overwrites an existing utm_source, and passes 127 // non-Unsplash URLs through untouched. Input is an ABSOLUTE validated 128 // http(s) URL (the credit render funnel resolves + validates first). 129 const withReferral = (href) => { 130 try { 131 const u = new URL(href); 132 if (!/(^|\.)unsplash\.com$/.test(u.hostname.replace(/\.$/, ''))) { 133 return href; 134 } 135 if (!u.searchParams.has('utm_source')) { 136 u.searchParams.set('utm_source', 'claude_design'); 137 } 138 if (!u.searchParams.has('utm_medium')) { 139 u.searchParams.set('utm_medium', 'referral'); 140 } 141 return u.toString(); 142 } catch (e) { 143 return href; 144 } 145 }; 146 // 2Ã a ~600px slot in a 1920-wide deck â retina-sharp without making the 147 // sidecar enormous. A 1200px WebP at q=0.85 is ~150-300KB. 148 const MAX_DIM = 1200; 149 // Raster formats only. SVG is excluded (can carry script; createImageBitmap 150 // on SVG blobs is inconsistent). GIF is excluded because the canvas 151 // re-encode keeps only the first frame, so an animated GIF would silently 152 // go still â better to reject than surprise. 153 const ACCEPT = ['image/png', 'image/jpeg', 'image/webp', 'image/avif']; 154 155 // ââ Shared sidecar store ââââââââââââââââââââââââââââââââââââââââââââââââ 156 // One fetch + immediate write-on-change for every <image-slot> on the 157 // page. Reads via fetch() so viewing works anywhere the HTML and sidecar 158 // are served together; writes go through window.omelette.writeFile, which 159 // the host allowlists to *.state.json basenames only. 160 const subs = new Set(); 161 let slots = {}; 162 // ids explicitly cleared before the sidecar fetch resolved â otherwise 163 // the merge below can't tell "never set" from "just deleted" and would 164 // resurrect the sidecar's stale value. 165 const tombstones = new Set(); 166 let loaded = false; 167 let loadP = null; 168 169 function load() { 170 if (loadP) return loadP; 171 loadP = fetch(STATE_FILE) 172 .then((r) => (r.ok ? r.json() : null)) 173 .then((j) => { 174 // Merge: sidecar loses to any in-memory change that raced ahead of 175 // the fetch (drop or clear) so neither is clobbered by hydration. 176 if (j && typeof j === 'object') { 177 const merged = Object.assign({}, j, slots); 178 // A framing-only write that raced ahead of hydration must not 179 // drop a user image that's only on disk â inherit u from the 180 // sidecar for any in-memory entry that lacks one. 181 for (const k in slots) { 182 if (merged[k] && !merged[k].u && j[k]) { 183 merged[k].u = typeof j[k] === 'string' ? j[k] : j[k].u; 184 } 185 } 186 for (const id of tombstones) delete merged[id]; 187 slots = merged; 188 } 189 tombstones.clear(); 190 }) 191 .catch(() => {}) 192 .then(() => { loaded = true; subs.forEach((fn) => fn()); }); 193 return loadP; 194 } 195 196 // Serialize writes so two near-simultaneous drops on different slots 197 // can't reorder at the backend and leave the sidecar with only the 198 // first. A save requested mid-flight just marks dirty and re-fires on 199 // completion with the then-current slots. 200 let saving = false; 201 let saveDirty = false; 202 // Unload-time flush: save()'s serialization defers a mid-RTT re-fire to a 203 // .then that never runs in an unloading document, silently dropping a 204 // pagehide commit. Post the current slots immediately instead â content 205 // is a superset snapshot of any in-flight save's, the write is a 206 // whole-file last-writer-wins replace, and postMessage FIFO delivers it 207 // to the host after the in-flight one, so a backend-side reorder at 208 // worst reproduces the dropped-commit outcome this flush improves on. 209 // Guarded on the initial sidecar read: pre-hydration slots can miss 210 // other slots' persisted entries, and flushing it would clobber them â 211 // that narrow case stays best-effort (the in-memory merge in load() 212 // cannot happen in an unloading document anyway). 213 function flushNow() { 214 if (!loaded) return; 215 const w = window.omelette && window.omelette.writeFile; 216 if (!w) return; 217 try { Promise.resolve(w(STATE_FILE, JSON.stringify(slots))).catch(() => {}); } catch (e) {} 218 } 219 function save() { 220 if (saving) { saveDirty = true; return; } 221 const w = window.omelette && window.omelette.writeFile; 222 if (!w) return; 223 saving = true; 224 Promise.resolve(w(STATE_FILE, JSON.stringify(slots))) 225 .catch(() => {}) 226 .then(() => { saving = false; if (saveDirty) { saveDirty = false; save(); } }); 227 } 228 229 const S_MAX = 5; 230 const clampS = (s) => Math.max(1, Math.min(S_MAX, s)); 231 232 // Normalize a stored slot value. Pre-reframe sidecars stored a bare 233 // data-URL string; newer ones store {u, s, x, y}. Either shape is valid. 234 function getSlot(id) { 235 const v = slots[id]; 236 if (!v) return null; 237 return typeof v === 'string' ? { u: v, s: 1, x: 0, y: 0 } : v; 238 } 239 240 function setSlot(id, val) { 241 if (!id) return; 242 if (val) { slots[id] = val; tombstones.delete(id); } 243 else { delete slots[id]; if (!loaded) tombstones.add(id); }
244 subs.forEach((fn) => fn()); 245 // A drop is rare + high-value â write immediately so nav-away can't lose 246 // it. Gate on the initial read so we don't overwrite a sidecar we haven't 247 // merged yet; the merge in load() keeps this change once the read lands. 248 if (loaded) save(); else load().then(save); 249 } 250 251 // ââ Image downscale âââââââââââââââââââââââââââââââââââââââââââââââââââââ 252 // Encode through a canvas so the sidecar carries resized bytes, not the 253 // raw upload. Longest side is capped at 2Ã the slot's rendered width 254 // (retina) and at MAX_DIM. WebP keeps alpha and is ~10Ã smaller than PNG 255 // for photos, so there's no need for per-image format picking. 256 async function toDataUrl(file, targetW) { 257 const bitmap = await createImageBitmap(file); 258 try { 259 const cap = Math.min(MAX_DIM, Math.max(1, Math.round(targetW * 2)) || MAX_DIM); 260 const scale = Math.min(1, cap / Math.max(bitmap.width, bitmap.height)); 261 const w = Math.max(1, Math.round(bitmap.width * scale)); 262 const h = Math.max(1, Math.round(bitmap.height * scale)); 263 const canvas = document.createElement('canvas'); 264 canvas.width = w; canvas.height = h; 265 canvas.getContext('2d').drawImage(bitmap, 0, 0, w, h); 266 return canvas.toDataURL('image/webp', 0.85); 267 } finally { 268 bitmap.close && bitmap.close(); 269 } 270 } 271 272 // ââ Custom element ââââââââââââââââââââââââââââââââââââââââââââââââââââââ 273 const stylesheet = 274 // Fill the container by default: slots are usually placed inside a 275 // sized wrapper (a hero frame, a grid cell, an inset:0 layer) and are 276 // expected to take that box â a fixed intrinsic size would render as 277 // a small tile in the corner of a full-bleed wrapper instead. 278 // aspect-ratio is the companion fallback that keeps a bare slot 279 // visible when the parent's height is indefinite: height:100% 280 // resolves to auto there, and the ratio then derives height from 281 // width instead of letting the slot collapse to zero height. 282 // Explicit width/height on the element override all of this. 283 ':host{display:block;position:relative;' + 284 ' font:13px/1.3 system-ui,-apple-system,sans-serif;color:rgba(0,0,0,.55);' + 285 ' width:100%;height:100%;aspect-ratio:3/2}' + 286 '.frame{position:absolute;inset:0;overflow:hidden;background:rgba(0,0,0,.04)}' + 287 // .frame img (clipped) and .spill (unclipped ghost + handles) share the 288 // same left/top/width/height in frame-%, computed by _applyView(), so the 289 // inside-mask crop and the outside-mask spill stay pixel-aligned. 290 '.frame img{position:absolute;max-width:none;transform:translate(-50%,-50%);' + 291 ' -webkit-user-drag:none;user-select:none;touch-action:none}' + 292 // Reframe mode (double-click): the full image spills past the mask. The 293 // spill layer is sized to the IMAGE bounds so its corners are where the 294 // resize handles belong. The ghost <img> inside is translucent; the real 295 // clipped <img> underneath shows the opaque in-mask crop. 296 // popover=manual promotes the spill to the top layer on reframe, so it is 297 // not clipped by any overflow:hidden / clip-path / scroll-container 298 // ancestor (a plain z-index can't escape overflow clipping). UA popover 299 // defaults (inset:0;margin:auto) are reset; _applyView sets viewport px. 300 '.spill{position:fixed;margin:0;inset:auto;border:0;padding:0;background:transparent;' + 301 ' overflow:visible;transform:translate(-50%,-50%);z-index:1;cursor:grab;touch-action:none}' + 302 ':host([data-panning]) .spill{cursor:grabbing}' + 303 '.spill .ghost{position:absolute;inset:0;width:100%;height:100%;opacity:.35;' + 304 ' pointer-events:none;-webkit-user-drag:none;user-select:none;' + 305 ' box-shadow:0 0 0 1px rgba(0,0,0,.2),0 12px 32px rgba(0,0,0,.2)}' + 306 '.spill .handle{position:absolute;width:12px;height:12px;border-radius:50%;' + 307 ' background:#fff;box-shadow:0 0 0 1.5px #c96442,0 1px 3px rgba(0,0,0,.3);' + 308 ' transform:translate(-50%,-50%)}' + 309 '.spill .handle[data-c=nw]{left:0;top:0;cursor:nwse-resize}' + 310 '.spill .handle[data-c=ne]{left:100%;top:0;cursor:nesw-resize}' + 311 '.spill .handle[data-c=sw]{left:0;top:100%;cursor:nesw-resize}' + 312 '.spill .handle[data-c=se]{left:100%;top:100%;cursor:nwse-resize}' + 313 ':host([data-reframe]){z-index:10}' + 314 ':host([data-reframe]) .frame{box-shadow:0 0 0 2px #c96442}' + 315 '.empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;' + 316 ' justify-content:center;gap:6px;text-align:center;padding:12px;box-sizing:border-box;' + 317 ' cursor:pointer;user-select:none}' + 318 '.empty svg{opacity:.45}' + 319 '.empty .cap{max-width:90%;font-weight:500;letter-spacing:.01em}' + 320 '.empty .sub{font-size:11px}' + 321 '.empty .sub u{text-underline-offset:2px;text-decoration-color:rgba(0,0,0,.25)}' + 322 '.empty:hover .sub u{color:rgba(0,0,0,.75);text-decoration-color:currentColor}' + 323 ':host([data-over]) .frame{outline:2px solid #c96442;outline-offset:-2px;' + 324 ' background:rgba(201,100,66,.10)}' + 325 '.ring{position:absolute;inset:0;pointer-events:none;border:1.5px dashed rgba(0,0,0,.25);' + 326 ' transition:border-color .12s}' + 327 ':host([data-over]) .ring{border-color:#c96442}' + 328 ':host([data-filled]) .ring{display:none}' + 329 // Controls overlay INSIDE the frame, pinned to the top-right corner, so 330 // a full-bleed slot in an overflow:hidden container still shows them 331 // (the old below-mask placement got clipped). Credit sits bottom-left, 332 // so top-right avoids collision. The blurred pill background keeps them 333 // legible over the image. 334 // The UA [popover] base rule styles the element in EVERY state (only 335 // display:none is gated on :not(:popover-open), and the display:flex 336 // below overrides that) â so the UA resets live HERE, like .spill's,
337 // or the ordinary hover-state strip renders as a bordered Canvas box 338 // centered by margin:auto. inset:auto precedes top/right (shorthand). 339 '.ctl{position:absolute;inset:auto;top:8px;right:8px;margin:0;border:0;padding:0;' + 340 ' background:transparent;overflow:visible;' + 341 ' display:flex;gap:6px;opacity:0;pointer-events:none;transition:opacity .12s;z-index:2;' + 342 ' white-space:nowrap}' + 343 // While reframing, the spill owns the top layer and would swallow every 344 // click on the in-frame controls. Promoting .ctl into the top layer 345 // ABOVE the spill (shown after it â later popovers stack higher) keeps 346 // Edit-as-toggle and Replace clickable mid-reframe. _applyView pins it 347 // to the frame's top-right in viewport px (translateX(-100%) 348 // right-aligns against the computed left edge); inset:auto clears the 349 // base rule's top/right so the inline left/top position it alone. 350 '.ctl:popover-open{position:fixed;inset:auto;transform:translateX(-100%)}' + 351 ':host([data-filled][data-editable]:hover) .ctl,:host([data-reframe]) .ctl' + 352 ' {opacity:1;pointer-events:auto}' + 353 '.ctl button{appearance:none;border:0;border-radius:6px;padding:5px 10px;cursor:pointer;' + 354 ' background:rgba(0,0,0,.65);color:#fff;font:11px/1 system-ui,-apple-system,sans-serif;' + 355 ' backdrop-filter:blur(6px)}' + 356 '.ctl button:hover{background:rgba(0,0,0,.8)}' + 357 '.err{position:absolute;left:8px;bottom:8px;right:8px;color:#b3261e;font-size:11px;' + 358 ' background:rgba(255,255,255,.85);padding:4px 6px;border-radius:5px;pointer-events:none}' + 359 '.credit{position:absolute;left:6px;bottom:6px;max-width:calc(100% - 12px);display:none;' + 360 ' padding:3px 7px;border-radius:5px;background:rgba(0,0,0,.55);color:#fff;' + 361 ' font:10px/1.2 system-ui,-apple-system,sans-serif;text-decoration:none;' + 362 ' white-space:nowrap;overflow:hidden;text-overflow:ellipsis;backdrop-filter:blur(6px)}' + 363 // The credit is a SPAN holding one or two <a>s (Unsplash's prescribed 364 // form links the photographer AND Unsplash) â anchors style inline so 365 // the overlay reads as one line of text. 366 '.credit a{color:inherit;text-decoration:none}' + 367 '.credit a:hover,.credit a:focus-visible{text-decoration:underline}' + 368 ':host([data-filled][data-credit]) .credit{display:block}' + 369 // Exports must ship JUST the image â no hover controls, no credit chip 370 // (the host marks <html data-om-exporting> for the capture window; the 371 // page-level hide script can't reach shadow DOM, this rule can). 372 ':host-context([data-om-exporting]) .ctl,' + 373 ':host-context([data-om-exporting]) .credit{display:none !important}' + 374 // Attribution error tile: REPLACES the photo when an Unsplash src has 375 // no credit attribute â rendering the photo uncredited is the terms 376 // violation, so the photo must not appear at all. 377 // Calm and neutral on purpose (review feedback): the tile informs the 378 // user; the fix instructions are machine-facing (usage docblock, tool 379 // description, and the turn-end scan's bounce copy name the attributes 380 // for the agent). 381 '.attr-error{position:absolute;inset:0;display:none;flex-direction:column;align-items:center;' + 382 ' justify-content:center;gap:6px;text-align:center;padding:12px;box-sizing:border-box;' + 383 ' background:#f2f1ef;color:#6e6c66;user-select:none;' + 384 ' font:13px/1.45 system-ui,-apple-system,sans-serif}' + 385 '.attr-error svg{opacity:.55}' + 386 '.attr-error .cap{max-width:92%;font-weight:500;letter-spacing:.01em}' + 387 ':host([data-attribution-error]) .attr-error{display:flex}' + 388 ':host([data-attribution-error]) .ring{display:none}'; 389 390 const icon = 391 '<svg width="28" height="28" viewBox="0 0 24 24" fill="none" stroke="currentColor" ' + 392 'stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">' + 393 '<rect x="3" y="3" width="18" height="18" rx="2"/><circle cx="8.5" cy="8.5" r="1.5"/>' + 394 '<path d="m21 15-5-5L5 21"/></svg>'; 395 396 const warnIcon = 397 '<svg width="28" height="28" viewBox="0 0 24 24" fill="none" stroke="currentColor" ' + 398 'stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">' + 399 '<path d="m21.73 18-8-14a2 2 0 0 0-3.46 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3"/>' + 400 '<path d="M12 9v4"/><path d="M12 17h.01"/></svg>'; 401 402 class ImageSlot extends HTMLElement { 403 static get observedAttributes() { 404 return ['shape', 'radius', 'mask', 'fit', 'placeholder', 'src', 'id', 'credit', 'credit-href']; 405 } 406
407 /** Duplicate-slide hook (called by deck-stage, see its 408 * _remintDuplicateIds): copy this id's stored image, if any, under a 409 * freshly minted key and return that key â so a duplicated slide's 410 * slot keeps its dropped photo instead of reverting to the 411 * placeholder. 'isFree' is the caller's uniqueness check (document 412 * ids); candidates must ALSO be unused in the sidecar, which can 413 * hold keys from other pages sharing the project root. (An EMPTY 414 * slot on another page leaves no sidecar entry, so its id is not 415 * detectable here â a minted key can collide with it and that slot 416 * would show this photo. Same blast radius as two pages reusing an 417 * id by hand, which the shared sidecar already permits.) Returns null 418 * when no id could be minted (caller strips the id, today's 419 * behavior). */ 420 static cloneSlot(fromId, isFree) { 421 if (typeof fromId !== 'string' || !fromId) return null; 422 // Pre-hydration the store can't veto candidates or source the copy 423 // â degrade to the strip (today's behavior) rather than mint 424 // against keys we can't see yet. Any rendered (= droppable) slot 425 // means load() has already settled. 426 if (!loaded) return null; 427 const stem = fromId.replace(/-\d+$/, '') || fromId; 428 for (let n = 2; n < 100; n++) { 429 const toId = stem + '-' + n; 430 if (toId === fromId) continue; 431 if (slots[toId] !== undefined) { 432 // Reuse a key holding this exact value (bytes AND crop) if no 433 // live element here owns it â a duplicate op the host refused 434 // after minting leaves such a key behind, and reusing keeps 435 // refused retries from accumulating one orphaned copy per 436 // attempt. Full equality (not just bytes) so a byte-identical 437 // key another PAGE owns with its own crop is stepped past, not 438 // adopted or rewritten. (Entries without .u never match.) 439 const prev = getSlot(toId); 440 const cur = getSlot(fromId); 441 if (!(prev && cur && prev.u && prev.u === cur.u && 442 prev.s === cur.s && prev.x === cur.x && prev.y === cur.y && 443 (typeof isFree !== 'function' || isFree(toId)))) continue; 444 return toId; 445 } 446 if (typeof isFree === 'function' && !isFree(toId)) continue; 447 const v = getSlot(fromId); 448 if (v) setSlot(toId, Object.assign({}, v)); 449 return toId; 450 } 451 return null; 452 } 453 454 constructor() { 455 super(); 456 // clonable: rail thumbnails deep-clone slides and carry this shadow 457 // along; reuse an already-cloned root so upgrade-after-clone works. 458 // (Deliberately NOT serializable â a getHTML consumer would embed 459 // multi-MB sidecar data-URLs into serialized page HTML.) 460 const root = this.shadowRoot || 461 this.attachShadow({ mode: 'open', clonable: true }); 462 // .spill and .ctl sit OUTSIDE .frame so overflow:hidden + border-radius 463 // on the frame (circle, pill, rounded) can't clip them. 464 root.innerHTML = 465 '<style>' + stylesheet + '</style>' + 466 '<div class="frame" part="frame">' + 467 ' <img part="image" alt="" draggable="false" style="display:none">' + 468 ' <div class="empty" part="empty">' + icon + 469 ' <div class="cap"></div>' + 470 ' <div class="sub">or <u>browse files</u></div></div>' + 471 ' <div class="attr-error" part="attribution-error">' + warnIcon + 472 ' <div class="cap">This photo needs attribution</div></div>' + 473 ' <div class="ring" part="ring"></div>' + 474 '</div>' + 475 // Outside .frame, like .spill/.ctl â the frame's overflow:hidden + 476 // border-radius/clip-path would cut the credit off on circle/pill/mask. 477 // A SPAN, not an <a>: the prescribed Unsplash credit holds two links 478 // (photographer + Unsplash), built per-render in _render(). 479 '<span class="credit" part="credit"></span>' + 480 '<div class="spill" popover="manual" data-dc-edit-transparent>' + 481 ' <img class="ghost" alt="" draggable="false">' + 482 ' <div class="handle" data-c="nw"></div><div class="handle" data-c="ne"></div>' + 483 ' <div class="handle" data-c="sw"></div><div class="handle" data-c="se"></div>' + 484 '</div>' + 485 // data-dc-edit-transparent: the DC editor's edit-mode picker lets 486 // clicks through for chrome marked with it (EDIT_TRANSPARENT_SEL) 487 // â without it, Replace/Edit clicks in Edit mode are swallowed by 488 // element selection and the controls look dead. 489 '<div class="ctl" popover="manual" data-dc-edit-transparent><button data-act="replace" title="Replace image">Replace</button>' + 490 ' <button data-act="edit" title="Reframe image">Edit</button></div>' + 491 '<input type="file" accept="' + ACCEPT.join(',') + '" hidden>'; 492 this._frame = root.querySelector('.frame'); 493 this._ring = root.querySelector('.ring'); 494 this._img = root.querySelector('.frame img'); 495 this._empty = root.querySelector('.empty'); 496 this._cap = root.querySelector('.cap'); 497 this._sub = root.querySelector('.sub'); 498 this._spill = root.querySelector('.spill'); 499 this._ctl = root.querySelector('.ctl'); 500 this._credit = root.querySelector('.credit'); 501 this._attrError = root.querySelector('.attr-error'); 502 // Credit clicks open the link, not browse/reframe. 503 this._credit.addEventListener('click', (e) => e.stopPropagation()); 504 this._credit.addEventListener('dblclick', (e) => e.stopPropagation()); 505 this._ghost = root.querySelector('.ghost'); 506 this._err = null; 507 this._input = root.querySelector('input'); 508 this._depth = 0; 509 this._gen = 0; 510 this._view = { s: 1, x: 0, y: 0 }; 511 this._subFn = () => this._render(); 512 // Shadow-DOM listeners live with the shadow DOM â bound once here so 513 // disconnect/reconnect (e.g. React remount) doesn't stack handlers. 514 this._empty.addEventListener('click', () => this._input.click()); 515 root.addEventListener('click', (e) => { 516 const act = e.target && e.target.getAttribute && e.target.getAttribute('data-act'); 517 if (!act) return; 518 // The hidden controls are opacity-0 but still tabbable â without 519 // this gate a keyboard user could drive them on a read-only share 520 // link (mirrors the dblclick handler's editable gate). 521 if (!this.hasAttribute('data-editable')) return; 522 if (act === 'replace') { 523 this._exitReframe(true); 524 // Host-owned picker (Unsplash modal; it also offers local import). 525 this.dispatchEvent(new CustomEvent('image-slot:pick', { 526 bubbles: true, composed: true, detail: { id: this.id || null } 527 })); 528 } 529 if (act === 'edit') { 530 if (!this._reframes()) return; 531 if (this.hasAttribute('data-reframe')) this._exitReframe(true); 532 else this._enterReframe(); 533 } 534 }); 535 this._input.addEventListener('change', () => { 536 const f = this._input.files && this._input.files[0]; 537 if (f) this._ingest(f); 538 this._input.value = ''; 539 });
540 // naturalWidth/Height aren't known until load â re-apply so the cover 541 // baseline is computed from real dimensions, not the 100%Ã100% fallback. 542 this._img.addEventListener('load', () => this._applyView()); 543 // Gated only on editable â any filled slot can be repositioned/scaled, 544 // regardless of fit. Share links (no writeFile) stay static. 545 this.addEventListener('dblclick', (e) => { 546 if (!this.hasAttribute('data-editable') || !this._reframes()) return; 547 e.preventDefault(); 548 if (this.hasAttribute('data-reframe')) this._exitReframe(true); 549 else this._enterReframe(); 550 }); 551 // Pan + resize both originate on the spill layer. A handle pointerdown 552 // drives an aspect-locked resize anchored at the opposite corner; any 553 // other pointerdown on the spill pans. Offsets are frame-% so a 554 // reframed slot survives responsive resize / PPTX export. 555 this._spill.addEventListener('pointerdown', (e) => { 556 if (e.button !== 0 || !this.hasAttribute('data-reframe')) return; 557 e.preventDefault(); 558 e.stopPropagation(); 559 this._spill.setPointerCapture(e.pointerId); 560 const rect = this.getBoundingClientRect(); 561 const fw = rect.width || 1, fh = rect.height || 1; 562 const corner = e.target.getAttribute && e.target.getAttribute('data-c'); 563 let move; 564 if (corner) { 565 // Resize about the OPPOSITE corner. Viewport-px throughout (rect 566 // fw/fh, not clientWidth) so the math survives a transform:scale() 567 // ancestor â deck_stage renders slides scaled-to-fit. 568 const iw = this._img.naturalWidth || 1, ih = this._img.naturalHeight || 1; 569 const contain = (this.getAttribute('fit') || 'cover').toLowerCase() === 'contain'; 570 const base = contain ? Math.min(fw / iw, fh / ih) : Math.max(fw / iw, fh / ih); 571 const sx = corner.includes('e') ? 1 : -1; 572 const sy = corner.includes('s') ? 1 : -1; 573 const s0 = this._view.s; 574 const w0 = iw * base * s0, h0 = ih * base * s0; 575 const cx0 = (50 + this._view.x) / 100 * fw; 576 const cy0 = (50 + this._view.y) / 100 * fh; 577 const ox = cx0 - sx * w0 / 2, oy = cy0 - sy * h0 / 2; 578 const diag0 = Math.hypot(w0, h0); 579 const ux = sx * w0 / diag0, uy = sy * h0 / diag0; 580 move = (ev) => { 581 const proj = (ev.clientX - rect.left - ox) * ux + 582 (ev.clientY - rect.top - oy) * uy; 583 const s = clampS(s0 * proj / diag0); 584 const d = diag0 * s / s0; 585 this._view.s = s; 586 this._view.x = (ox + ux * d / 2) / fw * 100 - 50; 587 this._view.y = (oy + uy * d / 2) / fh * 100 - 50; 588 this._clampView(); 589 this._applyView(); 590 }; 591 } else { 592 this.setAttribute('data-panning', ''); 593 const start = { px: e.clientX, py: e.clientY, x: this._view.x, y: this._view.y }; 594 move = (ev) => { 595 this._view.x = start.x + (ev.clientX - start.px) / fw * 100; 596 this._view.y = start.y + (ev.clientY - start.py) / fh * 100; 597 this._clampView(); 598 this._applyView(); 599 }; 600 } 601 const up = () => { 602 try { this._spill.releasePointerCapture(e.pointerId); } catch {} 603 this._spill.removeEventListener('pointermove', move); 604 this._spill.removeEventListener('pointerup', up); 605 this._spill.removeEventListener('pointercancel', up); 606 this.removeAttribute('data-panning'); 607 this._dragUp = null; 608 }; 609 // Stashed so _exitReframe (Escape / outside-click mid-drag) can 610 // tear the capture + listeners down synchronously. 611 this._dragUp = up; 612 this._spill.addEventListener('pointermove', move); 613 this._spill.addEventListener('pointerup', up); 614 this._spill.addEventListener('pointercancel', up); 615 }); 616 // Wheel zoom stays available inside reframe mode as a trackpad nicety â 617 // zooms toward the cursor (offset' = cursor·(1-k) + offset·k). 618 this.addEventListener('wheel', (e) => { 619 if (!this.hasAttribute('data-reframe')) return; 620 e.preventDefault(); 621 const r = this.getBoundingClientRect(); 622 const cx = (e.clientX - r.left) / r.width * 100 - 50; 623 const cy = (e.clientY - r.top) / r.height * 100 - 50; 624 const prev = this._view.s; 625 const next = clampS(prev * Math.pow(1.0015, -e.deltaY)); 626 if (next === prev) return;
627 const k = next / prev; 628 this._view.s = next; 629 this._view.x = cx * (1 - k) + this._view.x * k; 630 this._view.y = cy * (1 - k) + this._view.y * k; 631 this._clampView(); 632 this._applyView(); 633 }, { passive: false }); 634 } 635 636 connectedCallback() { 637 // Warn once per page â an id-less slot works for the session but 638 // cannot persist, and two id-less slots would share nothing. 639 if (!this.id && !ImageSlot._warned) { 640 ImageSlot._warned = true; 641 console.warn('<image-slot> without an id will not persist its dropped image.'); 642 } 643 this.addEventListener('dragenter', this); 644 this.addEventListener('dragover', this); 645 this.addEventListener('dragleave', this); 646 this.addEventListener('drop', this); 647 subs.add(this._subFn); 648 // The host may inject window.omelette.writeFile AFTER the first render; 649 // re-render on hover so the editable-gated controls reliably appear. 650 this.addEventListener('pointerenter', this._subFn); 651 // width%/height% in _applyView encode the frame aspect at call time â 652 // a host resize (responsive grid, pane divider) would stretch the 653 // image until the next _render. Re-render on size change: _render() 654 // re-seeds _view from stored before clamp/apply, so a shrinkâgrow 655 // cycle round-trips instead of ratcheting x/y toward the narrower 656 // frame's clamp range. 657 this._ro = new ResizeObserver(() => this._render()); 658 this._ro.observe(this); 659 load(); 660 this._render(); 661 } 662 663 disconnectedCallback() { 664 subs.delete(this._subFn); 665 this.removeEventListener('pointerenter', this._subFn); 666 this.removeEventListener('dragenter', this); 667 this.removeEventListener('dragover', this); 668 this.removeEventListener('dragleave', this); 669 this.removeEventListener('drop', this); 670 if (this._ro) { this._ro.disconnect(); this._ro = null; } 671 // commit=false: a disconnect is not a user intent â committing here 672 // would persist whatever half-finished drag a React remount or DOM 673 // splice happened to interrupt. Deliberate exits commit on their own 674 // paths (Escape/click-out/toggle), and unloads commit via pagehide. 675 this._exitReframe(false); 676 } 677 678 _enterReframe() { 679 if (this.hasAttribute('data-reframe')) return; 680 this.setAttribute('data-reframe', ''); 681 this._signalReframe(true); 682 // Best-effort commit when the document unloads mid-reframe (a host 683 // navigation racing the enter signal, a manual reload, tab close): 684 // the sidecar write rides the host bridge, which outlives this 685 // document, so the crop survives even though the mode dies with the 686 // DOM. Held on the instance so _exitReframe detaches exactly what 687 // was attached. 688 this._pagehide = () => { this._exitReframe(true); flushNow(); }; 689 window.addEventListener('pagehide', this._pagehide); 690 // Promote spill to the top layer, then keep it pinned over the frame: 691 // scroll/resize cover the common cases, and a per-frame rect check 692 // catches layout shifts that fire neither (an image above finishing 693 // load, streamed DOM pushing the slot down, an ancestor transform 694 // change) so the overlay can't detach from the frame. 695 try { this._spill.showPopover(); } catch {} 696 // After the spill, so the controls stack above it in the top layer. 697 try { this._ctl.showPopover(); } catch {} 698 this._reposition = () => { if (this.hasAttribute('data-reframe')) this._applyView(); }; 699 window.addEventListener('scroll', this._reposition, true); 700 window.addEventListener('resize', this._reposition); 701 this._lastRect = ''; 702 this._watch = () => { 703 if (!this.hasAttribute('data-reframe')) return; 704 const r = this.getBoundingClientRect(); 705 const key = r.left + ',' + r.top + ',' + r.width + ',' + r.height; 706 if (key !== this._lastRect) { this._lastRect = key; this._applyView(); } 707 this._watchId = requestAnimationFrame(this._watch); 708 }; 709 this._watchId = requestAnimationFrame(this._watch); 710 this._applyView(); 711 // Close on click outside (the spill handler stopPropagation()s so 712 // in-image drags don't reach this) and on Escape. Listeners are held 713 // on the instance so _exitReframe / disconnectedCallback can detach 714 // exactly what was attached.
715 this._outside = (e) => { 716 if (e.composedPath && e.composedPath().includes(this)) return; 717 this._exitReframe(true); 718 }; 719 this._esc = (e) => { if (e.key === 'Escape') this._exitReframe(true); }; 720 document.addEventListener('pointerdown', this._outside, true); 721 document.addEventListener('keydown', this._esc, true); 722 } 723 724 _exitReframe(commit) { 725 if (!this.hasAttribute('data-reframe')) return; 726 if (this._dragUp) this._dragUp(); 727 this.removeAttribute('data-reframe'); 728 this.removeAttribute('data-panning'); 729 if (this._outside) document.removeEventListener('pointerdown', this._outside, true); 730 if (this._esc) document.removeEventListener('keydown', this._esc, true); 731 this._outside = this._esc = null; 732 if (this._reposition) { 733 window.removeEventListener('scroll', this._reposition, true); 734 window.removeEventListener('resize', this._reposition); 735 this._reposition = null; 736 } 737 if (this._watchId) { cancelAnimationFrame(this._watchId); this._watchId = 0; } 738 if (this._pagehide) { 739 window.removeEventListener('pagehide', this._pagehide); 740 this._pagehide = null; 741 } 742 try { this._spill.hidePopover(); } catch {} 743 try { this._ctl.hidePopover(); } catch {} 744 this._ctl.style.left = ''; this._ctl.style.top = ''; 745 if (commit) this._commitView(); 746 this._signalReframe(false); 747 } 748 749 // Reframe state lives only in this DOM until commit, invisible to the 750 // host's dirty signals â announce enter/exit so the host can hold 751 // auto-reloads for exactly the gesture (the guest bundle forwards 752 // image-slot:reframe to the host as imageSlotReframe). Dispatched on 753 // the element (composed, so it escapes shadow roots) while connected; 754 // a disconnected exit (disconnectedCallback) falls back to document so 755 // the host still hears it. 756 _signalReframe(active) { 757 const target = this.isConnected ? this : document; 758 target.dispatchEvent(new CustomEvent('image-slot:reframe', { 759 bubbles: true, composed: true, 760 detail: { active: active, id: this.id || null } 761 })); 762 } 763 764 // Public: host's "Import from computer" calls this to run local browse. 765 openFilePicker() { this._exitReframe(true); this._input.click(); } 766 767 attributeChangedCallback() { if (this.shadowRoot) this._render(); } 768 769 // handleEvent â one listener object for all four drag events keeps the 770 // add/remove symmetric and the depth counter correct. 771 handleEvent(e) { 772 if (e.type === 'dragenter' || e.type === 'dragover') { 773 // Without preventDefault the browser never fires 'drop'. 774 e.preventDefault(); 775 e.stopPropagation(); 776 if (e.dataTransfer) e.dataTransfer.dropEffect = 'copy'; 777 if (e.type === 'dragenter') this._depth++; 778 this.setAttribute('data-over', ''); 779 } else if (e.type === 'dragleave') { 780 // dragenter/leave fire for every descendant crossing â count depth 781 // so hovering the icon inside the empty state doesn't flicker. 782 if (--this._depth <= 0) { this._depth = 0; this.removeAttribute('data-over'); } 783 } else if (e.type === 'drop') { 784 e.preventDefault(); 785 e.stopPropagation(); 786 this._depth = 0; 787 this.removeAttribute('data-over'); 788 const f = e.dataTransfer && e.dataTransfer.files && e.dataTransfer.files[0]; 789 if (f) this._ingest(f); 790 } 791 } 792 793 async _ingest(file) { 794 this._setError(null); 795 if (!file || ACCEPT.indexOf(file.type) < 0) { 796 this._setError('Drop a PNG, JPEG, WebP, or AVIF image.'); 797 return; 798 } 799 // toDataUrl can take hundreds of ms on a large photo. A Clear or a 800 // newer drop during that window would be clobbered when this await 801 // resumes â bump + capture a generation so stale encodes bail. 802 const gen = ++this._gen; 803 try { 804 const w = this.clientWidth || this.offsetWidth || MAX_DIM; 805 const url = await toDataUrl(file, w); 806 if (gen !== this._gen) return; 807 // Only exit reframe once the new image is in hand â a rejected type 808 // or decode failure leaves the in-progress crop untouched. 809 this._exitReframe(false); 810 const val = { u: url, s: 1, x: 0, y: 0 }; 811 setSlot(this.id || '', val); 812 // Keep a session-local copy for id-less slots so the drop still 813 // shows, even though it cannot persist. 814 if (!this.id) { this._local = val; this._render(); } 815 } catch (err) { 816 if (gen !== this._gen) return; 817 this._setError('Could not read that image.'); 818 console.warn('<image-slot> ingest failed:', err); 819 } 820 } 821 822 _setError(msg) { 823 if (this._err) { this._err.remove(); this._err = null; } 824 if (!msg) return; 825 const d = document.createElement('div'); 826 d.className = 'err'; d.textContent = msg; 827 this.shadowRoot.appendChild(d); 828 this._err = d; 829 setTimeout(() => { if (this._err === d) { d.remove(); this._err = null; } }, 3000); 830 } 831 832 // Reframing (pan/resize) is available on any filled slot â the user can 833 // always reposition/scale. `fit` only sets the initial baseline (see 834 // _geom): contain starts fully-visible, cover starts frame-filling. 835 _reframes() { 836 return this.hasAttribute('data-filled'); 837 } 838 839 // Baseline geometry, shared by clamp/apply/resize. `base` is the scale at 840 // view-scale s=1: cover = fill the frame (overflow on the looser axis), 841 // contain = fit fully inside (letterboxed). Zooming a contain image past 842 // s where it overflows naturally becomes a crop. Null until the img has
843 // loaded (naturalWidth is 0 before that) or when the slot has no layout 844 // box â ResizeObserver fires with a 0Ã0 rect under display:none, and 845 // clamping against a degenerate 1Ã1 frame would silently pull the stored 846 // pan toward zero. 847 _geom() { 848 const iw = this._img.naturalWidth, ih = this._img.naturalHeight; 849 const fw = this.clientWidth, fh = this.clientHeight; 850 if (!iw || !ih || !fw || !fh) return null; 851 const contain = (this.getAttribute('fit') || 'cover').toLowerCase() === 'contain'; 852 const base = contain 853 ? Math.min(fw / iw, fh / ih) 854 : Math.max(fw / iw, fh / ih); 855 return { iw, ih, fw, fh, base }; 856 } 857 858 _clampView() { 859 // Pan range on each axis is half the overflow past the frame edge. 860 const g = this._geom(); 861 if (!g) return; 862 const mx = Math.max(0, (g.iw * g.base * this._view.s / g.fw - 1) * 50); 863 const my = Math.max(0, (g.ih * g.base * this._view.s / g.fh - 1) * 50); 864 this._view.x = Math.max(-mx, Math.min(mx, this._view.x)); 865 this._view.y = Math.max(-my, Math.min(my, this._view.y)); 866 } 867 868 _applyView() { 869 const g = this._geom(); 870 // Top-layer controls: pin to the frame's top-right in viewport px 871 // (the same 8px inset as the in-frame layout; unscaled â top-layer UI 872 // reads as chrome, not page content). BEFORE the geometry branch: 873 // placement needs only the frame rect, and a not-yet-loaded or broken 874 // src must not leave the promoted strip floating unpositioned. Gated 875 // on the popover actually being open: without the Popover API, 876 // showPopover() threw (swallowed in _enterReframe), .ctl stays in 877 // its in-frame absolute layout, and viewport-px coordinates would 878 // shove it off-frame â and matches(':popover-open') itself throws 879 // there (unknown pseudo-class), hence the try/catch. 880 if (this.hasAttribute('data-reframe')) { 881 let onTop = false; 882 try { onTop = this._ctl.matches(':popover-open'); } catch {} 883 if (onTop) { 884 const r = this.getBoundingClientRect(); 885 this._ctl.style.left = (r.right - 8) + 'px'; 886 this._ctl.style.top = (r.top + 8) + 'px'; 887 } 888 } 889 if (!g) { 890 // Dimensions not known yet (before img load) â centered fit so there 891 // is no flash of an unpositioned image before the geometry lands. 892 const contain = (this.getAttribute('fit') || 'cover').toLowerCase() === 'contain'; 893 this._img.style.width = '100%'; 894 this._img.style.height = '100%'; 895 this._img.style.left = '50%'; 896 this._img.style.top = '50%'; 897 this._img.style.objectFit = contain ? 'contain' : 'cover'; 898 return; 899 } 900 // Baseline (cover-fill or contain-fit) Ã view scale. Width/height and 901 // left/top are all frame-% â depends only on the frame aspect ratio, so 902 // a responsive resize keeps the same crop. The spill layer mirrors the 903 // same box so its corners = image corners. 904 const k = g.base * this._view.s; 905 const w = (g.iw * k / g.fw * 100) + '%'; 906 const h = (g.ih * k / g.fh * 100) + '%'; 907 const l = (50 + this._view.x) + '%'; 908 const t = (50 + this._view.y) + '%'; 909 this._img.style.width = w; this._img.style.height = h; 910 this._img.style.left = l; this._img.style.top = t; 911 this._img.style.objectFit = ''; 912 if (this.hasAttribute('data-reframe')) { 913 // Top-layer spill: position in viewport px over the frame. The top 914 // layer escapes ancestor transforms entirely, so EVERY term must be 915 // in viewport units: getBoundingClientRect gives the frame's scaled 916 // origin AND size, and the rect/layout ratio rescales the ghost â 917 // sizing from layout px alone renders it 1/scale too large under a 918 // scaled deck slide. Inner ghost + handles stay box-relative. 919 const r = this.getBoundingClientRect(); 920 const sx = g.fw ? r.width / g.fw : 1; 921 const sy = g.fh ? r.height / g.fh : 1; 922 this._spill.style.width = (g.iw * k * sx) + 'px'; 923 this._spill.style.height = (g.ih * k * sy) + 'px'; 924 this._spill.style.left = (r.left + (50 + this._view.x) / 100 * r.width) + 'px'; 925 this._spill.style.top = (r.top + (50 + this._view.y) / 100 * r.height) + 'px'; 926 } 927 } 928 929 _commitView() { 930 const v = { s: this._view.s, x: this._view.x, y: this._view.y }; 931 if (this._userUrl) v.u = this._userUrl; 932 // Framing-only (no u) persists too so an author-src slot remembers its 933 // crop; clearing the sidecar still falls through to src=.
934 if (this.id) setSlot(this.id, v); 935 else { this._local = v; } 936 } 937 938 _render() { 939 // Shape / mask. Presets use border-radius so the dashed ring can 940 // follow the rounded outline; clip-path is only applied for an 941 // explicit `mask` (the ring is hidden there since a rectangle 942 // dashed border chopped by an arbitrary polygon looks broken). 943 const mask = this.getAttribute('mask'); 944 const shape = (this.getAttribute('shape') || 'rounded').toLowerCase(); 945 let radius = ''; 946 if (shape === 'circle') radius = '50%'; 947 else if (shape === 'pill') radius = '9999px'; 948 else if (shape === 'rounded') { 949 const n = parseFloat(this.getAttribute('radius')); 950 radius = (Number.isFinite(n) ? n : 12) + 'px'; 951 } 952 this._frame.style.borderRadius = mask ? '' : radius; 953 this._frame.style.clipPath = mask || ''; 954 this._ring.style.borderRadius = mask ? '' : radius; 955 this._ring.style.display = mask ? 'none' : ''; 956 957 // Controls and reframe entry gate on this so share links stay read-only. 958 const editable = !!(window.omelette && window.omelette.writeFile); 959 this.toggleAttribute('data-editable', editable); 960 this._sub.style.display = editable ? '' : 'none'; 961 962 // Content. The sidecar is also writable by the agent's write_file 963 // tool, so its value isn't guaranteed canvas-originated â only accept 964 // data:image/ URLs from it. The `src` attribute is author-controlled 965 // (Claude wrote it into the HTML) so it passes through unchanged. 966 let stored = this.id ? getSlot(this.id) : this._local; 967 if (stored && stored.u && !/^data:image\//i.test(stored.u)) stored = null; 968 const srcAttr = this.getAttribute('src') || ''; 969 this._userUrl = (stored && stored.u) || null; 970 const url = this._userUrl || srcAttr; 971 // Don't clobber an in-flight reframe with a store-triggered re-render. 972 if (!this.hasAttribute('data-reframe')) { 973 this._view = { 974 s: stored && Number.isFinite(stored.s) ? clampS(stored.s) : 1, 975 x: stored && Number.isFinite(stored.x) ? stored.x : 0, 976 y: stored && Number.isFinite(stored.y) ? stored.y : 0, 977 }; 978 } 979 this._cap.textContent = this.getAttribute('placeholder') || 'Drop an image'; 980 // Toggle via style.display â the [hidden] attribute alone loses to 981 // the display:flex / display:block rules in the stylesheet above. 982 // An Unsplash src with no credit attribute must NOT render â showing 983 // the photo uncredited is the Unsplash-terms violation itself. The 984 // error tile replaces the photo until the credit is written. A 985 // user-dropped image is the user's own content and always renders. 986 // Trimmed: credit is agent/user-editable content, and a whitespace- 987 // only value must count as missing â otherwise it would suppress the 988 // error tile AND render an empty credit box (no text, no links), 989 // exactly the unattributed state this gate exists to prevent. 990 const credit = (this.getAttribute('credit') || '').trim(); 991 const attrError = !!( 992 !credit && !this._userUrl && srcAttr && isUnsplashHost(srcAttr) 993 ); 994 this.toggleAttribute('data-attribution-error', attrError); 995 if (url && !attrError) { 996 if (this._img.getAttribute('src') !== url) { 997 this._img.src = url; 998 this._ghost.src = url; 999 } 1000 this._img.style.display = 'block'; 1001 this._empty.style.display = 'none'; 1002 this.setAttribute('data-filled', ''); 1003 this._clampView(); 1004 this._applyView(); 1005 } else { 1006 this._img.style.display = 'none'; 1007 this._img.removeAttribute('src'); 1008 this._ghost.removeAttribute('src'); 1009 // The error tile owns the blocked-photo state; .empty stays for 1010 // the genuinely-empty slot. 1011 this._empty.style.display = attrError ? 'none' : 'flex'; 1012 this.removeAttribute('data-filled'); 1013 } 1014 1015 // Credit belongs to the author src, so a user drop hides it. 1016 // textContent + the http(s)-only funnel keep external strings inert. 1017 const showCredit = !!(url && credit && !this._userUrl && !attrError); 1018 this._credit.textContent = ''; 1019 if (showCredit) { 1020 // Validate once (resolved against the document, http(s) only), 1021 // then append the terms-required utm referral params to links 1022 // that point back at unsplash.com. 1023 let href = ''; 1024 const rawHref = this.getAttribute('credit-href') || ''; 1025 if (rawHref) { 1026 try { 1027 const u = new URL(rawHref, document.baseURI); 1028 if (u.protocol === 'http:' || u.protocol === 'https:') { 1029 href = withReferral(u.href); 1030 } 1031 } catch {} 1032 } 1033 const mkLink = (text, linkHref) => { 1034 const a = document.createElement('a'); 1035 a.setAttribute('target', '_blank'); 1036 a.setAttribute('rel', 'noopener noreferrer'); 1037 a.setAttribute('href', linkHref); 1038 a.textContent = text; 1039 return a; 1040 }; 1041 // Unsplash's prescribed credit is TWO links â the photographer's 1042 // name to their profile (credit-href) and 'Unsplash' to the 1043 // homepage. Render that split whenever the text has the canonical 1044 // shape; other text keeps the legacy single-link rendering. 1045 const m = /^Photo by (.+) on Unsplash$/.exec(credit); 1046 if (m) { 1047 this._credit.appendChild(document.createTextNode('Photo by ')); 1048 this._credit.appendChild( 1049 href ? mkLink(m[1], href) : document.createTextNode(m[1]) 1050 ); 1051 this._credit.appendChild(document.createTextNode(' on ')); 1052 this._credit.appendChild(mkLink('Unsplash', UNSPLASH_HOMEPAGE_HREF)); 1053 } else if (href) { 1054 this._credit.appendChild(mkLink(credit, href)); 1055 } else { 1056 this._credit.textContent = credit; 1057 } 1058 } 1059 this.toggleAttribute('data-credit', showCredit); 1060 } 1061 } 1062 1063 if (!customElements.get('image-slot')) { 1064 customElements.define('image-slot', ImageSlot); 1065 } 1066})();
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.