| 1 |
/** |
| 2 |
* Desktop Mode — Media Library drag-and-drop enhancement. |
| 3 |
* |
| 4 |
* Injects draggable=true on every .attachment tile in the WordPress |
| 5 |
* Media Library (grid view AND modal view) and wires a dragstart |
| 6 |
* handler that populates DataTransfer with multiple MIME types so the |
| 7 |
* drag works in many drop targets: |
| 8 |
* |
| 9 |
* text/plain — the attachment URL |
| 10 |
* text/uri-list — same URL, standards-compliant |
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* text/html — <img> tag for images, |
| 12 |
* <a> tag for other files, |
| 13 |
* so rich text editors |
| 14 |
* (TinyMCE, contenteditable) |
| 15 |
* natively accept the drop |
| 16 |
* application/x-wp-media-attachment — JSON blob with id, url, |
| 17 |
* title, alt, mime, sizes — |
| 18 |
* for WP-aware drop zones |
| 19 |
* that want the full record |
| 20 |
* |
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* The script is a vanilla IIFE with no build step. It is intentionally |
| 22 |
* defensive: |
| 23 |
* |
| 24 |
* - runs only when wp.media exists, |
| 25 |
* - idempotent (each tile is enhanced at most once), |
| 26 |
* - uses a MutationObserver so tiles added later (user switches |
| 27 |
* folder, scrolls, opens a different media frame) are enhanced |
| 28 |
* too, |
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* - never removes or interferes with WordPress's own click / focus |
| 30 |
* handlers on the tile. |
| 31 |
* |
| 32 |
* @since 0.14.0 |
| 33 |
*/ |
| 34 |
|
| 35 |
( function () { |
| 36 |
'use strict'; |
| 37 |
|
| 38 |
// Runtime guard — wp.media may not be present on every admin page. |
| 39 |
// If it's not, there's nothing to enhance, so we bail silently. |
| 40 |
if ( ! window.wp || ! window.wp.media || typeof window.wp.media.attachment !== 'function' ) { |
| 41 |
// wp.media might be loaded lazily — register a short polling |
| 42 |
// loop that gives up after 3 seconds. In practice it either |
| 43 |
// lands within a few hundred ms or never arrives on this page. |
| 44 |
var tries = 0; |
| 45 |
var poll = setInterval( function () { |
| 46 |
tries++; |
| 47 |
if ( window.wp && window.wp.media && typeof window.wp.media.attachment === 'function' ) { |
| 48 |
clearInterval( poll ); |
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start(); |
| 50 |
} else if ( tries > 30 ) { |
| 51 |
clearInterval( poll ); |
| 52 |
} |
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}, 100 ); |
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return; |
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} |
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start(); |
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|
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// Flag set during our own attachment drags so the capture-phase |
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// blocker below can distinguish between "user is dragging a file |
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// from the OS" (which the WP uploader should handle) and "user is |
| 61 |
// dragging a pre-existing attachment tile" (which the uploader |
| 62 |
// must NOT intercept — otherwise it tries to re-upload it). |
| 63 |
var dragInProgress = false; |
| 64 |
|
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// CSS selectors for the two enhancement paths: |
| 66 |
// - GRID_SELECTOR matches the small tiles in the library grid and |
| 67 |
// in the media modal's left-hand attachments browser. |
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// - DETAIL_SELECTOR matches the BIG preview in the right-hand |
| 69 |
// details sidebar of the media modal, and the dedicated single- |
| 70 |
// attachment edit page at `upload.php?item=ID`. WP renders the |
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// image inside a `.thumbnail` wrapper that has its own click |
| 72 |
// handlers (swap-into-edit, set-as-featured, etc.) — the user |
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// reported that without explicit enhancement here the browser |
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// refuses to start a native drag from the big preview. |
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var GRID_SELECTOR = '.attachment'; |
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var DETAIL_SELECTOR = '.attachment-details, .edit-attachment-frame'; |
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|
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function start() { |
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// Enhance whatever's already on the page. |
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document.querySelectorAll( GRID_SELECTOR ).forEach( enhance ); |
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document.querySelectorAll( DETAIL_SELECTOR ).forEach( enhanceDetail ); |
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|
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// Watch for new tiles + detail panes — the media grid is a |
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// Backbone collection view that appends tiles on scroll, filter |
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// change, or modal open; the detail sidebar swaps its content |
| 86 |
// node every time the user picks a different attachment. |
| 87 |
// MutationObserver on the body catches all of them. |
| 88 |
var observer = new MutationObserver( function ( mutations ) { |
| 89 |
for ( var i = 0; i < mutations.length; i++ ) { |
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var added = mutations[ i ].addedNodes; |
| 91 |
for ( var j = 0; j < added.length; j++ ) { |
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var node = added[ j ]; |
| 93 |
if ( node.nodeType !== 1 ) { |
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continue; |
| 95 |
} |
| 96 |
if ( node.matches && node.matches( GRID_SELECTOR ) ) { |
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enhance( node ); |
| 98 |
} |
| 99 |
if ( node.matches && node.matches( DETAIL_SELECTOR ) ) { |
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enhanceDetail( node ); |
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} |
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if ( node.querySelectorAll ) { |
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node.querySelectorAll( GRID_SELECTOR ).forEach( enhance ); |
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node.querySelectorAll( DETAIL_SELECTOR ).forEach( enhanceDetail ); |
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} |
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} |
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} |
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} ); |
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observer.observe( document.body, { childList: true, subtree: true } ); |
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|
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installUploaderBlock(); |
| 112 |
} |
| 113 |
|
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/** |
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* Install capture-phase interceptors that stop drag events from |
| 116 |
* reaching WordPress's Plupload dropzones while an attachment |
| 117 |
* drag is in flight. Plupload doesn't check DataTransfer.types |
| 118 |
* for the "Files" entry before claiming a drop, so without this |
| 119 |
* it treats our attachment drag as a new-file upload attempt. |
| 120 |
*/ |
| 121 |
function installUploaderBlock() { |
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// Every uploader dropzone class WP core uses. `.drag-drop-area` |
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// is the text-and-icon panel inside the full-screen overlay; |
| 124 |
// `.uploader-window` is the overlay itself; `.uploader-inline` |
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// and `.uploader-editor` cover the modal and classic-editor |
| 126 |
// variants respectively. |
| 127 |
var UPLOADER_SELECTOR = [ |
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'.uploader-window', |
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'.uploader-inline', |
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'.uploader-editor', |
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'.drag-drop-area', |
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'.wp-uploader' |
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].join( ',' ); |
| 134 |
|
| 135 |
var block = function ( e ) { |
| 136 |
if ( ! dragInProgress ) { |
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return; |
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} |
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var t = e.target; |
| 140 |
if ( ! t || typeof t.closest !== 'function' ) { |
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return; |
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} |
| 143 |
if ( t.closest( UPLOADER_SELECTOR ) ) { |
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// Capture phase — fires before the uploader's own |
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// handler, so stopImmediatePropagation means the |
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// uploader never sees the event and therefore never |
| 147 |
// calls preventDefault() to claim the drop. |
| 148 |
e.stopImmediatePropagation(); |
| 149 |
if ( e.type === 'drop' || e.type === 'dragend' ) { |
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e.preventDefault(); |
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} |
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} |
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}; |
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|
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document.addEventListener( 'dragenter', block, true ); |
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document.addEventListener( 'dragover', block, true ); |
| 157 |
document.addEventListener( 'dragleave', block, true ); |
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document.addEventListener( 'drop', block, true ); |
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|
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// Inject a tiny stylesheet that hides the uploader overlay |
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// while our drag is active. Belt-and-braces: even if the |
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// capture listener above misses an event, the UI won't flash |
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// the "Drop files here" overlay — nothing visible to signal |
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// to the user that a re-upload is about to happen. |
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var style = document.createElement( 'style' ); |
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style.textContent = |
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'body.desktop-mode-dragging-attachment .uploader-window,' + |
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'body.desktop-mode-dragging-attachment .uploader-window-content,' + |
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'body.desktop-mode-dragging-attachment .uploader-editor-content,' + |
| 170 |
'body.desktop-mode-dragging-attachment .wp-uploader {' + |
| 171 |
' display: none !important;' + |
| 172 |
' pointer-events: none !important;' + |
| 173 |
'}'; |
| 174 |
document.head.appendChild( style ); |
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} |
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|
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/** |
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* Make a single .attachment tile draggable. Idempotent. |
| 179 |
* |
| 180 |
* @param {HTMLElement} el The .attachment element. |
| 181 |
*/ |
| 182 |
function enhance( el ) { |
| 183 |
if ( el.dataset.desktopModeDraggable === '1' ) { |
| 184 |
return; |
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} |
| 186 |
el.dataset.desktopModeDraggable = '1'; |
| 187 |
el.setAttribute( 'draggable', 'true' ); |
| 188 |
|
| 189 |
el.addEventListener( 'dragstart', function ( e ) { |
| 190 |
var id = parseInt( el.getAttribute( 'data-id' ) || el.dataset.id || '0', 10 ); |
| 191 |
if ( ! id ) { |
| 192 |
return; |
| 193 |
} |
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var model = wp.media.attachment( id ); |
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var a = ( model && model.attributes ) ? model.attributes : {}; |
| 196 |
var url = resolveOriginalUrl( a, scrapeUrl( el ) ); |
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var title = a.title || scrapeTitle( el ); |
| 198 |
if ( ! url ) { |
| 199 |
e.preventDefault(); |
| 200 |
return; |
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} |
| 202 |
populateDragTransfer( e, el, { |
| 203 |
id: id, |
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url: url, |
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title: title, |
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alt: a.alt || title, |
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mime: a.mime || a.mimeType || '', |
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sizes: a.sizes || {}, |
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} ); |
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} ); |
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|
| 212 |
el.addEventListener( 'dragend', onDragEnd ); |
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} |
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|
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/** |
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* Detail-view path — the BIG preview shown in the media modal's |
| 217 |
* right-hand sidebar AND the dedicated single-attachment edit page |
| 218 |
* at `upload.php?item=ID`. The grid-tile `enhance()` selector |
| 219 |
* (`.attachment`) doesn't reach these containers, so without this |
| 220 |
* companion the user can drag from the library grid but not from |
| 221 |
* the detail view. |
| 222 |
* |
| 223 |
* The container itself is made `draggable=true`. Setting it on the |
| 224 |
* wrapper rather than the inner `<img>` is intentional: the inner |
| 225 |
* thumbnail has WP click handlers (swap-into-edit, set-as-featured) |
| 226 |
* that can call `preventDefault` on `mousedown` and abort the |
| 227 |
* browser's native image-drag before it gets a chance to start. |
| 228 |
* Hoisting `draggable` to the parent gives us a clean handle and |
| 229 |
* the `<img>` inside acts as the drag image. |
| 230 |
* |
| 231 |
* @param {HTMLElement} el The `.attachment-details` or |
| 232 |
* `.edit-attachment-frame` container. |
| 233 |
*/ |
| 234 |
function enhanceDetail( el ) { |
| 235 |
if ( el.dataset.desktopModeDraggable === '1' ) { |
| 236 |
return; |
| 237 |
} |
| 238 |
el.dataset.desktopModeDraggable = '1'; |
| 239 |
el.setAttribute( 'draggable', 'true' ); |
| 240 |
|
| 241 |
el.addEventListener( 'dragstart', function ( e ) { |
| 242 |
var id = resolveDetailId( el ); |
| 243 |
var model = id ? wp.media.attachment( id ) : null; |
| 244 |
var a = ( model && model.attributes ) ? model.attributes : {}; |
| 245 |
|
| 246 |
var img = el.querySelector( |
| 247 |
'.thumbnail img, .attachment-media-view img, .details-image, img' |
| 248 |
); |
| 249 |
var fallbackUrl = img && ( img.currentSrc || img.src ) || ''; |
| 250 |
var url = resolveOriginalUrl( a, fallbackUrl ); |
| 251 |
if ( ! url ) { |
| 252 |
e.preventDefault(); |
| 253 |
return; |
| 254 |
} |
| 255 |
var title = a.title |
| 256 |
|| scrapeDetailTitle( el ) |
| 257 |
|| ( img && ( img.alt || img.title ) ) |
| 258 |
|| ''; |
| 259 |
|
| 260 |
populateDragTransfer( e, el, { |
| 261 |
id: id || 0, |
| 262 |
url: url, |
| 263 |
title: title, |
| 264 |
alt: a.alt || title, |
| 265 |
mime: a.mime || a.mimeType || guessMimeFromUrl( url ), |
| 266 |
sizes: a.sizes || {}, |
| 267 |
} ); |
| 268 |
} ); |
| 269 |
|
| 270 |
el.addEventListener( 'dragend', onDragEnd ); |
| 271 |
} |
| 272 |
|
| 273 |
/** |
| 274 |
* Shared tail of every dragstart handler: arm the uploader-block |
| 275 |
* interceptor, populate DataTransfer with text/uri-list + text/html |
| 276 |
* + the WP-aware custom MIME, and postMessage the payload up to the |
| 277 |
* parent shell so the cross-iframe bridge has it. |
| 278 |
* |
| 279 |
* @param {DragEvent} e |
| 280 |
* @param {HTMLElement} sourceEl The element being dragged (for |
| 281 |
* the drag image fallback). |
| 282 |
* @param {{id:number,url:string,title:string,alt:string, |
| 283 |
* mime:string,sizes:object,thumbnailUrl?:string}} record |
| 284 |
*/ |
| 285 |
function populateDragTransfer( e, sourceEl, record ) { |
| 286 |
dragInProgress = true; |
| 287 |
document.body.classList.add( 'desktop-mode-dragging-attachment' ); |
| 288 |
|
| 289 |
var url = record.url; |
| 290 |
var title = record.title; |
| 291 |
var alt = record.alt || title; |
| 292 |
var mime = record.mime || ''; |
| 293 |
var thumbnailUrl = record.thumbnailUrl |
| 294 |
|| ( record.sizes && record.sizes.thumbnail && record.sizes.thumbnail.url ) |
| 295 |
|| url; |
| 296 |
|
| 297 |
try { |
| 298 |
e.dataTransfer.setData( 'text/plain', url ); |
| 299 |
e.dataTransfer.setData( 'text/uri-list', url ); |
| 300 |
|
| 301 |
if ( mime.indexOf( 'image/' ) === 0 ) { |
| 302 |
e.dataTransfer.setData( |
| 303 |
'text/html', |
| 304 |
'<img src="' + escapeAttr( url ) + '" alt="' + escapeAttr( alt ) + '" />' |
| 305 |
); |
| 306 |
} else { |
| 307 |
e.dataTransfer.setData( |
| 308 |
'text/html', |
| 309 |
'<a href="' + escapeAttr( url ) + '">' + escapeHtml( title || url ) + '</a>' |
| 310 |
); |
| 311 |
} |
| 312 |
|
| 313 |
e.dataTransfer.setData( |
| 314 |
'application/x-wp-media-attachment', |
| 315 |
JSON.stringify( { |
| 316 |
id: record.id, |
| 317 |
url: url, |
| 318 |
title: title, |
| 319 |
alt: alt, |
| 320 |
mime: mime, |
| 321 |
sizes: record.sizes || {}, |
| 322 |
} ) |
| 323 |
); |
| 324 |
|
| 325 |
e.dataTransfer.effectAllowed = 'copy'; |
| 326 |
|
| 327 |
var thumb = sourceEl.querySelector( 'img' ); |
| 328 |
if ( thumb && thumb.complete && thumb.naturalWidth > 0 ) { |
| 329 |
e.dataTransfer.setDragImage( thumb, thumb.width / 2, thumb.height / 2 ); |
| 330 |
} |
| 331 |
} catch ( err ) { |
| 332 |
// setData can throw in older browsers or under hostile CSP. |
| 333 |
} |
| 334 |
|
| 335 |
try { |
| 336 |
if ( window.parent && window.parent !== window ) { |
| 337 |
window.parent.postMessage( { |
| 338 |
type: 'desktop-mode-drag-start', |
| 339 |
payload: { |
| 340 |
id: record.id, |
| 341 |
url: url, |
| 342 |
title: title, |
| 343 |
alt: alt, |
| 344 |
mime: mime, |
| 345 |
sizes: record.sizes || {}, |
| 346 |
thumbnailUrl: thumbnailUrl, |
| 347 |
}, |
| 348 |
}, window.location.origin ); |
| 349 |
} |
| 350 |
} catch ( postErr ) { |
| 351 |
// Cross-origin parent or sandboxed frame — the drag still |
| 352 |
// works via native DataTransfer. |
| 353 |
} |
| 354 |
} |
| 355 |
|
| 356 |
function onDragEnd() { |
| 357 |
dragInProgress = false; |
| 358 |
document.body.classList.remove( 'desktop-mode-dragging-attachment' ); |
| 359 |
try { |
| 360 |
if ( window.parent && window.parent !== window ) { |
| 361 |
window.parent.postMessage( |
| 362 |
{ type: 'desktop-mode-drag-end' }, |
| 363 |
window.location.origin |
| 364 |
); |
| 365 |
} |
| 366 |
} catch ( err ) { /* swallow */ } |
| 367 |
} |
| 368 |
|
| 369 |
/** |
| 370 |
* Resolve the attachment id for a detail-view container. WP exposes |
| 371 |
* it in several places depending on the surface: |
| 372 |
* |
| 373 |
* - Modal sidebar: `<div class="attachment-details" data-id="N">` |
| 374 |
* - Single-attachment page: `?item=N` in the URL, or a hidden |
| 375 |
* `#post_ID` input emitted by the post editor. |
| 376 |
* |
| 377 |
* Returns 0 when no id can be found — `populateDragTransfer` |
| 378 |
* tolerates id=0 and still ships a working drag using the |
| 379 |
* scraped URL. |
| 380 |
*/ |
| 381 |
function resolveDetailId( el ) { |
| 382 |
var raw = el.getAttribute( 'data-id' ) |
| 383 |
|| ( el.dataset && el.dataset.id ) |
| 384 |
|| ''; |
| 385 |
var n = parseInt( raw, 10 ); |
| 386 |
if ( n ) return n; |
| 387 |
|
| 388 |
try { |
| 389 |
var q = new URLSearchParams( window.location.search ); |
| 390 |
n = parseInt( q.get( 'item' ) || q.get( 'post' ) || '0', 10 ); |
| 391 |
if ( n ) return n; |
| 392 |
} catch ( err ) { /* old browser */ } |
| 393 |
|
| 394 |
var hidden = document.getElementById( 'post_ID' ); |
| 395 |
if ( hidden && hidden.value ) { |
| 396 |
n = parseInt( hidden.value, 10 ); |
| 397 |
if ( n ) return n; |
| 398 |
} |
| 399 |
return 0; |
| 400 |
} |
| 401 |
|
| 402 |
function scrapeDetailTitle( el ) { |
| 403 |
var input = el.querySelector( '[data-setting="title"] input, #title' ); |
| 404 |
if ( input && input.value ) return input.value; |
| 405 |
var filename = el.querySelector( '.filename, .filename .file' ); |
| 406 |
return filename ? filename.textContent.trim() : ''; |
| 407 |
} |
| 408 |
|
| 409 |
/** |
| 410 |
* Resolve the most-original URL for an attachment, in order: |
| 411 |
* |
| 412 |
* 1. `originalImageURL` from the model — WP 5.3+ exposes this |
| 413 |
* when the uploaded image was big enough to trigger the |
| 414 |
* `-scaled` derivative. It points at the un-scaled original. |
| 415 |
* 2. The model's `url`, with WP-generated suffixes stripped: |
| 416 |
* `-WxH` size variants AND the `-scaled` marker (both, in |
| 417 |
* either order, anchored to the extension). |
| 418 |
* 3. The DOM-scraped fallback (the thumbnail src), with the |
| 419 |
* same suffix normalisation. |
| 420 |
* |
| 421 |
* Returns '' when nothing is available. |
| 422 |
* |
| 423 |
* @param {object} attrs The attachment model's `attributes`. |
| 424 |
* @param {string} fallback URL scraped from the DOM (thumbnail). |
| 425 |
* @return {string} |
| 426 |
*/ |
| 427 |
function resolveOriginalUrl( attrs, fallback ) { |
| 428 |
if ( attrs && attrs.originalImageURL ) { |
| 429 |
return attrs.originalImageURL; |
| 430 |
} |
| 431 |
var candidate = ( attrs && attrs.url ) || fallback || ''; |
| 432 |
return stripSizeSuffix( candidate ); |
| 433 |
} |
| 434 |
|
| 435 |
/** |
| 436 |
* Strip `-WxH` (e.g. `-300x167`) and `-scaled` suffixes immediately |
| 437 |
* before the file extension, preserving any query string / fragment. |
| 438 |
* |
| 439 |
* foo-300x167.jpg → foo.jpg |
| 440 |
* foo-scaled.jpg → foo.jpg |
| 441 |
* foo-300x167-scaled.jpg → foo.jpg |
| 442 |
* foo.jpg?ver=1 → foo.jpg?ver=1 |
| 443 |
* foo.jpg → foo.jpg |
| 444 |
*/ |
| 445 |
function stripSizeSuffix( url ) { |
| 446 |
if ( ! url ) return url; |
| 447 |
return url.replace( |
| 448 |
/(-\d+x\d+)?(-scaled)?(\.[a-z0-9]+)(\?[^#]*)?(#.*)?$/i, |
| 449 |
function ( _m, _wh, _sc, ext, query, hash ) { |
| 450 |
return ext + ( query || '' ) + ( hash || '' ); |
| 451 |
} |
| 452 |
); |
| 453 |
} |
| 454 |
|
| 455 |
function guessMimeFromUrl( url ) { |
| 456 |
var m = /\.([a-z0-9]+)(?:\?|#|$)/i.exec( url || '' ); |
| 457 |
var ext = m ? m[ 1 ].toLowerCase() : ''; |
| 458 |
var IMG = { jpg: 1, jpeg: 1, png: 1, gif: 1, webp: 1, avif: 1, svg: 1 }; |
| 459 |
if ( IMG[ ext ] ) { |
| 460 |
return 'image/' + ( ext === 'jpg' ? 'jpeg' : ext === 'svg' ? 'svg+xml' : ext ); |
| 461 |
} |
| 462 |
return ''; |
| 463 |
} |
| 464 |
|
| 465 |
// --------------------------------------------------------------- |
| 466 |
// Helpers — DOM scrape fallbacks, HTML/attribute escaping. |
| 467 |
// --------------------------------------------------------------- |
| 468 |
|
| 469 |
function scrapeUrl( el ) { |
| 470 |
var img = el.querySelector( 'img' ); |
| 471 |
if ( img && img.src ) { |
| 472 |
return img.src; |
| 473 |
} |
| 474 |
var a = el.querySelector( 'a[href]' ); |
| 475 |
return a ? a.getAttribute( 'href' ) : ''; |
| 476 |
} |
| 477 |
|
| 478 |
function scrapeTitle( el ) { |
| 479 |
var filename = el.querySelector( '.filename, .media-filename' ); |
| 480 |
if ( filename && filename.textContent ) { |
| 481 |
return filename.textContent.trim(); |
| 482 |
} |
| 483 |
var img = el.querySelector( 'img' ); |
| 484 |
return img ? ( img.alt || img.title || '' ) : ''; |
| 485 |
} |
| 486 |
|
| 487 |
function escapeAttr( s ) { |
| 488 |
return String( s ) |
| 489 |
.replace( /&/g, '&' ) |
| 490 |
.replace( /"/g, '"' ) |
| 491 |
.replace( /</g, '<' ) |
| 492 |
.replace( />/g, '>' ); |
| 493 |
} |
| 494 |
|
| 495 |
function escapeHtml( s ) { |
| 496 |
return String( s ) |
| 497 |
.replace( /&/g, '&' ) |
| 498 |
.replace( /</g, '<' ) |
| 499 |
.replace( />/g, '>' ); |
| 500 |
} |
| 501 |
} )(); |
| 502 |
|
