August 2012 – Zoe's Continuing Education And Certification

/** * Native WordPress post-lock coordinator for live FrontEdit sessions. * * Reads: SFE.Api.apiCall, SFE.ManagerData.postId * Exposes: SFE.PostLockManager { beginLockClaim, ensureLock, handleLockedError } */ (function() { 'use strict'; window.MWP = window.MWP || {}; window.MWP.SFE = window.MWP.SFE || {}; const SFE = window.MWP.SFE; let ownsLock = false; let refreshTimer = null; let pendingClaim = null; /** * Prevent editor and draft-preview Escape handlers from closing an active * editing session while the post-lock decision is on screen. * * Window capture runs before the document-level editor lifecycle handlers. * * @param {KeyboardEvent} event Keyboard event. * @returns {void} */ window.addEventListener('keydown', (event) => { if ( event.key === 'Escape' && document.querySelector('.mwp-sfe-post-lock-modal.is-open') ) { event.preventDefault(); event.stopImmediatePropagation(); } }, true); function escapeHtml(value) { return String(value).replace(/[&<>"']/g, (char) => ({ '&': '&', '<': '<', '>': '>', '"': '"', "'": ''' })[char]); } function showLockModal(owner = {}) { return new Promise((resolve) => { const modal = document.createElement('div'); modal.className = 'mwp-sfe-post-lock-modal is-open'; modal.setAttribute('data-mwp-sfe-control', 'post-lock-modal'); modal.innerHTML = `

`; document.body.appendChild(modal); modal.querySelector('.mwp-sfe-post-lock-cancel').addEventListener('click', () => { modal.remove(); resolve(false); }); modal.querySelector('.mwp-sfe-post-lock-takeover').addEventListener('click', () => { modal.remove(); resolve(true); }); }); } function beginRefresh() { if (refreshTimer) return; refreshTimer = window.setInterval(async () => { if (!ownsLock) return; try { await SFE.Api.apiCall('/post-lock/claim', { post_id: SFE.ManagerData.postId }); } catch (error) { ownsLock = false; clearInterval(refreshTimer); refreshTimer = null; } }, 60000); } /** * Start one shared lock-claim operation for the current post. * * Opening an editor does not need to wait for this request, but every * published-content mutation must await the returned promise before it * reaches the server. Sharing the promise keeps concurrent editor opens and * saves from issuing competing claims or bypassing the pending decision. * * @returns {Promise} Whether this user holds the post lock. */ function beginLockClaim() { if (ownsLock) return Promise.resolve(true); if (pendingClaim) return pendingClaim; pendingClaim = (async () => { try { await SFE.Api.apiCall('/post-lock/claim', { post_id: SFE.ManagerData.postId }); } catch (error) { if (error.message !== 'POST_LOCKED' || !await showLockModal(error?.payload?.lock?.owner)) return false; try { await SFE.Api.apiCall('/post-lock/claim', { post_id: SFE.ManagerData.postId, take_over: true }); } catch (_) { return false; } } ownsLock = true; beginRefresh(); return true; })(); pendingClaim.finally(() => { pendingClaim = null; }); return pendingClaim; } /** * Wait until the current user's native WordPress post lock is held. * * @returns {Promise} Whether this user holds the post lock. */ async function ensureLock() { return beginLockClaim(); } async function handleLockedError(error) { ownsLock = false; if (error?.message !== 'POST_LOCKED') return false; if (!await showLockModal(error?.payload?.lock?.owner)) return false; try { await SFE.Api.apiCall('/post-lock/claim', { post_id: SFE.ManagerData.postId, take_over: true }); ownsLock = true; beginRefresh(); return true; } catch (_) { return false; } } SFE.PostLockManager = { beginLockClaim, ensureLock, handleLockedError }; })(); August 2012 – Zoe's Continuing Education And Certification

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