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(function () { |
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'use strict'; |
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|
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function typoCssVarsForEl(typo, prefix, el) { |
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if (!typo || typeof typo !== 'object') return; |
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if (typo.family) el.style.setProperty(prefix + 'font-family', "'" + typo.family + "', sans-serif"); |
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if (typo.weight) el.style.setProperty(prefix + 'font-weight', typo.weight); |
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if (typo.transform) el.style.setProperty(prefix + 'text-transform', typo.transform); |
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if (typo.style) el.style.setProperty(prefix + 'font-style', typo.style); |
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if (typo.decoration) el.style.setProperty(prefix + 'text-decoration', typo.decoration); |
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['size', 'lineHeight', 'letterSpacing', 'wordSpacing'].forEach(function (prop) { |
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var unit = typo[prop + 'Unit'] || 'px'; |
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var d = typo[prop + 'Desktop'], t = typo[prop + 'Tablet'], m = typo[prop + 'Mobile']; |
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var css = { size: 'font-size', lineHeight: 'line-height', letterSpacing: 'letter-spacing', wordSpacing: 'word-spacing' }[prop]; |
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if (d !== undefined && d !== '') el.style.setProperty(prefix + css + '-d', d + unit); |
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if (t !== undefined && t !== '') el.style.setProperty(prefix + css + '-t', t + unit); |
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if (m !== undefined && m !== '') el.style.setProperty(prefix + css + '-m', m + unit); |
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}); |
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} |
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|
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function shuffle(arr) { |
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var a = arr.slice(); |
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for (var i = a.length - 1; i > 0; i--) { |
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var j = Math.floor(Math.random() * (i + 1)); |
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var t = a[i]; a[i] = a[j]; a[j] = t; |
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} |
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return a; |
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} |
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|
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function luminance(hex) { |
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var c = (hex || '#000').replace('#', ''); |
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return 0.299 * parseInt(c.slice(0, 2), 16) + 0.587 * parseInt(c.slice(2, 4), 16) + 0.114 * parseInt(c.slice(4, 6), 16); |
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} |
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|
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function initBlock(root) { |
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var opts; |
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try { opts = JSON.parse(root.getAttribute('data-opts')); } catch (e) { return; } |
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|
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var a = opts; |
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var rawCards; |
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try { rawCards = JSON.parse(a.cards); } catch (e) { rawCards = []; } |
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|
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var deck = rawCards.map(function (c) { return { id: c.id, front: c.front, back: c.back, known: false }; }); |
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var currentIndex = 0; |
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var isFlipped = false; |
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|
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root.innerHTML = ''; |
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|
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var wrap = document.createElement('div'); |
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wrap.className = 'bkbg-fc-wrap'; |
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wrap.style.cssText = 'background:' + a.sectionBg + ';max-width:' + a.contentMaxWidth + 'px;margin:0 auto;'; |
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wrap.setAttribute('tabindex', '-1'); |
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root.appendChild(wrap); |
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typoCssVarsForEl(a.typoTitle, '--bkbg-flash-tt-', wrap); |
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typoCssVarsForEl(a.typoSubtitle, '--bkbg-flash-ts-', wrap); |
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typoCssVarsForEl(a.typoCard, '--bkbg-flash-tc-', wrap); |
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|
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if (a.showTitle) { |
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var h = document.createElement('div'); |
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h.className = 'bkbg-fc-title'; |
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h.style.color = a.titleColor; |
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h.textContent = a.title; |
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wrap.appendChild(h); |
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} |
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|
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if (a.showSubtitle) { |
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var s = document.createElement('div'); |
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s.className = 'bkbg-fc-subtitle'; |
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s.style.color = a.subtitleColor; |
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s.textContent = a.subtitle; |
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wrap.appendChild(s); |
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} |
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|
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var progressBarWrap = null; |
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var progressBar = null; |
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var progressLabel = null; |
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|
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if (a.showProgress) { |
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var progressRow = document.createElement('div'); |
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progressRow.className = 'bkbg-fc-progress-row'; |
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var pLabel = document.createElement('span'); |
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pLabel.style.color = a.labelColor; |
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pLabel.textContent = 'Progress'; |
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progressLabel = document.createElement('span'); |
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progressLabel.style.color = a.labelColor; |
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progressRow.appendChild(pLabel); |
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progressRow.appendChild(progressLabel); |
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wrap.appendChild(progressRow); |
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progressBarWrap = document.createElement('div'); |
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progressBarWrap.className = 'bkbg-fc-progress-bar-wrap'; |
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progressBar = document.createElement('div'); |
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progressBar.className = 'bkbg-fc-progress-bar'; |
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progressBar.style.background = a.knownColor; |
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progressBarWrap.appendChild(progressBar); |
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wrap.appendChild(progressBarWrap); |
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} |
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|
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// Card scene |
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var scene = document.createElement('div'); |
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scene.className = 'bkbg-fc-scene'; |
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scene.style.height = a.cardHeight + 'px'; |
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wrap.appendChild(scene); |
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|
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var card = document.createElement('div'); |
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card.className = 'bkbg-fc-card'; |
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card.style.height = a.cardHeight + 'px'; |
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scene.appendChild(card); |
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|
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var front = document.createElement('div'); |
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front.className = 'bkbg-fc-face bkbg-fc-front'; |
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front.style.cssText = 'background:' + a.cardFrontBg + ';color:' + a.labelColor + ';'; |
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card.appendChild(front); |
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|
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var back = document.createElement('div'); |
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back.className = 'bkbg-fc-face bkbg-fc-back'; |
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back.style.cssText = 'background:' + a.cardBackBg + ';color:' + a.cardBackColor + ';'; |
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card.appendChild(back); |
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|
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var flipHint = document.createElement('div'); |
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flipHint.className = 'bkbg-fc-flip-hint'; |
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flipHint.style.color = a.labelColor; |
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flipHint.textContent = 'Click to flip'; |
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front.appendChild(flipHint); |
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|
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card.addEventListener('click', function () { |
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isFlipped = !isFlipped; |
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card.classList.toggle('bkbg-fc-flipped', isFlipped); |
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}); |
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|
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// Navigation |
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var nav = document.createElement('div'); |
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nav.className = 'bkbg-fc-nav'; |
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wrap.appendChild(nav); |
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|
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var prevBtn = document.createElement('button'); |
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prevBtn.className = 'bkbg-fc-nav-btn'; |
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prevBtn.textContent = '←'; |
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prevBtn.setAttribute('aria-label', 'Previous card'); |
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nav.appendChild(prevBtn); |
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|
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if (a.showKnownBtn) { |
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var knownBtn = document.createElement('button'); |
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knownBtn.className = 'bkbg-fc-known-btn'; |
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knownBtn.style.background = a.knownColor; |
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knownBtn.textContent = '✓ Know it'; |
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knownBtn.addEventListener('click', function () { |
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deck[currentIndex].known = true; |
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render(); |
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if (currentIndex < deck.length - 1) { |
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currentIndex++; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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render(); |
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} else { |
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showSummary(); |
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} |
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}); |
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nav.appendChild(knownBtn); |
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} |
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|
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var nextBtn = document.createElement('button'); |
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nextBtn.className = 'bkbg-fc-nav-btn'; |
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nextBtn.textContent = '→'; |
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nextBtn.setAttribute('aria-label', 'Next card'); |
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nav.appendChild(nextBtn); |
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|
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var counterRow = document.createElement('div'); |
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counterRow.className = 'bkbg-fc-counter-row'; |
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counterRow.style.color = a.labelColor; |
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wrap.appendChild(counterRow); |
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|
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var counter = document.createElement('span'); |
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counter.className = 'bkbg-fc-counter'; |
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counterRow.appendChild(counter); |
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|
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if (a.showShuffleBtn) { |
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var shuffleBtn = document.createElement('button'); |
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shuffleBtn.className = 'bkbg-fc-action-btn'; |
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shuffleBtn.style.cssText = 'border:1px solid ' + a.accentColor + ';color:' + a.accentColor + ';'; |
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shuffleBtn.textContent = '⇌ Shuffle'; |
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shuffleBtn.addEventListener('click', function () { |
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deck = shuffle(deck); |
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currentIndex = 0; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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render(); |
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}); |
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counterRow.appendChild(shuffleBtn); |
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} |
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|
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var resetBtn = document.createElement('button'); |
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resetBtn.className = 'bkbg-fc-action-btn'; |
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resetBtn.style.cssText = 'border:1px solid #e5e7eb;color:' + a.subtitleColor + ';'; |
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resetBtn.textContent = '↺ Reset'; |
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resetBtn.addEventListener('click', function () { |
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deck.forEach(function (c) { c.known = false; }); |
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currentIndex = 0; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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scene.style.display = ''; |
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nav.style.display = ''; |
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counterRow.style.display = ''; |
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if (skHint) skHint.style.display = ''; |
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if (summaryEl) summaryEl.remove(), summaryEl = null; |
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render(); |
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}); |
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counterRow.appendChild(resetBtn); |
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|
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var skHint = null; |
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if (a.showKeyboardHint) { |
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skHint = document.createElement('div'); |
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skHint.className = 'bkbg-fc-keyboard-hint'; |
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skHint.style.color = a.subtitleColor; |
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skHint.textContent = '← → Arrow keys to navigate • Space to flip'; |
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wrap.appendChild(skHint); |
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} |
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|
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prevBtn.addEventListener('click', function () { |
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if (currentIndex > 0) { |
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currentIndex--; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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render(); |
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} |
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}); |
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|
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nextBtn.addEventListener('click', function () { |
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if (currentIndex < deck.length - 1) { |
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currentIndex++; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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render(); |
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} |
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}); |
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|
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var summaryEl = null; |
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|
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function showSummary() { |
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scene.style.display = 'none'; |
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nav.style.display = 'none'; |
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counterRow.style.display = 'none'; |
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if (skHint) skHint.style.display = 'none'; |
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|
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summaryEl = document.createElement('div'); |
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summaryEl.className = 'bkbg-fc-summary'; |
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summaryEl.style.color = a.labelColor; |
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|
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var knownCount = deck.filter(function (c) { return c.known; }).length; |
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var icon = knownCount === deck.length ? '🎉' : '📚'; |
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summaryEl.innerHTML = '<div class="bkbg-fc-summary-icon">' + icon + '</div>' + |
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'<h3 style="color:' + a.titleColor + '">Deck Complete!</h3>' + |
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'<p>' + knownCount + ' of ' + deck.length + ' cards marked as known</p>'; |
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|
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var rsBtn = document.createElement('button'); |
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rsBtn.className = 'bkbg-fc-restart-btn'; |
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rsBtn.style.background = a.accentColor; |
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rsBtn.textContent = '↺ Study Again'; |
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rsBtn.addEventListener('click', function () { |
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deck.forEach(function (c) { c.known = false; }); |
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currentIndex = 0; |
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isFlipped = false; |
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card.classList.remove('bkbg-fc-flipped'); |
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scene.style.display = ''; |
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nav.style.display = ''; |
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counterRow.style.display = ''; |
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if (skHint) skHint.style.display = ''; |
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summaryEl.remove(); |
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summaryEl = null; |
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render(); |
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}); |
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summaryEl.appendChild(rsBtn); |
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wrap.appendChild(summaryEl); |
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} |
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|
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function render() { |
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var c = deck[currentIndex]; |
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if (!c) return; |
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|
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// known badge |
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front.querySelectorAll('.bkbg-fc-known-badge').forEach(function (el) { el.remove(); }); |
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if (c.known) { |
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var badge = document.createElement('div'); |
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badge.className = 'bkbg-fc-known-badge'; |
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badge.style.cssText = 'background:' + a.knownColor + ';color:#fff;'; |
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badge.textContent = '✓ Known'; |
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front.prepend(badge); |
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} |
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|
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// front text |
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var frontText = front.querySelector('.bkbg-fc-text'); |
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if (!frontText) { |
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frontText = document.createElement('div'); |
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frontText.className = 'bkbg-fc-text'; |
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front.insertBefore(frontText, flipHint); |
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} |
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frontText.textContent = c.front; |
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|
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// back text |
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back.textContent = c.back; |
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|
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// counter |
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counter.textContent = (currentIndex + 1) + ' / ' + deck.length; |
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|
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// nav buttons |
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prevBtn.disabled = currentIndex === 0; |
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nextBtn.disabled = currentIndex === deck.length - 1; |
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|
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// progress |
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if (progressBar && progressLabel) { |
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var knownCount = deck.filter(function (d) { return d.known; }).length; |
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progressBar.style.width = (knownCount / deck.length * 100) + '%'; |
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progressLabel.textContent = knownCount + ' / ' + deck.length + ' known'; |
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} |
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} |
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|
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// Keyboard nav |
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document.addEventListener('keydown', function (e) { |
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if (!root.closest(':focus-within') && document.activeElement !== document.body) { |
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var rect = root.getBoundingClientRect(); |
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if (rect.top > window.innerHeight || rect.bottom < 0) return; |
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} |
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if (e.key === 'ArrowLeft') { prevBtn.click(); } |
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if (e.key === 'ArrowRight') { nextBtn.click(); } |
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if (e.key === ' ') { e.preventDefault(); card.click(); } |
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}); |
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|
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render(); |
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} |
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|
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function init() { |
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document.querySelectorAll('.bkbg-fc-app').forEach(initBlock); |
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} |
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|
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if (document.readyState === 'loading') { |
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document.addEventListener('DOMContentLoaded', init); |
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} else { |
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init(); |
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} |
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})(); |
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|
